Electric pump, active hydraulic suspension and automobile

Abstract

The utility model relates to the technical field of vehicles, and provides an electric pump, an active hydraulic suspension and an automobile. The electric pump comprises two electric pump sets, each electric pump set comprises a motor with a motor shaft and a pump connected to the motor shaft, the pumps are arranged at the ends, in the axial direction of the motor shafts, of the motors, and the ends, away from the corresponding pumps, of the two electric pump sets are connected; the electric pump further comprises a driving module and a control module, the driving module is arranged on the peripheral side of the motor in the radial direction of the motor shaft, the driving module is provided with a power circuit and a driving circuit which are electrically connected, and the driving circuit is electrically connected with the motor; the control module is arranged at the ends, away from the pump, of the motors in the axial direction of the motor shaft and located between the two motors, and the control module is provided with a main control circuit electrically connected to the drive circuit. According to the electric pump, the occupied axial space is reduced, high-voltage electronic elements and low-voltage electronic elements are separated in space, and signal interference is reduced.

Description

Technical Field

[0001] This application relates to the field of vehicle technology, and in particular to an electric 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] In related technologies, electric hydraulic pumps typically consist of a hydraulic pump, a motor, and a motor controller, all arranged axially along the motor shaft. Because the motor controller needs to integrate numerous electronic components—such as those for starting and stopping the motor and for monitoring motor performance—and some of these components are quite large, the overall size of the electric hydraulic pump is large, requiring significant assembly space. Furthermore, the integration of numerous electronic components often leads to signal interference between them. Utility Model Content

[0004] Therefore, it is necessary to provide an electric pump that not only reduces the axial space occupied, but also allows high and low pressure components to be spatially separated, reducing signal interference. While meeting normal use requirements, it simplifies the structure, meets the requirements of the overall lightweight design of the electric pump, reduces assembly space, and is more conducive to integration in smaller spaces.

[0005] An electric pump includes two sets of electric pump units. Each set of electric pump units includes a motor with a motor shaft and a pump connected to the motor shaft. The pump is located at one end of the motor along the axial direction of the motor shaft. The two sets of electric pump units are connected at the ends opposite to their respective pumps. The electric pump also includes a drive module and a control module. The drive module is radially disposed on the outer periphery of the motor along the motor shaft. The drive module has a power supply circuit and a drive circuit, which are electrically connected. The drive circuit is also electrically connected to the motor. The control module is axially disposed on the end of the motor opposite to the pump along the motor shaft and is located between the two motors. The control module has a main control circuit electrically connected to the drive circuit.

[0006] Understandably, separating the drive module and control module is equivalent to distributing the various electronic components used to drive and control the motor. Compared to integrating them all along the motor shaft, this arrangement reduces the number of electronic components integrated at the motor end, thereby reducing the space occupied by the control module along the motor shaft and thus reducing the overall axial dimension of the electric pump. Furthermore, it improves the space utilization on the outer periphery of the motor. Simultaneously, by separating the drive module and control module at different locations on the motor, they are structurally separated, increasing the spacing between the high-voltage electronic components in the drive module and the low-voltage electronic components in the control module, thereby reducing interference from the high-voltage components to the low-voltage components. This eliminates the need for additional structures to meet anti-interference requirements, further reducing the size of the electric pump.

[0007] In some embodiments, the drive module includes a first circuit board and a second circuit board arranged radially along the motor axis, the first circuit board having the power supply circuit and the second circuit board having the drive circuit.

[0008] In other words, by using the arrangement of the first and second circuit boards, the electronic components corresponding to the drive module are distributed on the two circuit boards and arranged radially along the motor shaft, further reducing the space occupied in the axial direction and making full use of the space in the radial direction.

[0009] In some embodiments, the first circuit board is located on the side of the second circuit board away from the motor shaft radially; the power supply circuit includes at least a capacitor element located on the side of the first circuit board away from the second circuit board.

[0010] This setup allows the first circuit board to have ample external space and reduces the space occupied by the capacitor assembly on the motor assembly.

[0011] In some embodiments, the electric pump further includes a sensor module, with each motor corresponding to a sensor module, which is located on both sides of the control module along the motor shaft axis and electrically connected to the control module.

[0012] In other words, the sensor module is used to detect the operating performance of the motor, which facilitates the control module to control it precisely.

[0013] In some embodiments, the sensor module includes a position sensor and a temperature sensor, both arranged at intervals and located at one end of the motor away from the pump, and both the position sensor and the temperature sensor are electrically connected to the control module.

[0014] In other words, by using position sensors and temperature sensors to detect the motor's rotation and temperature respectively, it is beneficial to regulate the motor's operation and heat dissipation.

[0015] In some embodiments, the position sensor includes a detection body and a sensor circuit board connected to the detection body, the sensor circuit board being electrically connected to the control module;

[0016] The temperature sensor has a temperature signal line, which is directly electrically connected to the control module; or, the sensor circuit board has a temperature signal transmission circuit, the temperature sensor has a temperature signal line, and the temperature signal line is electrically connected to the control module through the temperature signal transmission circuit.

[0017] In other words, by utilizing the sensor circuit board to transmit the detection signals from the position sensor and temperature sensor to the control module, the length of the temperature signal line can be reduced, thus improving the problem of messy wiring.

[0018] In some embodiments, the sensor module further includes a pressure sensor disposed near the pump, the pressure sensor being electrically connected to the control module via the drive module.

[0019] Understandably, the pressure sensor is used to detect the oil pressure of the pump, and the signal transmission between the pressure sensor and the control module is relayed through the drive module, reducing the wiring length.

[0020] In some embodiments, the drive module includes a second circuit board with a drive circuit, the second circuit board having a pressure signal transmission circuit, the pressure sensor being electrically connected to the second circuit board and electrically connected to the control module through the pressure signal transmission circuit.

[0021] In other words, the detection signal from the pressure sensor can be directly transmitted to the pressure signal transmission circuit on the second circuit board. The signal transmission is achieved through the electrical connection between the second circuit board and the control module, further reducing the wiring length.

[0022] In some embodiments, each of the electric pump units corresponds to one of the drive modules, and the two sets of drive modules are disposed on both sides of the control module along the axial direction of the motor shaft, and are both electrically connected to the control module.

[0023] Understandably, each of the two drive modules can be adapted to a motor, which is conducive to independent and precise control of the operation of the corresponding motor.

[0024] In some embodiments, each drive module includes a first circuit board with the power supply circuit and a second circuit board with the drive circuit, one of the two first circuit boards having a filter circuit, the electric pump also includes a power input connector connected to the one with the filter circuit; and / or, the control module protrudes radially from the drive module along the motor shaft, the electric pump also includes a signal connector connected to the protruding portion of the control module.

[0025] In other words, the power input via the power input connector first passes through a filter circuit and then is split to two second circuit boards, allowing for the separate supply of power to the two motors. Simultaneously, the protruding design of the control module provides ample space on the control board for electrical connection with the signal connector, avoiding the need for additional assembly space.

[0026] In some embodiments, the motor includes a motor body and an assembly housing, the assembly housing surrounding a motor cavity, and the motor body disposed within the motor cavity; wherein, the end of the assembly housing opposite to the pump has a first accommodating space, and the outer periphery of the assembly housing has a second accommodating space, the control module is disposed in the first accommodating space, and the drive module is disposed in the second accommodating space; the two assembly housings are connected at the first accommodating space, and the electric pump further includes a first cover plate and a second cover plate, which are spaced apart or adjacent along the motor shaft axis and respectively connected to the outer periphery of one of the assembly housings for sealing the second accommodating space.

[0027] This setup is equivalent to separating the two drive modules into independent spaces. When one cover is opened, the other cover can remain closed, reducing interference with the other drive module and ensuring maintenance safety.

[0028] In some embodiments, the mounting housing has a protrusion at one end opposite to the pump, which protrudes radially toward the drive module along the motor shaft, and the protrusion and the mounting housing together define a first receiving space.

[0029] Understandably, the protrusions on the housing separate the first and second cover plates, ensuring that they only cover their respective second accommodating spaces. Furthermore, this design prevents the control board from being completely exposed radially along the motor shaft. This reduces assembly and maintenance interference.

[0030] In some embodiments, one of the first cover plate and the second cover plate is provided with a clearance recess for accommodating a signal connector, the signal connector passing through a corresponding protrusion and being electrically connected to the control module.

[0031] In other words, the recessed part can accommodate the signal connector, thereby reducing the space occupied by the signal connector in the radial direction of the motor shaft.

[0032] This application also provides an active hydraulic suspension, including a shock absorber and the aforementioned electric pump, wherein the electric pump is in fluid communication with the shock absorber.

[0033] This application also provides a vehicle including the aforementioned active hydraulic suspension. Attached Figure Description

[0034] To more clearly illustrate the technical solutions in the embodiments of this application or the conventional technology, the drawings used in the description of the embodiments or the conventional technology will be briefly introduced below. Obviously, the drawings described below are only some embodiments of this application. For those skilled in the art, other drawings can be obtained based on these drawings without creative effort.

[0035] Figure 1 A front view of an electric pump provided according to an embodiment of this application;

[0036] Figure 2 A first exploded view of an electric pump provided in an embodiment of this application;

[0037] Figure 3 A second exploded view of an electric pump provided in an embodiment of this application;

[0038] Figure 4 A first partial exploded view of an electric pump provided in an embodiment of this application;

[0039] Figure 5 A second partial exploded view of an electric pump provided in an embodiment of this application;

[0040] Figure 6 A partial cross-sectional view of an electric pump provided in an embodiment of this application;

[0041] Figure 7 A partial schematic diagram of an electric pump provided in an embodiment of this application;

[0042] Figure 8 A partial front view of an electric pump provided in an embodiment of this application;

[0043] Figure 9 This is a first partial schematic diagram of an electric pump provided in an embodiment of this application;

[0044] Figure 10 A partial view of the pressure sensor and drive module in an electric pump provided in an embodiment of this application;

[0045] Figure 11A schematic diagram of a pressure sensor in an electric pump provided in an embodiment of this application;

[0046] Figure 12 An exploded view of a pressure sensor in an electric pump provided in an embodiment of this application.

[0047] Reference numerals: 100, Electric pump unit; 110, Motor; 111, Motor body; 112, Assembly housing; 120, Pump; 130, Drive module; 131, First circuit board; 132, Second circuit board; 133, Capacitor element; 140, Control module; 141, Control board; 151, First connector; 152, Second connector; 153, Third connector; 154, Fourth connector; 160, Sensor module; 161, Position sensor; 162, Temperature sensor; 163, Signal transmitter; 164, Pressure sensor; 171, Power input connector; 172, Signal connector; 181, First cover plate; 182, Second cover plate; 1101, Motor cavity; 1102, Second receiving space; 1103, First receiving space; 1121, End plate ; 1122, Enclosure platform; 1123, Notch; 1124, Protrusion; 1125, Enclosure section; 1126, Partition section; 1511, First connector; 1512, First connector socket; 1521, Second connector; 1522, Second connector socket; 1531, Third connector; 1532, Third connector socket; 1541, Fourth connector; 1542, Fourth connector socket; 1611, Sensor circuit board; 1612, Connecting arm; 1621, Temperature signal line; 1641, Pressure detection body; 1642, Pressure circuit board; 1643, Sensor bracket; 1644, Wiring cavity; 1645, Assembly protrusion; 1646, Insertion cavity; 1647, Rigid pin; 1648, Pressure signal connecting wire; 1721, Pin; 1801, Avoidance recess. Detailed Implementation

[0048] 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.

[0049] It should be noted that when a component is referred to as being "fixed to" or "attached to" another component, it can be directly on the other component or there may be an intermediate component. When a component is considered to be "connected to" another component, it can be directly connected to the other component or there may be an intermediate component present. The terms "vertical," "horizontal," "upper," "lower," "left," "right," and similar expressions used in this application's specification are for illustrative purposes only and do not represent the only possible implementation.

[0050] 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.

[0051] 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.

[0052] 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.

[0053] In related technologies, electric hydraulic pumps mainly consist of three components: a hydraulic pump, a motor, and a motor controller, all arranged axially along the motor shaft. The motor controller needs to integrate numerous electronic components to control the motor's operation. The motor controller primarily comprises a control section and a drive section. The control section, as the core of the motor controller, is mainly responsible for processing input signals, executing control algorithms, and outputting control commands. The drive section is mainly used to convert control signals into the electrical power required by the motor to drive its operation. The drive section typically includes various power electronic components for high voltage and high power. Therefore, there is often interference between the high-voltage circuit and the low-voltage circuit in the drive and control sections. Furthermore, some electronic components in the motor controller are relatively large, requiring significant assembly space during assembly, resulting in a larger overall size and hindering assembly, especially in confined spaces.

[0054] To address this, one embodiment of this application provides an electric pump that not only reduces axial space occupation but also spatially separates high- and low-voltage electronic components, reducing signal interference. While meeting normal usage requirements, it simplifies the structure, achieves a lightweight overall design for the electric pump, reduces assembly space, and is more suitable for integration into smaller locations. The electric pump is described in detail below.

[0055] Please see Figures 1 to 4 In some embodiments, the electric pump includes two sets of electric pump groups 100. Each set of electric pump groups 100 includes a motor 110 with a motor shaft and a pump 120 connected to the motor shaft. The pump 120 is located at one end of the motor 110 along the axial direction of the motor shaft, and the two sets of electric pump groups 100 are connected at the ends opposite to their respective pumps 120. Each set of electric pump groups 100 can correspond to a vibration damper. The electric pump also includes a drive module 130 and a control module 140. The drive module 130 is radially disposed on the outer periphery of the motor 110 along the motor shaft. The drive module 130 has a power supply circuit and a drive circuit, which are electrically connected, and the drive circuit is electrically connected to the motor 110. The control module 140 is axially disposed at the end of the motor 110 opposite to the pump 120 and located between the two motors 110. The control module 140 has a main control circuit electrically connected to the drive circuit.

[0056] like Figure 6 As shown, the motor 110 includes at least a motor body 111, the motor shaft is connected to the rotor assembly in the motor body 111, the stator assembly in the motor body 111 is arranged around the outer periphery of the rotor assembly, and the stator assembly is provided with leads to be electrically connected to the aforementioned drive module 130 and control module 140, thereby realizing the power output and control of the motor body 111.

[0057] In the electric pump provided in this application, the drive module 130 and the control module 140 are separately arranged, which is equivalent to modularly arranging the various electronic components used to drive and control the motor body 111 separately. Specifically, the electronic components used to process input signals, execute control algorithms, and output control commands, and the electronic components used to convert control signals into the power required by the motor to drive the motor body 111, are arranged separately. Compared to integrating both along the motor shaft, this application arranges the drive module 130 and the control module 140 at the end and outer periphery of the motor 110, respectively. This arrangement reduces the number of electronic components integrated at the end of the motor 110, thereby reducing the space occupied along the motor shaft and reducing the axial dimension of the entire electric pump; on the other hand, it improves the space utilization of the outer periphery of the motor 110. Meanwhile, by placing the drive module 130 and the control module 140 in different positions on the motor 110, the drive module 130 and the control module 140 can be structurally separated, increasing the distance between the high-voltage electronic components in the drive module 130 and the low-voltage electronic components in the control module 140, thereby reducing the interference of the high-voltage electronic components to the low-voltage electronic components.

[0058] Furthermore, since the drive module 130 includes a power supply circuit and a drive circuit, the electronic components forming the power supply circuit are typically significantly larger than other electronic components. Therefore, placing the drive module 130 on the outer periphery of the motor 110 is equivalent to transferring the larger electronic components to the outer periphery of the motor 110, while the electronic components remaining at the end of the motor 110 are all small in size, thereby significantly reducing the axial dimension.

[0059] In some specific embodiments, taking a square or near-square cross-section of the motor 110 as an example, the motor 110 has four sides, and the aforementioned drive module 130 is located on any one of these sides. Figure 4 In this context, the drive module 130 is positioned on the upper side of the motor 110 along the vertical direction. Here, "quasi-square" refers to a shape resembling a square or possessing square-like characteristics.

[0060] Please see Figures 2 to 4 In some embodiments, the drive module 130 includes a first circuit board 131 and a second circuit board 132 arranged radially along the motor axis. The first circuit board 131 is provided with a power supply circuit, and the second circuit board 132 is provided with a drive circuit.

[0061] In other words, by using the arrangement of the first circuit board 131 and the second circuit board 132, the electronic components corresponding to the drive module 130 are distributed across the two circuit boards, thus reducing the number of integrated electronic components on each circuit board and consequently reducing the size of the corresponding circuit board. Furthermore, the radial arrangement of the first circuit board 131 and the second circuit board 132 along the motor axis allows multiple electronic components to be arranged radially along the motor axis, reducing the space occupied along the motor axis. Simultaneously, since the first circuit board 131 has a power supply circuit and the second circuit board 132 has a drive circuit, it is equivalent to modularly distributing the electronic components used to provide power or external power, and the electronic components used to convert control signals into the power required by the motor to drive the motor body 111, reducing interference between the various electronic components.

[0062] The first circuit board 131 and the second circuit board 132 are arranged radially apart along the motor shaft to ensure a safe distance between them and minimize interference between electronic components. Furthermore, the distance between them can also accommodate some electronic components, facilitating circuit layout. Alternatively, an insulating layer can be added between the first circuit board 131 and the second circuit board 132 to prevent direct contact between the parts on the two circuit boards used for electrical signal transmission, thus avoiding short circuits and other problems.

[0063] Please continue reading. Figures 2 to 4 In some embodiments, along the radial direction of the motor axis, the first circuit board 131 is located on the side of the second circuit board 132 opposite to the motor axis. That is, the drive circuit on the second circuit board 132 is positioned close to the motor 110. Since the drive circuit needs to be electrically connected to the motor 110, their close proximity reduces the distance required for electrical connection; especially when using ribbon cables to achieve this connection, the cable length can be reduced, which not only facilitates wiring but also reduces the risk of messy wiring. Simultaneously, the power circuit on the first circuit board 131 can be positioned away from the motor 110. Since the power circuit needs to be connected to an external power source to ensure power supply, its placement on the side opposite to the motor 110 provides ample external space; furthermore, since some electronic components in the power circuit are relatively large, this arrangement minimizes the space occupied by these components for mounting the motor 110.

[0064] Please continue reading. Figures 2 to 4 In some embodiments, the power supply circuit includes at least a capacitor element 133, which is disposed on the side of the first circuit board 131 away from the second circuit board 132.

[0065] Understandably, since capacitor 133 primarily generates a rotating magnetic field by providing an additional phase difference, ensuring smooth motor startup and stable operation; furthermore, capacitor 133 can also be used for short-term energy storage and buffering. Therefore, capacitor 133 is typically designed to be large to meet the high capacity, high power, and high voltage requirements of motor startup and operation. This results in capacitor 133 requiring significant assembly space during assembly. Therefore, capacitor 133 is positioned on the side of the first circuit board 131 facing away from the second circuit board 132, i.e., on the side facing away from the motor 110, reducing the assembly space occupied by the motor 110.

[0066] Please see Figures 4 to 6 In practical use, the motor 110 includes a motor body 111 and a mounting housing 112. The mounting housing 112 surrounds a motor cavity 1101, and the motor body 111 is located within the motor cavity 1101 to protect the motor body 111. The mounting housing 112 also facilitates connection with other structures. For example, when the motor pump needs to be mounted on the suspension body, it is fixed to the suspension body using the mounting housing 112. One end of the motor shaft extends out of the motor cavity 1101 away from the end of the control module 140 and is connected to the pump 120, thereby driving the pump 120 to operate. The pump 120 includes a pump shaft and a transmission component connected to the pump shaft. The motor shaft can be connected to the pump shaft via a coupling to drive the transmission component; of course, the pump 120 can also be directly connected to the motor 110 via the motor shaft to drive the pump component. The pump 120 can be a gear pump, a screw pump, etc., which are only examples here.

[0067] The assembly housing 112 has a second accommodating space 1102 on its outer periphery, and the drive module 130 is disposed in the second accommodating space 1102. That is to say, the drive module 130 and the motor body 111 are both integrated and assembled on the assembly housing 112. At this time, because the aforementioned capacitor element 133 is disposed on the side of the first circuit board 131 away from the second circuit board 132, the space occupied by the assembly housing 112 along the radial direction of the motor axis can be reduced, thereby ensuring that the size of the motor cavity 1101 is relatively large, which is conducive to the assembly of the motor body 111.

[0068] Among them, the control module 140 is a control board 141, which is equipped with multiple electronic components to define the main control circuit. The main control circuit is electrically connected to the drive circuit and the power supply circuit.

[0069] Please see Figures 6 to 8In some embodiments, the aforementioned second circuit board 132 and control board 141 are electrically connected via a first connector 151. The first connector 151 includes a first plug-in 1511 and a first plug socket 1512 that can be plugged into each other. One of the first plug-in 1511 and the first plug socket 1512 is located on the second circuit board 132, and the other is located on the control board 141, to electrically connect the control board 141 and the second circuit board 132. That is, by utilizing the quick-connection method of the first plug-in 1511 and the first plug socket 1512, the electrical signal transmission between the second circuit board 132 and the control board 141 is satisfied, making operation faster and more convenient, and facilitating quick disassembly and subsequent maintenance. Furthermore, this method eliminates wiring, resulting in a simpler overall structure and improving the problem of messy wiring. For example, the first plug-in 1511 can be located on the second circuit board 132, and the first plug socket 1512 can be located on the control board 141. Conversely, the first connector 1511 is located on the control board 141, and the first connector 1512 is located on the second circuit board 132.

[0070] The first connector 1511 and the first socket 1512 can be connected by a blade, insert, or other flexible insertion method. Alternatively, they can be connected by a terminal and a port. This is merely an example.

[0071] Alternatively, the second circuit board 132 is electrically connected to the control board 141 via wires, with the two ends of the wires being electrically connected to the second circuit board 132 and the control board 141 respectively. The connection method between the wires and the second circuit board 132 and the control board 141 can be through plug-in terminals, direct soldering, etc.

[0072] The first circuit board 131 and the second circuit board 132 can also be electrically connected by wires, or they can be connected by inserting with a blade or other means, as long as the electrical connection between them can be satisfied.

[0073] In some embodiments, the first circuit board 131 and the second circuit board 132 are electrically connected via a fourth connector 154. The fourth connector 154 includes a fourth connector 1541 and a fourth connector 1542 that are mutually plugged into each other. One of the fourth connector 1541 and the fourth connector 1542 is located on the first circuit board 131, and the other is located on the second circuit board 132, so as to electrically connect the second circuit board 132 and the first circuit board 131. For example, the fourth connector 1541 can be located on the first circuit board 131, and the fourth connector 1542 can be located on the second circuit board 132; or vice versa.

[0074] Please see Figures 2 to 4In some embodiments, the electric pump further includes a sensor module 160. Each motor 110 is equipped with a corresponding sensor module 160, which is located on both sides of the control module 140 along the motor shaft axis and electrically connected to the control module 140. It is understood that the sensor module 160 is used to detect the operating performance of the motor 110 and the pump 120, such as the motor rotation, the temperature inside the motor body 111, and the oil pressure of the pump 120. The sensor module 160 can transmit the detected signals to the control module 140, which analyzes and processes them before issuing appropriate commands. For example, the control module 140 can issue commands to the drive circuit on the second circuit board 132 based on the detected motor shaft rotation signal, thereby controlling the motor body 111 to adjust its operating conditions.

[0075] The control module 140 is a control board 141. The control board 141 has multiple electronic components that collectively define the main control circuit, which is electrically connected to the drive circuit and power supply circuit. The sensor module 160 can be connected to the control board 141 via a ribbon cable, soldered to the control board 141 with wires, or electrically connected to the control board 141 via plug-in terminals. The specific structure of the sensor module 160 will be described later; this is only an example.

[0076] Please see Figure 4 , Figure 7 and Figure 8 In some embodiments, the sensor module 160 includes a position sensor 161, which is located at the end of the motor 110 away from the pump 120 and is electrically connected to the control module 140. The position sensor 161 is used to detect the rotation of the motor, thereby obtaining the rotational speed of the motor body 111. The position sensor 161 includes a detection body and a sensor circuit board 1611 connected to the detection body, which is electrically connected to the control board 141. That is, the detection body is mainly used to detect the rotation, and then transmits the detection signal to the sensor circuit board 1611. The sensor circuit board 1611 then transmits the detection signal to the control board 141 for processing and analysis by the main control circuit. The main control circuit then sends a corresponding command to the drive circuit on the second circuit board 132, which controls the adjustment of the motor body 111. Of course, the control board 141 also has a data acquisition circuit, which is electrically connected to the sensor circuit board 1611 and to the main control circuit. The acquisition circuit acquires the detection signal transmitted by the sensor circuit board 1611 and sends it to the main control circuit.

[0077] In some embodiments, the sensor circuit board 1611 and the control module 140 are functionally integrated, and in this case, the detection subject will be directly connected to the control module 140.

[0078] Please continue reading. Figure 4 , Figure 7 and Figure 8 In some embodiments, the sensor circuit board 1611 is electrically connected to the control board 141 via a second connector 152. The second connector 152 includes a second plug 1521 and a second plug socket 1522 that can be plugged into each other. One of the second plug 1521 and the second plug socket 1522 is located on the sensor circuit board 1611, and the other is located on the control board 141, to electrically connect the control board 141 and the sensor circuit board 1611. The method of electrically connecting the sensor circuit board 1611 and the control board 141 using the second connector 152 and the corresponding technical effects are basically the same as the method of electrically connecting the control board 141 and the second circuit board 132 using the first connector 151 and the corresponding technical effects, and therefore will not be described again here.

[0079] The second connector 1521 can be located on the sensor circuit board 1611, and the second connector 1522 can be located on the control board 141; or vice versa.

[0080] In other embodiments, the sensor circuit board 1611 can also be directly connected to the control board 141 via a ribbon cable. Both ends of the ribbon cable can be connected to connectors, and both the sensor circuit board 1611 and the control board 141 have connector ports for the connectors to be inserted. Alternatively, the sensor circuit board 1611 can be electrically connected to the control board 141 via wires, with the two ends of the wires soldered to both the sensor circuit board 1611 and the control board 141 respectively. This is merely an example and is sufficient to ensure electrical connection between the sensor circuit board 1611 and the control board 141.

[0081] like Figure 7 and Figure 8 As shown, in some embodiments, the sensor circuit board 1611 and the control board 141 are arranged opposite to each other and spaced apart along the motor shaft axis. This arrangement is equivalent to setting the sensor circuit board 1611 and the control board 141 in the same direction and allowing them to be arranged in parallel, which facilitates the insertion and engagement through the aforementioned second connector 152, thereby improving the alignment accuracy of the second connector 1521 and the second connector 1522 and ensuring the reliability of the electrical connection.

[0082] like Figure 4 and Figure 9As shown, in some embodiments, the aforementioned assembly housing 112 has an end plate 1121 at one end axially opposite to the pump 120 along the motor shaft, and the sensor circuit board 1611 is connected to the end plate 1121. Specifically, the end plate 1121 has a mounting position for mounting the sensor circuit board 1611, which facilitates a secure connection between the sensor circuit board 1611 and the end plate 1121, thus providing support for the sensor circuit board 1611. The sensor circuit board 1611 can be fixed to the end plate 1121 with screws. In other words, the end plate 1121 not only provides a mounting base for the sensor circuit board 1611, but also helps to separate the motor body 111 from the sensor circuit board 1611, protecting the sensor circuit board 1611 from interference from other structures and ensuring stable operation.

[0083] like Figure 4 and Figure 9 As shown, in some embodiments, a retaining platform 1122 protrudes from the end plate 1121 along the motor shaft axis, and the retaining platform 1122 surrounds the outer periphery of the second connector 152. Taking the second plug 1521 in the second connector 152 being located on the sensor circuit board 1611 as an example, the retaining platform 1122 surrounds the outer periphery of the second plug 1521. This arrangement serves to protect the second plug 1521; and when the second plug 1521 and the second plug socket 1522 are mated, it is equivalent to the retaining platform 1122 surrounding the outer periphery of the second connector 152, reducing the interference of the second connector 152 from other structures and ensuring the stability of the mating.

[0084] like Figure 4 and Figure 9 As shown, the enclosure platform 1122 further includes a notch 1123 radially along the motor shaft. The sensor circuit board 1611 has a connecting arm 1612, which passes through the notch 1123 and is fixed to the end plate 1121. In other words, by using the connecting arm 1612 extending out of the notch 1123 to connect with the end plate 1121, the connection stability of the sensor circuit board 1611 relative to the end plate 1121 is improved, especially regarding the stability at the location of the second connector 152, ensuring that the sensor circuit board 1611 will not warp or shake due to the insertion action. In actual use, the second connector 1521 is located at a lower position on the sensor circuit board 1611, and multiple round holes for screw fixing are also provided at a higher position on the sensor circuit board 1611 to ensure a reliable connection between the sensor circuit board 1611 and the end plate 1121.

[0085] like Figure 4 and Figure 9As shown, in some embodiments, the sensor module 160 further includes a temperature sensor 162, which is arranged spaced apart from the position sensor 161. The temperature sensor 162 is also located at the end of the motor 110 away from the pump 120 and is electrically connected to the control module 140. The temperature sensor 162 is used to detect the internal temperature of the motor body 111 to prevent the motor body 111 from overheating. In actual use, the motor 110 also includes a heat dissipation structure for cooling the motor body 111. The temperature signal detected by the temperature sensor 162 is acquired by the acquisition circuit on the control board 141 and transmitted to the main control circuit for processing and analysis. If the detected temperature is greater than a 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.

[0086] Among them, such as Figure 9 As shown, temperature sensors 162 can be spaced above position sensors 161.

[0087] like Figure 9 As shown, in some embodiments, the temperature sensor 162 has a temperature signal line 1621, which is directly electrically connected to the control module 140. It is understood that the temperature sensor 162 includes a detection terminal and a temperature signal line 1621 connected to the detection terminal. The detection terminal is connected to the motor body 111, and the temperature signal line 1621 can transmit the detection signal from the detection terminal to the main control circuit of the control board 141 for analysis and processing. Using the temperature signal line 1621 to directly transmit the signal to the control board 141 reduces interference during transmission.

[0088] Alternatively, the sensor circuit board 1611 is equipped with a temperature signal transmission circuit, and the temperature signal line 1621 of the temperature sensor 162 is electrically connected to the control module 140 through the temperature signal transmission circuit. That is, the temperature signal line 1621 can be first connected to the sensor circuit board 1611, and then the signal is transmitted via the second connector 152 between the sensor circuit board 1611 and the control board 141. This arrangement can reduce the length of the temperature signal line 1621 and improve the problem of messy wiring. Specifically, one end of the temperature signal transmission circuit on the sensor circuit board 1611 is electrically connected to the temperature signal line 1621, and the other end is electrically connected to the second connector 1521 in the second connector 152.

[0089] The temperature signal line 1621 can be directly soldered to the corresponding position on the sensor circuit board 1611 and the temperature signal transmission circuit. Alternatively, the sensor circuit board 1611 is equipped with a signal transmitter 163, which has a plug-in port. The end of the signal transmission line of the temperature sensor 162 is connected to a mating plug, which is then plugged into the plug-in port. In other words, the temperature signal line 1621 of the temperature sensor 162 can also be quickly attached and detached from the sensor circuit board 1611 via the plug-in connection method, which is not only convenient to operate but also provides a more stable connection.

[0090] Please see Figure 7 , Figure 8 and Figure 10 In some embodiments, the sensor module 160 further includes a pressure sensor 164, which is located near the pump 120 and electrically connected to the control module 140. Understandably, the pressure sensor 164 is used to detect the oil pressure of the pump 120 and transmits the detection signal to the control module 140 (i.e., control board 141). After analyzing and processing the detection signal, the main control circuit on the control board 141 controls the operation of the motor body 111 through the drive circuit on the second circuit board 132 to adjust the power, speed, and direction of the pump 120.

[0091] In this embodiment, the pressure sensor 164 is electrically connected to the control module 140 via the drive module 130. Specifically, the drive module 130 includes a second circuit board 132 with a drive circuit. The second circuit board 132 has a pressure signal transmission circuit. The pressure sensor 164 is electrically connected to the second circuit board 132 and is electrically connected to the control module 140 via the pressure signal transmission circuit. That is, the detection signal from the pressure sensor 164 is transmitted to the pressure signal transmission circuit, and then transmitted to the control board 141 via the pressure signal transmission circuit and the first connector 151, where it is processed and analyzed by the main control circuit.

[0092] In related technologies, since pressure sensors are used to detect the oil pressure of pumps, they need to be placed close to the pump, resulting in a large gap between the pressure sensor and the control board. If a ribbon cable is used for direct connection, the cable will be too long and may interfere with other structures; furthermore, additional wiring structures are needed for cable management, increasing manufacturing processes and structural complexity. Therefore, in this embodiment, the second circuit board 132 is used as the signal relay between the pressure sensor 164 and the control board 141, eliminating the need for a long ribbon cable and reducing interference with other structures.

[0093] Please see Figures 10 to 12In some embodiments, the pressure sensor 164 includes a pressure detection body 1641 and a pressure circuit board 1642 connected to the pressure detection body 1641. The pressure circuit board 1642 is electrically connected to the drive module 130, specifically, to the second circuit board 132 in the drive module 130. The pressure circuit board 1642 is provided with pressure points adapted to the pressure detection body 1641. The pressure points change under the action of the pressure detection body 1641, thereby causing the pressure circuit board 1642 to transmit the detection signal to the second circuit board 132, and then to the main control circuit on the control board 141 via the aforementioned first connector 151.

[0094] In some embodiments, the pressure circuit board 1642 is electrically connected to the second circuit board 132 via a third connector 153. The third connector 153 includes a third connector 1531 and a third connector socket 1532 that are mutually mated and inserted into each other. One of the third connector 1531 and the third connector socket 1532 is located on the pressure circuit board 1642, and the other is located on the control board 141, so as to electrically connect the control board 141 and the pressure circuit board 1642. For example, the third connector socket 1532 is located on the second circuit board 132, and the third connector 1531 is located on the pressure circuit board 1642.

[0095] Please continue reading. Figures 10 to 12 In some embodiments, the pressure sensor 164 further includes a sensor bracket 1643, on which the aforementioned pressure circuit board 1642 is disposed. The sensor bracket 1643 is connected to the pump 120. The sensor bracket 1643 has a mounting groove, in which at least a portion of the pressure circuit board 1642 is disposed and can be fastened with screws. Furthermore, the screws can simultaneously connect the sensor bracket 1643, the pressure circuit board 1642, and the mounting positions on the pump 120, facilitating assembly. In this case, to improve the reliability of the connection between the pressure circuit board 1642 and the sensor bracket 1643, the pressure circuit board 1642 can be embedded within the mounting groove.

[0096] Meanwhile, the sensor bracket 1643 is provided with a wire hole, through which one end of the pressure signal connection wire 1648 passes for electrical connection with the pressure circuit board 1642. The sensor bracket 1643 is also provided with a wiring cavity 1644 to facilitate the wiring arrangement of the pressure signal connection wire 1648. The wiring cavity 1644 can be a recessed structure in the sensor bracket 1643 or a hole structure inside the sensor bracket 1643.

[0097] The sensor bracket 1643 has a mounting protrusion 1645, which surrounds an insertion cavity 1646. A rigid pin 1647 is located within the insertion cavity 1646. The insertion cavity 1646 communicates with the aforementioned wiring cavity 1644. One end of the pressure signal connecting wire 1648, facing away from the pressure detection body 1641, passes through the mounting protrusion 1645 and connects to the rigid pin 1647. At this time, the mounting protrusion 1645 and the rigid pin 1647 together define the aforementioned third connector 1531. The third connector 1532 is a block-shaped structure protruding from the second circuit board 132 towards the motor shaft and has a socket. The rigid pin 1647 is inserted into the socket to achieve electrical connection.

[0098] Understandably, the mounting protrusion 1645 serves to protect the internal rigid pin 1647, preventing it from being bent by impacts from other structures and ensuring the mating accuracy with the third connector 1532. The pressure signal connection wires 1648 are provided in at least two, such as two or four, and each pressure signal connection wire 1648 is connected to a corresponding rigid pin 1647. Each rigid pin 1647 corresponds to a socket in the third connector 1532. The pressure signal connection wires 1648 can be integrally formed with their corresponding rigid pins 1647.

[0099] Please see Figure 2 , Figure 7 and Figure 8 In some embodiments, each electric pump assembly 100 corresponds to a drive module 130. Two drive modules 130 are located on opposite sides of the control board 141 along the motor shaft axis and are both electrically connected to the control module 140. That is, each of the two drive modules 130 can be adapted to a motor 110 for controlling that motor 110. Because each electric pump assembly 100 corresponds to the vibration damping requirements of a single wheel, separating the two drive modules 130 facilitates independent and precise control of the corresponding motor 110. Furthermore, since the two drive modules 130 can share a single control module 140, the structure is further simplified, and the axial size of the electric pump along the motor shaft axis is reduced.

[0100] Each drive module 130 includes a first circuit board 131 with a power supply circuit and a second circuit board 132 with a drive circuit.

[0101] Please continue reading. Figure 2 , Figure 7 and Figure 8 In some embodiments, one of the two first circuit boards 131 is further provided with a filter circuit. For example, Figure 2The first circuit board 131 located on the left side has a filter circuit and a capacitor element 133, while the first circuit board 131 located on the right side only has a capacitor element 133. In actual use, the electric pump also includes a power input connector 171, which is electrically connected to the first circuit board 131. The power input through the power input connector 171 first passes through the filter circuit and then is split to the two second circuit boards 132, so as to provide power to the two motors 110 respectively.

[0102] like Figures 6 to 8 As shown, in some embodiments, the control module 140 protrudes radially from the drive module 130 along the motor shaft. The electric pump also includes a signal connector 172, which connects to the protruding portion of the control module 140. It is understood that the protruding design of the control module 140 provides ample space on the control board 141 for electrical connection with the signal connector 172, avoiding the need for additional assembly space. The signal connector 172 serves as a bridge for communication between the control module 140 and the outside world, enabling real-time transmission of control signals and feedback information, achieving precise and efficient control.

[0103] In related technologies, since signal connectors are often located on one side of the motor pump along the motor shaft, the motor pump requires a significant amount of space in the axial direction for the signal connector assembly. Furthermore, when the motor pump is installed on a shock absorber or suspension, interference with the signal connector assembly must be considered. Therefore, this application utilizes a control board 141 that protrudes radially from the two drive modules 130 along the motor shaft to relocate the signal connector 172 to a position located in or near the center of the motor pump, thereby reducing the space occupied in the axial direction.

[0104] like Figure 6 As shown, in some embodiments, the control board 141 has a plurality of spaced-apart sockets, and the signal connector 172 has a plurality of spaced-apart pins 1721, each pin 1721 being inserted into a corresponding socket. That is, by utilizing the insertion and mating method of the pins 1721 and the sockets, the signal connector 172 and the control board 141 can be quickly mated and mated.

[0105] Please see Figures 4 to 6 In some embodiments, the assembly housing 112 has a first receiving space 1103 at the end opposite to the pump 120, and a second receiving space 1102 on the outer periphery of the assembly housing 112. The control module 140 is disposed in the first receiving space 1103, and the drive module 130 is disposed in the second receiving space 1102. The two assembly housings 112 are connected at the first receiving space 1103. The electric pump also includes a first cover plate 181 and a second cover plate 182, which are spaced apart or adjacent along the motor shaft axis and are respectively connected to the outer periphery of one assembly housing 112 to block the second receiving space 1102.

[0106] In other words, the assembly housing 112 is used to integrate the motor 110, drive module 130, and control module 140. The first cover plate 181 is fitted to one of the assembly housings 112 to accommodate one set of drive modules 130, and the second cover plate 182 is fitted to the other assembly housing 112 to accommodate the other set of drive modules 130. The two first receiving spaces 1103 are connected to accommodate the control module 140. This arrangement effectively separates the two drive modules 130 into independent spaces. When one cover plate is opened, the other cover plate can be closed, reducing interference with the other drive module 130 and ensuring maintenance safety.

[0107] Each assembly housing 112 includes a U-shaped enclosure portion 1125 and an arc-shaped partition portion 1126 connecting the two horizontal sides of the enclosure portion 1125. The partition portion 1126 and the enclosure portion 1125 together form the aforementioned motor cavity 1101. The two horizontal sides of the U-shaped enclosure portion 1125 protrude radially from the partition portion 1126 along the motor shaft to form a second receiving space 1102, and the end of the enclosure portion 1125 facing away from the pump 120 along the motor shaft axially protrudes from the partition portion 1126 to form a first receiving space 1103. The first circuit board 131 and the second circuit board 132 in the aforementioned drive module 130 can both be fixed to the partition portion 1126 or the corresponding cover plate (i.e., the first cover plate 181 and the second cover plate 182).

[0108] Please continue reading. Figures 4 to 6 In some embodiments, the mounting housing 112 has a protrusion 1124 at one end opposite to the pump 120, radially toward the drive module 130 along the motor axis. The protrusion 1124 and the mounting housing 112 together define a first receiving space 1103. That is, based on the arrangement of the enclosure portion 1125, the enclosure portion 1125 has a protrusion 1124 at one end opposite to the pump 120, and the protrusion 1124 and the end of the enclosure portion 1125 together enclose the first receiving space 1103. It can be understood that the arrangement of the protrusion 1124 is equivalent to increasing the size of the first receiving space 1103 along the motor axis, giving it more space to assemble the control board 141, and increasing the number and space of electronic components that can be arranged on the control board 141 along the motor axis, thereby further reducing the axial size. Moreover, it is precisely because of the protrusion 1124 that the aforementioned control board 141 can protrude radially from the two sets of drive modules 130 along the motor shaft and connect to the signal connector 172.

[0109] Furthermore, the protrusions 1124 on the housing 112 separate the first cover 181 and the second cover 182, ensuring that the first cover 181 and the second cover 182 only need to cover their respective corresponding second receiving spaces 1102. Thus, when one of the first cover 181 and the second cover 182 is open, the drive module 130 within the corresponding second receiving space 1102 of the other is not exposed radially along the motor shaft, reducing assembly and maintenance interference. Simultaneously, even when both the first cover 181 and the second cover 182 are open, the two protrusions 1124 prevent the control board 141 from being completely exposed radially along the motor shaft, reducing interference with the control board 141.

[0110] like Figures 2 to 4 As shown, in some embodiments, one of the first cover plate 181 and the second cover plate 182 is provided with a clearance recess 1801 for accommodating a signal connector 172, which passes through a corresponding protrusion and is electrically connected to the control module 140. That is, the clearance recess 1801 can accommodate the signal connector 172, thereby reducing the space occupied by the signal connector 172 in the radial direction of the motor shaft. For example, the first cover plate 181 may be provided with a corresponding clearance recess 1801. Alternatively, the second cover plate 182 may be provided with a corresponding clearance recess 1801.

[0111] Both the first cover plate 181 and the second cover plate 182 have cavities for accommodating electronic components, with the cavity at the location of the capacitor element 133 being deeper, while the cavities at other locations are shallower. Simultaneously, the protrusion 1124 for connecting the signal connector 172 has a mounting hole through which the signal connector 172 passes for electrical connection with the control board 141. A sealing element is provided between the signal connector 172 and the mounting hole to ensure a tight seal at the connection.

[0112] Another embodiment of this application provides an active hydraulic suspension, including a shock absorber and the aforementioned motor pump, with the motor pump in fluid communication with the shock absorber. The motor pump 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 motor pump and shock absorber are connected.

[0113] 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.

[0114] 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.

[0115] The embodiments described above are merely illustrative of several implementation methods of this application, and while the descriptions are relatively specific and detailed, they should not be construed as limiting the scope of the patent application. It should be noted that those skilled in the art can make various modifications and improvements without departing from the concept of this application, and these all fall within the scope of protection of this application. Therefore, the patent protection scope of this application should be determined by the appended claims.

Claims

1. An electric pump, characterized in that: The system includes two sets of electric pump units, each set comprising a motor with a motor shaft and a pump connected to the motor. The pump is located at one end of the motor along the axial direction of the motor shaft. The two sets of electric pump units are connected at the ends opposite to their respective pumps. The electric pump also includes: A drive module is radially disposed on the outer periphery of the motor along the motor shaft. The drive module is provided with a power supply circuit and a drive circuit, which are electrically connected. The drive circuit is also electrically connected to the motor. The control module is axially disposed along the motor shaft at the end of the motor away from the pump and located between the two sets of motors. The control module is provided with a main control circuit electrically connected to the drive circuit.

2. The electric pump according to claim 1, characterized in that, The drive module includes a first circuit board and a second circuit board arranged radially along the motor shaft. The first circuit board is provided with the power supply circuit, and the second circuit board is provided with the drive circuit.

3. The electric pump according to claim 2, characterized in that, Along the radial direction of the motor shaft, the first circuit board is located on the side of the second circuit board opposite to the motor shaft; The power supply circuit includes at least a capacitor element, which is located on the side of the first circuit board away from the second circuit board.

4. The electric pump according to claim 1, characterized in that, The electric pump also includes a sensor module. Each motor is equipped with a corresponding sensor module, which is located on both sides of the control module along the motor shaft axis and is electrically connected to the control module.

5. The electric pump according to claim 4, characterized in that, The sensor module includes a position sensor and a temperature sensor, which are arranged at intervals and are both located at the end of the motor away from the pump. The position sensor and the temperature sensor are both electrically connected to the control module.

6. The electric pump according to claim 5, characterized in that, The position sensor includes a detection body and a sensor circuit board connected to the detection body, and the sensor circuit board is electrically connected to the control module; The temperature sensor has a temperature signal line, which is directly electrically connected to the control module; or, the sensor circuit board has a temperature signal transmission circuit, the temperature sensor has a temperature signal line, and the temperature signal line is electrically connected to the control module through the temperature signal transmission circuit.

7. The electric pump according to claim 5, characterized in that, The sensor module also includes a pressure sensor, which is located near the pump and is electrically connected to the control module through the drive module.

8. The electric pump according to claim 7, characterized in that, The drive module includes a second circuit board with a drive circuit. The second circuit board has a pressure signal transmission circuit. The pressure sensor is electrically connected to the second circuit board and is electrically connected to the control module through the pressure signal transmission circuit.

9. The electric pump according to any one of claims 1 to 8, characterized in that, Each of the electric pump units corresponds to one of the drive modules. The two drive modules are located on both sides of the control module along the axial direction of the motor shaft and are electrically connected to the control module.

10. The electric pump according to claim 9, characterized in that, Each drive module includes a first circuit board with the power supply circuit and a second circuit board with the drive circuit. One of the two first circuit boards has a filter circuit. The electric pump also includes a power input connector, which is connected to the circuit board with the filter circuit; and / or... The control module protrudes radially from the drive module along the motor shaft, and the electric pump also includes a signal connector, which is connected to the protruding portion of the control module.

11. The electric pump according to claim 9, characterized in that, The motor includes a motor body and an assembly housing, the assembly housing enclosing a motor cavity, and the motor body being disposed in the motor cavity; The assembly housing has a first accommodating space at the end opposite to the pump, a second accommodating space on the outer periphery of the assembly housing, a control module located in the first accommodating space, and a drive module located in the second accommodating space. The two assembly housings are connected at the first receiving space. The electric pump also includes a first cover plate and a second cover plate, which are spaced apart or adjacent to each other along the motor shaft axis and are respectively connected to the outer periphery of one of the assembly housings to seal the second receiving space.

12. The electric pump according to claim 11, characterized in that, At one end of the assembly housing opposite to the pump, a protrusion is provided radially toward the drive module along the motor shaft, and the protrusion and the assembly housing together define a first receiving space.

13. The electric pump according to claim 12, characterized in that, One of the first cover plate and the second cover plate is provided with a clearance recess for accommodating a signal connector, the signal connector passing through the corresponding protrusion and being electrically connected to the control module.

14. An active hydraulic suspension, characterized in that, The active hydraulic suspension includes: Vibration damper; The electric pump according to any one of claims 1 to 13, wherein the electric pump is in fluid communication with the vibration damper.

15. A car, characterized in that, The vehicle includes the active hydraulic suspension as described in claim 14.

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