Motor stator assembly and motor

Abstract

The invention provides a motor stator assembly and a motor, and the motor stator assembly comprises a stator body which is provided with a first cavity, and the first cavity is arranged along the axial direction of the stator body in a penetrating manner; the stator base is arranged in the first cavity, the stator base is provided with a first cooling channel, the first cooling channel is arranged in the circumferential direction of the stator body, and the end part of the stator base is provided with a liquid inlet and a liquid outlet which are communicated with the first cooling channel; and the stator support abuts against an end winding of the stator body, the stator support is provided with a second cooling channel, the second cooling channel extends in the circumferential direction of the stator body, and the second cooling channel communicates with the first cooling channel. According to the scheme, the first cooling channel and the second cooling channel form a three-dimensional cooling network which is communicated in the axial direction and the circumferential direction, so that all-directional heat exchange is carried out on the stator winding, the heat dissipation efficiency of the motor is improved, the heat of the stator winding is rapidly conducted out, and the overheating phenomenon is avoided.

Description

Technical Field

[0001] The present invention relates to the technical field of motors, and in particular to a motor stator assembly and a motor. Background Art

[0002] The development of electric aviation technology, especially the popularization of new energy electric ducted electric propulsion systems, has placed higher demands on the heat dissipation capacity of electric motors. Currently, the heat dissipation of aviation motors mainly relies on air cooling and axial stator water channel cooling. Although air cooling is simple, its cooling effect is greatly affected by the airflow generated by the propeller during flight. If the airflow intensity is insufficient, the heat dissipation efficiency will drop significantly, and the motor temperature may rise rapidly, affecting the stability and life of the motor. Although axial stator water channel cooling can improve the heat dissipation efficiency to a certain extent, its heat dissipation effect is limited by the water channel design and water flow velocity. Especially under high power operation or high ambient temperature, the heat inside the motor is difficult to dissipate quickly, causing the motor temperature to continue to rise, reducing the efficiency and reliability of the motor.

[0003] Currently, no effective solution has been proposed to the problem of low heat dissipation efficiency of the above-mentioned motor. Summary of the Invention

[0004] The main purpose of the present invention is to provide a motor stator assembly and a motor to solve the problem of low heat dissipation efficiency of the motor.

[0005] To achieve the above-mentioned object, according to one aspect of the present invention, a motor stator assembly is provided, comprising: a stator body, the stator body being provided with a first cavity, the first cavity being arranged to pass through the stator body in the axial direction; a stator base, the stator base being arranged in the first cavity, the stator base being provided with a first cooling channel, the first cooling channel being arranged circumferentially around the stator body, the end of the stator base being provided with a liquid inlet and a liquid outlet connected to the first cooling channel; a stator support, the stator support being in contact with the end winding of the stator body, the stator support being provided with a second cooling channel, the second cooling channel being extended along the circumference of the stator body, and the second cooling channel being connected to the first cooling channel.

[0006] Furthermore, the first cooling channel includes multiple cooling sections, and the multiple cooling sections include: a first cooling section, the first cooling section is provided with a first outlet and a liquid inlet, and the liquid inlet is connected to the second inlet of the second cooling channel through the first outlet; a second cooling section, the second cooling section is provided with a first inlet and a liquid outlet, and the liquid outlet is connected to the second outlet of the second cooling channel through the first inlet.

[0007] Furthermore, the stator base includes: a base body, which is an annular structure, and a third cavity is formed between the outer circular surface and the inner circular surface of the base body. The third cavity is arranged along the axial direction of the base body. A plurality of isolation plates are provided in the third cavity, and the plurality of isolation plates separate the third cavity into a first cooling section and a second cooling section; a base end cover, which is connected to the end of the base body and abuts against at least part of the isolation plate.

[0008] Furthermore, multiple isolation plates are arranged to extend axially along the third cavity, and the multiple isolation plates include: a main partition, the main partition includes a first partition and a second partition, both ends of the first partition and the second partition are abutted against the base end cover to separate the third cavity into a first cooling section and a second cooling section; an auxiliary partition, at least one auxiliary partition is provided in the first cooling section and / or the second cooling section, one end of each auxiliary partition is abutted against the base end cover, and the other end of each auxiliary partition is arranged with a gap between the base end cover, the auxiliary partition divides the corresponding cooling section into multiple channel component sections, and adjacent channel component sections are connected at the end near one end of the stator body so that the flow direction of the refrigerant in adjacent channel component sections is opposite.

[0009] Furthermore, the plurality of auxiliary baffles arranged in at least one of the first cooling section and the second cooling section include: an inlet section baffle, the inlet section baffle is arranged close to the first baffle, the first end of the inlet section baffle is arranged flush with one end of the first baffle, and the second end of the inlet section baffle is arranged at a height difference from the other end of the first baffle; an outlet section baffle, the outlet section baffle is arranged close to the second baffle, the first end of the outlet section baffle is arranged flush with one end of the second baffle, and the second end of the outlet section baffle is arranged at a height difference from the other end of the second baffle, wherein the first end of the outlet section baffle is flush with the first end of the inlet section baffle The middle partition is arranged in parallel; there is at least one middle partition, the middle partition is located between the inlet section partition and the outlet section partition, the first end of the middle partition close to the inlet section partition is arranged with a height difference from one end of the inlet section partition, the second end of the middle partition close to the inlet section partition is arranged with a height difference from the other end of the inlet section partition, the first end of the middle partition close to the outlet section partition is arranged with a height difference from one end of the outlet section partition, the second end of the middle partition close to the outlet section partition is arranged with a height difference from the other end of the outlet section partition, and the corresponding ends of the two adjacent middle partitions are arranged with a height difference.

[0010] Furthermore, a first fin is provided in the first cooling section and / or the second cooling section, and both ends of the first fin are arranged with a gap between them and the base end cover.

[0011] Furthermore, the stator support includes: a support body, the support body has a receiving groove, the receiving groove is extended along the circumference of the support body, and a second inlet and a second outlet are provided on the support body; a stator end cover, the stator end cover is connected to the open end of the receiving groove, and a second cooling channel is formed between the stator end cover and the support body.

[0012] Furthermore, a blocking plate is provided in the accommodating groove, which is connected between two opposite groove walls of the accommodating groove, the bottom of the blocking plate is connected to the groove bottom of the accommodating groove, the top of the blocking plate is in contact with the stator end cover, and the second inlet and the second outlet are respectively arranged on both sides of the blocking plate.

[0013] Furthermore, a second fin is provided in the accommodating groove, and a gap is provided between the second fin and the groove wall of the accommodating groove.

[0014] According to another aspect of the present invention, a motor is provided, wherein the motor includes the motor stator assembly described above.

[0015] Using the technical solution of the present invention, a first cooling channel on the stator base is arranged circumferentially around the stator body, and a second cooling channel located at the end of the stator body is connected to the first cooling channel. Specifically, the first cooling channel extends axially along the stator body to exchange heat with the windings located within the stator body; the second cooling channel extends circumferentially along the stator body, expanding the cooling path to exchange heat with the windings located at the end of the stator body. The first and second cooling channels in this solution form a three-dimensional cooling network that is interconnected axially and circumferentially, providing all-round heat exchange for the stator windings, improving the motor's heat dissipation efficiency, and rapidly dissipating heat from the stator windings to prevent overheating. BRIEF DESCRIPTION OF THE DRAWINGS

[0016] The accompanying drawings, which constitute part of this application, are intended to provide a further understanding of the present invention. The exemplary embodiments of the present invention and their descriptions are intended to explain the present invention and do not constitute an undue limitation of the present invention. In the accompanying drawings:

[0017] Figure 1 The figure shows a schematic structural diagram of the motor stator assembly in the present invention;

[0018] Figure 2 A schematic cross-sectional view of a motor stator assembly according to the present invention is shown;

[0019] Figure 3 A schematic diagram showing the relationship between the first cooling channel and the second cooling channel in the present invention is shown;

[0020] Figure 4 Shows a schematic structural diagram of the stator base in the present invention;

[0021] Figure 5It shows a schematic structural diagram of the base body in the present invention;

[0022] Figure 6 The figure shows a schematic structural diagram of the support body in the present invention.

[0023] The above drawings include the following reference numerals:

[0024] 10. Stator body;

[0025] 20. Stator base;

[0026] 21. Base body;

[0027] 211, second cavity; 212, third cavity; 213, liquid inlet; 214, liquid outlet; 215, first inlet; 216, first outlet; 217, main baffle; 2171, first baffle; 2172, second baffle; 218, auxiliary baffle; 2181, inlet baffle; 2182, middle baffle; 2183, outlet baffle; 219, first fin;

[0028] 22. Base end cover;

[0029] 23. First cooling channel;

[0030] 30. Stator support;

[0031] 31. Support body;

[0032] 311, second inlet; 312, second outlet; 313, receiving groove; 314, blocking plate; 315, second fin; 316, connecting member;

[0033] 32. Stator end cover;

[0034] 33. Second cooling channel;

[0035] 40. Liquid inlet pipe;

[0036] 50. Liquid outlet pipe. DETAILED DESCRIPTION

[0037] It should be noted that, in the absence of conflict, the embodiments and features of the embodiments in this application can be combined with each other. The present invention will be described in detail below with reference to the accompanying drawings and in combination with the embodiments.

[0038] It should be noted that the terms used herein are only for describing specific embodiments and are not intended to limit the exemplary embodiments according to the present application. As used herein, unless the context clearly indicates otherwise, the singular form is also intended to include the plural form. In addition, it should be understood that when the terms "comprise" and / or "include" are used in this specification, they indicate the presence of features, steps, operations, devices, components and / or combinations thereof.

[0039] It should be noted that the terms "first", "second", etc. in the specification and claims of the present application and the above-mentioned drawings are used to distinguish similar objects and are not necessarily used to describe a specific order or sequence. It should be understood that the terms used in this way are interchangeable where appropriate, so that the embodiments of the present application described herein can, for example, be implemented in an order other than those illustrated or described herein. In addition, the terms "including" and "having" and any variations thereof are intended to cover non-exclusive inclusions, for example, a process, method, system, product or device that includes a series of steps or units is not necessarily limited to those steps or units clearly listed, but may include other steps or units that are not clearly listed or inherent to these processes, methods, products or devices.

[0040] Now, exemplary embodiments according to the present application will be described in more detail with reference to the accompanying drawings. However, these exemplary embodiments can be implemented in a variety of different forms and should not be interpreted as being limited to the embodiments described herein. It should be understood that these embodiments are provided to make the disclosure of this application thorough and complete, and to fully convey the concepts of these exemplary embodiments to those of ordinary skill in the art. In the accompanying drawings, for the sake of clarity, the thickness of layers and regions may be exaggerated, and the same reference numerals are used to represent the same devices, and thus their descriptions will be omitted.

[0041] Combine Figures 1 to 6 As shown, according to a specific embodiment of the present application, a motor stator assembly is provided.

[0042] Specifically, the motor stator assembly includes a stator body 10, a stator base 20, and a stator support 30. The stator body 10 is provided with a first cavity, which is arranged to extend axially through the stator body 10. The stator base 20 is disposed within the first cavity and is provided with a first cooling channel 23. The first cooling channel 23 is arranged circumferentially around the stator body 10. The ends of the stator base 20 are provided with a liquid inlet 213 and a liquid outlet 214 that communicate with the first cooling channel 23. The stator support 30 abuts the end windings of the stator body 10 and is provided with a second cooling channel 33. The second cooling channel 33 extends circumferentially along the stator body 10 and is connected to the first cooling channel 23.

[0043] In an embodiment of the present application, a first cooling channel 23 on the stator base 20 is arranged circumferentially around the stator body 10, and a second cooling channel 33 located at the end of the stator body 10 is connected to the first cooling channel 23. That is, the first cooling channel 23 extends axially along the stator body 10 to exchange heat with the windings located inside the stator body 10; the second cooling channel 33 extends circumferentially along the stator body 10, expanding the cooling path to exchange heat with the windings located at the end of the stator body 10. The first cooling channel 23 and the second cooling channel 33 in the above scheme form a three-dimensional cooling network that is connected in the axial and circumferential directions to perform all-round heat exchange on the stator windings, improve the heat dissipation efficiency of the motor, and quickly remove heat from the stator windings to avoid overheating.

[0044] It should be noted that the stator body 10, the stator base 20 and the stator support 30 are packaged together through a potting process. The potting material fills the gaps between the stator body 10, the stator base 20 and the stator support 30 to form a continuous insulation layer, which effectively isolates the internal high-voltage winding from the external metal structure, enhances the electrical safety and insulation performance of the entire motor, and avoids short-circuit failures caused by accidental contact or moisture.

[0045] Preferably, there are two stator supports 30, which are respectively arranged at the two ends of the stator body 10. The two stator supports 30 are both in contact with the corresponding end windings, wherein the second cooling channels 33 on the two stator supports 30 are both connected to the first cooling channel 23 to achieve synchronous heat dissipation of the two end windings.

[0046] In an exemplary embodiment of the present application, the first cooling channel 23 includes multiple cooling sections, and the multiple cooling sections include: a first cooling section and a second cooling section, the first cooling section is provided with a first outlet 216 and a liquid inlet 213, the liquid inlet 213 is connected to the second inlet 311 of the second cooling channel 33 through the first outlet 216, and the second cooling section is provided with a first inlet 215 and a liquid outlet 214, and the liquid outlet 214 is connected to the second outlet 312 of the second cooling channel 33 through the first inlet 215.

[0047] In an embodiment of the present application, the refrigerant flows into the first cooling section from the liquid inlet 213, flows from the first cooling section to the second cooling channel 33 through the first outlet 216, then flows from the second cooling channel 33 to the second cooling section through the second outlet 312, and finally flows out through the liquid outlet 214. That is, the refrigerant first flows along the axial direction of the stator body 10, then flows along the circumferential direction of the stator body 10, and finally flows back to the axial direction of the stator body 10, realizing the circulation flow of the refrigerant in the axial and circumferential directions, forming a closed-loop cooling circuit, which can achieve uniform and rapid heat dissipation of the stator body 10.

[0048] like Figure 2 、 Figure 3 、 Figure 4 As shown, there are two stator supports 30, each having the same structure. One stator support 30 is connected to the first end of the stator base 20 via a connector 316, and the other stator support 30 is connected to the second end of the stator base 20 via a connector 316. The first end of the stator base 20 is provided with a liquid inlet 213, a liquid outlet 214, a first outlet 216, and a first inlet 215. The second end of the stator base 20 is provided with only the first outlet 216 and the first inlet 215. The two first outlets 216 on the stator base 20 are arranged in a communication manner along the axial direction of the stator base 20, i.e., the two first outlets 216 are arranged opposite each other in the axial direction of the stator base 20. The two first inlets 215 on the stator base 20 are arranged in a communication manner along the axial direction of the stator base 20, i.e., the two first inlets 215 are arranged opposite each other in the axial direction of the stator base 20. Among them, the liquid inlet 213 and the liquid outlet 214 are located on the same side of the stator base 20, the liquid inlet 213 is connected to the liquid inlet pipe 40, and the liquid outlet 214 is connected to the liquid outlet pipe 50, so that the liquid inlet and outlet devices are located on the same side of the stator base 20, thereby making the structure of the motor stator assembly more compact and reducing the overall volume of the motor stator assembly.

[0049] like Figure 2 、 Figure 3 、 Figure 4 As shown, the first and second cooling sections are sequentially distributed along the circumference of the stator base 20. The first end of the first cooling section is provided with a first outlet 216 and a liquid inlet 213, while the second end of the first cooling section is provided with only the first outlet 216. The first end of the second cooling section is provided with a first inlet 215 and a liquid outlet 214, while the second end of the second cooling section is provided with only the first inlet 215. After flowing out of the first outlet 216, the refrigerant in the first cooling section is split into the two second cooling channels 33 within the stator support 30. The refrigerant in the two second cooling channels 33 flows out of their respective second outlets 312, flows through their respective first inlets 215 into the second cooling section, and finally flows out of the liquid outlet 214.

[0050] As an alternative embodiment, the first cooling section and the second cooling section may be distributed sequentially along the axial direction of the stator base 20 , with the first cooling section communicating with the second cooling channel 33 in one of the stator supports 30 , and the second cooling section communicating with the second cooling channel 33 in the other stator support 30 .

[0051] Furthermore, the stator base 20 includes: a base body 21 and a base end cover 22. The base body 21 is an annular structure. A third cavity 212 is formed between the outer circular surface and the inner circular surface of the base body 21. The third cavity 212 is arranged to pass through the base body 21 in the axial direction. A plurality of isolation plates are provided in the third cavity 212. The plurality of isolation plates separate the third cavity 212 into a first cooling section and a second cooling section. The base end cover 22 is connected to the end of the base body 21, and the base end cover 22 abuts against at least part of the isolation plate.

[0052] In an embodiment of the present application, the isolation plate divides the third cavity 212 into a first cooling section and a second cooling section, so that the refrigerant can circulate cooling around the entire circumference of the inner ring of the stator body 10, thereby increasing the heat exchange area of ​​the inner ring of the stator body 10, and thereby improving the heat dissipation efficiency of the motor, so as to quickly dissipate the heat of the stator winding and avoid overheating.

[0053] like Figure 4 、 Figure 5 As shown, the base body 21 is an annular structure. A second cavity 211 is formed between the inner circumferential surfaces of the base body 21, and a third cavity 212 is formed between the outer and inner circumferential surfaces of the base body 21. Two main partitions 217 are provided within the third cavity 212. The two main partitions 217 include a first partition 2171 and a second partition 2172 arranged radially opposite each other along the stator base 20. The first partition 2171 and the second partition 2172 evenly divide the third cavity 212 into a first cooling section and a second cooling section, ensuring that the refrigerant flows through the first and second cooling sections at a consistent rate, thereby achieving uniform heat dissipation from the stator body 10.

[0054] like Figure 4 、 Figure 5 As shown, there are two base end covers 22, one at each end of the base body 21. Each base end cover 22 abuts against two main partitions 217 to isolate the first cooling section from the second cooling section. This allows the first cooling section to communicate with the second cooling section only through the second cooling channel 33, thus preventing direct communication between the first and second cooling sections. One of the base end covers 22 is provided with a liquid inlet 213, a liquid outlet 214, a first outlet 216, and a first inlet 215, while the other base end cover 22 is provided with only the first outlet 216 and the first inlet 215.

[0055] In an exemplary embodiment of the present application, a plurality of partition plates are arranged axially along the third cavity 212, and the plurality of partition plates include a main partition plate 217 and an auxiliary partition plate 218. The main partition plate 217 includes a first partition plate 2171 and a second partition plate 2172. Both ends of the first partition plate 2171 and the second partition plate 2172 abut against the base end cover 22 to separate the third cavity 212 into a first cooling section and a second cooling section. At least one auxiliary partition plate 218 is provided in the first cooling section and / or the second cooling section. One end of each auxiliary partition plate 218 abuts against the base end cover 22, and the other end of each auxiliary partition plate 218 is spaced from the base end cover 22. The auxiliary partition plates 218 divide the corresponding cooling section into a plurality of channel sections. Adjacent channel sections are connected at their ends near one end of the stator body 10, so that the refrigerant flows in opposite directions within the adjacent channel sections.

[0056] In an embodiment of the present application, the main partition 217 divides the third cavity 212 into a first cooling section and a second cooling section, and the auxiliary partition 218 further subdivides each cooling section into multiple channel sections. The refrigerant in adjacent channel sections flows in opposite directions, so that the refrigerant encounters resistance during the flow and turns, thereby generating eddy currents and turbulence effects. This turbulence effect can increase the contact area between the refrigerant and the motor stator winding, accelerate the heat transfer rate, and further improve the cooling efficiency.

[0057] Furthermore, the plurality of auxiliary baffles 218 disposed in at least one of the first cooling section and the second cooling section include: an inlet baffle 2181, an outlet baffle 2183, and a middle baffle 2182. The inlet baffle 2181 is disposed adjacent to the first baffle 2171, with its first end flush with one end of the first baffle 2171 and its second end at a height difference from the other end of the first baffle 2171. The outlet baffle 2183 is disposed adjacent to the second baffle 2172, with its first end flush with one end of the second baffle 2172 and its second end at a height difference from the other end of the second baffle 2172, wherein its first end is flush with the first end of the inlet baffle 2181. There is at least one middle partition 2182, which is located between the inlet section partition 2181 and the outlet section partition 2183. The first end of the middle partition 2182 near the inlet section partition 2181 is set at a height difference from one end of the inlet section partition 2181, the second end of the middle partition 2182 near the inlet section partition 2181 is set at a height difference from the other end of the inlet section partition 2181, the first end of the middle partition 2182 near the outlet section partition 2183 is set at a height difference from one end of the outlet section partition 2183, the second end of the middle partition 2182 near the outlet section partition 2183 is set at a height difference from the other end of the outlet section partition 2183, and both ends of the two adjacent middle partitions 2182 are set at a height difference.

[0058] Preferably, a plurality of auxiliary baffles 218 are provided in the first cooling section, and a plurality of auxiliary baffles 218 are also provided in the second cooling section, that is, the first cooling section and the second cooling section both have a plurality of channel sections.

[0059] like Figure 5As shown, the first partition 2171 and the second partition 2172 separate the third cavity 212 into a first cooling section and a second cooling section. Within the first cooling section, the inlet section partition 2181 is disposed adjacent to the first partition 2171, forming a first channel between the inlet section partition 2181 and the first partition 2171. The first end of the inlet section partition 2181 is flush with one end of the first partition 2171, forming a D-interface at the first end of the inlet section partition 2181. The first end of the inlet section partition 2181 and one end of the first partition 2171 both abut against the base end cover 22, so that the D-interface communicates with the liquid inlet 213 on the base end cover 22. The outlet section partition 2183 is arranged adjacent to the second partition 2172, and a sixth channel is formed between the outlet section partition 2183 and the second partition 2172. The first end of the outlet section partition 2183 is arranged flush with one end of the second partition 2172 to form a B interface at the first end of the outlet section partition 2183. The first end of the outlet section partition 2183 and one end of the second partition 2172 are both abutted against the base end cover 22 to connect the B interface with the first outlet 216 on the base end cover 22. Three middle partitions 2182 are provided between the inlet section partition 2181 and the outlet section partition 2183 to form a second channel, a third channel, a fourth channel and a fifth channel. The first end of the inlet section partition 2181 is arranged with a height difference from the other end of the first partition 2171, the first end of the middle partition 2182 close to the inlet section partition 2181 is arranged with a height difference from the first end of the inlet section partition 2181, the second end of the middle partition 2182 close to the inlet section partition 2181 is arranged with a height difference from the second end of the inlet section partition 2181, the first end of the middle partition 2182 close to the outlet section partition 2183 is arranged with a height difference from one end of the outlet section partition 2183, and the second end of the middle partition 2182 close to the outlet section partition 2183 is arranged with a height difference from the outlet section partition The other end of the plate 2183 is set with a height difference, and the corresponding ends of the two adjacent middle partitions 2182 are set with a height difference, so that a first notch is formed on the outlet side of the first channel, and the first channel is connected to the inlet of the second channel through the first notch, a second notch is formed on the outlet side of the second channel, and the second channel is connected to the inlet of the third channel through the second notch, a third notch is formed on the outlet side of the third channel, and the third channel is connected to the inlet of the fourth channel through the third notch, a fourth notch is formed on the outlet side of the fourth channel, and the fourth channel is connected to the inlet of the fifth channel through the fourth notch, a fifth notch is formed on the outlet side of the fifth channel, and the fifth channel is connected to the inlet of the sixth channel through the fifth notch, so that the refrigerant in the first cooling section flows in an S shape along the circumference of the base body 21.

[0060] like Figure 5As shown, the first partition 2171 and the second partition 2172 separate the third cavity 212 into a first cooling section and a second cooling section. Within the second cooling section, the inlet section partition 2181 is disposed adjacent to the second partition 2172, forming a seventh channel therebetween. The first end of the inlet section partition 2181 is flush with one end of the second partition 2172, forming an A interface at the first end of the inlet section partition 2181. The first end of the inlet section partition 2181 and one end of the second partition 2172 both abut against the base end cover 22, so that the A interface communicates with the first inlet 215 on the base end cover 22. The outlet section partition 2183 is arranged adjacent to the first partition 2171, and a twelfth channel is formed between the outlet section partition 2183 and the first partition 2171. The first end of the outlet section partition 2183 is arranged flush with one end of the first partition 2171 to form a C interface at the first end of the outlet section partition 2183. The first end of the outlet section partition 2183 and one end of the first partition 2171 are both abutted against the base end cover 22 to connect the C interface with the liquid outlet 214 on the base end cover 22.

[0061] Three middle partitions 2182 are provided between the inlet section partition 2181 and the outlet section partition 2183 to form the eighth channel, the ninth channel, the tenth channel and the eleventh channel. The first end of the inlet section partition 2181 is arranged with a height difference from the other end of the second partition 2172. The first end of the middle partition 2182 near the inlet section partition 2181 is arranged with a height difference from the first end of the inlet section partition 2181. The second end of the middle partition 2182 near the inlet section partition 2181 is arranged with a height difference from the second end of the inlet section partition 2181. The first end of the middle partition 2182 near the outlet section partition 2183 is arranged with a height difference from one end of the outlet section partition 2183. The second end of the middle partition 2182 near the outlet section partition 2183 is arranged with a height difference from the outlet section partition 21 The other end of 83 is set with a height difference, and the corresponding ends of the two adjacent middle partitions 2182 are set with a height difference, so that a seventh notch is formed on the outlet side of the seventh channel, the seventh channel is connected with the inlet of the eighth channel through the seventh notch, an eighth notch is formed on the outlet side of the eighth channel, the eighth channel is connected with the inlet of the ninth channel through the eighth notch, a ninth notch is formed on the outlet side of the ninth channel, the ninth channel is connected with the inlet of the tenth channel through the ninth notch, a tenth notch is formed on the outlet side of the tenth channel, the tenth channel is connected with the inlet of the eleventh channel through the tenth notch, an eleventh notch is formed on the outlet side of the eleventh channel, and the eleventh channel is connected with the inlet of the twelfth channel through the eleventh notch, so that the refrigerant in the second cooling section flows in an S shape along the circumference of the base body 21.

[0062] In an exemplary embodiment of the present application, a first fin 219 is provided in the first cooling section and / or the second cooling section, and both ends of the first fin 219 are disposed with a gap from the base end cover 22 .

[0063] In the embodiment of the present application, the provision of the first fins 219 can increase the heat exchange area of ​​the cooling section, accelerate the heat transfer rate, and further improve the cooling efficiency.

[0064] like Figure 5 As shown, a total of 12 channels are formed in the base body 21 , and two first fins 219 are provided in each channel. The two first fins 219 in each channel are spaced apart along the circumference of the channel.

[0065] In an exemplary embodiment of the present application, the stator support 30 includes a support body 31 and a stator end cover 32. The support body 31 has a receiving slot 313 extending along the circumference of the support body 31. The support body 31 is provided with a second inlet 311 and a second outlet 312. The stator end cover 32 is connected to the open end of the receiving slot 313, forming a second cooling channel 33 between the stator end cover 32 and the support body 31.

[0066] Preferably, a blocking plate 314 is provided in the accommodating groove 313, and the blocking plate 314 is connected between the two opposite groove walls of the accommodating groove 313, the bottom of the blocking plate 314 is connected to the groove bottom of the accommodating groove 313, and the top of the blocking plate 314 abuts against the stator end cover 32, and the second inlet 311 and the second outlet 312 are respectively arranged on both sides of the blocking plate 314.

[0067] This arrangement allows the refrigerant entering the second cooling channel 33 to circumferentially circle the accommodating groove 313 for sufficient heat exchange with the end windings of the stator body 10 , thereby improving heat dissipation efficiency.

[0068] like Figure 3 、 Figure 6 As shown, the support body 31 is annular in structure. The inner ring of the support body 31 is provided with a plurality of connectors 316. The support body 31 is connected to the stator base 20 via the connectors 316. The second inlet 311 and the second outlet 312 of the support body 31 are both arranged to extend axially along the support body 31, so that the second inlet 311 is inserted into the first outlet 216 of the stator base 20, and the second outlet 312 is inserted into the first inlet 215 of the stator base 20.

[0069] Furthermore, a second fin 315 is provided in the receiving groove 313 , and a gap is provided between the second fin 315 and the groove wall of the receiving groove 313 .

[0070] In the embodiment of the present application, the provision of the second fins 315 can increase the heat exchange area of ​​the second cooling channel 33 , accelerate the heat transfer rate, and further improve the cooling efficiency.

[0071] like Figure 6 As shown, the second fins 315 are arc-shaped and extend along the circumference of the receiving slot 313. The second fins 315 are provided in multiple groups, each of which is spaced apart along the circumference of the receiving slot 313. Each group of second fins 315 includes multiple second fins 315, which are spaced apart along the radial direction of the receiving slot 313.

[0072] According to another specific embodiment of the present application, a motor is provided, which includes a motor stator assembly such as the motor stator assembly in the above embodiment.

[0073] Specifically, the motor stator assembly includes: a stator body 10, a stator base 20, and a stator support 30. The stator base 20 is fixed to the housing, and the stator rotor is rotatably connected to the housing. The stator rotor is sleeved on the outside of the stator body 10. The stator body 10 is provided with a first cavity, which is arranged to pass through the stator body 10 in the axial direction. The stator base 20 is arranged in the first cavity. The stator base 20 is provided with a first cooling channel 23, which is arranged around the circumference of the stator body 10. The end of the stator base 20 is provided with a liquid inlet 213 and a liquid outlet 214 connected to the first cooling channel 23. The stator support 30 abuts the end winding of the stator body 10. The stator support 30 is provided with a second cooling channel 33, which extends along the circumference of the stator body 10 and is connected to the first cooling channel 23.

[0074] In an embodiment of the present application, the first cooling channel 23 and the second cooling channel 33 constitute a three-dimensional cooling network that is connected axially and circumferentially to perform all-round heat exchange on the stator winding, improve the heat dissipation efficiency of the motor, quickly dissipate the heat inside the motor, and avoid overheating.

[0075] For ease of description, spatially relative terms such as "above", "above", "on the upper surface of", "above", etc. may be used herein to describe the spatial positional relationship of a device or feature to other devices or features as shown in the figures. It should be understood that spatially relative terms are intended to include different orientations of the device in use or operation in addition to the orientation described in the figures. For example, if the device in the drawings is inverted, the device described as "above other devices or structures" or "above other devices or structures" will be positioned as "below other devices or structures" or "below other devices or structures". Thus, the exemplary term "above" can include both "above" and "below". The device can also be positioned in other different ways (rotated 90 degrees or in other orientations), and the spatially relative descriptions used here are interpreted accordingly.

[0076] In addition to the above, it should be noted that references to "one embodiment," "another embodiment," "an embodiment," and the like in this specification refer to specific features, structures, or characteristics described in conjunction with that embodiment as included in at least one embodiment generally described in this application. The appearance of the same expression in multiple places in the specification does not necessarily refer to the same embodiment. Furthermore, when a specific feature, structure, or characteristic is described in conjunction with any embodiment, it is intended that such feature, structure, or characteristic, when implemented in conjunction with other embodiments, also falls within the scope of the present invention.

[0077] In the above embodiments, the description of each embodiment has its own focus. For parts that are not described in detail in a certain embodiment, reference can be made to the relevant descriptions of other embodiments.

[0078] The foregoing description is merely a preferred embodiment of the present invention and is not intended to limit the present invention. Those skilled in the art will readily appreciate that various modifications and variations of the present invention are possible. Any modifications, equivalent substitutions, or improvements made within the spirit and principles of the present invention are intended to be within the scope of protection of the present invention.

Claims

1. A motor stator assembly, characterized in that: include: A stator body (10), wherein the stator body (10) is provided with a first cavity, and the first cavity is arranged to penetrate the stator body (10) in the axial direction; a stator base (20), the stator base (20) being disposed in the first cavity, the stator base (20) being provided with a first cooling channel (23), the first cooling channel (23) being arranged circumferentially around the stator body (10), and an end portion of the stator base (20) being provided with a liquid inlet (213) and a liquid outlet (214) communicating with the first cooling channel (23); A stator support (30) is provided, wherein the stator support (30) abuts against the end winding of the stator body (10), and the stator support (30) is provided with a second cooling channel (33), wherein the second cooling channel (33) extends along the circumference of the stator body (10), and the second cooling channel (33) is communicated with the first cooling channel (23).

2. The motor stator assembly according to claim 1, characterized in that The first cooling channel (23) comprises a plurality of cooling sections, wherein the plurality of cooling sections comprise: a first cooling section, the first cooling section being provided with a first outlet (216) and the liquid inlet (213), the liquid inlet (213) being in communication with the second inlet (311) of the second cooling channel (33) via the first outlet (216); The second cooling section is provided with a first inlet (215) and the liquid outlet (214), and the liquid outlet (214) is communicated with the second outlet (312) of the second cooling channel (33) through the first inlet (215).

3. The motor stator assembly according to claim 2, characterized in that: The stator base (20) comprises: A base body (21), the base body (21) is an annular structure, a third cavity (212) is formed between the outer circular surface and the inner circular surface of the base body (21), the third cavity (212) is arranged to pass through along the axial direction of the base body (21), and a plurality of isolation plates are provided in the third cavity (212), and the plurality of isolation plates separate the third cavity (212) into the first cooling section and the second cooling section; A base end cover (22), the base end cover (22) is connected to the end of the base body (21), and the base end cover (22) abuts against at least a portion of the isolation plate.

4. The motor stator assembly according to claim 3, characterized in that: The plurality of isolation plates are axially extending along the third cavity (212), and the plurality of isolation plates include: a main partition (217), the main partition (217) comprising a first partition (2171) and a second partition (2172), both ends of the first partition (2171) and the second partition (2172) being in contact with the base end cover (22) to separate the third cavity (212) into the first cooling section and the second cooling section; Auxiliary baffles (218), at least one auxiliary baffle (218) is provided in the first cooling section and / or the second cooling section, one end of each auxiliary baffle (218) is in contact with the base end cover (22), and the other end of each auxiliary baffle (218) is arranged with a gap between the base end cover (22), and the auxiliary baffles (218) separate the corresponding cooling section into a plurality of channel component sections, and adjacent channel component sections are connected at the end near one end of the stator body (10) so that the flow direction of the refrigerant in the adjacent channel component sections is opposite.

5. The motor stator assembly according to claim 4, characterized in that: The plurality of auxiliary baffles (218) disposed in at least one of the first cooling section and the second cooling section include: an inlet section baffle (2181), the inlet section baffle (2181) being arranged close to the first baffle (2171), a first end of the inlet section baffle (2181) being arranged flush with one end of the first baffle (2171), and a second end of the inlet section baffle (2181) being arranged at a height difference from the other end of the first baffle (2171); an outlet section baffle (2183), the outlet section baffle (2183) being arranged close to the second baffle (2172), the first end of the outlet section baffle (2183) being arranged flush with one end of the second baffle (2172), the second end of the outlet section baffle (2183) being arranged at a height difference with the other end of the second baffle (2172), wherein the first end of the outlet section baffle (2183) is arranged flush with the first end of the inlet section baffle (2181); The middle partition (2182) is at least one, and the middle partition (2182) is located between the inlet section partition (2181) and the outlet section partition (2183). The first end of the middle partition (2182) close to the inlet section partition (2181) is arranged with a height difference from one end of the inlet section partition (2181), and the second end of the middle partition (2182) close to the inlet section partition (2181) is arranged with a height difference from the inlet section partition (2183). The other end of the section partition (2181) is set with a height difference, the first end of the middle partition (2182) close to the outlet section partition (2183) is set with a height difference from one end of the outlet section partition (2183), the second end of the middle partition (2182) close to the outlet section partition (2183) is set with a height difference from the other end of the outlet section partition (2183), and the corresponding ends of the two adjacent middle partitions (2182) are set with a height difference.

6. The motor stator assembly according to any one of claims 3 to 5, characterized in that: A first fin (219) is provided in the first cooling section and / or the second cooling section, and both ends of the first fin (219) are arranged with a gap between them and the base end cover (22).

7. The motor stator assembly according to any one of claims 2 to 5, characterized in that: The stator support (30) comprises: A support body (31), the support body (31) having a receiving groove (313), the receiving groove (313) extending along the circumference of the support body (31), and the support body (31) being provided with the second inlet (311) and the second outlet (312); A stator end cover (32) is connected to the open end of the accommodating groove (313), and the second cooling channel (33) is formed between the stator end cover (32) and the support body (31).

8. The motor stator assembly according to claim 7, characterized in that: A blocking plate (314) is provided in the accommodating groove (313), the blocking plate (314) being connected between two opposite groove walls of the accommodating groove (313), the bottom of the blocking plate (314) being connected to the groove bottom of the accommodating groove (313), the top of the blocking plate (314) being in contact with the stator end cover (32), and the second inlet (311) and the second outlet (312) being respectively provided on both sides of the blocking plate (314).

9. The motor stator assembly according to claim 7, characterized in that: A second fin (315) is provided in the receiving groove (313), and a gap is provided between the second fin (315) and the groove wall of the receiving groove (313).

10. A motor comprising a motor stator assembly, characterized in that: The motor stator assembly is the motor stator assembly according to any one of claims 1 to 9.

Images