BATTERY CONTROL DEVICE

• Main Authors: KUBO KENJI, EMORI AKIHIKO, KUDO AKIHIKO, KIKUCHI MUTSUMI
• Format: Patent
• Language: English; Japanese
• Published: 18.10.2018
• 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 more reliable battery control device.SOLUTION: An integrated circuit of a battery system includes: a multiplexer 120 for selecting a terminal voltage of battery cells BC1 to BC4 that are a measuring object from an input terminal voltage; a pull-up circuit for pulling up an output voltage output from the multiplexer 120 to a higher potential side; and a diagnosis circuit 160 for diagnosing abnormality of the multiplexer 120 by comparing a voltage measured in a state where the output voltage from the multiplexer 120 is pulled up with a prescribed threshold value when all the switches of the multiplexer 120 are made to be an open state.SELECTED DRAWING: Figure 37 【課題】より信頼性の高い電池制御装置の提供。【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測定対象である電池セルＢＣ１〜ＢＣ４の端子電圧を選択するマルチプレクサ１２０と、マルチプレクサ１２０から出力された出力電圧をそれよりも高電位側にプルアップするプルアップ回路と、マルチプレクサ１２０のスイッチをすべて開状態としたときに、マルチプレクサ１２０からの出力電圧がプルアップされた状態で計測された電圧と所定の閾値とを比較して、マルチプレクサ１２０の異常を診断する診断回路１６０と、を有する。【選択図】図３７