METHOD OF MANUFACTURING LITHIUM-ION SECONDARY BATTERY AND METHOD OF EVALUATING LITHIUM-ION SECONDARY BATTERY

METHOD OF MANUFACTURING LITHIUM-ION SECONDARY BATTERY AND METHOD OF EVALUATING LITHIUM-ION SECONDARY BATTERY

A method of manufacturing a lithium-ion secondary battery of the present invention includes at least four steps as follows: an initial charging step of charging the lithium-ion secondary battery, which has not been subjected to initial charging, under a temperature environment ranging of equal to or...

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Hauptverfasser: IWATA, Naoyuki, ENOMOTO, Shinsuke, ICHIKAWA, Tomoyuki
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 IWATA, Naoyuki
ENOMOTO, Shinsuke
ICHIKAWA, Tomoyuki
description A method of manufacturing a lithium-ion secondary battery of the present invention includes at least four steps as follows: an initial charging step of charging the lithium-ion secondary battery, which has not been subjected to initial charging, under a temperature environment ranging of equal to or higher than −20° C. and equal to or lower than 15° C.; an aging step of leaving the lithium-ion secondary battery under a temperature environment ranging of equal to or higher than 30° C. and equal to or lower than 80° C. after the initial charging step; a short circuit detecting step of detecting the presence or absence of a short circuit of the lithium-ion secondary battery by measuring a voltage drop quantity of the lithium-ion secondary battery and comparing the voltage drop quantity with a reference value; and a sorting step of sorting out a lithium-ion secondary battery in which no short circuit is detected.
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subjects BASIC ELECTRIC ELEMENTS
ELECTRICITY
PROCESSES OR MEANS, e.g. BATTERIES, FOR THE DIRECT CONVERSIONOF CHEMICAL INTO ELECTRICAL ENERGY
title METHOD OF MANUFACTURING LITHIUM-ION SECONDARY BATTERY AND METHOD OF EVALUATING LITHIUM-ION SECONDARY BATTERY
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