公开(公告)号：US20200378058A1

公开(公告)日：2020-12-03

申请号：US16877046

申请日：2020-05-18

Applicant: Panasonic Intellectual Property Management Co., Ltd.

Inventor： KAZUMA OIKAWA ,  TOORU WADA ,  SHIGEKI SAKAGUCHI ,  TAKASHI KUBO ,  TAKASHI TSURUTA ,  SHIGEAKI SAKATANI ,  DAIDO KOMYOJI

IPC: D06M11/79 ,  H01M10/658 ,  H01M10/0525

Abstract: A manufacturing method of a heat insulating sheet of the present disclosure includes a composite generating step of impregnating a nonwoven fiber with a basic sol prepared to generate a composite of a hydrogel-nonwoven fiber, the basic sol being prepared by adding carbonate ester to a water glass composition; and a drying step of drying a liquid contained in the composite at a temperature lower than a critical temperature of the liquid and a pressure lower than a critical pressure of the liquid to remove the liquid from the composite. A heat insulating sheet according to the present disclosure includes an aerogel and a nonwoven fiber, and has a compression rate at 0.30 MPa to 5.0 MPa of 40% or less. In an electronic device of the present disclosure, the heat insulating sheet is disposed between an electronic component and a housing. In a battery unit of the present disclosure, the heat insulating sheet is disposed between batteries. This provides a heat insulating sheet that can be used under a high load and a manufacturing method thereof, and an electronic device and a battery unit including the same.