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关于bq25890充电问题请求帮助

Other Parts Discussed in Thread: BQ25890

各位大神您们好!

目前有板子用的bq25890充电芯片给3节18650电芯并联的电池(总容量10200mAh)充电,使用电压可调快充适配器12V充电的恒流阶段时,适配器电压电流监测器显示输出电流在0.04A~0.8A跳动情况(此时电池电压为3.5V左右),该问题比较容易复现,跳动时间持续数分钟到十几分钟不等,请问该现象是否正常?是什么情况会导致出现这个情况?

第二个问题偶发性出现充电一段时间之后出现不充电情况(电池电压远低于4.2V),充电状态为 0 (Not Charging), 充电电流为0,拔插数次之后可恢复正常充电,可充满

正常快充时寄存器参数如下:

line_num 0:
0x7f 0x6 0x5d 0x1a 0x33 0x13 0x7e    //REG00~REG06
0x89 0x3 0x44 0xbf 0x97 0x0 0x53      //REG07~REG0D
0x3e 0x3f 0x52 0xdb 0x27 0x7f 0x5d  //REG0E~REG14
read vol:0xdd8 0x1068 0xbb8 0xc
mode:0x4 status:0x2 V:0xdd8 V_p:0x2e ele 0x79e otg:0x0 usb:0x1 fast_id:0x0

mode: 适配器模式   status: 充电状态   V: 充电电压(mV)   V_p: 电压百分比  ele 充电电流(mA)  otg: otg 标志  usb: USB_Id 输入电平  fast_id: 快充引脚输入电平 

后来不知为何电流骤减,如下:

line_num 0:
0x7f 0x6 0x5d 0x1a 0x33 0x13 0x7e
0x89 0x3 0x44 0xbf 0x97 0x0 0x53
0x3e 0x4e 0x52 0xdf 0x3 0x7f 0x5d
read vol:0xdd8 0x1068 0xbb8 0xc
mode:0x4 status:0x2 V:0xdd8 V_p:0x2e ele 0x96 otg:0x0 usb:0x1 fast_id:0x0

快充阶段停止充电的前一秒寄存器如下

0x7f 0x6 0x5d 0x1a 0x33 0x13 0x7e    //REG00~REG06
0x89 0x3 0x44 0xbf 0x96 0x0 0x53      //REG07~REG0D
0x3e 0x4e 0x52 0xe0 0x2 0x3f 0x5d   //REG0E~REG14
read vol:0xdd8 0x1068 0xbb8 0xc
mode:0x4 status:0x2 V:0xdd8 V_p:0x2e ele 0x64 otg:0x0 usb:0x1 fast_id:0x0     //每秒刷新打印寄存器一次,

停止充电时如下:

line_num 0:
0x3f 0x5d 0x0 0x0 0x0 0x0 0x0
0x0 0x0 0x0 0x0 0x0 0x0 0x0
0x0 0x0 0x0 0x0 0x0 0x0 0x0
read vol:0x900 0x1068 0xbb8 0xc
mode:0x4 status:0x0 V:0xdd8 V_p:0x0 ele 0x64 otg:0x0 usb:0x1 fast_id:0x0     //每秒刷新打印寄存器一次,

line_num 0:
0x7f 0x6 0x5d 0x89 0x33 0x13 0x7e
0x89 0x3 0x44 0xbf 0x87 0x0 0x53
0x37 0x3f 0x52 0xdf 0x0 0x3f 0x5d
read vol:0xd4c 0x1068 0xbb8 0xc
mode:0x4 status:0x0 V:0xd4c V_p:0x22 ele 0x0 otg:0x0 usb:0x1 fast_id:0x0     //后续一直停止充电,status:0x0即为Not Charge ,寄存器的值也保持这些参数。

最主要需要解决的问题是电池还没满电就不充电。

希望各位大神能够协助解决!

小弟感激不尽。