To provide a device for estimating the state of degradation of a secondary battery that can accurately estimate the state of degradation of a secondary battery by considering the degree of degradation.SOLUTION: An ECU 11, which estimates the state of degradation of a secondary battery 12 equipped in an electric vehicle with a first travel mode 31 and a second travel mode 32, includes: an estimation unit 22 for estimating the state of degradation of the secondary battery 12; and a correction unit 23 for correcting an SOH estimated by the estimation unit 22 according to the ratio of the first travel mode 31 and the second travel mode 32.SELECTED DRAWING: Figure 1

    【課題】劣化の度合いを考慮することにより二次電池の劣化状態を高精度に推定することが可能な二次電池の劣化状態推定装置を提供する。【解決手段】第1走行モード31と、第2走行モード32と、を有する電動車両に搭載される二次電池12の劣化状態を推定するECU11は、二次電池12の劣化状態を推定する推定部22と、第1走行モード31と、第2走行モード32との比率に応じて、推定部22により推定されるSOHを補正する補正部23と、備える。【選択図】図1


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    Title :

    DEVICE FOR ESTIMATING STATE OF DEGRADATION OF SECONDARY BATTERY


    Additional title:

    二次電池の劣化状態推定装置


    Contributors:

    Publication date :

    2019-07-11


    Type of media :

    Patent


    Type of material :

    Electronic Resource


    Language :

    Japanese


    Classification :

    IPC:    G01R Messen elektrischer Größen , MEASURING ELECTRIC VARIABLES / 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 / 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 / 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 / H02J CIRCUIT ARRANGEMENTS OR SYSTEMS FOR SUPPLYING OR DISTRIBUTING ELECTRIC POWER , Schaltungsanordnungen oder Systeme für die Abgabe oder Verteilung elektrischer Leistung



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