Electric hydraulic pump, active hydraulic suspension and automobile

Abstract

The utility model relates to the technical field of vehicles, in particular to an electric hydraulic pump, an active hydraulic suspension and an automobile. The electric hydraulic pump comprises a pump assembly, a motor, a driving module, a control module and a pressure sensor. The motor is provided with a motor shaft and is in transmission connection with the pump assembly through the motor shaft; the driving module is arranged on the peripheral side of the motor and is electrically connected with the motor; the control module is arranged at the end, away from the pump assembly, of the motor in the axial direction of the motor shaft. The control module is electrically connected with the driving module; the pressure sensor is arranged on the motor or the pump assembly and used for detecting fluid pressure, and the pressure sensor is electrically connected to the driving module and electrically connected with the control module through the driving module. The pressure sensor is connected with the driving module, a detection signal of the pressure sensor can be transmitted to the driving module firstly, then the detection signal is transmitted to the control module through the driving module, and the problem that connection is difficult due to the fact that the pressure sensor is far away from the control module is solved.

Description

Technical Field

[0001] This application relates to the field of vehicle technology, and in particular to an electro-hydraulic pump, an active hydraulic suspension, and an automobile. Background Technology

[0002] An electric hydraulic pump can be connected to a shock absorber through a hydraulic circuit to form a closed-loop hydraulic system, providing power to the shock absorber and adjusting the damping force of the shock absorber by controlling the flow direction and pressure of the hydraulic oil.

[0003] In related technologies, electric hydraulic pumps include motors, pump bodies, pressure detectors, and control boards. The pressure detector is used to detect the internal pressure of the pump body and feed the pressure value back to the control structure. However, due to the large number of internal parts of electric hydraulic pumps, the pressure detector and control board are usually far apart, making connection difficult and wiring inconvenient. Utility Model Content

[0004] Therefore, it is necessary to provide an electric hydraulic pump to facilitate the connection of the pressure detector and the control board.

[0005] An electric hydraulic pump includes a pump assembly, a motor, a drive module, a control module, and a pressure sensor. The motor has a motor shaft and is driven to the pump assembly. The drive module is located on the outer periphery of the motor and is electrically connected to the motor. The control module is located along the axial direction of the motor shaft at the end of the motor opposite to the pump assembly. The control module is electrically connected to the drive module. The pressure sensor is located on the motor or the pump assembly and is used to detect fluid pressure. The pressure sensor is electrically connected to the drive module and is electrically connected to the control module through the drive module.

[0006] Understandably, the control module is connected to the drive module to send control signals. The drive module converts these control signals into drive signals and transmits them to the motor to drive the motor. The motor then drives the pump assembly to pump oil outwards. The pressure sensor can detect the oil pressure within the pump assembly in real time and transmit the detection signal to the control module for judgment. This facilitates real-time monitoring of the oil output from the pump assembly and timely adjustments to meet operating requirements. This application, by connecting the pressure sensor to the drive module, allows the pressure sensor's detection signal to be transmitted to the drive module first, and then the drive module transmits the detection signal to the control module, overcoming the problem of connection difficulties caused by the pressure sensor being far from the control module.

[0007] In one embodiment, the electro-hydraulic pump further includes a first connector through which the pressure sensor is electrically connected to the drive module.

[0008] In one embodiment, the pressure sensor includes a pressure sensing body and a pressure sensing circuit board connected to the pressure sensing body; the electric hydraulic pump further includes a first connector, and the pressure sensing circuit board is electrically connected to the drive module through the first connector.

[0009] In one embodiment, the first connector includes a first connecting portion and a first plug-in portion that are mutually plugged into each other, wherein one of the first connecting portion and the first plug-in portion is disposed on the pressure sensor and the other is disposed on the drive module.

[0010] In one embodiment, the drive module includes a drive board, and the pressure sensor is electrically connected to the drive board; the control module includes a control board, and the control board is electrically connected to the drive board.

[0011] In one embodiment, the electric hydraulic pump further includes a second connector, through which the control board is electrically connected to the drive board; the second connector includes a second connecting portion and a second plug-in portion that are mutually inserted and mated, one of the second connecting portion and the second plug-in portion being disposed on the drive board and the other being disposed on the control board.

[0012] In one embodiment, the drive module further includes a power board; the power board and the drive board are arranged at intervals along the radial direction of the motor axis, and the drive board is located on the side of the power board facing the motor; the electric hydraulic pump further includes a third connector, the third connector including a third connecting part and a third plug-in part that are mutually plugged in, one of the third connecting part and the third plug-in part being disposed on the power board and the other being disposed on the drive board, and the power board being electrically connected to the drive board through the third connector.

[0013] In one embodiment, the electro-hydraulic pump further includes a position sensor connected to one end of the motor shaft away from the pump assembly and electrically connected to the control board.

[0014] In one embodiment, the electric hydraulic pump further includes a fourth connector, which includes a fourth connecting part and a fourth plug-in part that are mutually inserted and mated. One of the fourth connecting part and the fourth plug-in part is disposed on the position sensor, and the other is disposed on the control board. The position sensor is electrically connected to the control board through the fourth connector.

[0015] In one embodiment, the electric hydraulic pump further includes a signal connector electrically connected to the control board.

[0016] In one embodiment, the electric hydraulic pump further includes a fifth connector, which includes a fifth connecting portion and a fifth plug portion that are mutually plugged in. One of the fifth connecting portion and the fifth plug portion is located on the signal connector, and the other is located on the control board. The signal connector is electrically connected to the control board through the fifth connector.

[0017] In one embodiment, along the axial direction of the motor shaft, a motor, a pump assembly correspondingly connected to the motor, a drive module correspondingly connected to the motor, and a corresponding pressure sensor are respectively provided on both sides of the control module; each motor and the pressure sensor are respectively connected to the corresponding drive module, and are collectively connected to the control module through the drive module.

[0018] This application also provides an active hydraulic suspension, which includes a shock absorber and the aforementioned electro-hydraulic pump, wherein the electro-hydraulic pump is in fluid communication with the shock absorber.

[0019] This application also provides an automobile that includes the above-described active hydraulic suspension. Attached Figure Description

[0020] To more clearly illustrate the technical solutions in the embodiments of this application or the conventional technology, the drawings used in the description of the embodiments or the conventional technology will be briefly introduced below. Obviously, the drawings described below are only some embodiments of this application. For those skilled in the art, other drawings can be obtained based on these drawings without creative effort.

[0021] Figure 1 A partial structural schematic diagram of the electric hydraulic pump provided in this application from one perspective;

[0022] Figure 2 An exploded view of the connection between the drive plate and the pressure sensor in the electro-hydraulic pump provided in this application;

[0023] Figure 3 An exploded view of the structure of the pressure sensor in the electric hydraulic pump provided in this application;

[0024] Figure 4 This is a partial structural cross-sectional view of the electric hydraulic pump provided in this application;

[0025] Figure 5 An exploded view of a partial structure of the electric hydraulic pump provided in this application;

[0026] Figure 6 An exploded view of the connection between the drive board and the power supply board in the electric hydraulic pump provided in this application;

[0027] Figure 7 A partial structural schematic diagram of the electric hydraulic pump provided in this application from another perspective;

[0028] Figure 8 An exploded view of the electro-hydraulic pump provided in this application.

[0029] Reference numerals: 100, electric hydraulic pump; 10, drive module; 11, drive board; 12, power board; 20, control module; 21, control board; 31, pressure sensor; 311, pressure sensor body; 3111, elastic connector; 312, pressure sensor circuit board; 3121, through hole; 3122, connecting contact point; 313, signal transmission line; 314, first support frame; 3141, assembly protrusion; 31411, assembly cavity; 3142, wiring cavity; 32, position sensor; 41, first connector; 411, first connecting part; 412. First insertion part; 42. Second connector; 421. Second connecting part; 422. Second insertion part; 43. Third connector; 431. Third connecting part; 432. Third insertion part; 44. Fourth connector; 441. Fourth connecting part; 442. Fourth insertion part; 45. Fifth connector; 451. Fifth connecting part; 452. Fifth insertion part; 50. Housing assembly; 51. Motor housing; 52. Top cover; 501. Motor cavity; 502. Control cavity; 503. Drive cavity; 61. Power connector; 62. Signal connector. Detailed Implementation

[0030] To make the above-mentioned objectives, features, and advantages of this application more apparent and understandable, the specific embodiments of this application are described in detail below with reference to the accompanying drawings. Many specific details are set forth in the following description to provide a thorough understanding of this application. However, this application can be implemented in many other ways different from those described herein, and those skilled in the art can make similar modifications without departing from the spirit of this application. Therefore, this application is not limited to the specific embodiments disclosed below.

[0031] It should be noted that when a component is referred to as being "fixed to," "set on," or "properly placed on" another component, it can be directly on the other component or there may be an intermediate component. When a component is considered to be "connected to" another component, it can be directly connected to the other component or there may be an intermediate component present. The terms "vertical," "horizontal," "upper," "lower," "left," "right," and similar expressions used in this application's specification are for illustrative purposes only and do not represent the only possible implementation.

[0032] Furthermore, the terms "first" and "second" are used for descriptive purposes only and should not be construed as indicating or implying relative importance or implicitly specifying the number of technical features indicated. Thus, a feature defined as "first" or "second" may explicitly or implicitly include at least one of that feature. In the description of this application, "multiple" means at least two, such as two, three, etc., unless otherwise explicitly specified.

[0033] In this application, unless otherwise expressly specified and limited, "above" or "below" the second feature can mean that the first feature is in direct contact with the second feature, or that the first feature and the second feature are in indirect contact through an intermediate medium. Furthermore, "above," "over," and "on top" the second feature can mean that the first feature is directly above or diagonally above the second feature, or simply indicates that the first feature is at a higher horizontal level than the second feature. "Below," "below," and "under" the second feature can mean that the first feature is directly below or diagonally below the second feature, or simply indicates that the first feature is at a lower horizontal level than the second feature.

[0034] Unless otherwise defined, all technical and scientific terms used in this application have the same meaning as commonly understood by one of ordinary skill in the art to which this application belongs. The terminology used in this application is for the purpose of describing particular embodiments only and is not intended to be limiting of the application. The term "and / or" as used in this application includes any and all combinations of one or more of the associated listed items.

[0035] Please see Figures 1 to 8 This application provides an electric hydraulic pump 100, which includes a pump assembly and a motor. The motor is provided with a motor shaft and is connected to the pump assembly through the motor shaft drive, so as to drive the pump assembly to operate through the motor shaft, thereby outputting oil to the outside.

[0036] In some embodiments, the electric hydraulic pump 100 further includes a drive module 10 and a control module 20; the drive module 10 is disposed on the outer periphery of the motor and electrically connected to the motor; the control module 20 is disposed along the axial direction of the motor shaft at the end of the motor away from the pump assembly, and the control module 20 is electrically connected to the drive module 10. Thus, the control module 20 can transmit control signals to the drive module 10, and the drive module 10 can convert the control signals into drive signals and transmit them to the motor to control the operating state of the motor, thereby changing the output of the pump assembly's oil in real time to meet the operating requirements.

[0037] like Figure 1 and Figure 8As shown, in some embodiments, the electric hydraulic pump 100 further includes a pressure sensor 31, which is located in the motor or pump assembly and is used to detect the fluid pressure within the pump assembly. The pressure sensor 31 is electrically connected to the drive module 10 and, through the drive module 10, is electrically connected to the control module 20. Thus, the pressure sensor 31 can transmit the detected signal to the control module 20 via the drive module 10, allowing the control module 20 to analyze and compare it with actual operating conditions, and adjust the motor in real time based on the comparison results.

[0038] Since the control module 20 is located at the end of the motor away from the pump assembly, and the pressure sensor 31 is located on either the motor or the pump assembly, the distance between the pressure sensor 31 and the control module 20 is relatively far. Direct connection could easily result in excessively long cabling, causing interference to other structures. Therefore, by first electrically connecting the pressure sensor 31 to the drive module 10, and then electrically connecting the drive module 10 to the control module 20, the long-distance connection between the pressure sensor 31 and the control module 20 is overcome, and a long cabling is not required, thus avoiding interference to other structures.

[0039] In summary, it is the connection between the drive module 10 and the pressure sensor 31 that enables the long-distance connection between the pressure sensor 31 and the control module 20, eliminating the need for complicated wiring, making the connection simpler and the operation more convenient.

[0040] like Figure 2 and Figure 3 As shown, in an optional embodiment, the electric hydraulic pump 100 further includes a first connector 41, through which the pressure sensor 31 is electrically connected to the drive module 10. This arrangement eliminates the need for wired connections, avoiding interference from cabling and facilitating maintenance. In other embodiments, the pressure sensor 31 may also be directly welded to the drive module 10.

[0041] In a specific embodiment, the pressure sensor 31 includes a pressure sensing body 311 and a pressure sensing circuit board 312 connected to the pressure sensing body 311. The pressure sensing body 311 can transmit the detected signal to the pressure sensing circuit board 312. In some embodiments, the pressure sensing circuit board 312 in the pressure sensor 31 is electrically connected to the drive module 10 through a first connector 41, so that the pressure sensing circuit board 312 transmits the signal detected by the pressure sensing body 311 to the drive module 10 through the first connector 41.

[0042] like Figure 3As shown, in a specific embodiment, the pressure sensing circuit board 312 is provided with a plurality of spaced connection contacts 3122. Correspondingly, the pressure sensing body 311 is provided with an elastic connector 3111. The elastic connector 3111 is connected to the connection contacts 3122 to realize the electrical connection between the pressure sensing body 311 and the pressure sensing circuit board 312. The structure is simple and the operation is convenient.

[0043] like Figure 2 As shown, in a further embodiment, the first connector 41 includes a first connecting portion 411 and a first plug-in portion 412 that are mutually inserted. One of the first connecting portion 411 and the first plug-in portion 412 is disposed on the pressure sensor 31, and the other is disposed on the drive module 10. Thus, the pressure sensor 31 and the drive module 10 are connected by plugging, making assembly quick and convenient, improving assembly production efficiency, and facilitating worker operation. Specifically, the connecting portions of the first plug-in portion 412 and the first connecting portion 411 are made of metal to facilitate electrical connection.

[0044] For example, the first plug-in portion 412 is disposed on the pressure sensor 31, the first connection portion 411 is disposed on the drive module 10, the drive module 10 is provided with a drive circuit that can be electrically connected to the first connection portion 411, and the pressure sensing circuit board 312 of the pressure sensor 31 is electrically connected to the first plug-in portion 412; of course, the first plug-in portion 412 can also be disposed on the drive module 10, and the first connection portion 411 can also be disposed on the pressure sensor 31.

[0045] In one embodiment, the first plug-in portion 412 includes a rigid pin, and the first connecting portion 411 is provided with a plug-in hole. The rigid pin is inserted into the plug-in hole, which has a simple structure and is convenient to plug in.

[0046] In another embodiment, the first insertion portion 412 includes an insertion piece, and the first connecting portion 411 includes at least two spaced elastic terminals with an insertion gap between them, and the insertion piece is inserted into the insertion gap. The insertion piece has a large contact area to facilitate contact with the elastic terminals, thereby improving insertion stability; the elastic terminals are capable of elastic deformation under force to clamp the insertion piece.

[0047] like Figure 3As shown, taking the first connector 412 including a rigid pin as an example, the pressure sensor 31 also includes a signal transmission line 313. One end of the signal transmission line 313 is connected to the pressure sensing circuit board 312, and the other end is connected to the rigid pin. This configuration results in a smaller rigid pin, reducing space usage and the size of the first connector 412, and facilitating easy insertion and removal. The signal transmission line 313 is provided inside the pressure sensor 31 to electrically connect the rigid pin to the pressure sensing circuit board 312, thereby achieving an electrical connection between the rigid pin and the pressure sensing body 311. In other embodiments, when the first connector 412 includes a connector tab, the signal transmission line 313 can also be connected to the connector tab, similar to the above, and will not be described in detail here.

[0048] like Figure 3 As shown, in some embodiments, the pressure sensor 31 further includes a first support frame 314 connected to the pressure sensing circuit board 312. The first support frame 314 is provided with a mounting protrusion 3141. The mounting protrusion 3141 surrounds a mounting cavity 31411. The signal transmission line 313 passes through the mounting cavity 31411, and a rigid pin is provided in the mounting cavity 31411. The rigid pin and the mounting protrusion 3141 together define a first insertion portion 412. The mounting cavity 31411 is provided to accommodate and protect the rigid pin, reducing interference during insertion.

[0049] like Figure 2 As shown, in some embodiments, the drive module 10 includes a drive board 11, and the drive circuit is disposed on the drive board 11. The drive board 11 is provided with a first connecting part 411, which protrudes from the drive board 11 toward the pressure sensor 31 to facilitate the insertion and assembly of the assembly cavity 31411. The first connecting part 411 is provided with a plurality of spaced-apart pin holes, and each pin hole corresponds to the insertion of a rigid pin. The structure is simple and the assembly is convenient.

[0050] like Figure 3 As shown, in a further embodiment, the first support frame 314 is provided with a wiring cavity 3142, which is connected to the assembly cavity 31411. The signal transmission line 313 passes through the wiring cavity 3142 and the assembly cavity 31411 to accommodate and protect the signal transmission line 313.

[0051] like Figure 3As shown, more specifically, the pressure sensing circuit board 312 is disposed on one side of the first support frame 314 along the motor shaft axis. The first support frame 314 is recessed to form a wiring cavity 3142 on the side opposite to the pressure sensing circuit board 312. The pressure sensing circuit board 312 has a through hole 3121 along the motor shaft axis. The signal transmission line 313 passes through the through hole 3121 and is accommodated in the wiring cavity 3142. The through hole 3121 can limit the position of the signal transmission line 313, facilitating its fixation at the through hole 3121. For example, the signal transmission line 313 can be soldered to the pressure sensing circuit board 312 at the through hole 3121 to achieve electrical connection with the pressure sensing circuit board 312.

[0052] like Figure 1 , Figure 4 , Figure 5 and Figure 8 As shown, in some embodiments, the control module 20 includes a control board 21, which has a control circuit for electrically connecting with the drive circuit of the drive board 11.

[0053] like Figure 4 As shown, in some embodiments, the electric hydraulic pump 100 further includes a second connector 42, through which the control board 21 is electrically connected to the drive board 11. The second connector 42 includes a second connecting portion 421 and a second plug-in portion 422 that are mutually inserted and mated. One of the second connecting portion 421 and the second plug-in portion 422 is located on the drive board 11, and the other is located on the control board 21. In this way, the control board 21 and the drive board 11 are plugged and connected, which facilitates rapid assembly and mating between the two, further improving assembly efficiency, and eliminating the need for wiring, thus avoiding interference with the component structure.

[0054] In some embodiments, the second plug-in portion 422 is disposed on the control board 21, the second connection portion 421 is disposed on the drive board 11, the drive board 11 is provided with a drive circuit that can be electrically connected to the second connection portion 421, and the control circuit of the control board 21 is electrically connected to the second plug-in portion 422; of course, the second plug-in portion 422 can also be disposed on the drive board 11, and the second connection portion 421 can also be disposed on the control board 21.

[0055] Specifically, the connecting portions of the second plug-in portion 422 and the second connecting portion 421 are made of metal to facilitate electrical connection. For details regarding the specific structure of the second plug-in portion 422 and the second connecting portion 421, please refer to different embodiments of the first plug-in portion 412 and the first connecting portion 411; further details will not be provided here.

[0056] like Figures 5 to 8As shown, in a further embodiment, the drive module 10 also includes a power board 12. The power board 12 has a power circuit that is electrically connected to the drive circuit of the drive board 11. The power board 12 is connected to external power and can input current to the drive board 11, which then inputs it to the motor to promote the operation of the motor. Figure 1 , Figure 7 and Figure 8 As shown, in a specific embodiment, the electric hydraulic pump 100 also includes a power connector 61, which is inserted into the power board 12 to facilitate the power board 12 to connect to external power.

[0057] like Figure 1 , Figure 4 , Figure 5 , Figure 6 , Figure 7 and Figure 8 As shown, in some embodiments, the power supply board 12 and the drive board 11 are arranged at intervals along the radial direction of the motor axis, and the drive board 11 is located on the side of the power supply board 12 facing the motor, so that the drive board 11 is set close to the pressure sensor 31, which facilitates the connection between the drive board 11 and the pressure sensor 31 and helps to reduce the axial dimension of the entire electric hydraulic pump 100.

[0058] like Figure 5 and Figure 6 As shown, in a specific embodiment, the electric hydraulic pump 100 further includes a third connector 43. The third connector 43 includes a third connecting part 431 and a third plugging part 432 that are mutually plugged in. One of the third connecting part 431 and the third plugging part 432 is located on the power board 12, and the other is located on the drive board 11. The power board 12 is electrically connected to the drive board 11 through the third connector 43. In this way, the drive board 11 and the power board 12 can be plugged in through the third connector 43 without additional wiring, thereby reducing cumbersome wiring, facilitating quick plugging and unplugging, simplifying assembly and maintenance, and thus improving production efficiency.

[0059] In some embodiments, the third plug-in portion 432 is disposed on the power board 12, the third connection portion 431 is disposed on the drive board 11, the drive board 11 is provided with a drive circuit that can be electrically connected to the third connection portion 431, and the power board 12 is provided with a power circuit that is electrically connected to the third plug-in portion 432; of course, the third plug-in portion 432 can also be disposed on the drive board 11, and the third connection portion 431 can also be disposed on the power board 12.

[0060] In some embodiments, the connecting portions of the third plug-in portion 432 and the third connecting portion 431 are made of metal to facilitate electrical connection. For details regarding the specific structure of the third plug-in portion 432 and the third connecting portion 431, please refer to different embodiments of the first plug-in portion 412 and the first connecting portion 411, which will not be repeated here.

[0061] like Figure 7 and Figure 8 As shown, in some embodiments, the electric hydraulic pump 100 further includes a position sensor 32, which is connected to the end of the motor shaft away from the pump assembly and electrically connected to the control board 21. Thus, the position sensor 32 can detect the rotation of the motor, thereby obtaining the rotational speed of the motor body. The position sensor 32 includes a position sensing circuit board and a position detection body connected to the position sensing circuit board. The position sensing circuit board is electrically connected to the control circuit of the control board 21. The position detection body transmits the detection signal to the position sensing circuit board, which then transmits the signal to the control board 21 for processing by the control circuit. Of course, in some embodiments, the position sensing circuit board and the control board 21 can also be functionally integrated; in this case, the position detection body will be directly connected to the control board 21.

[0062] like Figure 7 As shown, in some embodiments, the electric hydraulic pump 100 further includes a fourth connector 44, which includes a fourth connecting portion 441 and a fourth plug-in portion 442 that are mutually inserted. One of the fourth connecting portion 441 and the fourth plug-in portion 442 is disposed on the position sensor 32, and the other is disposed on the control board 21. The position sensor 32 is electrically connected to the control board 21 through the fourth connector 44. In this way, the position sensor 32 can be assembled with the control board 21 more quickly, which helps to improve the assembly efficiency between the two and reduce wiring interference.

[0063] In some embodiments, the fourth plug-in portion 442 is disposed on the control board 21, the fourth connection portion 441 is disposed on the position sensor 32, the position sensing circuit board of the position sensor 32 is electrically connected to the fourth connection portion 441, and the control circuit of the control board 21 is electrically connected to the fourth plug-in portion 442; of course, the fourth plug-in portion 442 may also be disposed on the position sensor 32, and the fourth connection portion 441 may also be disposed on the control board 21.

[0064] In some embodiments, the connecting portions of the fourth plug-in portion 442 and the fourth connecting portion 441 are made of metal to facilitate electrical connection. For details regarding the specific structure of the fourth plug-in portion 442 and the fourth connecting portion 441, please refer to different embodiments of the first plug-in portion 412 and the first connecting portion 411, which will not be repeated here.

[0065] like Figure 4 , Figure 7 and Figure 8 As shown, in some embodiments, the hydraulic electric pump assembly further includes a signal connector 62, which is electrically connected to the control board 21. The signal connector 62 is capable of transmitting low-voltage, low-current signals to the control board 21.

[0066] like Figure 4 As shown, in some embodiments, the electric hydraulic pump 100 further includes a fifth connector 45, which includes a fifth connecting portion 451 and a fifth plug-in portion 452 that are mutually inserted. One of the fifth connecting portion 451 and the fifth plug-in portion 452 is located on the signal connector 62, and the other is located on the control board 21. The signal connector 62 is electrically connected to the control board 21 through the fifth connector 45. In this way, the signal connector 62 can be assembled with the control board 21 more quickly, which helps to improve the assembly efficiency between the two and reduce wiring interference.

[0067] In some embodiments, the fifth plug-in portion 452 is disposed on the control board 21, the fifth connection portion 451 is disposed on the signal connector 62, the signal connector 62 is provided with a signal circuit board that can be electrically connected to the fifth connection portion 451, and the control circuit of the control board 21 is electrically connected to the fifth plug-in portion 452; of course, the fifth plug-in portion 452 can also be disposed on the signal connector 62, and the fifth connection portion 451 can also be disposed on the control board 21.

[0068] In some embodiments, the connecting portions of the fifth plug-in portion 452 and the fifth connecting portion 451 are made of metal to facilitate electrical connection. For details regarding the specific structure of the fifth plug-in portion 452 and the fifth connecting portion 451, please refer to different embodiments of the first plug-in portion 412 and the first connecting portion 411, which will not be repeated here.

[0069] It is precisely the multi-connection configuration of the first connector 41, the second connector 42, the third connector 43, the fourth connector 44, and the fifth connector 45 that, while facilitating connection, improves overall assembly efficiency, significantly reduces internal wiring, avoids interference caused by wiring, and makes the connection safer and more reliable.

[0070] like Figure 4 and Figure 8As shown, in a further embodiment, the electric hydraulic pump 100 also includes a housing assembly 50, which includes a motor housing 51 and an upper cover 52 connected to the motor housing 51. The motor housing 51 has a motor cavity 501 and a control cavity 502 spaced apart, and a drive cavity 503 is provided between the motor housing 51 and the upper cover 52. A motor is installed in the motor cavity 501, a control module 20 is installed in the control cavity 502, and a drive module 10 is installed in the drive cavity 503. The drive board 11 and power board 12 in the drive module 10 are respectively connected to the upper cover 52. At the same time, a signal connector 62 is also passed through the upper cover 52 and connected to the control board 21. With this configuration, the housing assembly 50 is divided into three cavities to accommodate the motor, the control module 20, and the drive module 10 respectively, thereby achieving structural protection. The motor housing 51 can fix the motor, and the upper cover 52 can fix the positions of the drive board 11 and the power board 12.

[0071] In some embodiments, the drive board 11 and the power board 12 are respectively connected to the upper cover 52 by screws, making disassembly and assembly convenient.

[0072] like Figure 8 As shown, in some embodiments, along the axial direction of the motor shaft, a motor, a pump assembly connected to the motor, a drive module 10 connected to the motor, and a corresponding pressure sensor 31 are respectively provided on both sides of the control module 20. Each motor and pressure sensor 31 is connected to its corresponding drive module 10, and together they are connected to the control module 20 through the drive module 10. In this way, the electric hydraulic pump 100 can achieve bidirectional oil supply, and the motors located on both sides of the control module 20 can share a control board 21 for control. At the same time, the pressure sensors 31 located on both sides of the control module 20 can also be connected to a control board 21 through the drive board 11, reducing the number of parts, saving space, and reducing costs.

[0073] This application also provides an active hydraulic suspension, including a shock absorber and the aforementioned electro-hydraulic pump 100. The pump assembly of the electro-hydraulic pump 100 is in fluid communication with the shock absorber to input oil into the shock absorber for vibration damping. The electro-hydraulic pump 100 provides active vibration damping control for the shock absorber, improving the vibration damping effect of the active hydraulic suspension. The active hydraulic suspension also includes a suspension body, to which both the aforementioned electro-hydraulic pump 100 and the shock absorber are connected.

[0074] This application also provides a vehicle including the aforementioned active hydraulic suspension to achieve vibration reduction on bumpy roads. Specifically, the vehicle wheels are connected to the active hydraulic suspension via wheel hubs, and the active hydraulic suspension is connected to the vehicle body to support the wheels and body, thereby cooperating with other structures to control the wheel trajectory. The active hydraulic suspension can reduce the impact transmitted to the wheels due to road bumps during vehicle operation, thereby improving the vehicle's stability and comfort while driving.

[0075] The technical features of the above embodiments can be combined in any way. For the sake of brevity, not all possible combinations of the technical features in the above embodiments are described. However, as long as there is no contradiction in the combination of these technical features, they should be considered to be within the scope of this specification.

[0076] The embodiments described above are merely illustrative of several implementation methods of this application, and while the descriptions are relatively specific and detailed, they should not be construed as limiting the scope of the patent application. It should be noted that those skilled in the art can make various modifications and improvements without departing from the concept of this application, and these all fall within the scope of protection of this application. Therefore, the patent protection scope of this application should be determined by the appended claims.

Claims

1. An electric hydraulic pump, characterized in that, include: Pump assembly; The motor is provided with a motor shaft and is connected to the pump assembly via the motor shaft; A drive module is located on the outer periphery of the motor and is electrically connected to the motor; A control module is disposed along the axial direction of the motor shaft at the end of the motor opposite to the pump assembly; The control module is electrically connected to the drive module; A pressure sensor is provided on the motor or the pump assembly for detecting fluid pressure. The pressure sensor is electrically connected to the drive module and is electrically connected to the control module through the drive module.

2. The electric hydraulic pump according to claim 1, characterized in that, The electric hydraulic pump also includes a first connector, through which the pressure sensor is electrically connected to the drive module.

3. The electric hydraulic pump according to claim 2, characterized in that, The first connector includes a first connecting part and a first plug-in part that are mutually plugged into each other. One of the first connecting part and the first plug-in part is located in the pressure sensor, and the other is located in the drive module.

4. The electric hydraulic pump according to claim 1, characterized in that, The drive module includes a drive board, and the pressure sensor is electrically connected to the drive board; The control module includes a control board, which is electrically connected to the drive board.

5. The electric hydraulic pump according to claim 4, characterized in that, The electric hydraulic pump also includes a second connector, through which the control board is electrically connected to the drive board; The second connector includes a second connecting part and a second plug-in part that are mutually plugged into each other. One of the second connecting part and the second plug-in part is located on the drive board, and the other is located on the control board.

6. The electric hydraulic pump according to claim 4, characterized in that, The drive module further includes a power board; the power board and the drive board are arranged at intervals along the radial direction of the motor axis, and the drive board is located on the side of the power board facing the motor; The electric hydraulic pump also includes a third connector, which includes a third connecting part and a third plug-in part that are mutually plugged in. One of the third connecting part and the third plug-in part is located on the power board, and the other is located on the drive board. The power board is electrically connected to the drive board through the third connector.

7. The electric hydraulic pump according to claim 4, characterized in that, The electric hydraulic pump also includes a position sensor, which is connected to one end of the motor shaft away from the pump assembly and is electrically connected to the control board.

8. The electric hydraulic pump according to claim 7, characterized in that, The electric hydraulic pump also includes a fourth connector, which includes a fourth connecting part and a fourth plug-in part that are mutually plugged in. One of the fourth connecting part and the fourth plug-in part is located on the position sensor, and the other is located on the control board. The position sensor is electrically connected to the control board through the fourth connector.

9. The electric hydraulic pump according to claim 4, characterized in that, The electric hydraulic pump also includes a signal connector, which is electrically connected to the control board.

10. The electric hydraulic pump according to claim 9, characterized in that, The electric hydraulic pump also includes a fifth connector, which includes a fifth connecting part and a fifth plug-in part that are mutually plugged in. One of the fifth connecting part and the fifth plug-in part is located on the signal connector, and the other is located on the control board. The signal connector is electrically connected to the control board through the fifth connector.

11. The electric hydraulic pump according to claim 1, characterized in that, Along the axial direction of the motor shaft, the control module has a motor, a pump assembly connected to the motor, a drive module connected to the motor, and a pressure sensor on each side; Each of the motors and the pressure sensors is connected to its corresponding drive module, and together they are connected to the control module through the drive module.

12. An active hydraulic suspension, characterized in that, include: Vibration damper; The electro-hydraulic pump according to any one of claims 1 to 11, wherein the pump assembly of the electro-hydraulic pump is in fluid communication with the shock absorber.

13. A car, characterized in that, The vehicle includes the active hydraulic suspension as described in claim 12.

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