1results about How to "Reduce material thickness" patented technology

The utility model provides a single battery, battery pack and electronic device, this single battery includes casing, electrode assembly, lid and current collection member, the casing includes side wall, and the side wall surrounds to have the opening, electrode assembly installs in the casing, the lid blocks the opening, and is welded fixed with the side wall, current collection member sets up between the lid and electrode assembly, and current collection member and the current collection department of electrode assembly electric connection, wherein, at the side of lid away from electrode assembly, the lid includes thinning area, and the side surface of thinning area away from electrode assembly recess forms first recess, and the welding mark is formed by the welding connection of lid, side wall and current collection member, and the welding mark is located in first recess. The utility model can improve the technical problem of the welding quality of prior art because of the big thickness of lid, reduces the safety and the yield of single battery.