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 (Y), 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 (Y); 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 (Y); 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 (Y); and a first extension portion , connected to one end of the first main body portion and extending in an up-down direction (Z); 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 (Y); and a second extension portion , connected to one end of the second main body portion and extending in the up-down direction (Z), and the second extension portion being disposed opposite to the first extension portion in the longitudinal direction (Y); 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 (Y), 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 (Y); 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 (Y); 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 (Y); and a first extension portion , connected to one end of the first main body portion and extending in an up-down direction (Z); 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 (Y); and a second extension portion , connected to one end of the second main body portion and extending in the up-down direction (Z), and the second extension portion being disposed opposite to the first extension portion in the longitudinal direction (Y); 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 . <EOS>