NONAQUEOUS ELECTROLYTE SECONDARY BATTERY

NONAQUEOUS ELECTROLYTE SECONDARY BATTERY

A nonaqueous electrolyte secondary battery is disclosed including a flat electrode body in which an electrode group including a positive electrode plate, a negative electrode plate, and a separator interposed therebetween is rolled, a nonaqueous electrolyte, and an outer jacket member. The electrode...

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Hauptverfasser: Kasamatsu, Shinji, Ichikawa, Yuta
Format: Patent
Sprache:eng
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BASIC ELECTRIC ELEMENTS
ELECTRICITY
PROCESSES OR MEANS, e.g. BATTERIES, FOR THE DIRECT CONVERSIONOF CHEMICAL INTO ELECTRICAL ENERGY
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creator Kasamatsu, Shinji
Ichikawa, Yuta
description A nonaqueous electrolyte secondary battery is disclosed including a flat electrode body in which an electrode group including a positive electrode plate, a negative electrode plate, and a separator interposed therebetween is rolled, a nonaqueous electrolyte, and an outer jacket member. The electrode body includes bent portions, in which an electrode group is bent, at both end portions in the major axis direction of a cross section perpendicular to a rolling axis. A resin tape is attached to a portion, which is arranged nearest the rolling start position of the positive electrode plate, of the roll inner surface of the positive electrode mix layer in the bent portion. The resin tape includes an adhesive layer and a base material layer that does not pass lithium ions. An adhesive force of the resin tape to the positive electrode mix layer is 0.1 N/cm or more and 2 N/cm or less.
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The electrode body includes bent portions, in which an electrode group is bent, at both end portions in the major axis direction of a cross section perpendicular to a rolling axis. A resin tape is attached to a portion, which is arranged nearest the rolling start position of the positive electrode plate, of the roll inner surface of the positive electrode mix layer in the bent portion. The resin tape includes an adhesive layer and a base material layer that does not pass lithium ions. 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subjects BASIC ELECTRIC ELEMENTS
ELECTRICITY
PROCESSES OR MEANS, e.g. BATTERIES, FOR THE DIRECT CONVERSIONOF CHEMICAL INTO ELECTRICAL ENERGY
title NONAQUEOUS ELECTROLYTE SECONDARY BATTERY
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