The invention relates to a method and an apparatus for diagnosing an active discharge of a high-voltage intermediate circuit of an electric vehicle. The invention relates to a device for controlling an active discharge of a high-voltage intermediate circuit having an intermediate circuit capacitor, said device comprising: a control unit for controlling the active discharge; a discharge circuit which can be driven by the control unit for actively discharging a high-voltage intermediate circuit of the power electronics module and which has a semiconductor switch and a discharge resistor connected in series with the semiconductor switch; the device further comprises a temperature sensor arranged spatially close to the discharge resistor and/or the semiconductor switch, the control unit being configured to conclude the presence of an active discharge as a function of an abrupt change in temperature detected by the temperature sensor.
本发明涉及用于诊断电动车辆的高压中间电路的主动放电的方法和装置。该高压中间电路具有中间电路电容器,所述装置包括:用于控制主动放电的控制单元;能由控制单元驱动的用于使电力电子模块的高压中间电路主动放电的放电电路,该放电电路具有半导体开关和与半导体开关串联的放电电阻;还包括在空间上靠近放电电阻和/或半导体开关布置的温度传感器,其中,所述控制单元配置为根据由所述温度传感器检测到的温度的突然变化推断出存在主动放电。
Diagnosis of active discharge of high voltage intermediate circuit
高压中间电路的主动放电的诊断
2022-05-17
Patent
Electronic Resource
Chinese
IPC: | B60L PROPULSION OF ELECTRICALLY-PROPELLED VEHICLES , Antrieb von elektrisch angetriebenen Fahrzeugen / H02M APPARATUS FOR CONVERSION BETWEEN AC AND AC, BETWEEN AC AND DC, OR BETWEEN DC AND DC, AND FOR USE WITH MAINS OR SIMILAR POWER SUPPLY SYSTEMS , Anlagen zur Umformung von Wechselstrom in Wechselstrom, von Wechselstrom in Gleichstrom oder umgekehrt, oder von Gleichstrom in Gleichstrom und zur Verwendung in Netzen oder ähnlichen Stromversorgungssystemen |
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