Hello World,

I'm looking for a product similar to Texas Instrument's BQ24610, a development/demo board for charging a battery.

I'm trying to build a battery charger for a Li-ion battery pack by using a Buck Converter and a CC-CV charger.
I plan to charge it at 80V, 6A.

I'm trying to find an off-shelf CC-CV charger, rated at 80V, 6A but am having difficulty finding one.

Does anyone have recommendations on what to use, or suggestions on how I can go about this?

Cheers,
A Panicked Student

 

20 Cells in series ?
Do you have a 20 Cell BMS ?

Most any Buck Converter Design that can limit Amps and then Regulate Voltage can be modified to work.

 

Hi mvas, and thank you for the reply.

Yes 20 cells in series for an electric scooter.
Currently, its being charged by an off-shelf charger (AC-DC charger) from a variable high voltage DC source (150-380V).

I'm working on a project to downsize this off-shelf charger, as it includes many components not needed.

The key components identified to make this work was a buck converter with a cc-cv charge controller.

We're working on a Buck Converter to meet the high voltage variable input to produce a fixed output roughly at 80V.
However, we still need a CC-CV charge controller. The closest that I've seen that could work was the BQ2461x series, but its input voltage is up to 28V.

http://www.ti.com/lit/ds/symlink/bq24600.pdf

Would this work if I supplied the controller with 28V and had the buck SMPS with 130-380V/80V ?

Appreciate your reply a lot!

 

LT3796