Title:
BATTERY MODULE AND BATTERY MODULE MANUFACTURING METHOD
Document Type and Number:
Japanese Patent JP2022136733
Kind Code:
A
Abstract:
To securely weld lead plates to sealing bodies and caulking protrusion strips arranged on the same plane while arranging a plurality of cylindrical batteries in parallel postures facing the same direction.SOLUTION: A battery module includes a plurality of cylindrical batteries 1 that are stored in a battery holder 2 in postures in parallel with each other and are connected using lead plates 3, each of the cylindrical batteries 1 comprising a caulking protrusion strip 15 at an outer peripheral edge part of a first end surface 1A. The battery holder 2 has first electrode windows 25 for exposing sealing bodies 12 and second electrode windows 26 for exposing caulking protrusion strips 15, the first and second electrode windows being open at surface plate parts 22 facing first end surfaces 1A, the second electrode windows 26 being slits having a curved shape. The lead plates 3 each comprise: a first connection piece 31 welded to a sealing body 12 at a first electrode window 25; and a second connection piece 32 welded to a caulking protrusion strip 15 at a second electrode window 26, the second connection piece 32 having a belt-like shape curved in a shape along the caulking protrusion strip 15 and being partially welded to a region that partially covers at least the caulking protrusion strip.SELECTED DRAWING: Figure 4
Inventors:
SAKAMOTO TOMONORI
Application Number:
JP2021036487A
Publication Date:
September 21, 2022
Filing Date:
March 08, 2021
Export Citation:
Assignee:
SANYO ELECTRIC CO
International Classes:
H01M50/213; H01M50/107; H01M50/559; H01M50/566; H01M50/593
Attorney, Agent or Firm:
Patent Attorney Corporation Toyosu Patent Office
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