Recommended fuel gauges for drone battery packs

qwqwqw2088

Recommended fuel gauges for drone battery packs [Copy link]

A: Regarding the fuel gauge IC used in drone battery packs, 7S1P lithium-ion battery packs, discharge 10A, maximum 30A, is there any suitable IC recommended?

Q: I recommend you to take a look at BQ40Z80

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A: After checking the BQ40Z80 specification, I think the question is: the battery pack can be removed from the drone. If you want to use the PRE-DSG function, then pin 17 needs to be used to drive the MOS of PRE-DSG, and SYSPRES will not be available. In this case, can the drone be awakened when the battery pack is inserted into the drone? Or how do you know if it is connected to the system?

bq40z80 2-7 节锂离子电池组管理器.pdf (4.4 MB, downloads: 13)

2020-5-26 07:42 上传

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Q: The data sheet states that pins 16, 17, or 20 can control PDSG.
The bq40z80 device can be configured to use the PDSG output of Pins 16, 17, or 20 to drive the N-CH FET Q7 to turn on the pre-discharge P-CH FET Q5.