Whats the best cell balancing/gas gauge solution for a 4 Cell, 10Ah Lipo Battery?

Tien Haeng Sky Ng

Other Parts Discussed in Thread: BQ40Z50, BQ3060, BQ20Z70, BQ29330

Currently trying to find a solution for fast balancing / gas gauge / protection for a 4 cells 16.8V 10Ah Lipo Battery, peak drawn current for the battery is about 200A and charging is around 10A. Communication with MCU via I2C if possible.

Thanks

over 11 years ago

0 Doug Williams4811 over 11 years ago

TI__Expert 6470 points

bq3060 or bq40z50. bq3060 is a bit easier to understand and configure, whereas bq40z50 is more accurate.

0 Tien Haeng Sky Ng over 11 years ago in reply to Doug Williams4811

Prodigy 20 points

Hi, I have designed a lipo protection circuit based on SLUU242B bq20z70EVM-001 (bq20z70/bq29330) and SLUA420A for fast lipo balancing, but have realised that the DSG, CHG FET probably wont be able to handle 200A draw.Is there anyway around this? I also have no idea if SLUA420A will be fast enough (handle enough current) to balance a 10Ah lipo pack.

If not I might have to re-design the lipo balance circuit based on your suggestions.

Thanks again.

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Whats the best cell balancing/gas gauge solution for a 4 Cell, 10Ah Lipo Battery?