This application relates to an end cover assembly, a battery cell, a degassing method, a battery, and an electric apparatus. The end cover assembly includes: an end cover plate provided with a degassing hole, where the degassing hole penetrates through the end cover plate; and a degassing apparatus mounted in the degassing hole, where the degassing apparatus includes a columnar portion, a first limiting portion, a second limiting portion, a first elastic member, and a second elastic member. The columnar portion penetrates through the degassing hole. The first limiting portion and the second limiting portion are respectively located on an outer side and an inner side of the end cover plate. The first elastic member is located between the first limiting portion and the end cover plate. The second elastic member is located between the second limiting portion and the end cover plate.

A battery device includes a cell assembly having a plurality of battery cells, and a frame member having a bottom member, a cover member, and a side member connecting the bottom member and the cover member to form as accommodating space for accommodating at least one cell assembly therein. The frame member comprises a flow space therein so that the pas or flames generated in the cell assembly flow, the flow space comprises a first flow space formed in any one of the cover member and the bottom member and a second flow space formed in the side member, and the first flow space and the second flow space are connected to each other.

A battery device includes a cell assembly having a plurality of battery cells, and a frame member having a bottom member, a cover member, and a side member connecting the bottom member and the cover member to form as accommodating space for accommodating at least one cell assembly therein. The frame member comprises a flow space therein so that the pas or flames generated in the cell assembly flow, the flow space comprises a first flow space formed in any one of the cover member and the bottom member and a second flow space formed in the side member, and the first flow space and the second flow space are connected to each other.

A battery device includes a cell stack in which a plurality of battery cells are stacked, a first plate having a gas inlet and having a first surface on which the cell stack is disposed, at least one cooling flow path disposed on a second surface of the first plate, and at least one venting flow path disposed on the second surface of the first plate and formed in a space between the cooling flow paths to be connected to the gas inlet.

A battery system for an electric vehicle includes one or more battery modules that include one or more battery cells. Each of the battery cells include a plurality of vents on a first end and oriented in a first direction (e.g., an upward direction). The battery system also includes a touch cover arranged above the first end of the battery cells, wherein the touch cover includes a plurality of opening features configured to direct the gas to flow away from the plurality of battery cells, or away from sensitive components, to a predetermined direction that differs from the first direction. The plurality of opening features direct gas in a second direction different from the first direction. The opening features include louvres, arranged in strips or an array, or other suitable venting openings. The touch cover may be formed by pressing a sheet of material.

A battery system for an electric vehicle includes one or more battery modules that include one or more battery cells. Each of the battery cells include a plurality of vents on a first end and oriented in a first direction (e.g., an upward direction). The battery system also includes a touch cover arranged above the first end of the battery cells, wherein the touch cover includes a plurality of opening features configured to direct the gas to flow away from the plurality of battery cells, or away from sensitive components, to a predetermined direction that differs from the first direction. The plurality of opening features direct gas in a second direction different from the first direction. The opening features include louvres, arranged in strips or an array, or other suitable venting openings. The touch cover may be formed by pressing a sheet of material.

A battery module includes a cell stack including a plurality of battery cells that are electrically connected to one another; a module housing accommodating the cell stack therein and including a pair of module holes formed in one surface; and a pair of venting hole terminals each including terminal hole communicating with the module hole, and electrically connected to the cell stack.

The application provides a battery cell, a manufacturing method and a manufacturing system therefor, a battery and an electric device. The battery cell in one embodiment of the application includes a casing having an opening and provided with a pressure relief mechanism which is actuated to relieve an internal pressure or temperature of the battery cell when the internal pressure or temperature reaches a threshold value; an electrode assembly accommodated in the casing, and including a body portion and a tab portion protruding therefrom; and a cover assembly for covering the opening. A first recessed portion is formed on one side, abutting against the body portion and facing the electrode assembly, of the cover assembly. The cover assembly is provided with at least one first channel. The first channel can reduce the gas accumulated between the electrode assembly and the cover assembly, thereby reducing the safety risk.

Discussed is a battery pack including a plurality of battery modules; a venting inducing frame disposed along edges of the plurality of battery modules and forming a venting passage to vent at least one of gas and flame; a venting gate to connect an inside of at least one of the plurality of battery modules and the venting inducing frame; and a quenching member disposed in a passage of the venting gate.

A cell module includes a plurality of battery cells each having a safety valve at a first end in a height direction, a first current collector plate including a main body having a through hole that at least partly overlaps the safety valve when viewed along the height direction and a lead extending into the through hole from the main body and being electrically connected to a first terminal of each of the battery cells, an exhaust duct disposed over a surface of the first current collector plate remote from the battery cells, and an insulating film being made of an insulating material and covering an area of the first current collector plate facing the exhaust duct. The safety valve opens when an internal pressure of any of the battery cells reaches or exceeds a predetermined level.