Device and method for activating a synchronous machine arranged in a vehicle
A technology of synchronous motors and equipment, applied in mechanical equipment, control devices, vehicle components, etc., can solve problems affecting the durability of lubricants, the total mileage of vehicles, and the life of transmissions, etc., to achieve maximum durability and benefit Effect of quality improvement and durability, reduction of mechanical wear
Inactive Publication Date: 2018-12-21
BAYERISCHE MOTOREN WERKE AG
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Problems solved by technology
This adversely affects the life of the individual components and the transmission itself as well as the durability of the lubricant
This may even go to such an extent that the overall driving range of the vehicle is thereby adversely affected
Method used
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[0025] figure 1 A drivetrain 12 arranged in a vehicle 10 is shown schematically, the vehicle 10 not being fully shown. The drive train 12 has a synchronous electric machine 14 and a transmission 16 , wherein the synchronous electric machine 14 and the transmission 16 advantageously form a structural unit. Furthermore, vehicle 10 has drive wheels 18 operatively connected to transmission 16 . The synchronous electric machine 14 is provided for driving drive wheels 18 via a transmission 16 . The drive wheels 18 are part of an axle 20, which may be a front axle or a rear axle. The synchronous motor 14 has a housing 22 to which a stator 24 of the synchronous motor 14 is fastened. The synchronous machine 14 also has a rotor 26 which is mounted rotatably relative to the stator 24 and relative to the housing 22 about an axis of rotation 28 . The synchronous machine 14 can be a current-excited synchronous machine, whereby the rotor 26 has a rotor winding 30 . Suitably passing curr...
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The present invention relates to a device (58) for activating a synchronous machine (14) arranged in a vehicle (10), wherein the vehicle (10) has a gearbox (16) and driven wheels (18) in operative connection therewith. The synchronous machine (14) is designed to drive the driven wheels (18) via the gearbox (16). In the vehicle (10) there is also a lubricating unit (44), which is designed to lubricate the gearbox (16) by means of a lubricant, for this purpose the lubricant flowing through the gearbox (16) and at least part of the synchronous machine (14). The device (58) is designed to operatethe synchronous machine (14) in a heating operating mode, which is different from a usual driving operating mode, when there are defined conditions that require heating when starting, at least one operating variable of the synchronous machine (14) being set in the heating operating mode specifically such that in the synchronous machine (14) there is a greater current heat loss in comparison with the usual driving operating mode, in order in this way to heat up the lubricant in the heating operating mode. In a corresponding way, the invention also relates to an associated method.
Description
technical field [0001] The invention relates to a device and a method for operating a synchronous electric machine arranged in a vehicle. Background technique [0002] Vehicles with electric drive systems are increasingly appearing on the market today. This can be a hybrid vehicle or an electric vehicle. A hybrid vehicle or an electric vehicle has an electric motor as a drive, which is supplied with electrical energy from a high-voltage power supply unit. In a hybrid vehicle, an additional unit is used for propulsion besides the electric machine, usually an internal combustion engine. Electric vehicles, on the other hand, are driven solely by electric motors. The electrical machines used are usually designed as inner rotor electrical machines in which a rotatably mounted rotor is surrounded by a stationary stator. Synchronous motors can be used as drives, which are either designed as permanent-magnet-excited or current-excited. High voltage supply units used in the auto...
Claims
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IPC IPC(8): B60K1/00F16H57/04
CPCB60K1/00F16H57/0476F16H57/0413Y02T10/72B60K17/16B60K2001/008
Inventor M·拉施
Owner BAYERISCHE MOTOREN WERKE AG