An electric tractor is provided with a vehicle body, a work machine, a motor, a battery, and a converter for controlling the input/output power of the battery. The electric tractor is provided with a control device which uses the converter as a control object. The control device executes a limiting process, a state of charge calculation process, and a mitigation process. In the limiting process, when the state of the battery satisfies a limiting condition, the control device controls the converter so as to limit the input/output of the battery within a predetermined power range. In the state of charge calculation process, the control device calculates, as an estimated state of charge, the state of charge of the battery when it is assumed that the work is completed in the farm. In the mitigation process, when the estimated state of charge is greater than the first predetermined state of charge, the control device expands the predetermined power range.

    电动牵引车具备车身、作业机械、电动机、电池、以及控制电池的输入输出电力的转换器。电动牵引车具备将转换器作为控制对象的控制装置。控制装置执行限制处理、荷电状态计算处理和缓和处理。在限制处理中,在电池的状态满足限制条件时,控制装置控制转换器以将电池的输入输出限制于规定电力范围内。在荷电状态计算处理中,控制装置计算假定为在农场内完成作业时的电池的荷电状态,作为推定荷电状态。在缓和处理中,在推定荷电状态大于第一规定荷电状态的情况下,控制装置扩大规定电力范围。


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    Title :

    Electric tractor


    Additional title:

    电动牵引车


    Contributors:
    SUGO YUKI (author)

    Publication date :

    2023-04-04


    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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