Patent ID: 8988046
Filing Date: 2015-03-24
Classification: H01M,H02J,Y02E

Abstract:
1. An electronic device, comprising: a plurality of parallel-connection battery groups; and a plurality of battery balance circuits respectively coupled to the parallel-connection battery groups, wherein when the parallel-connection battery group has a temperature over a predetermined temperature range, the battery balance circuit performs a thermal balance operation on the parallel-connection battery group, so that the temperature of the parallel-connection battery group is back into the predetermined temperature range; wherein each battery balance circuit comprises: a first Zener diode coupled to the parallel-connection battery group, a second Zener diode coupled to the first Zener diode, a first resistor and a silicon controlled rectifier coupled to the first Zener diode, a transistor coupled to the first Zener diode, and a differential amplifier coupled to the transistor for detecting whether the temperature of the parallel-connection battery group is over the predetermined temperature range, wherein