The invention discloses a power battery overcurrent protection method. The method comprises the steps that a battery manager receives a real-time current value, sent by a current sensor, of a power battery high-voltage loop; the battery manager compares the real-time current value with a preset first current threshold value and a preset second current threshold value, when the real-time current value is larger than the first current threshold value and smaller than the second current threshold value, the battery manager carries out timing, and when the timing reaches the preset time thresholdvalue, the battery manager controls the high-voltage relay to cut off the power battery high-voltage loop. The invention also discloses the battery manager and a power battery over-current protectionsystem. According to the invention, long-time current overload of a high-voltage load and a high-voltage relay can be avoided, and overcurrent protection of the high-voltage loop is realized.
本发明公开了一种动力电池过流保护方法,包括:电池管理器接收电流传感器所发送的动力电池高压回路的实时电流值;电池管理器将所述实时电流值与预设的第一电流阈值及第二电流阈值进行比对,当实时电流值大于第一电流阈值且小于第二电流阈值时,电池管理器进行计时并当计时达到预设的时间阈值时,电池管理器控制高压继电器切断动力电池高压回路。本发明还公开了一种电池管理器及一种动力电池过流保护系统。采用本发明,可避免高压负载和高压继电器长时间电流过载,实现了对高压回路的过流保护。
Power battery overcurrent protection method and system and battery manager
动力电池过流保护方法、系统及电池管理器
2021-02-09
Patent
Electronic Resource
Chinese
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