Constant voltage source design and cell balancing circuit

[Flip101]

I am looking for a design of constant voltage source that can be incorporated in my BMS system.

The generator will be supplying approx 120V to 140V to 32S 40AH LiFeMnPO4 batteries. Also I wanted to ask if anybody has any experience with the ISL78600 balancing system and would I beable to use this to balance the cells? Any advice/information you can provide me with is greatly appreciated

thanks,
Flip

 

[parabellum]

I am looking for a design of constant voltage source that can be incorporated in my BMS system.

The generator will be supplying approx 120V to 140V to 32S 40AH LiFeMnPO4 batteries. Also I wanted to ask if anybody has any experience with the ISL78600 balancing system and would I beable to use this to balance the cells? Any advice/information you can provide me with is greatly appreciated

thanks,
Flip

I believe you need it for charging right? If so, you will need CV/CC source. (constant voltage/constant current) Why not just name it charger?

 

[BatteryMooch]

Also I wanted to ask if anybody has any experience with the ISL78600 balancing system and would I beable to use this to balance the cells? Any advice/information you can provide me with is greatly appreciated

thanks,
Flip

While I'm sure they'd work great for your application, the ISL78600 is almost impossible to buy. I would recommend the Linear Technologies LTC6802/LTC6803 chips or the Texas Instruments bq78PL116/bq78PL102 or bq76PL536 chips. Those you can buy. You'll also be able to get better support here for any questions you might have since these chips are being used by ES forum members.

 

[Flip101]

Hey,

I reviewed the LTC6802/LTC6803 chips and the Texas Instruments bq78PL116/bq78PL102 or bq76PL536 chips. These chips perform passive balancing. Does anybody know of any chips that perfom active balancing?

Thanks,
Flip

 

[BatteryMooch]

I responded to your other post but will do here too...the bq78PL116/bq76PL102 chip set does active balancing.