To provide an auxiliary power unit and a steering device that can suppress a reduction in steering feeling in a variable gear ratio steering device.SOLUTION: An auxiliary power unit 40 is intended to supply power to a motor 21 of an EPS. The EPS is a variable gear ratio steering device configured to vary a specific stroke in accordance with a steering angle of a steering wheel. The auxiliary power unit 40 includes: an auxiliary power source 100 that assists power supply of a main power source 50 supplying power to the motor 21; and FET 1 to FET 5 that switch an operation state of the auxiliary power source 100 to a discharge state in a case where it is expected that motor torque to be generated by the motor 21 during rotation of the motor 21 exceeds the maximum motor torque that the motor 21 can output by the main power source 50 during rotation of the motor 21.SELECTED DRAWING: Figure 3

    【課題】バリアブルギアレシオのステアリング装置において、操舵フィーリングの低下を抑制することができる補助電源装置及びステアリング装置を提供する。【解決手段】補助電源装置40は、EPSのモータ21を給電対象としている。EPSは、比ストロークがステアリングホイールの操舵角度に応じて変化するように構成されたバリアブルギアレシオのステアリング装置である。補助電源装置40は、モータ21に対して電力を供給する主電源50の電力供給を補助する補助電源100と、モータ21が回転中の状態においてモータ21が発生すべきモータトルクが、モータ21が回転中の状態において主電源50によってモータ21が出力可能な最大のモータトルクを上回ることが想定される場合に、補助電源100の動作状態を放電状態に切り替えるFET1〜FET5とを備えている。【選択図】図3


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    Title :

    AUXILIARY POWER UNIT AND STEERING DEVICE


    Additional title:

    補助電源装置及びステアリング装置


    Contributors:

    Publication date :

    2021-12-02


    Type of media :

    Patent


    Type of material :

    Electronic Resource


    Language :

    Japanese


    Classification :

    IPC:    B62D MOTOR VEHICLES , Motorfahrzeuge



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