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CN-122029068-A - Hub drive device for a motor vehicle and motor vehicle

CN122029068ACN 122029068 ACN122029068 ACN 122029068ACN-122029068-A

Abstract

The invention relates to a hub drive (10) for a motor vehicle, comprising a wheel carrier (18), a wheel bearing (20), a wheel disk (14) which is rotatably mounted on the wheel carrier (18) by means of the wheel bearing (20), an electric motor (24) which has a stator (28) and a rotor (26), and a stator carrier (36), by means of which the stator (28) is held on the wheel carrier (18) in a rotationally fixed manner, characterized in that the stator carrier (36) has a first channel (38) for a high-voltage cable (40) and a second channel (42) for a coolant.

Inventors

  • F. Schwed
  • M. SCHMIDT
  • ADAMS ANGELIQUE
  • J. Dein
  • T. Slater
  • V. Qu En

Assignees

  • 梅赛德斯-奔驰集团股份公司

Dates

Publication Date
20260512
Application Date
20241112
Priority Date
20231117

Claims (11)

  1. 1. A hub drive (10) for a motor vehicle, having: A wheel frame (18); A wheel bearing (20); a wheel disc (14) rotatably supported by the wheel carrier (18) via the wheel bearing (20); an electric machine (24) having a stator (28) and a rotor (26), and A stator frame (36) by means of which the stator (28) is held on the wheel frame (18) in a rotationally fixed manner, Wherein the stator frame (36) has a first channel (38) for a high-voltage cable (40) and a second channel (42) for a coolant, Wherein the stator frame (36) has a radially outer first cylinder section (Z1), wherein the stator (28) is arranged to axially overlap the first cylinder section (Z1) and radially surround the first cylinder section, It is characterized in that the method comprises the steps of, The first cylinder segment (Z1) has a first opening (92) arranged radially outwardly, which is connected to the first channel (38).
  2. 2. The hub drive device (10) of claim 1, wherein the stator frame (36) has a third channel (44) for a sensor cable (46).
  3. 3. Hub drive device (10) according to claim 1 or 2, wherein the stator frame (36) has a conical section (K) directly connected to the first cylindrical section (Z1), which conical section extends from the first cylindrical section (Z1) radially inwards towards the wheel bearing (20) and axially towards the wheel frame (18).
  4. 4. A hub drive (10) according to claim 3, wherein the stator frame (36) has a second cylindrical section (Z2) arranged axially between the wheel frame (18) and the conical section (K).
  5. 5. The hub drive device (10) according to claim 4, characterized in that the first channel (38) has a first channel section (KA 1) and the second channel (42) has a second channel section, wherein the first channel section (KA 1) and the second channel section extend in an axial direction within a wall (W) of the second cylinder section (Z2).
  6. 6. The hub drive (10) according to claim 4 or 5, characterized in that the stator frame (36) has a third cylinder segment (Z3) which is arranged axially between the second cylinder segment (Z2) and the wheel disc (14), wherein the first partial bearing (TL 1) of the wheel bearing (20) is arranged radially inside the third cylinder segment (Z3) and axially overlaps the third cylinder segment (Z3).
  7. 7. The hub drive (10) according to claim 6, characterized in that the wheel bearing (20) has a second partial bearing (TL 2) which is arranged axially on a side (S1) of the first partial bearing (TL 1) facing away from the wheel disc (14).
  8. 8. The hub drive (10) according to claim 7, wherein the second sub-bearing (TL 2) is arranged at a side (S2) of the second cylinder segment (Z2) facing away from the first sub-bearing (TL 1).
  9. 9. Hub drive device (10) according to claim 7 or 8, characterized in that, -The first partial bearing (TL 1) has a first roller (64) and a first raceway arrangement (66) having a first raceway (68) for the first roller (64) and a second raceway (70) arranged radially within the first raceway (68), and -The second partial bearing (TL 2) has a second roller (72) connected to the first roller (64) in the axial direction and a second raceway arrangement (74) connected to the first raceway arrangement (66) in the axial direction, which second raceway arrangement has a third raceway (76) for the second roller (72) and a fourth raceway (78) arranged radially inside the third raceway (76).
  10. 10. Hub drive device (10) according to one of the preceding claims, comprising a hub sleeve (80) which is connected to the wheel disc (14) in a rotationally fixed manner, is arranged radially inside the wheel bearing (20) and is rotatably supported to the wheel carrier (18) by means of the wheel bearing (20).
  11. 11. Motor vehicle having at least one hub drive (10) according to one of the preceding claims.

Description

Hub drive device for a motor vehicle and motor vehicle The invention relates to a hub drive for a motor vehicle, in particular a motor vehicle, according to the preamble of claim 1. The invention further relates to a motor vehicle having at least one such hub drive. A wheel system for a vehicle is known from WO2022/096504A1, having a stator, a rotor and a rotational bearing. US2017/0214280A1 discloses a hub drive device in which the stator frame of the motor has a cylindrical portion and a conical portion. A hub drive is known from CN103448531a and DE102022004586B3, in which the stator frame of the electric machine has channels for both high-voltage cables and coolant, respectively. From US2023/0053415A1 a stator frame for a hub drive is known, which has channels for sensor cables. The object of the present invention is to provide a hub drive for a motor vehicle and a motor vehicle having at least one such hub drive, so that a particularly advantageous construction of the weight and installation space of the hub drive is possible. This object is achieved by a hub drive having the features of claim 1 and a motor vehicle having the features of claim 11. The other claims present advantageous designs with suitable inventive improvements. The first aspect of the invention relates to a hub drive device, also referred to as a hub drive or a hub drive mechanism, for a motor vehicle, also referred to as a vehicle for short, preferably designed as a motor vehicle, in particular as a passenger vehicle. This means that the motor vehicle has a hub drive in its fully manufactured state and can be driven by the hub drive, in particular in an purely electric manner. The hub drive is preferably an electric hub drive, by means of which the motor vehicle can be driven in particular in an purely electric manner. For example, in its fully manufactured state, the motor vehicle has at least or exactly two axles, also referred to as axles for short, which are arranged one behind the other and thus one behind the other in the longitudinal direction of the motor vehicle. Each axle of the motor vehicle has at least or exactly two wheels, also referred to as wheels for short, wherein the respective wheels of each axle are arranged on opposite sides of the motor vehicle in the transverse direction of the motor vehicle. The wheels of the motor vehicle are ground contacts, by means of which the motor vehicle can be supported or supported on the ground in the direction of its vehicle height. If the motor vehicle (which is also referred to as the passenger compartment or cabin interior space of the motor vehicle, for example, is formed by the body of the motor vehicle, which is in particular designed as a self-supporting body), runs along the ground while the motor vehicle is supported by means of the ground contact element downwards in the vehicle height direction on the ground, the ground contact element rolls in particular directly on the ground. The hub drive is also referred to as a first hub drive. The hub drive arrangements described above and below refer to the first hub drive arrangement unless otherwise indicated. For example, the hub drive has in particular exactly one first wheel of one of the axles. The wheel, as described above and below, refers to the first wheel unless otherwise indicated. The first wheel can thus be driven by the first hub drive, in particular in an purely electric manner. For example, the motor vehicle is provided in its fully manufactured state with a second hub drive in addition to the first hub drive, whereby in particular exactly one second wheel of the motor vehicle can be driven in particular in an electric-only manner, wherein it is conceivable that the second hub drive comprises a second wheel. Preferably, the first wheel and the second wheel are wheels of the same axle. The wheel, as described above and below, refers to the first wheel unless otherwise indicated. The description of the context of the first hub drive and the first wheel may be directly applied to the second hub drive and the second wheel and vice versa. The hub drive has a wheel carrier and a wheel bearing, which is also referred to as a wheel bearing arrangement or a wheel bearing arrangement. Preferably, the wheel bearing is designed as a rolling bearing. The wheel disc is rotatably supported by and via a wheel bearing to the wheel carrier. The hub drive means comprises a wheel disc. In particular, the wheel disc is an integral part of the first wheel, so that, for example, the wheel of the motor vehicle can be or has been rotatably supported on the wheel carrier. In particular, when the hub drive means comprises a wheel, the wheel is rotatably supported to the wheel carrier by means of and via the wheel bearing, whereby the wheel is rotatably supported to the wheel carrier about a wheel rotation axis relative to the wheel carrier. The wheel hub drive has a wheel disc which is rotatably supported on the wheel carrier by means of