BATTERY SYSTEM MONITORING DEVICE

• Main Authors: EMORI AKIHIKO, KUDO AKIHIKO, KIKUCHI MUTSUMI, MACHIDA AKIHIRO, YAMAUCHI TATSUMI
• Format: Patent
• Language: English; Japanese
• Published: 05.01.2017
• Subjects: BASIC ELECTRIC ELEMENTS; CIRCUIT ARRANGEMENTS OR SYSTEMS FOR SUPPLYING OR DISTRIBUTINGELECTRIC POWER; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER; ELECTRIC EQUIPMENT OR PROPULSION OF ELECTRICALLY-PROPELLEDVEHICLES; ELECTRICITY; ELECTRODYNAMIC BRAKE SYSTEMS FOR VEHICLES, IN GENERAL; GENERATION; MAGNETIC SUSPENSION OR LEVITATION FOR VEHICLES; MEASURING; MEASURING ELECTRIC VARIABLES; MEASURING MAGNETIC VARIABLES; PERFORMING OPERATIONS; PHYSICS; PROCESSES OR MEANS, e.g. BATTERIES, FOR THE DIRECT CONVERSIONOF CHEMICAL INTO ELECTRICAL ENERGY; SYSTEMS FOR STORING ELECTRIC ENERGY; TESTING; TRANSPORTING; VEHICLES IN GENERAL

PROBLEM TO BE SOLVED: To provide a battery system monitoring device comprising a cell group in which a plurality of unit battery cells are connected in series.SOLUTION: A battery system monitoring device comprises: a second control device which controls discharge of a plurality of unit battery cells; a plurality of voltage detection lines connecting positive electrodes and negative electrodes of the unit battery cells and a first control device and provided for inputting inter-terminal voltages of the unit battery cells to the first control device; a first resistor 202 provided in series to the plurality of voltage detection lines; a first capacitors 203 connected between the voltage detection lines connected to the positive electrodes and the negative electrodes of the unit battery cells; a plurality of balancing lines branched from the voltage detection lines and connected to the second control device; a second resistor 201 provided in series to the plurality of balancing lines; a second capacitor 204 connected between the balancing lines branched from the voltage detection lines connected to the positive electrodes and the negative electrodes of the unit battery cells; and a balancing switch 222 which is turned on and turned off when discharging the unit battery cell.SELECTED DRAWING: Figure 5 【課題】複数の単電池セルが直列接続されたセルグループを有する電池システム監視装置を提供する。【解決手段】複数の単電池セルの放電を制御する第２の制御装置と、各単電池セルの正極及び負極のそれぞれと第１の制御装置とを接続し、各単電池セルの端子間電圧を第１の制御装置に入力するために設けられた複数の電圧検出線と、複数の各電圧検出線に直列に設けられた第１の抵抗２０２と、各単電池セルの正極及び負極のそれぞれに接続された電圧検出線間に接続された第１のコンデンサ２０３と、各電圧検出線から分岐し、第２の制御装置に接続された複数のバランシング線と、複数のバランシング線に直列に設けられた第２の抵抗２０１と、各単電池セルの正極及び負極のそれぞれに接続された電圧検出線から分岐したバランシング線間に接続された第２のコンデンサ２０４と、当該単電池セルの放電時にオンオフされるバランシングスイッチ２２２と、を有する。【選択図】図５