Title:
DEFORMATION DETECTION SENSOR FOR SEALED SECONDARY BATTERY AND SEALED SECONDARY BATTERY
Document Type and Number:
WIPO Patent Application WO/2018/078912
Kind Code:
A1
Abstract:
This deformation detection sensor for a sealed secondary battery comprises: a polymer matrix layer 3 attached to an exterior body 21 among members constituting a battery 2; a casing 11 sandwiching the exterior body 21 together with the polymer matrix layer 3; a spacer layer 6 sandwiched, along with the polymer matrix layer 3, between the exterior body 21 and the casing 11; and a detection unit 4 detecting a change in the external field arising in response to a deformation of the polymer matrix layer 3. In a planar view as viewed from the casing 11, when C is the surface area on a placement surface F3 of the exterior body 21 for attaching the polymer matrix layer 3 and the spacer layer 6, A is the contact surface area between the placement surface F3 and the polymer matrix layer 3, and B is the contact surface area between the placement surface F3 and the spacer layer 6, the relationship 0.15 ≤ (A + B)/C ≤ 1 is established.
Inventors:
MINAKATA NOBUYUKI (JP)
FUKUDA TAKESHI (JP)
FUKUDA TAKESHI (JP)
Application Number:
PCT/JP2017/014535
Publication Date:
May 03, 2018
Filing Date:
April 07, 2017
Export Citation:
Assignee:
TOYO TIRE & RUBBER CO (JP)
International Classes:
H01M10/48; G01D5/12; H01M50/105; H01M50/202; H01M50/291; H01M50/293; H01M50/569
Domestic Patent References:
| WO2016002454A1 | 2016-01-07 | |||
| WO2016135992A1 | 2016-09-01 | |||
| WO2015151332A1 | 2015-10-08 |
Foreign References:
| JP2015138649A | 2015-07-30 | |||
| JP2012195143A | 2012-10-11 | |||
| JP2016011859A | 2016-01-21 |
Attorney, Agent or Firm:
UNIUS PATENT ATTORNEYS OFFICE (JP)
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