The invention relates to an electrical drive unit (1) for a motor vehicle, comprising: an electrical machine (2) having a stator (5) and a rotor (6); an inverter (3) having a first switch unit (10) for energizing a first phase system (U, V, W) of the stator (5); a transmission (4) connected to the rotor (6) for torque transmission; a lubricant circuit (14) for lubricating the transmission (4) and/or for cooling the rotor (5); a first cooling circuit (12) for cooling the first switch unit (10); a lubricant-coolant heat exchanger (20) for thermal coupling of the first coolant circuit (12) and the lubricant circuit (14); a control device (21), which is designed to provide a dissipation-increasing operating mode for the first switch unit (10) in order to increase a dissipation heating a coolant of the first coolant circuit (12), wherein the lubricant-coolant heat exchanger (20) is designed to transfer heat from the heated coolant to the lubricant circuit (14) in order to reduce a viscosityof a lubricant (15).

    本发明涉及一种用于机动车的电驱动单元(1),包括:具有定子(5)和转子(6)的电机(2);逆变器(3),具有给定子(5)的第一相系统(U、V、W)供电的第一开关单元(10);与转子(6)为了转矩传输而连接的传动装置(4);润滑剂回路(14),用于润滑传动装置(4)和/或冷却转子(5);第一冷却剂回路(12),用于冷却第一开关单元(10);润滑剂‑冷却剂热交换器(20),用于将第一冷却剂回路(12)与润滑剂回路(14)热耦合;控制装置(12),设计用于针对第一开关单元(10)提供增加损耗的运行模式,以便增加对第一冷却剂回路(12)的冷却剂进行加热的损耗功率;润滑剂‑冷却剂热交换器(20)设计用于将经加热的冷却剂的热量传输到润滑剂回路(14)上,以便减小润滑剂(15)的粘度。


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    Title :

    Electrical drive unit for a motor vehicle and motor vehicle


    Additional title:

    用于机动车的电驱动单元以及机动车


    Contributors:

    Publication date :

    2020-08-21


    Type of media :

    Patent


    Type of material :

    Electronic Resource


    Language :

    Chinese


    Classification :

    IPC:    B60K Anordnung oder Einbau von Antriebseinheiten oder von Kraft- bzw. Drehmomentübertragungen in Fahrzeugen , ARRANGEMENT OR MOUNTING OF PROPULSION UNITS OR OF TRANSMISSIONS IN VEHICLES



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