Regarding thermal runaway of the battery cell, an existing effective solution is to provide a fire prevention pipeline. To be specific, when the battery cell experiences thermal runaway, a fire prevention pipeline is used to prevent or delay explosion or fire of the battery cell. The fire prevention pipeline is typically provided in the box body. When the battery cell experiences thermal runaway, the fire prevention pipeline releases a fire prevention medium to implement fire prevention. However, the inventors have found that although the fire prevention pipeline is provided, a battery using the fire prevention pipeline mentioned above still cannot implement timely fire prevention in the case of thermal runaway of the battery. In view of the foregoing problem, the inventors have tried to change the position of the fire prevention pipeline and the fire prevention manner, but none of them can solve the foregoing problem. After long term research, the inventors have further discovered that the battery provided with the fire prevention pipeline still had a safety risk because the fire prevention pipeline was displaced in the process of thermal runaway of the battery, so that the fire prevention pipeline was unable to implement timely fire prevention on the part that experiences thermal runaway. In other words, the fire prevention pipeline was not fastened reliably.

In view of this, this application is intended to provide a battery, where an electrode terminal is connected to a fastener, to fasten the fastener to a battery cell, and a fire prevention pipeline is fastened by using the fastener. The problem of untimely fire prevention caused by displacement of the fire prevention pipeline in the process of thermal runaway of the battery in the prior art may be overcome.