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Title:
THERMAL RUNAWAY SUPPRESSION SHEET, BATTERY PACK USING SAME, AND BATTERY PACK MODULE
Document Type and Number:
WIPO Patent Application WO/2023/157781
Kind Code:
A1
Abstract:
Provided are: a thermal runaway suppression sheet having a maximum thickness of 3 mm or less and capable of providing heat insulation to a temperature that can suppress a chain of thermal runaway in a lithium-ion battery; a battery pack using the same; and a battery pack module. The thermal runaway suppression sheet is a sheet having a thickness of 3 mm or less and including a thermal energy consumption layer configured by a sheet of silica inorganic fibers having a hydroxyl group; and a heat dissipation layer in which in-plane thermal conductivity is 10-200 times greater than the thermal conductivity in the thickness direction. The present invention is thin and provides an excellent heat insulation effect because the heat dissipation layer conducts heat in the planar direction for localized heat production, allowing efficient use of the thermal energy consumption effect of the silica inorganic fibers in the thermal energy consumption layer.

Inventors:
IMAE KENJI (JP)
IMAE YOSHIHIKO (JP)
SHIRAI TAKASHI (JP)
ARAI TETSURO (JP)
Application Number:
PCT/JP2023/004680
Publication Date:
August 24, 2023
Filing Date:
February 13, 2023
Export Citation:
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Assignee:
IMAE IND CO LTD (JP)
International Classes:
H01M10/658; B32B5/02; D21H13/38; D21H13/40; F16L59/02; H01M10/6551
Domestic Patent References:
WO2019150939A12019-08-08
WO2021251017A12021-12-16
Foreign References:
JP2019083150A2019-05-30
JP2018179010A2018-11-15
JP2012084347A2012-04-26
US20210226189A12021-07-22
Attorney, Agent or Firm:
KAMITANI Eriko (JP)
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