Complete traction electric drive

 

The invention relates to electrical engineering and can be used in the development of high-frequency battery chargers and power supply with galvanic isolation output voltage of the traction drive battery electric vehicles. The technical result is an extension of functional properties. Complete traction electric drive provides traction motor armature winding through which the voltage regulator on a fully managed key elements connected to the traction battery. Due to the introduction of complete traction electric charging relay and two-winding inductor managed to use the same elements for power dvenadtsatiraundovogo electrical equipment and charge automotive batteries while driving, and to provide charge traction batteries with a power factor close to unity, in the Parking lot. 1 Il.

The invention relates to electrical engineering and can be used in the development of high-frequency battery chargers and power supply with galvanic isolation output voltage of the traction drive accumulative battery uses high-frequency half-bridge transistor inverter with galvanic isolation of the output voltage.

A disadvantage of this device is the lack of possibility to exercise the power of dvenadtsatiraundovogo electrical equipment (lights, wiper, etc.,) and the charging motor (12 V) battery during driving of the vehicle, i.e., forced to carry just as "ballast". In addition, this device does not provide the electrical energy consumption of the network power factor close to unity.

The closest technical solution is a device, RF patent 2127200, class B 60 L 15/08, H 02 J 7/10, 1999 (prototype), in which charging of the traction battery used electric power Converter drive, and power factor close to unity.

A disadvantage of this device is significantly overstated the installed capacity of the key elements of the power Converter. This is because in the traction drive with a relatively small voltage (120 V) is required to commutate relatively large currents (250 a), at the same time when the battery charge at a relatively low current (16 A) is necessary to commutate the voltage (>300 V), i.e. the key elements should be selected at the maximum is considered rigid device is no block, exercising the power of dvenadtsatiraundovogo electrical equipment electric (lights, wiper, etc.,) and the charging motor (12 V) battery.

Technical solution aimed at enhancing properties.

To solve technical problems in the well-known complete traction electric drive containing the traction motor armature winding through which a voltage regulator having at least two output terminals connected to the traction battery; a secondary rectifier with an output filter; a transistor, the emitter of which is connected to the negative output terminal of the primary rectifier with input filter connected to the AC cord.

This zero output terminal of this rectifier is connected through a choke to the collector of the transistor; an inductor made double winding, the second winding is connected to the input of the secondary rectifier, the output of which through the first and second normally closed contacts of the charging relay is connected to the opposite car battery, and through the third and fourth normally open contacts connected to the opposite traction battery, and winding the material closed contacts of the charging relay is connected to the opposite traction battery.

The drawing schematically illustrates the proposed device.

Complete traction electric motor, and includes a traction motor 1, the armature winding through which the voltage regulator 2, having at least two output terminals connected to the traction battery 3; secondary rectifier 4 to the output filter; transistor 5, the emitter of which is connected to the negative output terminal 6 of the primary rectifier 7 with an input filter connected to the network cord 8.

This zero output terminal 9 of this rectifier is connected across the first winding of the inductor 10 to the collector of the transistor 5 and the choke 10 is made double, with the second winding connected to the input of the secondary rectifier 4, the output of which through the first 11 and second 12 normally closed contacts of the charging relay 13 is connected to the opposite car battery 14 and 15 through the third and fourth 16 normally open contacts connected to the opposite traction battery 3, and the winding of the charging relay 13 is connected to the input of the primary rectifier 7, and its output terminals 6 and 9, through fifth 17 and 18 sixth normally closed contact of the charging relay 13 is connected to the opposite traction battery to the winding of the traction motor 1, consequently, the moment they develop during the motion carried by the respective on - off controlled key elements 19, 20 of the voltage regulator 2. In practice, the role of key elements 19, 20 perform, or thyristors with a corresponding switching system, or power transistors. Since during the movement of the cord 8 is not connected, the winding of the charging relay 13 is de-energized and the se key Converter 21, which is formed by the transistor 5, two-winding inductor 10 and the secondary rectifier 4, is connected to the traction battery 3.

Periodic high-frequency switching on - off of the transistor 5 supply to the first winding of the two-winding inductor 10 pulse current during an off state of the transistor 5 is induced in the second winding is rectified and filtered by the output filter of the secondary rectifier 4, providing the power to dvenadtsatiraundovogo electrical equipment electric (lights, wipers, etc) and charge automotive batteries 14.

While parked, when it is necessary to make the charge of the traction battery 3, includes power cord 8 in Rosemeadow relay 13 and opening, thus the normally closed contacts 11, 12, 17, 18 and closing the normally open contacts 15 and 16. Thus the rectified mains voltage will be supplied to the single-ended input key of the Converter 21 and the amplitude of the pulse current in the first, and therefore the second winding of the two-winding inductor 10 will depend on the instantaneous value of the mains voltage, ensuring, thus, the consumption of electric power from the network power factor close to unity, due to the filter network current in the input filter primary rectifier 7.

Thus, enhancement of functional properties, due to the newly introduced charger relay 13 and the second winding of the inductor 10 is allowed to use the same elements for power dvenadtsatiraundovogo electrical equipment and charge automotive batteries while driving, and to provide charge traction batteries with a power factor close to unity in the Parking lot.

The use of the claimed device comprising electric JSC "AVTOVAZ" has shown its high reliability and ease of operation, and, in comparison with a base object that has substantially improved value The use of the inventive device is not limited to electric vehicles with traction batteries and can be used in vehicles with hybrid power plants in various electrical devices.

Claims

Complete traction electric drive containing the traction motor armature winding through which a voltage regulator having at least two output terminals connected to the traction battery; a secondary rectifier with an output filter; a transistor, the emitter of which is connected to the negative output terminal of the primary rectifier with input filter connected to the AC cord, while the zero output terminal of this rectifier is connected through a choke to the collector of the transistor, characterized in that the choke is made double, with a secondary winding connected to the input of the secondary rectifier, exit through which the first and second normally closed contacts of the charging relay is connected to the opposite car battery, and through the third and fourth normally open contacts connected to the opposite traction battery, the winding of the charging relay is connected to the input of the primary rectifier and its output terminal through the fifth and sixth normally closed contact of the charging relay is connected to the opposite traction battery.

 

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2 cl, 1 dwg

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