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Monitoring sensor including a polymer matrix for monitoring a sealed secondary battery, sealed secondary battery including the monitoring sensor, and monitoring method for sealed secondary battery

  • US 10,230,136 B2
  • Filed: 04/09/2015
  • Issued: 03/12/2019
  • Est. Priority Date: 06/27/2014
  • Status: Expired due to Fees
First Claim
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1. A monitoring sensor for a sealed secondary battery including a sealed outer casing and an electrode group accommodated in an inside of the sealed outer casing, comprising:

  • a polymer matrix layer that is disposed in the inside of the sealed outer casing; and

    a detection unit that is disposed on an outside of the sealed outer casing, whereinthe polymer matrix layer contains a filler that is dispersed therein and that changes an external field in accordance with deformation of the polymer matrix layer, andthe detection unit detects change in the external field.

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