Battery device and power-consuming device

Abstract

Battery device comprising: a box (10) wherein a receiving chamber (11) is formed inside the box (10), the box (10) having a first through-hole (12); a connecting plate (20) arranged on the outside of the box (10) and fixedly connected to the box (10), the connecting plate (20) having a second through-hole (21); a heat exchange connection pipe (30) wherein one end of the heat exchange connection pipe (30) is arranged in the receiving chamber (11) and the other end passes successively through the first through-hole (12) and the second through-hole (21) and projects outwards to the outside of the box (10), and wherein the heat exchange connection pipe (30) is sealedly connected to the connecting plate (20); a heat exchange connection (40) which is attached to the connecting plate (20) and arranged on a side of the connecting plate (20) facing away from the box (10).wherein the heat exchange connection (40) has a connection hole, the other end of the heat exchange connection pipe (30) being inserted into the connection hole, the heat exchange connection (40) comprising a first sealing element (43), the first sealing element (43) extending annularly in the circumferential direction of the heat exchange connection pipe (30) and fitting tightly between the radial outer surface of the heat exchange connection pipe (30) and the inner wall surface of the connection hole, a cavity (42) being defined between the first sealing element (43), the inner wall surface of the connection hole and the heat exchange connection pipe (30), and wherein in the axial direction of the first sealing element (43) the cavity (42) is located on a side of the first sealing element (43) facing the connecting plate (20), the heat exchange connection (40) and / or the connecting plate (20) being / are provided with a first fluid drainage channel,wherein one end of the first liquid drainage channel communicates with the cavity (42) and the other end communicates with the outside space.