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BQ27Z561-R2: 在精度测试时,低温环境下,RSOC从41%跳变到0

Part Number: BQ27Z561-R2
Other Parts Discussed in Thread: GPCRB

FAE, 你好!

1. 常温0.2C放电RSOC正常到0,放电终止电压设置为3400mV:

2. 在低温环境下,RSOC跳变41到0,请问下,需要怎么修改参数来修正?

附GG file

JKVR0422.gg.csv

LOG原始数据

LOG.rar

  • 您好,建议用GPCRB完善低温补偿参数。

    www.ti.com/.../GPCRB

  • 应该GG里面的参数设置有问题,现在设置的放电截止电压是3.4V,但现在测试结果放电到3.591V RSOC就跳变到0%了,请帮我确认下,谢谢!

  • 您好,请确认FD的RSOC Threshold的相关参数。

  • 您好,请帮忙解释下,需要怎么设置才能解决这个RSOC 41% 到0跳变的问题?

    当前的设置如下,需达成目标放电3.4V RSOC到0,电池满充电压是4.480V:

    "Gas Gauging","FD","Set Voltage Threshold","3400","mV"
    "Gas Gauging","FD","Clear Voltage Threshold","3500","mV"
    "Gas Gauging","FD","Set % RSOC Threshold","0","%"
    "Gas Gauging","FD","Clear % RSOC Threshold","5","%"
    "Gas Gauging","FC","Set Voltage Threshold","4430","mV"
    "Gas Gauging","FC","Clear Voltage Threshold","4400","mV"
    "Gas Gauging","FC","Set % RSOC Threshold","100","%"
    "Gas Gauging","FC","Clear % RSOC Threshold","99","%"
    "Gas Gauging","TD","Set Voltage Threshold","3500","mV"
    "Gas Gauging","TD","Clear Voltage Threshold","3550","mV"
    "Gas Gauging","TD","Set % RSOC Threshold","6","%"
    "Gas Gauging","TD","Clear % RSOC Threshold","8","%"
    "Gas Gauging","TC","Set Voltage Threshold","4420","mV"
    "Gas Gauging","TC","Clear Voltage Threshold","4390","mV"
    "Gas Gauging","TC","Set % RSOC Threshold","100","%"
    "Gas Gauging","TC","Clear % RSOC Threshold","99","%"

  • 您好,请帮忙解释下,需要怎么设置才能解决这个RSOC 41% 到0跳变的问题?

    当前的设置如下,需达成目标,放电3.4V RSOC到0,电池满充电压是4.480V:

  • 您好,

    The terminate voltage is set at 3400mV. Capacity reduces at lower temperatures.

    Term voltage, Load mode and load select  need to be selected carefully to match the application.

    相关参数需要您自己设置。