| CPC H01M 50/333 (2021.01) | 11 Claims |
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1. A battery cell comprising:
an electrode assembly;
a battery case accommodating the electrode assembly and an electrolyte; and
a gas discharging portion disposed between the electrode assembly and the battery case, and opening and closing a flow path based on pressure within the battery case,
wherein the battery case is a flexible pouch type, and has a sealing portion formed by sealing at least a portion of edges of the battery case,
wherein the gas discharging portion includes:
a body portion fixedly coupled to and positioned in the sealing portion;
a moving member being moved in the flow path;
a plurality of elastic members respectively elastically supporting the moving member; and
a plurality of support members respectively disposed between the moving member and the elastic member, not closing the flow path and in point contact with the moving member to prevent a contact point between the moving member and the support member from being lifted,
wherein the body portion has a rectangular parallelepiped shape, and has wide surfaces of the rectangular parallelepiped respectively bonded to the sealing portions,
wherein the moving member, the plurality of elastic members, and the plurality of support members are disposed in the rectangular parallelepiped space of the body portion,
wherein the body portion has a shape in which a length in a first direction is longer than a length in a second direction,
wherein the first direction is a length direction of the sealing portion,
wherein the second direction is a thickness direction of the sealing portion,
wherein the moving member has one surface in contact with the plurality of support members and having an elliptical shape, and
wherein the plurality of support members are distributed in a plurality of directions with respect to the one surface of the moving member to support the moving member in balance.
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