PROBLEM TO BE SOLVED: To provide a charge state display device of secondary battery capable of reducing discomfort in displaying a charge rate of a secondary battery.SOLUTION: The charge state display device of secondary battery comprises: current detection means 2 for detecting an output current of a secondary battery; voltage detection means 3 for detecting a terminal voltage of the secondary battery; temperature detection means 4 for detecting a temperature of the secondary battery; charge rate estimation means 5 for calculating an estimated charge rate of the secondary battery; minimum level charge rate calculation means 6 for calculating a minimum level charge rate with which a vehicle can travel, based on the temperature of the secondary battery; correction means 7 for correcting the charge rate based on the minimum level charge rate so that, when the charge rate of the secondary battery lowers during travelling of the vehicle and a trouble occurs in travelling of the vehicle, the charge rate is calculated as a predetermined value irrespective of the temperature of the secondary battery; display charge rate determination means 8 for determining a display charge rate to be displayed on display means 10 based on the charge rate and the corrected charge rate; and display control means 9 for controlling the display charge rate determined by the display charge rate determination means to be displayed on the display means 10.SELECTED DRAWING: Figure 1

    【課題】二次電池の充電率の表示について違和感を軽減することのできる二次電池の充電状態表示装置を提供する。【解決手段】二次電池の出力電流を検出する電流検出手段2と、二次電池の端子電圧を検出する電圧検出手段3と、二次電池の温度を検出する温度検出手段4と、二次電池の推定充電率を算出する充電率推定手段5と、二次電池の温度に基いて、車両が走行可能な最小レベル充電率を算出する最小レベル充電率算出手段6と、車両の走行中に二次電池の充電率が低下し、走行に支障が生じ始めた際に、二次電池の温度に関わらず充電率が予め設定した所定値として算出されるように、最小レベル充電率に基いて充電率を補正する補正手段7と、充電率と補正後の充電率に基いて、表示手段に表示する表示用充電率を決定する表示充電率決定手段8と、表示充電率決定手段で決定された表示用充電率を表示手段10に表示するように制御する表示制御手段9とを有する。【選択図】図1


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    Title :

    CHARGE STATE DISPLAY DEVICE OF SECONDARY BATTERY


    Additional title:

    二次電池の充電状態表示装置


    Contributors:

    Publication date :

    2016-05-30


    Type of media :

    Patent


    Type of material :

    Electronic Resource


    Language :

    Japanese


    Classification :

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