Patent ID: 8928274
Filing Date: 2015-01-06
Classification: H01M,H02J,Y02E

Abstract:
1. A method for determining a charging state of a battery module, the battery module including first and second terminals, a recognition circuit, including an energy storage element connected to the first terminal and a current limiting element serially connected between the energy storage element and the second terminal, and a thermal sensing circuit disposed in parallel to the recognition circuit, the thermal sensing circuit including a switch connected to the first terminal, and a thermal sensing element serially connected between the switch and the second terminal, the method comprising: turning off the switch to disconnect the thermal sensing element and the first terminal; providing a current flowing through the current limiting element to charge the energy storage element, to thereby form a first terminal voltage at the second terminal; determining a battery type of the battery module in accordance with the first terminal voltage at a first time; turning on the switch to connect the thermal sensing element to the first terminal; providing a current flowing through the thermal sensing element to thereby form a second terminal voltage at the second terminal; and determining a temperature of the battery module in accordance with the second terminal voltage at a second time.