Author Topic: BMS cell multiplexer  (Read 365 times)

0 Members and 1 Guest are viewing this topic.

Offline chota.sanjiv

  • Contributor
  • Posts: 22
  • Country: in
BMS cell multiplexer
« on: January 05, 2019, 01:22:40 am »
Hi Guy,

I am trying to create a mosfet based multiplexer controlled via opto-isolated MCU control, the object is to connect any li-ion Cell out of a series pack to a CC load whenever required. I got it working by using diodes to stop the reverse current (as +tive of one cell becomes -tive of the other) but I want to eliminate the use of diode and used mosfet based circuit only (can load more current and also less voltage drop).

I would appreciate any suggestions.





 

Online Kleinstein

  • Super Contributor
  • ***
  • Posts: 5795
  • Country: de
Re: BMS cell multiplexer
« Reply #1 on: January 05, 2019, 01:42:45 am »
Maybe photo-fets could work.  This are opto-couplers with a FET  output part.
 

Offline chota.sanjiv

  • Contributor
  • Posts: 22
  • Country: in
Re: BMS cell multiplexer
« Reply #2 on: January 07, 2019, 06:29:14 am »
they might, but looking for a cheap soln which can handle 10A of current per cell.
 

Offline jonroger

  • Contributor
  • Posts: 40
  • Country: us
Re: BMS cell multiplexer
« Reply #3 on: February 25, 2019, 11:38:55 am »
The EMB1428Q provides all the gate drivers you need for mosfets to connect any one of a series string of batteries to a single connection.
 


Share me

Digg  Facebook  SlashDot  Delicious  Technorati  Twitter  Google  Yahoo
Smf