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

Claim 0:
1. 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 further includes a vertical gas flow bending portion that bends a flow direction of at least part of the gas in longitudinal sectional view of the cover part,
the gas guide path further includes a main path being linear and facing the gas discharge valve of each of the plurality of secondary battery cells, and at least one first sub-path disposed adjacent to the main path,
the main path and the at least one first sub-path are connected via the one or more horizontal gas flow bending portions, and
each of the one or more horizontal gas flow bending portions is an opening formed in a wall surface defining the main path.