| 摘要 |
A large-capacity battery pack, including multiple battery cells connected with each other in parallel, wherein the battery cell has a through hole and is ring-shaped, and multiple battery cells are nested with each other in the way that the one places inside the other one. By parallel connection among the battery cells which are nested with each other, the problem of bulky volume and low energy density of the ring-shaped battery with large-capacity, high power density and low-thickness can be solved and heat-dispersing performance of the battery pack further can be improved A ring-shaped battery cell with radiating fins is provided. |
