PROBLEM TO BE SOLVED: To provide a battery liquid temperature estimation device capable of improving the estimation accuracy of battery liquid temperature, compared with a conventional art.SOLUTION: A battery liquid temperature estimation device comprises: a temperature detector 31 that sequentially detects an atmosphere temperature in the vicinity of a battery 3; a vehicle velocity detector 41 that detects a vehicle velocity; an intake air temperature detector 21 that detects an intake air temperature of an engine 2; a filter time constant setting unit 42 that sets a filter time constant Kd for estimating a battery liquid temperature T on the basis of the vehicle velocity Vs detected by the vehicle velocity detector 41 and the intake air temperature Ti detected by the intake air temperature detector 21; and a battery liquid temperature estimation unit 43 that sequentially estimates the battery liquid temperature T on the basis of the temperature detection value t of the temperature detector 31 and the filter time constant Kd that is set by the filter time constant setting unit 42.

    【課題】従来と比較して、バッテリ液温の推定精度を向上させることができるバッテリ液温推定装置を提供すること。【解決手段】バッテリ液温推定装置は、バッテリ3の近傍の雰囲気温度を逐次的に検出する温度検出部31と、車速を検出する車速検出部41と、エンジン2の吸気温を検出する吸気温検出部21と、車速検出部41により検出された車速Vsと吸気温検出部21により検出された吸気温Tiとに基づいてバッテリ液温Tを推定するためのフィルタ時定数Kdを設定するフィルタ時定数設定部42と、温度検出部31の温度検出値tとフィルタ時定数設定部42により設定されたフィルタ時定数Kdとに基づいてバッテリ液温Tを逐次的に推定するバッテリ液温推定部43とを備える。【選択図】図1


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    Title :

    BATTERY LIQUID TEMPERATURE ESTIMATION DEVICE


    Additional title:

    バッテリ液温推定装置


    Contributors:

    Publication date :

    2015-12-07


    Type of media :

    Patent


    Type of material :

    Electronic Resource


    Language :

    Japanese


    Classification :

    IPC:    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 / B60R Fahrzeuge, Fahrzeugausstattung oder Fahrzeugteile, soweit nicht anderweitig vorgesehen , VEHICLES, VEHICLE FITTINGS, OR VEHICLE PARTS, NOT OTHERWISE PROVIDED FOR



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