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BQ40Z50-R1: 关于BQ40Z50-R1 cell Balancing Config问题

wang
Prodigy 30 points
Part Number: BQ40Z50-R1


尊敬的TI技术人员：

       我现在设置BQ40Z50-R1电量计cell Balancing Config相关信息如下：

 bal Time/mAh Cell 1: 367s/mAh

 bal Time/mAh Cell 2-4: 514s/mAh

Min start balance Delte: 3mV

Relax balance interval: 18000S

Min Rsoc Fof Balancing: 80%

      对于这个电量计和设置的相关信息还有些疑问，

1、平衡时的电流是不是只有10mA?

2、bal Time/mAh Cell 1: 367s/mAh和bal Time/mAh Cell 2-4: 514s/mAh分别表示什么？是不是开启367S才有1mAh容量？

3、Min start balance Delte: 3mV 是不是要压差大于3mV才开启均衡？

4、Relax balance interval: 18000S 是不是第一次均衡和第二次均衡开启时间要间隔18000S ？

5、Min Rsoc Fof Balancing: 80% 是不是要SOC大于80%才开启均衡？

      以上盼复！非常感谢。

  • 0
    TI__Guru*** 130456 points

    您好

    1，是的

    2，bal Time/mAh Cell 1: 367s/mAh的意思是Balance Time per mAh Cell 1，cell 1 平衡1mah用时367s

    3， Minimum cell voltage delta to start cell balancing during Relax Balance Interval checks. This condition is checked in RELAX mode and so it only applies if cell balancing at rest is enabled.

    4，Relax balance interval：Interval during RELAX mode to check for cell imbalance. This parameter applies to cell balancing at rest only.

    5，Min Rsoc Fof Balancing：Minimum RelativeStateOfCharge() threshold for cell balancing. This condition is checked during relaxation and so it only applies if cell balancing at rest is enabled.

  • 0 回复 Star Xu
    Prodigy 30 points

    很抱歉！

         还是有一些疑问，意思是说我们不外加外部均衡时，IC本身支持10mA电流的均衡？均衡开启的条件就是压差大于3mV？

    对于问题4和5,我想知道在什么情况均衡是动态或者是静止的？

  • +1 回复 wang
    TI__Guru*** 130456 points

    您好，如果不加外部均衡均衡电流应该小于10mA, 详细启动条件请参考TRM 7.2 Cell Balancing Setup

    充电和relax mode会启动平衡。