Charging device. RU patent 2509401.
 Charging system of electric power-driven tool, battery power source of electric power-driven tool, and charging device for batteries of electric power-driven tool / 2508592Each of the charging device for batteries and the battery power source has a microcomputer. Corresponding microcomputers jointly perform data exchange while the battery power source is charged by means of the charging device for batteries and confirm the working state of the microcomputer of the other side of data exchange (confirmation of interaction) based on the data exchange result. When malfunction of one of the microcomputers is detected, the other microcomputer performs a pre-defined process to stop the charging operation. |
 Universal charging device / 2507661Universal charging device for charging of rechargeable batteries comprises a body, a connection block, formed on the specified body to hold a rechargeable battery, besides, the specified connection block comprises a mechanism of fixation with the possibility of disconnection of the specified rechargeable accumulator to the specified body and a circuit of power supply control, functionally integrated with the specified body, besides, the specified circuit of power supply control is made as capable of determining working parameters and parameters of charging of the specified rechargeable accumulator attached to the specified mechanism of fixation; in which the specified circuit of power supply control controls recharging of the specified battery depending on the specified certain working parameters and parameters of charging. |
 Electric driven tool, tool body and accumulator source of power supply / 2507660Electric driven tool comprises a tool body and an accumulator source of power supply. A module for setting voltage of a contact lead of a tool body sets voltage of a contact lead at the side of the body as equal to the first voltage, when a command to put in action a unit of the tool body drive is issued by means of a switch of the tool body. The module of voltage variation in the accumulator source of power supply varies voltage of a contact lead at the side of the accumulator from the first voltage to the second voltage, when supply of energy from the accumulator source of power supply into the drive unit is permitted. |
 Method and system for power levelling (versions) / 2506679Invention refers to the sphere of electrical engineering. Systems and methods for use of different types of accumulators for selective accumulation and energy output are described herein. Accumulators accumulate energy produced by energy source on selective basis when power of the source exceeds current power demand of the load and accumulators give up energy when power of the source is insufficient to supply current power demand of the load. |
 Power supply interface for electric tool powered by plurality of battery packs / 2505904Electric tool is powered by a plurality of battery packs connected in series. The electric tool has a controller adapted to receive signals transmitted from integrated circuits located in each of the battery packs. Between the controller of the electric tool and one of the integrated circuits of the battery packs, there is a voltage level shift circuit for shifting the voltage level of the signal transmitted from the corresponding integrated circuit to the controller of the tool to an acceptable level for the controller. |
 System equipped with microcomputer and battery pack for power tool / 2504887System equipped with microcomputer for power tool includes microcomputer, reference voltage generator, reference data memory unit and the first detection unit. Microcomputer includes analogue-to-digital converter (ADC) and at least one analogue-to-digital port (AD-port). Reference voltage generator generates and introduces preset reference voltage to AD-port. Reference data memory unit contains reference data corresponding to reference voltage which have been saved earlier. The first detection unit compares diagnostic data obtained in result of AD-conversion by ADC of reference voltage fed to AD-port with reference data so that when difference between diagnostic data and reference data exceeds preset limits of permitted range it could be detected that AD-anomaly occurs and in this state it is not possible to obtain correct result of AD-conversion from ADC. |
 Method of feeding of load by direct current in autonomous electric power supply system of man-made earth satellite / 2503112Proposed method of feeding of a load with direct current in an autonomous power supply system of a man-made Earth satellite from a solar battery and a set from "n" secondary sources of electric energy - accumulator batteries, which consists in stabilisation of voltage on a load, performance of charging and discharging of accumulator batteries via individual charging and discharging converters, with usage of volt-adding units in discharge converters. The above volt-adding units of discharge converters are combined into a common volt-adding unit. Control keys of discharge converters are installed between an appropriate accumulator battery and a common volt-adding unit. |
 Charge-discharge device with energy recuperation to ships' mains / 2498476Charge-discharge device includes the first (1) and second (24) alternating voltage network with a group of DC voltage consumers, the first (2) and second (19) automatic circuit-breakers, the first (3), second (17), third (2) and fourth (22) current sensors, the first (4), second (6) and third (13) filter, the first (5), second (7) and third (16) rectifier-inverter at that the second rectifier-inverter (7) includes the first (8), second (10), third (9) and fourth (11) IGBT-keys; protection unit (12), a group of DC voltage consumers (14), transformer (15), DC voltage network with accumulator battery (18), the first (20) and second (23) voltage sensor, the first (25), second (26) and third (28) unit of power key drivers, analogue-to-digital converter (27), uninterrupted power supply with accumulator battery (29) and microcontroller (30). |
 Method of accelerated charge for fixed lead accumulators / 2498463Method of accelerated charge for fixed lead accumulators with pasted electrodes involves double-staged charging of charging capacity; at the first stage it is charged by current equal to 0.2^0.3 Cu (Cu means capacity at 10-hour discharge mode) till voltage equal to 2.3 (H2, 45V) is reached; at the second stage charge is charged by the specified voltage at smooth current decrease. Charging is completed when recharge coefficient is reached (ratio of capacity received at the next charging to capacity received at the previous charging), equal to 0.95 +• 1.05 with normal charging after 2-3 accelerated charges. |
 Converter with pulse energy transfer and power supply from ac network / 2496206Converter includes a storage capacitor unit, one armature of which is connected through load of AC output to cathode of input diode connected through anode to the first terminal of the network; cathode of input diode is connected to anode of thyristor, the cathode of which is output of DC load and controlled with phase control system synchronised from the network, which consists of pulse transformer and link of shaping a control signal of thyristor, the second output of DC load is formed with connection point of the second terminal of network with diode anode, through which the discharging of storage capacitor unit is performed at negative half-wave of supply voltage, and diode cathode is connected to the other armature of storage capacitor unit and diode anode, through which the charging of storage capacitor unit is performed at positive half-wave of supply voltage, the cathode of which is connected to thyristor cathode and positive output of DC load; with that, thyristor phase control system includes stage of variable time delay of thyristor activation voltage, which includes shaper of clock pulses, which is connected with input to secondary winding of pulse transformer, and output to the inverting C-input of N-discharge pulse counter, the discharge outputs of which are switched with a switch that is connected with output to input of pulse amplifier and to R-input of counter zero setting, and output voltage of pulse amplifier through an isolating diode is thyristor activation voltage. |
 Automobile electrical system / 2244848Invention relates to energy accumulation systems using generator and storage and it is designed for use on vehicles with internal combustion engines. Proposed system contains electric motor, armature shaft of electric motor being designed for rotation of internal combustion engine shaft, first storage battery, first electromagnetic solenoid relay of electric motor, electric generator and battery switch. System is furnished also second storage battery, second and third electromagnetic relays, first and second magnetic contactors and selector switch with three contacts. First contacts of electric motor, switch, electric generator, windings of each contactor and each relay are connected with frame. Second contacts of winding of first magnetic contactor and first relay are connected with first fixed contact of selector switch. Second contacts of winding of second magnetic contactor, second and third electromagnetic relays are connected with second fixed contact of selector switch. First contacts of second and third magnetic relays and first magnetic contactor are connected with third movable contact of selector switch and with first pole of first battery. Second contacts of first and second magnetic contactors are connected with first pole of second battery. Second contact of electric motor is connected with first contact of first relay whose second contact is connected with second pole of second battery. Second contact of second relay is connected with second contact of first relay. Second contact of switch and first contact of second contactor are connected with second pole of first battery. Second contact of third relay is connected with second contact of generator. |
 High-speed cycling of storage-battery cells with enhanced current / 2284076Proposed method for high-speed cycling of battery cells with enhanced current includes battery filling with electrolyte, assembly of batteries in groups, their installation in liquid coolant filled reservoirs and settling-down, followed by multistage cycling with dc or pulse current. This treatment is effected in five stages; first stage involves passage of dc cycling current of 0.002-0.03Cn through battery for 10-60 minutes, its direction being reverse to normal one; during second stage current is reversed to normal and held within 0.002-0.03Cn for 10-60 minutes; third stage involves cycling with variable-polarity pulse current at charge pulse length of 100-300 s and discharge pulse length of 10-20 s, charge pulse amplitude being increased to 0.3-0.7Cn; fourth stage involves cycling for 1-3 h with variable-polarity pulse current at same length of charge and discharge pulses and constant amplitude of discharge pulses ranging between 0.3 and 0.7Cn; during fifth stage cycling is effected with variable-polarity pulse current and same length of charge and discharge pulses, amplitude of charge pulses being reduced to 0.15-0.4Cn; on-line control of third through fifth cycling stages is effected by using discharge pulses set up due to cell discharge across standard resistor as test ones and comparing their amplitude with experimental normalized amplitudes for each stage. Such procedure enables optimization of cycling lead-acid batteries with heavy current within short period at reduced in-process polarization of plates and their recharge, as well as enhancement of energy-intensive modification of β-PbO2 in positive-plate active material whose strength is also enhanced. |
 Computer-based production complex for cycling and charging flow-line produced storage batteries / 2287884Proposed computer-based production complex for cycling and charging flow-line produced storage batteries that incorporates provision for reducing mechanical damage to batteries during their loading in and removal from tanks under flow-line production conditions and for equalizing temperature gradients in tanks during battery cycling and charging has electrolyte holding machine, electrolyte level correcting machine, washing machine, degree-of-charge checking device, labeling machine, packing machine, hydraulic communication system with heat-transfer apparatus, set of power converters for feeding cycling and charging currents. Device for loading storage batteries on trays , device for removing batteries from trays, running cooling water tanks with movable controlled face walls are installed in line between two rail tracks with moving cars for trays mounting storage batteries. Battery-holding tray pushers and tanks are installed opposite inlet face walls of each tank. Guide rollers are disposed throughout entire length of each tank for moving trays incorporating slots uniformly arranged on surface and used for running water circulation. |
| Method for accelerated charging of alkaline accumulators / 2293402 In accordance to method accumulators are charged with current impulses of different polarity with stabilized amplitudes of discharge and charge currents, while ratio of amplitudes of discharge and charge currents γ and ratio of durations of discharge and charge impulses τ are determined individually for each type of accumulators by means of two-factor experiment in intervals γ=1,1÷10 and τ=0,1÷0,9 respectively, amplitude of discharge current is calculated based on average current in accordance to required charging time, while charging time oscillates from 7 minutes to 4 hours depending on requirements of client, discharge process is stopped when voltage on accumulator reaches threshold value, charging of alkaline accumulators is performed in automatic mode without return of accumulators to original state. |
 Device for controlling accumulator charging / 2293415Device contains impulse generator, discharge chain circuit, indication circuit, outputs for connection of accumulator, key element, control circuit and source of direct stabilized voltage, to output of which connected electrically in parallel are impulse generator, first input of key element and also through smoothing filter - load, connected in parallel through discharge chain circuit are indication circuit and outputs of accumulator. New are introduced current limiting element, discharge key element, electrically connected to output of impulse generator, and launch circuit, input of which is electrically connected to outputs of discharge key element and control circuit, and output - to second input of key element, electrically connected by output to input of current-limiting element, another output of which is connected to inputs of control circuit, indication circuit and positive output of accumulator. |
 Autonomous voltage source / 2293416In autonomous voltage source, diode-capacitor block consists of capacitor, connected in parallel to photo-electric transformer, and two fast action Schottky diodes, first one of which is connected serially between photo-electric transformer and capacitor, and second one - between capacitor and accumulator battery on the side of its positive output. |
 Power supply turn-on and turn-off device / 2300166Proposed power turn-on and turn-of device has secondary power supply, code keying unit, control unit, actuating device with make contact, push-button with make contact, indicator, first and second input power buses, first and second output power buses. Novelty is introduction of code keying unit and new interconnections for functional components. |
 Method and device for restoring accumulator battery / 2309509Accumulator battery restoration method includes following modes and parameters - before beginning the restoration of accumulator battery, technological process parameters of accumulator battery restoration are recorded into memory of measuring device, which are compared in process of accumulator battery restoration to current values of accumulator battery restoration process parameters, which are corrected in case of deviation from given value of technological process parameters, charging of accumulator battery with constant current is stopped on achievement of given parameter values, recorded in the memory of measuring device, by current parameter values, after that accumulator battery is charged by letting a series of rectangular current impulses through it, duration of which impulses is set between 150 and 600 milliseconds, and pause between impulses ranges from 2 to 6 seconds, while amplitude of rectangular current impulses is kept unchanged at the temperature of electrolyte below predetermined value, and if the value of electrolyte temperature exceeds that value, the amplitude of rectangular current impulses is reduced to value, at which electrolyte temperature is reduced to predetermined value, and charging process is stopped on achievement of parameter values of measured values, defining end of battery charging process and recorded in the memory of measuring means in advance, after that battery capacity is measured by discharging it, which is stopped when battery voltage reaches limit value set for the battery, and accumulator battery restoration cycle is repeated, if capacity of the battery is less than 80% of nominal value. Device for restoring the accumulator battery contains block of charge current sources, output of which is used for connecting accumulator battery, current sensor, voltage sensor, temperature sensor, electrolyte density meter and memory block, it is fitted with processor, interface block, indication block and decoder, while memory block and indication block are connected to the processor, connected to which via interface block are current sensor, voltage sensor, temperature sensor and electrolyte density meter, processor output is connected to decoder input, first output of which is connected to input for controlling charging current source connection, and second output of decoder is connected to charging current parameter control input of charging current source block. |
 Method of accumulators charge with their grouping in system by principle of capacities division / 2329582Method of accumulators charge with their grouping in the system by principle of capacities division is characterised by the fact that accumulators are divided into groups that include single-type and close in value of their measured capacity accumulators, with equal number of serially connected accumulators in different groups. Groups are charges simultaneously and in parallel, from the same source that generates charging current, which is determined as sum of currents that are dependent on measured capacity of accumulators in groups. |
 Electric tooth bruch and disposable components / 2336846Invention concerns electric tooth brushes in which components of toothbrush heads are disposable. Electric tooth brush contains handle, head and waist, located between head and handle. Handle has internal hallow and head contains chaetas. Head contains at least one of components with electricity supply, interrupter, electrically connected to motor, located in internal hollow presented in handle. At least one component is connected by means of sliding connection with head of electric tooth brush, at that component can be detached or changed without detaching of components with electricity supply from mentioned tooth brush head. |
FIELD: electricity.
SUBSTANCE: charging device, comprising a unit of charging voltage release; a unit for setting of switching duration; a unit to generate a PWM signal; a unit to generate reference voltage; a unit to limit reference voltage; a unit to generate detected voltage; and a unit to control charging voltage. The unit to generate reference voltage generates reference voltage for detection of whether the charging voltage achieved the target charging voltage by means of smoothing of the PWM signal, generated from the unit of PWM signal discharge. The unit to limit reference voltage limits at least one of the maximum value or minimum value of reference voltage generated by the unit of reference voltage generation.
EFFECT: unification of a charging device to provide for charging of accumulators with different voltages.
4 dwg
The technical field
The present invention relates to a charger that charges the battery power tools to.
Prior art
The first example of a normal charger, charging the battery, disclosed in lined Japanese patent application № 08-031461.
Charger for the first example, must charge the battery with a specific output voltage. The charger is configured so that the reference voltage for the determination as to whether charging voltage, which must be connected to the battery specified target charging voltage may be subject to a variable resistor
In addition, the first example is configured so that the charging voltage is driven on the basis of the reference voltage so that to reach the target of charge voltage.
A second example of conventional charger disclosed in lined Japanese patent application № 2003-284334. In the second example, the first reference voltage to bias circuit level with which triggers a second reference voltage greater than the first reference voltage supplied to the integrated circuit. Submission of the second reference voltage integrated circuit is controlled by pulse width modulation (PWM), which provides, therefore, the change in output voltage integrating circuit 0 V to second reference voltage.
Summary of being invention
In the tool with the actuator supplied from the battery as required output voltage batteries varies depending on the type of instrument electric, battery charger, power necessary to charge batteries that can change. Therefore described above in the first example, you might have a problem, which is that when the user brings to the workplace several types of instruments with electric drive, you must also bring to the job several types of chargers.
With that said, in the first example, you can use the output voltage of the integrated circuit in the second example, as the reference voltage, instead of the reference voltage is generated through the use of a variable resistor. However, although the range of output voltage of integrated circuits in the second example could be broader than the range of change of voltage in the first example, we can understand that if the duty cycle of the PWM signal is not installed properly, the output voltage integrated circuits is not relevant to the given one.
According to the present invention proposed charger specifically designed for battery power tools to, and in which the reference voltage for the determination as to whether the charging current for the battery target charging voltage can be changed to any value within the appropriate range.
Charger, according to the invention, contains a block of output of the charging voltage, the unit installation time, the block output signal PWM, generating block of the reference voltage, the power limit of the reference voltage, the unit of generation voltage detected and the control unit charging voltage.
In the charger unit output of the charging voltage outputs battery charging voltage, which is the voltage for charging batteries for power tools to; block installation time sets the duration of activation of the PWM signal, based on target charging voltage, which is the target voltage for charging voltage; the block output signal PWM outputs PWM signal with a time to be determined with the help of unit of time; block generate a reference voltage generates the reference voltage for the determination as to whether charging voltage target charging voltage, by smoothing the PWM signal that is output from the block output signal PWM; block restrictions reference voltage limits at least one from the maximum or minimum value of the reference voltage, generated box generation the reference voltage; block the generation voltage detected charger detects the voltage output from the block output of the charging voltage, and generates the detected voltage, which is the voltage corresponding to the discovery; and the control unit charging voltage controls the charging voltage is derived from the block output of the charging voltage, based on the detected voltage and core voltage.
In the charger, containing the above blocks, you can generate a reference voltage, variable to any value by smoothing the PWM signal. It is possible to limit, at least one from the maximum or minimum value of the reference voltage. Given this, if at least one from the maximum or minimum value of the reference voltage is properly installed, you can prevent the deviation from the reference voltage from the appropriate range, even when the duration of activation of the PWM signal is not installed properly.
That is, according to the invention of the proposed charger, where the reference voltage can be changed to any value within the appropriate range.
The block limits of the reference voltage can be configured any way to limit, at least one from the maximum or minimum value of the reference voltage.
For example, the power limitation voltage reference may include the first resistor, the second resistor and a third resistor. In the block limits of the reference voltage PWM signal can be served at one end of the first resistor, the specified primary voltage can be served at one end of the second resistor and given a second voltage greater than first tension, can be served at one end of the third resistor. In addition, the other end of the first resistor, the other end of the second resistor and the other end of the third resistor can be connected to each other.
In case when the block limits of the reference voltage is configured in the manner described above, when the amplitude of the voltage signal PWM, which can determine the value of the reference voltage, the magnitude of the first voltage, the value of the second voltage, resistance value of the first resistor, the value of resistance of the second resistor and resistance value of the third resistor, are set accordingly, the maximum value and minimum value of the voltage generated at the point where the other end of the first resistor, the other end of the second resistor, and the other end of the third resistor connected to each other, may be limited to a predetermined value.
Accordingly, serving as the reference voltage at the control unit charging voltage is the voltage, which is generated in the point where the other end of the first resistor, the other end of the second resistor and the other end of the third resistor connected to each other, for the value of the reference voltage, which must be connected to the control unit charging voltage may be allowed deviation from the appropriate range.
For example, the voltage PWM signal when the logic level of the PWM signal is Low, can be set to be equal to the first voltage, and the voltage amplitude of the PWM signal can be set to be equal to the voltage differential between the voltage and the second voltage.
In this case, when the duration of activation of the PWM signal becomes, for example, maximum (that is, 100%), the value of the reference voltage submitted on one end of the first resistor, and the value of the second voltage submitted on one end of the third resistor, are the same.
In the case described above, for the block limits of the reference voltage is formed equivalent circuit, in which the first resistor and a third resistor connected in parallel with each other, and the second resistor connected in series with parallel connected circuit. In the equivalent circuit, essentially, the reference voltage has a value obtained by dividing the voltage amplitude of the PWM signal (a voltage difference between the voltage and the second voltage) through the United resistor formed the first resistor and a third resistor, and the second resistor.
When the duration of activation of the PWM signal is minimal (i.e., 0%), the value of the reference voltage submitted on one end of the first resistor, and the value of the first voltage submitted on one end of the second resistor, are the same.
In the case described above, for the block limits of the reference voltage is formed equivalent circuit, in which the first resistor and the second resistor connected in parallel with each other, and a third resistor connected in series with parallel connected circuit. In the equivalent circuit, essentially, the reference voltage has a value obtained by dividing the voltage differential between the voltage and the second voltage through the United resistor formed the first resistor and the second resistor, and a third resistor.
Thus, in accordance with the above block limits of the reference voltage, it is possible to create the maximum value of the reference voltage is less than the amplitude of the voltage signal PWM, and create minimum value of the reference voltage than the voltage of the PWM signal when the logic level of the PWM signal is "Low".
The unit of generation of the reference voltage can be configured any way to smooth out a PWM signal. For example, the unit of generation of the reference voltage can include at least one capacitor to smooth the PWM signal.
In addition, as described above charger may include the detection unit reference voltage and the power adjustment cycle. Detection unit reference voltage detects the value of the reference voltage. Block adjustment cycle regulates the time set by the unit installation time, so the value of the reference voltage is detected with the detection unit reference voltage matches the target value of the reference voltage, which is the target voltage reference voltage, in accordance with the target charging voltage.
In the charger, presents as described above, since the duty cycle of the PWM signal is adjustable so that the value of the reference voltage matches the target value of the reference voltage, the reference voltage can be accurately communicated to the target reference voltage and, optionally, the charging voltage can be accurately communicated to target the charging voltage.
Target charging voltage can be changed during charging or changed during the charge.
The charger can include the installation unit target charging voltage, which sets a target charging voltage, based at least on one specified condition of installation.
In this case, it is possible to set the target charging voltage in line, at least one condition installation.
In case when the charger includes the detection unit environment, which detects the state of the environment around the charger, at least, the result of the detection unit detect the state of the environment can be set to block the installation target charging voltage as at least one installation conditions.
In this case, since it is possible to set the target charging voltage depending on the state of environment in the charger, the battery can be charged charging voltage depending on the state of environment charger.
Detection unit environment can define any environment as object detection. Object detection may be such as temperature, humidity, etc.
In case when the charger includes a block of information about the battery, which gets battery battery information, which is information that is associated with battery, for example, at least, battery information received by the unit receiving information about the battery, such information can be installed in the unit installation target charging voltage as at least one installation conditions.
In this case, since it is possible to set the target charging voltage depending on the battery information, the battery can be charged charging voltage depending on the battery information.
Information about the battery can be any information relating to the battery.
If battery information is information suggesting that at least one of the characteristics of the battery, it is possible, for example, to set the target charging voltage based, at least one of the characteristics of the battery and optional charge the battery charging voltage is dependent, at least one of the characteristics of the battery.
If battery information is information suggesting history of use, the battery may, for example, to set the target charging voltage depending on the history of battery use, and optionally to charge the battery charging voltage is dependent on the history of battery use.
Brief description of drawings
The invention is further explained in the description of preferred options of the incarnation, with links to the accompanying drawings, in which:
Fig. 1 - General view of the front embodiment variant charger, showing the appearance of the charger;
Fig. 2 - structural scheme of the electrical configuration charger with attached battery;
Fig. 3 - electric scheme showing the details of the schema configuration, charger and power, circuit detection and temperature control circuitry charge;
Fig. 4 is a block diagram of the sequence of operations control method battery.
Description of the preferred option embodiment of the invention
As shown in Fig. 1 charger 1 contains in the upper part of the connecting section 2. The connecting phase 2 is configured so that the battery 20 (Fig. 2 and 3)attached with the opportunity removal of the battery charger 1. In more detail, the connecting phase 2 is configured so that the battery can be connected with the possibility of removal of the battery charger 1 by sliding the battery 20 on the connecting section at the back to the front side of the battery charger 1. In addition, the connecting phase 2 is configured so that the battery can be separated from the charger 1 by sliding the battery 20 on the connecting section 2 from the front to the back side of the battery charger 1.
As shown in Fig. 2, charger 1 contains a diagram 11 charger power supply source, schema 12 control and power, diagram 13 detection overvoltage diagram 14 definitions voltage, figure 15 detection of electric current 15, figure 16 determining the temperature of the main block 17 management scheme 18 management charge scheme 19 prohibition of charging, the battery 20 and connecting plug 21.
11 charging power supply converts the industrial power source (in this version of the incarnation is the power of an alternating current (AC) 100 VA)supplied from the outside through the connecting plug 21, in the capacity of a direct current (DC) (this version of the incarnation is the charging capacity of 42 VA DC current maximum) for battery 20. 11 charging power supply charger delivers power to the battery 20 through the line L1 hand positive voltage and L2 side of negative voltage.
Chart 12 control of the power supply converts the power of the industrial and power, supplied externally via the connecting plug 21, at the DC power (power management) to ensure the work of all the schemes in the charger 1, by submitting a power control for each schema.
Diagram 13 detection overvoltage protection detects, did voltage (charging voltage) between the supply lines (line L1 hand positive voltage and L2 side of negative voltage) voltage previously defined as the surge. Diagram 13 detection overvoltage displays a diagram 19 prohibition of charge signal detection overvoltage with two logic level voltage) depending on the result of the detection. More specifically, the scheme 13 detection overvoltage this version of the incarnation establishes a logical signal level detect overvoltages as High, when the scheme 13 detection overvoltage determines that charging voltage not reached the surge. When the scheme 13 detection overvoltage determines that charging voltage has reached over voltage diagram 13 detection overvoltage sets the logical level of signal detection overvoltage as "Low". Logical levels of signal detection overvoltage in relation to the determination of the scheme 13 detection overvoltage can be reversed relatively described above logic levels.
Diagram 14 voltage detection determines the amount of charging voltage and displays on the main unit 17 management, first signal voltage detection with voltage (analog value), corresponding to the result of the detection.
Chart 15 of determining current determines the amount of electric current flowing through the line L2 parties negative voltages, and outputs main unit 17 control signal electrical current with a voltage (analog value)corresponding to the definition.
Chart 16 definition of temperature detects temperature (approx the same, and that the ambient temperature around the charger 1) inside the battery charger 1 and displays on the main unit 17 control signal of temperature determination, having voltage (analog value), corresponding to the result of the detection.
Main unit 17 management is the so-called single-chip microcomputer and includes at least a Central processing unit (CPU) 171, permanent memory (ROM) 172, random access memory (RAM) 173, port 174 parallel input / output (I/O)interface 175 serial communication (I/F), and analog-to-digital (A/D) Converter 176.
In the main unit 17 control CPU 171 performs various processes in accordance with the various programs stored in ROM 172. In addition, in the main unit 17 control analog signals entered in the input I/O ports 174, converted into digital signals and A/D-Converter 176 to read CPU 171.
Entered into the main unit 17 control signals from batteries are 20 signal resolution charging and data signal.
The enable signal charge is a signal binary logic. When the battery charge is allowed 20, logic level signal resolution charge is set to be High, at that time, as when the battery charge is 20-Smoking, logic level signal resolution charge is set to be "Low". Logic level signal resolution charge can be set to either "Low when the battery charge is allowed 20, while the logic level signal resolution charge can be set to either "High"when battery power 20-Smoking.
The enable signal charge may be multivalued analog signal (at least three-digit analog signal). In this case, when the battery charge is allowed 20, voltage signal resolution charge can be set for the voltage that does not match the voltage under the above logical level in the state of "Low", and when the battery charge is 20-Smoking, logic voltage level permissions charge can be set to either "Low".
Main unit 17 control scheme 18 charge control and schema 19 prohibition of charge, based on the first signal detection voltage, signal detection of electric current, the signal detecting temperature, signal resolution charge and the data signal.
In more detail, the main unit 17 control displays the signal PWM (explain below) and signal discharge explained below, figure 18 charge control and signal definitions of the charge is on the diagram 19 prohibition of charge, and discover this reference voltage (explained below) from the schema 18 charge control. Definition signal charge is a signal binary logic. When the battery charge is allowed 20, logic level signal definitions charge is set to be High, however, when the battery charge is 20-Smoking, logic level signal definitions charge is set to be "Low". Logic level signal definitions charge can be set to either "Low when the battery charge is allowed 20, while the logic level signal definitions charge can be set to either "High"when battery power 20-Smoking.
Chart 18 charge control controls the operation of the charging scheme 11 charging and power, based on the PWM signal and the signal of a discharge from the main unit 17 management.
Diagram 19 prohibition of charge prohibits the operation of the charging scheme 11 charging and power, when at least one logical levels of detection signal voltage, signal resolution charge and signal definitions charge is Low (in other words, when detected an overvoltage or denied the charge. More details when all logical levels of detection signal voltage, signal resolution charge and signal definitions charge level in the state of "High", the 19 prohibition of charge sets the logical level of the output signal to figure 11, charging power supply is in a state of " High", allowing the operation of the charging scheme 11 charger power supply source. When at least one logical levels of detection signal voltage, signal resolution charge and signal definitions charge is logical level in the state of "Low"scheme 19 prohibition of charge sets the logical level of the output signal to figure 11, charging power supply status to "Low", prohibiting the operation of the charging scheme 11 charger power supply source.
The battery is equipped with 20 diagram 201 battery management and part 202 elements.
Diagram 201 battery management includes at least the CPU (not shown), ROM (not shown), RAM (not shown), non-volatile memory block (not shown), where the data is stored with the possibility of overwriting, integrated circuit (IC) control (not shown) to control the part 202 elements and serial communication (not shown). Diagram 201 battery management controls the operation of battery life 20.
Diagram 201 battery management displays the signal permissions charge on the main unit 17 management (more specifically, on one of the input ports of the I/O of 174 available in the main unit 17 management), and the outline 19 prohibition of charge and displays the signal data in the main unit 17 management (more specifically, I/F 175 connection, available in the main unit 17 management).
Part 202 items includes many elements connected in series. Both ends part 202 elements electrically connected, respectively, to the line L1 hand positive voltage and the line L2 side of negative voltage.
As shown in Fig. 3, 11) charger power supply includes switching scheme 111 and schema 112 transformer rectifier.
Switching scheme 111 converts industrial power source DC power and periodically displays the power to the DC circuit 112 transformer rectifier. This version of the incarnation switching scheme 111 includes a full-wave rectifier circuit and at least one switching element. Switching scheme 111 configured in such a way that full-wave rectification industrial power source is a full-wave rectifier and dwuhvalentnoe rectified industrial power source periodically displayed on the diagram 112 transformer rectifier by switching switching element with frequencies higher frequency industrial source. Switching scheme 111 performed stop switch the switching element, when the logic level output voltage diagram 19 prohibition of charge indicates prohibition of charge.
Diagram 112 transformer rectifier contains a transformer 113, diode and capacitor C2.
In the transformer 113 positive side of transformer secondary winding 113 connects with line L1 hand positive voltage across the diode D1, whereas negative side of transformer secondary winding 113 connected with L2 side of negative voltage and a negative electrode (in the charger l is set to 0 In) diagram 12 power management, which is not shown in Fig. 3. Transformer 113 lowers voltage power DC, periodically submitted to the primary winding of the transformer 113 switching scheme 111, on the secondary winding of the transformer 113 to output power DC low voltage on the line L1 hand positive voltage and to L2 side of negative voltage.
Diode D1 his anode is connected to the positive side of the transformer secondary 113 and connected to the cathode line L1 hand positive voltage.
Capacitor C2 is the so-called electrolytic capacitor. The capacitor C2 its positive electrode is connected to the line L1 hand positive voltage and a negative electrode is connected to the L2 side of negative voltage. That is, power DC, periodically removed from the transformer secondary 113, smoothed the diode and capacitor C2 to be fed to the battery 20 as the charge capacity.
Chart 16 definition of temperature contains a thermistor TM1, resistors R10 and R11 and capacitor C3.
Thermistor TM1 is a resistor whose resistance varies depending on the ambient temperature. Thermistor TM1, corresponding to the present variant of the incarnation, is a resistor in which the value of resistance decreases with increasing temperature. Thermistor TM1 can be a resistor whose resistance increases with increasing temperature of the environment.
One end of thermistor TM1 is connected with the positive electrode circuit control 12-supply source (in this version of the incarnation voltage Vcc is a constant voltage of 5 V) through the resistor R10, and the other end is connected to the negative electrode scheme 12 control and power.
Resistor R11 one end connected to the area between thermistor TM1 and resistor R10 and the other end is connected to one of the input ports of the I/O of 174 available in the main unit 17 management.
Capacitor C3 one end of which is connected with the other end of the resistor R11 and the other end is connected to the negative electrode scheme 12 control and power. Thus, capacitor C3 and resistor R11 form a low-pass filter to high-frequency electrical noise could be deleted.
In the diagram 16 definition of temperature is made as described above, voltage Vcc control power supplied from a schema 12 control and power, says resistor R10 and thermistor TM1. Divided voltage is displayed as a signal to determine the temperature on the main unit 17 management.
In the diagram 16 determining the temperature, corresponding to the present variant of the incarnation, as thermistor TM1 has described above electrical characteristics, when the ambient temperature scheme of determining the temperature increases, the voltage signal detecting temperature is reduced and when the ambient temperature scheme of determining the temperature decreases, the signal voltage detection of temperature increases.
Chart 18 charge control contains the schema 181 generate a reference voltage, bit scheme 182, the scheme 103 determine the charging voltage operational amplifier OP1 and diagram 184 output.
The scheme 181 generate a reference voltage contains resistors R1, R3, and R4 and capacitor C1.
Resistor R1 one end is connected to one of the output ports of the I/O of 174 available in the main unit 17 management, and the other end is connected with reinvestiruet the amplifier input OP1 and with one of the input ports of the I/O of 174 available in the main unit 17 management.
The capacitor C1 one end connected to the terminal nennwertlose amplifier's input OP1 and the other end is connected to the negative electrode scheme 12 control and power.
Resistor R3 one end is connected to the positive electrode scheme 12 control the power supply and the other end connected to the terminal nennwertlose amplifier's input OP1.
Resistor R4 is connected to the negative electrode scheme 12 control the power supply and the other end connected to the terminal nennwertlose amplifier's input OP1.
That is, in the scheme of 181 generate a reference voltage other end of the resistor R1, the other end of the resistor R3 and the other end of the resistor R4 are connected to each other.
Bit scheme 182 contains transistor Tr1 and resistor R2. Transistor Tr1 is bipolar transistor n-p-n type. Collector transistor Tr1 connected to the terminal nennwertlose amplifier's input OP1. Emitter of transistor Tr1 is connected to the negative electrode scheme 12 control and power. The base of the transistor Tr1 is connected through a resistor R2 with one of the output ports of the I/O of 174 available in the main unit 17 management.
Diagram 183 detection of charging voltage contains in itself resistors R5, R6, R7, and R8.
Diagram 184 o contains a resistor R9 and the optocoupler 185. Resistor R9 one end is connected to the output pin of the amplifier OP1 and the second end is connected to the cathode LED 185a optocouplers 185. Anode LED 185 connected to the line (L1 hand positive voltage. The emitter and collector phototransistor Tr2 in the optocoupler 185 connected with the switching scheme 111.
In figure 18 management charge is made as described above, when the PWM signal is fed to the conclusion nennwertlose amplifier's input OP1 through resistor R1 from the main unit 17 management, PWM signal, given from the main unit 17 management smoothed capacitor C1. Smoothed PWM signal is fed to the conclusion nennwertlose amplifier's input OP1 as a reference voltage for the determination as to whether charging voltage target charging voltage. PWM signal in this version of the incarnation is set so that when the logic level of the PWM signal is Low, the voltage PWM signal is 0 Century PWM Signal in this version of the incarnation also be installed so that the voltage amplitude of the PWM signal is equal to the voltage, Vcc positive electrode scheme 12 control and power.
In figure 18 management charge, when the duration of activation of the PWM signal maximum (that is, 100%), the voltage (Vcc), filed as described above, on one end of the resistor R1, and the voltage (Vcc), filed as described above, on one end of the resistor R3, is one and the same.
In this case, in the scheme of 18 charge control is formed equivalent circuit, in which the resistors R1 and R3 are connected in parallel with each other, and resistor R4 is connected in series with parallel connected circuit. Thanks to the equivalent circuit, designed voltage (reference voltage), submitted for conclusion nennwertlose amplifier's input OP1, has the value obtained by dividing the voltage Vcc through a consolidated resistor R1 and R3 resistor R4.
In figure 18 management charge, when the duration of activation of minimum PWM signal (that is, 0%), value of a voltage (0 V), filed as described above, on one end of the resistor R1, and the voltage (0 V), filed as described above, on one end of the resistor R4 are the same.
In this case, in the scheme of 18 charge control is formed equivalent circuit, in which the resistors R1 and R4 are connected in parallel to each other and resistor R3 is connected in series with parallel connected circuit. Thanks to the equivalent circuit, designed voltage (reference voltage), submitted for conclusion nennwertlose amplifier's input OP1, has the value obtained by dividing the voltage Vcc through a consolidated resistor R1 and R4 and resistor R3.
Values for resistors R1, R3, and R4 in this version of the incarnation are set so that when the duration of activation of minimum PWM signal, voltage (reference voltage), submitted for conclusion nennwertlose amplifier's input OP1, has the value corresponding to the lower limit (in this embodiment, constant voltage 18 In) the target of the charging voltage.
In figure 18 management charge, when the current signal to enable transistor Tr1 is served on the base of transistor Tr1 through the resistor R2 from the main unit 17 management, transistor Tr1 is included, to defuse the electric charge accumulated in the capacitor C1, on the negative electrode scheme 12 control and power.
In addition, in figure 18 management charge amplifier OP1 compares the second signal voltage detection voltage and the reference voltage. When the voltage of the second signal detection voltage not reached the reference voltage, the logic level output voltage of the amplifier OP1 is set to be High, and when the voltage of the second signal detection voltage has reached the reference voltage, the logic level output voltage of the amplifier OP1 is set to be "Low".
Additionally, in figure 18 charge control when the logic level output voltage of the amplifier OP1 is set to be High, LED 185a in the optocoupler 185 off and the phototransistor Tr2 in the optocoupler 185 off. When the logic level output voltage of the amplifier OP1 is set to be "Low", LED 185a in the optocoupler 185 included and a phototransistor Tr2 in the optocoupler 185 included. When the phototransistor Tr2 off, switching scheme repeats switching switching member, sets the enable (ON) switch element in a switching cycle is gradually increasing. As a result of this operation the switching, the charging voltage is gradually increasing. When the phototransistor Tr2 is enabled, switching scheme 111 stops switching switching element. Stopping switching operations charging voltage decreases.
Next we will explain the process of management of charge, executed by the main unit 17 management (more specifically, the Central processor 171).
Main unit 17 management performs this process, when the battery 20 connected to a charger 1.
As shown in Fig. 4 first determined whether the logic level signal data entered from the battery 20, in the state of "Low" within a specified time period (in this version of the incarnation is 10 MS) (S10). In other words, at the stage S10 is determined, can be requested from the battery 20 data signal.
If the logic level signal data not corresponding to "Low" in a given period of time (at time S10: None), this process immediately jumps to the stage S120 (explained below). If the state of the logical signal level data is the state of "Low" for a specified period of time (at time S10: Yes, data CV is requested for schema 201 battery management 20 (S20). Data CV are data that have at least one of the characteristics of the battery 20 (for example, the battery capacity 20) and the use of batteries, 20, etc.
When data CV taken (S30), the temperature is determined by the diagram 16 definition of temperature, it turns out, on the basis of the temperature signal from the schema of the 16 definition of temperature (S40). In the future, based on the data CV and temperature, defined schema 16 definition of temperature, set the target charging voltage corresponding to battery power 20 (S50). After that, set the target reference voltage (S60), which must be set as the reference voltage depending on the target of the charging voltage. Target reference voltage corresponding target charging voltage, can be pre-stored in ROM 172, available in the main unit 17 management. Alternatively, the procedure for calculation of target reference voltage, which must be set in accordance with the target charging voltage, can be pre-stored in ROM 172, and CPU 171 can calculate the target reference voltage in accordance with the calculation procedure.
After installing the target reference voltage is finished, calculated activation time, the respective target charging voltage, and the calculated activation time is set as the duty cycle of the PWM signal to be displayed (S70). PWM signal to the time set on the stage S70, displayed (S80) and reference voltage is detected (S90). Then determined whether the detected reference voltage with a target reference voltage (S100).
If you found the reference voltage is not the same as the target reference voltage (phase S100: No)activation time is adjustable (S110) and then the process returns to step S100. At the stage S110 activation time can be adjusted by increasing or decreasing the duration of the inclusion to a given value. Alternatively, the difference between the detected voltage reference and target reference voltage can be calculated and the activation time can be adjusted based on the calculated difference.
If you found the reference voltage matches the target reference voltage (phase S100: Yes)is detected whether full battery charge 20 or detected whether the deviation from the norm in the battery 20 (S120). If no full battery charge 20, no deviation from the norm in the battery 20 not found (on stage S120: No, the current process is returned to the stage S10. If found full battery charge 20 or deviation from the norm in the battery 20 (at the stage S120: Yes, the withdrawal of the PWM signal is terminated (S130) and then transistor Tr1 is enabled (S140). After the described process is finished.
In the charger 1 made as described above, could be generated reference voltage, which can be any value, by smoothing the PWM signal and, optionally, to limit maximum and minimum values of the reference voltage. Therefore, you can prevent the deviation from the reference voltage from the appropriate range, even if the duty cycle of the PWM signal is not properly installed. That is, charger 1 can change the reference voltage to any value within the appropriate range.
More specifically, in the battery charger 1 to the maximum value of the reference voltage can be set less than the voltage Vcc, while the minimum value of the reference voltage can be set greater than 0 C. In addition, in the charger 1 electric charge accumulated in the capacitor C1, may drain transistor Tr1 on the negative electrode scheme 12 control and power. Thus, the reference voltage can be quickly reduced.
In addition, in the charger 1, since the duty cycle of the PWM signal is adjustable so that the reference voltage matches the target voltage reference, the reference voltage can be precisely target reference voltage and, optionally, the charging voltage can accurately target the charging voltage.
Although that was described above was one embodiment of the present invention, it should be understood that the invention should not be limited to the above version of implementation and may be implemented in various forms within the technical scope of the present invention.
For example, in the charger 1 corresponding to the above incarnation, the reference voltage is generated by smoothing the PWM signal. However, to generate a reference voltage can be used digital-to-analog Converter.
In addition, in the charger 1 corresponding to the above incarnation, is determined by the ambient temperature of the battery charger 1 and then set the activation time, based on a certain temperature. However, to set the duration of inclusion, based on the state of the environment, can be detected another indicator of environment, other than temperature, for example, humidity.
In the above-described version of the incarnation transistor Tr1 is bipolar transistor n-p-n type. However, the transistor Tr1 may be bipolar transistor p-n-p type. Alternative, transistor Tr1 may be other switching element, such as field-effect transistors or integrated gate bipolar transistor (IGBT).
Moreover, in the above embodiment, to smooth signal PWM one capacitor. However, the smoothing of the PWM signal can be performed using a variety of capacitors, each of which is connected in series or parallel.
Also, although the above-described version of the incarnation main unit 17 control displays a PWM signal, electronic circuit that produces PWM signal, may be stipulated separately.
In the above embodiment, the voltage amplitude of the PWM signal is set equal to the voltage, Vcc. However, the amplitude of the voltage of the PWM signal can be installed on a different voltage on voltage Vcc.
Although the above-described version implemented on one end of the resistor R3 voltage is Vcc, may be filed with a different voltage on voltage Vcc. Also, although the above-described version of the incarnation voltage at one end of the resistor R4 is set equal to 0, the voltage can be set to different voltage from 0 Century
In addition, the above-described version of the incarnation to compare the value of the reference voltage and the voltage of the second definition signal voltage operational amplifier is used. However, instead of an operational amplifier can be used comparator.
Additionally, in the above-described version of the incarnation scheme 181 generate a reference voltage is made with the possibility of restrictions as to the maximum value and minimum value of the reference voltage. However, the scheme 181 generate a reference voltage can be made with the possibility of restrictions only maximum values, or only the minimum value of the reference voltage.
In the above-described version of the incarnation scheme in which the resistors R1, R3 and R4 are connected to each other, is used to limit the maximum and minimum values of the reference voltage. However, to limit the maximum and minimum values of the reference voltage can be used scheme, different from the scheme described above. For example, to restrict, at least, only maximum values, or only the minimum value of the reference voltage can be used well-known scheme limiter using at least one operational amplifier.
In addition, the scheme 181 generate a reference voltage in the above-described version of the incarnation is configured to limit the maximum or minimum value of the reference voltage when the duration of activation of the PWM signal is 100% or 0%. However, the scheme 181 generate a reference voltage can be configured to limit the maximum and minimum values of the reference voltage when the time is different from 100% and 0%. In this case can be used, for example, the above-described scheme limiter.
Main unit 17 management, which in the above-described version of the incarnation is a microcomputer can be done using ASIC (application application-specific integrated circuits), or programmable logic devices, such as FPGA (programmable gate array).
1. Charger, containing: block charger output voltage, made with the possibility of output to the battery charging voltage, which is the voltage of the battery for power tools to; block installation time, made with the possibility of installation cycle of the PWM signal (PWM), based on the target charging voltage, which is the target voltage for charging voltage; the block output signal PWM, made with the possibility of conclusion of the PWM signal with a time set by the block installation time; block generate a reference voltage, are designed to generate a reference voltage for the determination as to whether charging voltage target charging voltage by smoothing the PWM signal that is output from the block output signal PWM; block limits of the reference voltage, made with the possibility of restrictions, at least one from the maximum or minimum value of the reference voltage is generated by a generating block of the reference voltage; the unit of generation detected voltage, which detects charger the voltage output from the block output of the charging voltage, and generates detective voltage, which is the voltage corresponding to the discovery; and the control unit charging voltage, which controls the charging voltage is derived from the block output of the charging voltage, based on detektivnom voltage and core voltage.
2. Charging device of claim 1, wherein the power limitation voltage reference contains: the first resistor; the second resistor; and the third resistor, with PWM signal is applied to one end of the first resistor, first set the voltage applied to one end of the second resistor, and given a second voltage greater than the first voltage is applied to one end of the third resistor, and the other end of the first resistor, the other end of the second resistor and the other end of the third resistor connected to each other.
3. Charging device according to claim 2, and the voltage signal PWM is the first stress, when the logic level of the PWM signal status is set to "LOW", and the amplitude of the voltage of the PWM signal is equal to the voltage differential between the voltage and the second voltage.
4. Charging device according to claim 1 in which the generation of the reference voltage contains at least one capacitor to smooth the PWM signal.
5. Charging device according to claim 4, additionally contains a bit block, made with the possibility of discharge of the electric charge accumulated at least one capacitor.
6. Charging device according to claim 1, additionally contain: the definition block of the reference voltage, made with the possibility of determining the value of the reference voltage; and block adjustment cycle, made with the possibility of regulation time, the installed mounting block-time, to the value of the reference voltage, as defined by the definition block of the reference voltage, coincided with the target value of the reference voltage, which is the target voltage reference voltage in accordance with the target charging voltage.
7. Charging device according to claim 1, additionally contains a unit installation target charging voltage, made with the possibility of setting a target of charging voltage, based at least on one specified condition of installation.
8. Charging device according to claim 7, additionally contains the detecting unit of the environment, made with the possibility of determining the state of the environment around the charger, and, at least, the determination of the detection unit environment is installed in the actuator installation target charging voltage as at least one installation conditions.
9. Charging device according to claim 7, optionally containing a block of information about the battery, made with the possibility of obtaining from the battery the battery information, which is information that is associated with the battery, and, at least, battery information received by the unit receiving information about the battery, installed in the unit installation target charging voltage as at least one installation conditions.
10. Charger for 9, in which information about the battery is information suggesting that at least one of the characteristics of the battery.
11. Charger for 9, in which information about the battery is information suggesting the history of battery use.