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 particle separator includes an inlet and an outlet where solid particle are separable from a particle-battery gas mixture introduced with overpressure at the inlet by the particle separator and where the battery gas is depressurizable at the outlet. The particle separator further includes a gas channel wound in a screw shape in an axial direction which fluidically connects the inlet to the outlet. The gas channel has a particle emission on an outlet-side end of the particle separator which is opened in a radial direction and through which the solid particles are passable.

The embodiments of the present application provide a battery assembly, a battery module and a battery energy storage device. The battery assembly 10 comprises: a heat insulation fixing frame 101, a top isolation plate 102 and at least one cell 103; the heat insulation fixing frame 101 surrounds the at least one cell 103 to fix the position of the at least one cell 103; the cell 103 comprises a cell main body 1031, an electrode 1032 and a cell pressure relief valve 1033, the cell pressure relief valve 1033 being used for releasing flue gas; the top isolation plate 102 is mounted on the top of the heat insulation fixing frame 101 and is attached to the top of the heat insulation fixing frame 101; at least one first flue gas channel 1021 is provided on the top isolation plate 102; the first flue gas channel 1021 is used for discharging flue gas; the position of the first flue gas channel 1021 is opposite to the position of the cell pressure relief valve 1033; and the top isolation plate 102 is provided with at least one first electrode through hole 1022, so that the electrode 1032 is electrically connected through the first electrode through hole 1022. Therefore, the potential safety hazard during thermal runaway of the cell is reduced.

The embodiments of the present application provide a battery assembly, a battery module and a battery energy storage device. The battery assembly 10 comprises: a heat insulation fixing frame 101, a top isolation plate 102 and at least one cell 103; the heat insulation fixing frame 101 surrounds the at least one cell 103 to fix the position of the at least one cell 103; the cell 103 comprises a cell main body 1031, an electrode 1032 and a cell pressure relief valve 1033, the cell pressure relief valve 1033 being used for releasing flue gas; the top isolation plate 102 is mounted on the top of the heat insulation fixing frame 101 and is attached to the top of the heat insulation fixing frame 101; at least one first flue gas channel 1021 is provided on the top isolation plate 102; the first flue gas channel 1021 is used for discharging flue gas; the position of the first flue gas channel 1021 is opposite to the position of the cell pressure relief valve 1033; and the top isolation plate 102 is provided with at least one first electrode through hole 1022, so that the electrode 1032 is electrically connected through the first electrode through hole 1022. Therefore, the potential safety hazard during thermal runaway of the cell is reduced.

The present invention relates to an apparatus and method for manufacturing a secondary battery. The apparatus for manufacturing a secondary battery comprises a fixing part configured to press and fix a cell comprising an electrode assembly, an electrolyte, and a battery case configured to accommodate the electrode assembly and the electrolyte, wherein the cell is fixed so that a gas pocket part is disposed above a main body of the battery case, a piercing part configured to pierce the fixed cell through a knife so as to form a gas discharge hole, a vacuum part through which the cell is maintained in a vacuum state, and an internal gas of the cell is discharged to the outside, a leakage prevention part configured to prevent the electrolyte from leaking by pressing the gas pocket part of the cell, in which the internal gas is discharged through the vacuum part, through a leakage prevention block, and a pre-sealing part configured to seal the gas pocket part.

The present invention relates to an apparatus and method for manufacturing a secondary battery. The apparatus for manufacturing a secondary battery comprises a fixing part configured to press and fix a cell comprising an electrode assembly, an electrolyte, and a battery case configured to accommodate the electrode assembly and the electrolyte, wherein the cell is fixed so that a gas pocket part is disposed above a main body of the battery case, a piercing part configured to pierce the fixed cell through a knife so as to form a gas discharge hole, a vacuum part through which the cell is maintained in a vacuum state, and an internal gas of the cell is discharged to the outside, a leakage prevention part configured to prevent the electrolyte from leaking by pressing the gas pocket part of the cell, in which the internal gas is discharged through the vacuum part, through a leakage prevention block, and a pre-sealing part configured to seal the gas pocket part.

This application provides a battery cell, a method and system for manufacturing same, a battery, and an electrical device. The battery cell includes: an electrode assembly; a shell assembly, configured to accommodate the electrode assembly and including a first side plate and a second side plate, where the first side plate and the second side plate are located on two sides of the electrode assembly along a first direction respectively; a pressure relief mechanism, disposed on the first side plate; and a support member, disposed between the electrode assembly and the first side plate, and configured to support the electrode assembly. A duct is provided on the support member. The duct is configured to guide gas between the second side plate and the support member into the pressure relief mechanism, so that the pressure relief mechanism is actuated to release a pressure when the pressure reaches a threshold.

An electric vehicle battery pack with a thermal shield that protects internal components from, for example, battery ventilation, and in particular allows battery pack electrical components to be placed above venting ends of batteries. The thermal shield is positioned above the venting ends of one or more batteries, and various battery pack electrical components may be placed above the thermal shield. Gases and particulate matter from battery venting are thus intercepted and deflected by the thermal shield, instead of damaging battery pack electrical components. In this manner, various battery pack electrical components may be placed above battery venting ends without risk of damage. This allows for a more compact and versatile arrangement of battery pack components.

A secondary battery is provided with a pouch, in which a sealing portion formed on an edge of the pouch is sealed when an electrode assembly and an electrolyte are enclosed. The secondary battery includes a valve which is mounted on a sealing portion so that one end the valve is disposed inside the pouch, and the other end of the valve is disposed outside the pouch and discharges a gas generated inside the pouch to the outside. The valve comprises an inner tube filled with an adhesive and made of a material that is deformed when swelling occurs. When the swelling occurs to increase in pressure inside the pouch, a gap is generated in a portion that is filled with the adhesive, and the gas within the pouch is discharged to the outside though the gap.

A battery includes a battery cell, a box configured to accommodate the battery cell, a pipe configured to condense a gas inside the box to form a condensate, and a liquid collecting member provided between the battery cell and the pipe. The liquid collecting member is provided with an accommodating portion facing the pipe, and the accommodating portion is configured to collect the condensate.