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 first shell, a first cover body, a second shell, a second cover body, a first motor, a second motor and a circuit board assembly, the first cover body is connected with the first shell, and a first containing cavity is defined by the first cover body and the first shell; the second shell is connected with the first shell; the second cover body is connected with the second shell, and the second cover body and the second shell are enclosed to form a second accommodating cavity; the first motor is arranged in the first accommodating cavity; the second motor is arranged in the second accommodating cavity; the circuit board assembly is arranged in the first containing cavity and the second containing cavity and electrically connected with the first motor and the second motor. The motor cover has the advantages that one of the first cover body and the second cover body can be independently opened, so that the motor arranged in the first accommodating cavity or the second accommodating cavity can be independently maintained, the motor on the other side is exposed, and maintenance and interference risks are avoided.

Description

Technical Field

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

[0002] An electro-hydraulic pump, as a device that actively provides hydraulic energy to shock absorbers, along with shock absorbers and solenoid valves, constitutes the three key components of an active hydraulic suspension system. Each wheel requires an independent electro-hydraulic pump.

[0003] To improve work efficiency, some electric hydraulic pumps are designed with a dual-motor pump set structure. However, since the dual-motor pump set includes two motors, when one of the motors needs maintenance, the entire cover plate needs to be opened, exposing both motors. This can easily lead to interference problems, making maintenance inconvenient and risky. Utility Model Content

[0004] In view of the above-mentioned technical problems, this utility model provides a solution, particularly an electric hydraulic pump, an active hydraulic suspension, and an automobile.

[0005] An electric hydraulic pump includes: a first housing; a first cover connected to the first housing, the first cover and the first housing forming a first receiving cavity; a second housing connected to the first housing; a second cover connected to the second housing, the second cover and the second housing forming a second receiving cavity; a first motor disposed within the first receiving cavity; a second motor disposed within the second receiving cavity; and a circuit board assembly disposed in the first receiving cavity and / or the second receiving cavity, the circuit board assembly being electrically connected to the first motor and the second motor respectively.

[0006] In this configuration, the first cover and the first housing enclose a first receiving cavity, providing space for the installation of the first motor and protecting it from external environmental influences. Similarly, the second cover and the second housing enclose a second receiving cavity, providing space for the installation of the second motor and protecting it from external environmental influences. The first and second covers are separate components, and either one can be opened independently, allowing for individual maintenance of the motor located within either the first or second receiving cavity. When maintaining a motor on one side, it is not necessary to open the cover on the other side, avoiding exposure of the circuit board on that side and preventing maintenance and interference risks.

[0007] In one embodiment, the circuit board assembly includes a first drive module; the first receiving cavity includes a first motor cavity and a first drive cavity that are connected to each other, the first motor is disposed in the first motor cavity, and the first drive module is disposed in the first drive cavity.

[0008] This configuration facilitates the installation of the first motor and the first drive module.

[0009] In one embodiment, the circuit board assembly includes a second drive module; the second receiving cavity includes a second motor cavity and a second drive cavity that are connected to each other, the second drive cavity is also connected to the first drive cavity, the second motor is disposed in the second motor cavity, and the second drive module is disposed in the second drive cavity.

[0010] This configuration facilitates the installation of the second motor and the second drive module.

[0011] In one embodiment, the first drive cavity is disposed on one side of the first motor cavity along the radial direction of the first motor; and / or, the second drive cavity is disposed on one side of the second motor cavity along the radial direction of the second motor; and / or, the first motor cavity is disposed on one side of the second motor cavity along the axial direction of the first motor; and / or, the first drive cavity is disposed on one side of the second drive cavity along the axial direction of the first motor.

[0012] This configuration allows at least a portion of the circuit board assembly to be positioned radially to the first and second motors, thereby reducing the space occupied by the circuit board assembly in the axial direction of the electric hydraulic pump and thus shortening the overall axial length of the electric hydraulic pump.

[0013] In one embodiment, the first drive module includes a first drive board and a first capacitor board that are electrically connected, the first drive board being connected to the first housing and the first capacitor board being connected to the first cover.

[0014] With this setup, the first capacitor board is used to connect to the input power supply, and the first driver board performs drive control.

[0015] In one embodiment, the first cover includes a first protrusion, and the first protrusion has a first capacitor cavity communicating with the first driving cavity on the side facing the first housing, and the first capacitor plate is at least partially disposed in the first capacitor cavity.

[0016] This configuration increases the space available for the first drive cavity.

[0017] In one embodiment, the first protrusion includes a first part and a second part. Along a direction away from the first housing, the height of the first part is greater than the height of the second part. The first part and the second part are connected to form a stepped structure. The first capacitor cavity is provided on the side of the first part and / or the second part facing the first housing.

[0018] This design facilitates the installation of external components while still increasing the internal space of the second drive chamber.

[0019] In one embodiment, the circuit board assembly includes a control board electrically connected to the first drive module; a control cavity is provided between the first receiving cavity and the second receiving cavity, and the control board is disposed in the control cavity.

[0020] With this setup, the control board area can be made larger, making it easier to connect to external components and allowing for closer proximity.

[0021] In one embodiment, the first housing includes a first base shell and a first extension connected together, the first extension being disposed at one end of the first base shell facing the second housing;

[0022] The first base shell is connected to the first cover body, and the first base shell and the first cover body enclose and form the first receiving cavity;

[0023] Along the direction from the first base shell toward the first cover, the first extension protrudes from the first base shell, and the control cavity is provided in the first extension.

[0024] With this configuration, the signal connector can be inserted and mated with the control board along the axial direction.

[0025] In one embodiment, the second housing includes a second base shell and a second extension connected together, the second extension being disposed at one end of the second base shell facing the first housing;

[0026] The second base shell is connected to the second cover, and the second base shell and the second cover together form the second receiving cavity;

[0027] Along the direction from the second base shell toward the second cover, the second extension protrudes from the second base shell, the second extension is connected to the first extension, and the control cavity is provided in both the second extension and the first extension.

[0028] In one embodiment, the first cover has a first mounting hole communicating with the first receiving cavity, and the input power supply passes through the first mounting hole and is electrically connected to the first drive module; and / or

[0029] The electric hydraulic pump also includes a signal connector. The second extension has a second mounting hole communicating with the control cavity. The signal connector passes through the second mounting hole and is electrically connected to the control board. This improves the installation stability of the input power supply and the signal connector.

[0030] In one embodiment, the system further includes an input power source disposed in the first housing and electrically connected to the circuit board assembly; and / or includes a signal connector disposed in the first housing and connected to the circuit board assembly.

[0031] This utility model also provides a hydraulic suspension, including: a shock absorber, and an electric hydraulic pump as described above, wherein the electric hydraulic pump is connected to the shock absorber.

[0032] This utility model also provides an automobile, including: a shock absorber, and an electric hydraulic pump as described above, wherein the electric hydraulic pump is connected to the shock absorber.

[0033] Compared with the prior art, the electric hydraulic pump provided by this utility model separates the first cover and the second cover, and one of the first cover and the second cover can be opened independently, so as to perform individual maintenance on the motor installed in the first receiving cavity or the second receiving cavity. When maintaining the motor on one side, it is not necessary to open the cover on the other side, thus avoiding exposure of the motor on the other side and avoiding maintenance and interference risks. Attached Figure Description

[0034] Figure 1 An exploded view of one embodiment of the electric hydraulic pump provided by this utility model;

[0035] Figure 2 An exploded view of another embodiment of the electric hydraulic pump provided by this utility model;

[0036] Figure 3 An exploded view of a portion of the structure of one embodiment of the electric hydraulic pump provided by this utility model;

[0037] Figure 4 An exploded view of a portion of the structure of one embodiment of the electric hydraulic pump provided by this utility model, wherein the second drive plate is installed in place;

[0038] Figure 5 A structural cross-sectional view of one embodiment of the electric hydraulic pump provided by this utility model;

[0039] Figure 6 This is a partial structural schematic diagram of one embodiment of the electric hydraulic pump provided by this utility model.

[0040] The symbols in the diagram represent the following meanings:

[0041] 100. Electric hydraulic pump; 10. First housing; 11. First receiving cavity; 111. First motor cavity; 112. First drive cavity; 12. First motor; 13. End plate; 131. Enclosure platform; 132. Connecting arm; 14. Control cavity; 15. First base shell; 20. First cover; 21. First protrusion; 211. First part; 212. Second part; 22. Connecting seat; 221. First mounting hole; 23. First extension; 30. Second housing; 31. Second receiving cavity; 311. Second motor cavity; 312. Second drive cavity; 32. Second motor; 33. Second base shell; 40. Second cover; 41. Second protrusion; 42. Avoidance 43. Accommodation area; 44. Second extension; 441. Mating groove; 442. Second mounting hole; 50. Circuit board assembly; 51. First drive module; 511. First drive board; 5111. First connector; 512. First capacitor board; 52. Second drive module; 521. Second drive board; 522. Second capacitor board; 53. Control board; 531. First connector; 532. Second connector; 533. Second connector; 54. Sensor circuit board; 60. Input power supply; 61. Signal connector; 62. Motor sensor; 70. Pump assembly; 80. Temperature sensor; 81. Temperature signal line; 90. Sensor bracket. Detailed Implementation

[0042] 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.

[0043] It should be noted that when a mechanism is referred to as being "fixed to" or "set on" another mechanism, it can be directly on the other mechanism or there may be an intervening mechanism. When a mechanism is considered to be "connected to" another mechanism, it can be directly connected to the other mechanism or there may be an intervening mechanism. 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.

[0044] 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.

[0045] 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.

[0046] 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.

[0047] In response to this, the present invention provides an electric hydraulic pump 100, including a first cover 20 and a second cover 40. The first cover 20 and the second cover 40 can be opened separately, so that when maintaining a motor on one side, it is not necessary to open the cover on the other side, so as to avoid exposing the motor on the other side, causing maintenance risks and interference problems.

[0048] Please see Figures 1-6 The electric hydraulic pump 100 includes a first housing 10, a first cover 20, a second housing 30, a second cover 40, a first motor 12, a second motor 32, and a circuit board assembly 50. The first cover 20 is connected to the first housing 10, and the first cover 20 and the first housing 10 together form a first receiving cavity 11. The second housing 30 is connected to the first housing 10. The second cover 40 is connected to the second housing 30, and the second cover 40 and the second housing 30 together form a second receiving cavity 31. The first motor 12 is disposed in the first receiving cavity 11. The second motor 32 is disposed in the second receiving cavity 31. The circuit board assembly 50 is disposed in the first receiving cavity 11 and the second receiving cavity 31, and the circuit board assembly 50 is electrically connected to the first motor 12 and the second motor 32, respectively.

[0049] Thus, the first cover 20 and the first housing 10 enclose a first receiving cavity 11, which provides space for the installation of the first motor 12 and protects it from external environmental influences. The second cover 40 and the second housing 30 enclose a second receiving cavity 31, which provides space for the installation of the second motor 32 and protects it from external environmental influences. The first cover 20 and the second cover 40 are separate, and one of them can be opened independently, allowing for individual maintenance of the motor located in the first receiving cavity 11 or the second receiving cavity 31. When maintaining a motor on one side, it is not necessary to open the cover on the other side, avoiding exposure of the motor on the other side and preventing maintenance and interference risks.

[0050] The electric hydraulic pump 100 includes two pump assemblies 70. Both the first motor 12 and the second motor 32 have motor shafts, and the two pump assemblies 70 are located at opposite ends of the first motor 12 and the second motor 32. Each electric pump assembly can correspond to one vibration damper.

[0051] The circuit board assembly 50 includes a first drive module 51, and the first receiving cavity 11 includes a first motor cavity 111 and a first drive cavity 112 that are connected to each other. The first motor 12 is disposed in the first motor cavity 111, and the first drive module 51 is disposed in the first drive cavity 112. In this way, the first motor 12 and the first drive module 51 are isolated, preventing the first motor 12 and the first drive module 51 from interfering with or affecting each other during operation.

[0052] Similarly, the circuit board assembly 50 includes a second drive module 52; the second receiving cavity 31 includes a second motor cavity 311 and a second drive cavity 312 that are connected to each other. The second drive cavity 312 is also connected to the first drive cavity 112. The second motor 32 is disposed in the second motor cavity 311, and the second drive module 52 is disposed in the second drive cavity 312. In this way, the second motor 32 and the second drive module 52 are isolated, preventing the second motor 32 and the second drive module 52 from interfering with or affecting each other during operation.

[0053] In related technologies, the electric hydraulic pump 100 mainly consists of a hydraulic pump, a motor, and a motor controller, all arranged axially along the motor shaft. The motor controller needs to integrate numerous circuit components to control the motor's operation. Taking a capacitor as an example, since the capacitor primarily generates a rotating magnetic field by providing an additional phase difference, ensuring smooth motor startup and stable operation; and also serves for short-term energy storage and buffering, the capacitor is typically large to meet the high capacity, high power, and high voltage requirements of the motor during startup and operation. This results in the capacitor requiring significant assembly space. If the motor controller is installed at the end of the motor, the axial dimension of the electric hydraulic pump 100 along the motor shaft will increase significantly, hindering assembly. Furthermore, this large overall axial dimension makes it difficult to integrate other structures along the axial direction of the electric hydraulic pump 100, reducing space utilization.

[0054] To address this, in this embodiment, along the radial direction of the first motor 12, the first drive cavity 112 is disposed on one side of the first motor cavity 111; and / or, along the radial direction of the second motor 32, the second drive cavity 312 is disposed on one side of the second motor cavity 311; and / or, along the axial direction of the first motor 12, the first motor cavity 111 is disposed on one side of the second motor cavity 311; and / or, along the axial direction of the first motor 12, the first drive cavity 112 is disposed on one side of the second drive cavity 312. Thus, since the first drive module 51 is disposed in the first drive cavity 112 and the second drive module 52 is disposed in the second drive cavity 312, and since the first drive cavity 112 and the second drive cavity 312 are located radially outside the first motor cavity 111 and the second motor cavity 311, the first drive module 51 and the second drive module 52 do not occupy axial space of the electric hydraulic pump 100, thereby shortening the axial length of the electric hydraulic pump 100.

[0055] In some embodiments, the first drive module 51 includes a first drive board 511 and a first capacitor board 512 electrically connected. The first drive board 511 is connected to the first housing 10, and the first capacitor board 512 is connected to the first cover 20. Thus, when the first cover 20 is opened, the first capacitor board 512 and the first drive board 511 can be maintained. Similarly, the second drive module 52 includes a second drive board 521 and a second capacitor board 522 electrically connected. The second drive board 521 is connected to the second housing 30, and the second capacitor board 522 is connected to the second cover 40, thereby facilitating maintenance of the second capacitor board 522 and the second drive board 521.

[0056] In some embodiments, along the radial direction of the motor axis, the first capacitor plate 512 and the second capacitor plate 522 are respectively located on the side of the first drive plate 511 and the second drive plate 521 away from the motor axis. That is, the drive circuits of the first drive plate 511 and the second drive plate 521 are arranged close to the motor assembly. Since the drive circuit needs to be electrically connected to the motor assembly, their close arrangement can reduce the distance for achieving the electrical connection. Especially when using ribbon cables to meet the electrical connection between the two, the length of the ribbon cables can be reduced, which not only facilitates wiring but also reduces the risk of messy wiring. At the same time, the power supply circuits on the first capacitor plate 512 and the second capacitor plate 522 can be arranged away from the motor assembly. Since the power supply circuit needs to be connected to an external power source to ensure power supply, it is arranged on the side away from the motor assembly to provide sufficient external space; and since some electronic components in the power supply circuit are relatively large, this arrangement ensures that these electronic components do not occupy too much assembly space for mounting the motor assembly.

[0057] Understandably, the capacitors on the first capacitor plate 512 and the second capacitor plate 522 primarily generate a rotating magnetic field by providing an additional phase difference, ensuring smooth start-up and stable operation of the motor. Furthermore, the capacitors can also be used for short-term energy storage and buffering. Therefore, the size of the capacitors is typically set relatively large to meet the high capacity, high power, and high voltage requirements of the motor during startup and operation. This results in the capacitors requiring a large assembly space during assembly. Therefore, in this embodiment, the capacitors are positioned on the side of the first capacitor plate 512 away from the first drive plate 511 (i.e., the side opposite to the motor assembly), and on the side of the second capacitor plate 522 away from the second drive plate 521, reducing the assembly space occupied by the motor assembly.

[0058] The first cover 20 includes a first protrusion 21, which protrudes in a direction away from the first housing 10. A first capacitor cavity, communicating with the first driving cavity 112, is provided on the side of the first protrusion 21 facing the first housing 10. At least partially, the first capacitor plate 512 is disposed within the first capacitor cavity. The first capacitor cavity provides space for the first capacitor plate 512 to be installed, resulting in a simple structure and low processing cost.

[0059] In some embodiments, the second cover 40 is further provided with a second protrusion 41, which protrudes in a direction away from the second housing 30, and a second capacitor cavity communicating with the second drive cavity 312 is formed on the side of the second protrusion 41 facing the second housing 30. The first protrusion 21 and the second protrusion 41 expand the accommodating space of the first drive cavity 112 and the second drive cavity 312, which facilitates the installation and maintenance of the first capacitor plate 512 and the second capacitor plate 522, and increases the number and volume of electronic components that can be arranged in the radial direction of the first motor 12 and the second motor 32, so as to further shorten the axial length of the electric hydraulic pump 100.

[0060] The first protrusion 21 includes a first part 211 and a second part 212. Along the direction away from the first housing 10, the height of the first part 211 is greater than the height of the second part 212. The first part 211 and the second part 212 are connected to form a stepped structure. The first part 211 internally houses electronic components on the first capacitor plate 512. The first part 211 and the second part 212 together house the substrate of the first capacitor plate 512. The first part 211 and the second part 212 are adapted to the shape of the first capacitor plate 512, which can reduce the overall size of the electric hydraulic pump. It is understood that in some other embodiments, the first protrusion 21 may only include the first part 211 or only the second part 212; that is, the first protrusion 21 may not be provided as a stepped structure, as long as it meets the installation requirements of the first capacitor plate 512.

[0061] In this embodiment, an input power supply 60 is provided on the outer side of the second part 212, and the input power supply 60 passes through the second part 212 and is electrically connected to the first capacitor plate 512. It is understood that in some other embodiments, the input power supply 60 may also pass through the first part 211 and be connected to the first capacitor plate 512, which is not limited here.

[0062] In some embodiments, the first capacitor cavity is provided on the side of the first part 211 and / or the second part 212 facing the first housing 10. That is, the first capacitor cavity may be formed only in the first part 211 or the second part 212, or it may be formed by the first part 211 and the second part 212 together. The first capacitor cavity can be set according to the size and arrangement position of the capacitor elements on the first capacitor plate.

[0063] Understandably, in other embodiments, the input power supply 60 may also be replaced with other electronic component structures, depending on the operational requirements and working environment.

[0064] In some embodiments, a connector 22 is provided on the second part 212. The connector 22 has a first mounting hole 221. The input power supply 60 is connected to the connector 22 and passes through the first mounting hole 221. The input power supply 60 is electrically connected to the first capacitor plate 512 of the circuit board assembly 50. The connector 22 is used for the installation and fixation of the input power supply 60, thereby improving its operational stability.

[0065] The circuit board assembly 50 includes a control board 53, which is electrically connected to the first drive module 51. A control cavity 14 is provided between the first receiving cavity 11 and the second receiving cavity 31, and the control board 53 is disposed in the control cavity 14. Thus, the control cavity 14 provides mounting space for the control board 53, and the control board 53 is located between the first motor 12 and the second motor 32, which facilitates electrical connection between the two and transmission of electrical signals.

[0066] In this embodiment, the control board 53, the first drive module 51, and the second drive module 52 constitute the motor control assembly. The control board 53 is mainly responsible for processing input signals, executing control algorithms, and outputting control commands, while the first drive module 51 and the second drive module 52 are mainly used to drive the motor to operate.

[0067] In the electric pump provided in this application, the drive module and control board 53 are separately arranged, which reduces the axial space occupied by the circuit board assembly 50, thereby reducing the axial dimension of the entire electric hydraulic pump. Simultaneously, because the drive module and control board 53 are located in different positions, they are structurally separated, increasing the distance between the high-voltage electronic components in the drive module and the low-voltage electronic components in the control board 53, thereby reducing interference from the high-voltage electronic components to the low-voltage electronic components. The drive module includes a first drive module 51 and a second drive module 52, and the axial direction refers to the axial direction of the first motor 12 and the second motor 32.

[0068] In some embodiments, the first housing 10 includes a first base shell 15 and a first extension 23 connected together. The first extension 23 is disposed at one end of the first base shell 15 facing the second housing 30. The first base shell 15 is connected to a first cover 20, and the first base shell 15 and the first cover 20 enclose each other to form a first receiving cavity 11. The first extension 23 protrudes from the first base shell 15 in the direction from the first base shell 15 to the first cover 20. The second housing 30 includes a second base shell 33 and a second extension 44 connected together. The second extension 44 is disposed at one end of the second base shell 33 facing the first housing 10. The second base shell 33 is connected to a second cover 40, and the second base shell 33 and the second cover 40 enclose each other to form a second receiving cavity 31. The second extension 44 protrudes from the second base shell 33 in the direction from the second base shell 33 to the second cover 40. The second extension 44 is connected to the first extension 23, and a control cavity 14 is provided inside the second extension 44 and the first extension 23. Thus, the first extension 23 and the second extension 44 increase the space in the radial direction of the electric hydraulic pump 100, so the area of ​​the control plate 53 can be set to be larger.

[0069] It is understood that in some other embodiments, only the first extension 23 or only the second extension 44 may be provided. That is, the control cavity 14 may be provided only in the first extension 23 or only in the second extension 44. The specific location of the control cavity 14 may be set according to actual needs and is not limited here.

[0070] In this embodiment, the first extension 23 and the second extension 44 protrude toward the first direction X, respectively, away from their corresponding first receiving cavity 11 and second receiving cavity 31. Therefore, the control plate 53 can also extend upward into the first extension 23 and the second extension 44.

[0071] It should be explained that, in this embodiment, please refer to... Figure 1 The first direction X refers to the vertical direction from bottom to top when the electric hydraulic pump 100 is installed in the position and state shown in the figure. Understandably, when the electric cylinder hydraulic pump is not placed or installed horizontally at the angle shown in the figure, but is installed vertically or at an angle, the first direction X should also be changed accordingly.

[0072] In some embodiments, the aforementioned first drive board 511 and second drive board 521 are electrically connected to the control board 53 via a first connector. The control board 53 is provided with a first connector, which includes a first plug 531 and a first plug socket 5111 capable of mutual insertion and mating. One of the first plug 531 and the first plug socket 5111 is located on the first drive board 511 and the second drive board 521, and the other is located on the control board 53, thereby electrically connecting the control board 53 to the first drive board 511 and the second drive board 521. In other words, the quick-connection method of the first plug 531 and the first plug socket 5111 satisfies the electrical signal transmission between the first drive board 511, the second drive board 521, and the control board 53, making operation faster and more convenient, and facilitating quick disassembly and subsequent maintenance. Furthermore, this method eliminates wiring, resulting in a simple overall structure. The first plug 531 and the first plug socket 5111 can be connected and mated using inserts, pins, blades, or other flexible insertion methods. Alternatively, the first drive board 511 and the second drive board 521 are electrically connected to the control board 53 via wires, with the two ends of the wires soldered to the first drive board 511, the second drive board 521, and the control board 53, respectively.

[0073] The electric hydraulic pump 100 also includes a signal connector 61, which passes through the second extension 44 along the axial direction of the second motor 32 and is electrically connected to the control board 53. In this way, the signal connector 61 can be directly connected to the control board 53 along the axial direction, bringing them closer together and making assembly more convenient.

[0074] In some embodiments, the side of the second cover plate facing away from the first receiving cavity 11 includes a receiving area 43 and a clearance area 42. A second protrusion 41 is disposed in the receiving area 43 and expands the mounting space inside the receiving area 43, facilitating the installation of the second capacitor plate 522. The signal connector 61 is disposed in the clearance area 42, so the second protrusion 41 will not interfere with the signal connector 61. The second extension 44 is also adaptively constructed at the end of the clearance area 42, thereby engaging with the signal connector 61.

[0075] In some embodiments, a mating groove 441 is provided on the side of the second extension 44 away from the first extension 23. The shape of the groove wall of the mating groove 441 is adapted to the signal connector 61. After the signal connector 61 is inserted and mated with the control board 53, its outer peripheral wall is engaged with the mating groove 441, thereby improving the installation stability of the signal connector 61.

[0076] In some embodiments, the second extension 44 is provided with a second mounting hole 442 communicating with the control cavity 14, and the signal connector 61 passes through the second mounting hole 442 and is electrically connected to the control board 53.

[0077] In some embodiments, the electric hydraulic pump 100 includes a motor sensor 62, which is mounted on and electrically connected to the control board 53. The motor sensor 62 is connected to a first motor 12 and / or a second motor 32, and is used to detect the motor parameters of the first motor 12 and / or the second motor 32. The motor sensor 62 may be directly connected to the first motor 12 and / or the second motor 32, or it may not be directly connected. The configuration of the motor sensor 62 can be set according to actual needs and is not limited here. The motor parameters may include angle, speed, temperature, oil pressure, etc., and are not limited here.

[0078] In some embodiments, the electric hydraulic pump 100 further includes a sensor circuit board 54, which is disposed between the motor sensor 62 and the control board 53, and is electrically connected to both the motor sensor 62 and the control board 53. The motor sensor 62 transmits signals to the sensor circuit board 54, which then transmits the signals to the control board 53. The control board 53 is also provided with a data acquisition circuit, which is electrically connected to the sensor circuit board 54 and to the main control circuit. The data acquisition circuit acquires the detection signals transmitted by the sensor circuit board 54 and sends them to the main control circuit.

[0079] In some embodiments, the number of motor sensors 62 can be set to two, with one motor sensor 62 connected to the first motor 12 and the control board 53, and the other motor sensor 62 connected to the second motor 32 and the control board 53. The two motor sensors 62 are respectively positioned on opposite sides of the control board 53 along the axial direction of the first motor 12. Correspondingly, the number of sensor circuit boards 54 can be set to two, with each sensor circuit board 54 connected between the control board 53 and a corresponding motor sensor 62. It should be noted that the number of motor sensors 62 and the number of sensor circuit boards 54 can be set according to actual needs and are not limited here.

[0080] In some embodiments, the aforementioned first housing 10 and second housing 30 are provided with an end plate 13 at one end axially away from the pump assembly 70 along the motor shaft, and the sensor circuit board 54 is connected to the end plate 13. The end plate 13 has a mounting position for mounting the sensor circuit board 54, facilitating a secure connection between the sensor circuit board 54 and the end plate 13, thus providing support for the sensor circuit board 54. The sensor circuit board 54 can be fixed to the end plate 13 with screws. The end plate 13 not only provides a mounting base for the sensor circuit board 54 but also helps to separate the motor body from the sensor circuit board 54, protecting the sensor circuit board 54 from interference from other structures and ensuring stable operation. The aforementioned motor body is the first motor 12 and / or the second motor 32.

[0081] In some embodiments, along the axial direction of the first motor 12, the end plate 13 is provided with a retaining platform 131, which surrounds the outer periphery of the second connector. Taking the second plug 532 in the second connector as an example, which is located on the sensor circuit board 54, the retaining platform 131 surrounds the outer periphery of the second plug 532 to protect the second plug 532; and when the second plug 532 and the second plug socket 533 are mated, it is equivalent to the retaining platform 131 surrounding the outer periphery of the second connector, reducing the interference of the second connector from other structures and ensuring the stability of the mating.

[0082] In some embodiments, the enclosure platform 131 has a notch radially along the motor shaft, and the sensor circuit board 54 has a connecting arm 132, which passes through the notch and is fixed to the end plate 13. That is, by using the connecting arm 132 extending out of the notch to connect with the end plate 13, the connection stability of the sensor circuit board 54 relative to the end plate 13 is improved, especially regarding the stability at the second connector position, ensuring that the sensor circuit board 54 will not warp or shake due to the insertion action. In actual use, the second connector 532 is located at a lower position on the sensor circuit board 54, and multiple round holes for screw fixing are also provided at a higher position on the sensor circuit board 54 to ensure a reliable connection between the sensor circuit board 54 and the end plate 13.

[0083] Another option is to see Figure 6The sensor module also includes a temperature sensor 80, which is spaced apart from the motor sensor 62. The temperature sensor 80 is also located at the ends of the first motor 12 and the second motor 32 away from the pump assembly 70 and is electrically connected to the control board 53. The temperature sensor 80 is used to detect the internal temperature of the first motor 12 and the second motor 32 to prevent overheating. In actual use, the first motor 12 and the second motor 32 also include heat dissipation structures. The temperature signal detected by the temperature sensor 80 is transmitted to the acquisition circuit for acquisition, and then transmitted to the main control circuit for processing and analysis. If the detected temperature is greater than the preset value in the main control circuit, the main control circuit sends a command to the drive circuit to control the heat dissipation structure to start for heat dissipation. This is only an example.

[0084] In some embodiments, the temperature sensor 80 has a temperature signal line 81, which is directly electrically connected to the control board 53. It is understood that the temperature sensor 80 includes a detection terminal and a temperature signal line 81 connected to the detection terminal. The temperature signal line 81 can transmit the detection signal from the detection terminal to the main control circuit of the control board 53 for analysis and processing. Using the temperature signal line 81 to directly transmit the signal to the control board 53 reduces interference during transmission.

[0085] In some embodiments, the sensor circuit board 54 is provided with a temperature signal transmission circuit, and the temperature sensor 80 has a temperature signal line 81, which is electrically connected to the control board 53 through the temperature signal transmission circuit. That is, the temperature signal line 81 can be first connected to the sensor circuit board 54, and then the signal is transmitted via the second connector between the sensor circuit board 54 and the control board 53. This arrangement can reduce the length of the temperature signal line 81 and improve the problem of messy wiring. One end of the temperature signal transmission circuit on the sensor circuit board 54 is electrically connected to the temperature signal line 81, and the other end is electrically connected to the second connector 532 in the second connector, to ensure that the detection signal from the temperature sensor 80 can be transmitted to the control board 53 for analysis and processing.

[0086] The temperature signal line 81 can be directly soldered to the corresponding position on the sensor circuit board 54 and the temperature signal transmission circuit. Alternatively, the sensor circuit board 54 is equipped with a signal transmitter with a connector port. The end of the signal transmission line of the temperature sensor 80 is connected to a mating plug, which is then plugged into the connector port. In other words, the signal line of the temperature sensor 80 can also be quickly installed and removed by plugging in the mating plug to the connector port, which is not only convenient to operate but also provides a more stable connection.

[0087] In some embodiments, the electric hydraulic pump 100 further includes a pressure sensor (not shown), which is disposed near the pump assembly 70 and electrically connected to the control board 53. Understandably, the pressure sensor is used to detect the oil pressure of the pump assembly 70 and transmits the detection signal to the control board 53. The main control circuit on the control board 53 analyzes and processes the detection signal and controls the operation of the motor body through the drive circuit on the first circuit board to adjust the power of the pump assembly 70 to increase or decrease its power.

[0088] In this embodiment, the pressure sensor is electrically connected to the control board 53 via a first drive module 51 and a second drive module 52. The first drive module 51 and the second drive module 52 include a first drive board 511 and a second drive board 521 equipped with drive circuits. The first drive board 511 and the second drive board 521 are equipped with pressure signal transmission circuits. The pressure sensor is electrically connected to the first drive board 511 and the second drive board 521, and is also electrically connected to the control board 53 via the pressure signal transmission circuits. That is, the detection signal from the pressure sensor is transmitted to the pressure signal transmission circuit, then via the pressure signal transmission circuit and the first connector to the control board 53, where it is processed and analyzed by the main control circuit.

[0089] In related technologies, since the pressure sensor is used to detect the oil pressure of the pump assembly 70, it needs to be placed close to the pump assembly 70, which results in a large distance between the pressure sensor and the control board 53. If a ribbon cable is used for connection, the cable will be too long and may interfere with other structures; moreover, additional wiring structures are needed to accommodate the cable, increasing manufacturing processes and structural complexity. Therefore, in this embodiment, the first drive board 511 and the second drive board 521 are used as signal relays between the pressure sensor and the control board 53, thus eliminating the need for a long ribbon cable and reducing interference with other structures.

[0090] The pressure sensor includes a pressure detection body and a pressure circuit board connected to the pressure detection body. The pressure circuit board is electrically connected to the first drive module 51 and the second drive module 52, and to the first drive board 511 and the second drive board 521 in the first drive module 51 and the second drive module 52. The pressure circuit board has pressure points adapted to the pressure detection body. The pressure points change under the action of the pressure detection body, thereby causing the pressure circuit board to transmit the detection signal to the first drive board 511 and the second drive board 521, and then to the main control circuit on the control board 53 via the aforementioned first connector.

[0091] In some embodiments, the pressure circuit board is electrically connected to the first drive board 511 and the second drive board 521 via a third connector. The third connector includes a third connector and a third connector socket that mate with each other. One of the third connector and the third connector socket is located on the pressure circuit board, and the other is located on the control board 53, so as to electrically connect the control board 53 and the pressure circuit board. For example, the third connector socket is located on the first drive board 511 and the second drive board 521, and the third connector is located on the pressure circuit board.

[0092] The pressure sensor also includes a sensor bracket 90, on which the aforementioned pressure circuit board is disposed. The sensor bracket 90 is connected to the pump assembly 70. The sensor bracket 90 has a mounting groove, in which at least a portion of the pressure circuit board is disposed and can be secured with screws. Furthermore, the screws can simultaneously connect the mounting positions on the sensor bracket 90, the pressure circuit board, and the pump assembly 70, facilitating assembly. In this case, to improve the reliability of the connection between the pressure circuit board and the sensor bracket 90, the pressure circuit board can be embedded within the mounting groove.

[0093] Meanwhile, the sensor bracket 90 is provided with a wire hole, through which one end of the pressure signal connection wire is passed for electrical connection with the pressure circuit board. The sensor bracket 90 is also provided with a wiring cavity to facilitate the routing of the pressure signal connection wire. The wiring cavity can be a recessed structure in the sensor bracket 90 or a hole structure located inside the sensor bracket 90.

[0094] The sensor bracket 90 has a protruding mounting protrusion, which surrounds an insertion cavity containing a rigid pin. One end of the pressure signal connecting wire, facing away from the pressure detection body, passes through the mounting protrusion along the height direction of the first drive plate 511 and the second drive plate 521, and connects to the rigid pin. At this point, the mounting protrusion and the rigid pin together define the aforementioned third connector. The third connector is a block-shaped structure protruding from the first drive plate 511 and the second drive plate 521 on the side facing the motor shaft, and has a socket. The rigid pin is inserted into the socket to achieve electrical connection.

[0095] Understandably, the mounting protrusion protects the internal rigid pins from bending due to impacts from other structures, ensuring accurate mating with the third connector. At least one pressure signal connection wire is provided, each connected to a corresponding rigid pin, and each rigid pin corresponds to a socket in the third connector. The pressure signal connection wire can be integrally formed with its corresponding rigid pin. The number of pressure signal connection wires can be set according to actual needs, such as one, two, or five, and is not limited here.

[0096] Some embodiments of this application provide an active hydraulic suspension, including a shock absorber and the aforementioned electro-hydraulic pump 100, the electro-hydraulic pump 100 being in fluid communication with the shock absorber. The electro-hydraulic pump 100 provides active damping control for the shock absorber, improving the 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.

[0097] Another embodiment of this application provides a car including the aforementioned active hydraulic suspension. The wheels are connected to the active hydraulic suspension via wheel hubs, and the active hydraulic suspension is connected to the vehicle body to provide support for the wheels and the vehicle body, thereby cooperating with other structures to achieve wheel trajectory control. The active hydraulic suspension can reduce the impact transmitted to the wheels due to road bumps during vehicle operation, thereby improving the stability and comfort of the vehicle while driving.

[0098] Compared with the prior art, the electric hydraulic pump 100 provided by this utility model separates the first cover 20 and the second cover 40. One of the first cover 20 and the second cover 40 can be opened independently, so that the motor installed in the first receiving cavity 11 or the second receiving cavity 31 can be maintained separately. When maintaining the motor on one side, it is not necessary to open the cover on the other side, thus avoiding exposure of the motor on the other side and avoiding maintenance and interference risks.

[0099] 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.

[0100] The embodiments described above are merely illustrative of several implementations of this utility model, and while the descriptions are relatively specific and detailed, they should not be construed as limiting the scope of the utility model patent. It should be noted that those skilled in the art can make various modifications and improvements without departing from the concept of this utility model, and these all fall within the protection scope of this utility model. Therefore, the protection scope of this utility model patent should be determined by the appended claims.

Claims

1. An electric hydraulic pump, characterized in that, include: First shell (10); A first cover (20) is connected to the first housing (10), and the first cover (20) and the first housing (10) together form a first receiving cavity (11); A second housing (30) is connected to the first housing (10); The second cover (40) is connected to the second housing (30), and the second cover (40) and the second housing (30) together form a second receiving cavity (31); The first motor (12) is disposed inside the first receiving cavity (11); The second motor (32) is disposed in the second receiving cavity (31); A circuit board assembly (50) is disposed in the first receiving cavity (11) and / or the second receiving cavity (31), and the circuit board assembly (50) is electrically connected to the first motor (12) and the second motor (32) respectively.

2. The electric hydraulic pump according to claim 1, characterized in that, The circuit board assembly (50) includes a first drive module (51); The first receiving cavity (11) includes a first motor cavity (111) and a first drive cavity (112) that are connected to each other. The first motor (12) is disposed in the first motor cavity (111), and the first drive module (51) is disposed in the first drive cavity (112).

3. The electric hydraulic pump according to claim 2, characterized in that, The circuit board assembly (50) includes a second drive module (52); The second receiving cavity (31) includes a second motor cavity (311) and a second drive cavity (312) that are connected to each other. The second drive cavity (312) is also connected to the first drive cavity (112). The second motor (32) is disposed in the second motor cavity (311), and the second drive module (52) is disposed in the second drive cavity (312).

4. The electric hydraulic pump according to claim 3, characterized in that, Along the radial direction of the first motor (12), the first drive cavity (112) is disposed on one side of the first motor cavity (111); and / or, Along the radial direction of the second motor (32), the second drive cavity (312) is disposed on one side of the second motor cavity (311); and / or, Along the axial direction of the first motor (12), the first motor cavity (111) is disposed on one side of the second motor cavity (311); and / or, Along the axial direction of the first motor (12), the first drive cavity (112) is disposed on one side of the second drive cavity (312).

5. The electric hydraulic pump according to claim 2, characterized in that, The first drive module (51) includes a first drive board (511) and a first capacitor board (512) that are electrically connected. The first drive board (511) is connected to the first housing (10), and the first capacitor board (512) is connected to the first cover (20).

6. The electric hydraulic pump according to claim 5, characterized in that, The first cover (20) includes a first protrusion (21), and the first protrusion (21) has a first capacitor cavity communicating with the first driving cavity (112) on the side facing the first housing (10), and the first capacitor plate (512) is at least partially disposed in the first capacitor cavity.

7. The electric hydraulic pump according to claim 6, characterized in that, The first protrusion (21) includes a first part (211) and a second part (212). Along the direction away from the first housing (10), the height of the first part (211) is greater than the height of the second part (212). The first part (211) and / or the second part (212) are provided with the first capacitor cavity on the side facing the first housing (10).

8. The electric hydraulic pump according to any one of claims 2-7, characterized in that, The circuit board assembly (50) includes a control board (53) which is electrically connected to the first drive module (51); A control cavity (14) is provided between the first receiving cavity (11) and the second receiving cavity (31), and the control plate (53) is disposed in the control cavity (14).

9. The electric hydraulic pump according to claim 8, characterized in that, The first housing (10) includes a first base shell (15) and a first extension (23) connected to each other, the first extension (23) being disposed at one end of the first base shell (15) facing the second housing (30); The first base shell (15) is connected to the first cover (20), and the first base shell (15) and the first cover (20) enclose each other to form the first receiving cavity (11); Along the direction from the first base shell (15) toward the first cover (20), the first extension (23) protrudes from the first base shell (15), and the control cavity (14) is provided in the first extension.

10. The electric hydraulic pump according to claim 9, characterized in that, The second housing (30) includes a second base shell (33) and a second extension (44) connected to each other, the second extension (44) being disposed at one end of the second base shell (33) facing the first housing (10); The second base shell (33) is connected to the second cover (40), and the second base shell (33) and the second cover (40) enclose the second receiving cavity (31); Along the direction of the second base shell (33) toward the second cover (40), the second extension (44) protrudes from the second base shell (33), the second extension (44) is connected to the first extension (23), and the control cavity (14) is provided in the second extension (44) and the first extension (23).

11. The electric hydraulic pump according to claim 10, characterized in that, The electric hydraulic pump further includes an input power supply (60), and the first cover (20) is provided with a first mounting hole (221) communicating with the first receiving cavity (11). The input power supply (60) passes through the first mounting hole (221) and is electrically connected to the first drive module (51); and / or, The electric hydraulic pump also includes a signal connector (61), and the second extension (44) is provided with a second mounting hole (442) communicating with the control cavity (14). The signal connector (61) passes through the second mounting hole (442) and is electrically connected to the control board (53).

12. The electric hydraulic pump according to claim 1, characterized in that, It also includes an input power supply (60) disposed in the first housing (10) and electrically connected to the circuit board assembly (50); and / or It also includes a signal connector (61) disposed in the first housing (10) and connected to the circuit board assembly (50).

13. A hydraulic suspension, characterized in that, include: Vibration damper; The electro-hydraulic pump as described in any one of claims 1-12, wherein the electro-hydraulic pump is connected to the shock absorber.

14. A car, characterized in that, include: Vibration damper; The electro-hydraulic pump as described in any one of claims 1-13, wherein the electro-hydraulic pump is connected to the shock absorber.

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