Electric hydraulic pump, active hydraulic suspension and automobile

Abstract

The invention 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] The present invention relates to the technical field of vehicles, and in particular to an electric hydraulic pump, an active hydraulic suspension and a car. Background Art

[0002] As a device that actively provides hydraulic energy to the shock absorber, the electric hydraulic pump, shock absorber, solenoid valve, etc. constitute the three key components of the active hydraulic suspension system. Each wheel requires an independent electric hydraulic pump.

[0003] In order to improve work efficiency, some electric hydraulic pumps are configured as dual-motor pump groups. However, since the dual-motor pump group includes two motors, when one of the motors needs maintenance, the entire cover needs to be opened, and both motors will be exposed, which can easily lead to interference problems. This not only makes maintenance inconvenient, but also poses maintenance risks. Summary of the invention

[0004] In view of the above technical problems, the present invention provides a kind of electric hydraulic pump, active hydraulic suspension and automobile in particular.

[0005] An electric hydraulic pump comprises: a first shell; a first cover body, the first cover body is connected to the first shell, the first cover body and the first shell together form a first receiving cavity; a second shell, the second shell is connected to the first shell; a second cover body, the second cover body is connected to the second shell, the second cover body and the second shell together form a second receiving cavity; a first motor is arranged in the first receiving cavity; a second motor is arranged in the second receiving cavity; a circuit board assembly is arranged in the first receiving cavity and / or the second receiving cavity, and the circuit board assembly is electrically connected to the first motor and the second motor respectively.

[0006] In this way, the first cover and the first shell are enclosed to form a first receiving cavity, which provides a space for the first motor to be installed therein and protects it from the external environment, and the second cover and the second shell are enclosed to form a second receiving cavity, which provides a space for the second motor to be installed therein and protects it from the external environment. The first cover and the second cover are separately arranged, and one of the first cover and the second cover can be opened separately, so that the motor arranged in the first receiving cavity or the second receiving cavity can be maintained separately. When maintaining the motor on one side, there is no need to open the cover on the other side, which avoids exposing the circuit board on the other side and prevents maintenance and interference risks.

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

[0008] Such an arrangement 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 arranged in the second motor cavity, and the second drive module is arranged in the second drive cavity.

[0010] Such an arrangement facilitates the installation of the second motor and the second drive module.

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

[0012] With such an arrangement, at least a portion of the circuit board assembly can be arranged in the radial direction of the first motor and the second motor, thereby reducing the space occupied by the circuit board assembly in the axial direction of the electric hydraulic pump, thereby shortening the axial length of the entire electric hydraulic pump.

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

[0014] With this arrangement, the first capacitor plate is used to connect to the input power supply, and the first driving plate performs driving control.

[0015] In one embodiment, the first cover includes a first convex portion, a first capacitor cavity communicating with the first driving cavity is provided on a side of the first convex portion facing the first shell, and the first capacitor plate is at least partially disposed in the first capacitor cavity.

[0016] Such an arrangement increases the accommodating space of the first driving cavity.

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

[0018] Such an arrangement not only facilitates the installation of external components, but also increases the internal space of the second driving cavity.

[0019] In one embodiment, the circuit board assembly includes a control board, and the control board is electrically connected to the first driving 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 arrangement, the area of ​​the control panel can be set larger, and the connection with external components is more convenient and closer.

[0021] In one embodiment, the first shell includes a first base shell and a first extension portion connected to each other, and the first extension portion is disposed at one end of the first base shell facing the second shell;

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

[0023] Along the direction from the first base shell to the first cover body, the first extension portion protrudes from the first base shell, and the control cavity is disposed in the first extension portion.

[0024] With such arrangement, the signal connector can be plugged into and matched with the control board along the axial direction.

[0025] In one embodiment, the second shell includes a second base shell and a second extension portion connected to each other, and the second extension portion is disposed at one end of the second base shell facing the first shell;

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

[0027] Along the direction from the second base shell to the second cover body, the second extension portion protrudes from the second base shell, the second extension portion is connected to the first extension portion, and the control cavity is disposed in the second extension portion and the first extension portion.

[0028] In one embodiment, a first mounting hole communicating with the first receiving cavity is provided on the first cover, and the input power source is passed through the first mounting hole and is electrically connected to the first driving module; and / or,

[0029] The electric hydraulic pump further comprises a signal connector, the second extension portion is provided with a second mounting hole communicating with the control chamber, the signal connector is passed through the second mounting hole and is electrically connected to the control board, thus improving the installation stability of the input power supply and the signal connector.

[0030] In one embodiment, it further includes an input power supply, which is disposed in the first shell and electrically connected to the circuit board assembly; and / or it further includes a signal connector, which is disposed in the first shell and connected to the circuit board assembly.

[0031] The present invention further provides a hydraulic suspension, comprising: a shock absorber, and the electric hydraulic pump as described above, wherein the electric hydraulic pump is connected to the shock absorber.

[0032] The present invention also provides an automobile, comprising: a shock absorber, and the 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 the present invention separates the first cover body and the second cover body, and one of the first cover body and the second cover body can be opened separately, so that the motor arranged in the first receiving cavity or the second receiving cavity can be maintained separately. When maintaining the motor on one side, there is no need to open the cover body on the other side, thereby avoiding exposure of the other side and avoiding maintenance and interference risks. BRIEF DESCRIPTION OF THE DRAWINGS

[0034] Figure 1 An exploded view of the structure of one embodiment of the electric hydraulic pump provided by the present invention;

[0035] Figure 2 An exploded view of the structure of one embodiment of the electric hydraulic pump provided by the present invention from another angle;

[0036] Figure 3 An exploded view of a part of the structure of one embodiment of the electric hydraulic pump provided by the present invention;

[0037] Figure 4 An exploded view of a part of the structure of one embodiment of the electric hydraulic pump provided by the present invention, 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 the present invention;

[0039] Figure 6 A partial structural schematic diagram of one embodiment of the electric hydraulic pump provided by the present invention.

[0040] The symbols in the figure mean the following:

[0041] 100, electric hydraulic pump; 10, first housing; 11, first receiving chamber; 111, first motor chamber; 112, first drive chamber; 12, first motor; 13, end plate; 131, enclosure; 132, connecting arm; 14, control chamber; 15, first base shell; 20, first cover; 21, first convex portion; 211, first portion; 212, second portion; 22, connecting seat; 221, first mounting hole; 23, first extension portion; 30, second housing; 31, second receiving chamber; 311, second motor chamber; 312, second drive chamber; 32, second motor; 33, second base shell; 40, second cover; 41, second convex portion; 42, avoid Allowance area; 43, accommodating area; 44, second extension portion; 441, matching groove; 442, second mounting hole; 50, circuit board assembly; 51, first drive module; 511, first drive board; 5111, first socket; 512, first capacitor plate; 52, second drive module; 521, second drive board; 522, second capacitor plate; 53, control board; 531, first plug connector; 532, second plug connector; 533, second socket; 54, sensor circuit board; 60, input power; 61, signal connector; 62, motor sensor; 70, pump assembly; 80, temperature sensor; 81, temperature signal line; 90, sensor bracket. DETAILED DESCRIPTION

[0042] In order to make the above-mentioned purposes, features and advantages of the present application more obvious and easy to understand, the specific implementation methods of the present application are described in detail below in conjunction with the accompanying drawings. In the following description, many specific details are set forth to facilitate a full understanding of the present application. However, the present application can be implemented in many other ways different from those described herein, and those skilled in the art can make similar improvements without violating the connotation of the present application, so the present application is not limited by 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 may be directly on the other mechanism or there may be a central mechanism. When a mechanism is considered to be "connected to" another mechanism, it may be directly connected to the other mechanism or there may be a central mechanism at the same time. The terms "vertical", "horizontal", "upper", "lower", "left", "right" and similar expressions used in the specification of this application are for illustrative purposes only and do not represent the only implementation method.

[0044] In addition, the terms "first" and "second" are used for descriptive purposes only and should not be understood as indicating or implying relative importance or implicitly indicating the number of the indicated technical features. Therefore, the features defined as "first" and "second" may explicitly or implicitly include at least one of the features. In the description of this application, the meaning of "plurality" is at least two, such as two, three, etc., unless otherwise clearly and specifically defined.

[0045] In the present application, unless otherwise clearly specified and limited, a first feature being “above” or “below” a second feature may mean that the first feature is directly in contact with the second feature, or the first feature and the second feature are indirectly in contact through an intermediate medium. Moreover, a first feature being “above”, “above” or “above” a second feature may mean that the first feature is directly above or obliquely above the second feature, or simply means that the first feature is higher in level than the second feature. A first feature being “below”, “below” or “below” a second feature may mean that the first feature is directly below or obliquely below the second feature, or simply means that the first feature is lower in level than the second feature.

[0046] Unless otherwise defined, all technical and scientific terms used in the specification of this application have the same meaning as those commonly understood by those skilled in the art to which this application belongs. The terms used in the specification of this application are only for the purpose of describing specific embodiments and are not intended to limit this application. The term "and / or" used in the specification of this application includes any and all combinations of one or more related listed items.

[0047] To address this issue, the present invention provides an electric hydraulic pump 100, comprising a first cover body 20 and a second cover body 40. The first cover body 20 and the second cover body 40 can be opened separately, so that when maintaining the motor on one side, there is no need to open the cover body on the other side, so as to avoid exposing the motor on the other side, causing maintenance risks and interference problems.

[0048] See also Figure 1-Figure 6 The electric hydraulic pump 100 includes a first shell 10, a first cover 20, a second shell 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 shell 10, and the first cover 20 and the first shell 10 are enclosed to form a first receiving cavity 11; the second shell 30 is connected to the first shell 10; the second cover 40 is connected to the second shell 30, and the second cover 40 and the second shell 30 are enclosed to form a second receiving cavity 31; the first motor 12 is arranged in the first receiving cavity 11; the second motor 32 is arranged in the second receiving cavity 31; the circuit board assembly 50 is arranged 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] In this way, the first cover 20 and the first shell 10 enclose a first receiving chamber 11, which provides a space for the first motor 12 to be installed therein and protects it from the external environment. The second cover 40 and the second shell 30 enclose a second receiving chamber 31, which provides a space for the second motor 32 to be installed therein and protects it from the external environment. The first cover 20 and the second cover 40 are separately arranged, and one of the first cover 20 and the second cover 40 can be opened separately, so that the motor arranged in the first receiving chamber 11 or the second receiving chamber 31 can be maintained separately. When maintaining the motor on one side, there is no need to open the cover on the other side, which avoids the exposure of the other side and avoids the risk of maintenance and interference.

[0050] The electric hydraulic pump 100 includes two pump assemblies 70. The first motor 12 and the second motor 32 both have motor shafts. The two pump assemblies 70 are disposed at ends of the first motor 12 and the second motor 32 that are away from each other. Each electric pump assembly may correspond to a shock absorber.

[0051] The circuit board assembly 50 includes a first driving module 51, and the first receiving cavity 11 includes a first motor cavity 111 and a first driving cavity 112 that are connected to each other. The first motor 12 is disposed in the first motor cavity 111, and the first driving module 51 is disposed in the first driving cavity 112. In this way, the first motor 12 and the first driving module 51 are separated to prevent the first motor 12 and the first driving module 51 from interfering with and 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 arranged in the second motor cavity 311, and the second drive module 52 is arranged in the second drive cavity 312. In this way, the second motor 32 and the second drive module 52 are separated to prevent the second motor 32 and the second drive module 52 from interfering with and affecting each other during operation.

[0053] In the related art, the electric hydraulic pump 100 is mainly composed of a hydraulic pump, a motor and a motor controller, and these three are arranged along the axial direction of the motor shaft. The motor controller needs to integrate more circuit elements to meet the operation control of the motor. Taking the capacitor element as an example, since the capacitor element mainly generates a rotating magnetic field by providing an additional phase difference, it ensures the smooth start and stable operation of the motor; and the capacitor element can also be used for short-term energy storage and buffering. Therefore, the size of the capacitor element is usually set larger to meet the high capacity, high power, and high voltage requirements during the start and operation of the motor. This results in the capacitor element needing to occupy a larger assembly space when assembled. If the motor controller is installed at the end of the motor, the axial size of the electric hydraulic pump 100 along the motor shaft will be significantly increased, which is not conducive to assembly; and, it is precisely because of this setting that the overall axial size is large, it is difficult to integrate other structures in the axial direction of the electric hydraulic pump 100, reducing the space utilization rate.

[0054] In view of this, in the present embodiment, along the radial direction of the first motor 12, the first drive chamber 112 is arranged on one side of the first motor chamber 111; and / or, along the radial direction of the second motor 32, the second drive chamber 312 is arranged on one side of the second motor chamber 311; and / or, along the axial direction of the first motor 12, the first motor chamber 111 is arranged on one side of the second motor chamber 311; and / or, along the axial direction of the first motor 12, the first drive chamber 112 is arranged on one side of the second drive chamber 312. In this way, since the first drive module 51 is arranged in the first drive chamber 112 and the second drive module 52 is arranged in the second drive chamber 312, and the first drive chamber 112 and the second drive chamber 312 are arranged radially outside the first motor chamber 111 and the second motor chamber 311, the first drive module 51 and the second drive module 52 will not occupy the 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 driving module 51 includes an electrically connected first driving plate 511 and a first capacitor plate 512, the first driving plate 511 is connected to the first housing 10, and the first capacitor plate 512 is connected to the first cover 20. In this way, when the first cover 20 is opened, the first capacitor plate 512 and the first driving plate 511 can be maintained. Similarly, the second driving module 52 includes an electrically connected second driving plate 521 and a second capacitor plate 522, the second driving plate 521 is connected to the second housing 30, and the second capacitor plate 522 is connected to the second cover 40, so as to facilitate the maintenance of the second capacitor plate 522 and the second driving plate 521.

[0056] In some embodiments, along the radial direction of the motor shaft, 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 shaft. That is to say, 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, the close arrangement of the two can reduce the distance for achieving electrical connection, especially when the wiring is used to meet the electrical connection between the two, the length of the wiring can be reduced, which is not only conducive to wiring, but also reduces the risk of messy wiring. At the same time, the power supply circuit 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 supply to ensure the supply of power, it is arranged on the side away from the motor assembly so that it has sufficient external space; and, since some electronic components in the power supply circuit are large in size, such an arrangement makes it possible for these electronic components to not occupy more assembly space for installing the motor assembly as much as possible.

[0057] It is understandable that, since the capacitor elements on the first capacitor plate 512 and the second capacitor plate 522 are mainly used to generate a rotating magnetic field by providing an additional phase difference, the smooth start and stable operation of the motor are ensured; and, the capacitor element can also be used for short-term energy storage and buffering, etc. Therefore, the size of the capacitor element is usually set larger to meet the high capacity, high power, high voltage requirements, etc. during the start and operation of the motor. This results in the capacitor element needing to occupy a larger assembly space when assembled. Therefore, in the present embodiment, the capacitor element is arranged on the side of the first capacitor plate 512 away from the first drive plate 511, that is, on the side away from the motor assembly, and the capacitor element is arranged on the side of the second capacitor plate 522 away from the second drive plate 521 to reduce the assembly space occupied by the motor assembly.

[0058] The first cover 20 includes a first convex portion 21, which protrudes in the direction away from the first housing 10. The first convex portion 21 is provided with a first capacitor cavity connected to the first driving cavity 112 on one side facing the first housing 10, and the first capacitor plate 512 is at least partially disposed in the first capacitor cavity. The first capacitor cavity provides a space for installing the first capacitor plate 512, has a simple structure, and has a low processing cost.

[0059] In some embodiments, the second cover 40 is further provided with a second convex portion 41, which protrudes in the direction away from the second housing 30, and a second capacitor cavity connected to the second drive cavity 312 is formed on the side of the second convex portion 41 facing the second housing 30. The first convex portion 21 and the second convex portion 41 expand the accommodation space of the first drive cavity 112 and the second drive cavity 312, facilitate the installation and maintenance of the first capacitor plate 512 and the second capacitor plate 522, and increase 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 shell 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 step structure. Among them, the first part 211 is used to accommodate the electronic components on the first capacitor plate 512. The first part 211 and the second part 212 jointly accommodate 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 can be understood that in some other embodiments, the first protrusion 21 may also include only the first part 211 or only the second part 212, that is, the first protrusion 21 is not set as a step structure, and it only needs to meet the installation requirements of the first capacitor plate 512.

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

[0062] In some embodiments, the first portion 211 and / or the second portion 212 is provided with the first capacitor cavity on one side facing the first housing 10. That is, the first capacitor cavity may also be formed only in the first portion 211 or the second portion 212, or may be formed by the first portion 211 and the second portion 212. The first capacitor cavity may be provided according to the size and layout position of the capacitor element on the first capacitor plate.

[0063] It is understandable that in other embodiments, the input power supply 60 may also be replaced by other electronic component structures, which can be configured according to working requirements and working environment.

[0064] In some embodiments, a connection base 22 is provided on the second portion 212, and the connection base 22 is provided with a first mounting hole 221, and the input power 60 is connected to the connection base 22 and passes through the first mounting hole 221, and the input power 60 is electrically connected to the first capacitor plate 512 of the circuit board assembly 50. The connection base 22 is used for installing and fixing the input power 60 to improve its working stability.

[0065] The circuit board assembly 50 includes a control board 53, which is electrically connected to the first driving 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. In this way, the control cavity 14 provides an installation space for the control board 53, and the control board 53 is located between the first motor 12 and the second motor 32, so as to facilitate 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 form a motor control assembly. The control board 53 is mainly responsible for processing input signals, executing control algorithms, outputting control instructions, etc., and 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 by the present application, the drive module and the control board 53 are separately arranged, which can reduce the space occupied by the circuit board assembly 50 in the axial direction, so as to reduce the axial size of the entire electric hydraulic pump. At the same time, it is precisely because the drive module and the control board 53 are arranged in different directions that the drive module and the control board 53 can be separated from the structure, and the distance between the high-voltage electronic components in the drive module and the low-voltage electronic components in the control board 53 is increased, thereby reducing the interference of the high-voltage electronic components on the pressing electronic components. Among them, the above-mentioned drive module includes a first drive module 51 and a second drive module 52, and the above-mentioned axial direction is the axial direction of the first motor 12 and the second motor 32.

[0068] In some embodiments, the first shell 10 includes a first base shell 15 and a first extension 23 connected to each other, and the first extension 23 is arranged at one end of the first base shell 15 facing the second shell 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 a first receiving cavity 11; along the direction of the first base shell 15 toward the first cover 20, the first extension 23 protrudes from the first base shell 15. The second shell 30 includes a second base shell 33 and a second extension 44 connected to each other, and the second extension 44 is arranged at one end of the second base shell 33 facing the first shell 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 a 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, and the second extension 44 is connected to the first extension 23, and a control cavity 14 is arranged in the second extension 44 and the first extension 23. As such, the first extension portion 23 and the second extension portion 44 increase the space in the radial direction of the electric hydraulic pump 100 , and thus the area of ​​the control plate 53 can be set larger.

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

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

[0071] It should be explained that, in this embodiment, see 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 state and position as shown in the figure. It can be understood that when the electric cylinder hydraulic pump is not placed or installed horizontally as shown in the figure, but installed vertically or at an angle, the first direction X should also be changed adaptively.

[0072] In some embodiments, the aforementioned first drive board 511 and the second drive board 521 are electrically connected to the control board 53 through the first connector respectively. Among them, the control board 53 is provided with a first connector, and the first connector includes a first plug connector 531 and a first socket 5111 that can be plugged and matched with each other. One of the first plug connector 531 and the first socket 5111 is provided on the first drive board 511 and the second drive board 521, and the other is provided on the control board 53, so as to electrically connect the control board 53 with the first drive board 511 and the second drive board 521. That is to say, by using the quick plug-in method of the first plug connector 531 and the first socket 5111, the transmission of electrical signals between the first drive board 511 and the second drive board 521 and the control board 53 is met, the operation is faster and more convenient, and it is convenient for quick disassembly and subsequent maintenance; and such a method omits the wiring of the line, etc., and the overall structure is simple. Among them, the first plug connector 531 and the first socket 5111 can be plugged and matched or elastically plugged and matched in the form of plug-ins, pins, inserts, etc. Alternatively, the first driving board 511 and the second driving board 521 are electrically connected to the control board 53 via a wire, and two ends of the wire are respectively welded to the first driving board 511 and the second driving board 521 and the control board 53.

[0073] The electric hydraulic pump 100 further includes a signal connector 61, which is disposed in the second extension portion 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, the distance between the two is closer, and the assembly is 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 an escape area 42, and the second protrusion 41 is disposed in the receiving area 43, and expands the installation space inside the receiving area 43 to facilitate the installation of the second capacitor plate 522. The signal connector 61 is disposed in the escape 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 escape area 42, so as to be plugged and matched with the signal connector 61.

[0075] In some embodiments, a mating groove 441 is provided on the side of the second extension portion 44 away from the first extension portion 23, and the shape of the groove wall of the mating groove 441 is adapted to the signal connector 61. After the signal connector 61 is plugged into 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 portion 44 is provided with a second mounting hole 442 communicating with the control cavity 14 , and the signal connector 61 is passed through the second mounting hole 442 and electrically connected to the control board 53 .

[0077] In some embodiments, the electric hydraulic pump 100 includes a motor sensor 62, which is disposed on the control board 53 and electrically connected to the control board 53. The motor sensor 62 is connected to the first motor 12 and / or the second motor 32, and the motor sensor 62 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 the motor sensor 62 may not be directly connected to the first motor 12 and / or the second motor 32. The setting method of the motor sensor 62 may be set according to actual needs and is not limited here. The motor parameters may include angle, speed, temperature, oil pressure, etc., which 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 the sensor circuit board 54 is electrically connected to the motor sensor 62 and the control board 53, respectively. The motor sensor 62 transmits a signal to the sensor circuit board 54, and transmits the signal to the control board 53 via the sensor circuit board 54. The control board 53 is also provided with a collection circuit, which is electrically connected to the sensor circuit board 54 and to the main control circuit. The collection circuit collects the detection signal transmitted by the sensor circuit board 54 and transmits it to the main control circuit.

[0079] In some embodiments, the number of motor sensors 62 can be set to two, one of which is connected to the first motor 12 and the control board 53, and the other is connected to the second motor 32 and the control board 53. In the axial direction of the first motor 12, the two motor sensors 62 are respectively arranged on opposite sides of the control board 53. Correspondingly, the number of sensor circuit boards 54 can be set to two, each of which is 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. A mounting position for mounting the sensor circuit board 54 is provided on the end plate 13, so as to facilitate the stable connection between the sensor circuit board 54 and the end plate 13, so as to support the sensor circuit board 54. The sensor circuit board 54 can be fixed to the end plate 13 by screws. The provision of the end plate 13 not only provides an installation base for the sensor circuit board 54, but also helps to separate the motor body from the sensor circuit board 54, protect the sensor circuit board 54 from interference from other structures, and ensure stable operation. Among them, the above-mentioned 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 convex enclosure 131, and the enclosure 131 is arranged around the outer peripheral side of the second connector. Taking the second plug connector 532 in the second connector as an example, which is arranged on the sensor circuit board 54, the enclosure 131 is arranged around the outer peripheral side of the second plug connector 532 to protect the second plug connector 532; and when the second plug connector 532 is mated with the second socket 533, it is equivalent to the enclosure 131 being arranged around the outer peripheral side of the second connector, reducing the interference of other structures on the second connector and ensuring the plugging stability.

[0082] In some embodiments, the enclosure 131 is provided with a notch along the radial direction of the motor shaft, and the sensor circuit board 54 is provided with a connecting arm 132, which is inserted into the notch and fixed to the end plate 13. In other words, the connecting arm 132 is extended out of the notch to connect with the end plate 13, which improves the connection stability of the sensor circuit board 54 relative to the end plate 13, especially the stability at the position of the second connector, to ensure that the sensor circuit board 54 will not be warped or shaken due to the plug-in effect during plug-in mating. In actual use, the second plug connector 532 is provided at the lower position of the sensor circuit board 54, and a plurality of round holes for screw fixing are also provided at the upper position of the sensor circuit board 54 to ensure the reliable connection between the sensor circuit board 54 and the end plate 13.

[0083] Another option, see Figure 6, the sensor module also includes a temperature sensor 80, and the temperature sensor 80 is arranged at an interval from the motor sensor 62. The temperature sensor 80 is also located at the end 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 the first motor 12 and the second motor 32 from overheating. In actual use, the first motor 12 and the second motor 32 also include a heat dissipation structure. The temperature signal detected by the temperature sensor 80 is transmitted to the acquisition circuit for collection, and then transmitted by the acquisition circuit 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 an instruction to the drive circuit to control the heat dissipation structure to start through the drive circuit to dissipate heat. This is just an example.

[0084] In some embodiments, the temperature sensor 80 has a temperature signal line 81, and the temperature signal line 81 is directly electrically connected to the control board 53. It can be understood that the temperature sensor 80 includes a detection terminal and a temperature signal line 81 connected to the detection terminal, and the temperature signal line 81 can transmit the detection signal of the detection terminal to the main control circuit of the control board 53, and the main control circuit analyzes and processes it. The temperature signal line 81 is used to directly transmit the signal to the control board 53 to reduce interference in 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, and the temperature signal line 81 is electrically connected to the control board 53 through the temperature signal transmission circuit. In other words, the temperature signal line 81 can be first connected to the sensor circuit board 54, and then the signal is transmitted through the second connector between the sensor circuit board 54 and the control board 53. Such a setting can reduce the length of the temperature signal line 81 and improve the problem of cluttered lines. Among them, 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 plug connector 532 in the second connector to ensure that the detection signal of 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 welded to the position of the sensor circuit board 54 corresponding to the temperature signal transmission circuit. Alternatively, the sensor circuit board 54 is provided with a signal transmitter, the signal transmitter is provided with a plug port, and the end of the signal transmission line of the temperature sensor 80 is connected with a matching plug, and the matching plug is plugged and matched with the plug port. In other words, the signal line of the temperature sensor 80 can also be quickly disassembled and assembled by plugging the matching plug with the plug port, which is not only convenient to operate, but also more stable in 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 is electrically connected to the control board 53. It can be understood that the pressure sensor is used to detect the oil pressure of the pump assembly 70 and transmit the detection signal to the control board 53 (i.e., the control board 53). After the main control circuit on the control board 53 analyzes and processes the detection signal, it controls the operation of the motor body through the drive circuit on the first circuit board to adjust the pump assembly 70 to increase or decrease the power.

[0088] In this embodiment, the pressure sensor is electrically connected to the control board 53 through the first drive module 51 and the 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 provided with a drive circuit, and the first drive board 511 and the second drive board 521 are provided with a pressure signal transmission circuit. The pressure sensor is electrically connected to the first drive board 511 and the second drive board 521, and is electrically connected to the control board 53 through the pressure signal transmission circuit. That is, the detection signal of the pressure sensor is transmitted to the pressure signal transmission circuit, and then transmitted to the control board 53 via the pressure signal transmission circuit and the first connector, and processed and analyzed by the main control circuit.

[0089] In the related art, since the pressure sensor is used to detect the oil pressure of the pump assembly 70, the pressure sensor needs to be set close to the pump assembly 70, which results in a large distance between the pressure sensor and the control board 53. If the connection is directly made by means of a cable, the cable is too long and easily interferes with other structures; and it is also necessary to add a wiring structure to easily store the cable, which increases the manufacturing process and structural complexity. Therefore, in this embodiment, the first drive board 511 and the second drive board 521 are used as signal transfers between the pressure sensor and the control board 53, so there is no need to use a longer cable, which reduces 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 is electrically connected 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 is provided with pressure points for matching with the pressure detection body. The pressure points change under the action of the pressure detection body, thereby prompting the pressure circuit board to transmit the detection signal to the first drive board 511 and the second drive board 521, and then transmit it 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 driving board 511 and the second driving board 521 through a third connector. The third connector includes a third plug connector and a third socket that are plugged into each other, one of the third plug connector and the third socket is provided on the pressure circuit board, and the other is provided on the control board 53, so as to electrically connect the control board 53 and the pressure circuit board. For example, the third socket is provided on the first driving board 511 and the second driving board 521, and the third plug connector is provided on the pressure circuit board.

[0092] The pressure sensor also includes a sensor bracket 90, and the aforementioned pressure circuit board is arranged on the sensor bracket 90, and the sensor bracket 90 is connected to the pump assembly 70. The sensor bracket 90 is provided with a mounting groove, and at least part of the pressure circuit board is arranged in the mounting groove and can be fastened by screws; and the screws can also simultaneously connect the sensor bracket 90, the pressure circuit board and the mounting position on the pump assembly 70, which is convenient for assembly. At this time, in order to improve the connection reliability between the pressure circuit board and the sensor bracket 90, the pressure circuit board can be embedded in the mounting groove.

[0093] At the same time, the sensor bracket 90 is provided with a wire hole, and one end of the pressure signal connection wire is inserted into the wire hole to be electrically connected to the pressure circuit board. The sensor bracket 90 is also provided with a wiring cavity, which is conducive to the wiring arrangement of the pressure signal connection wire. Among them, the wiring cavity can be a groove structure recessed in the sensor bracket 90, or it can be a hole structure provided inside the sensor bracket 90.

[0094] Among them, the sensor bracket 90 is convexly provided with an assembly protrusion, and the assembly protrusion is surrounded by an insertion cavity, and a hard pin is arranged in the insertion cavity. The end of the pressure signal connection wire away from the pressure detection body is passed through the assembly protrusion along the height direction of the first drive plate 511 and the second drive plate 521, and is connected to the hard pin. At this time, the assembly protrusion and the hard pin jointly define the aforementioned third plug connector. The third plug socket is a block structure convexly provided on the side of the first drive plate 511 and the second drive plate 521 facing the motor shaft, and is provided with a jack. The hard pin is inserted into the jack to meet the electrical connection.

[0095] It is understandable that the provision of the assembly protrusion can protect the hard pin inside it, prevent the hard pin from being bumped and bent by other structures, and ensure the plugging accuracy with the third socket. Among them, there is at least one pressure signal connecting wire, and each pressure signal connecting wire is correspondingly connected to a hard pin, and each hard pin corresponds to a socket provided in the third socket. The pressure signal connecting wire can be integrally formed with the corresponding hard pin. The number of pressure signal connecting wires can be set according to actual needs, such as being set to one, two or five, etc., which is not limited here.

[0096] Some embodiments of the present application provide an active hydraulic suspension, including a shock absorber and the above-mentioned electric hydraulic pump 100, the electric hydraulic pump 100 being in fluid communication with the shock absorber. The electric hydraulic pump 100 is used to provide active vibration reduction control for the shock absorber, thereby improving the vibration reduction effect of the active hydraulic suspension. The active hydraulic suspension also includes a suspension body, and the above-mentioned electric hydraulic pump 100 and shock absorber are both connected to the suspension body.

[0097] Another embodiment of the present application provides a car, including the above-mentioned active hydraulic suspension, the wheels are connected to the active hydraulic suspension through the wheel hub, and the active hydraulic suspension is connected to the body to support the wheels and the body, and then cooperate with other structures to achieve wheel motion trajectory control. The active hydraulic suspension can reduce the impact transmitted to the wheels due to road bumps during the operation of the car, thereby improving the stability and comfort of the car during driving.

[0098] Compared with the prior art, the electric hydraulic pump 100 provided by the present invention separates the first cover body 20 and the second cover body 40, and one of the first cover body 20 and the second cover body 40 can be opened separately, so that the motor arranged in the first receiving cavity 11 or the second receiving cavity 31 can be maintained separately. When maintaining the motor on one side, there is no need to open the cover body on the other side, thereby avoiding exposure of the other side and avoiding maintenance and interference risks.

[0099] The technical features of the above-described embodiments may be arbitrarily combined. To make the description concise, not all possible combinations of the technical features in the above-described 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 above-mentioned embodiments only express several implementation methods of the present invention, and the descriptions thereof are relatively specific and detailed, but they cannot be understood as limiting the scope of the invention patent. It should be pointed out that, for ordinary technicians in this field, several variations and improvements can be made without departing from the concept of the present invention, and these all belong to the protection scope of the present invention. Therefore, the protection scope of the patent of the present invention shall be subject to the attached claims.

Claims

1. An electric hydraulic pump, characterized in that: include: A first housing (10); A first cover body (20), the first cover body (20) being connected to the first shell (10), the first cover body (20) and the first shell (10) enclosing to form a first receiving cavity (11); A second shell (30), the second shell (30) being connected to the first shell (10); A second cover body (40), wherein the second cover body (40) is connected to the second shell (30), and the second cover body (40) and the second shell (30) are enclosed to form a second receiving cavity (31); A first motor (12) is disposed in the first receiving chamber (11); A second motor (32) is disposed in the second receiving chamber (31); A circuit board assembly (50) is arranged 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) comprises a first driving module (51); The first receiving cavity (11) comprises a first motor cavity (111) and a first driving cavity (112) which are connected to each other; the first motor (12) is arranged in the first motor cavity (111); and the first driving module (51) is arranged in the first driving cavity (112).

3. The electric hydraulic pump according to claim 2, characterized in that: The circuit board assembly (50) includes a second driving module (52); The second receiving cavity (31) comprises a second motor cavity (311) and a second driving cavity (312) which are connected to each other. The second driving cavity (312) is also connected to the first driving cavity (112). The second motor (32) is arranged in the second motor cavity (311), and the second driving module (52) is arranged in the second driving 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 arranged 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 arranged 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 arranged on one side of the second motor cavity (311); and / or, Along the axial direction of the first motor (12), the first driving cavity (112) is arranged on one side of the second driving cavity (312).

5. The electric hydraulic pump according to claim 2, characterized in that: The first driving module (51) comprises a first driving board (511) and a first capacitor board (512) which are electrically connected, wherein the first driving board (511) is connected to the first shell (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 body (20) comprises a first protrusion (21), and a first capacitor cavity connected to the first driving cavity (112) is provided on a side of the first protrusion (21) facing the first shell (10), and the first capacitor plate (512) is at least partially arranged in the first capacitor cavity.

7. The electric hydraulic pump according to claim 6, characterized in that: The first convex portion (21) comprises a first portion (211) and a second portion (212); along a direction away from the first shell (10), the height of the first portion (211) is greater than the height of the second portion (212); and the first capacitor cavity is provided on a side of the first portion (211) and / or the second portion (212) facing the first shell (10).

8. The electric hydraulic pump according to any one of claims 2 to 7, characterized in that: The circuit board assembly (50) comprises a control board (53), and the control board (53) is electrically connected to the first driving module (51); A control chamber (14) is provided between the first receiving chamber (11) and the second receiving chamber (31), and the control panel (53) is arranged in the control chamber (14).

9. The electric hydraulic pump according to claim 8, characterized in that: The first shell (10) comprises a first base shell (15) and a first extension portion (23) connected to each other, wherein the first extension portion (23) is arranged at one end of the first base shell (15) facing the second shell (30); The first base shell (15) is connected to the first cover body (20), and the first base shell (15) and the first cover body (20) are enclosed to form the first receiving cavity (11); Along the direction from the first base shell (15) toward the first cover body (20), the first extension portion (23) protrudes from the first base shell (15), and the control chamber (14) is provided in the first extension portion.

10. The electric hydraulic pump according to claim 9, characterized in that: The second shell (30) comprises a second base shell (33) and a second extension portion (44) connected to each other, and the second extension portion (44) is arranged at one end of the second base shell (33) facing the first shell (10); The second base shell (33) is connected to the second cover body (40), and the second base shell (33) and the second cover body (40) are enclosed to form the second receiving cavity (31); Along the direction from the second base shell (33) to the second cover body (40), the second extension portion (44) protrudes from the second base shell (33), the second extension portion (44) is connected to the first extension portion (23), and the control chamber (14) is provided in the second extension portion (44) and the first extension portion (23).

11. The electric hydraulic pump according to claim 10, characterized in that: The electric hydraulic pump further comprises an input power source (60); a first mounting hole (221) communicating with the first receiving cavity (11) is provided on the first cover body (20); the input power source (60) is passed through the first mounting hole (221) and is electrically connected to the first driving module (51); and / or, The electric hydraulic pump further comprises a signal connector (61); the second extension portion (44) is provided with a second mounting hole (442) communicating with the control chamber (14); the signal connector (61) is passed 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 source (60), wherein the input power source (60) is disposed in the first housing (10), and the input power source (60) is electrically connected to the circuit board assembly (50); and / or It also comprises a signal connector (61), wherein the signal connector (61) is arranged on the first housing (10), and the signal connector (61) is connected to the circuit board assembly (50).

13. A hydraulic suspension, characterized in that: include: Shock absorbers; The electric hydraulic pump according to any one of claims 1 to 12, wherein the electric hydraulic pump is connected to the shock absorber.

14. A car, characterized in that: include: Shock absorbers; The electric hydraulic pump according to any one of claims 1 to 13, wherein the electric hydraulic pump is connected to the shock absorber.

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