公开(公告)号：US20190249979A1

公开(公告)日：2019-08-15

申请号：US16333328

申请日：2017-04-07

Applicant: TOYO TIRE CORPORATION

Inventor： Nobuyuki Minakata ,  Takeshi Fukuda

IPC: G01B7/24 ,  H01M10/48

CPC classification number: G01B7/24 ,  G01D5/12 ,  H01M2/02 ,  H01M10/48

Abstract: This deformation detection sensor for a sealed secondary battery comprises: a polymer matrix layer attached to an exterior body among members constituting a battery; a casing sandwiching the exterior body together with the polymer matrix layer; a spacer layer sandwiched, along with the polymer matrix layer, between the exterior body and the casing; and a detection unit detecting a change in the external field arising in response to a deformation of the polymer matrix layer. When C is the surface area on a placement surface of the exterior body for attaching the polymer matrix layer and the spacer layer, A is the contact surface area between the placement surface and the polymer matrix layer, and B is the contact surface area between the placement surface and the spacer layer, the relationship 0.15≤(A+B)/C≤1 is established.