Coin-shaped storage cell
AssigneePanasonic Corporation
InventorsMasayuki Sato, Masashige Ashizaki, Koichi Morikawa, Isamu Nishiyama, Nario Niibo, Masayuki Taniguchi
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Abstract
A coin-shaped storage cell (1) has a pair of polarizable electrodes (17, 18), an insulating separator (21) interposed between the polarizable electrodes, an electrolytic solution (22) impregnated in the polarizable electrodes (17, 18) and the separator (21), a metal case (11) for housing the polarizable electrodes (17, 18), an insulating ring packing (15) arranged in the metal case, and a top lid (13) which is caulked integrally with the metal case (11) via the ring packing (15). The inner bottom surface of the metal case (11) is provided with recessed and projected portions.
Claims7
A coin-shaped storage cell comprising:
- a pair of polarizable electrodes;
- an insulating separator which is interposed between the polarizable electrodes;
- an electrolytic solution which is impregnated in the polarizable electrode pair and the separator;
- a metal case for housing the polarizable electrode pair;
- an insulating ring packing which is disposed inside the metal case;
- a top lid which is integrally caulked with the metal case via the ring packing;
- and
- an annular bulging portion which is formed on the inner bottom surface of the metal case at a radially inner position relative to the ring packing, the annular bulging portion protruding toward the polarizable electrode pair,
- wherein the metal case includes an inner bottom surface formed with asperities.
A coin-shaped storage cell comprising:
- a pair of polarizable electrodes;
- an insulating separator which is interposed between the polarizable electrodes;
- an electrolytic solution which is impregnated in the polarizable electrode pair and the separator;
- a metal case for housing the polarizable electrode pair;
- an insulating ring packing which is disposed inside the metal case;
- and
- a top lid which is integrally caulked with the metal case via the ring packing, wherein
- the ring packing includes a bottom surface formed with a first annular bulging portion, the first annular bulging portion protruding toward the metal case.
Dependencies are inferred from the claim text.