hi TI team,
我们有个项目,用到了一个磷酸铁锂电池(3串应用,每个电芯3.2V,总电压为9.6V,截止电压为7.5V)
TI的同事建议我们用 BQ40Z50-R2,但是这个芯片需要将每个电芯都接到芯片上,这样就增加了电池pack的出线数量。
我在TI网站上也找了其他的电量计型号,比如bq34z100-G1,只需要接电池pack的正负极即可。
请TI的同事,是否能提供一个芯片型号,只需要接电池pack的正负极,同时性能表现也很好,并且其他客户也应用过磷酸铁锂项目。
对于我们的磷酸铁锂项目,是否有更合适的芯片推荐、
谢谢
jingheng wang:
Hi TI team,
I want to select a battery fuel gauges chip for LiFePO4 (3 Series battery,each cell voltage is 3.2V,so the battery pack voltage is 9.6V,and EOL voltage is 7.5V),
In the TI.COM ,I find the BQ40Z50-R2 which is recommended by TI colleague,there are some question :
1, Has a customer used it in LiFePO4 battery project?
2,How about its performance?
3,BQ40Z50-R2 must connect each cell (For the 3 Series battery,It need 3 lines connect to the BQ40Z50-R2 ), But I find the bq34z100-G1 which just connect the pack- and pack+.
4,Is there a more suitable device for our project? I want connection more simpler(like bq34z100-G1),and Better performance.
thanks
Star Xu:
铁锂电池因为平坦区特别宽,阻抗跟踪算法的性能可能不是很理想的。
您可以考虑用BQ4050, CEDV算法的芯片, BQ34Z100-G1 需要搭AFE使用.