BQ27410需要发送电池在位指令,才能完成初始化,但如何检测电池是否插入呢?我的项目是BQ24133(充电电路)+BQ27410(计量),如果充电电路工作,电池接口端始终会有高电平,不受电池插入与否的影响,请问怎么解决?期待各位的出谋划策~
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bq27410电池检测在位有两种方法:(1)[BIE]=0,则主机发送BAT_INSERT命令(0X000C)即可认为电池在位;(2)[BIE]=1,则需要BIN引脚有低电平才能认为电池在位,比如主机驱动BIN引脚电平由高到低,或者BIN引脚连接电阻接地,又或者BIN引脚连接电池的带下拉电阻的引脚(如热敏电阻引脚),即可判断电池接入。