BATTERY SYSTEM MONITORING DEVICE

• Main Authors: EMORI AKIHIKO, KUDO AKIHIKO, KIKUCHI MUTSUMI, MACHIDA AKIHIRO, YAMAUCHI TATSUMI
• Format: Patent
• Language: English; Japanese
• Published: 14.02.2019
• 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

To provide a battery system monitoring device which monitors a battery system with a cell group that is a plurality of unit battery cells connected in series.SOLUTION: A first control device controlling a cell group, and a plurality of voltage detection lines connecting the first control device and a positive electrode and a negative electrode of a unit battery cell respectively for measuring an inter-terminal voltage of the unit battery cell are provided. The first control device has a balancing switch for performing a balancing discharge of the unit battery cell connected between the voltage detection line connected to the positive electrode of the unit battery cell and the voltage detection line connected to the negative electrode per unit battery cell.SELECTED DRAWING: Figure 5 【課題】本発明は複数の単電池セルを直列接続したセルグループを備えた電池システムを監視する、電池システム監視装置である。【解決手段】セルグループを制御する第１の制御装置と、単電池セルの端子間電圧を測定するための、単電池セルの正極および負極のそれぞれと第１の制御装置とを接続する複数の電圧検出線とを備える。第１の制御装置は、単電池セルの正極に接続された電圧検出線と負極に接続された電圧検出線の間に接続された、この単電池セルのバランシング放電を行うバランシングスイッチを単電池セル毎に備える。【選択図】図５