Title:
SECONDARY BATTERY, ELECTRONIC DEVICE, AND ELECTRIC TOOL
Document Type and Number:
WIPO Patent Application WO/2022/163479
Kind Code:
A1
Abstract:
The present invention enables inspection of winding misalignment relative to a secondary battery. The present invention provides a secondary battery that has: an electrode winding wherein a band-shaped positive electrode and a band-shaped negative electrode are stacked, with a separator therebetween; and a positive electrode current collector plate and a negative electrode current collector plate are housed in battery case. The positive electrode has, on top of a band-shaped positive electrode foil: a positive electrode active substance covered section in which a positive electrode active substance layer is covered; and a positive electrode active substance non-covered section. The negative electrode has, on top of a band-shaped negative electrode foil: a negative electrode active substance covered section in which a negative electrode active substance layer is covered; a negative electrode active substance non-covered section that extends in at least the longitudinal direction of the negative electrode foil; and an insulating layer provided between the negative electrode active substance covered section and the negative electrode active substance non-covered section. The positive electrode active substance non-covered section is bonded to the positive electrode current collector plate, at one end of the electrode winding. The negative electrode active substance non-covered section is bonded to the negative electrode current collector plate, at the other end of the electrode winding. The insulating layer contains a metal or metal compound having an X-ray blocking effect that is higher that a prescribed value.
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| JPS614157 | ALKALINE BATTERY |
| JPS536840 | SILVER OXIDE BATTERY |
Inventors:
SHINKAWA AKIRA (JP)
Application Number:
PCT/JP2022/001898
Publication Date:
August 04, 2022
Filing Date:
January 20, 2022
Export Citation:
Assignee:
MURATA MANUFACTURING CO (JP)
International Classes:
H01M4/66; H01M10/04; H01M50/10; H01M50/531
Foreign References:
| JP2000090958A | 2000-03-31 | |||
| JP2007095656A | 2007-04-12 |
Attorney, Agent or Firm:
SUGIURA PATENT OFFICE et al. (JP)
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