I helped design the controller IC that NSC was building to go into Sony's packs, I don't know if they ever released it. They control two series connected FETs acting as switches. They open the switches if any of these events happen:can some1 there tell me about the protection circuit of Li ION battery? are they just use switch? tqvm.
Every one I have ever seen is solid state devices, never a relay. Motorola sells an IC that does it, might be in their catalog. The actual functions are pretty complex: they have to have a clock and enough logic smarts to time a current overload for a certain number of clock cycles, then open the FETs for a while and then "retry" intermittently after a time out period. These protection circuits are not trivial.ooo i c, then normally they use transistor or relay to be the actuator in the protection circuit.
any other protection circuit thats industry use?
okey... actually i want to get some ideas for Li Ion protection circuit. i want to model it by using MATLAB. i've idea to use PLC, what ur opinion? with all the sensor ,PLC as the controller and actuator. is it practical? tqvm to all support.