Motor assembly and vehicle

Abstract

The utility model discloses a motor assembly and a vehicle, and the motor assembly comprises a motor housing which is internally provided with an accommodation cavity and is made of a resin material; the armature structure is mounted in the accommodating cavity, and the armature structure is formed by encapsulating heat-conducting resin; wherein the motor shell is provided with a shell flow channel used for dissipating heat of the armature structure, and a first axial flow channel communicated with the shell flow channel is formed in the armature structure. According to the motor assembly provided by the utility model, the motor shell is made of the resin material, and the armature structure is formed by encapsulating the heat-conducting resin, so that the insulation between the motor shell and the armature is facilitated, the overall structural size of the motor can be effectively reduced, and compact installation is realized; the shell flow channel arranged in the motor shell and the first axial flow channel arranged in the armature structure can effectively dissipate heat of the armature structure, so that the running reliability of the motor is ensured.

Description

Technical Field

[0001] The utility model relates to the technical field of motors, in particular to a motor assembly and a vehicle having the motor assembly. Background Art

[0002] As a main component of new energy vehicles, the working performance of the motor is crucial for the reliable operation of the vehicle. Among them, the heat sources of the motor are mainly concentrated in the windings of the stator and the stator core slots. If it works in a high-temperature environment for a long time, it will seriously affect the working efficiency and service life of the drive motor. In related technologies, the motor housing is formed by die-casting aluminum alloy. The heat sources of the motor are mainly concentrated in the stator windings of the armature and the stator core slots. However, insulating paper needs to be arranged between the windings in the stator core slots for insulation, and the cooling medium cannot directly cool the windings in the core slots, resulting in unsatisfactory cooling effects.

[0003] In addition, the aluminum alloy motor housing requires a sufficient safety distance between the armature and the end cover and the housing, resulting in an over-large overall structural size of the motor and a large overall weight of the motor, which is not conducive to the vehicle mounting level energy consumption optimization. Summary of the Utility Model

[0004] The utility model aims to at least solve one of the technical problems existing in the prior art. For this purpose, the utility model provides a motor assembly, which has a small structural size, high safety, can achieve lightweight design, and is conducive to rapid heat dissipation.

[0005] The motor assembly according to an embodiment of the utility model includes: a motor housing, an accommodation cavity is formed in the motor housing, and the motor housing is made of resin material; an armature structure, the armature structure is installed in the accommodation cavity, and the armature structure is formed by potting with thermally conductive resin; wherein, the motor housing is formed with a housing flow channel for dissipating heat from the armature structure, and a first axial flow channel communicated with the housing flow channel is formed in the armature structure.

[0006] According to the motor assembly of the embodiment of the utility model, by setting the motor housing to be made of resin material and the armature structure to be formed by potting with thermally conductive resin, it is beneficial to the insulation between the motor housing and the armature, can effectively reduce the overall structural size of the motor, realize compact installation, and at the same time, the housing flow channel provided in the motor housing and the first axial flow channel provided in the armature structure can effectively dissipate heat from the armature structure, ensuring the reliability of the motor operation.

[0007] According to some embodiments of the utility model, the motor housing is formed with a cooling inlet and a cooling outlet, the housing flow channel is respectively communicated with the cooling inlet and the cooling outlet, and the first axial flow channel is respectively communicated with the cooling inlet and the cooling outlet through the housing flow channel.

[0008] For the motor assembly according to some embodiments of the present utility model, the housing flow channel includes a first circumferential flow channel and a second circumferential flow channel, and the first circumferential flow channel and the second circumferential flow channel are arranged on two inner end faces of the motor housing;

[0009] The armature structure includes a non-outlet-end copper wire, a straight-section copper wire, and an outlet-end copper wire that are sequentially potted and fixed along the axial direction. At least a part of the non-outlet-end copper wire extends into the first circumferential flow channel, at least a part of the outlet-end copper wire extends into the second circumferential flow channel, and both ends of the first axial flow channel are respectively communicated with the first circumferential flow channel and the second circumferential flow channel.

[0010] For the motor assembly according to some embodiments of the present utility model, the first axial flow channel is located inside the straight-section copper wire and is spaced apart from the straight-section copper wire in parallel;

[0011] And / or, there are a plurality of the first axial flow channels, and the plurality of the first axial flow channels are spaced apart and distributed in the circumferential direction of the armature structure.

[0012] For the motor assembly according to some embodiments of the present utility model, it further includes a controller copper busbar, and the controller copper busbar is electrically connected to the outlet-end copper wire through an outlet copper busbar;

[0013] The housing flow channel further includes a controller cooling cavity communicated with the first circumferential flow channel or the second circumferential flow channel, and at least a part of the controller copper busbar is installed in the controller cooling cavity.

[0014] For the motor assembly according to some embodiments of the present utility model, the controller cooling cavity has a through hole. The controller copper busbar includes an injection molding layer and a copper busbar part. The injection molding layer is sleeved outside the copper busbar part. The injection molding layer is installed at the through hole. A first sealing member for sealingly cooperating with the through hole is provided on the outer peripheral wall of the injection molding layer. One end of the copper busbar part is located in the controller cooling cavity and is connected to the outlet copper busbar, and the other end extends outside the through hole.

[0015] For the motor assembly according to some embodiments of the present utility model, it further includes a rotor part. The rotor part is rotatably installed in the armature structure. First bearing chambers and second bearing chambers are respectively provided on two inner end faces of the motor housing. Both ends of the rotor shaft of the rotor part are rotatably supported in the first bearing chamber and the second bearing chamber, and the housing flow channel is respectively communicated with the first bearing chamber and the second bearing chamber.

[0016] According to some embodiments of the present utility model, for the motor assembly, the housing flow channel includes a first end flow channel, a second axial flow channel, and a second end flow channel that are sequentially connected. The second axial flow channel is disposed within the circumferential wall of the motor housing, and the first end flow channel and the second end flow channel are respectively disposed within both ends of the motor housing;

[0017] The first end flow channel is in communication with the cooling inlet and is in communication with the first bearing chamber, and the second end flow channel is in communication with the cooling outlet and is in communication with the second bearing chamber.

[0018] According to some embodiments of the present utility model, for the motor assembly, the motor housing includes a casing and an end cover. The accommodation cavity is disposed within the casing and is open at one end of the casing. The end cover is detachably connected to one end of the casing to enclose the accommodation cavity, and the casing and / or the end cover form a housing flow channel;

[0019] And / or, a steel sleeve is provided between the armature structure and the inner wall of the motor housing.

[0020] The present utility model also proposes a vehicle.

[0021] According to an embodiment of the present utility model, the vehicle includes the motor assembly described in any of the above embodiments.

[0022] The advantages of the vehicle and the above-mentioned motor assembly over the prior art are the same and will not be elaborated herein.

[0023] Some of the additional aspects and advantages of the present utility model will be given in the following description, some will become apparent from the following description, or will be understood through the practice of the present utility model. BRIEF DESCRIPTION OF THE DRAWINGS

[0024] The above and / or additional aspects and advantages of the present utility model will become apparent and be readily understood from the description of the embodiments in conjunction with the following drawings, wherein:

[0025] Figure 1 is a cross-sectional view of the motor assembly according to the present utility model;

[0026] Figure 2 is a cross-sectional view of the casing according to the present utility model;

[0027] Figure 3 is a schematic structural view of the end cover according to the present utility model (axial view);

[0028] Figure 4 is Figure 3 the cross-sectional view at A-A in

[0029] Figure 5 is Figure 3 the cross-sectional view at B-B in

[0030] Figure 6 is a perspective view of one side of the end cover according to the present utility model;

[0031] Figure 7 is a perspective view of the other side of the end cover according to the present utility model;

[0032] Figure 8 is a schematic view of the armature structure according to the present utility model;

[0033] Figure 9 is a cross-sectional view of the armature structure according to the present utility model;

[0034] Figure 10 is a schematic view of the structure of the controller copper bar according to the present utility model;

[0035] Figure 11 is a partial cross-sectional view of the controller copper bar according to the present utility model;

[0036] Figure 12 is a partial cross-sectional view of the motor assembly according to the present utility model.

[0037] Reference numerals:

[0038] Motor assembly 100,

[0039] Motor housing 1, housing 11, accommodation cavity 111, first circumferential flow channel 112, cooling inlet 113, oil return flow channel 114, first bearing chamber 115, first end flow channel 116, first outer radial flow channel 1161, first inner radial flow channel 1162, second axial flow channel 117, end cover 12, controller cooling cavity 121, second circumferential flow channel 122, oil return hole 123, mounting hole 124, threaded steel sleeve 125, second bearing chamber 126, second end flow channel 127, main radial flow channel 1271, first outer axial flow channel 1272, first inner axial flow channel 1273, outlet 128, steel sleeve 13, second seal 14,

[0040] Armature structure 2, non-outlet end copper wire 21, straight section copper wire 22, outlet end copper wire 23, first axial flow channel 24, heat-conducting resin 25, outlet copper bar 26,

[0041] Controller copper bar 3, injection molding layer 31, copper bar part 32, first seal 33, fixing bolt 4. Detailed implementation manners

[0042] Embodiments of the present utility model will be described in detail below. Examples of the embodiments are shown in the accompanying drawings, where the same or similar reference numerals represent the same or similar elements or elements with the same or similar functions throughout. The embodiments described below by referring to the accompanying drawings are exemplary and are only used to explain the present utility model and should not be construed as a limitation of the present utility model.

[0043] In the description of the present utility model, it should be understood that the orientation or positional relationships indicated by terms such as "center", "longitudinal", "transverse", "length", "width", "thickness", "upper", "lower", "front", "rear", "left", "right", "vertical", "horizontal", "top", "bottom", "inner", "outer", "clockwise", "counterclockwise", "axial", "radial", "circumferential", etc. are based on the orientation or positional relationships shown in the accompanying drawings. These are only for the convenience of describing the present utility model and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation, and thus should not be construed as a limitation of the present utility model. In addition, features defined as "first" and "second" may explicitly or implicitly include one or more of such features. In the description of the present utility model, unless otherwise stated, the meaning of "a plurality" is two or more.

[0044] In the description of the present utility model, it should be noted that unless otherwise clearly specified and defined, the terms "mounted", "connected", and "coupled" should be understood in a broad sense. For example, it can be a fixed connection, a detachable connection, or an integral connection; it can be a mechanical connection or an electrical connection; it can be directly connected or indirectly connected through an intermediate medium, and it can be the communication inside two elements. For those of ordinary skill in the art, the specific meanings of the above terms in the present utility model can be understood according to specific situations.

[0045] Below, reference is made to Figures 1 - 12 Describe the motor assembly 100 according to an embodiment of the present utility model. The motor assembly 100 is made of a resin material, so that when the armature structure 2 is assembled with the motor housing 1, the requirements for electrical safety distances do not need to be considered, which is beneficial to reducing the structural size of the motor housing 1, reducing the axial dimension of the motor assembly 100, and the cooling medium flowing in the housing flow channel and the first axial flow channel 24 can dissipate heat from the armature structure 2, which is beneficial to reducing the operating stability of the armature structure 2 and improving the safety of the motor assembly 100.

[0046] As Figures 1 - 12 shown, a motor assembly 100 according to an embodiment of the present utility model includes a motor housing 1 and an armature structure 2.

[0047] As Figure 1As shown, a receiving cavity 111 is formed inside the motor housing 1, and the armature structure 2 is installed in the receiving cavity 111. Among them, the armature structure 2 is configured as the stator part of the motor assembly 100. The armature structure 2 can be relatively fixed to the motor housing 1, and the motor assembly 100 further includes a rotor part. The rotor part is rotationally fitted relative to the armature structure 2. For example, the rotor part is installed inside the armature structure 2 to form an inner rotor motor, or the rotor part is installed outside the armature structure 2 to form an outer rotor motor, and the setting method is flexibly selectable. Specifically, in actual design, the rotor part is connected with a rotor shaft. A bearing chamber for the rotor shaft can be provided at the end of the motor housing 1, and a bearing member is arranged in the bearing chamber to support the rotor shaft, so that the rotor part can drive the rotor shaft to rotate for power output and realize the electric drive function.

[0048] Among them, the motor housing 1 is formed with a housing flow channel for dissipating heat from the armature structure 2. The peripheral wall of the motor housing 1 can be set as a hollow wall to form a housing flow channel inside the peripheral wall of the motor housing 1, or the end wall of the motor housing 1 can be set as a hollow wall to form a housing flow channel inside the end wall of the motor housing 1, or both are set as hollow walls at the same time to increase the flow rate of the cooling medium in the housing flow channel, realize the cooling design from the end or the radial outside of the armature structure 2, and improve the cooling effect of the housing flow channel on the armature structure 2. And, a first axial flow channel 24 is formed inside the armature structure 2. The first axial flow channel 24 extends along the axial direction of the armature structure 2, and the first axial flow channel 24 communicates with the housing flow channel. That is, by setting the first axial flow channel 24, the cooling medium can flow to the inside of the armature structure 2, realizing the cooling and heat dissipation from the inside of the armature structure 2. Thus, through the combined heat dissipation of the first axial flow channel 24 and the housing flow channel, the armature structure 2 can be cooled in multiple directions from different positions on the inside and outside, which is beneficial to enhancing the cooling effect on the armature structure 2.

[0049] The cooling medium can be oil or other insulating cooling fluids.

[0050] The motor housing 1 is made of resin material. Compared with the traditional aluminum alloy material, the resin material can effectively attenuate the vibration and noise of the motor, which is beneficial to realizing the lightweight design of the motor housing 1 and reducing the overall weight of the motor assembly 100. And, a bearing member can be arranged at the mating part of the rotor shaft and the motor housing 1, so that the rotor part can drive the rotor shaft to rotate smoothly. Moreover, the motor housing 1 made of resin material can prevent the bearing member from being corroded by the shaft current, thus playing a role in preventing bearing electro-corrosion. The armature structure 2 can be formed by potting with a thermally conductive resin 25, replacing the traditional epoxy powder coating, insulating paint impregnation, and low design of slot insulation. While simplifying the manufacturing process of the armature structure 2, the copper wires of the armature structure 2 are completely protected, eliminating the insulation problems between copper wires, between copper wires and the iron core. At the same time, the thermally conductive resin 25 is in full contact with the copper wires and the iron core, which is beneficial to improving the heat conduction effect and thus achieving an ideal cooling effect.

[0051] Meanwhile, by providing a resinified motor housing 1, when the motor housing 1 is installed and mated with the armature structure 2, there is no need to consider the requirements of electrical safety distance, and the minimum clearance is left on the premise of ensuring no interference, so as to realize the compact design of the internal structure of the motor assembly 100, shorten the axial space of the motor, and help reduce the overall volume of the motor assembly 100.

[0052] In the motor assembly 100 according to the embodiment of the present invention, by making the motor housing 1 of resin material, it is beneficial to reduce the noise generated by the motor, realize the lightweight design of the motor assembly 100, and can reduce the risk of corrosion at the mating part between the armature structure 2 and the motor housing 1, and is also beneficial to reduce the structural size of the motor housing 1 to achieve compact installation. At the same time, the housing flow channel provided in the motor housing 1 and the first axial flow channel 24 provided in the armature structure 2 can effectively dissipate heat from the armature structure 2 to ensure the reliability of the motor operation.

[0053] In some embodiments, the motor housing 1 is formed with a cooling inlet 113 and a cooling outlet, the housing flow channel is respectively communicated with the cooling inlet 113 and the cooling outlet, and the cooling inlet 113 and the cooling outlet are respectively communicated with an external cooling flow path, so that the cooling medium in the external cooling flow path can enter the housing flow channel from the cooling inlet 113, and can cool down the armature structure 2 during the flow in the housing flow channel, and then flow out of the motor housing 1 from the cooling outlet.

[0054] Wherein, the cooling inlet 113 and the cooling outlet can be arranged at different ends of the motor housing 1. For example, the cooling inlet 113 is arranged at one end of the motor housing 1, and the cooling outlet is arranged at the other end of the motor housing 1; or the cooling inlet 113 and the cooling outlet can be arranged at the same end of the motor housing 1 and communicated through the housing flow channel, that is, the housing flow channel can extend to the other end of the motor housing 1 and return to the cooling outlet to realize the cooling and temperature reduction at different positions in the axial direction of the armature.

[0055] In addition, the first axial flow channel 24 is respectively communicated with the cooling inlet 113 and the cooling outlet through the housing flow channel, reducing the setting of the external cooling flow path, which is beneficial to reducing the number of inlets and outlets, reducing the setting difficulty, and lowering the setting cost.

[0056] In some embodiments, such as Figure 2 and Figure 3As shown, the housing flow path includes a first circumferential flow path 112 and a second circumferential flow path 122. The first circumferential flow path 112 and the second circumferential flow path 122 are provided on two inner end faces of the motor housing 1. Among them, both the first circumferential flow path 112 and the second circumferential flow path 122 extend along the circumference of the motor housing 1, that is, the first circumferential flow path 112 extends along the circumference on one inner end face of the motor housing 1 to cool different positions in the circumferential direction at one end of the armature structure 2. At the same time, the second circumferential flow path 122 extends along the circumference on the other inner end face of the motor housing 1 to cool different positions in the circumferential direction at the other end of the armature structure 2.

[0057] That is to say, both the first circumferential flow path 112 and the second circumferential flow path 122 are configured as annular flow paths, and both the first circumferential flow path 112 and the second circumferential flow path 122 open towards the accommodation cavity 111.

[0058] In addition, in actual design, the first circumferential flow path 112 and the second circumferential flow path 122 can be set to be distributed axially opposite in the motor housing 1 to make the heat dissipation effects at both ends of the armature structure 2 relatively balanced.

[0059] Among them, the armature structure 2 includes a non-outlet-end copper wire 21, a straight-section copper wire 22, and an outlet-end copper wire 23 that are potted and fixed in sequence along the axis. The stator part of the motor assembly 100 includes the non-outlet-end copper wire 21, the straight-section copper wire 22, and the outlet-end copper wire 23. As Figure 12 shown, the non-outlet-end copper wire 21 is located at the left end of the straight-section copper wire 22, the outlet-end copper wire 23 is located at the right end of the straight-section copper wire 22, and as Figure 1 shown, the outlet-end copper wire 23 is led out of the accommodation cavity 111 through an outlet copper row 26. The armature structure 2 can pot the non-outlet-end copper wire 21, the straight-section copper wire 22, and the outlet-end copper wire 23 with a thermally conductive resin 25 to replace the traditional epoxy powder coating, insulating paint impregnation, and low in-slot insulation design. While simplifying the manufacturing process of the armature structure 2, the copper wires of the armature are completely protected, eliminating the insulation problems between copper wires and between copper wires and the iron core. At the same time, the thermally conductive resin 25 is in full contact with the copper wires and the iron core, which is beneficial to improving the heat conduction effect and thus achieving an ideal cooling effect.

[0060] Thus, along the axial direction of the motor housing 1, the non-outlet-end copper wire 21, the straight-segment copper wire 22, and the outlet-end copper wire 23 are located between the first circumferential flow channel 112 and the second circumferential flow channel 122. At least a part of the non-outlet-end copper wire 21 extends into the first circumferential flow channel 112, at least a part of the outlet-end copper wire 23 extends into the second circumferential flow channel 122, and both ends of the first axial flow channel 24 are respectively communicated with the first circumferential flow channel 112 and the second circumferential flow channel 122. It should be noted that the non-outlet-end copper wire 21, the straight-segment copper wire 22, and the outlet-end copper wire 23 are potted and fixed, and the gap at the non-outlet-end copper wire 21 is communicated with the first circumferential flow channel 112, and the gap at the outlet-end copper wire 23 is communicated with the second circumferential flow channel 122.

[0061] During actual cooling, one of the first circumferential flow channel 112 and the second circumferential flow channel 122 is communicated with the cooling inlet 113 and the other is communicated with the cooling outlet. For example, the first circumferential flow channel 112 is communicated with the cooling inlet 113, and the second circumferential flow channel 122 is communicated with the cooling outlet. The cooling medium entering from the cooling inlet 113 can flow to the position of the first circumferential flow channel 112. The cooling medium at the first circumferential flow channel 112 can cool the non-outlet-end copper wire 21, and the cooling medium at the first circumferential flow channel 112 can also flow to the position of the second circumferential flow channel 122 through the first axial flow channel 24. During the process of flowing in the first axial flow channel 24, it can cool the straight-segment copper wire 22, and the cooling medium entering the second circumferential flow channel 122 can cool the outlet-end copper wire 23. Thus, separate cooling of the non-outlet-end copper wire 21, the straight-segment copper wire 22, and the outlet-end copper wire 23 can be realized, more detailed and targeted cooling can be achieved, and thus it is beneficial to quickly cool down the armature structure 2.

[0062] And, as Figure 2 shown, a second seal 14 can be arranged in the first circumferential flow channel 112. The second seal 14 can axially seal the outside of the non-outlet-end copper wire 21, so that the cooling medium in the first circumferential flow channel 112 can cool the non-outlet-end copper wire 21. At the same time, as Figure 4 shown, a second seal 14 can also be arranged in the second circumferential flow channel 122. The second seal 14 can axially seal the outside of the outlet-end copper wire 23, so that the cooling medium in the second circumferential flow channel 122 can cool the outlet-end copper wire 23.

[0063] In some embodiments, the first axial flow channel 24 is located inside the straight-segment copper wire 22. Thus, the first axial flow channel 24 is located in a region closer to the center inside the motor assembly 100, so that the first axial flow channel 24 can take out the heat inside the motor assembly 100, which is beneficial to enhancing the heat dissipation effect.

[0064] Moreover, the first axial flow channel 24 is arranged in parallel and spaced apart from the straight-section copper wire 22. Specifically, both the first axial flow channel 24 and the straight-section copper wire 22 extend along the axial direction of the armature structure 2, and the first axial flow channel 24 penetrates along the axial direction of the armature structure 2, so that the cooling medium in the first axial flow channel 24 can effectively dissipate heat from all positions of the armature structure 2 in the axial direction, and the distance between the first axial flow channel 24 and the straight-section copper wire 22 is relatively uniform at each position, which is beneficial to balancing the heat dissipation effect at each position of the straight-section copper wire 22.

[0065] In some embodiments, there are multiple first axial flow channels 24, and the multiple first axial flow channels 24 are spaced apart and distributed in the circumferential direction of the armature structure 2. It can be understood that both the first circumferential flow channel 112 and the second circumferential flow channel 122 are annular flow channels. By providing multiple first axial flow channels 24, the first circumferential flow channel 112 and the second circumferential flow channel 122 can be connected through the first axial flow channels 24 at multiple positions in the circumferential direction, which is beneficial to increasing the flow rate of the cooling medium and enhancing the cooling effect.

[0066] In other words, the multiple first axial flow channels 24 are all located inside the straight-section copper wire 22, and can cool the straight-section copper wire 22 in the armature structure 2 in multiple regions, which can greatly improve the cooling effect.

[0067] In some embodiments, as Figure 1 shown, the motor assembly 100 further includes a controller copper bus 3. The controller copper bus 3 is electrically connected to the outgoing line end copper wire 23 through an outgoing line copper bus 26. Thus, power can be supplied to the winding coils of the stator part through the controller copper bus 3, and further, the stator part can drive the rotor part to rotate when powered on, realizing power output.

[0068] The housing flow channel further includes a controller cooling cavity 121 communicating with the first circumferential flow channel 112 or the second circumferential flow channel 122. At least a part of the controller copper bus 3 is installed in the controller cooling cavity 121. In this way, the controller copper bus 3 can be cooled and temperature-reduced by the cooling medium in the controller cooling cavity 121, ensuring that the controller copper bus 3 is also in a relatively stable and reliable state.

[0069] Among them, the controller cooling cavity 121 may be provided with an oil return hole 123, and the housing flow channel further includes an oil return flow channel 114. The oil return hole 123 may communicate with one end of the oil return flow channel 114, and the other end of the oil return flow channel 114 communicates with the cooling outlet. In specific implementation, the cooling inlet 113 communicates with the first circumferential flow channel 112. The cooling medium in the first circumferential flow channel 112 flows through the first axial flow channel 24 to the second circumferential flow channel 122, and then flows into the controller cooling cavity 121, and then flows out of the cooling outlet through the oil return hole 123 and the oil return flow channel 114. The cooling outlet may communicate with the inside of the transmission cavity and finally flow to the oil pan. During this process, the straight-section copper wire 22, the outgoing-end copper wire 23, and the controller copper busbar 3 can be cooled to achieve effective temperature reduction.

[0070] In some embodiments, the controller cooling cavity 121 has a through hole 128. The controller copper busbar 3 includes an injection molding layer 31 and a copper busbar part 32. The injection molding layer 31 is sleeved outside the copper busbar part 32. The injection molding layer 31 is installed at the through hole 128. A first seal 33 that is sealingly matched with the through hole 128 is provided on the outer peripheral wall of the injection molding layer 31. One end of the copper busbar part 32 is located inside the controller cooling cavity 121 and is connected to the outgoing copper busbar 26, and the other end extends outside the through hole 128. Thus, the controller copper busbar 3 extends outside the motor housing 1 and can be connected to an external power source, which is conducive to realizing the power supply to the motor assembly 100. The part of the controller copper busbar 3 located inside the controller cooling cavity 121 can be effectively cooled and temperature-reduced to ensure that the controller copper busbar 3 is in a safe and stable temperature state.

[0071] Among them, the injection molding layer 31 may be made of injection molding nylon material.

[0072] Specifically, the motor housing 1 is provided with a mounting hole 124 inside the controller cooling cavity 121. A threaded steel sleeve 125 may be provided in the mounting hole 124. One end of the outgoing copper busbar 26 is connected to the outgoing-end copper wire 23, and the other end of the outgoing copper busbar 26 extends to the mounting hole 124. At the same time, one end of the copper busbar part 32 is located inside the controller cooling cavity 121 and is fixedly connected to the other end of the outgoing copper busbar through a fixing bolt 4 passing through the threaded steel sleeve 125. Thus, the installation and fixation of the controller copper busbar 3 can be realized. Among them, the threaded steel sleeve 125 may be injection molded into the resin of the motor housing 1, so that the motor housing 1 has an integrated wiring seat design, canceling the separate adapter part of the wiring seat, simplifying the assembly and reducing the space occupation.

[0073] Thus, setting the first seal 33 on the outer peripheral wall of the injection molding layer 31 can make the outer peripheral wall of the controller copper busbar 3 form a sealed installation with the motor housing 1, avoiding the outflow of the cooling medium in the controller cooling cavity 121, ensuring the sealing reliability of the motor housing 1, and ensuring the stability of the cooling performance.

[0074] And, such as Figure 3 、 Figure 5 andFigure 10 As shown, three controller busbars 3 can be provided, and the three controller busbars 3 are spaced apart and arranged in parallel.

[0075] In some embodiments, the motor assembly 100 further includes a rotor portion. First bearing chambers 115 and second bearing chambers 126 are respectively provided on two inner end faces of the motor housing 1. Two ends of the rotor shaft of the rotor portion are rotatably supported in the first bearing chambers 115 and the second bearing chambers 126, and the housing flow channels are respectively communicated with the first bearing chambers 115 and the second bearing chambers 126.

[0076] As Figure 1 shown, the motor housing 1 forms the first bearing chambers 115 and the second bearing chambers 126 at two ends of the rotor portion. Among them, bearing members can be respectively installed in the first bearing chambers 115 and the second bearing chambers 126, and the bearing members can rotatably support the rotor shaft to ensure that the rotor portion can stably drive the rotor shaft for power output. At the same time, the cooling medium in the housing flow channels can flow into the first bearing chambers 115 and the second bearing chambers 126 to cool the bearings at two ends of the rotor portion, and the cooling medium at the first bearing chamber 115 or the second bearing chamber 126 can also flow into the interior of the rotor portion to realize the internal cooling of the rotor portion and improve the cooling effect.

[0077] In a further embodiment, the housing flow channels include a first end flow channel 116, a second axial flow channel 117 and a second end flow channel 127 that are sequentially communicated. The second axial flow channel 117 is arranged in the peripheral wall of the motor housing 1, and the first end flow channel 116 and the second end flow channel 127 are respectively arranged in two ends of the motor housing 1. The first end flow channel 116 is communicated with the cooling inlet 113 and is communicated with the first bearing chamber 115, and the second end flow channel 127 is communicated with the cooling outlet and is communicated with the second bearing chamber 126.

[0078] Thus, the cooling medium at the cooling inlet 113 can enter the first end flow channel 116 to cool one end of the armature structure 2, and further enter the first bearing chamber 115 to cool the bearing member at this position. At the same time, part of the cooling medium in the first end flow channel 116 can flow from the second axial flow channel 117 to the second end flow channel 127 to cool the other end of the armature structure 2 and the bearing member at the other end, and the cooling medium entering the first bearing chamber 115 can flow from the interior of the armature structure 2 to the second bearing chamber 126 to realize the maximized internal cooling and enhance the cooling effect.

[0079] In some embodiments, the motor housing 1 includes a housing 11 and an end cover 12. A receiving cavity 111 is arranged in the housing 11 and is open at one end of the housing 11. The end cover 12 is detachably connected to one end of the housing 11 to close the receiving cavity 111. Specifically, as Figure 1As shown in the figure, a receiving cavity 111 is formed inside the housing 11, and the right end of the receiving cavity 111 is an open end. Thus, by flexibly disassembling the end cover 12, the receiving cavity 111 can be selectively opened, facilitating the installation and replacement of the armature structure 2.

[0080] Wherein, the housing 11 and / or the end cover 12 are formed with a housing flow channel, that is, a housing flow channel is provided in at least one of the housing 11 and the end cover 12, so that a cooling structure can be formed at both the housing 11 and the end cover 12.

[0081] Specifically, in actual design, the cooling inlet 113, the first circumferential flow channel 112, the first end flow channel 116, and the first bearing chamber 115 can be provided in the housing 11. At the same time, the second circumferential flow channel 122, the second end flow channel 127, the second bearing chamber 126, and the controller cooling cavity 121 are provided in the end cover 12. Among them, the first axial flow channel 24, the second axial flow channel 117, and the oil return flow channel 114 each include two parts, and one part is located inside the housing 11 and the other part is located inside the end cover 12.

[0082] And, as Figure 2 shown, the cooling inlet 113 is provided at the left end of the housing 11. The first end flow channel 116 includes a first outer radial flow channel 1161 and a first inner radial flow channel 1162. Among them, the cooling inlet 113 is communicated with the first inner radial flow channel 1162. The inner side of the first outer radial flow channel 1161 is communicated with the outer end of the first inner radial flow channel 1162. The inner end of the first inner radial flow channel 1162 is communicated with the first bearing chamber 115. And the middle part of the first inner radial flow channel 1162 is communicated with the first circumferential flow channel 112. The first outer radial flow channel 1161 is communicated with the first axial flow channel 24. At the same time, as Figure 4 shown, the second end flow channel 127 includes a main radial flow channel 1271, a first outer axial flow channel 1272, and a first inner axial flow channel 1273. Among them, the outer end of the main radial flow channel 1271 is communicated with the first axial flow channel 24. The first outer axial flow channel 1272 is located outside the first inner axial flow channel 1273 and is respectively communicated with the inner end of the main radial flow channel 1271. The first outer axial flow channel 1272 is communicated to a position corresponding to the bearing member inside the second bearing chamber 126. The first inner axial flow channel 1273 is communicated to a position directly opposite to the center of the rotor part inside the second bearing chamber 126, so as to realize the cooling of different positions inside the second bearing chamber 126.

[0083] And / or, a steel sleeve 13 is provided between the armature structure 2 and the inner wall of the motor housing 1, that is, the steel sleeve 13 can be arranged inside the motor housing 1 so that the armature structure 2 can pass through the steel sleeve 13. Among them, the steel sleeve 13 can be injection molded in the housing 11, effectively ensuring the interference fit between the housing 11 and the armature structure 2, ensuring the overall strength of the motor housing 1, preventing the armature structure 2 from moving axially, and eliminating the need for the armature structure 2 to add ears for bolt fixation, saving radial space.

[0084] The present utility model also provides a vehicle.

[0085] According to the vehicle of the embodiment of the present utility model, it includes the motor assembly 100 of any of the above embodiments. By setting the motor housing 1 to be made of resin material, it is beneficial to reduce the noise generated by the motor, achieve the lightweight design of the motor assembly 100. Since the materials of the housing 11 and the end cover 12 are resin, the two bearing chambers play an insulating role, which can prevent the bearing parts from being corroded by shaft current, play a role in preventing bearing electrical corrosion, and is beneficial to reducing the structural size of the motor housing 1 to achieve a compact installation. At the same time, the housing flow channel provided in the motor housing 1 can effectively dissipate heat from the armature structure 2, ensuring the reliability of the motor operation.

[0086] Among them, the motor assembly 100 can be applied to the power system of the vehicle, thereby providing stable power output for the vehicle and improving the driving performance of the whole vehicle.

[0087] In the description of this specification, the descriptions referring to terms such as "one embodiment", "some embodiments", "illustrative embodiments", "examples", "specific examples", or "some examples" etc. mean that the specific features, structures, materials, or characteristics described in connection with the embodiment or example are included in at least one embodiment or example of the present utility model. In this specification, the schematic representations of the above terms do not necessarily refer to the same embodiment or example. Moreover, the specific features, structures, materials, or characteristics described can be combined in a suitable manner in any one or more embodiments or examples.

[0088] Although the embodiments of the present utility model have been shown and described, those of ordinary skill in the art can understand that various changes, modifications, substitutions, and variations can be made to these embodiments without departing from the principles and spirits of the present utility model. The scope of the present utility model is defined by the claims and their equivalents.

Claims

1. An electric motor assembly, characterized in that, Comprising: A motor housing, within which an accommodation cavity is formed, and the motor housing is made of a resin material; An armature structure, which is installed within the accommodation cavity, and the armature structure is formed by potting with a thermally conductive resin; Wherein, the motor housing is formed with a housing flow channel for dissipating heat from the armature structure, and a first axial flow channel communicating with the housing flow channel is formed within the armature structure.

2. The motor assembly according to claim 1, wherein, The motor housing is formed with a cooling inlet and a cooling outlet, the housing flow channel is respectively communicated with the cooling inlet and the cooling outlet, and the first axial flow channel is respectively communicated with the cooling inlet and the cooling outlet through the housing flow channel.

3. The motor assembly according to claim 2, characterized in that, The housing flow channel includes a first circumferential flow channel and a second circumferential flow channel, and the first circumferential flow channel and the second circumferential flow channel are provided on two inner end faces of the motor housing; The armature structure includes a non-outlet-end copper wire, a straight-segment copper wire, and an outlet-end copper wire that are potted and fixed in sequence along the axial direction. At least a part of the non-outlet-end copper wire extends into the first circumferential flow channel, at least a part of the outlet-end copper wire extends into the second circumferential flow channel, and both ends of the first axial flow channel are respectively communicated with the first circumferential flow channel and the second circumferential flow channel.

4. The motor assembly according to claim 3, characterized in that, The first axial flow channel is located inside the straight-segment copper wire and is spaced apart from the straight-segment copper wire in parallel; And / or, there are multiple first axial flow channels, and the multiple first axial flow channels are spaced apart and distributed in the circumferential direction of the armature structure.

5. The motor assembly according to claim 3, wherein, It further includes a controller copper bar, and the controller copper bar is electrically connected to the outlet-end copper wire through an outlet copper bar; The housing flow channel further includes a controller cooling cavity communicated with the first circumferential flow channel or the second circumferential flow channel, and at least a part of the controller copper bar is installed within the controller cooling cavity.

6. The motor assembly according to claim 5, wherein, The controller cooling cavity has a through outlet. The controller copper bar includes an injection molding layer and a copper bar member. The injection molding layer is sleeved outside the copper bar member. The injection molding layer is installed at the through outlet. A first sealing member for sealingly cooperating with the through outlet is provided on the outer peripheral wall of the injection molding layer. One end of the copper bar member is located within the controller cooling cavity and is connected to the outlet copper bar, and the other end extends outside the through outlet.

7. The motor assembly according to claim 2, characterized in that, It further includes a rotor part, and the rotor part is rotatably installed within the armature structure. First bearing chambers and second bearing chambers are respectively provided on two inner end faces of the motor housing. Both ends of the rotor shaft of the rotor part are rotatably supported in the first bearing chamber and the second bearing chamber, and the housing flow channel is respectively communicated with the first bearing chamber and the second bearing chamber.

8. The motor assembly according to claim 7, characterized in that, The housing flow channel includes a first end flow channel, a second axial flow channel, and a second end flow channel that are sequentially communicated. The second axial flow channel is provided within the peripheral wall of the motor housing, and the first end flow channel and the second end flow channel are respectively provided within the two ends of the motor housing; The first end flow channel is communicated with the cooling inlet and is communicated with the first bearing chamber, and the second end flow channel is communicated with the cooling outlet and is communicated with the second bearing chamber.

9. The motor assembly according to claim 1, wherein The motor housing includes a housing and an end cover. The accommodating cavity is arranged inside the housing and is open at one end of the housing. The end cover is detachably connected to one end of the housing to close the accommodating cavity. A housing flow channel is formed in the housing and / or the end cover; And / or, a steel sleeve is arranged between the armature structure and the inner wall of the motor housing.

10. A vehicle, characterized in that, It includes the motor assembly according to any one of claims 1-9.

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