The device balance stress

 

(57) Abstract:

Usage: to maintain the health of the batteries in the storage mode. The inventive device balance voltage bidirectional e-n=channel switch with the storage capacitor at the input, the output is connected to the battery, the point of connection elements which are connected to the same outputs of the electronic switch, m control inputs which are connected to the corresponding outputs m=bit counter. The control input of the counter is connected to the output of the pulse generator, enable input of which is connected to the output node of the comparison voltage. The first input node of the comparison is connected to a source of reference voltage, and the second with one of the elements of the battery. The device ensures the alignment of consumption of the resource elements of the battery in the storage mode by automatic periodic recharging of the most depleted elements due to the capacity of elements of the same battery with a higher voltage. 1 Il.

The invention relates to electrical engineering and can be used to maintain the operability of unmanned accompa density of the electrolyte [1] the Disadvantage of this method is the inability to control sealed battery.

There is also known a method and a control device with a voltmeter status sealed battery voltage [2] the Disadvantage of this method and device is the need for periodic control of discharged elements even when there is sufficient energy in the rest of the elements. The closest to the technical implementation of the proposed device is the inverter DC-to-DC containing a bidirectional electronic switch with a storage capacitor at the input and a chain of capacitors at the output, which with the help of a generator and a counter according to a certain algorithm storage capacitor sequentially and serially connected to the capacitor chain and equalize the tension on them to the level of the medium [3]

This device is selected as a prototype. The main disadvantage of this device is a continuous cycle of operation even in the presence of equality stress on the output capacitors.

In the balance voltage bidirectional e-N-channel switch with the storage capacitor at the input, the output is connected to the battery, point connect the 2m) which is connected to the respective outputs of the m-dimensional counter, a control input connected to the output of the pulse generator, enable input of which is connected to the output node of the comparison voltage, the first input connected to a resistive voltage divider, and the second with N-1 output of the electronic switch.

The essence of the proposed technical solution is the alignment of the consumption of the resource elements of the battery in the storage mode by automatic periodic recharging of the most depleted elements due to the capacity of elements of the same battery that has a higher output voltage. Since the elements of the battery are devices with limited resources, when the alignment of resource consumption between the individual elements is achieved the maximum time maintaining a faultless condition of the battery as a whole. Significant differences of the proposed technical solutions are:

1. Control using a resistive divider and node comparison of the voltages on the individual elements of the battery.

2. Automatic periodic charge is discharged elements by elements,tion.

The device includes a pulse generator 1, the output of which is connected to the input m-bit counter 2. Storage capacitor 3 is connected to the input of the N-channel bi-directional electronic switch 4, m control inputs which are connected to the corresponding outputs of the counter 2. Rechargeable battery 5 from the N-1 elements connected between the first and last output of the switch 4. In parallel, the battery connected to a resistor divider from the elements 6 and 7, the output of which is connected to the first input node of the comparison voltages 8. Elements 6 and 7 are chosen from the condition

R7< / BR>
Site comparison voltages 8 contains the first comparator 81the upper threshold voltage and a second comparator 82the lower threshold voltage. The outputs of the Comparators 81and 82United through the element OR 83.

As a site of comparison may be used, for example, IC CS.

The device operates as follows.

When the charged battery voltage on all its elements will have approximately the same value and equal to the voltage drop across the element 7. At the inputs of the Comparators 81and 82the error voltage is lower then the storage capacitor 3 is connected to one of the elements of the battery 5. The device is in standby mode. At the discharge of one of the elements of the battery equality of the voltages at the inputs of the Comparators will be broken. As a result of triggering of one of the Comparators at the output of the element OR 83appears inhibit signal. After starting the generator and the meter switch 4 is periodic connection of the storage capacitor 3 to the elements of the battery 5. As a result of charge of the capacitor 3 from the same elements and discharge on the other ensures the alignment of the stresses on the elements 51,5N-1. When achieving equality stress the device again enters the standby mode. So, for example, charged the battery, consisting of 4 elements, the charge of each of which is equal to 1.5 volts, charge the whole battery will be 6 C. the voltage Drop across the element 7 will be 6/4 1,5 Century While ensuring the implementation of equal stresses in all elements of the battery and cell voltage divider 7. Assume that the circuit is in the standby mode when the threshold of 0.1 volts. If during the storage battery 54will be reduced to 1 V, the charge across the battery will be 5.5 V, and the voltage h is em comparator 81will begin the process of equalization of stresses. If in the process of storing the charge of one of the elements 51.53will be reduced to 1 V, the voltage difference on the item 54and item 7 of the divider will be 1.5-1,33 0,17 Century will Trigger the comparator 82will begin the process of equalization of stresses. When using the IC series CMOS device consumes the current level of discharge of the battery and does not have a significant impact on its discharge.

Thus, with this device ensures the alignment of the resource consumption of individual elements of the battery and is achieved by increasing the average uptime of the battery in the storage mode.

The DEVICE BALANCE STRESSES that contains bi-directional e-N-channel switch with a storage capacitor connected to its input, the pulse generator, the output of which is connected to the input m-bit counter (N=2m), m outputs of which are connected to respective inputs of an electronic switch, characterized in that between the first and last pin on an electronic switch connected to the battery containing N-1 serially connected, Alemanha connected to the first input node of the comparison voltage, the second input is connected to the resistive voltage divider, is in parallel with the battery, the output node of the comparison voltages is connected to allows the input of the generator, while the power supply of all the elements and nodes of the device connected to the battery, and the node comparison voltages includes two comparator in parallel with the United inputs, the outputs of which are connected through the OR.

 

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