Power and lithium battery power supply automatically switching circuit, urgent request

CodePudding user response:

Lithium battery protection board, so you can direct the solution and the power supply in parallel, straight when power solution for lithium battery charging protection plate, when no power straight solution by lithium battery power supply;
In order to prevent the surge current impact on power supply, the simplest is between power and lithium battery series inductor with a stream.

CodePudding user response:

You didn't give power and battery voltage, it is hard to answer, if the simplest is to use two diode

CodePudding user response:

Buy two diode output terminal connected to the input power, low cost of lithium batteries, safe and reliable

CodePudding user response:

CodePudding user response:

Demand is not clear, problems are not clear

CodePudding user response:

It is good to do a competing for power supply circuit, simple with a MOS tube himself, low voltage power small words have single chip solutions (seamless switching), power anything also have chips and MOS tube solution, can go to adi website looking for battery management related solutions can do this work

CodePudding user response:

Look at the MOS switch circuit

CodePudding user response:

Directly in parallel, such as power has been providing 3 v, when the lithium battery used 3 v, will use the power supply