Motor pump assembly, suspension system and vehicle

Abstract

The utility model discloses a motor pump assembly, a suspension system and a vehicle, and relates to the technical field of vehicle suspensions.The motor pump assembly comprises a motor shell, a motor, an electric control cover and a motor controller, a motor cavity is formed in the motor shell, and the motor is contained in the motor cavity; the electric control cover covers the motor shell, and an electric control cavity is defined by the electric control cover and the motor shell. And the motor controller is accommodated in the electric control cavity. According to the technical scheme provided by the utility model, the height of the motor pump assembly is reduced, the installation space of the motor pump assembly is reduced, and the use comfort of a vehicle is improved.

Description

Technical Field

[0001] The utility model relates to the technical field of vehicle suspension, in particular to a motor pump component, a suspension system and a vehicle. Background Art

[0002] The suspension system is the general term for all force-transmitting connection devices between the vehicle frame and the axles or wheels. The main function of the suspension is to transmit all forces and moments acting between the wheels and the vehicle body, such as supporting force, braking force and driving force, etc., and to alleviate the impact load transmitted to the vehicle body by uneven road surface, attenuate the vibration caused by it, ensure the comfort of the passengers, and reduce the dynamic load of the cargo and the vehicle itself.

[0003] Motor pump assemblies are used in suspension systems to provide actively controlled hydraulic energy. They are typically mounted on the vehicle chassis. They typically consist of a motor, motor housing, pump body, pump housing, electronic control unit, and electronic control housing. The motor is mounted in the motor housing, the pump body is mounted in the pump housing, and the electronic control unit is mounted in the electronic control housing. The electronic control housing and pump housing are each connected to the motor housing.

[0004] However, the currently common motor pump assembly is large in size, requires a large installation space, occupies more vehicle chassis space, and thus compresses the space in the cockpit. Utility Model Content

[0005] The main purpose of the utility model is to provide a motor pump assembly, a suspension system and a vehicle, aiming to reduce the height of the motor pump assembly, reduce the installation space of the motor pump assembly, and improve the use comfort of the vehicle.

[0006] To achieve the above-mentioned purpose, the motor pump assembly proposed in the present invention includes:

[0007] a motor housing, wherein a motor cavity is provided in the motor housing;

[0008] a motor, the motor being housed in the motor cavity;

[0009] an electric control cover, the electric control cover covering the motor housing and enclosing an electric control cavity together with the motor housing; and

[0010] A motor controller is housed in the electric control cavity.

[0011] In one embodiment, the motor housing is provided with an electric control slot having an opening, the electric control slot and the motor cavity are independent of each other, and the electric control cover covers the electric control slot to form the electric control cavity.

[0012] In one embodiment, the electric control cover is connected to the motor housing by bolts; and / or

[0013] The electric control cover and the motor housing are sealed by sealant.

[0014] In one embodiment, the motor controller includes a control circuit board and a drive circuit board that are electrically connected, and the control circuit board and the drive circuit board are stacked in the electric control cavity.

[0015] In one embodiment, the motor cavity includes a first motor cavity and a second motor cavity, and the motor includes a first motor and a second motor. The first motor is accommodated in the first motor cavity, and the second motor is accommodated in the second motor cavity.

[0016] In one embodiment, the motor housing includes a first shell and a second shell, the first shell is provided with the first motor cavity, and the second shell is provided with the second motor cavity.

[0017] In one embodiment, the motor housing is an integral structure, and the first motor cavity and the second motor cavity are formed inside the motor housing.

[0018] In one embodiment, the motor housing is made of magnesium alloy.

[0019] In one embodiment, the first housing and the second housing are connected by bolts; and / or

[0020] The first shell and the second shell are sealed by a sealing gasket.

[0021] In one embodiment, the motor pump assembly further includes a pump housing and a gear pump installed in the pump housing, the pump housing is connected to the motor housing, and the gear pump is connected to the output shaft of the motor.

[0022] The utility model also provides a suspension system, which includes the motor pump assembly.

[0023] The utility model also provides a vehicle, comprising the motor pump assembly or the suspension system.

[0024] The technical solution of the present invention is to provide a motor housing, an electric control cover, a motor, and a motor controller in a motor pump assembly, wherein the motor housing is provided with a motor cavity for accommodating the motor, and the electric control cover covers the motor housing and, together with the motor housing, encloses an electric control cavity for accommodating the motor controller. Thus, compared with the structure in the prior art in which the motor housing and the electric control housing are provided independently of each other, the electric control cavity for accommodating the motor controller is provided in the electric control housing, and the electric control housing is then mounted on the motor housing, the present invention saves part of the electric control housing by covering the electric control cover on the motor housing and enclosing the electric control cavity with the motor housing, thereby reducing the height of the motor pump assembly, thereby saving installation space, avoiding occupying the space of the compressed cockpit, and improving the use comfort of the vehicle; and at the same time, it is also conducive to the lightweight and low cost of the motor pump assembly. BRIEF DESCRIPTION OF THE DRAWINGS

[0025] In order to more clearly illustrate the embodiments of the present invention or the technical solutions in the prior art, the following briefly introduces the drawings required for use in the embodiments or the description of the prior art. Obviously, the drawings described below are only some embodiments of the present invention. For ordinary technicians in this field, other drawings can be obtained based on the structures shown in these drawings without paying any creative work.

[0026] Figure 1 This is a structural diagram of an embodiment of a motor pump assembly provided by the utility model;

[0027] Figure 2 for Figure 1 a cross-sectional view of an embodiment of a motor pump assembly;

[0028] Figure 3 for Figure 1 Schematic diagram of the exploded structure of one embodiment of a motor pump assembly.

[0029] Description of Figure Numbers:

[0030] 100, motor housing; 110, motor cavity; 111, first motor cavity; 112, second motor cavity; 120, electric control slot; 131, first housing; 132, second housing; 133, sealing gasket;

[0031] 200, motor; 210, first motor; 220, second motor;

[0032] 300, electric control cover; 310, electric control chamber;

[0033] 400, motor controller; 410, control circuit board; 420, drive circuit board;

[0034] 500, pump housing; 510, first pump housing; 520, second pump housing;

[0035] 600, gear pump; 610, first gear pump; 620, second gear pump.

[0036] The realization of the purpose, functional features and advantages of the present invention will be further explained in conjunction with embodiments and with reference to the accompanying drawings. DETAILED DESCRIPTION

[0037] The following will be combined with the drawings in the embodiments of the present invention to clearly and completely describe the technical solutions in the embodiments of the present invention. Obviously, the embodiments described are only part of the embodiments of the present invention, not all of the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in this field without making creative efforts shall fall within the scope of protection of the present invention.

[0038] It should be noted that if the embodiments of the present invention involve directional indications (such as up, down, left, right, front, back, etc.), the directional indications are only used to explain the relative position relationship, movement status, etc. between the components in a certain specific posture. If the specific posture changes, the directional indications will also change accordingly.

[0039] In addition, if there are descriptions involving "first", "second", etc. in the embodiments of the present invention, the descriptions of "first", "second", etc. are only for descriptive purposes and cannot be understood as indicating or implying their relative importance or implicitly indicating the number of the indicated technical features. Therefore, the features limited to "first" and "second" may explicitly or implicitly include at least one of such features. In addition, if "and / or" or "and / or" appears in the full text, its meaning includes three parallel schemes. Taking "A and / or B" as an example, it includes scheme A, or scheme B, or a scheme in which A and B are satisfied at the same time. In addition, the technical solutions between the various embodiments can be combined with each other, but it must be based on the ability of ordinary technicians in this field to implement. When the combination of technical solutions is mutually contradictory or cannot be implemented, it should be deemed that such a combination of technical solutions does not exist and is not within the scope of protection required by the present invention.

[0040] The suspension system is the general term for all force-transmitting connection devices between the vehicle frame and the axles or wheels. The main function of the suspension is to transmit all forces and moments acting between the wheels and the vehicle body, such as supporting force, braking force and driving force, etc., and to alleviate the impact load transmitted to the vehicle body by uneven road surface, attenuate the vibration caused by it, ensure the comfort of the passengers, and reduce the dynamic load of the cargo and the vehicle itself.

[0041] Motor pump assemblies are used in suspension systems to provide actively controlled hydraulic energy. They are typically mounted on the vehicle chassis. They typically consist of a motor, motor housing, pump body, pump housing, electronic control unit, and electronic control housing. The motor is mounted in the motor housing, the pump body is mounted in the pump housing, and the electronic control unit is mounted in the electronic control housing. The electronic control housing and pump housing are each connected to the motor housing.

[0042] However, the currently common motor pump assembly is large in size, requires a large installation space, occupies more vehicle chassis space, especially occupies too much Z-direction space, thereby compressing the space in the cockpit.

[0043] The utility model provides a motor pump assembly.

[0044] See also Figures 1 to 3 In one embodiment of the present invention, the motor pump assembly includes a motor housing 100, a motor 200, an electric control cover 300, and a motor controller 400. The motor housing 100 is provided with a motor cavity 110, the motor 200 is accommodated in the motor cavity 110, and the output shaft of the motor 200 extends through the motor cavity 110. The motor 200 cover is placed on the motor housing 100 and, together with the motor housing 100, encloses an electric control cavity 310, in which the motor controller 400 is accommodated. That is, the cavity wall of the electric control cavity 310 includes the electric control cover 300 and part of the motor housing 100. When the motor pump assembly is installed on the vehicle chassis, the motor controller 400 is generally located above the motor 200, where the above refers to the side facing the roof along the height direction of the vehicle.

[0045] Thus, compared to a structure in which the motor housing 100 and the electronic control housing are separately provided and connected, and the motor controller 400 is installed in the electronic control housing, the present invention utilizes the motor housing 100 and the electronic control cover 300 to enclose the electronic control cavity 310, thereby saving part of the electronic control housing and reducing the overall height of the motor pump assembly. This, in turn, allows the motor pump assembly to occupy less Z-direction installation space, avoiding compression of the cockpit space and thereby improving vehicle comfort. The Z-direction refers to the height direction of the vehicle.

[0046] The technical solution of the present invention is to set a motor housing 100, an electric control cover 300, a motor 200 and a motor controller 400 in the motor pump assembly, wherein the motor housing 100 is provided with a motor cavity 110 for accommodating the motor 200, and the electric control cover 300 covers the motor housing 100 and, together with the motor housing 100, encloses an electric control cavity 310 for accommodating the motor controller 400. In this way, compared with the structure in the prior art in which the motor housing 100 and the electric control housing are independently provided, the electric control cavity 310 for accommodating the motor controller 400 is provided in the electric control housing and then the electric control housing is installed on the motor housing 100, the present invention saves part of the electric control housing by covering the electric control cover 300 on the motor housing 100 and enclosing the electric control cavity 310 together with the motor housing 100, thereby reducing the height of the motor pump assembly, thereby saving installation space, avoiding occupying the space of the compressed cockpit, and improving the use comfort of the vehicle; at the same time, it is also conducive to the lightweight and low cost of the motor pump assembly.

[0047] See also Figure 2 In an embodiment of the present invention, an electric control slot 120 with an opening is provided on the motor housing 100 . The electric control slot 120 and the motor cavity 110 are independent of each other. The electric control cover 300 covers the electric control slot 120 to form an electric control cavity 310 .

[0048] Specifically, for ease of explanation, in the motor pump assembly, the direction in which the motor controller 400 is located is defined as upward, and the direction in which the motor 200 is located is defined as downward. In one embodiment, the motor housing 100 is provided with a motor cavity 110 and an electric control slot 120, wherein the electric control slot 120 is located above the motor cavity 110 and has an opening, that is, the motor housing 100 serves as the bottom wall of the electric control slot 120. When installing the motor controller 400, the motor controller 400 is first installed in the electric control slot 120, and then the electric control cover 300 is placed over the opening of the electric control slot 120, thereby accommodating the motor controller 400 within the motor cavity 110. In this way, the electric control slot 120 with an opening is provided on the motor housing 100, and the electric control cover 300 is placed over the opening. This ensures that the electric control cavity 310 can accommodate the installation of the motor controller 400 while also facilitating the connection between the electric control cover 300 and the motor housing 100.

[0049] Of course, in other embodiments, an electric control slot 120 with an opening may be provided on the electric control cover 300 , and the motor housing 100 is connected to the opening of the electric control slot 120 .

[0050] In an embodiment of the present invention, the electric control cover 300 is connected to the motor housing 100 by bolts; and / or the electric control cover 300 and the motor housing 100 are sealed by a sealant.

[0051] Specifically, the electric control cover 300 is connected to the motor housing 100 by bolts. In one embodiment, the motor housing 100 is provided with a first threaded hole, and the electric control cover 300 is provided with a first connecting hole. Bolts pass through the first connecting hole and the first threaded hole to connect the electric control cover 300 and the motor housing 100 together.

[0052] In one embodiment, to ensure the sealing of the electric control cavity 310 and the normal use of the motor controller 400, sealant is applied to the end surface of the electric control cover 300 facing the motor housing 100 and the end surface of the motor housing 100 facing the electric control cover 300, thereby sealingly connecting the electric control cover 300 and the motor housing 100. Of course, in other embodiments, the electric control cover 300 and the motor housing 100 may also be sealed by a sealing gasket.

[0053] See also Figure 2 In an embodiment of the present invention, the motor controller 400 includes a control circuit board 410 and a drive circuit board 420 that are electrically connected. The control circuit board 410 and the drive circuit board 420 are stacked in the electric control cavity 310 .

[0054] Specifically, the motor controller 400 includes a control circuit board 410 and a drive circuit board 420. It is understood that the motor cavity 110 is roughly cylindrical, and the motor housing 100 is provided with an electric control slot 120. The cross-sectional shape of the bottom wall of the electric control slot 120 is roughly arc-shaped. To ensure that the control circuit board 410 and the drive circuit board 420 can be installed in the electric control cavity 310, the control circuit board 410 and the drive circuit board 420 are arranged in a stacked manner in the electric control cavity 310. This further facilitates the integration of the motor pump assembly. In one embodiment, the control circuit board 410 and the drive circuit board 420 are respectively mounted on the motor housing 100 or the electric control cover 300 by bolts, and the control circuit board 410 and the drive circuit board 420 are electrically connected via a flexible circuit board.

[0055] See also Figure 2 and Figure 3 In an embodiment of the present invention, the motor 200 includes a first motor 210 and a second motor 220 , the motor cavity 110 includes a first motor cavity 111 and a second motor cavity 112 , the first motor 210 is accommodated in the first motor cavity 111 , and the second motor 220 is accommodated in the second motor cavity 112 .

[0056] Specifically, in one embodiment, the motor 200 includes a first motor 210 and a second motor 220. Thus, two motors 200 are provided in the motor-pump assembly, enabling the motor-pump assembly to simultaneously provide hydraulic energy to two shock absorber assemblies in the suspension system. The two shock absorber assemblies can be mounted on the left and right wheel sides of the front end of the vehicle, or on the left and right wheel sides of the rear end of the vehicle. This facilitates the high integration of the motor-pump assembly and the miniaturization of the suspension system.

[0057] See also Figure 2 and Figure 3 In an embodiment of the present invention, the motor housing 100 includes a first housing 131 and a second housing 132 . The first housing 131 defines a first motor cavity 111 , and the second housing 132 defines a second motor cavity 112 .

[0058] Specifically, in one embodiment, the motor housing 100 includes a first housing 131 and a second housing 132 that are detachably connected. This facilitates installation of the motor 200 within the motor housing 100, thereby improving the convenience of installing the motor 200. In one embodiment, the first motor cavity 111 is disposed within the first housing 131, and the second motor cavity 112 is disposed within the second housing 132. This facilitates sealing of the first and second motor cavities 111, 112, and prevents leakage of coolant from the motor 200.

[0059] Of course, in other embodiments, the first housing 131 may be formed with a portion of the first motor cavity 111 and a portion of the second motor cavity 112, and the second housing 132 may be formed with a portion of the first motor cavity 111 and a portion of the second motor cavity 112. When the first housing 131 and the second housing 132 are connected, they enclose a complete first motor cavity 111 and a complete second motor cavity 112. That is, the motor housing 100 is divided into the first housing 131 and the second housing 132 along the axial direction of the motor 200.

[0060] See also Figures 1 to 3 In an embodiment of the present invention, the first shell 131 and the second shell 132 are connected by bolts; and / or, the first shell 131 and the second shell 132 are sealed by a sealing gasket 133.

[0061] Specifically, the first housing 131 and the second housing 132 are connected by bolts. In one embodiment, the first housing 131 is provided with a first mounting hole, and the second housing 132 is provided with a second mounting hole. Bolts pass through the first and second mounting holes to connect the first and second housings 131, 132. This bolted connection ensures a stable and secure connection between the first and second housings 131, 132. Of course, in other embodiments, the first and second housings 131, 132 can also be connected by a snap-fit or screw-fit connection.

[0062] To ensure the seal of motor housing 100, a sealing gasket 133 is provided between first housing 131 and second housing 132. In one embodiment, a mounting groove is provided on one of first housing 131 and second housing 132, into which sealing gasket 133 is mounted. This improves the installation stability of sealing gasket 133 and prevents it from falling off. When first housing 131 and second housing 132 are connected, the other housing abuts against sealing gasket 133, thereby ensuring the seal of the connection between first housing 131 and second housing 132. In one embodiment, sealing gasket 133 is configured as a steel gasket.

[0063] Of course, in other embodiments, the first shell 131 and the second shell 132 may also be sealed by a sealant.

[0064] Since there are two motors 200, one on the left and one on the right, in the motor pump assembly, and the pump heads respectively matched therewith provide hydraulic energy for the left and right wheels, the traditional left and right motor housings are assembled separately, which not only brings the problem of poor sealing performance of the joint surface, but also increases the cost.

[0065] In order to solve the sealing and cost issues of assembling the left and right motor housings in the motor pump assembly, in one embodiment, the motor housing 100 is an integral structure, and the motor housing 100 has a first motor cavity 111 and a second motor cavity 112. In this way, compared with the two separate first and second housings 131 and 132, the integrated dual motor housing structure does not need to consider the sealing problem between the two housings. The stator and rotor of the motor 200 are assembled from the left and right ends of the integrated motor housing 100 respectively, which enhances the sealing performance, simplifies the structure and also ensures the assembly process. The integrated dual motor housing structure can avoid the problem of assembly seal failure between the motor housings, reduces the assembly process and the corresponding connecting bolts, and further reduces the production cost.

[0066] In the embodiment of the present invention, the motor housing 100 is made of magnesium alloy.

[0067] Understandably, the range of new energy vehicles is limited not only by the three-electric system but also by the overall weight of the vehicle. Reducing the weight of components can effectively improve vehicle range. The motor housing 100 accounts for the majority of the entire motor pump assembly housing. Therefore, a magnesium alloy with lower density, higher strength, improved die-casting properties, and better thermal conductivity is used to manufacture the motor housing 100. The use of magnesium alloy provides the motor housing 100 with advantages such as higher strength, lighter weight, improved thermal conductivity, and die-casting properties, significantly improving the performance of the suspension system and vehicle.

[0068] See also Figures 1 to 3 In an embodiment of the present invention, the motor pump assembly further includes a pump housing 500 and a gear pump 600 installed in the pump housing 500 . The pump housing 500 is connected to the motor housing 100 , and the gear pump 600 is connected to the output shaft of the motor 200 .

[0069] As will be understood, the gear pump 600 in the motor-pump assembly is primarily used to deliver lubricating fluids. In a suspension system, the gear pump 600 can be used to deliver hydraulic oil. In one embodiment, the motor-pump assembly is provided with a first motor 210 and a second motor 220. Accordingly, the gear pump 600 includes a first gear pump 610 and a second gear pump 620. The pump housing 500 includes a first pump housing 510 and a second pump housing 520, wherein the first gear pump 610 is housed in the first pump housing 510 and the second gear pump 620 is housed in the second pump housing 520. Thus, the arrangement of the first pump housing 510 and the second pump housing 520 provides protection for the first gear pump 610 and the second gear pump 620. The first pump housing 510 and the second pump housing 520 are connected to the first housing 131 and the second housing, respectively. The first gear pump 610 and the second gear pump 620 are in driving connection with the output shafts of the first motor 210 and the second motor 220, respectively. This arrangement helps reduce the axial dimension of the motor-pump assembly.

[0070] The present utility model also proposes a suspension system, which includes a motor pump assembly. The specific structure of the motor pump assembly refers to the above-mentioned embodiment. Since this suspension system adopts all the technical solutions of all the above-mentioned embodiments, it has at least all the beneficial effects brought about by the technical solutions of the above-mentioned embodiments, which will not be described one by one here.

[0071] The present utility model also proposes a vehicle, which includes a motor pump assembly or a suspension system. The specific structure of the motor pump assembly or the suspension system refers to the above-mentioned embodiments. Since this vehicle adopts all the technical solutions of all the above-mentioned embodiments, it has at least all the beneficial effects brought about by the technical solutions of the above-mentioned embodiments, which will not be described one by one here.

[0072] The above description is merely an exemplary embodiment of the present invention and does not limit the patent scope of the present invention. All equivalent structural transformations made using the contents of the present invention specification and drawings under the technical concept of the present invention, or direct / indirect application in other related technical fields are included in the patent protection scope of the present invention.

Claims

1. A motor pump assembly, characterized in that: include: a motor housing, wherein a motor cavity is provided in the motor housing; a motor, the motor being housed in the motor cavity; An electric control cover, which covers the motor housing and forms an electric control cavity together with the motor housing; as well as A motor controller is housed in the electric control cavity.

2. The motor pump assembly according to claim 1, wherein: The motor housing is provided with an electric control slot with an opening, the electric control slot and the motor cavity are independent of each other, and the electric control cover covers the electric control slot to form the electric control cavity.

3. The motor pump assembly according to claim 1, wherein: The electric control cover is connected to the motor housing by bolts; and / or The electric control cover and the motor housing are sealed by sealant.

4. The motor pump assembly according to claim 1, wherein: The motor controller includes a control circuit board and a drive circuit board that are electrically connected. The control circuit board and the drive circuit board are stacked in the electric control cavity.

5. The motor pump assembly according to claim 1, wherein: The motor cavity includes a first motor cavity and a second motor cavity, and the motor includes a first motor and a second motor. The first motor is accommodated in the first motor cavity, and the second motor is accommodated in the second motor cavity.

6. The motor pump assembly according to claim 5, wherein: The motor housing includes a first shell and a second shell. The first shell is provided with the first motor cavity, and the second shell is provided with the second motor cavity.

7. The motor pump assembly according to claim 5, wherein: The motor housing is an integral structure, and the interior of the motor housing comprises the first motor cavity and the second motor cavity.

8. The motor pump assembly according to claim 6 or 7, characterized in that The motor shell is made of magnesium alloy.

9. The motor pump assembly according to claim 6, wherein: The first housing and the second housing are connected by bolts; and / or The first shell and the second shell are sealed by a sealing gasket.

10. The motor pump assembly according to claim 1, wherein: The motor pump assembly further includes a pump housing and a gear pump installed in the pump housing. The pump housing is connected to the motor housing, and the gear pump is connected to the output shaft of the motor.

11. A suspension system, characterized in that: Comprising the motor pump assembly according to any one of claims 1 to 10.

12. A vehicle, characterized in that: Comprising a motor pump assembly as claimed in any one of claims 1 to 10, or comprising a suspension system as claimed in claim 11.

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