电动汽车高压连接器互锁电路及故障检测方法  

Interlocking Circuit and Fault Detection Method for High Voltage Connectors of Electric Vehicles

作　　者：李玮 王晶[2] LI Wei;WANG Jing(Beijing Electric Vehicle Co.,Ltd.,Engineering Research Institute,Beijing 100176,China;Langfang Polytechnic Institute,Department of Mechanical and Electrical Engineering,Langfang 065000,China)

机构地区：[1]北京新能源汽车股份有限公司工程研究院,北京100176 [2]廊坊职业技术学院机电工程系,河北廊坊065000

出　　处：《汽车电器》2024年第11期102-104,107,共4页Auto Electric Parts

基　　金：国家重点研发计划项目(2016YFB010060522017);河北省教育厅科学技术研究项目(ZC2023094)。

摘　　要：文章设计一种电动汽车高压连接器互锁状态检测电路,通过两路低压信号实现对高压器件连接状态的有效检测。基于该电路,提出一种高压互锁故障检测方法,设计高压互锁信号波动参数,通过该参数表征电磁干扰对高压互锁信号的影响程度,并利用该参数实现高压互锁故障阈值的自适应调节,以此避免由于车辆环境中非预期电磁干扰而导致高压互锁故障的误报问题。The article designs a high-voltage connector interlock state detection circuit for electric vehicles,which achieves effective detection of the high-voltage device connection state through two low-voltage signals.Based on this circuit,a method for detecting high-voltage interlock faults is proposed.The high-voltage interlock signal fluctuation parameters are designed,which represent the degree of electromagnetic interference on the high-voltage interlock signal.The high-voltage interlock fault threshold is adjusted adaptively based on these parameters to avoid the problem of false reporting of high-voltage interlock faults due to unexpected electromagnetic interference in the vehicle environment.

关 键 词：电动汽车 高压连接器 互锁电路 故障检测 

分 类 号：U469.72[机械工程—车辆工程]