This application provides a battery and an electrical device. The battery includes a battery cell, a busbar, and an insulation piece. The battery cell includes a shell and an electrode terminal. The shell includes a first wall. The electrode terminal is di...

An air tightness check method and a test system are disclosed. The test system includes a control apparatus, a scanning apparatus, a pressing apparatus and a check apparatus. The air tightness check method includes: in response to a battery pack flowing in...

Provided are a positive electrode active material, a positive electrode plate, a battery cell, a battery and an electrical apparatus, which belongs to the technical field of secondary batteries. The positive electrode active material includes a lithium-ric...

A battery cell includes: an end cap assembly, including an electrode terminal; a housing, on which an opening is created, where the end cap assembly seals the opening; an electrode assembly, disposed in the housing, where the electrode assembly includes a ...

A battery assembly system, a control method, and a battery production line are described. The battery assembly system includes a stacking platform, an assembly apparatus, an assembly circulation line, and a return apparatus. The stacking platform is config...

The present disclosure relate to the technical field of secondary batteries, and in particular, to a secondary battery and a top cover component thereof. The top cover component provided by the present disclosure includes a top cover plate having an electr...

This application relates to a positive electrode plate and an electrochemical device. The positive electrode plate includes a current collector, a positive electrode active material layer and a safety coating disposed between the current collector and the ...

Embodiments of the present application provide a charging and discharging apparatus and a battery charging method, which are capable of ensuring security performance of a battery. The apparatus comprises a bi-directional DC/DC converter and a control unit,...

A secondary battery includes a housing, and a cell assembly and an electrolyte that are disposed in the housing. The cell assembly includes a negative electrode plate, a separator, and a positive electrode plate that are sequentially stacked. The positive ...