Patent ID: 6819082
Filing Date: 2004-11-16
Classification: H01M,H02J,H04B,H04N,Y02E

Abstract:
A charging device, comprising:a charging assembly including at least two charging assembly contacts; a secondary battery set including at least two battery set contacts; and a thermo-resetting bistable spring member, wherein said at least two charging assembly contacts are arranged to engage said at least two battery set contacts, wherein when said at least two charging assembly contacts and said two battery set contacts are pushed together by an external force, said thermo-resetting bistable spring member is pushed from a first position to a second position, said charging assembly and secondary battery set are electrically connected, and charging current is supplied from said charging assembly to said battery set, wherein at least one battery in said battery set generates heat when charged to saturation, wherein said thermo-resetting member is arranged to reset from said second position to said first position and break said electrical connection in response to heat generated by said battery, thereby cutting-off supply of charging current to said battery set; and wherein said thermo-resetting member pushes said secondary battery set at least part way out of said charging assembly when the thermo-resetting member is reset in response to generation of heat upon saturation of said at least one battery in said secondary battery set.