PROBLEM TO BE SOLVED: To provide a power storage device capable of accurately determining the state of two capacitors.SOLUTION: The power storage device includes a first capacitor, a second capacitor, a converter for converting at least one of an output voltage of the first capacitor and an output voltage of the second capacitor, a detection unit that detects a voltage of the first capacitor and a current flowing between the first capacitor and the second capacitor, an acquiring unit that acquires respective temperatures of the first capacitor and the second capacitor, and a control unit for controlling the converter. The control unit performs a first constant current control of controlling the converter so that a constant current flows from one of the first capacitor and the second capacitor to the other of the first capacitor and the second capacitor. The state of the first capacitor is determined based on the voltage of the first capacitor and the constant current obtained when performing the first constant current control. If the temperature of the first capacitor or the second capacitor before the determination is equal to or less than the threshold value, after raising the temperature of the first capacitor and the second capacitor to a temperature higher than the threshold value, the first constant current control and the determination are performed.SELECTED DRAWING: Figure 5

    【課題】2つの蓄電器の状態を正確に判定可能な蓄電装置を提供すること。【解決手段】蓄電装置は、第1蓄電器と、第2蓄電器と、第1蓄電器の出力電圧及び第2蓄電器の出力電圧の少なくとも一方を変換する変換部と、第1蓄電器の電圧と、第1蓄電器と第2蓄電器の間を流れる電流とを検知する検知部と、第1蓄電器及び第2蓄電器の各温度を取得する取得部と、変換部を制御する制御部とを備える。制御部は、第1蓄電器及び第2蓄電器の一方から第1蓄電器及び第2蓄電器の他方へ一定電流が流れるよう変換部を制御する第1定電流制御を行い、第1定電流制御を行った際に得られた第1蓄電器の電圧及び上記一定電流に基づき、第1蓄電器の状態を判定し、当該判定前の第1蓄電器又は第2蓄電器の温度がしきい値以下であれば、第1蓄電器及び第2蓄電器をしきい値より高い温度まで昇温した後、第1定電流制御及び上記判定を行う。【選択図】図5


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    Title :

    POWER STORAGE DEVICE, TRANSPORTATION DEVICE AND CONTROL METHOD


    Additional title:

    蓄電装置、輸送機器及び制御方法


    Contributors:

    Publication date :

    2017-05-18


    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 / G01R Messen elektrischer Größen , MEASURING ELECTRIC VARIABLES / 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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