THERMAL INSULATION MATERIAL FOR BATTERY PACK, AND BATTERY PACK

WIPO Patent Application WO/2021/181951

A1

A thermal insulation material (3) for a battery pack comprises a thermal insulation layer (30), and a first substrate (31) and a second substrate (32) that are positioned sandwiching the thermal insulation layer (30). The thermal insulation layer (30) has a mass reduction rate of 10% or less in a thermogravimetric analysis in which the same is held at 500°C or less for 30 minutes, and has a porous structure, reinforcing fibers, and nanoparticles of a metal oxide serving as a binder, said porous structure having a plurality of particles linked to form a skeleton therein, having fine pores in the interior thereof, and among the surface and the interior thereof, having a hydrophobic site at least on the surface. When the thermal insulation material (3) for a battery pack is subjected to a compression test in which the same is compressed under a load of 15 MPa in a thickness direction, where said thickness direction is the layering direction of the thermal insulation layer (30), the first substrate (31), and the second substrate (32), the change rate of the post-compression test thickness in relation to the pre-compression test thickness is less than 70%.

KATAYAMA NAOKI (JP)
KUMAGAI SHINJI (JP)
HAYASHI SHOTA (JP)
TAGUCHI YUTARO (JP)
SHINTAKU YUJI (JP)

PCT/JP2021/003867

September 16, 2021

February 03, 2021

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SUMITOMO RIKO CO LTD (JP)
TOYOTA MOTOR CO LTD (JP)

H01M10/651; F16L59/02; H01M10/653; H01M10/6555; H01M10/658; H01M50/20

WO2019107560A1	2019-06-06
WO2012050035A1	2012-04-19
WO2013141189A1	2013-09-26

JP2002267092A	2002-09-18
JP2012145204A	2012-08-02

HIGASHIGUCHI Michiaki et al. (JP)

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