Battery including a sealing member and a reinforcing member for

Details Battery including a sealing member and a reinforcing member for Battery including a sealing member and a reinforcing member for

1992-01-10

1992-12-22

Skapars, Anthony

Chemistry: electrical current producing apparatus, product, and

Current producing cell, elements, subcombinations and...

Cell enclosure structure, e.g., housing, casing, container,...

429185, 429 56, H01M 208

Patent

active

051733790

ABSTRACT:
A battery including a sealing member 10 for sealing an opening 7 of a battery housing 1, a current collecting pin 5 press-fitted in a through hole 11 formed through the sealing member 10, and a reinforcing member 20 for reinforcing the sealing member 10. The reinforcing member 20 is constituted of a thick-walled portion 21 for covering an outer circumferential surface of a cylindrical portion 12 of the sealing member 10 forming the through hole 11 and a disk portion 22 extending radially outwardly from the thick-walled portion 21. A space 8 is defined between the sealing member 10 and the reinforcing member 20, and a thin-walled portion 13 for preventing an increase in internal pressure in the battery housing 1 is formed in the sealing member 10 at a position opposed to the space 8. The sealing member 10 is reinforced by the thick-walled portion 21 to thereby prevent generation of cracks in the sealing member 10 and electrolyte leakage accompanied thereby. Further, when the internal pressure increases, the thin walled portion 13 is reliably broken to suppress the increase in the internal pressure.

REFERENCES:
patent: 4048401 (1977-09-01), Epstein
patent: 4110518 (1978-08-01), Gilmour et al.
patent: 4191806 (1980-03-01), Levy

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