Abstract: A cover assembly, a battery and an electronic device are provided. The cover assembly includes a cover body, a boss, and a heat-resistant sheet. A pressure relief hole is provided on the cover body. The boss is disposed on the top surface of the cover body, and surrounds the outer periphery of the pressure relief hole. The boss encloses a first region communicated with the pressure relief hole, and together with the pressure relief hole constitute an accommodation space. The heat-resistant sheet is disposed in the accommodation space and at least partially covers the pressure relief hole.

Abstract: The present disclosure relates to the technical field of batteries, and specifically relates to a busbar-less battery module and a battery pack. The busbar-less battery module provided in the present disclosure includes a plurality of cells, and tabs are provided at both ends of each cell, and the interconnected cells are directly connected through the tabs, and an isolation component is provided between the adjacent cells. In the present disclosure, the tabs are directly connected, and omission of bus bars prevents the bus bar from blocking the high-temperature fume, so that the high-temperature fume may be exhausted in time when thermal runaway occurs. In the meantime, the tabs of the cell may be isolated to prevent adjacent tabs from contacting each other during operation and causing thermal runaway due to short circuit, thereby avoiding spread of heat at the tabs.

Abstract: A battery and an electronic device are provided. The battery includes a case having an opening, a battery core disposed in the case, and a cover covering the opening of the case. The cover includes a cover body provided with a first hole and a high temperature resistant sheet disposed on a top of the cover body and covering the first hole.

Abstract: A battery, a battery assembly, and an electronic apparatus are provided. The battery includes: a casing having an opening; a cell disposed in the casing; and a cover plate covering the opening of the casing. The cover plate includes a cover plate body provided with a first hole and a high temperature resistant sheet disposed on an upper surface of the cover plate body and covering an upper opening of the first hole. The high temperature resistant sheet has a weak portion, and at least a part of an orthographic projection of the weak portion is located in the first hole in a direction perpendicular to the cover plate body.

Abstract: A solid-state battery module and a battery pack belonging to the technical field of batteries are provided. The solid-state battery module includes a casing and a cell stack disposed in the casing. The casing includes a top plate, a bottom plate, and two side plates, The two side plates are connected between the top plate and the bottom plate, and the two side plates are opposite to each other. At least one of the side plates is able to move relative to the top plate and the bottom plate in a first direction. In the battery pack provided by the disclosure, each of the side plates of the solid-state battery module and the box body are connected by a connecting piece. The connecting piece is able to generate plastic deformation in the stacking direction of the cell stack.

Abstract: The disclosure relates to the technical field of batteries, and in particular, to a battery module and an electronic device. The battery module includes a frame, a cell, a position-limiting member, and a buffer member. A plurality of the cells are stacked in the frame in parallel. The position-limiting member is disposed in the frame, and divides the frame into a plurality of spaces for the cells being evenly arranged. A plurality of the buffer members are respectively disposed between the adjacent cells and/or between the cell and the frame.

Abstract: A battery module and an electronic device are provided. The battery module includes a case and a cell. Multiple cells are stacked in the case along a thickness direction. The case includes a base plate, an upper cover, and a side wall. The side wall is formed by enclosing multiple side plates. The side plates include at least one movable plate capable of sliding along a stacking direction of the cells. When the cell swells, an swelling force and an swelling amount of the cell pushes the outermost cell to move toward the stacking direction, so that the movable plate is pushed and slides along with the swelling of the cell, which can reduce the swelling force on the movable plate to effectively reduce the swelling force on the movable plate in an swelling direction of the cell, so as to significantly improve the safety of the battery module.

Abstract: Provided are an asynchronous heating and calendering device, a large wide ultra-thin lithium metal foil, and preparation method and use thereof, wherein the asynchronous heating and calendering device comprises: a pulling-substrate unwinding unit (E) for unwinding a pulling-substrate (P); a lithium strip unwinding unit (D) for unwinding a lithium strip (S); an asynchronous heating and calendering unit (H) which comprises: a first calendering roller (B), a second calendering roller (A) and a heating box (C), wherein the heating box (C) is used to heat the first calendering roller (B), the first calendering roller (B) heats the pulling-substrate (P), and the first calendering roller (B) and the second calendering roller (A) have parallel axes and are arranged opposite to each other, so that the pulling-substrate (P) and the lithium strip (S) are combined into a composite strip (Z); and a winding unit (G) for winding the composite strip (Z).

Abstract: Provided are a gravure coating device for preparing a large-width ultrathin metal lithium strip and the preparation method, relating to the technical field of preparation of metal lithium materials.