MONITORING SENSOR FOR SEALED SECONDARY BATTERY, SEALED SECONDARY BATTERY, AND MONITORING METHOD FOR SEALED SECONDARY BATTERY
First Claim
1. A monitoring sensor for a sealed secondary battery including a sealed outer casing and an electrode group accommodated hi an inside of the sealed outer casing, comprising:
- a polymer matrix layer that is disposed in the inside of the outer casing; and
a detection unit that is disposed on an outside of the 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. cm 2. The monitoring sensor for a sealed secondary battery according to claim 1, whereinthe polymer matrix layer contains a magnetic filler as the filler, andthe detection unit detects change in a magnetic field as the external field.
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Accused Products
Abstract
A monitoring sensor for a sealed secondary battery 1 including a sealed outer casing 21 and an electrode group 22 including a polymer matrix layer 3 that is disposed in the inside accommodated in the inside of the sealed outer casing 21, of the outer casing 21 and a detection unit 4 that is disposed on the outside of the outer casing 21, wherein the polymer matrix layer 3 contains a filler that is dispersed therein and that changes an external field in accordance with deformation of the polymer matrix layer 3, and the detection unit 4 detects change in the external field.
11 Citations
10 Claims
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1. A monitoring sensor for a sealed secondary battery including a sealed outer casing and an electrode group accommodated hi an inside of the sealed outer casing, comprising:
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a polymer matrix layer that is disposed in the inside of the outer casing; and a detection unit that is disposed on an outside of the outer casing, wherein the 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, and the detection unit detects change in the external field. cm 2. The monitoring sensor for a sealed secondary battery according to claim 1, wherein the polymer matrix layer contains a magnetic filler as the filler, and the detection unit detects change in a magnetic field as the external field. - View Dependent Claims (3, 4, 5, 6, 7, 8, 9, 10)
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Specification