Battery cell, battery, and power consuming apparatus

A battery cell, comprising:

• a housing, provided with a mounting hole, wherein an accommodating cavity is defined in the housing;
• a terminal-post body, wherein the terminal-post body comprises a penetrating portion and an abutting portion, the penetrating portion penetrates through the mounting hole, the abutting portion abuts outside the housing, the abutting portion is connected to the penetrating portion and extends relative to the penetrating portion in a direction away from a central axis of the mounting hole, and a sink groove open in a direction away from the accommodating cavity is formed between the abutting portion and the penetrating portion, the sink groove is hollowed in a direction toward the accommodating cavity and is open in the direction away from the accommodating cavity, a notch of the sink groove is located on a surface of the terminal-post body on a side away from the accommodating cavity;
• and
• a terminal-post cover plate, covering the terminal-post body, wherein an edge of the terminal-post cover plate is disposed in the sink groove, and welded to the penetrating portion in a penetrating manner, and a welding structure formed through the welding is separated from the abutting portion, a separation space S is provided between the edge of the terminal-post cover plate and a side groove wall of the sink groove, the side groove wall is a surface of the sink groove close to the abutting portion, a distance between the welding structure and the abutting portion gradually increases in the direction away from the accommodating cavity.

A battery cell, comprising:

• a housing, provided with mounting hole, wherein an accommodating cavity is defined in the housing;
• a terminal-post body, wherein the terminal-post body penetrates through the mounting hole, the terminal-post body comprises an abutting portion abutting outside the housing, a sink groove is provided at an end portion of the terminal-post body away from the accommodating cavity, the sink groove is hollowed in a direction toward the accommodating cavity and is open in a direction away from the accommodating cavity, a notch of the sink groove is located on a surface of the terminal-post body on a side away from the accommodating cavity, and the sink groove is disposed closer to a central axis of the mounting hole than the abutting portion;
• and
• a terminal-post cover plate, covering the terminal-post body and comprising a connection portion connected to a part of the terminal-post body at the sink groove, wherein when a surface perpendicular to an axial direction of the mounting hole is used as a projection surface and the axial direction of the mounting hole is used as a projection direction, a projection of a part of the abutting portion that abuts against the housing on the projection surface is separated from a projection of one of the connection portions on the projection surface,
• wherein the terminal-post body comprises a penetrating portion penetrating through the mounting hole, and the abutting portion is connected to the penetrating portion and extends relative to the penetrating portion in a direction away from the central axis of the mounting hole;
• a separation space S is provided between the connection portion and a side groove wall of the sink groove, the side groove wall is a surface of the sink groove close to the abutting portion, a part of a projection of the abutting portion on the projection surface is located within a projection range of the mounting hole on the projection surface, the projection of the connection portion on the projection surface is located within a projection range of the penetrating portion on the projection surface, and the connection portion is disposed on the penetrating portion and connected to the penetrating portion.