CN222301551U - Motor cooling system, motor and vehicle - Google Patents
Motor cooling system, motor and vehicle Download PDFInfo
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- CN222301551U CN222301551U CN202421104973.5U CN202421104973U CN222301551U CN 222301551 U CN222301551 U CN 222301551U CN 202421104973 U CN202421104973 U CN 202421104973U CN 222301551 U CN222301551 U CN 222301551U
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Abstract
本公开涉及一种电机冷却系统、电机及车辆，该电机冷却系统包括壳体组件、定子组件和第一密封件。壳体组件包括具有第一进液口的容纳腔；定子组件包括定子铁芯和定子绕组，定子铁芯包括定子槽，定子绕组设于定子槽内，定子槽与定子绕组之间形成供冷却液流通的冷却通道；第一密封件用于至少密封定子槽朝向定子组件的第一开口，且与容纳腔的侧壁围成储液腔，储液腔分别与冷却通道和第一进液口连通。该电机冷却系统能够直接对定子铁芯和定子绕组进行冷却，电机功率密度和扭矩密度得到有效提升，且无需额外零件(如油环/油管)，即可实现定子冷却最大化，冷却系统结构大大简化。
The present disclosure relates to a motor cooling system, a motor and a vehicle, wherein the motor cooling system comprises a housing assembly, a stator assembly and a first seal. The housing assembly comprises a housing cavity having a first liquid inlet; the stator assembly comprises a stator core and a stator winding, the stator core comprises a stator slot, the stator winding is arranged in the stator slot, and a cooling channel for the circulation of coolant is formed between the stator slot and the stator winding; the first seal is used to seal at least the first opening of the stator slot toward the stator assembly, and forms a liquid storage cavity with the side wall of the housing cavity, and the liquid storage cavity is respectively connected to the cooling channel and the first liquid inlet. The motor cooling system can directly cool the stator core and the stator winding, and the power density and torque density of the motor are effectively improved. Without the need for additional parts (such as oil rings/oil pipes), the stator cooling can be maximized, and the structure of the cooling system is greatly simplified.
Description
Technical Field
The disclosure relates to the technical field of motor cooling, in particular to a motor cooling system, a motor and a vehicle.
Background
The driving motor of the new energy automobile is mostly a permanent magnet synchronous motor, when the motor runs in a high-speed area, the heating of a motor rotor component is increased sharply, if the driving motor cannot be subjected to effective heat dissipation and cooling, the whole performance of the motor can be directly influenced, the running reliability, stability and efficiency of the motor are low, and the reliable and stable running of the automobile is seriously influenced.
In the related art, an oil pipe or an oil ring is additionally arranged in the motor to cool, so that the structure is complex and the cooling effect is limited.
Disclosure of utility model
The purpose of this disclosure is to provide a motor cooling system, motor and vehicle, and this motor cooling system can directly cool off stator core and stator winding, and motor power density and moment of torsion density obtain effectively promoting, and need not extra part (such as oil ring/oil pipe), can realize that the stator cooling is maximized, and cooling system structure is simplified greatly.
To achieve the above object, a first aspect of the present disclosure provides a motor cooling system, comprising:
A housing assembly including a receiving chamber having a first fluid inlet;
The stator assembly comprises a stator core and a stator winding, wherein the stator core comprises a stator slot, the stator winding is arranged in the stator slot, a cooling channel for cooling liquid to circulate is formed between the stator slot and the stator winding, and
And the first sealing piece is used for sealing at least the first opening of the stator groove, which faces the stator assembly, and the first sealing piece and the side wall of the accommodating cavity enclose a liquid storage cavity, and the liquid storage cavity is respectively communicated with the cooling channel and the first liquid inlet.
Optionally, the cooling channels extend axially through opposite sides of the stator assembly.
Optionally, the stator winding is formed with a groove portion facing away from the side wall of the stator slot, the cooling passage being formed between the groove portion and the side wall of the stator slot, and/or
The side wall of the stator slot is provided with a groove part facing back to the stator winding, and the cooling channel is formed between the groove part and the stator winding.
Optionally, the stator winding includes a plurality of copper wires disposed in each stator slot, and at least one cooling channel is disposed between each copper wire and the stator slot.
Optionally, the first seal is integrally injection molded with the stator core.
Optionally, the first sealing member includes a first sealing portion for sealing the first opening, and the first sealing portion corresponds to the first opening one by one;
The first sealing piece further comprises at least one second sealing part arranged at one end of the first sealing part, and the second sealing part is used for enclosing the liquid storage cavity with the side wall of the containing cavity.
Optionally, the second sealing part is provided with a second liquid inlet communicated with the second opening of the stator groove.
Optionally, the housing assembly includes a housing and an end cover, and the first liquid inlet is provided in the housing;
the end cap includes an extension toward the interior of the receiving cavity, the first seal, the extension, and the housing enclosing the reservoir.
Optionally, a sealing structure is arranged at the joint of the first sealing piece and the extension part.
Optionally, a sealing groove is formed on the side surface, facing the first sealing piece, of the extension part, and a second sealing piece is installed in the sealing groove and used for sealing between the extension part and the first sealing piece.
Optionally, the end cover is provided with an insulating layer at a position corresponding to the stator winding.
In a second aspect of the present disclosure, an electric machine is provided that includes a rotor assembly and the electric machine cooling system described above.
In a third aspect of the present disclosure, a vehicle is also provided, including the above-described motor.
Through above-mentioned technical scheme, the motor cooling system of this disclosure promptly, stator module and first sealing member set up in the holding intracavity of casing subassembly, and form cooling channel between stator core's stator groove and the stator winding, first opening in sealed stator groove of first sealing member and with hold the lateral wall in chamber and enclose into the stock solution chamber, coolant liquid (e.g. cooling oil) gets into the stock solution chamber by housing module's first inlet, and the cooling channel of entering cools off stator core and stator winding. According to the motor cooling system, the cooling channel is formed between the stator groove of the stator core and the stator winding, the first sealing piece is adopted for sealing, the stator core and the stator winding can be directly cooled, the motor power density and the torque density are effectively improved, additional parts (such as an oil ring/oil pipe) are not needed, the stator cooling maximization can be achieved, and the cooling system structure is greatly simplified.
Additional features and advantages of the present disclosure will be set forth in the detailed description which follows.
Drawings
The accompanying drawings are included to provide a further understanding of the disclosure, and are incorporated in and constitute a part of this specification, illustrate the disclosure and together with the description serve to explain, but do not limit the disclosure. In the drawings:
Fig. 1 is a schematic structural view of an electric motor provided in some embodiments of the present disclosure.
Fig. 2 is a cross-sectional view of a stator assembly of a motor cooling system provided by some embodiments of the present disclosure.
Fig. 3 is a schematic illustration of the mating of a stator winding with a first seal provided by some embodiments of the present disclosure.
Fig. 4 is a block diagram of a first seal provided by some embodiments of the present disclosure.
Fig. 5 is an enlarged view of a portion of a reservoir provided in some embodiments of the present disclosure.
Description of the reference numerals
100-Shell components, 101-accommodating cavities, 102-liquid storage cavities, 110-shells, 111-first liquid inlets, 120-end covers, 121-extension parts, 1211-sealing grooves and 122-insulating layers;
200-stator assembly, 201-cooling channel, 210-stator core, 211-stator slot, 2111-first opening, 2112-second opening, 220-stator winding, 221-copper wire, 2211-groove part;
300-first sealing element, 310-first sealing part, 320-second sealing part, 321-second liquid inlet and 330-third sealing part;
400-a second seal;
500-rotor assembly.
Detailed Description
Specific embodiments of the present disclosure are described in detail below with reference to the accompanying drawings. It should be understood that the detailed description and specific examples, while indicating and illustrating the disclosure, are not intended to limit the disclosure.
In this disclosure, unless otherwise indicated, terms of orientation such as "upper, lower, left, right" and "upper, lower, left, right" are used generally with respect to the figures, to "inner, outer" are used to refer to the inner and outer of the contour of the corresponding component, and to "distal, proximal" are used to refer to the relative structure or relative component away from or toward another structure or component. In addition, the terms "first," "second," and the like, as used in this disclosure, are used to distinguish one element from another element without sequence or importance. Furthermore, in the following description, when referring to the drawings, the same reference numerals in different drawings denote the same or similar elements unless otherwise explained. The foregoing definitions are provided for the purpose of illustrating and explaining the present disclosure and should not be construed as limiting the present disclosure.
Most of driving motors of the new energy automobiles are permanent magnet synchronous motors, when the motors run in a high-speed area, the heat of rotor parts of the motors is increased sharply, and when the heat is severe, magnetic steel is demagnetized, and power is attenuated/lost. Therefore, if the driving motor cannot be effectively cooled, the overall performance of the motor can be directly affected, so that the reliability, stability and efficiency of the motor operation are low, and the reliable and stable operation of the automobile is seriously affected. In the related art, an oil pipe or an oil ring is additionally arranged in the motor for cooling, so that the structure is complex and the cooling effect is limited.
The present disclosure is directed to a motor cooling system, a motor and a vehicle, which can directly cool a stator core 210 and a stator winding 220, effectively improve motor power density and torque density, and achieve maximum stator cooling without additional parts (e.g., oil rings/pipes), and greatly simplify a cooling system structure.
To achieve the above object, as shown in fig. 1 to 5, an embodiment of the present disclosure provides a motor cooling system including a housing assembly 100, a stator assembly 200, and a first seal 300. Wherein the housing assembly 100 comprises a receiving chamber 101 having a first liquid inlet 111. The stator assembly 200 includes a stator core 210 and a stator winding 220, the stator core 210 includes stator slots 211, the stator winding 220 is disposed in the stator slots 211, and cooling channels 201 for cooling fluid to circulate are formed between the stator slots 211 and the stator winding 220. The first seal 300 is used for sealing at least the first opening 2111 of the stator groove 211 facing the stator assembly 200, and encloses the liquid storage cavity 102 with the side wall of the accommodating cavity 101, and the liquid storage cavity 102 is respectively communicated with the cooling channel 201 and the first liquid inlet 111.
Through the above technical solution, that is, in the motor cooling system of the present disclosure, the stator assembly 200 and the first sealing member 300 are disposed in the accommodating cavity 101 of the housing assembly, and the cooling channel 201 is formed between the stator slot 211 of the stator core 210 and the stator winding 220, the first sealing member 300 seals the first opening 2111 of the stator slot 211 and encloses the liquid storage cavity 102 with the side wall of the accommodating cavity 101, and the cooling liquid (for example, cooling oil) enters the liquid storage cavity 102 from the first liquid inlet 111 of the housing assembly 100, and enters the cooling channel 201 to cool the stator core 210 and the stator winding 220. According to the motor cooling system disclosed by the disclosure, the cooling channel 201 is formed between the stator slot 211 of the stator core 210 and the stator winding 220, and the first sealing piece 300 is adopted for sealing, so that the stator core 210 and the stator winding 220 can be directly cooled, the motor power density and the torque density are effectively improved, and the stator cooling maximization can be realized without additional parts (such as an oil ring/an oil pipe), and the cooling system structure is greatly simplified.
The stator slots 211 are a plurality of slots disposed on the inner side wall of the stator core 210, and each stator slot 211 includes a first opening 2111 and two second openings disposed on two axially opposite sides of the stator slot 211, wherein the first opening 2111 is an opening facing the direction of the rotor assembly 500, and the second opening is an opening on two axially end faces of the stator core 210.
The first sealing member 300 is configured to seal the first opening 2111 of the stator slot 211, and the first sealing member 300 can extend at least one side end surface of the stator core 210, and enclose the liquid storage cavity 102 that communicates with the first liquid inlet 111 with the accommodating cavity 101 of the housing assembly 100, where the liquid storage cavity 102 is simultaneously connected with the cooling channel 201, so that a cooling liquid (such as cooling oil) can directly enter the cooling channel 201 to cool the stator core 210 and the stator winding 220 of the stator assembly 200.
In some embodiments, the cooling channels 201 extend axially through opposite sides of the stator assembly 200. That is, the liquid storage cavity 102 is located at one axial end of the stator core 210, and since the cooling passage penetrates through two opposite sides of the stator assembly 200, that is, the cooling liquid enters the closed liquid storage cavity 102 from the first liquid inlet 111 of the housing assembly 100, the cooling liquid cools the stator core 210 and one axial end of the stator winding 220, the cooling liquid passes through the cooling passage 201 enclosed by the stator winding 220 and the stator slot 211 of the stator core 210 in the liquid storage cavity 102, cools the stator winding 220 and the stator core 210 in the slots, and finally is sprayed out through the other end of the cooling passage 201, and cools the stator winding 220 at the other end.
It should be noted that, the housing assembly 100 is further provided with a liquid return port for recovering the cooling liquid, so that the cooling liquid flows out from the housing assembly 100 and can be recycled after heat exchange by external equipment.
The cooling channels 201 are configured in any suitable manner, as shown in fig. 2 and 5, in some embodiments of the present disclosure, groove portions 2211 are formed on the stator winding 220 facing away from the side walls of the stator slots 211, and the cooling channels 201 are formed between the groove portions 2211 and the side walls of the stator slots 211. In which a groove portion 2211 is formed on the stator winding 220, and a cooling passage 201 is formed between the groove portion 2211 and a side wall of the stator slot 211. The groove portion 2211 may be plural, and each groove portion 2211 forms one cooling passage 201. Accordingly, the plurality of cooling passages 201 can increase the contact area of the cooling liquid with the stator core 210 and the stator winding 220 pieces, improving the cooling effect.
In other embodiments, the stator slot 211 sidewall is formed with a groove portion 2211 facing back toward the stator winding 220, the groove portion 2211 and the stator winding 220 forming a cooling channel 201 therebetween. Similarly, the groove portion 2211 may be formed on the side wall of the stator slot 211, and the cooling passage 201 may be surrounded by the groove portion 2211 and the stator winding 220, and similarly, the groove portion 2211 may be plural, or plural cooling passages 201 having better cooling capability may be formed.
In still other embodiments, a groove portion 2211 facing away from the side wall of the stator slot 211 may be formed on the stator winding 220, and a groove portion 2211 facing away from the stator winding 220 may be formed on the side wall of the stator slot 211, and a plurality of cooling channels 201 may be formed for the cooling liquid to pass through.
As shown in fig. 2, in some embodiments, the stator winding 220 may include a plurality of copper wires 221 disposed in each stator slot 211, with at least one cooling channel 201 disposed between each copper wire 221 and the stator slot 211. Wherein, the copper wires 221 may have a rectangular or approximately rectangular cross section, and groove portions 2211 may be formed at opposite side walls of each copper wire 221 corresponding to the winding members, and the cooling passages 201 may be defined by the groove portions 2211 together with the side walls of the stator slots 211. For example, eight layers of copper wires 221 are provided in each stator slot 211 along the slot depth, and the groove portions 2211 are provided on opposite sides of adjacent two copper wires 221. Of course, it is also possible to provide on both sides at the same time, or the arrangement of the groove portions 2211 may be performed by those skilled in the art according to actual needs.
It should be noted that the groove 2211 may be provided on at least one side surface of the two adjacent copper wires 221 facing the other copper wire 221, or a cooling passage 201 may be formed for circulating a cooling liquid, and the stator core 210 may be indirectly cooled by cooling the copper wires 221 of the stator winding.
In some embodiments, the first sealing member 300 and the stator core 210 are integrally injection molded, that is, after the stator core 210 is manufactured, the stator core 210 is used as a base to perform integral injection molding, so that the cooling channel 201 in the stator slot 211 is sealed, and meanwhile, the first sealing member 300 may also be matched with the housing assembly 100 (including the housing 110 of the end cover 120) to form the liquid storage cavity 102 at one end of the stator assembly 200.
The material of the first sealing member 300 is preferably a thermoplastic material having high strength and high fluidity, including but not limited to PPS (polyphenylene sulfide, a novel high-performance thermoplastic resin, having advantages of high mechanical strength, high temperature resistance, chemical resistance, flame retardancy, good thermal stability, excellent electrical properties, etc.).
In order to seal the first opening 2111 of the stator groove 211 and form a reservoir, as shown in fig. 3, 4 and 5, in some embodiments, the first seal 300 includes a first seal portion 310 for sealing the first opening 2111, the first seal portion 310 corresponds to the first opening 2111 one by one, and the first seal 300 further includes at least one second seal portion 320 disposed at one end of the first seal portion 310, where the second seal portion 320 is configured to enclose the reservoir 102 with a sidewall of the accommodating chamber 101.
The first sealing portions 310 may be multiple, the two second sealing portions 320 may be respectively connected to opposite ends of the second sealing portions 320, and an annular structure is integrally formed, the first sealing portions 310 are in one-to-one correspondence with the first openings 2111 of the stator slots 211 and are sealed in the first openings 2111, the second sealing portions 320 are sealed and attached to an end surface of the stator core 210, and extend from the first sealing portions 310 along a radial direction toward an outer end of the stator core 210, and the stator core 210 and an inner side wall of the housing 110 are in interference fit or spline fit to achieve fixed connection.
The second sealing portion 320 is provided with a second liquid inlet 321 that communicates with the second opening of the stator groove 211, so that the cooling liquid in the liquid storage chamber 102 can enter the cooling channel 201 from the second liquid inlet 321 (one end of the cooling channel 201) toward the liquid storage chamber 102 and be discharged from the second liquid inlet 321 (the other end of the cooling channel 201) on the opposite side.
The housing assembly 100 may be configured in any suitable manner, as shown in fig. 1, and in some embodiments of the present disclosure, the housing assembly 100 may include a housing 110 and an end cap 120, the first fluid inlet 111 being provided in the housing 110, the end cap 120 including an extension 121 facing the interior of the receiving cavity 101, the first seal 300, the extension 121, and the housing 110 enclosing the fluid reservoir 102. Wherein, the end cover 120 is detachably and sealingly mounted at the left opening of the housing 110, and both form the accommodating cavity 101, the inner wall of the end cover 120 is formed with an extension portion 121 (which may specifically be in an annular structure) facing the stator core 210, and the extension portion 121 may be sealingly connected with the second sealing portion 320 of the first sealing member 300, so that a liquid storage cavity 102 is formed between the end cover 120, the first sealing member 300 and the housing 110, and the liquid storage cavity 102 is respectively communicated with the first liquid inlet 111 and the second liquid inlet 321 (located at the left side of the cooling channel 201).
It should be noted that, in order to achieve better connection and sealing, in some embodiments, the first sealing member 300 further includes a third sealing portion 330 of the second sealing portion 320 extending away from the first sealing portion 310 and toward the end cover 120, and the extending portion 121 of the end cover 120 is in sealing connection with the third sealing portion 330, and the second sealing member 400, the end cover 120 and the housing 110 are combined to form the oil storage cavity.
To better achieve a sealing effect between the first seal 300 and the extension 121, in some embodiments, the junction of the first seal 300 and the extension 121 is provided with a sealing structure. When the first seal 300 includes the third seal portion 330, the third seal portion 330 and the extension portion 121 may be in overlapping relation, and a sealing structure may be disposed between the extension portion 121 and the third seal portion 330 for sealing connection therebetween.
As shown in fig. 5, in some embodiments, a sealing groove 1211 is formed in a side of the extension 121 facing the first seal 300, and a second seal 400 is installed in the sealing groove 1211, and the second seal 400 is used to seal between the extension 121 and the first seal 300.
When the first seal 300 includes the first seal portion 310, the second seal portion 320, and the third seal portion 330, the third seal portion 330 is sleeved on the circumferential outer side of the extension portion 121, the extension portion 121 is formed with a seal groove 1211, and the second seal 400 is installed in the seal groove 1211, so that the extension portion 121 and the third seal portion 330 can be connected in a sealing manner. It should be noted that, the second seal 400 may be, for example, a sealing ring or a sealing strip.
In some embodiments, when the distance between the stator winding 220 and the end case is small, in order to improve insulation between the two, as shown in fig. 5, in some embodiments, the end cover 120 is provided with an insulating layer 122 at a position corresponding to the stator winding 220. The insulating layer 122 may be formed by insulating and spraying on the surface of the extension 121 facing the stator winding 220 and the surface of the end cover 120 facing the stator winding 220. It should be noted that, the surface of the end cap 120 may be insulation coated to ensure an electrical gap, such as epoxy coating, plastic injection molding, ceramic coating, etc., according to the design.
Embodiments of the present disclosure provide an electric machine that includes a rotor assembly 500 and the motor cooling system described above.
The embodiments of the present disclosure also provide a vehicle including the above-mentioned motor, and therefore, the vehicle also has all the advantages of the above-mentioned motor, which will not be described herein.
The embodiment of the present disclosure provides a motor cooling system, a motor, and a vehicle, in which first, a first seal 300 is formed by integrally injection molding in a stator slot 211 of a stator core 210 and an end surface of the stator core 210, so that a cooling channel 201 is formed in the stator slot 211 to cool the stator core 210 and a stator winding 220, and cooling oil is prevented from entering an air gap between a stator assembly 200 and a rotor assembly 500.
Next, the first seal 300, the end cap 120, and the housing 110 form a reservoir 102 at the end of the stator core 210, i.e., cooling the stator winding 220 and the stator core 210, or may communicate with the cooling channel 201 to provide a cooling fluid to further cool the stator winding 220 and the stator core 210.
Furthermore, the insulating coating of the end cap 120 to form the insulating layer 122 improves the insulating properties.
Finally, the copper wire 221 of the stator winding 220 is processed by the groove 2211, and is enclosed with the stator groove 211 to form a cooling channel 201 in the stator groove 211, the cooling liquid (cooling oil) enters from the first liquid inlet 111 of the shell 110 and enters into the liquid storage cavity 102 to cool the end part of the stator winding 220 and the stator core 210, the cooling liquid in the liquid storage cavity 102 cools the stator winding 220 and the stator core 210 in the groove through the cooling channel 201 formed by the groove 2211 of the winding copper wire 221 and the stator groove 211, and finally the other side stator winding 220 is axially sprayed and cooled through the other end part. The cooling channel 201 formed in the liquid storage cavity 102 and the stator groove 211 is adopted to directly cool the stator core 210 and the stator winding 220, additional parts are not required to be arranged, the maximization of cooling of the stator assembly 200 can be achieved, the structure is simplified, and meanwhile, the power density and the torque density of the motor can be effectively improved.
The preferred embodiments of the present disclosure have been described in detail above with reference to the accompanying drawings, but the present disclosure is not limited to the specific details of the embodiments described above, and various simple modifications may be made to the technical solutions of the present disclosure within the scope of the technical concept of the present disclosure, and all the simple modifications belong to the protection scope of the present disclosure.
In addition, the specific features described in the foregoing embodiments may be combined in any suitable manner, and in order to avoid unnecessary repetition, the present disclosure does not further describe various possible combinations.
Moreover, any combination between the various embodiments of the present disclosure is possible as long as it does not depart from the spirit of the present disclosure, which should also be construed as the disclosure of the present disclosure.
Claims (13)
1. A motor cooling system, comprising:
A housing assembly including a receiving chamber having a first fluid inlet;
The stator assembly comprises a stator core and a stator winding, wherein the stator core comprises a stator slot, the stator winding is arranged in the stator slot, a cooling channel for cooling liquid to circulate is formed between the stator slot and the stator winding, and
And the first sealing piece is used for sealing at least the first opening of the stator groove, which faces the stator assembly, and the first sealing piece and the side wall of the accommodating cavity enclose a liquid storage cavity, and the liquid storage cavity is respectively communicated with the cooling channel and the first liquid inlet.
2. The electric machine cooling system of claim 1 wherein the cooling channels extend axially through opposite sides of the stator assembly.
3. The motor cooling system of claim 2, wherein the stator winding has a groove portion formed thereon facing away from a side wall of the stator slot, the groove portion and the side wall of the stator slot forming the cooling passage therebetween, and/or
The side wall of the stator slot is provided with a groove part facing back to the stator winding, and the cooling channel is formed between the groove part and the stator winding.
4. A motor cooling system according to claim 3, wherein said stator winding includes a plurality of copper wires disposed in each of said stator slots, at least one of said cooling passages being disposed between each of said copper wires and said stator slots.
5. The motor cooling system of claim 1, wherein the first seal is integrally injection molded with the stator core.
6. The motor cooling system of claim 1, wherein the first seal includes a first seal portion for sealing the first opening, the first seal portion in one-to-one correspondence with the first opening;
The first sealing piece further comprises at least one second sealing part arranged at one end of the first sealing part, and the second sealing part is used for enclosing the liquid storage cavity with the side wall of the containing cavity.
7. The motor cooling system of claim 6, wherein the second seal is provided with a second liquid inlet in communication with the second opening of the stator slot.
8. The motor cooling system of any one of claims 1-7, wherein the housing assembly includes a housing and an end cap, the first fluid inlet being provided in the housing;
the end cap includes an extension toward the interior of the receiving cavity, the first seal, the extension, and the housing enclosing the reservoir.
9. The motor cooling system of claim 8, wherein a seal is provided at a junction of the first seal and the extension.
10. The motor cooling system of claim 9, wherein a side of the extension facing the first seal is formed with a seal groove, a second seal being mounted within the seal groove, the second seal being configured to seal between the extension and the first seal.
11. The motor cooling system of claim 8, wherein the end caps are provided with an insulating layer at a location corresponding to the stator windings.
12. An electric machine comprising a rotor assembly and the electric machine cooling system of any one of claims 1-11.
13. A vehicle comprising the electric machine of claim 12.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202421104973.5U CN222301551U (en) | 2024-05-20 | 2024-05-20 | Motor cooling system, motor and vehicle |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202421104973.5U CN222301551U (en) | 2024-05-20 | 2024-05-20 | Motor cooling system, motor and vehicle |
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| Publication Number | Publication Date |
|---|---|
| CN222301551U true CN222301551U (en) | 2025-01-03 |
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| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202421104973.5U Active CN222301551U (en) | 2024-05-20 | 2024-05-20 | Motor cooling system, motor and vehicle |
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| Country | Link |
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| CN (1) | CN222301551U (en) |
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