The invention provides a power storage device, a power storage system, an internal resistance estimation method, and a computer program. A power storage device includes a power storage element and a management unit. The management unit reduces the SOC of the power storage element by discharging the power storage element, acquires the current and voltage of the power storage element during a period in which the SOC of the power storage element is within a predetermined SOC range during a process in which the SOC of the power storage element is increased by charging the power storage element, and controls the current and voltage of the power storage element during the period in which the SOC of the power storage element is within the predetermined SOC range. The internal resistance of the power storage element is calculated on the basis of the acquired current and voltage. The SOC range is a range in which the change in the voltage of the power storage element is larger relative to the change in the SOC of the power storage element than a range in which the value of the SOC is larger than the SOC range.

    本发明提供一种蓄电装置、蓄电系统、内部电阻推定方法以及计算机程序。蓄电装置具备蓄电元件和管理部。所述管理部通过使所述蓄电元件放电来使所述蓄电元件的SOC下降,在通过使所述蓄电元件充电来使所述蓄电元件的SOC上升的过程中,获取所述蓄电元件的SOC处于给定的SOC范围内的期间的所述蓄电元件的电流以及电压,基于获取到的电流以及电压,计算所述蓄电元件的内部电阻。所述SOC范围是下述范围:相比于SOC的值大于所述SOC范围的范围,与所述蓄电元件的SOC的变化相对的所述蓄电元件的电压的变化大的范围。


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    Title :

    Power storage device, power storage system, internal resistance estimation method, and computer program


    Additional title:

    蓄电装置、蓄电系统、内部电阻推定方法以及计算机程序


    Contributors:

    Publication date :

    2023-04-28


    Type of media :

    Patent


    Type of material :

    Electronic Resource


    Language :

    Chinese


    Classification :

    IPC:    B60L PROPULSION OF ELECTRICALLY-PROPELLED VEHICLES , Antrieb von elektrisch angetriebenen Fahrzeugen




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