Motor assembly

Abstract

The utility model provides a motor assembly. The motor assembly comprises a wire harness, a motor stator and a motor bearing plate. The motor stator is fixed on the motor bearing plate, each phase winding lead of the motor stator extends out of the motor bearing plate, and the wire harness comprises a plurality of connecting wires. According to the utility model, the winding lead is directly connected with the cable end part of the corresponding connecting wire of the wire harness. According to the utility model, the use of an independent connecting terminal can be avoided, extra sealing of the connecting terminal and the connecting wire is not needed, local sealant can be directly used at a welding position, and extra cover plate sealing is not needed, so that the purposes of reducing the number of parts, simplifying the assembly process and reducing the raw material cost and the manufacturing cost can be achieved.

Description

Technical Field

[0001] The utility model relates to the field of vehicles, and more particularly to a motor assembly for a vehicle. Background Art

[0002] The vehicle motor assembly includes a motor stator and a motor carrier plate. Other motor components are housed in the motor stator, and the motor carrier plate is used to support and fix the motor stator. The leads of each phase winding of the motor stator extend from the motor carrier plate and are connected to the corresponding connection terminals of the wiring harness, usually by welding.

[0003] Currently, wiring harness connectors are typically specially manufactured. They are pre-wired to the harness cables, and the cables and connectors are sealed. They are then welded to the corresponding winding leads. Furthermore, the welded areas need to be sealed and insulated after welding. This results in a complex process for connecting the wiring harness to each phase winding of the motor stator, and the need for separate connectors and additional sealing and insulating materials leads to high manufacturing costs. Utility Model Content

[0004] The present invention aims to overcome the aforementioned shortcomings. To this end, the present invention provides a motor assembly comprising a wiring harness, a motor stator, and a motor carrier plate. The motor stator is secured to the motor carrier plate, and leads for each phase winding of the motor stator extend from the motor carrier plate. The wiring harness includes a plurality of connecting wires. According to the present invention, the winding leads are directly connected to the cable ends of the corresponding connecting wires of the wiring harness.

[0005] According to an embodiment, the cable end of the connecting wire directly connected to the winding lead is formed into a hook structure, or may be an L-shaped structure, and is fixedly connected to the corresponding winding lead by welding.

[0006] The connecting wires include three winding connecting wires and a grounding wire. The cable ends of the winding connecting wires are directly connected to the three-phase winding leads of the motor stator, and the grounding wire is connected to the stator laminations that constitute the motor stator. For example, the grounding wire is connected to the laminations through the motor carrier plate by screws to achieve the grounding function.

[0007] Preferably, the motor carrier plate is provided with a potting area at the location where the cable end and the winding lead are welded. This area is constructed as an annular structure protruding from the surface of the motor carrier plate to define a groove surrounding the weld location, which is filled with potting material. This arrangement facilitates sealing and insulation after welding.

[0008] According to an embodiment, the motor carrier plate is provided with two through holes. This arrangement facilitates the winding leads to extend from the motor carrier plate.

[0009] According to an embodiment, the potting region is provided with a recess through which the cables of the winding connection wires are passed.

[0010] According to an embodiment, the motor carrier plate is a plastic molded component.

[0011] The present invention configures the cable ends that connect the wiring harness to the winding leads of the motor stator into hook or L shapes, allowing the cable ends to function as connecting terminals themselves for direct welding to the winding leads. This avoids the use of additional connecting terminals and insulating materials at the connection between the connecting terminals and the cables, thereby reducing manufacturing costs. Furthermore, by providing a welding area on the motor carrier plate, potting within the welding area facilitates sealing and insulation of the welded areas after welding, thereby simplifying the process. BRIEF DESCRIPTION OF THE DRAWINGS

[0012] An embodiment of the present invention will be explained in more detail in the accompanying drawings, in which:

[0013] Figure 1 is a schematic perspective view of a motor assembly according to an embodiment of the present invention;

[0014] Figure 2 and Figure 3 is based on Figure 1 A schematic enlarged perspective view of the area where the motor stator winding leads and wire harness of the motor assembly are to be welded is shown.

[0015] In the accompanying drawings, for the sake of clarity, the embodiments of the present invention are shown in a simplified manner. The accompanying drawings are not necessarily shown to scale. Like reference numerals in the accompanying drawings represent similar components. DETAILED DESCRIPTION

[0016] Figure 1 A schematic diagram of a motor assembly according to an embodiment of the present invention is shown. As shown, the motor assembly 1 includes a motor stator 10 and a motor carrier plate 20. Other motor components (not shown) are housed within the motor stator 10, which is then secured to the motor carrier plate 20. The motor stator 10 is provided with locating pins 11, and the motor carrier plate 20 has corresponding locating holes 21 to facilitate assembly of the two components. The motor carrier plate 20 is typically a molded plastic component.

[0017] Motor assembly 1 also includes a wiring harness 30, which includes a sleeve 31 and three winding connection wires 32-1, 32-2, and 32-3. Each winding connection wire 32 has a connection terminal 33 for welding to a corresponding winding lead 40-1, 40-2, and 40-3 of the three-phase winding leads of the motor stator. In addition, to meet electromagnetic compatibility requirements, wiring harness 30 also includes a grounding wire 34 with a connection terminal 35. Grounding wire 34 is connected to the stator laminations that constitute the motor stator via screws 36 through the motor carrier plate 20.

[0018] The motor carrier plate 20 is provided with a plurality of slots for fixing the winding connection wires 32 and the ground wires 34 of the wiring harness 30. Figure 1 In the embodiment, the motor carrier plate 20 is provided with three sets of slots, namely slots 22, 23, and 24, along the extension direction of the winding connection wires 32-1, 32-2, and 32-3, starting near the connection terminal 33. Each set of slots has three slots, each for securing the three winding connection wires 32-1, 32-2, and 32-3, respectively. A slot 25 is provided on the motor carrier plate 20 for the ground wire 34. Furthermore, near the sleeve 31, the motor carrier plate 20 is provided with a hinged wire clamp 26 that can be opened and closed. When closed, the clamp 26 is locked with a screw 27 to further secure the wiring harness 30.

[0019] The motor carrier plate 20 is provided with a potting region 28 at the locations where the connection terminals 33 and the winding leads 40 - 1 , 40 - 2 , and 40 - 3 are to be welded (e.g., by resistance welding). This region 28 is constructed as an annular structure protruding from the surface of the motor carrier plate 20 , defining a groove surrounding the welded location. This groove is used to pot the welded location with a potting material after welding, thereby sealing and insulating the welded location. In this example, the potting region 28 is located near the outer periphery of the motor carrier plate 20 .

[0020] The slots 22 are separated from each other and are respectively adjacent to three potting areas 28. The slots 23 are also separated from each other, while the slots 24 are adjacent to each other. The slots 22, 23 and 24 are spaced apart from each other.

[0021] Figure 2 and Figure 3 An enlarged schematic diagram of the portion of the motor assembly 1 in the potting area 28 is shown. As shown, the connection terminal 33 of the winding connection wire 32-1 is formed by the cable end itself, which is bent into a hook shape (see Figure 2 ), to hook the two winding leads 40-1 of one phase, or bend them into an L shape (see Figure 3 ) to abut against the two winding leads 40-1 of one phase, facilitating welding. The motor carrier plate 20 has two through-holes 29 to facilitate the extension of the two winding leads 40-1 from the motor carrier plate 20. Furthermore, the potting area 28 has a notch 28a for the cable of the winding connection wire 32-1 to pass through.

[0022] Figure 2 and Figure 3 The figure also shows that the winding connecting wire 32-1 is fixed to the retaining groove 22 adjacent to the potting area 28 near the potting area 28. The retaining groove 22 is defined by two protrusions 22a, and the winding connecting wire 32 is retained between the protrusions 22a. In addition, each protrusion 22a has a ridge 22b on the side facing the winding connecting wire 32-1 to enhance the retaining effect of the retaining groove 22.

[0023] The embodiments described herein are for illustrative purposes only. In some cases, the features disclosed in this utility model may be used independently of other features. On the other hand, when necessary, the features disclosed in this utility model may be combined to provide various combinations. Therefore, this utility model is not limited to the embodiments shown herein. Based on the embodiments of this utility model, those skilled in the art may obtain other embodiments without creative work, and these embodiments also fall within the scope of protection of this utility model.

Claims

1. A motor assembly comprising a wiring harness, a motor stator, and a motor carrier plate, wherein the motor stator is fixed to the motor carrier plate, and leads of each phase winding of the motor stator extend from the motor carrier plate, and the wiring harness includes a plurality of connecting wires, characterized in that: The winding leads are directly connected to the cable ends of the corresponding connecting wires of the wiring harness.

2. The motor assembly according to claim 1, wherein: The cable ends of the connection wires directly connected to the winding leads are formed into a hook structure or an L-shaped structure, and the corresponding winding leads are fixed by welding.

3. The motor assembly according to claim 1 or 2, characterized in that: At the location where the cable end and the winding lead are connected, the motor carrier plate is provided with a potting area which is constructed as an annular structure protruding from the surface of the motor carrier plate to define a groove around the connection location which is filled with potting material.

4. The motor assembly according to claim 1 or 2, characterized in that: The motor carrier plate is provided with a through hole for the winding lead wire to extend from the motor carrier plate.

5. The motor assembly according to claim 3, characterized in that The potting area is provided with a gap through which the cables of the winding connection wires pass.

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