A battery pack, characterized by comprising a plurality of batteries and a temperature control component, the plurality of batteries comprises a first battery and a second battery, the temperature control component is disposed between the first battery and the second battery, the temperature control component comprises a temperature control tube, and the temperature control tube comprises: a first side wall; a second side wall, disposed opposite to the first side wall in a longitudinal direction, and the second side wall being connected to the first side wall and forming a cavity together with the first side wall; at least part of an outer surface of the first side wall being formed into a curved surface concave toward the second side wall in the longitudinal direction; and at least part of an outer surface of the second side wall being formed into a curved surface concave toward the first side wall in the longitudinal direction; the first side wall comprises: a first main body portion, formed into a curved surface concave toward the second side wall in the longitudinal direction; and a first extension portion, connected to one end of the first main body portion and extending in an up-down direction; the second side wall comprises: a second main body portion, formed into a curved surface concave toward the first side wall in the longitudinal direction; and a second extension portion, connected to one end of the second main body portion and extending in the up-down direction, and the second extension portion being disposed opposite to the first extension portion in the longitudinal direction; and characterized in that the temperature control component further comprises: a first insulating member, sleeved outsides of the first extension portion of the first side wall and the second extension portion of the second side wall, and being in direct contact with the first battery and the second battery. a first side wall; a second side wall, disposed opposite to the first side wall in a longitudinal direction, and the second side wall being connected to the first side wall and forming a cavity together with the first side wall; at least part of an outer surface of the first side wall being formed into a curved surface concave toward the second side wall in the longitudinal direction; and at least part of an outer surface of the second side wall being formed into a curved surface concave toward the first side wall in the longitudinal direction; the first side wall comprises: a first main body portion, formed into a curved surface concave toward the second side wall in the longitudinal direction; and a first extension portion, connected to one end of the first main body portion and extending in an up-down direction; the second side wall comprises: a second main body portion, formed into a curved surface concave toward the first side wall in the longitudinal direction; and a second extension portion, connected to one end of the second main body portion and extending in the up-down direction, and the second extension portion being disposed opposite to the first extension portion in the longitudinal direction; and characterized in that the temperature control component further comprises: a first insulating member, sleeved outsides of the first extension portion of the first side wall and the second extension portion of the second side wall, and being in direct contact with the first battery and the second battery.