bqstudio 操作bq27421EVM-G1B相关问题

ma gang

Other Parts Discussed in Thread: EV2400, BQSTUDIO

第一次使用TI的电量计芯片使用了 bq27421 evm板以及 ev2400 ，基本流程和概念不太熟悉。目前有以下几个疑问请教TI的工程师：

1.修改配置Data Memory下的Design Capacity 、Design Energy、Taper Rate 为我们自己电池的信息。使用Golden Image选项生成.gmFS文件。Programming之后，掉电重启，Data Memory下的信息恢复修改之前的值，操作哪里有问题？

2.电池曲线学习的流程是什么?是否通过EVM板上的 charger+、charger-接充电、或电子负载进行充放电操作？点击start 学习的时候，显示

BAT_DET bit 没有使能，查看config寄存器BIE是高

怎样让它学习。

3.如果正常写入配置以及学习曲线参数等信息到bq27241的 ROM， bq27421电量计合入我们的电路板，inux系统的电量计驱动bq27xxx_battery.c 和bq27xxx_battery_i2c.c 是否不需要任何修改即可正确读取电池的电量信息？

5 年多前

0 Star Xu 5 年多前

TI__Guru*** 130456 points

您好

1，请确认GMFS生产正确，请参考下面链接的步骤。

e2e.ti.com/.../566875

2，BAT_DET 请参考TRM Table 4-2. Control() Subcommands

学习流程如下：

To perform a learning cycle, after configuring the e Design Capacity, Design Energy, Terminate Voltage, and Taper Rate,

charge the cells to full, rest for 2 hours, discharge to empty using c/7 rate, rest 5 hourss, charge to full, rest 2 hours and dishcarge to empty and rest 5 hours.

If qmax_up and res_up flags gets set, then learning was successful and the pack can be used

3，BQ27XXX_BATTERY.C文件没有用过，建议您实际读一下，看是否需要修改。

To perform a learning cycle, after configuring the e Design Capacity, Design Energy, Terminate Voltage, and Taper Rate,

charge the cells to full, rest for 2 hours, discharge to empty using c/7 rate, rest 5 hourss, charge to full, rest 2 hours and dishcarge to empty and rest 5 hours.

If qmax_up and res_up flags gets set, then learning was successful and the pack can be used

0 ma gang 5 年多前回复 Star Xu

Intellectual 280 points

静止六小时之后，下一个阶段是充电。结果出现
Fri Jan 15 15:00:29 CST 2021: Learning cycle cancelled
Fri Jan 15 15:00:35 CST 2021: Error: [RUP_DIS / RDIS: Not Clear]
Fri Jan 15 15:00:35 CST 2021: Learning cycle cancelled
Fri Jan 15 15:00:40 CST 2021: Error: [RUP_DIS / RDIS: Not Clear]
如果调节这个时间，因为已经静置过了。

0 ma gang 5 年多前回复 ma gang

Intellectual 280 points

找到了答复。。

Do you actually have a load connected to the cells for the discharge to occur. I would recommend not using the learning cycle plug in, but rather, simply complete the discharge and charge independent of the plug in.

Before starting the learning cycle, set the update status to 3. Update status will go from 3 to 2 to 1 during learning. See the trm for quick start guide for additional details.

thanks

Onyx