A battery module having a plurality of battery cells and a first housing element (21) and a second housing element (22) is disclosed. The housing elements together form an interior space (9) in which the plurality of battery cells is accommodated, and are each formed from a metal material, the first housing element (21) having a projection (31) and the second housing element (22) having an indentation (32), the projection (31) engaging in the indentation (32). On a side facing away from the interior space, the first housing element (21) has a first weld region (41) and the second housing element (22) has a second weld region (42), the first weld region (41) and the second weld region (42) being connected to one another by welding.

The embodiments of the application provide a battery cell and a manufacturing method and system therefor, a battery and an electric device. An end cover assembly includes: a battery box including a first wall and a pressure relief mechanism; and a protective member positioned on an outer side of the first wall and including a body portion, a shielding portion and a weak portion. The shielding portion can block emissions released from other battery cells, so as to reduce risk of melt-through of the pressure relief mechanism caused by the emissions. When thermal runaway occurs in the battery cell, the weak portion is broken under the action of a high-temperature and high-pressure substance, such that the high-temperature and high-pressure substance are discharged in time.

The embodiments of the application provide a battery cell and a manufacturing method and system therefor, a battery and an electric device. An end cover assembly includes: a battery box including a first wall and a pressure relief mechanism; and a protective member positioned on an outer side of the first wall and including a body portion, a shielding portion and a weak portion. The shielding portion can block emissions released from other battery cells, so as to reduce risk of melt-through of the pressure relief mechanism caused by the emissions. When thermal runaway occurs in the battery cell, the weak portion is broken under the action of a high-temperature and high-pressure substance, such that the high-temperature and high-pressure substance are discharged in time.

A pack housing includes an internal space capable of accommodating battery cells. The pack housing also includes a venting hole provided in at least one surface of the pack housing to communicate with the internal space; and a hole cover assembly configured to cover the venting hole. The hole cover assembly includes a filter mesh including a resin filter layer formed of a resin and a mesh integrated with the resin filter layer by insert injection and placed in the venting hole; and a mounting plate provided in the form of a frame having an empty center and coupled to the at least one surface of the pack housing while pressing an edge region of the filter mesh.

A pack housing includes an internal space capable of accommodating battery cells. The pack housing also includes a venting hole provided in at least one surface of the pack housing to communicate with the internal space; and a hole cover assembly configured to cover the venting hole. The hole cover assembly includes a filter mesh including a resin filter layer formed of a resin and a mesh integrated with the resin filter layer by insert injection and placed in the venting hole; and a mounting plate provided in the form of a frame having an empty center and coupled to the at least one surface of the pack housing while pressing an edge region of the filter mesh.

A battery assembly includes a battery array and a foam shell that surrounds the battery array. The battery array may be housed within a foam shell, and a barrier can be secured to the foam shell to establish a battery assembly. The battery assembly may then be secured to a vehicle body.

A method for making a battery system includes applying fast-cure and slow-cure adhesives to interfaces between components. The fast-cure adhesive allows manipulation of the assembly during manufacturing while the slow-cure adhesive cures. The slow-cure adhesive provides desired strength and toughness as needed during use of the final assembly. The fast-cure adhesive and slow-cure adhesive have respective curing schedules. The fast-cure adhesive includes a moisture-curing adhesive or any other suitable adhesive curing on the order of seconds such as UV-activated or cyanoacrylate adhesives. The slow cure adhesive includes any suitable structural adhesive such as a two-part mix-cure epoxy or acrylic. The components adhered using the fast-cure adhesive and slow-cure adhesive include side wall sections, battery cells, mounting bracket, bus bars, or any other suitable components. The fast-cure and slow-cure adhesives are applied in any suitable pattern such as, for example, beads, dots, paths, non-intersecting paths, or any other suitable application shape.

A battery pack for an electric aircraft is disclosed. The battery pack may include a pouch cell within a sealed environment, wherein the pouch cell may include a pair of electrodes, wherein the pair of electrodes is configured to carry electrical current. The pouch cell may include an insulator layer, the insulator layer located between the pair of electrodes. The pouch cell may include an electrolyte within the pouch cell. The pouch cell may include a pouch, the pouch substantially surrounding the pair of electrodes, the electrolyte and the insulator layer. The pouch cell may include a pair of foil tabs in electrical communication with the pair of electrodes and emanating from the sealed environment. The pouch cell may include a seal, wherein the seal is configured to seal about the pair of foil tabs and prevent a flow of cell ejecta from a thermal runaway.

A battery pack for an electric aircraft is disclosed. The battery pack may include a pouch cell within a sealed environment, wherein the pouch cell may include a pair of electrodes, wherein the pair of electrodes is configured to carry electrical current. The pouch cell may include an insulator layer, the insulator layer located between the pair of electrodes. The pouch cell may include an electrolyte within the pouch cell. The pouch cell may include a pouch, the pouch substantially surrounding the pair of electrodes, the electrolyte and the insulator layer. The pouch cell may include a pair of foil tabs in electrical communication with the pair of electrodes and emanating from the sealed environment. The pouch cell may include a seal, wherein the seal is configured to seal about the pair of foil tabs and prevent a flow of cell ejecta from a thermal runaway.

A traction battery pack assembly includes, among other things, a foam section of a battery pack enclosure. The foam section provides a recessed area that at least partially receives a traction battery array. A substructure assembly is partially disposed within the foam section. An attachment point is provided by the substructure assembly. The attachment point is outside the foam section.