| 摘要 |
PURPOSE: A driving circuit in an electric vehicle is provided to improve instant acceleration ability with reverse electromotive force by charging the reverse electromotive force generated in braking to a battery from a condenser. CONSTITUTION: A driving circuit comprises a relay(50) supplying or isolating power by turning on or off; a first filter unit(60) removing vibration of power supplied from a battery(55); a second filter unit(65) removing vibration of back electromotive force generated in braking; a first switch unit(70) supplying or isolating the power into an inverter unit(85); a second switching unit(75) supplying or isolating the back electromotive force to the second filter unit; a third switching unit(80) supplying or isolating the power charged into a condenser of the second filter unit in accelerating; and an electric vehicle controlling management unit(45) turning on the second switching unit. The electric vehicle controlling management unit turns off the third switching unit after turning on for a specific time, turns on the second switching unit in braking, and turns on the relay and the first switching unit in driving. Thereby, the reverse electromotive force generated in braking is charged to the battery after charging to the condenser of the second filter unit.
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