Patent ID: 8809743

Claim:
A battery structure with heater, comprising: a battery structure being a battery pack including a plurality of cells or battery modules and a housing case accommodating the plurality of cells or battery modules, an outer surface of the housing case including a surface to be heated; and a heater for heating the plurality of cells or battery modules by heating the surface to be heated; wherein the surface to be heated includes: a flat part to be heated, and a recessed portion that is a recess in an outer surface of the surface to be heated, being recessed toward an inside direction of the battery structure, and that defines, via an inner surface of the surface to be heated, a protrusion that projects into an inside space of the battery structure in a same direction as the recess; the heater is a heater with a temperature detecting device, including: a laminated heater including: a first insulating resin film, a second insulating resin film, a heater element made of metal foil, the heater element being interposed between a first surface of the first insulating resin film and a first surface of the second insulating resin film, and a first metal sheet laminated on a second surface of the first insulating resin film; the first metal sheet partly forms a protruding part on a first surface opposite from a second surface that is laminated with the second surface of the first insulating resin film to provide at least an accommodation space in which the temperature detecting device is accommodated; the temperature detecting device is thicker in a thickness direction of the laminated heater than the entire laminated heater at a portion where the protruding part does not exist; the accommodation space includes a through hole formed through a film heater part in which the first insulating resin film, the second insulating resin film, and the heater element are laminated; and the heater with the temperature detecting device is arranged such that the protruding part of the first metal sheet is received in the recessed portion of the surface to be heated, and the first surface of the first metal sheet is placed in direct contact with the flat part to be heated.