Patent ID: 11936061
Assignee: SANYO ELECTRIC CO., LTD.
Field: Electrical machinery, apparatus, energy (Electrical engineering)
Classification: CPC H  B  Y | IPC B  H

Claim 15:
16. A power supply device comprising:
a plurality of secondary battery cells each having a gas discharge valve for discharging internal gas; and
a cover part disposed on one surface of a battery stack including the plurality of secondary battery cells stacked, and covering the gas discharge valve of each of the plurality of secondary battery cells,
the cover part including with a gas guide path partitioned to discharge gas discharged from the gas discharge valve to an outside of the cover part, and the gas guide path including one or more horizontal gas flow bending portions that bend a flow direction of at least part of the gas in plan view of the cover part, wherein the gas guide path has end surface walls disposed at opposite ends in the stacked direction of the secondary battery cells,
the cover part constitutes an exhaust port for discharging the gas guided from the gas discharge valve to the gas guide path to the outside of the power supply device,
the battery stack has the plurality of secondary battery cells stacked,
the exhaust port is formed in a direction intersecting a stacking direction of the secondary battery cells, and
bus bars containing metal and configured to connect electrode terminals of the plurality of secondary battery cells are disposed inside the gas guide path and in front of the exhaust port.