To provide a vehicular battery system capable of reducing variations in battery voltages of multiple battery cells included in a battery pack even if it is not during normal charging.SOLUTION: A vehicular battery system comprises: multiple battery cells included in a battery pack; a solar panel which generates power capable of charging at least one battery cell among the multiple battery cells; a battery monitoring device including a voltage measurement section for measuring battery voltages of the multiple battery cells individually on a predetermined time basis, and an identification section for identifying a battery cell of a lowest battery voltage at that time point based on the battery voltages measured on the predetermined time basis by the voltage measurement section; and a changeover switch which is provided between the solar panel and the multiple battery cells and changes over a supply destination of power generated by the solar panel to the battery cell identified by the identification section.SELECTED DRAWING: Figure 3

    【課題】普通充電中でなくても、電池パックに含まれる複数の電池セルの電池電圧のばらつきを小さくできる車両用電池システムを提供する。【解決手段】車両用電池システムは、電池パックに含まれる複数の電池セルと、複数の電池セルのうち少なくとも一つの電池セルに充電可能な電力を発電するソーラーパネルと、複数の電池セルの電池電圧を予め定められた所定時間毎に個別に計測する電圧計測部と、電圧計測部によって所定時間毎に計測された電池電圧に基づいてその時点で最も電池電圧の小さな電池セルを特定する特定部と、を含む電池監視装置と、ソーラーパネルと複数の電池セルとの間に設けられ、ソーラーパネルによって発電された電力の供給先を特定部によって特定された電池セルに切り替える切替スイッチとを備える。【選択図】 図3


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    Title :

    VEHICULAR BATTERY SYSTEM


    Additional title:

    車両用電池システム


    Contributors:

    Publication date :

    2020-10-01


    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 / 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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