Method of manufacturing electricity storage device
AssigneePrime Planet Energy & Solutions, Inc.
InventorKazuki TAMURA
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Abstract
A method of manufacturing an electricity storage device includes a first preparing step of preparing a case body including an open end, a second preparing step of preparing a sealing plate for sealing the open end of the case body, an assembling step of attaching the sealing plate to the open end of the case body, and a welding step of welding the case body and the sealing plate by applying a laser beam along a boundary between the case body and the sealing plate. The sealing plate prepared in the second preparing step includes a recessed portion recessed downwardly in a circumferential end portion of an upper surface of the sealing plate. In the welding step, a laser beam is applied to the recessed portion of the sealing plate to weld the case body and the sealing plate.
Claims9
A method of manufacturing an electricity storage device, comprising:
- a first preparing step of preparing a case body including an open end;
- a second preparing step of preparing a sealing plate sealing the open end of the case body;
- an assembling step of attaching the sealing plate to the open end of the case body;
- and
- a welding step of welding the case body and the sealing plate by applying a laser beam along a boundary between the case body and the sealing plate, wherein:
- the sealing plate prepared in the second preparing step includes a recessed portion recessed downwardly in a circumferential end portion of an upper surface of the sealing plate;
- and
- in the welding step, the laser beam is applied to the recessed portion of the sealing plate to weld the case body and the sealing plate.
Dependencies are inferred from the claim text.