Patent ID: 11955614
Assignee: TOYOTA JIDOSHA KABUSHIKI KAISHA
Field: Electrical machinery, apparatus, energy (Electrical engineering)
Classification: CPC H  Y | IPC H

Claim 0:
1. A battery pack comprising:
a battery stack including a plurality of battery cells arrayed in a thickness direction;
a housing accommodating the battery stack;
a heater substrate including metal patterns that are electrified to generate heat, the heater substrate being disposed inside the housing such that the metal patterns respectively oppose the plurality of battery cells; and
a plurality of heat conduction sheets respectively interposed between the plurality of battery cells and the metal patterns, wherein
the metal patterns are formed by a single wire extending from a first end of the heater substrate to a second end of the heater substrate, extending in an offset direction, and returning to the first end,
the metal patterns are connected electrically in series, and
a first free end of the metal patterns is connected to a positive electrode and a second free end of the metal patterns is connected to a negative electrode.