Battery, connector and electric device

The utility model discloses a battery, a connector and an electric device. The battery comprises a battery box body forming an accommodating space; the battery monomers are arranged in the accommodating space; the heat exchange mechanism is arranged in the accommodating space and is used for realizing heat exchange between the battery monomers and the external environment; the pipe body communicates with the heat exchange cavity of the heat exchange mechanism and is used for conveying a heat exchange medium of the heat exchange cavity; the at least one joint is used for communicating the pipe body with the heat exchange cavity and/or communicating the pipe body with a drainage opening of the battery box body; the connector comprises a connector body and a low-precipitation layer, a first through hole is formed in the connector body, and the first through hole is composed of a first hole section and a second hole section which are connected. A second through hole is formed in the low-precipitation layer, the joint body is arranged outside the low-precipitation layer in a sleeving manner, and the low-precipitation layer covers the inner wall of the first hole section; one end of the pipe body is sleeved with the second hole section, and the low-precipitation layer is connected with the end in a sealed mode. The heat exchange efficiency of the heat exchange medium can be improved, and the reliability of the connector and the battery is improved.