Battery pack
AssigneeContemporary Amperex Technology Co., Limited
InventorsYannan Chu, Mu Qian, Jinqing Ji
Life of this patent
Estimating the term…
Abstract
The present application provides a battery pack. The battery pack comprises a case, a cavity structure being provided in the bottom of the case; and a plurality of battery cells, the plurality of battery cells being stacked at the bottom of the case, and an end surface, facing the bottom of the case, of each of the battery cells being provided with an explosion-proof valve, wherein a structural layer, facing the explosion-proof valve, of the bottom of the case is provided with a weak area, and gas in the battery cell during thermal runaway of any battery cell may be collected via the weak area into the cavity structure and then is discharged.
Claims19
A battery pack, comprising:
- a case, a cavity structure being provided in the bottom of the case;
- a plurality of battery cells, the plurality of battery cells being stacked at the bottom of the case, and an end surface, facing the bottom of the case, of each of the battery cells being provided with an explosion-proof valve;
- and
- a flame-resistant bag;
- wherein a structural layer, facing the explosion-proof valve, of the bottom of the case is provided with a weak area, and gas in the battery cell during thermal runaway of any battery cell may be collected via the weak area into the cavity structure and then is discharged;
- and
- wherein the flame-resistant bag is internally provided with a flame-resistant medium, and the flame-resistant bag is located in the cavity structure, and is arranged corresponding to the weak area.
A vehicle, comprising a battery pack, wherein the battery pack comprising:
- a case, a cavity structure being provided in the bottom of the case;
- a plurality of battery cells, the plurality of battery cells being stacked at the bottom of the case, and an end surface, facing the bottom of the case, of each of the battery cells being provided with an explosion-proof valve;
- and
- a flame-resistant bag;
- wherein a structural layer, facing the explosion-proof valve, of the bottom of the case is provided with a weak area, and gas in the battery cell during thermal runaway of any battery cell may be collected via the weak area into the cavity structure and then is discharged;
- and
- wherein the flame-resistant bag is internally provided with a flame-resistant medium, and the flame-resistant bag is located in the cavity structure, and is arranged corresponding to the weak area.
Dependencies are inferred from the claim text.