Patent ID: 7785731

Claim:
A power disconnection apparatus for an over-charged soft-shell Li ion battery, comprising: a soft-shell Li ion battery comprising an anode pin and a cathode pin, and a soft shell enclosing the soft-shell Li ion battery; and a power disconnection device comprising a panel attaching a surface of the soft shell and a separation unit connected to the panel and corresponding to one of the anode pin and the cathode pin; wherein the soft shell is expanded when the soft-shell Li ion battery is over-charged and the panel is moved away from the soft-shell Li ion battery, whereby the separation unit disconnects power supplied to one of the anode pin and the cathode pin, wherein the anode pin comprises an anode leg and an anode flange connected to one end of the anode leg; and wherein the separation unit comprises a cutting knife and two fixing arms vertically extended from both ends of the cutting knife, the cutting knife and the panel are formed on two opposite sides with respect to the anode leg, the fixing arms are connected to the panel.