Box, battery, electrical device and method for manufacturing battery

A box, applicable to a battery, the battery comprising a battery cell, wherein the box comprises:

• a plurality of box walls, wherein the plurality of box walls enclose a first chamber for accommodating the battery cell, and at least one of the box walls is internally provided with a second chamber for accommodating fire-fighting agent, the plurality of box walls are provided with a communication port for allowing the first chamber to be communicated with the second chamber,
• a conduit located in the first chamber and having two ends, at least one of the two ends is connected with the box, an inside of the conduit is communicated with the second chamber through the communication port when the battery cell is thermal-runaway, at least a portion of the conduit is configured to be broken by emissions produced by thermal runaway of the battery cell,
• a weak member configured for closing the communication port, wherein the conduit is sleeved outside the communication port and the weak member, the weak member is configured to be broken when a pressure of the second chamber reaches a third threshold, so that the first chamber and the second chamber is communicated with each other,
• wherein the first chamber and the second chamber are configured to communicate with each other when the battery cell is thermal-runaway to enable the fire-fighting agent to release fire-fighting medium into the first chamber.