Patent ID: 7986130

Claim:
A battery module, comprising: a cell; a charge/discharge circuit coupled to the cell; a temperature sensing circuit used for outputting a first analog signal according to a temperature of the cell, wherein the temperature sensing circuit comprises: a positive temperature coefficient (PTC) device used for sensing a temperature of the cell; and a charge/discharge speed controlling circuit used for outputting a control signal to the charge/discharge circuit to adjust a charge/discharge speed of the cell according to the first analog signal, wherein the charge/discharge speed controlling circuit comprises: a sensing module used for converting the first analog signal into a second analog signal, wherein the sensing module comprises; a voltage follower used for receiving the first analog signal and accordingly outputting a third analog signal; an inverse adder used for outputting a fourth analog signal according to the third analog signal and a reference signal; and an inverse amplifier used for inversing and amplifying the fourth analog signal to output the second analog signal; an analog/digital converter used for converting the second analog signal into a digital signal; and a micro-controller used for outputting the control signal according to the digital signal.