Nonaqueous electrolyte secondary battery

摘要

In one embodiment, a nonaqueous electrolyte secondary battery includes an electrode group, a battery container, an insulation member, and a nonaqueous electrolyte solution. The electrode group includes a positive electrode, a negative electrode and a separator disposed between the positive electrode and the negative electrode. The insulation member, which insulates the positive electrode and the negative electrode from the battery container and absorbs vibration, includes a resin and an inorganic material and has a bending elastic modulus between 600 MPa and 1,500 MPa, a specific heat between 0.25 cal/° C.·g and 0.40 cal/° C.·g, and a thermal conductivity between 0.3 W/m·K and 0.6 W/m·K.

主权项

1. A nonaqueous electrolyte secondary battery comprising:
an electrode group comprising a positive electrode, a negative electrode and a separator disposed between the positive electrode and the negative electrode; a battery container in which the electrode group is accommodated; an insulation member which insulates the positive electrode and the negative electrode from the battery container and absorbs vibration; and a nonaqueous electrolyte solution in which the electrode group accommodated in the battery container is immersed, wherein the insulation member comprises a resin and an inorganic material, the insulation member having a bending elastic modulus of 600 MPa or more and 1,500 MPa or less, a specific heat of 0.25 cal/° C.·g or more and 0.40 cal/° C.·g or less, and a thermal conductivity of 0.3 W/m·K or more and 0.6 W/m·K. or less.