Battery pack and method for manufacturing same
AssigneePanasonic Energy Co., Ltd.
InventorKensaku TAKEDA
Life of this patent
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Abstract
A battery pack includes one or more secondary battery cells, an outer case that stores the one or more secondary battery cells, and a flame-retardant material interposed between the outer case and an end face of a secondary battery cell. The flame-retardant material is provided so that flame-retardant paper is folded to cover the secondary battery cell from an end face to a side face thereof and partially double-overlap at least the side face. This configuration in which the secondary battery cells are covered by folding the inexpensive flame-retardant paper can suppress leakage of flames to the outside of the outer case even in the event that the secondary battery cells catch fire.
Claims10
A battery pack comprising:
- one or more secondary battery cells;
- an outer case that stores the one or more secondary battery cells;
- and
- a flame-retardant material interposed between the outer case and an end face of a secondary battery cell,
- wherein the flame-retardant material is provided so that flame-retardant paper is folded to cover the secondary battery cell from an end face to a side face of the secondary battery cell and partially double-overlap at least the side face.
A method for manufacturing a battery pack, the battery pack comprising:
- one or more secondary battery cells;
- and
- an outer case that stores the one or more secondary battery cells,
- the method comprising:
- a step of folding flame-retardant paper to cover one of the one or more secondary battery cells from an end face to a side face of the secondary battery cell and partially double-overlap at least the side face;
- and
- a step of storing the one or more secondary battery cells in the outer case.
Dependencies are inferred from the claim text.