A sealing structure for a liquid-cooled motor and a liquid-cooled motor

Abstract

This utility model discloses a sealing structure for a liquid-cooled motor and a liquid-cooled motor. The sealing structure includes: a rotor; a stator; a bearing disposed between the rotor and the stator, the rotor, stator, and bearing forming a receiving space for accommodating coolant and / or components; and a sealing assembly disposed between the rotor and the stator, on the side of the bearing facing the receiving space. The sealing assembly includes a dynamic sealing ring and a static sealing ring, the dynamic sealing ring being fitted against the rotor and the static sealing ring being fitted against the stator, with viscous grease filling the space between the dynamic and static sealing rings. The liquid-cooled motor includes: a rotor assembly, a stator assembly, a liquid-cooled chamber, and the aforementioned sealing structure. The rotor assembly includes a rotor, the stator assembly includes a stator, and the liquid-cooled chamber is located within the receiving space. This design achieves excellent sealing of the coolant and prevents frequent component replacements due to rotational friction, thus avoiding impact on the output torque of the liquid-cooled motor and ensuring its performance.

Description

Technical Field

[0001] This utility model relates to the field of liquid-cooled motor technology, specifically to a liquid-cooled motor sealing structure and a liquid-cooled motor. Background Technology

[0002] Liquid-cooled motors use circulating coolant to remove the heat generated by the motor, ensuring its normal operation. Compared to air-cooled motors, liquid-cooled motors have higher heat dissipation efficiency, effectively reducing the internal temperature of the motor, minimizing demagnetization, improving motor performance, thereby extending service life and enhancing operational stability and safety.

[0003] Liquid-cooled motors are used in numerous fields, including robotics, electric vehicles, electric motorcycles, electric bicycles, servers, communication equipment, and industrial applications, to ensure stable operation. During operation, the coolant inside a liquid-cooled motor may leak along the shaft, reducing its heat dissipation capacity, accelerating the aging of internal components, and degrading performance. Furthermore, the conductivity of the coolant can lead to electrical faults such as short circuits and leakage, and the corrosive components in the coolant can cause metal parts to rust and be damaged. Therefore, the sealing of the coolant in a liquid-cooled motor is crucial. In related technologies, oil seals are used to achieve coolant sealing in liquid-cooled motors. However, during operation, there is significant friction between the oil seal and the shaft. On the one hand, the oil seal's lifespan is short due to frictional wear, requiring frequent replacement; on the other hand, friction reduces the motor's output torque, thus affecting the motor's performance. Utility Model Content

[0004] The purpose of this utility model is to disclose a sealing structure and a liquid-cooled motor, which can achieve good sealing of the coolant and avoid frequent replacement of parts due to rotational friction and affect the output torque of the liquid-cooled motor, so as to ensure the working performance of the liquid-cooled motor.

[0005] To achieve the above objectives, in a first aspect, this utility model discloses a liquid-cooled motor sealing structure, comprising:

[0006] Rotor;

[0007] stator;

[0008] The bearing is located between the rotor and the stator, and the rotor, stator and bearing together form a receiving space that can be used to accommodate coolant and / or components;

[0009] A sealing assembly is disposed between the rotor and the stator, and on the side of the bearing facing the receiving space. The sealing assembly includes a dynamic sealing ring and a static sealing ring. The dynamic sealing ring is fitted to the rotor, and the static sealing ring is fitted to the stator. The space between the dynamic sealing ring and the static sealing ring is filled with viscous grease.

[0010] As an alternative implementation, the viscous grease has a low-flow, viscous paste structure.

[0011] As an optional implementation, the rotor and stator are sleeved together, and bearings are provided at both axial ends between the rotor and stator.

[0012] As an optional implementation, a sealing ring is provided between the dynamic sealing ring and the rotor, and / or between the static sealing ring and the stator.

[0013] As an alternative implementation, a bearing cover plate is provided on the side of the bearing facing away from the receiving space, and the bearing cover plate is fixed to the side of the bearing near the stator.

[0014] Secondly, this utility model discloses a liquid-cooled motor, including: a rotor assembly, a stator assembly, a liquid-cooled chamber, and the aforementioned liquid-cooled motor sealing structure. The rotor assembly includes a rotor, the stator assembly includes a stator, and the liquid-cooled chamber is disposed in the accommodating space.

[0015] As an optional implementation, the rotor assembly includes a rotor and a permanent magnet, the stator assembly includes a stator and motor windings, and the liquid cooling chamber is disposed between the rotor and the stator;

[0016] When the liquid-cooled motor is an internal rotor motor, the rotor, permanent magnet, motor windings and stator are arranged sequentially from the inside to the outside.

[0017] When the liquid-cooled motor is an external rotor motor, the rotor, permanent magnet, motor windings and stator are arranged sequentially from the outside to the inside.

[0018] As an optional implementation, the rotor assembly and / or stator assembly are provided with cooling channels, the stator is provided with a liquid inlet and a liquid outlet, and the cooling channels are connected to the liquid inlet and the liquid outlet via a liquid cooling chamber.

[0019] As an alternative implementation, the cooling channel is located on the side wall of the rotor facing the permanent magnet, and / or the cooling channel is located on the side wall of the stator facing the motor winding.

[0020] As an optional implementation, liquid pumps are installed at the inlet and outlet to power the flow of coolant.

[0021] Compared with the prior art, the beneficial effects of this utility model are as follows:

[0022] The sealing assembly includes a dynamic sealing ring, a static sealing ring, and a viscous grease. The viscous grease provides a viscous seal between the dynamic and static sealing rings. During rotor rotation, the centrifugal force of the coolant is balanced by the gravity of the viscous grease, preventing the dynamic sealing ring from separating from the rotor. This ensures that the static sealing ring maintains stationary contact with the stator, while the dynamic sealing ring maintains rotational contact with the rotor, thus guaranteeing the sealing effect of the containment space and preventing coolant leakage. Furthermore, this sealing structure avoids frictional wear on the dynamic and static sealing rings and the viscous grease, eliminating the need for frequent replacements. Simultaneously, the rotational seal between the dynamic sealing ring and the rotor prevents friction from affecting the rotor's rotational speed. Therefore, the liquid-cooled motor features excellent sealing performance, long service life, and stable operating performance. Attached Figure Description

[0023] To more clearly illustrate the technical solutions in the embodiments of this utility model, the drawings used in the embodiments will be briefly introduced below. Obviously, the drawings described below are only some embodiments of this utility model. For those skilled in the art, other drawings can be obtained based on these drawings without creative effort.

[0024] Figure 1 This is a schematic diagram of the internal rotor liquid-cooled motor of this utility model;

[0025] Figure 2 This is an axial sectional view of the internal rotor liquid-cooled motor of this utility model;

[0026] Figure 3 This is a schematic diagram of the sealing structure of the internal rotor liquid-cooled motor of this utility model;

[0027] Figure 4 This is a schematic diagram of the dynamic sealing ring and the static sealing ring in the internal rotor liquid-cooled motor of this utility model;

[0028] Figure 5 This is an exploded view of the internal rotor liquid-cooled motor of this utility model.

[0029] Figure 6 This is a schematic diagram of the rotor structure in the internal rotor liquid-cooled motor of this utility model;

[0030] Figure 7 This is an axial sectional view of the external rotor liquid-cooled motor of this utility model;

[0031] Figure 8 This is a schematic diagram of the stator structure in the external rotor liquid-cooled motor of this utility model;

[0032] Figure 9 This is a schematic diagram of the rotor structure in the external rotor liquid-cooled motor of this utility model.

[0033] Explanation of key figure labels:

[0034] 1. Rotor assembly; 11. Rotor; 12. Permanent magnet; 2. Stator assembly; 21. Stator; 211. Liquid inlet; 212. Liquid outlet; 22. Motor winding; 3. Bearing; 4. Sealing assembly; 41. Dynamic sealing ring; 42. Static sealing ring; 43. Viscous grease; 44. Sealing ring; 5. Bearing cover plate; 6. Liquid cooling chamber; 7. Cooling channel; 8. Liquid pump. Detailed Implementation

[0035] The technical solutions of the present utility model will be clearly and completely described below with reference to the accompanying drawings of the embodiments. Obviously, the described embodiments are only some embodiments of the present utility model, and not all embodiments. Based on the embodiments of the present utility model, all other embodiments obtained by those of ordinary skill in the art without creative effort are within the protection scope of the present utility model.

[0036] In this invention, the terms "upper," "lower," "left," "right," "front," "rear," "top," "bottom," "inner," "outer," "middle," "vertical," "horizontal," "lateral," and "longitudinal" indicate the orientation or positional relationship based on the orientation or positional relationship shown in the accompanying drawings. These terms are primarily for the purpose of better describing this invention and its embodiments, and are not intended to limit the indicated device, element, or component to having a specific orientation, or to be constructed and operated in a specific orientation.

[0037] Furthermore, in addition to indicating location or positional relationship, some of the aforementioned terms may also have other meanings. For example, the term "above" may also be used in some cases to indicate a certain dependency or connection relationship. Those skilled in the art can understand the specific meaning of these terms in this utility model according to the specific circumstances.

[0038] Furthermore, the terms "installation," "setup," "equipped with," "connection," and "linked" should be interpreted broadly. For example, they can refer to a fixed connection, a detachable connection, or an integral structure; they can refer to a mechanical connection or an electrical connection; they can refer to a direct connection or an indirect connection through an intermediate medium, or an internal connection between two devices, components, or parts. Those skilled in the art can understand the specific meaning of these terms in this utility model based on the specific circumstances.

[0039] Furthermore, the terms "first," "second," etc., are primarily used to distinguish different devices, elements, or components (which may be the same or different in specific type and construction), and are not intended to indicate or imply the relative importance or quantity of the indicated devices, elements, or components. Unless otherwise stated, "a plurality of" means two or more.

[0040] The technical solution of this utility model will be further described below with reference to the embodiments and accompanying drawings.

[0041] See Figure 2-3 and Figure 7 This application provides a liquid-cooled motor sealing structure, including: a rotor 11, a stator 21, a bearing 3, and a sealing assembly 4. The bearing 3 is disposed between the rotor 11 and the stator 21, and the rotor 11, stator 21, and bearing 3 together form a receiving space for accommodating coolant and / or components. The sealing assembly 4 is disposed between the rotor 11 and the stator 21, and is located on the side of the bearing 3 facing the receiving space. The sealing assembly 4 includes a dynamic sealing ring 41 and a static sealing ring 42. The dynamic sealing ring 41 is disposed in contact with the rotor 11, and the static sealing ring 42 is disposed in contact with the stator 21. The space between the dynamic sealing ring 41 and the static sealing ring 42 is filled with viscous grease 43.

[0042] In a liquid-cooled motor, the stator 21 is a stationary structure, while the rotor 11 can rotate under electromagnetic drive to generate torque that drives the load. The rotor 11 rotates relative to the stator 21, and the rotor 11 and stator 21 are connected by a bearing 3. The fixed end of the bearing 3 is connected to the stator 21, and the rotating end of the bearing 3 is connected to the rotor 11. This allows the rotor 11 to rotate smoothly relative to the stator 21, preventing contact and friction between the stator 21 and the rotor 11 from affecting the rotation of the rotor 11.

[0043] The sealing assembly 4 includes a dynamic sealing ring 41 and a static sealing ring 42. Theoretically, the dynamic sealing ring 41 is set tightly against the rotor 11, and the static sealing ring 42 is set tightly against the stator 21, thereby achieving a seal through the contact sealing connection between the dynamic sealing ring 41 and the static sealing ring 42. However, when the liquid-cooled motor is working, the rotation of the rotor 11 and the following movement of the coolant in the housing space will generate centrifugal force, causing the dynamic sealing ring 41 to move away from the rotor 11 and the housing space, thus creating a risk of leakage. In this embodiment, a viscous grease 43 is provided between the dynamic sealing ring 41 and the static sealing ring 42. The gravity of the viscous grease causes the dynamic sealing ring 41 to move closer to the rotor 11 and the housing space, that is, gravity is used to balance the centrifugal force to ensure the rotational sealing effect between the dynamic sealing ring 41 and the rotor 11.

[0044] Thus, the sealing assembly 4 in this embodiment includes a dynamic sealing ring 41, a static sealing ring 42, and a viscous grease 43. The viscous grease 43 can viscously seal between the dynamic sealing ring 41 and the static sealing ring 42. During the rotation of the rotor 11, the centrifugal force of the coolant can be balanced by the gravity of the viscous grease 43 to prevent the dynamic sealing ring 41 from separating from the rotor 11, so that the static sealing ring 42 and the stator 21 remain in static contact, and the dynamic sealing ring 41 and the rotor 11 remain in rotational contact, thereby ensuring the sealing effect of the accommodating space and preventing coolant leakage.

[0045] It should be noted that the amount of viscous grease 43 used to balance the centrifugal force of the rotor 11 and the coolant during the rotation process is determined by the rotation performance of the liquid-cooled motor and the amount of coolant. Different models of liquid-cooled motors require different amounts of viscous grease 43, and no specific limit is made here.

[0046] In one or more embodiments, the viscous grease 43 has a low-flow, viscous paste structure. The composition of the viscous grease 43 is not specifically required, as long as it does not react with the coolant or the components of the liquid-cooled motor. The viscous grease 43 needs to have low flowability and high viscosity to seal between the dynamic sealing ring 41 and the static sealing ring 42, preventing the viscous grease 43 from flowing to other components, thereby ensuring the sealing effect of the sealing assembly 4.

[0047] In one or more embodiments, the rotor 11 and the stator 21 are sleeved together, and bearings 3 are provided at both axial ends between the rotor 11 and the stator 21. (See also...) Figure 2 The liquid-cooled motor can be an internal rotor motor, with a rotor 11 as the central shaft and a stator 21 as the outer casing. The shaft can rotate relative to the outer casing. Bearings 3 are fitted at both axial ends of the shaft. The rotating end of the bearing 3 is located close to the shaft, and the fixed end of the bearing 3 is located close to the outer casing to ensure the rotational effect of the shaft. (See reference...) Figure 7 The liquid-cooled motor can also be an external rotor motor, where the rotor 11 is the rotor housing and the stator 21 is the center fixed shaft. The rotor housing can rotate relative to the fixed shaft. Bearings 3 are sleeved at both ends of the fixed shaft. The rotating end of the bearing 3 is set close to the rotor housing, and the fixed end of the bearing 3 is set close to the fixed shaft to ensure the rotation effect of the rotor housing.

[0048] Whether it's an internal rotor motor or an external rotor motor, the housing space is formed within the area enclosed by the rotor 11, stator 21, and bearing 3. This space can be used to house structures such as permanent magnets 12 and motor windings 22, and can also contain coolant for heat dissipation. A sealing assembly 4 is used to achieve a sealing effect. The sealing assembly 4 is located on the side of the bearing 3 facing the housing space. The dynamic sealing ring 41 and the static sealing ring 42 extend towards each other, forming extensions. The extensions of the dynamic sealing ring 41 and the static sealing ring 42 are axially overlapped, forming a housing cavity between the two extensions and the bearing 3 for filling with viscous grease 43. Thus, when the liquid-cooled motor is operating, the rotation of the rotor 11 and the following movement of the coolant in the housing space generate centrifugal force, causing the dynamic sealing ring 41 to move away from the rotor 11 and the housing space. The gravity of the viscous grease causes the dynamic sealing ring 41 to move closer to the rotor 11 and the housing space, thereby balancing the centrifugal force through gravity and ensuring a rotational sealing effect between the dynamic sealing ring 41 and the rotor 11. For example, see... Figure 3 and Figure 4 In the internal rotor motor, the static sealing ring 42 is located near the outer casing, and the dynamic sealing ring 41 is located near the shaft. The inner wall of the static sealing ring 42 extends toward the dynamic sealing ring 41, and the outer wall of the dynamic sealing ring 41 extends toward the static sealing ring 42, so that each forms an extension and is axially stacked. Coolant is placed on the side of the two extensions facing the receiving space, and viscous grease 43 is filled on the side of the two extensions facing the bearing 3. The gravity of the viscous grease 43 is used to press the static sealing ring 42 and the dynamic sealing ring 41 and balance the centrifugal force when the internal rotor motor is working, thereby achieving a good sealing effect. Figure 7 The sealing principle of the external rotor motor shown is the same, and will not be repeated here.

[0049] Based on the above structure, see [link / reference] Figure 2-5 as well as Figure 7 A sealing ring 44 is provided between the dynamic sealing ring 41 and the rotor 11, and / or between the static sealing ring 42 and the stator 21. The sealing ring 44 may be provided only between the dynamic sealing ring 41 and the rotor 11, or only between the static sealing ring 42 and the stator 21. Alternatively, the sealing ring 44 may be provided between both the dynamic sealing ring 41 and the rotor 11, and between both the static sealing ring 42 and the stator 21, to further enhance the sealing effect. In this embodiment, a sealing ring 44 is provided between the dynamic sealing ring 41 and the rotor 11, and between both the static sealing ring 42 and the stator 21. For example, Figure 3 In the internal rotor motor shown, sealing rings 44 are provided between the outer casing and the static sealing ring 42, and between the rotating shaft and the dynamic sealing ring 41. Figure 7 The external rotor motor shown has sealing rings 44 between the rotor housing and the dynamic sealing ring 41, and between the fixed shaft and the static sealing ring 42.

[0050] In one or more embodiments, a bearing cover plate 5 is provided on the side of the bearing 3 facing away from the receiving space, and the bearing cover plate 5 is fixed to the side of the bearing 3 near the stator 21. The bearing cover plate 5 is used to position the bearing 3 to prevent the bearing 3 from deviating and affecting the rotation effect of the liquid-cooled motor. The bearing cover plate 5 is located at the fixed end of the bearing 3, see reference. Figure 1 and Figure 2 The bearing cover 5 is located near the outer casing. (See reference...) Figure 7 The bearing cover plate 5 is positioned close to the fixed shaft to avoid affecting the rotating end of the bearing 3 and the rotation of the rotor 11.

[0051] In addition, see Figure 2 and Figure 7 This application also provides a liquid-cooled motor, including: a rotor assembly 1, a stator assembly 2, a liquid-cooled chamber 6, and the above-mentioned liquid-cooled motor sealing structure. The rotor assembly 1 includes a rotor 11, the stator assembly 2 includes a stator 21, and the liquid-cooled chamber 6 is disposed in the accommodating space.

[0052] The rotor 11 is part of the rotor assembly 1, and the stator 21 is part of the stator assembly 2. After the rotor assembly 1 and stator assembly 2 are assembled, a liquid-cooled chamber 6 is provided to contain the coolant for heat dissipation. The coolant is contained within the liquid-cooled chamber 6, which is sealed by a sealing assembly 4 consisting of a dynamic sealing ring 41, a static sealing ring 42, viscous grease 43, and a sealing ring 44. This provides a good sealing effect and prevents coolant leakage. Furthermore, during the operation of the liquid-cooled motor, the friction between the sealing assembly 4 and the rotor 11 is minimal, which avoids wear on the sealing assembly 4 and its impact on the output torque of the liquid-cooled motor, thereby ensuring the service life and performance of the liquid-cooled motor.

[0053] In one or more embodiments, the rotor assembly 1 includes a rotor 11 and a permanent magnet 12, the stator assembly 2 includes a stator 21 and a motor winding 22, and the liquid cooling chamber 6 is disposed between the rotor 11 and the stator 21; when the liquid-cooled motor is an inner rotor motor, the rotor 11, the permanent magnet 12, the motor winding 22 and the stator 21 are arranged sequentially from the inside to the outside; when the liquid-cooled motor is an outer rotor motor, the rotor 11, the permanent magnet 12, the motor winding 22 and the stator 21 are arranged sequentially from the outside to the inside.

[0054] The liquid-cooled motor in this embodiment can be either an internal rotor motor or an external rotor motor. When the liquid-cooled motor is an internal rotor motor, the shaft, permanent magnet 12, motor winding 22, and housing are sequentially arranged from the inside out, with the liquid-cooled chamber 6 located between the shaft and the housing. When the liquid-cooled motor is an external rotor motor, the rotor housing, permanent magnet 12, motor winding 22, and fixed shaft are sequentially arranged from the outside in, with the liquid-cooled chamber 6 located between the rotor housing and the fixed shaft. The above-described sealing structure applies to both internal and external rotor motors.

[0055] In one or more embodiments, the rotor assembly 1 and / or stator assembly 2 are provided with cooling channels 7, and the stator 21 is provided with a liquid inlet 211 and a liquid outlet 212. The cooling channels 7 are connected to the liquid inlet 211 and the liquid outlet 212 via a liquid-cooled chamber 6. The liquid inlet 211 is used for the inflow of coolant, and the liquid outlet 212 is used for the outflow of coolant. The coolant flows into the liquid-cooled chamber 6 through the liquid inlet 211, and then flows through the cooling channels 7 to absorb heat and cool the liquid-cooled motor. After absorbing heat, the high-temperature coolant flows out through the liquid outlet 212 and enters the refrigeration module for heat dissipation and cooling, so that the coolant at a lower temperature can flow back into the liquid-cooled motor, thereby realizing the cyclic cooling of the liquid-cooled motor. The refrigeration module can be a semiconductor refrigeration module, a magnetic refrigeration module, etc. (See also...) Figure 1 and Figure 5 In the internal rotor motor, the liquid inlet 211 and the liquid outlet 212 are mounted on the outer casing, which can be formed by an upper casing and a lower casing. (See reference...) Figure 7 In an external rotor motor, the liquid inlet 211 and the liquid outlet 212 are mounted on a fixed shaft.

[0056] Cooling channels 7 may be provided only in stator assembly 2, only in rotor assembly 1, or in both stator assembly 2 and rotor assembly 1, depending on the cooling requirements. In one or more embodiments, cooling channels 7 are provided on the sidewall of rotor 11 facing the permanent magnet 12, and / or, cooling channels 7 are provided on the sidewall of stator 21 facing the motor winding 22. Cooling channels 7 may be formed recessed in the sidewall of rotor 11 and / or stator 21, or protrusions may be provided at intervals on the sidewall of rotor 11 and / or stator 21 to form cooling channels 7 between the protrusions. For example, see [reference needed]. Figure 6 In an internal rotor motor, longitudinal and transverse cooling channels 7 are formed on the outer wall of the shaft. (See also...) Figure 8 and Figure 9 In an external rotor motor, longitudinal cooling channels 7 are formed on the inner sidewall of the rotor housing and the outer sidewall of the fixed shaft. The structure, shape, and extension direction of the cooling channels 7 can be set according to requirements, and can be wavy, inclined, etc.

[0057] In one or more embodiments, see Figure 2 and Figure 7 A liquid pump 8 is installed at the inlet 211 and outlet 212, which provides power for the flow of coolant. The liquid-cooled motor can be connected to a refrigeration module to form a liquid-cooled circulation system. The liquid pump 8 drives the coolant to circulate between the liquid-cooled motor and the refrigeration module, so that the coolant absorbs heat in the liquid-cooled motor and is then dissipated by the refrigeration module, thereby ensuring that the coolant can circulate to cool the liquid-cooled motor.

[0058] The above provides a detailed description of a liquid-cooled motor sealing structure and a liquid-cooled motor according to embodiments of this utility model. Specific examples have been used to illustrate the principles and implementation methods of this utility model. The descriptions of the above embodiments are only for the purpose of helping to understand the liquid-cooled motor sealing structure and the liquid-cooled motor and their core ideas. At the same time, for those skilled in the art, there will be changes in the specific implementation methods and application scope based on the ideas of this utility model. Therefore, the content of this specification should not be construed as a limitation of this utility model.

Claims

1. A sealing structure for a liquid-cooled motor, characterized in that, include: Rotor; stator; A bearing is disposed between the rotor and the stator, and the rotor, the stator and the bearing together form a receiving space that can be used to accommodate coolant and / or components; A sealing assembly is disposed between the rotor and the stator, and on the side of the bearing facing the receiving space. The sealing assembly includes a dynamic sealing ring and a static sealing ring. The dynamic sealing ring is disposed in contact with the rotor, and the static sealing ring is disposed in contact with the stator. The space between the dynamic sealing ring and the static sealing ring is filled with viscous grease.

2. The liquid-cooled motor sealing structure according to claim 1, characterized in that: The viscous grease has a low-flow, viscous paste structure.

3. The liquid-cooled motor sealing structure according to claim 1, characterized in that: The rotor and the stator are sleeved together, and the bearings are provided at both axial ends between the rotor and the stator.

4. The liquid-cooled motor sealing structure according to any one of claims 1-3, characterized in that: A sealing ring is provided between the dynamic sealing ring and the rotor, and / or between the static sealing ring and the stator.

5. The liquid-cooled motor sealing structure according to any one of claims 1-3, characterized in that: The bearing is provided with a bearing cover plate on the side of the bearing facing away from the receiving space, and the bearing cover plate is fixed to the side of the bearing near the stator.

6. A liquid-cooled motor, characterized in that, include: The rotor assembly, stator assembly, liquid-cooled chamber, and liquid-cooled motor sealing structure according to any one of claims 1-5, wherein the rotor assembly includes the rotor, the stator assembly includes the stator, and the liquid-cooled chamber is disposed in the receiving space.

7. The liquid-cooled motor according to claim 6, characterized in that: The rotor assembly includes the rotor and a permanent magnet, the stator assembly includes the stator and motor windings, and the liquid cooling chamber is disposed between the rotor and the stator; When the liquid-cooled motor is an internal rotor motor, the rotor, the permanent magnet, the motor windings and the stator are arranged sequentially from the inside to the outside; When the liquid-cooled motor is an external rotor motor, the rotor, the permanent magnet, the motor windings and the stator are arranged sequentially from the outside to the inside.

8. The liquid-cooled motor according to claim 7, characterized in that: The rotor assembly and / or the stator assembly are provided with cooling channels, the stator is provided with a liquid inlet and a liquid outlet, and the cooling channels are connected to the liquid inlet and the liquid outlet through the liquid cooling chamber.

9. The liquid-cooled motor according to claim 8, characterized in that: The cooling channel is located on the side wall of the rotor facing the permanent magnet, and / or the cooling channel is located on the side wall of the stator facing the motor winding.

10. The liquid-cooled motor according to claim 8, characterized in that: Liquid pumps are installed at the inlet and outlet, and the liquid pumps are used to provide power for the flow of coolant.

Images