Flame resistant materials for electric vehicle battery applications
Assignee3M Innovative Properties Company
InventorsRobert H. Turpin, Mitchell T. Huang, Donald A. Gagnon
Life of this patent
Estimating the term…
Abstract
A flame resistant electrical insulating material comprises glass fibers, a particulate filler mixture, and an inorganic binder, wherein the electrical insulating material has a UL-94 flammability rating of V-0, 5VA and a thermal conductivity of less than 0.15 W/m-K. The particulate filler mixture comprises at least two particulate filler materials selected from the list of glass bubbles, kaolin clay, talc, mica, calcium carbonate, and alumina trihydrate. In an exemplary aspect, the insulating material is not punctured after direct exposure to 2054° C. (3730° F.) flame for at least 10 minutes.
Claims23
A flame resistant electrical insulating material comprising:
- glass fibers;
- a particulate filler mixture, wherein the particulate filler mixture comprises glass bubbles and kaolin clay;
- and
- an inorganic binder,
- wherein the insulating material has a UL-94 flammability rating of V-0, 5VA.
(canceled)
A flame resistant electrical insulating material comprising:
- glass fibers;
- a particulate filler mixture, wherein the particulate filler mixture comprises glass bubbles, mica and kaolin clay;
- and
- an inorganic binder,
- wherein the insulating material has a UL-94 flammability rating of V-0, 5VA.
(canceled)
A protective device, comprising:
- a flame resistant electrical insulating material comprising:
- glass fibers;
- a particulate filler mixture, wherein the particulate filler mixture comprises glass bubbles and kaolin clay;
- and
- an inorganic binder, wherein the flame resistant electrical insulating material has a UL-94 flammability rating of V-0, 5VA;
- wherein the flame resistant electrical insulating material is incorporated as part of a lithium ion battery cell, module or pack.
(canceled)
Dependencies are inferred from the claim text.