BQ24630: Charge 8S 24V LiFePO4 pack

Gunther Van den Bosch

Part Number: BQ24630
Other Parts Discussed in Thread: BQ24620, , BQ76930

Hi,

I'm looking into a solution to charge an 8S LiFePO4 battery pack. I came across the BQ24620 and BQ24630 components but they only support up to 7 cells in series. I could not find any other component to be used for 8S LiFePO4. Is there another one which I couldn't find?

Thanks,

Gunther

over 4 years ago

0 Jeff F over 4 years ago

TI__Guru**** 150885 points

Hi Gunther,

Unfortunately, TI does not currently have a single chip solution for 8S LiFePO4 charging. You might try searching TI's reference designs at https://www.ti.com/reference-designs/index.html.

Regards,

Jeff

0 Jing Zou over 4 years ago

TI__Mastermind 20200 points

Hi Gunther,

Would you mind sharing more details on the charging requirement? Thanks.

Charge current:
Power path required?
Any other charger specific requirement?
What is the application?

0 Gunther Van den Bosch over 4 years ago in reply to Jing Zou

Prodigy 50 points

Hi Jing,

It concerns an 8S LiFePO4 20Ah battery pack which is used in an autonomous (private property) vehicle equipped with 24V BLDC motors. The BMS in front of this would be based on BQ76930 to balance the cells, protect for charge and discharge.
The charge current would be around 10A. The DC power (30V) would be supplied through a connection with a base station. All BMS and charging operations would have to be monitored and managed by the central microcontroller.
I hope this clarifies the context.

Thanks & regards,
Gunther

Power management

Power management forum

BQ24630: Charge 8S 24V LiFePO4 pack