To provide a voltage detector capable of accurately detecting a plurality of applied voltages.SOLUTION: A voltage detector 30 is applied to a power supply system comprising a battery pack 10 and a plurality of systems 21, 22 which are connected in parallel to the battery pack 10 and to each of which a voltage across terminals of the battery pack 10 is applied, the voltage detector detecting each of applied voltages applied to the respective systems. The voltage detector 30 comprises: a first voltage dividing circuit 40 for dividing each applied voltage according to two different voltage division ratios; and a monitoring IC 50 that has input channels CH3, CH5 set for the systems 21, 22, respectively, and detects each applied voltage on the basis of a difference between two divided voltages input to each of the input channels CH3, CH5. The first voltage dividing circuit 40 divides the applied voltages according to voltage division ratios different in a stepwise manner among input terminals S3, V3, S5, V5 and outputs the divided applied voltages.SELECTED DRAWING: Figure 1

    【課題】複数の印加電圧を精度よく検出することができる電圧検出装置を提供すること。【解決手段】電圧検出装置30は、組電池10と、組電池10に対して並列に接続され、組電池10の端子間電圧がそれぞれ印加される複数のシステム21,22と、を備えた電源システムに対して適用され、各システムに印加された印加電圧をそれぞれ検出するものである。電圧検出装置30は、各印加電圧をそれぞれ2つの異なる分圧比で分圧する第1分圧回路40と、各システム21,22ごとに入力チャネルCH3,CH5が設定されており、各入力チャネルCH3,CH5に入力された2つの分圧電圧の差分に基づいて、各印加電圧をそれぞれ検出する監視I50と、を備える。第1分圧回路40は、入力端子S3,V3,S5,V5ごとに、段階的に異なる分圧比で印加電圧を分圧して、出力する。【選択図】 図1


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    Title :

    VOLTAGE DETECTOR


    Additional title:

    電圧検出装置


    Contributors:

    Publication date :

    2021-10-11


    Type of media :

    Patent


    Type of material :

    Electronic Resource


    Language :

    Japanese


    Classification :

    IPC:    H02J CIRCUIT ARRANGEMENTS OR SYSTEMS FOR SUPPLYING OR DISTRIBUTING ELECTRIC POWER , Schaltungsanordnungen oder Systeme für die Abgabe oder Verteilung elektrischer Leistung / B60L PROPULSION OF ELECTRICALLY-PROPELLED VEHICLES , Antrieb von elektrisch angetriebenen Fahrzeugen / G01R Messen elektrischer Größen , MEASURING ELECTRIC VARIABLES / H01M Verfahren oder Mittel, z.B. Batterien, für die direkte Umwandlung von chemischer in elektrische Energie , PROCESSES OR MEANS, e.g. BATTERIES, FOR THE DIRECT CONVERSION OF CHEMICAL ENERGY INTO ELECTRICAL ENERGY



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