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Electronics => Beginners => Topic started by: chota.sanjiv on January 05, 2019, 01:22:40 am

Title: BMS cell multiplexer
Post by: chota.sanjiv 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.





Title: Re: BMS cell multiplexer
Post by: Kleinstein on January 05, 2019, 01:42:45 am
Maybe photo-fets could work.  This are opto-couplers with a FET  output part.
Title: Re: BMS cell multiplexer
Post by: chota.sanjiv on January 07, 2019, 06:29:14 am
they might, but looking for a cheap soln which can handle 10A of current per cell.
Title: Re: BMS cell multiplexer
Post by: jonroger 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.