Battery pack

A battery pack, comprising:

• a casing;
• a circuit disposed inside the casing;
• a fuse disposed inside the casing and connected in series to the circuit, wherein an opening corresponding to the fuse is provided on the casing;
• a switch disposed inside the casing, wherein the switch is connected in series with the circuit to control a connection/disconnection of the circuit;
• and
• a cover body disposed corresponding to the opening, wherein the cover body is configured to have a first state in which the switch is switched on to connect the circuit when the cover body is capped at the opening and a second state in which the switch is switched off to disconnect the circuit when the cover body is detached from the opening, wherein,
• the switch comprises a stationary contact, a movable contact capable of contacting the stationary contact under a driving action from the cover body, and a reset member coupled to the movable contact such that the movable contact is moved by a reset deformation of the reset member between a first position in which the movable contact is connected to the stationary contact to switch on the switch and a second position in which the movable contact is separated from the stationary contact to switch off the switch,
• a number of the reset member is two, the two reset members are respectively disposed on two sides of the movable contact, and the two reset members are a first reset member and a second reset member, respectively;
• the movable contact has a first surface and a second surface which are disposed opposite to each other, one end of the first reset member in a reset deformation direction thereof is disposed corresponding to the opening, and the other end is coupled to the first surface, and one end of the second reset member in the reset deformation direction thereof is coupled to the second surface;
• the switch further comprises a control column, which is coupled to one end of the first reset member and disposed corresponding to the opening, and a contact surface of the control column adjacent to the cover body is a smooth surface;
• and
• the switch further comprises a housing including a bottom plate and an upper housing, the stationary contact and the second reset member are fixed to the bottom plate, the movable contact, the first reset member and the control column are sequentially arranged within the upper housing, and a through hole is provided on a side of the upper housing opposite to the bottom plate to enable the control column to be protruded out of the through hole.