CAPACITY RECOVERY DEVICE, MANUFACTURING METHOD OF SECONDARY BATTERY, CAPACITY RECOVERY METHOD, AND SECONDARY BATTERY SYSTEM

• Main Authors: SUGIMASA MASATOSHI, HIROOKA MASAYUKI, ITO SHOTA, SEKI EIJI, MOTOKURA KOHEI, KAWAJI JUN
• Format: Patent
• Language: English; Japanese
• Published: 27.09.2021
• 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 further improve an accumulation battery capacity which can be used until life of a secondary battery.SOLUTION: A capacity recovery device 350 comprises: a capacity recovery processing part 510 that performs a capacity recovery of a secondary battery 300 in which the secondary battery 300 has a positive electrode terminal connected to a positive electrode, a negative electrode terminal connected to a negative electrode including a negative electrode opposite part opposite to the positive electrode and a negative electrode non-opposite part as the other part, and a capacity recovery electrode terminal connected to a capacity recovery electrode moving reactive species to the positive electrode or the negative electrode, by moving the reactive species from the capacity recovery electrode to the positive electrode or the negative electrode; and an electric amount calculation part 504 that calculates a conductive electric amount as an electric amount to be conducted on the basis of at least one kind of parameter selected from the battery capacity of the secondary battery 300, a capacity of the negative electrode non-opposite part, a capacity maintenance ratio determining that the secondary battery reaches life, and a recovery efficiency. The capacity recovery processing part 510 comprises an electric amount monitoring part 512 moving the reactive species from the capacity recovery electrode to the positive electrode or the negative electrode.SELECTED DRAWING: Figure 3 【課題】二次電池の寿命までに使用できる累積電池容量をより高める。【解決手段】容量回復装置３５０は、正極に接続された正極端子と正極に対向する負極対向部とそれ以外の部分である負極非対向部とを有する負極に接続された負極端子と正極または負極に反応種を移動させる容量回復極に接続された容量回復極端子とを備える二次電池３００の、容量回復極から正極または負極に反応種を移動させることによって、二次電池３００の容量回復を行う容量回復処理部５１０と、二次電池３００の電池容量と、負極非対向部の容量と、二次電池の寿命に達したと判定する容量維持率と、回復効率と、から選択される少なくとも１種以上のパラメータに基づいて通電すべき電気量である通電電気量を算出する電気量算出部５０４と、を備え、容量回復処理部５１０は、反応種を容量回復極から正極または負極に移動させる電気量監視部５１２を備える。【選択図】図３