BATTERY SYSTEM AND BATTERY MONITORING DEVICE

• Main Authors: KUBO KENJI, EMORI AKIHIKO, KUDO AKIHIKO, KIKUCHI MUTSUMI
• Format: Patent
• Language: English; Japanese
• Published: 24.11.2016
• 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 having higher reliability.SOLUTION: The integrated circuit of the battery system has a multiplexer 120 for selectively outputting terminal voltages of battery cells BC1-BC4 that are objects to be measured from an inputted terminal voltage, and an analog-digital converter 122A for converting a terminal voltage selected by the multiplexer 120 from analog to digital, and further has a selection circuit 2592 for outputting a selection signal for selecting the terminal voltages of battery cells BC1-BC4 that are the objects to be measured to the multiplexer 120 so that the selection operation of the multiplexer 120 is executed, and a diagnostic circuit 2596 for diagnosing whether the selection signal outputted from the selection circuit 2592 is correct or not.SELECTED DRAWING: Figure 42 【課題】より信頼性の高い電池システムの提供。【解決手段】電池システムの集積回路は、入力された端子電圧から計測対象である電池セルＢＣ１〜ＢＣ４の端子電圧を選択して出力するマルチプレクサ１２０と、マルチプレクサ１２０により選択された端子電圧をアナログデジタル変換するアナログデジタル変換器１２２Ａと、を有し、マルチプレクサ１２０の選択動作が実行されるように、測定対象となる電池セルＢＣ１〜ＢＣ４の端子電圧を選択させる選択信号をマルチプレクサ１２０に出力する選択回路２５９２と、選択回路２５９２から出力される選択信号が正しいか否かを診断する診断回路２５９６と、を有する。【選択図】図４２