Battery pack
AssigneeSanyo Electric Co., Ltd.
InventorsTAKEAKI WAKABAYASHI, KENSAKU TAKEDA
Life of this patent
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Abstract
A battery pack includes battery cell having a discharge valve opened when an internal pressure exceeds a set pressure, and case housing battery cell. Case has opening, and opening is blocked by porous plate made of resin. Porous plate has a plurality of through-holes, an expansion gap of a discharge gas is formed by stacking a plurality of the porous plates, through-holes provided in each of porous plates are arranged at non-facing positions not facing through-holes provided in adjacent another porous plate, and the discharge gas of the discharge valve passes through through-holes provided in porous plates and the expansion gap and is discharged to an outside of the case.
Claims11
A battery pack comprising:
- a battery cell having a discharge valve opened when an internal pressure of the battery cell exceeds a set pressure;
- and
- a case housing the battery cell,
- wherein
- the case includes an opening,
- the opening is blocked by a porous plate made of resin,
- the porous plate has a plurality of through-holes,
- an expansion gap of a discharge gas is defined by stacking a plurality of the porous plates each being the porous plate,
- the plurality of through-holes provided in each of the porous plates are arranged at non-facing positions not facing the plurality of through-holes provided in adjacent another porous plate, and
- the discharge gas of the discharge valve passes through the plurality of through-holes provided in the porous plates and the expansion gap and is discharged to an outside of the case.
Dependencies are inferred from the claim text.