The invention relates to the technical field of electric control of an electric vehicle, discloses a coil driving circuit for a high-voltage relay on the electric vehicle, and aims to overcome the defects of a high-side switch and a low-side switch which are used as a coil driving circuit of the high-voltage relay on a current electric vehicle controller. The advantages of good isolation effect, long service life and high transmission efficiency of the optical coupler and strong load capacity of the power relay are fully utilized, and a driving circuit form of a high-side switch and a low-side switch can be combined to seamlessly replace a special high-side switch and low-side switch integrated chip. The problems of heating loss and voltage drop on an existing high-voltage relay coil driving circuit are thoroughly solved, the working stability and reliability of the high-voltage relay coil driving circuit are enhanced, and the coil driving circuit has high practical value.
本发明涉及电动汽车电控技术领域,公开了一种用于电动汽车上高压继电器的线圈驱动电路,针对目前电动汽车控制器上采用高边开关和低边开关作为高压继电器的线圈驱动电路所存在的缺陷,充分利用了光耦隔离效果好、使用寿命长、传输效率高以及功率继电器带负载能力强的优点,并且能够组合成高边开关和低边开关的驱动电路形式,无缝替代专用的高边开关和低边开关集成芯片,彻底解决了现有的高压继电器线圈驱动电路上的发热损耗和电压降落问题,增强了高压继电器线圈驱动电路的工作稳定性和可靠性,具有较高的实用价值。
Coil driving circuit for high-voltage relay on electric vehicle
一种用于电动汽车上高压继电器的线圈驱动电路
2021-08-13
Patent
Electronic Resource
Chinese
IPC: | B60L PROPULSION OF ELECTRICALLY-PROPELLED VEHICLES , Antrieb von elektrisch angetriebenen Fahrzeugen |
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