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Patent Searching and Data


Title:
CYLINDRICAL BATTERY
Document Type and Number:
WIPO Patent Application WO/2019/163179
Kind Code:
A1
Abstract:
According to the present invention, an opening section of a battery case is doubly wound and sealed at an outer circumferential section of a cover body; the opening section-side outer circumferential section of the battery case decreases in diameter toward the inside in the radial direction; the outer circumferential surface of the battery case is covered with an exterior label 12; in the opening section-side outer circumferential section of the battery case, a space section is formed which is surrounded by the outer circumferential surface of the battery case, the outer circumferential section of the cover body, and the exterior label; and when T1 (mm) is the thickness of the battery case and A (mm2) is the cross-sectional area of a cross-section perpendicular to the radial direction of the space section, the expression 4×T1 2≦A is satisfied within the range of 0.1 mm≤T1≤0.5 mm.

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Inventors:
YAMATO Kenji
TAKAHASHI Tadayoshi
Application Number:
JP2018/035062
Publication Date:
August 29, 2019
Filing Date:
September 21, 2018
Export Citation:
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Assignee:
PANASONIC INTELLECTUAL PROPERTY MANAGEMENT CO., LTD. (1-61, Shiromi 2-chome Chuo-ku, Osaka-sh, Osaka 07, 〒5406207, JP)
International Classes:
H01M2/02; H01M2/04
Attorney, Agent or Firm:
KAMATA Kenji et al. (1-61, Shiromi 2-chome, Chuo-ku, Osaka-sh, Osaka 07, 〒5406207, JP)
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