The invention discloses an insulation safety protection device and an electric vehicle with the same. The insulation safety protection device comprises a high-voltage relay which is arranged between a high-voltage power supply and a high-voltage branch outside the protection device; a voltage doubling circuit which is used for amplifying low voltage provided by the interior of the protection device to high voltage required by insulation detection; an insulation detector which is used for carrying out insulation detection on a connecting line of the voltage doubling circuit and the high-voltage relay; a CPU circuit which is used for controlling the on-off of the high-voltage relay according to the detection data of the insulation detector; and a power supply module which is used for providing a working power supply for the voltage doubling circuit, the insulation detector and the CPU circuit. According to the invention, low voltage is amplified to high voltage required by insulation detection through the internal voltage doubling circuit without depending on a high-voltage bus of the whole vehicle; high-voltage insulation characteristic detection has preposition, high-voltage output can be switched off in advance once poor insulation is found, and the safety is ensured.
本发明公开了一种绝缘安全防护装置及具有其的电动车,所述绝缘安全防护装置包括高压继电器,其设置在防护装置外部的高压电源与高压支路之间;倍压电路,用于将防护装置内部提供的低压放大至绝缘检测要求的高压;绝缘检测仪,用于对所述倍压电路与高压继电器的连接线路作绝缘检测;CPU电路,用于根据绝缘检测仪的检测数据控制所述高压继电器的通断;电源模块,用于向所述倍压电路、绝缘检测仪、CPU电路提供工作电源。本发明通过内部倍压电路将低压放大至绝缘检测要求的高压,而不依赖于整车高压母线;高压绝缘特性检测具有前置性,一旦发现绝缘不良可提前关闭高压输出,确保安全。
Insulation safety protection device and electric vehicle with same
一种绝缘安全防护装置及具有其的电动车
2021-04-27
Patent
Electronic Resource
Chinese
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