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US 2013/0171510 A1Published application
Cell and method for manufacturing cell
AssigneeGS Yuasa International Ltd.
InventorMasakazu Tsutsumi
Life of this patent
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Abstract
Provided are a cell capable of preventing damage to an insulating gasket by spatter scattered when a battery case and a cover plate are laser-welded together, and thereby ensuring sealability of a cell case and a method for manufacturing the cell. A shielding member is arranged between a weld line and at least a portion of the insulating gasket adjacent to the weld line. Since the shielding member blocks the spatter scattered toward the insulating gasket, the insulating gasket is not damaged by the spatter. The insulating gasket is not damaged, so that adhesion between the insulating gasket and the cover plate is not lowered, and the sealability of the cell case is ensured.
Claims14
A cell comprising:
- an electrode assembly;
- a battery case that includes an opening portion at one end so as to accommodate the electrode assembly inside thereof;
- a cover plate that closes the opening portion of the battery case, a peripheral edge portion of an outer surface of the cover plate and a peripheral edge portion of the opening portion of the battery case being welded together to form a weld line;
- a connection terminal that is arranged on the outer surface of the cover plate and electrically connected with a connection object;
- a connection member that is inserted through the cover plate to electrically connect the connection terminal and the electrode assembly;
- an insulating gasket that is interposed between the cover plate and the connection terminal;
- and
- a shielding member that has at least a portion that is arranged between the weld line and a portion of the insulating gasket adjacent to the weld line.
5 more elements
A method for manufacturing a cell comprising:
- a providing step of providing an electrode assembly, a battery case, a cover plate, a connection terminal, a connection member, an insulating gasket, and a shielding member;
- an assembling step of arranging the insulating gasket on one surface of the cover plate, inserting the connection member through the cover plate and the insulating gasket, and thereafter electrically connecting the electrode assembly and the connection terminal via the connection member;
- and
- a sealing step of accommodating the electrode assembly within the battery case from an opening portion of the battery case after the assembling step, closing the opening portion of the battery case by the cover plate such that the one surface of the cover plate becomes an outer surface, and thereafter sealing a peripheral edge portion of the outer surface of the cover plate and a peripheral edge portion of the opening portion of the battery case by laser welding,
- the method further comprising, before the sealing step, a shielding member arranging step of arranging at least a portion of the shielding member between a position to be welded as a portion where the peripheral edge portion of the outer surface of the cover plate and the peripheral edge portion of the opening portion of the battery case are welded together, and least a portion of the insulating gasket adjacent to the position to be welded.
2 more elements
A method for manufacturing a cell comprising:
- a providing step of providing an electrode assembly, a battery case, a cover plate, a connection terminal, a connection member, and an insulating gasket, the cover plate including a shielding member that has at least a portion arranged between a weld line obtained by welding a peripheral edge portion of an outer surface of the cover plate and a peripheral edge portion of an opening portion of the battery case, and a portion of the insulating gasket adjacent to the weld line;
- an assembling step of arranging the insulating gasket on one surface of the cover plate, inserting the connection member through the cover plate and the insulating gasket, and thereafter electrically connecting the electrode assembly and the connection terminal via the connection member;
- and
- a sealing step of accommodating the electrode assembly within the battery case from the opening portion of the battery case after the assembling step, closing the opening portion of the battery case by the cover plate such that the one surface of the cover plate becomes an outer surface, and thereafter sealing the peripheral edge portion of the outer surface of the cover plate and the peripheral edge portion of the opening portion of the battery case by laser welding.
1 more element
Dependencies are inferred from the claim text.