Motor pump, suspension system and vehicle

Abstract

The utility model provides a motor pump, a suspension system and a vehicle, the motor pump comprises a motor unit and a magnetic assembly, the motor unit comprises a rotating shaft, and the rotating shaft is provided with a center hole; the magnetic assembly is connected with the rotating shaft, a through hole is formed in the magnetic assembly, and the through hole communicates with the center hole to form an oil liquid flow channel. The structure of the magnetic assembly is optimized, the through hole is formed in the magnetic assembly and communicated with the center hole, the center hole and the through hole of the magnetic assembly form an oil passage, oil enters the motor, the problem of lubrication and heat dissipation in the motor is solved, and compared with an existing cooling path, the structure is simple, and motor loss is small.

Description

Technical Field

[0001] The present application relates to the field of motor technology, and in particular to a motor pump, a suspension system and a vehicle. Background Art

[0002] A large amount of heat is generated during the normal operation of the motor, which affects the performance and even the life of the motor. The heat sources of the permanent magnet motor during operation mainly include the stator winding, stator core, rotor core, magnets, bearings and other components. The existing heat dissipation method will increase the motor loss, increase the rotor vibration and increase the noise. At the same time, the coolant trapped inside the motor can easily cause high local temperature and lead to motor abnormality. Utility Model Content

[0003] A series of simplified concepts are introduced in the utility model content section, which will be further described in detail in the detailed implementation section. The utility model content section of this application does not mean to attempt to define the key features and essential technical features of the technical solution claimed for protection, nor does it mean to attempt to determine the scope of protection of the technical solution claimed for protection.

[0004] The technical problem to be solved by the present application is that a large amount of heat is generated during the normal operation of the motor, and this heat affects the motor performance inside the motor. The existing heat dissipation structure is complex, which increases the loss of the motor, increases the noise, and affects the performance of the motor.

[0005] In order to at least partially solve the above-mentioned technical problems, the first aspect of the present application provides a motor pump, characterized in that the motor pump comprises: a motor unit, the motor unit comprises a rotating shaft, the rotating shaft has a center hole; a magnetic component, the magnetic component is connected to the rotating shaft, the magnetic component is provided with a through hole, and the through hole is connected to the center hole to form an oil flow channel.

[0006] According to the motor pump of the present application, by optimizing the structure of the magnetic component, a through hole is set on the magnetic component to communicate with the center hole, so that the center hole and the through hole of the magnetic component form a passage for oil to enter the interior of the motor, solving the problem of lubrication and heat dissipation inside the motor. Compared with the existing cooling path, the structure of the present application is simple. At the same time, in the prior art, the oil is thrown out from the radial hole at the end of the rotating shaft. After the oil flows into the interior of the motor, it cannot achieve flow exchange with the outside oil. The oil flowing out from the radial direction will also increase the vibration of the motor. The present application sets a through hole on the magnetic component, so that the through hole is connected with the center hole of the rotating shaft, forming a cooling oil path for the oil to flow through the interior of the motor. The oil flows through the center hole and the through hole into the interior of the motor for lubrication and cooling. The oil is flowing, and the rotating shaft does not have radial oil holes, which can reduce oil stirring losses.

[0007] Optionally, the magnetic component is connected to one end of the rotating shaft.

[0008] Optionally, the magnetic assembly includes a magnetic ring and a magnetic ring mounting seat, the magnetic ring mounting seat is connected to the rotating shaft, the through hole is arranged on the magnetic ring mounting seat, the magnetic ring is mounted on the magnetic ring mounting seat, and the through hole and the center hole are both connected to the magnetic ring.

[0009] Optionally, a protrusion is provided at one end of the magnetic ring mounting seat, and the protrusion cooperates with the center hole to connect the magnetic ring mounting seat and the rotating shaft. The through hole is provided on the protrusion, and the through hole is connected to the center hole.

[0010] Optionally, the magnetic ring is arranged at the other end of the magnetic ring mounting base.

[0011] Optionally, the other end of the magnetic ring mounting seat is provided with a groove sunken toward one end of the magnetic ring mounting seat, and the groove is configured as a mounting groove of the magnetic ring.

[0012] Optionally, an extension dimension of the groove in the radial direction of the rotating shaft is greater than a diameter of the through hole.

[0013] Optionally, the motor pump further comprises a pump unit, the pump unit having an oil cavity, the other end of the rotating shaft extends into the pump unit, and the center hole is in communication with the oil cavity.

[0014] Optionally, the motor pump further comprises a housing, a first gap is formed between one end of the rotating shaft and the housing, a second gap is formed between the other end of the rotating shaft and the housing, and both the first gap and the second gap are connected to the central hole.

[0015] Optionally, a third gap is formed between the housing and the circumferential outer wall of the rotating shaft, the third gap is communicated with the second gap, and the third gap is suitable for communicating with the oil chamber of the pump unit.

[0016] Optionally, a bearing is arranged between one end of the rotating shaft and the housing, the motor unit includes a rotor assembly and a stator assembly, a first gap is formed between the rotor assembly and the stator assembly, the first gap is connected to the first gap, and the bearing is located on a passage connecting the first gap and the first gap.

[0017] Optionally, along the axial direction of the rotating shaft, the bearing is located between one end and the other end of the rotating shaft.

[0018] Optionally, the housing includes a motor housing and a pump housing, the motor housing and the pump housing are arranged along the axial direction of the rotating shaft, the motor housing is connected to the pump housing, the motor unit is arranged in the motor housing, and the pump unit is arranged in the pump housing.

[0019] Optionally, a first channel is provided on the motor housing, a second channel is provided on the pump housing, the first channel is communicated with the first gap, the second channel is communicated with the oil chamber, and the first channel is communicated with the second channel.

[0020] Optionally, the first gap is formed between one end of the rotating shaft and the motor housing, and the second gap is formed between the other end of the rotating shaft and the pump housing.

[0021] Optionally, the motor housing includes a first motor housing and a second motor housing that are arranged opposite to each other, and the pump housing includes a first pump housing and a second pump housing that are arranged opposite to each other;

[0022] The second motor housing is integral with the first pump housing.

[0023] A second aspect of the present application provides a suspension system, comprising the motor pump described in any one of the first aspects.

[0024] A third aspect of the present application provides a vehicle, comprising the suspension system of the second aspect. BRIEF DESCRIPTION OF THE DRAWINGS

[0025] The following drawings of the embodiments of the present application are hereby used as part of the present application for understanding the present application. The drawings show the embodiments of the present application and their descriptions, and are used to explain the principles of the present application. In the drawings,

[0026] Figure 1 It is a cutaway view of the active suspension dual motor pump;

[0027] Figure 2 This is a schematic diagram of the magnetic ring mounting base;

[0028] Figure 3 It is a schematic diagram of magnetic ring;

[0029] Figure 4 This is an enlarged view of the first gap position.

[0030] The reference numerals in the specification are as follows:

[0031] 100. Motor pump; 1. Motor unit; 10. Rotating shaft; 11. Center hole; 12. Rotor assembly; 13. Stator assembly; 14. First gap; 2. Magnetic assembly; 20. Through hole; 21. Magnetic ring; 22. Magnetic ring mounting seat; 23. Protrusion; 24. Groove; 25. Magnetic ring hole; 3. Pump unit; 30. Gear; 31. Oil chamber; 4. Housing; 40. First gap; 41. Second gap; 42. Third gap; 43. Pump cover bearing; 44. Ball bearing; 45. Motor housing; 46. Pump housing; 5. Seal; 6. First channel 7. Second channel; 8. One-way valve. DETAILED DESCRIPTION

[0032] In the following description, a large number of specific details are provided to provide a more thorough understanding of the present application. However, it is obvious to those skilled in the art that the present application embodiments can be implemented without one or more of these details. In other examples, in order to avoid confusion with the present application embodiments, some technical features well known in the art are not described.

[0033] Herein, ordinal numbers such as “first” and “second” cited in the present application are merely identifications and do not have any other meanings, such as a specific order, etc. Moreover, for example, the term “first component” itself does not imply the existence of the “second component”, and the term “second component” itself does not imply the existence of the “first component”.

[0034] In this document, “upper”, “lower”, “front”, “back”, “left”, “right”, etc. are only used to indicate the relative position relationship between related parts, rather than to limit the absolute positions of these related parts.

[0035] In this document, “equal”, “same”, etc. are not strictly limited in a mathematical and / or geometric sense, but also include errors that can be understood by those skilled in the art and are allowed in manufacturing or use.

[0036] Unless otherwise stated, the numerical ranges herein include not only the entire range within its two endpoints but also include several sub-ranges contained therein.

[0037] The present application embodiment provides a motor pump 100, the motor pump 100 is as follows Figure 1 As shown, the motor pump 100 includes a motor unit 1, the motor unit 1 includes a rotating shaft 10, and the rotating shaft 10 has a center hole 11; the motor pump 100 also includes a magnetic component 2, the magnetic component 2 is connected to the rotating shaft 10, and a through hole 20 is provided on the magnetic component 2, and the through hole 20 is connected to the center hole 11 to form an oil flow channel.

[0038] According to the motor pump 100 of the present application, by optimizing the structure of the magnetic component 2, a through hole 20 is set on the magnetic component 2 to communicate with the center hole 11, so that the center hole 11 and the through hole 20 of the magnetic ring component form a passage for oil to enter the motor, solving the problem of lubrication and heat dissipation inside the motor. Compared with the existing cooling path, the structure of the present application is simple. At the same time, in the prior art, the oil is thrown out from the radial hole at the end of the rotating shaft 10. After the oil flows into the motor, it cannot achieve flow exchange with the outside oil. The oil flowing out from the radial direction will also increase the vibration of the motor. The present application sets a through hole 20 on the magnetic component 2, so that the through hole 20 is connected with the center hole 11 of the rotating shaft 10, forming a cooling oil path for the oil to flow through the motor. The oil flows through the center hole 11 and the through hole 20 to enter the motor for lubrication and cooling. The oil is flowing, and the rotating shaft 10 does not have a radial oil hole, which can reduce the oil stirring loss.

[0039] In one embodiment, reference Figure 1 , the magnetic component 2 is connected to one end of the rotating shaft 10, and the one end of the rotating shaft 10 is relative to the other end of the rotating shaft 10. Here, the one end of the rotating shaft 10 refers to the end extending to the motor unit 1, and the other end of the rotating shaft 10 is the end extending to the pump unit 3 (consistent with the "pump unit 3" described below). Specifically, the magnetic component 2 is connected to the end of one end of the rotating shaft 10 by threaded connection or other matching relationship, and forms a detachable integral part with the rotating shaft 10.

[0040] In one embodiment, if Figure 1-Figure 3 As shown, the magnetic assembly 2 includes a magnetic ring 21 and a magnetic ring mounting seat 22, wherein the magnetic ring mounting seat 22 is connected to the rotating shaft 10, the through hole 20 is arranged on the magnetic ring mounting seat 22, the magnetic ring 21 is mounted on the magnetic ring mounting seat 22, one end of the through hole 20 on the magnetic ring mounting seat 22 is connected to the center hole 11 of the rotating shaft 10, and the other end is connected to the magnetic ring 21, as shown in FIG. Figure 3 As shown, the magnetic ring 21 itself is a ring-shaped object with a hole, and the magnetic ring hole 25 of the magnetic ring 21 is connected to the other end of the through hole 20, so that the through hole 20 and the center hole 11 are both connected to the magnetic ring 21.

[0041] In one embodiment, if Figure 2 As shown, a protrusion 23 structure is provided at one end of the magnetic ring mounting seat 22, and the protrusion 23 is suitable for extending into the center hole 11, and cooperates with the center hole 11 to connect the magnetic ring mounting seat 22 and the rotating shaft 10. There is no special restriction on the shape of the protrusion 23, and it can be circular or polygonal or other special shapes. The protrusion 23 and the center hole 11 of the rotating shaft 10 can be interfered with or threaded. A through hole 20 is provided on the protrusion 23, and the through hole 20 is connected to the center hole 11.

[0042] In one embodiment, the magnetic ring 21 is disposed at the other end of the magnetic ring mounting seat 22 .

[0043] In one embodiment, if Figure 2 As shown, the other end of the magnetic ring mounting seat 22 is provided with a groove 24 that is recessed toward one end of the magnetic ring mounting seat 22. The groove 24 is configured as a mounting groove for the magnetic ring 21. The magnetic ring 21 is mounted in the groove 24 of the magnetic ring mounting seat 22. A protruding structure may be provided in the groove 24, which is conducive to more firmly mounting the magnetic ring 21 on the magnetic ring mounting seat 22. The magnetic ring 21 is connected to the through hole 20 and the center hole 11 on the magnetic ring mounting seat 22, and oil can pass through the magnetic ring mounting seat 22 and the magnetic ring 21.

[0044] In one embodiment, the extension dimension of the groove 24 in the radial direction of the rotating shaft 10 is larger than the diameter of the through hole 20 to ensure that the oil does not leak.

[0045] In one embodiment, if Figure 1 As shown, the motor pump 100 also includes a pump unit 3, and the pump unit 3 and the motor unit 1 are arranged along the axial direction of the rotating shaft 10. The motor unit 1 is connected to the pump unit 3, and the motor unit 1 can drive the pump unit 3. The pump unit 3 and the motor unit 1 can be connected through a polygon or a spline to transmit torque. Here, the pump unit 3 can be an internal gear pump. The pump unit 3 has an oil cavity 31, and the other end of the rotating shaft 10 extends to the pump unit 3. The center hole 11 of the rotating shaft 10 can be connected with the oil cavity 31 of the pump unit 3, so that the oil in the oil cavity 31 can flow into the center hole 11 of the rotating shaft 10. Specifically, when the motor pump 100 is working, the motor drives the gear 30 of the internal gear pump to rotate, so that the oil cavity 31 in the pump unit 3 can be opened to communicate with the flow channel outside, so that the oil flows into the center hole 11.

[0046] In one embodiment, if Figure 1 As shown, the motor pump 100 also includes a housing 4, a first gap 40 is formed between one end of the rotating shaft 10 and the housing 4, and a second gap 41 is formed between the other end of the rotating shaft 10 and the housing 4. The first gap 40 and the second gap 41 are connected to the center hole 11 of the rotating shaft 10, forming an oil flow path of the second gap 41→center hole 11→first gap 40.

[0047] In one embodiment, a third gap 42 is formed between the housing 4 and the circumferential outer wall of the rotating shaft 10 . The third gap 42 is connected to the second gap 41 . The third gap 42 is suitable for being connected to the oil chamber 31 of the pump unit 3 .

[0048] Specifically, the third gap 42 is the gap between the pump cover bearing 43 and the rotating shaft 10. The pump unit 3 is arranged in the pump housing 46. The pump body bearing and the pump cover bearing 43 are arranged on the pump housing 46. There are gaps between the pump body bearing and the pump cover bearing 43 and the rotating shaft 10. The gap between the pump cover bearing 43 and the rotating shaft 10 is the third gap 42 described in this article. The third gap 42 can be communicated with the oil chamber 31. When the motor drives the gear 30 of the internal gear pump to rotate, the oil chamber 31 of the pump unit 3 opens, and the oil flows into the third gap 42. The third gap 42 is connected to the second gap 41, and the second gap 41 is connected to the center hole 11. Therefore, when the motor pump 100 is working, the oil chamber 31 opens, and the oil flows from the oil chamber 31 into the third gap 42, then into the second gap 41, and then into the center hole 11 of the rotating shaft 10, forming a path of oil chamber 31→third gap 42→second gap 41→center hole 11.

[0049] In one embodiment, if Figure 1 and Figure 4 As shown, the motor unit 1 includes a rotor assembly 12 and a stator assembly 13, and a first gap 14 is formed between the rotor assembly 12 and the stator assembly 13, and the first gap 14 is connected to the first gap 40. A bearing is arranged between one end of the rotating shaft 10 and the housing 4, and the bearing is located on the passage connecting the first gap 14 and the first gap 40. The bearing is a ball bearing 44, and the oil can pass through the gap of the ball bearing 44. That is to say, after the oil flows out of the oil cavity 31 of the pump unit 3, it passes through the third gap 42, the second gap 41, the center hole 11, the magnetic ring mounting seat 22 and the magnetic ring 21, the first gap 40, and then flows through the ball bearing 44 to enter the first gap 14 between the rotor assembly 12 and the stator assembly 13. In this process of oil flow, on the one hand, the ball bearing 44 can be lubricated and cooled, and on the other hand, the heat of the stator assembly 13 and the rotor assembly 12 can be taken away.

[0050] In one embodiment, along the axial direction of the rotating shaft 10 , the bearing is located between one end and the other end of the rotating shaft 10 .

[0051] In one embodiment, the housing 4 includes a motor housing 45 and a pump housing 46. The motor housing 45 and the pump housing 46 are arranged along the axial direction of the rotating shaft 10. The motor housing 45 is connected to the pump housing 46. The motor unit 1 is arranged in the motor housing 45, and the pump unit 3 is arranged in the pump housing 46. The housing 4 is divided into the motor housing 45 and the pump housing 46, which is convenient for disassembly and replacement.

[0052] In another embodiment, the housing 4 of the motor pump 100 is an integrated piece, the motor unit 1 is disposed in the housing 4 , and the pump unit 3 is also disposed in the housing 4 .

[0053] In one embodiment, if Figure 1As shown, the first gap 40 is formed between one end of the rotating shaft 10 and the motor housing 45, and the second gap 41 is formed between the other end of the rotating shaft 10 and the pump housing 46. The magnetic ring 21 and the magnetic ring mounting seat 22 are mounted at the end of one end of the rotating shaft 10, and the motor housing 45 is also provided with a seal 5, which is sealed at one end of the rotating shaft 10 to prevent leakage of oil. Therefore, specifically, the first gap 40 is actually the space formed between the magnetic ring 21, the magnetic ring mounting seat 22 and the seal 5 on the motor housing 45, and the first gap 40 can be connected with the ball bearing 44 and the first gap 14. Therefore, when the motor pump 100 is working, the oil flows from the oil cavity 31 into the third gap 42, passes through the second gap 41, the center hole 11, the through hole 20 on the magnetic ring mounting seat 22, and the magnetic ring 21 into the first gap 40, and then flows into the bearing chamber through the ball bearing 44 to reach the first gap 14.

[0054] In one embodiment, if Figure 1 As shown, the motor housing 45 is provided with a first channel 6, and the pump housing 46 is provided with a second channel 7, 6 is connected to the first gap 14, the second channel 7 is connected to the oil chamber 31, and the first channel 6 is connected to the second channel 7. A one-way valve 8 is also provided between the second channel 7 and the oil chamber 31. When the pressure in the second channel 7 is relatively high, the one-way valve 8 opens, and the oil flows back from the second channel 7 to the oil chamber 31 of the pump unit 3. Finally, when the motor pump 100 is working, the oil chamber 31 opens, the oil flows out of the oil chamber 31, enters the third gap 42, passes through the second gap 41, enters the center hole 11 and the through hole 20 and the magnetic ring hole 25 on the magnetic ring mounting seat 22 at the end of the center hole 11, reaches the first gap 40, then flows into the bearing chamber, passes through the bearing, reaches the first gap 14, then flows into the first channel 6 and the second channel 7, and finally returns to the oil chamber 31.

[0055] In one embodiment, the motor housing 45 can be regarded as a first motor housing and a second motor housing disposed oppositely, and the pump housing 46 can also be regarded as a first pump housing and a second pump housing disposed oppositely, and the second motor housing and the first pump housing are integrated.

[0056] In another embodiment, the second motor housing and the first pump housing can also be two parts, that is, the motor unit 1 is accommodated in the cavity formed by the first motor housing and the second motor housing, and the pump unit 3 is accommodated in the cavity formed by the first pump housing and the second pump housing, and then the two parts are connected.

[0057] The present application also provides a suspension system, and the suspension system of the present application has the motor pump 100 described in any of the above embodiments.

[0058] The present application also provides a vehicle, and the vehicle of the present application includes the suspension system described above.

[0059] The present application optimizes the structure of the magnetic component 2, sets a through hole 20 on the magnetic component 2 to communicate with the center hole 11, so that the center hole 11 and the through hole 20 of the magnetic component 2 form a passage for oil to enter the motor, thereby solving the problem of lubrication and heat dissipation inside the motor. Compared with the existing cooling path, the structure of the present application is simple. At the same time, in the prior art, the oil is thrown out from the radial hole at the end of the rotating shaft 10. After the oil flows into the motor, it cannot achieve flow exchange with the oil outside. The oil flowing out from the radial direction will also increase the vibration of the motor. The present application sets a through hole 20 on the magnetic component 2, so that the through hole 20 communicates with the center hole 11 of the rotating shaft 10, forming a cooling oil path for the oil to flow through the motor. The oil flows through the center hole 11 and the through hole 20 to enter the motor for lubrication and cooling. The oil is flowing, and the rotating shaft 10 does not have a radial oil hole, which can reduce oil stirring loss and reduce motor mechanical wear. At the same time, the fluid dynamics performance is optimized and the NVH of the motor is improved.

[0060] Unless otherwise defined, the technical and scientific terms used herein have the same meaning as those generally understood by those skilled in the art in the technical field of this application. The terms used herein are only for describing specific implementation purposes and are not intended to limit this application. Terms such as "setting" appearing in this article can mean that one component is directly attached to another component, or that one component is attached to another component through an intermediate. Features described in this article in one embodiment may be applied to another embodiment alone or in combination with other features, unless the feature is not applicable in the other embodiment or otherwise specified.

[0061] The present application has been described through the above-mentioned embodiments, but it should be understood that the above-mentioned embodiments are only for the purpose of example and description, and are not intended to limit the present application to the described embodiments. It can be understood by those skilled in the art that more variations and modifications can be made according to the teachings of the present application, and these variations and modifications all fall within the scope of protection claimed in the present application.

Claims

1. A motor pump, characterized in that: The motor pump comprises: A motor unit, the motor unit comprising a rotating shaft, the rotating shaft having a central hole; A magnetic component is connected to the rotating shaft, and the magnetic component is provided with a through hole, and the through hole is connected to the central hole to form an oil flow channel.

2. The motor pump according to claim 1, characterized in that: The magnetic component is connected to one end of the rotating shaft.

3. The motor pump according to claim 2, characterized in that: The magnetic assembly includes a magnetic ring and a magnetic ring mounting seat, the magnetic ring mounting seat is connected to the rotating shaft, the through hole is arranged on the magnetic ring mounting seat, the magnetic ring is mounted on the magnetic ring mounting seat, and the through hole and the center hole are both connected to the magnetic ring.

4. The motor pump according to claim 3, characterized in that: A protrusion is provided at one end of the magnetic ring mounting seat, and the protrusion cooperates with the center hole to connect the magnetic ring mounting seat and the rotating shaft. The through hole is provided on the protrusion, and the through hole is connected to the center hole.

5. The motor pump according to claim 4, characterized in that: The magnetic ring is arranged at the other end of the magnetic ring swivel seat.

6. The motor pump according to claim 5, characterized in that: The other end of the magnetic ring mounting seat is provided with a groove recessed toward one end of the magnetic ring mounting seat, and the groove is configured as a mounting groove of the magnetic ring.

7. The motor pump according to claim 6, characterized in that: An extension dimension of the groove in the radial direction of the rotating shaft is greater than a diameter of the through hole.

8. The motor pump according to any one of claims 1 to 7, characterized in that: The motor pump further comprises a pump unit, wherein the pump unit has an oil cavity, the other end of the rotating shaft extends into the pump unit, and the center hole is communicated with the oil cavity.

9. The motor pump according to claim 8, characterized in that: The motor pump further comprises a housing, a first gap is formed between one end of the rotating shaft and the housing, a second gap is formed between the other end of the rotating shaft and the housing, and both the first gap and the second gap are communicated with the central hole.

10. The motor pump according to claim 9, characterized in that A third gap is formed between the housing and the circumferential outer wall of the rotating shaft. The third gap is communicated with the second gap. The third gap is suitable for communicating with the oil chamber of the pump unit.

11. The motor pump according to claim 9, characterized in that: A bearing is arranged between one end of the rotating shaft and the housing, the motor unit includes a rotor assembly and a stator assembly, a first gap is formed between the rotor assembly and the stator assembly, the first gap is connected to the first gap, and the bearing is located on the passage connecting the first gap and the first gap.

12. The motor pump according to claim 11, characterized in that Along the axial direction of the rotating shaft, the bearing is located between one end and the other end of the rotating shaft.

13. The motor pump according to claim 11, characterized in that: The housing comprises a motor housing and a pump housing, wherein the motor housing and the pump housing are arranged along the axial direction of the rotating shaft, the motor housing is connected to the pump housing, the motor unit is arranged in the motor housing, and the pump unit is arranged in the pump housing.

14. The motor pump according to claim 13, characterized in that The motor housing is provided with a first channel, and the pump housing is provided with a second channel. The first channel is communicated with the first gap, the second channel is communicated with the oil chamber, and the first channel is communicated with the second channel.

15. The motor pump according to claim 13, characterized in that: The first gap is formed between one end of the rotating shaft and the motor housing, and the second gap is formed between the other end of the rotating shaft and the pump housing.

16. The motor pump according to claim 13, characterized in that: The motor housing comprises a first motor housing and a second motor housing which are arranged opposite to each other, and the pump housing comprises a first pump housing and a second pump housing which are arranged opposite to each other; The second motor housing is integral with the first pump housing.

17. A suspension system, characterized in that: Comprising the motor pump according to any one of claims 1-16.

18. A vehicle, characterized in that: Comprising the suspension system of claim 17.

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