Motor casing, motor assembly, motor pump assembly, active suspension and vehicle

Abstract

The utility model provides a motor casing, a motor assembly, a motor pump assembly, an active suspension and a vehicle. The motor shell comprises a containing cavity and a cooling circulation channel. The containing cavity is suitable for containing the rotor and the stator and extends in the length direction of the motor shell. The cooling circulation channel is suitable for circulating a cooling medium. The cooling circulation channel is separated from the containing cavity. The cooling circulation channel comprises a plurality of sub-channels extending in the length direction. And the plurality of sub-channels are arranged at intervals along the width direction of the motor shell. The sub-channels are connected end to end. Compared with the prior art that a cooling channel is arranged at the axial end part of the motor shell, the motor shell has the advantages that the space of the cooling circulation channel arranged on the peripheral side of the shell is larger, the coverage area of the cooling circulation channel on the periphery of the accommodating cavity is increased, and the heat dissipation area and the heat dissipation efficiency are increased.

Description

Technical Field

[0001] The utility model generally relates to the technical field of motors, and more specifically to a motor housing, a motor component, a motor pump assembly, an active suspension and a vehicle. Background Art

[0002] The related technology provides a servo motor oil pump connection flange cooling structure. The servo motor oil pump connection flange cooling structure includes an internal gear pump and a servo motor. The internal gear pump is fixed to the oil pump mounting flange of the servo motor. The oil pump shaft of the internal gear pump is connected to the rotor of the servo motor. A cooling water circulation channel is provided in the oil pump mounting flange. The cooling structure adds a cooling water circulation channel to the oil pump mounting flange. However, the cooling water circulation channel is only arranged at the connection position between the oil pump and the motor, and the heat dissipation effect is limited, making it difficult to effectively cool the main body of the motor. Moreover, due to the limited assembly space of the vehicle, the size of the motor in the horizontal direction perpendicular to its own axis cannot be too large. Therefore, how to improve the heat dissipation effect while ensuring the external size of the motor has become a difficult problem to be solved by technicians in this field. 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 the utility model 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] In order to at least partially solve the above problems, the utility model provides a motor housing in a first aspect, the motor housing comprising a housing cavity and a cooling circulation channel, the housing cavity is suitable for accommodating a rotor and a stator and extending along the length direction of the motor housing, the cooling circulation channel is suitable for circulating a cooling medium, and the cooling circulation channel is separated from the housing cavity.

[0005] The cooling circulation channel includes a plurality of sub-channels extending along the length direction, the plurality of sub-channels are arranged at intervals along the width direction of the motor housing, and the plurality of sub-channels are connected end to end.

[0006] According to the motor housing of the first aspect of the utility model, a cooling circulation channel is provided in the motor housing, and the cooling circulation channel includes a plurality of sub-channels extending in the length direction and spaced in the width direction, and each sub-channel is connected end to end. Compared with the related art in which the cooling channel is provided at the axial end of the motor housing, the cooling circulation channel of the utility model has a larger arrangement space on the peripheral side of the motor housing, which helps to increase the coverage area of ​​the cooling circulation channel on the outer periphery of the accommodating cavity, thereby increasing the heat dissipation area and improving the heat dissipation efficiency.

[0007] Optionally, the motor housing includes two cooling circulation channels, and the two cooling circulation channels are respectively located on both sides of the accommodating cavity along the height direction of the motor housing.

[0008] Optionally, the motor housing has a first end and a second end along the length direction, each of the cooling circulation channels has a first port opened at the first end, and the two first ports are respectively suitable for connecting to a pump;

[0009] The motor housing further includes a communication channel, which is disposed adjacent to the second end, and through which the two cooling circulation channels are communicated.

[0010] Optionally, the two first ports are spaced apart from each other, and the communication channel is opened at the second end.

[0011] Optionally, the ends of the two cooling circulation channels corresponding to the second ends are located on the same side of the accommodating cavity in the width direction; and / or

[0012] Ends of the two cooling circulation channels corresponding to the first ends are located on the same side of the accommodating cavity in the width direction.

[0013] Optionally, both ends of the cooling circulation channel are located at the same end of the motor housing along the length direction, the two cooling circulation channels are spaced apart from each other, and both ends of the two cooling circulation channels are respectively suitable for connecting to a pump.

[0014] Optionally, in a cross section of the motor housing perpendicular to the length direction, each portion of the cooling circulation channel along the width direction is at the same distance from the accommodating cavity in the height direction; and / or

[0015] The cross-sectional areas of the cooling circulation channel at various portions along its extending direction are the same.

[0016] A second aspect of the utility model provides a motor assembly, which includes the motor housing according to the above.

[0017] According to the motor assembly of the second aspect of the utility model, by applying the above-mentioned motor shell, the coverage area of ​​the cooling circulation channel on the periphery of the accommodating cavity can be increased, thereby increasing the heat dissipation area and improving the heat dissipation efficiency.

[0018] Optionally, the motor assembly includes a heat conductor connected to the side of the motor housing along the width direction, the heat conductor extends along the height direction of the motor housing toward the cooling circulation channel, and the heat conductor is suitable for conducting heat to the cooling circulation channel.

[0019] A third aspect of the utility model provides a motor pump assembly, which includes the above-mentioned motor component.

[0020] According to the motor pump assembly of the third aspect of the utility model, by applying the above-mentioned motor assembly, the heat dissipation effect can be improved, so that the motor pump can adapt to work at a higher power for a longer time to meet the use requirements of specific or extreme working conditions. Optionally, the motor pump assembly includes an internal gear pump, and the internal gear pump is connected to the motor assembly.

[0021] A fourth aspect of the utility model provides an active suspension, which includes the above-mentioned motor pump assembly.

[0022] According to the active suspension of the fourth aspect of the utility model, by applying the above-mentioned motor pump assembly, the active suspension can adapt to the use requirements in longer time and higher power use scenarios.

[0023] A fifth aspect of the utility model provides a vehicle, which includes the above-mentioned active suspension, or the above-mentioned motor pump assembly, or the above-mentioned motor component.

[0024] According to the vehicle of the fifth aspect of the utility model, by applying the above-mentioned active suspension, or the above-mentioned motor pump assembly, or the above-mentioned motor assembly, by reasonably selecting the position of the cooling circulation channel in the casing to avoid the space on both sides of the width direction of the casing, it is beneficial to reduce the space occupied by the motor assembly in the vehicle, so that the motor assembly can be applied to more vehicles. Further, the vehicle of the utility model has better performance in active suspension, which helps to improve the user experience. BRIEF DESCRIPTION OF THE DRAWINGS

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

[0026] Figure 1 It is a front view of a motor pump assembly according to a preferred embodiment of the utility model;

[0027] Figure 2 For along Figure 1 A cross-sectional view taken along line BB in FIG.

[0028] Figure 3 For along Figure 1 A cross-sectional view taken along line AA in FIG.

[0029] Figure 4 For along Figure 1 A cross-sectional view taken along line CC in FIG.

[0030] Figure 5 A cross-sectional view of a motor component of a motor pump assembly according to another preferred embodiment of the present invention, the viewing angle of which corresponds to Figure 2 perspective; and

[0031] Figure 6 for Figure 5 Another cross-sectional view of the motor assembly of the motor pump assembly shown, the perspective of this figure corresponds to Figure 3 perspective.

[0032] Description of reference numerals:

[0033] 100: Motor pump assembly 110: Motor assembly

[0034] 111: Motor housing 111a: Accommodation chamber

[0035] 111b: cooling circulation channel 111c: communication channel

[0036] 111d: Entrance 111e: Exit

[0037] 111f: first end 111g: second end

[0038] 111h: Shell body 111i: Flow channel

[0039] 111m: Weight reduction slot 111n: Sub-channel

[0040] 112: Motor shaft

[0041] 113: Heat conducting part 120: Internal gear pump

[0042] 211: housing 211a: receiving chamber

[0043] 211b: Cooling circulation channel 211d: Inlet

[0044] 211e: outlet 211h: shell body

[0045] 211i: flow channel 211j: flow channel cover

[0046] 211k: Heat conductor D1: Length direction

[0047] D2: Width direction D3: Height direction DETAILED DESCRIPTION

[0048] In the following description, a large number of specific details are given to provide a more thorough understanding of the present invention. However, it is obvious to those skilled in the art that the present invention can be implemented without one or more of these details. In other examples, in order to avoid confusion with the present invention, some technical features known in the art are not described.

[0049] In order to fully understand the implementation of the present invention, a detailed structure will be presented in the following description. Obviously, the implementation of the implementation of the present invention is not limited to the specific details familiar to those skilled in the art.

[0050] It should be understood that the purpose of the terms used herein is only to describe specific embodiments and is not intended to limit the present invention, and the singular forms "a", "an" and "said / the" are also intended to include plural forms, unless the context clearly indicates otherwise. When the terms "comprise" and / or "include" are used in this specification, it indicates the presence of the features, integral bodies, steps, operations, elements and / or components, but does not exclude the presence or addition of one or more other features, integral bodies, steps, operations, elements, components and / or combinations thereof.

[0051] Ordinal numbers such as "first" and "second" cited in the present invention are merely identifiers and do not have any other meaning, such as a specific order. Moreover, for example, the term "first component" itself does not imply the existence of a "second component", and the term "second component" itself does not imply the existence of a "first component". It should be noted that the terms "upper", "lower", "front", "back", "left", "right", "inner", "outer" and similar expressions used in the present invention are for illustrative purposes only and are not limiting.

[0052] The "parallel" / "perpendicular" and similar expressions used in the present invention include an absolute parallel / perpendicular relationship and a roughly parallel / perpendicular relationship (for example, a relationship that differs from absolute parallel / perpendicular by -5° to +5°), which can have the same effect.

[0053] Hereinafter, specific embodiments of the present invention will be described in more detail with reference to the accompanying drawings. These drawings show representative embodiments of the present invention and are not intended to limit the present invention.

[0054] The utility model provides a motor assembly, a motor pump assembly, an active suspension and a vehicle. The motor pump assembly may include a motor assembly and an internal gear pump. The rotor or shaft of the motor assembly is directly or indirectly connected to the shaft of the internal gear pump. The active suspension may include the motor pump assembly. The vehicle may include the active suspension. The vehicle here may be a fuel vehicle, a hybrid vehicle or a pure electric vehicle.

[0055] The following will refer to Figures 1 to 6 The illustrated examples illustrate in detail the motor housing, the motor assembly, the motor pump assembly, the active suspension and the vehicle according to the present invention.

[0056] First embodiment

[0057] like Figure 1 and Figure 4 As shown, the motor housing 111 according to the first embodiment of the utility model may include a housing chamber 111a and a cooling circulation channel 111b. The housing chamber 111a extends along the length direction D1. The cross section of the housing chamber 111a may be circular to accommodate the movement. The movement may include components such as a motor shaft 112, a rotor (not shown) and a stator (not shown). The housing chamber 111a and the cooling circulation channel 111b are spaced apart from each other. The cooling circulation channel 111b may include a plurality of sub-channels 111n extending along the length direction D1. The plurality of sub-channels 111n are spaced apart along the width direction D2 of the motor housing 111. The plurality of sub-channels 111n are connected end to end and are arranged in a curved and circuitous shape. The end of the cooling circulation channel 111b extends along the length direction D1. The end of the cooling circulation channel 111b is arranged corresponding to the end of the motor housing 111 along the length direction D1. The end of the cooling circulation channel 111b is suitable for communicating with an external cooling circulation device. The cooling circulation passage 111b is suitable for circulating the cooling medium so that the cooling medium flows between the cooling circulation passage 111b and an external cooling circulation device. The external cooling circulation device here may be, for example, a vehicle air conditioning system.

[0058] According to the motor assembly 110 of the utility model, a cooling circulation channel 111b is provided in the motor housing 111, and the cooling circulation channel 111b is bent and extended along the circumferential direction and the length direction D1 of the accommodating cavity 111a. Compared with the related art in which a cooling channel is provided at the end of the length direction D1 of the motor housing 111, the cooling circulation channel 111b of the utility model has a larger circumferential arrangement space of the motor housing 111, which helps to increase the coverage area of ​​the cooling circulation channel 111b on the periphery of the accommodating cavity 111a, thereby increasing the heat dissipation area and improving the heat dissipation efficiency.

[0059] See also Figure 2 and Figure 3, further, the motor housing 111 may include two cooling circulation channels 111b. The two cooling circulation channels 111b are respectively located on both sides of the accommodating chamber 111a along the height direction D3 of the motor housing 111. By providing two cooling circulation channels 111b and arranging them on both sides of the accommodating chamber 111a, the structure can be simplified on the basis of increasing the heat dissipation area. Since the two cooling circulation channels 111b are arranged on both sides of the accommodating chamber 111a along the height direction D3, it is helpful to reduce the space occupied by the cooling circulation channels 111b on the side of the motor housing 111 along the width direction D2, which is conducive to reducing the size of the motor housing 111 along the width direction D2, and then making the motor assembly 110 suitable for installation in a vehicle with a large space restriction in the front and rear directions of the vehicle. The width direction D2 here is a horizontal direction perpendicular to the length direction D1 and the height direction D3. When the motor assembly 110 is applied to the vehicle, the width direction D2 is parallel to or nearly parallel to the front and rear directions of the vehicle. In other words, since the two cooling circulation channels 111b are arranged on both sides of the motor housing 111 along the height direction D3, the size of the motor assembly 110 along the width direction D2 is the same as or slightly different from the size of the motor assembly 110 along the width direction D2 without the cooling circulation channels 111b, which helps the motor assembly 110 meet the requirements of being used in vehicles with limited installation space.

[0060] See also Figures 1 to 4 For example, the motor housing 111 has a first end 111f and a second end 111g along the length direction D1. Each cooling circulation channel 111b has a first port opened at the first end 111f and a second port corresponding to the second end 111g. The two first ports are respectively suitable for connecting a pump. The motor housing 111 also includes a connecting channel 111c. The connecting channel 111c is arranged adjacent to the second end 111g. The second ports of the two cooling circulation channels 111b are connected through the connecting channel 111c. The two cooling circulation channels 111b here are connected in series as one circulation channel, and one of the two first ports can be used as an inlet 111d and the other first port can be used as an outlet 111e, which helps to reduce the number of opening structures on the motor housing 111, thereby simplifying the structure of the motor housing 111 and reducing the sealing cost.

[0061] See also Figures 2 to 4 , further, the two first ports are spaced apart from each other to avoid the motor shaft. Here, it can be understood that the inlet 111d and the outlet 111e of the cooling circulation channel 111b are arranged at the end of the motor housing 111 suitable for connecting the pump, which is convenient for centralized arrangement of pipelines, thereby helping to reduce the space occupied in the length direction D1 of the motor housing 111, thereby improving the compactness of the structure and reducing the length direction D1 size of the motor housing 111.

[0062] exist Figures 2 to 4 In the example shown, the two cooling circulation channels 111b are arranged opposite to each other in the width direction D2. That is, the two cooling circulation channels 111b are oriented in opposite directions in the circumferential direction of the motor housing 111. The ends of the two cooling circulation channels 111b corresponding to the second ends 111g are located on the same side of the accommodating cavity 111a in the width direction D2 perpendicular to the length direction D1. The ends of the two cooling circulation channels 111b corresponding to the first ends 111f are located on the same side of the accommodating cavity 111a in the width direction D2 perpendicular to the length direction D1. The motor housing 111 may further include a connecting channel 111c. The connecting channel 111c extends along the height direction D3 and is connected to the ends of the two cooling circulation channels 111b.

[0063] See also Figure 2 and Figure 3 For another example, the motor housing 111 may include a housing body 111h and a flow channel cover (not shown). The housing body 111h is provided with a flow channel groove 111i. The flow channel cover is adapted to cover the flow channel groove 111i to form a cooling circulation channel 111b.

[0064] According to the motor housing of the utility model, the two cooling circulation channels 111b located in the accommodating cavity 111a along the height direction D3 are connected through the connecting channel 111c, so that the two cooling circulation channels 111b share a pair of outlets 111e and inlet 111d, thereby reducing the space occupied by the outside of the motor housing 111 due to the arrangement of pipelines. The inlet 111d and the outlet 111e of the cooling circulation channel 111b of the motor housing 111 are connected to the external cooling circulation device. The cooling medium enters the cooling circulation channel 111b from the inlet 111d. Based on the heat exchange principle, the heat generated by the motor operation is taken away by the circulating cooling medium and enters the external cooling circulation device from the outlet 111e. When the cooling circulation channel 111b and the external cooling circulation device are working, the working temperature of the motor housing 111 can be effectively reduced, the loss can be reduced, and the overheating protection function of the motor housing 111 can be avoided. The motor housing 111 can work more stably at a higher power for a longer time, and the electric high-pressure pump assembly applicable to the motor housing 111 can meet the use requirements of long-term high-power working conditions.

[0065] In other examples not shown, the ends of the two cooling circulation channels corresponding to the second ends are located on both sides of the accommodating cavity in the width direction perpendicular to the axial direction. The ends of the two cooling circulation channels corresponding to the first ends are located on both sides of the accommodating cavity in the width direction perpendicular to the axial direction. The connecting channel connecting the ends of the two cooling circulation channels extends in a direction inclined to the height direction.

[0066] In other examples not shown, the directions of the two cooling circulation channels in the circumferential direction of the motor housing remain consistent.

[0067] For example, the structures of the two cooling circulation channels 111b can be the same, which can ensure the consistency of the cooling effect of the two cooling circulation channels 111b during operation, thereby improving the balance of the heat dissipation of the motor housing 111 by the two cooling circulation channels 111b.

[0068] For example, in the cross section of the motor housing 111 perpendicular to the length direction D1, the distances of the portions of the cooling circulation channel 111b along the width direction D2 and the accommodating cavity 111a in the radial direction are the same or nearly the same. The cross-sectional areas of the portions of the cooling circulation channel 111b along its own extension direction are the same or nearly the same. This can ensure, on the one hand, that the portions of the cooling circulation channel 111b can more fully exchange heat with the accommodating cavity 111a, and on the other hand, can maintain the consistency of the heat exchange effects of the portions of the cooling circulation channel 111b. The average distances of the cooling circulation channels 111b from the inner surface of the motor housing 111 facing the accommodating cavity 111a are approximately equal, so as to achieve approximately the same heat dissipation effect at different positions of the motor assembly 110 in the circumferential direction.

[0069] In some examples not shown, the number of cooling circulation channels may not be limited to two. For example, the number of cooling circulation channels may be one, three, or more than three.

[0070] Second embodiment

[0071] See also Figure 5 and Figure 6 According to the motor assembly of the second embodiment of the utility model, the same contents as those of the first embodiment will not be repeated here, and the emphasis here is on explaining the parts different from the first embodiment. In the motor assembly provided in the second embodiment, both ends of the cooling circulation channel 211b are located at the same end of the motor housing 211 along the length direction D1. The two cooling circulation channels 211b are spaced apart from each other. In other words, the two cooling circulation channels 211b are arranged in parallel in the motor housing 211, and the two cooling circulation channels 211b are each separately connected to an external cooling circulation device.

[0072] Continue reading Figure 5 and Figure 6 , further, the motor housing 211 has a first end and a second end along the length direction D1. The first end of the motor housing 211 is suitable for connecting a pump. Both ends of the cooling circulation channel 211b are located at the first end of the motor housing 211. A portion of the cooling circulation channel 211b is located at the second end of the motor housing 211. That is, the inlet 211d and the outlet 211e of the cooling circulation channel 211b are both arranged at the end of the motor housing 211 suitable for connecting a pump. This facilitates the centralized layout of the pipelines and is also beneficial for reducing the occupation of the pipelines by the external space of the motor housing 211 along the length direction D1.

[0073] See also Figure 5 and Figure 6 For example, the motor housing 211 may include a housing body 211h and a flow channel cover 211j. The housing body 211h is provided with a flow channel groove 211i. The flow channel cover 211j is adapted to cover the flow channel groove 211i to form a cooling circulation channel 211b. This facilitates manufacturing and processing.

[0074] See also Figure 5 and Figure 6 Furthermore, a heat conductor 211k is protrudingly provided on the surface of the flow channel cover 211j facing the flow channel groove 211i. The heat conductor 211k extends into the flow channel groove 211i when the flow channel cover 211j is covered on the flow channel groove 211i. The heat conductor 211k can increase the area of ​​the inner surface of the cooling circulation channel 211b, thereby increasing the heat exchange area and improving the heat exchange efficiency, thereby improving the heat dissipation effect.

[0075] The structural features of the motor housing of the above embodiments may be combined arbitrarily to form other embodiments of the motor housing not shown.

[0076] The utility model also provides a motor assembly. The motor assembly 110 may include a motor shaft 112, a rotor, a stator and the motor housing 111 mentioned above.

[0077] According to the motor assembly of the present invention, by applying the above-mentioned motor housing 111, the coverage area of ​​the cooling circulation channel 111b on the periphery of the accommodating cavity 111a can be increased, thereby increasing the heat dissipation area and improving the heat dissipation efficiency.

[0078] In addition, the motor assembly 110 may further include a heat conductor 113. The heat conductor 113 is arranged to extend along the circumferential direction of the motor housing 111, and the two ends of the heat conductor 113 along the circumferential direction are spaced apart from each other. The two ends of the heat conductor 113 along the circumferential direction are close to the cooling circulation channel 111b, so as to conduct the heat of the portion of the motor housing 111 where the cooling circulation channel 111b is not arranged to the cooling circulation channel 111b. The heat dissipation area can be increased by providing the heat conductor 113.

[0079] For example, the heat conducting member 113 may be arranged on one or both sides of the motor housing 111 along the width direction D2. The heat conducting member 113 is a heat pipe. Compared with the cooling circulation channel 111b, the heat pipe requires less space in the width direction D2 of the motor housing 111, thereby helping to ensure the miniaturization of the size of the motor housing 111 in the width direction D2.

[0080] Further, the motor assembly 110 may include a plurality of heat pipes. The plurality of heat pipes are arranged at intervals along the length direction D1, so that the heat dissipation area can be increased while improving the balance of the heat dissipation effect of each part of the motor assembly 110 along the length direction D1. Both ends of the heat pipe are close to the cooling circulation channel 111b to improve the cooling effect of the part of the motor housing 111 where the cooling circulation channel 111b is not provided. In other words, heat pipes can be evenly placed on both sides of the motor housing 111 where the cooling circulation channel 111b is not provided, that is, on both sides of the motor housing 111 along the width direction D2. Both ends of the heat pipe are close to the cooling circulation channel 111b. The heat generated by the motor assembly 110 during operation is conducted by the heat pipe to the vicinity of the cooling circulation channel 111b and is taken away by the circulating cooling medium. The above arrangement can increase the heat dissipation capacity of the motor assembly 110 without increasing the size of the motor housing 111 along the width direction D2.

[0081] Furthermore, weight-reducing grooves 111m may be provided on both sides of the motor housing 111 along the width direction D2. The bottom of the weight-reducing groove 111m may be provided as an arc surface concentric with the accommodating cavity 111a. A positioning groove (not shown) suitable for positioning the heat pipe may be provided in the weight-reducing groove 111m. When the heat pipe is installed to the motor housing 111, the heat pipe partially protrudes from the inner surface of the weight-reducing groove 111m. Adjacent heat pipes are arranged at intervals. The surface of the heat pipe facing the accommodating cavity 111a is provided as an arc surface concentric with the accommodating cavity 111a, so that the heat pipe is close to the bottom surface of the weight-reducing groove 111m, thereby increasing the heat exchange area.

[0082] See also Figures 1 to 4 , and combined with Figure 5 and Figure 6 The utility model also provides a motor pump assembly. The motor pump assembly 100 may be an electric high-pressure pump assembly with a motor cooling structure. According to the utility model, the motor pump assembly 100 may include an internal gear pump 120 and the above-mentioned motor assembly 110. The motor assembly 110 is connected to the internal gear pump 120. The rotor of the motor assembly 110 drives the internal gear pump 120 to rotate directly (coaxially) or indirectly (coupling or transmission connection), so that the suction chamber and pressure chamber of the internal gear pump 120 change in volume, thereby realizing the suction and discharge functions of the oil.

[0083] According to the motor pump assembly 100 of the utility model, by applying the above motor assembly 110, the heat dissipation effect can be improved, so that the motor pump can adapt to work at a higher power for a longer time to meet the use requirements of specific or extreme working conditions. In other words, the above structure can effectively cool the motor, prevent the motor from overheating and triggering its overheat protection function, and enable the electric high-pressure pump assembly to work at high power for a long time to meet the use requirements of specific extreme working conditions.

[0084] For example, the internal gear pump 120 and the motor may be fixedly connected by bolts or other means.

[0085] The motor pump assembly 100 of the utility model, by arranging a cooling circulation channel 111b with the same structure on the side of the motor housing 111, can provide a larger heat dissipation area and a better cooling effect to the motor component 110 compared with the related art, thereby avoiding triggering the overheat protection function of the motor, and then enabling the electric high-pressure pump assembly to work at high power for a long time, thereby meeting the long-term high-power use requirements in the use scenario. Since the cooling circulation channel 111b can be arranged only on both sides of the height direction D3 of the motor, it is helpful to reduce the size of the motor component 110 along the width direction D2, and then ensure the balance of the heat dissipation efficiency and heat dissipation effect of the motor component 110 when the width of the motor component 110 is limited.

[0086] The present invention further provides an active suspension. The active suspension according to the present invention may include the motor pump assembly 100 described above.

[0087] According to the active suspension of the present invention, by applying the above-mentioned motor pump assembly 100, the active suspension can adapt to the use requirements in longer time and higher power use scenarios.

[0088] The utility model further provides a vehicle. The vehicle according to the utility model may include the above-mentioned active suspension, or the above-mentioned motor pump assembly 100, or the above-mentioned motor assembly 110,

[0089] The width direction D2 of the motor housing 111 of the motor assembly 110 may be consistent with the front-rear direction of the vehicle.

[0090] According to the vehicle of the utility model, by applying the above-mentioned active suspension, or the above-mentioned motor pump assembly 100, or the above-mentioned motor assembly 110, since the width direction D2 of the motor housing 111 is consistent with the front-to-back direction of the vehicle, by reasonably selecting the position of the cooling circulation channel 111b in the motor housing 111 to avoid the space on both sides of the width direction D2 of the motor housing 111, it is helpful to reduce the space occupied by the motor assembly 110 in the front-to-back direction of the vehicle, so that the motor assembly 110 can be applied to more vehicles. Further, the vehicle of the utility model has better performance in active suspension, which helps to improve the user experience.

[0091] The above embodiment of the present invention provides an electric high-pressure pump assembly with a motor cooling device. For a person skilled in the art, according to the concept of the embodiment of the present invention, there may be changes in the specific implementation method and application scope. In summary, the content of this specification should not be understood as a limitation of the present invention, and any changes made according to the design concept of the present invention are within the protection scope of the present invention.

[0092] 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 the present invention. The terms used herein are only for describing specific implementation purposes and are not intended to limit the present invention. Terms such as "setting" appearing in this article may indicate 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.

[0093] The utility model has been described through the above embodiments, but it should be understood that the above embodiments are only for the purpose of example and description, and are not intended to limit the utility model 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 utility model, and these variations and modifications all fall within the scope of the protection claimed by the utility model.

Claims

1. A motor housing, characterized in that: The motor housing comprises a receiving cavity and a cooling circulation channel, wherein the receiving cavity is suitable for receiving the rotor and the stator and extends along the length direction of the motor housing, and the cooling circulation channel is suitable for circulating a cooling medium and is separated from the receiving cavity. The cooling circulation channel includes a plurality of sub-channels extending along the length direction, the plurality of sub-channels are arranged at intervals along the width direction of the motor housing, and the plurality of sub-channels are connected end to end.

2. The motor housing according to claim 1, characterized in that: The motor housing comprises two cooling circulation channels, and the two cooling circulation channels are respectively located at two sides of the accommodating cavity along the height direction of the motor housing.

3. The motor housing according to claim 2, characterized in that: The motor housing has a first end and a second end along the length direction, each of the cooling circulation channels has a first port opened at the first end, and the two first ports are respectively suitable for connecting to a pump; The motor housing further includes a communication channel, which is disposed adjacent to the second end, and through which the two cooling circulation channels are communicated.

4. The motor housing according to claim 3, characterized in that: The two first ports are spaced apart from each other, and the communication channel is opened on the second end.

5. The motor housing according to claim 4, characterized in that: The ends of the two cooling circulation channels corresponding to the second ends are located on the same side of the accommodating cavity in the width direction; and / or Ends of the two cooling circulation channels corresponding to the first ends are located on the same side of the accommodating cavity in the width direction.

6. The motor housing according to claim 2, characterized in that: Both ends of the cooling circulation channel are located at the same end of the motor housing along the length direction, the two cooling circulation channels are spaced apart from each other, and both ends of the two cooling circulation channels are respectively suitable for connecting to a pump.

7. The motor housing according to any one of claims 2 to 6, characterized in that: In a cross section of the motor housing perpendicular to the length direction, each portion of the cooling circulation channel along the width direction is at the same distance from the accommodating cavity in the height direction; and / or The cross-sectional areas of the cooling circulation channel at various portions along its extending direction are the same.

8. A motor assembly, characterized in that: The motor assembly comprises a motor housing according to any one of claims 1 to 7.

9. The motor assembly according to claim 8, characterized in that The motor assembly includes a heat conductor connected to the side of the motor housing along the width direction, the heat conductor extends along the height direction of the motor housing toward the cooling circulation channel, and the heat conductor is suitable for conducting heat to the cooling circulation channel.

10. A motor pump assembly, characterized in that: The motor pump assembly comprises: a motor component according to claim 8 or 9.

11. The motor pump assembly according to claim 10, characterized in that: The motor pump assembly includes an internal gear pump connected to the motor assembly.

12. An active suspension, characterized in that: The active suspension comprises the motor pump assembly as claimed in claim 10 or 11.

13. A vehicle, characterized in that: The vehicle comprises the active suspension according to claim 12, or the motor pump assembly according to claim 10 or 11, or the motor assembly according to claim 8 or 9, or the motor housing according to any one of claims 1 to 7.

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