Patent ID: 8202643
Filing Date: 2012-06-19
Classification: B25F,H01M,Y02E,Y02P

Abstract:
1. A portable power source system comprising: a battery pack housing at least one secondary battery and a mounting portion for mounting said battery pack, wherein said mounting portion includes a positive external terminal and a negative external terminal, said battery pack includes an electrically insulative cabinet, said cabinet including a positive external terminal inserting portion for inserting said positive external terminal, and a negative external terminal inserting portion for inserting said negative external terminal, provided inside of said cabinet so as not to be exposed outside said cabinet are a positive internal terminal and a negative internal terminal for connecting to said positive external terminal and said negative external terminal, respectively, further provided inside of said cabinet, are: a movable protective cover facing said positive internal terminal, said negative internal terminal, said positive external terminal inserting portion and said negative external terminal inserting portion; and an elastic member for biasing said protective cover toward said positive internal terminal and said negative internal terminal, two or more operations in different operating directions are required to connect said positive external terminal and said negative external terminal to said positive internal terminal and said negative internal terminal, respectively, said two or more operations comprising: a first operation including inserting said positive external terminal and said negative external terminal into said positive external terminal inserting portion and said negative external terminal inserting portion, respectively, so that said positive external terminal and said negative external terminal abut to said protective cover, thereby causing said protective cover to go against the biasing force of said elastic member and to thus separate from said positive internal terminal and said negative internal terminal; and a second operation including rotation having a rotational axis in the direction of said first operation, said positive external terminal inserting portion has: a first wider width portion into which said positive external terminal is inserted in said first operation; and a first slit portion, formed in the manner of communicating with said first wider width portion, along which said positive external terminal moves in said second operation, said negative external terminal inserting portion has: a second wider width portion into which said negative external terminal is inserted in said first operation; and a second slit portion formed in the manner of communicating with said second wider width portion, along which said negative external terminal moves in said second operation, said positive internal terminal is provided on an end portion of said first slit portion opposite an end portion thereof where said first wider width portion is positioned; and said negative internal terminal is provided on an end portion of said second slit portion opposite an end portion thereof where said second wider width portion is positioned, neither a connection between said positive external terminal and said positive internal terminal nor a connection between said negative external terminal and said negative internal terminal being established by the first operation; and both a connection between said positive external terminal and said positive internal terminal and a connection between said negative external terminal and said negative internal terminal are established by said second operation, and at end positions in said second operation, said positive external terminal and said negative external terminal are pressed to said positive internal terminal and said negative internal terminal, respectively, by the biasing force of said elastic member, via said protective cover.