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Title:
INSULATING SHEET AND BATTERY PACK
Document Type and Number:
WIPO Patent Application WO/2023/120545
Kind Code:
A1
Abstract:
The present invention provides an insulating sheet having outstanding insulating properties over a broad temperature range from temperatures during ordinary battery use to high temperatures of 500°C or more. An insulating sheet (10) includes first inorganic particles (20), second inorganic particles (21) comprising nanoparticles, first inorganic fibers (30), and second inorganic fibers (31). The total content of the first inorganic particles (20) and the second inorganic particles (21) is 30 wt. % to 90 wt. %, inclusive, of the total mass of the insulating sheet, and in the cumulative distribution by volume of the first inorganic particles measured by a laser diffraction and scattering method, D50 of the first inorganic particles (20) is 1 µm to 100 µm, inclusive, and the ratio of D90 to D10 (D90/D10) is 10 to 1000, inclusive, where D10, D50, and D90 are the cumulative 10%, 50%, and 90% particle diameters, respectively, starting from small particle diameters.

Inventors:
TAKAHASHI NAOKI (JP)
JIMBO NAOYUKI (JP)
Application Number:
PCT/JP2022/046980
Publication Date:
June 29, 2023
Filing Date:
December 20, 2022
Export Citation:
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Assignee:
IBIDEN CO LTD (JP)
International Classes:
C01G23/047; F16L59/02; H01M10/613; H01M10/651; H01M10/6555; H01M10/658; H01M10/659
Domestic Patent References:
WO2022163853A12022-08-04
Foreign References:
JP2021064510A2021-04-22
JP2017043667A2017-03-02
JP2020165065A2020-10-08
JP2021034278A2021-03-01
JP2020119840A2020-08-06
JP2018160445A2018-10-11
JP2005146124A2005-06-09
JP2010100682A2010-05-06
JP2012193656A2012-10-11
JP2022024234A2022-02-09
Attorney, Agent or Firm:
EIKOH, P.C. (JP)
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