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, 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 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.