BATTERY PACK SYSTEM AND ENERGY STORAGE SYSTEM

• Main Authors: ITO TOMOMICHI, HATAKEYAMA TOMOYUKI, YAMAUCHI SUSUMU
• Format: Patent
• Language: English; Japanese
• Published: 08.03.2023
• Subjects: BASIC ELECTRIC ELEMENTS; CIRCUIT ARRANGEMENTS OR SYSTEMS FOR SUPPLYING OR DISTRIBUTINGELECTRIC POWER; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER; ELECTRICITY; EMERGENCY PROTECTIVE CIRCUIT ARRANGEMENTS; GENERATION; PROCESSES OR MEANS, e.g. BATTERIES, FOR THE DIRECT CONVERSIONOF CHEMICAL INTO ELECTRICAL ENERGY; SYSTEMS FOR STORING ELECTRIC ENERGY

To suppress a high voltage from being applied to a battery cell with an electric current cut-off without need for using a DCC converter.SOLUTION: A battery pack system 10 includes a plurality of basic battery units 60 each including a plurality of battery cells 41 connected in series and charged by an electric current supplied from a power supply, where the plurality of basic battery units 60 are connected in parallel to form one or a plurality of battery groups 61. Each of the plurality of battery cells 41 includes current cutoff means which cuts off an electric current running through between electrodes of the battery cells 41. The number of series of the plurality of battery cells 41 connected in series to the basic battery units 60 is determined on the basis of the number of parallels of the basic battery units 60, a current It supplied from a power source and resistance components R of the battery cells 41.SELECTED DRAWING: Figure 6 【課題】ＤＣＤＣコンバータを使用せず、電流を遮断した電池セルに高電圧が印加されるのを抑制する。【解決手段】組電池システム１０は、電源から供給される電流によって充電される複数の電池セル４１が直列に接続された基本電池ユニット６０を複数有し、複数の基本電池ユニット６０を並列に接続した１又は複数の電池群６１を備える組電池システム１０であって、複数の電池セル４１の各々は、電池セル４１の電極間を流れる電流を遮断する電流遮断手段を有し、基本電池ユニット６０の直列に接続された複数の電池セル４１の直列数は、基本電池ユニット６０の並列数、電源から供給される電流It、及び、電池セル４１の抵抗成分Ｒに基づいて、決定される。【選択図】図６