To determine a degradation degree of a secondary battery with improved accuracy.SOLUTION: A secondary battery degradation degree determination device determines a degradation degree of a secondary battery of a hybrid vehicle comprising an engine outputting power for traveling, a motor outputting power for traveling and the secondary battery capable of exchanging electric power with the motor. The secondary battery degradation degree determination device has a determination section which determines the degradation degree of the secondary battery on the basis of a first relation, which is a relation between an operation point and a load of the secondary battery when the engine is operated at the operation point, set by using the operation point defined by a rotation speed and a loading rate of the engine and an opening of an accelerator.SELECTED DRAWING: Figure 8

    【課題】二次電池の劣化度合いをより精度よく判定する。【解決手段】走行用の動力を出力するエンジンと、走行用の動力を出力するモータと、モータと電力をやりとり可能な二次電池と、を備えるハイブリッド車両の二次電池の劣化の度合いを判定する二次電池の劣化度合い判定装置であって、エンジンの回転数とエンジンの負荷率とからなる運転ポイントとアクセル開度とを用いて設定される、運転ポイントと運転ポイントでエンジンを運転したときの二次電池の負荷との関係である第1関係に基づいて、二次電池の劣化度合いを判定する判定部を備える。【選択図】図8


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    Title :

    SECONDARY BATTERY DEGRADATION DEGREE DETERMINATION DEVICE


    Additional title:

    二次電池の劣化度合い判定装置


    Contributors:

    Publication date :

    2021-12-27


    Type of media :

    Patent


    Type of material :

    Electronic Resource


    Language :

    Japanese


    Classification :

    IPC:    B60W CONJOINT CONTROL OF VEHICLE SUB-UNITS OF DIFFERENT TYPE OR DIFFERENT FUNCTION , Gemeinsame Steuerung oder Regelung von Fahrzeug-Unteraggregaten verschiedenen Typs oder verschiedener Funktion / B60K Anordnung oder Einbau von Antriebseinheiten oder von Kraft- bzw. Drehmomentübertragungen in Fahrzeugen , ARRANGEMENT OR MOUNTING OF PROPULSION UNITS OR OF TRANSMISSIONS IN VEHICLES / 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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