前提:我自己使用的板卡已验证可以成功和BQ40Z80进行通信
问题:我这边板卡跟某块电池突然无法正常通信,改电池使用EV2300跟电脑软件通信却可以读出数据,并且我的板卡跟其他电池的通信是正常的,请问这个可能是什么原因导致的?
感谢。
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您好,电池能使用EV2300通讯,说明芯片是正常的,板卡不能和BQ40z80正常通讯,建议您检查您的程序。
官网有提供BQ40Z80 量产校准代码示例,希望对您有帮助。
您好,OCVFR不会导致通讯异常。
[OCVFR]: An OCV reading is taken when a dV/dt condition is met. This is not the case if charging stops within the flat voltage region. By default, this flag is set. The BQ40Z80 device will take a 48-hour wait before taking an OCV reading if charge stops below the FlatVoltMax. A discharge will not cancel this 48-hour wait. The 48-hour wait will only be cleared if charging stops above the FlatVoltMax level. Setting this flag to 0 removes the 48-hour wait requirement, and OCV is taken when the dV/dt condition is met. Removing the 48-hour requirement can be useful sometimes to reduce test time during evaluation.