• 状态
  • 已锁定 已锁定
  • 回复 2 回复
  • 订户 55 订户
  • 视图 899 视图
  • 用户 0 会员在此处
选项
选项
相关

This thread has been locked.

If you have a related question, please click the "Ask a related question" button in the top right corner. The newly created question will be automatically linked to this question.

TI BQ76930的AFE 7个Cell connection问题

Matt Tsai
Intellectual 410 points
Other Parts Discussed in Thread: BQ76930

我是用TI BQ76930的AFE
如果是10个cell的设定, 相邻的cell 不能同时做Cell Balance
如CELL3和CELL4不能同时做Cell Balance

Cell Connections for bq76930 (10 cells)
CELL 1
CELL 2
CELL 3
CELL 4
CELL 5
CELL 6
CELL 7
CELL 8
CELL 9
CELL 10

但如果是7个cell 的connection, CELL3和CELL4之间有一个short
请问一下这时候的CELL3和CELL4算是相邻吗? 我可以对CELL3, CELL4做cell balance吗?

Cell Connections for bq76930 (7 Cells)
CELL 1
CELL 2
CELL 3
short
CELL 4
CELL 5
CELL 6
short
short
CELL 7


Thanks

  • 0
    TI__Prodigy 200 points

    Matt，

    算是相邻，还是不建议同时做CB。不建议相邻CELL同时CB，主要是从器件引脚绝对耐压和差分耐压考虑。可以参考下面文档的9.5章节

    www.ti.com/.../sluub41.pdf

  • 0 回复 Hollis Liu
    Intellectual 410 points

    If cells 4 and 5 are balanced, the VC3 input pulls to VC4, which is approximately the cell 4 voltage or 16 V.
    ==>请问一下这时候VC3，VC4，VC5的电压值各为何？ VC3，VC4，VC5这时是等电压吗？

    However, if cell 1 and cell 2 are balanced, VC0 pulls to the cell 1 value of 4 V. Because this is above the absolute maximum of 3.6 V
    ==>是指VSS-VC0不能超过3.6V，如果每个cell是4V的情况下，是不是只要cell1做电池平衡时，VSS-VC0就会超过3.6V？


    Datasheet中的6.1 Absolute Maximum Ratings及6.3 Recommended Operating Conditions
    提到的电压值有什么不同，关于VSS-VC0，一个是3.6V，一个是写10V
    VSS-VC0的绝对最大额定值是3.6V
    (VC0–VSS): 10V

    这部分不是很了解
    不知道是否可以帮忙解惑一下


    Thanks