Method for fabricating electricity storage device and electricity storage device
AssigneePrime Planet Energy & Solutions, Inc.
InventorKazuki TAMURA
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Abstract
A method for fabricating an electricity storage device includes: preparing a square case including a rectangular opening; preparing a sealing plate to be attached to the opening along an edge of the opening; preparing assembly of attaching the sealing plate to the opening of the case; and performing main welding of laser welding the case and the sealing plate over an entire circumference of a periphery of the sealing plate. In the main welding, laser welding over the entire circumference of the sealing plate is performed in at least four steps.
Claims11
A method for fabricating an electricity storage device, the method comprising:
- preparing a square case including an opening;
- preparing a sealing plate to be attached to the opening along an edge of the opening;
- preparing assembly of attaching the sealing plate to the opening of the case;
- and
- performing main welding of laser welding the case and the sealing plate over an entire circumference of a periphery of the sealing plate, wherein
- in the main welding, laser welding over the entire circumference of the periphery of the sealing plate is performed in at least four steps.
Dependencies are inferred from the claim text.