Title:
電池の製造方法
Document Type and Number:
Japanese Patent JP6820560
Kind Code:
B2
Abstract:
To provide a manufacturing method for a battery capable of performing satisfactory laser sealing.SOLUTION: A manufacturing method for a battery is provided for sealing an opening of a case in which an electrolyte is accommodated, with a sealing plate. The manufacturing method for the battery includes the steps of: fitting a rising part which protrudes closer to a top face of the sealing plate at an outer edge of the sealing plate, to an inner periphery of the opening of the case; forming a temporary fixing melting part for temporarily fixing the sealing plate to the case by melting a sidewall of the case and the rising part by irradiating a region where the case and the rising part are fitted, with a first laser beam in a side face direction of the case; and forming a seam melting part for welding an opening end of the case and an end of the rising part at a position separated from the temporary fixing melting part by melting the opening end of the case and the end of the rising part by irradiating the ends with a second laser beam.SELECTED DRAWING: Figure 1
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Inventors:
Masahiro Mori
Application Number:
JP2017242032A
Publication Date:
January 27, 2021
Filing Date:
December 18, 2017
Export Citation:
Assignee:
Panasonic IP Management Co., Ltd.
International Classes:
H01M50/10; H01M50/147
Domestic Patent References:
| JP2011212711A | ||||
| JP8315790A | ||||
| JP2009277593A |
Foreign References:
| US20110240613 | ||||
| US5879416 | ||||
| US20140134467 | ||||
| KR101218370B1 |
Attorney, Agent or Firm:
Michiko Matsutani
Hiroshi Okabe
Kenichi Nakatani
Hiroshi Okabe
Kenichi Nakatani