A battery enclosure for a battery system. The system includes: a base configured to support battery cells; and a cover configured to be sealed to the base to enclose the battery cells between the base and the cover, the cover including a non-metallic composite layer and a metallic layer extending across an outer surface of the non-metallic composite layer. The metallic layer is configured to at least partially separate from the non-metallic composite layer in response to a thermal event within the battery enclosure to define an air gap between the metallic layer and the non-metallic composite layer.

A battery enclosure for a battery system. The system includes: a base configured to support battery cells; and a cover configured to be sealed to the base to enclose the battery cells between the base and the cover, the cover including a non-metallic composite layer and a metallic layer extending across an outer surface of the non-metallic composite layer. The metallic layer is configured to at least partially separate from the non-metallic composite layer in response to a thermal event within the battery enclosure to define an air gap between the metallic layer and the non-metallic composite layer.

A battery module including: a plurality of battery cells arranged in one direction, each of the plurality of battery cells including a vent in an upper side thereof, the vent having a thin film shape; and a protective member covering an upper side of the vent of each of the plurality of battery cells. The protective member being made of a foam heat insulating material including a plurality of pores.

A honeycomb-immersed heating and cooling integrated battery system includes a box with a top cover, multiple matrix arranged cells, a honeycomb structure, an upper cover plate, a lower cover plate and a coolant circulation component, where the honeycomb structure has multiple hexagonal close-packed special-shaped cylindrical chambers, each cylindrical chamber contains a cell, the upper cover plate and the lower cover plate are placed on the upper and lower surfaces of the honeycomb structure, respectively, the upper cover plate and the lower cover plate are provided with dense through-holes, the upper chamber is formed between the upper cover plate and the top cover, the lower chamber is formed between the lower cover plate and the bottom of the box, and the coolant circulation component is used to pump the coolant in the lower chamber to the upper chamber.

A honeycomb-immersed heating and cooling integrated battery system includes a box with a top cover, multiple matrix arranged cells, a honeycomb structure, an upper cover plate, a lower cover plate and a coolant circulation component, where the honeycomb structure has multiple hexagonal close-packed special-shaped cylindrical chambers, each cylindrical chamber contains a cell, the upper cover plate and the lower cover plate are placed on the upper and lower surfaces of the honeycomb structure, respectively, the upper cover plate and the lower cover plate are provided with dense through-holes, the upper chamber is formed between the upper cover plate and the top cover, the lower chamber is formed between the lower cover plate and the bottom of the box, and the coolant circulation component is used to pump the coolant in the lower chamber to the upper chamber.

A honeycomb-immersed heating and cooling integrated battery system includes a box with a top cover, multiple matrix arranged cells, a honeycomb structure, an upper cover plate, a lower cover plate and a coolant circulation component, where the honeycomb structure has multiple hexagonal close-packed special-shaped cylindrical chambers, each cylindrical chamber contains a cell, the upper cover plate and the lower cover plate are placed on the upper and lower surfaces of the honeycomb structure, respectively, the upper cover plate and the lower cover plate are provided with dense through-holes, the upper chamber is formed between the upper cover plate and the top cover, the lower chamber is formed between the lower cover plate and the bottom of the box, and the coolant circulation component is used to pump the coolant in the lower chamber to the upper chamber.

A honeycomb-immersed heating and cooling integrated battery system includes a box with a top cover, multiple matrix arranged cells, a honeycomb structure, an upper cover plate, a lower cover plate and a coolant circulation component, where the honeycomb structure has multiple hexagonal close-packed special-shaped cylindrical chambers, each cylindrical chamber contains a cell, the upper cover plate and the lower cover plate are placed on the upper and lower surfaces of the honeycomb structure, respectively, the upper cover plate and the lower cover plate are provided with dense through-holes, the upper chamber is formed between the upper cover plate and the top cover, the lower chamber is formed between the lower cover plate and the bottom of the box, and the coolant circulation component is used to pump the coolant in the lower chamber to the upper chamber.

A battery cell, a method for manufacturing a battery cell, a battery system, and an electric vehicle are disclosed. A battery cell includes a battery cell housing and a protective cover. The battery cell housing includes a pair of electrode terminals and a venting valve located on a terminal side. The protective cover is configured to cover the terminal side and to be folded to further cover two opposite side walls of the battery cell housing extending from the terminal side to an extent of at least 25 percent of an area of each of the opposite side walls. Further, the protective cover has a heat resistance of at least 800 C.

A battery cell, a method for manufacturing a battery cell, a battery system, and an electric vehicle are disclosed. A battery cell includes a battery cell housing and a protective cover. The battery cell housing includes a pair of electrode terminals and a venting valve located on a terminal side. The protective cover is configured to cover the terminal side and to be folded to further cover two opposite side walls of the battery cell housing extending from the terminal side to an extent of at least 25 percent of an area of each of the opposite side walls. Further, the protective cover has a heat resistance of at least 800 C.

A secondary battery includes an electrode assembly including a first electrode, a second electrode, a separator between the first and second electrodes, a first electrode tab connected to the first electrode, and a second electrode tab connected to the second electrode, a case that accommodates the electrode assembly and includes a top opening exposing an upper surface of the electrode assembly and a bottom opening exposing a lower surface of the electrode assembly, a cap plate combined with the case to cover a portion of the top opening, the cap plate having a conducting hole through which a remaining portion of the top opening of the case is exposed, an upper terminal plate above the cap plate and electrically connected to the first electrode tab through the conducting hole, and a lower terminal plate below the case and electrically connected to the second electrode tab through the bottom opening.