MANUFACTURING METHOD OF BATTERY

• Main Authors: KITAYOSHI MASANORI, OTSUKI YASUAKI
• Format: Patent
• Language: English; Japanese
• Published: 16.04.2020
• Subjects: BASIC ELECTRIC ELEMENTS; CIRCUIT ARRANGEMENTS OR SYSTEMS FOR SUPPLYING OR DISTRIBUTINGELECTRIC POWER; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER; ELECTRICITY; GENERATION; PROCESSES OR MEANS, e.g. BATTERIES, FOR THE DIRECT CONVERSIONOF CHEMICAL INTO ELECTRICAL ENERGY; SYSTEMS FOR STORING ELECTRIC ENERGY

To provide a manufacturing method of a battery capable of shortening a recharge time of an initial charge step further than that in the case of CCCV charge while preventing an initial charge terminal open-circuit voltage from being varied for each battery.SOLUTION: A manufacturing method of a battery 1 includes an initial charge step S2. The initial charge step S2 includes: a first CC charge step S21 of charging the battery 1 by CC charging at a first charge current value Ia1 which is constant until a first inter-terminal voltage Vb1 is reached; a Q1 acquisition step S22 of calculating a first charge electricity quantity Q1 charging the battery 1 in the first CC charge step S21; a Q2 acquisition step S23 of calculating a second charge electricity quantity Q2 further required for setting the battery 1 at an initial charge terminal open-circuit voltage Vae on the basis of the first charge electricity quantity Q1; and a second CC charge step 24 of charging the battery 1 with the second charge electricity quantity Q2 by performing the CC charging.SELECTED DRAWING: Figure 2 【課題】初充電端子開放電圧が電池毎にバラつくことを防止しながらも、初充電工程の充電時間をＣＣＣＶ充電の場合よりも短縮できる電池の製造方法を提供すること。【解決手段】電池１の製造方法は、初充電工程Ｓ２を備え、初充電工程Ｓ２は、第１端子間電圧Ｖｂ１になるまで一定の第１充電電流値Ｉａ１でのＣＣ充電により電池１を充電する第１ＣＣ充電工程Ｓ２１と、第１ＣＣ充電工程Ｓ２１で当該電池１に充電した第１充電電気量Ｑ１を求めるＱ１取得工程Ｓ２２と、第１充電電気量Ｑ１に基づいて当該電池１を初充電端子開放電圧Ｖａｅとするのに更に必要な第２充電電気量Ｑ２を求めるＱ２取得工程Ｓ２３と、ＣＣ充電を行って第２充電電気量Ｑ２を当該電池１に充電する第２ＣＣ充電工程Ｓ２４とを有する。【選択図】図２