High-voltage interlocking fault detection method and device and automobile
High-voltage interlocking fault detection method and device and automobile
- New search for: LI WEI
- New search for: LIU CHAO
- New search for: LIANG HAIQIANG
- New search for: LI WEI
- New search for: LIU CHAO
- New search for: LIANG HAIQIANG
The invention discloses a high-voltage interlocking fault detection method and device and an automobile. The method comprises the steps of acquiring a first voltage signal through a first port of a high-voltage interlocking fault detection circuit, and acquiring a second voltage signal through a second port; filtering the first voltage signal to obtain a first filtering signal, and filtering the second voltage signal to obtain a second filtering signal; calculating a first fluctuation parameter according to the first filtering signal, and calculating a second fluctuation parameter according tothe second filtering signal; determining a first fault judgment threshold value according to the first fluctuation parameter, and determining a second fault judgment threshold value according to thesecond fluctuation parameter; performing high-voltage interlocking fault detection and judgment on the first port according to the first fault judgment threshold, and performing high-voltage interlocking fault detection and judgment on the second port according to the second fault judgment threshold; and if the first port has the high-voltage interlocking fault and/or the second port has the high-voltage interlocking fault, judging that the vehicle has a high-voltage interlocking fault. According to the invention, the problem of fault false alarm caused by electromagnetic interference is solved.
本发明公开了一种高压互锁故障检测方法、装置及汽车，方法包括通过高压互锁故障检测电路的第一端口获取第一电压信号，通过第二端口获取第二电压信号；将第一电压信号滤波得到第一滤波信号，将第二电压信号滤波得到第二滤波信号；根据第一滤波信号计算第一波动参数，根据第二滤波信号计算第二波动参数；根据第一波动参数确定第一故障判断阈值，根据第二波动参数确定第二故障判断阈值；根据第一故障判断阈值对第一端口进行高压互锁故障检测判断，根据第二故障判断阈值对第二端口进行高压互锁故障检测判断；若第一端口发生高压互锁故障和/或第二端口发生高压互锁故障，判断车辆发生高压互锁故障。本发明解决了电磁干扰所导致的故障误报问题。
Document information
High-voltage interlocking fault detection method and device and automobile
一种高压互锁故障检测方法、装置及汽车
2020-12-04
Patent
Electronic Resource
Chinese
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