一种BMS诊断继电器粘连设计

Adhesion Design of BMS Diagnosis Relay

继电器是控制电动汽车高压电源通断的核心部件,需要保证继电器的正常工作,才能保证整车的安全运行。实际使用过程中因控制时序不合理、铜排线束接触不良、继电器本身质量不过关等问题,导致继电器易出现粘连现象,直接导致整车高压电源不受控,对整车的安全使用产生极大危害。继电器的状态受BMS(电池管理系统)控制,因此BMS对继电器的控制和诊断显得尤为重要。

Relay is the core part of controlling the high-voltage power on and off of electric vehicle, It is necessary to ensure the normal operation of the Relay to ensure the safe operation of the whole vehicle. In the actual use process, due to the unreasonable control sequence, poor contact of copper wire harness, and poor quality of relay itself, the Relay is prone to adhesion, which directly leads to the uncontrolled high-voltage power supply of the whole vehicle, causing great harm to the safe use of the whole vehicle. The state of relay is controlled by BMS, so it is very important for BMS to control and diagnose relay.