Title:
Deformation detection sensor for closed-type secondary batteries and their manufacturing methods, closed-type secondary batteries, and deformation detection methods for closed-type secondary batteries
Document Type and Number:
Japanese Patent JP6310806
Kind Code:
B2
Abstract:
PROBLEM TO BE SOLVED: To provide a hermetic secondary battery deformation detection sensor, a hermetic secondary battery deformation detection sensor manufacturing method, a hermetic secondary battery, and a hermetic secondary battery deformation detection method, capable of detecting only a large deformation noticed at an abnormal time with high sensitivity without sensing a small deformation noticed at a normal time.SOLUTION: A hermetic secondary battery deformation detection sensor comprises: a polymer matrix layer; and a detection unit, the polymer matrix layer containing a filler dispersed therein and changing an external field in response to a deformation in the polymer matrix layer, the detection unit detecting a change in the external field, and Y/X≥5 is satisfied, where X denotes a change amount of the external field applied when the polymer matrix layer has a 2.5% distortion, and Y denotes a change amount of the external field applied when the polymer matrix layer has a 10% distortion.SELECTED DRAWING: Figure 2
Inventors:
Fukuda Takeshi
Takahiro Ota
Takahiro Ota
Application Number:
JP2014155433A
Publication Date:
April 11, 2018
Filing Date:
July 30, 2014
Export Citation:
Assignee:
TOYO TIRE & RUBBER CO.,LTD.
International Classes:
G01B7/24; H01M2/10; H01M10/48
Domestic Patent References:
| JP2012234629A | ||||
| JP201498687A |
Foreign References:
| US20140251023 |
Attorney, Agent or Firm:
Patent Business Corporation Unias International Patent Office