Equalizing Charging of Lithium Battery Pack on Change of Mode

Aimming at the problem of short life and lack of stability for vehicle's Li-ion battery pack,this paper puts an equalization charging method of lithium battery on change of mode forward.The method combines a intelligence charging mode with the second equalization technology.It adopts a method of dissipation balance in first equalization design,the excess energy consumed in the resistance in the form of heat.In the second equalization design adopts energy transfer method,which divert the excess energy by capacitance to the battery of lower energy.The experiments show that the voltage of battery got a good consistency in this equalization method.