Electric pump, active hydraulic suspension and automobile

Abstract

The invention 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] The present application relates to the field of vehicle technology, and in particular to an electric 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 the related art, an electric hydraulic pump is usually composed of a hydraulic pump, a motor and a motor controller, and these three are arranged along the axial direction of the motor shaft. Since the motor controller needs to integrate more electronic components, such as various electronic components for driving the motor to start and stop, for detecting the motor performance, and some electronic components themselves are large in size, the overall size of the electric hydraulic pump is large, and more assembly space is required. Moreover, precisely because of the integration of more electronic components, there is often signal interference between the various electronic components. Summary of the invention

[0004] Based on this, it is necessary to provide an electric pump that not only reduces the axial space occupied, but also separates the high and low voltage components in space, reduces signal interference, simplifies the structure while meeting normal use, meets the overall lightweight design of the electric pump, reduces the assembly space, and is more conducive to integration in smaller spaces.

[0005] An electric pump comprises two groups of electric pump groups, each group of the electric pump groups comprises a motor having a motor shaft and a pump connected to the motor shaft, the pump is arranged at one end of the motor along the axial direction of the motor shaft, and the two groups of the electric pump groups are connected at one end away from the respective pumps; the electric pump also comprises a drive module and a control module, the drive module is arranged on the outer peripheral side of the motor along the radial direction of the motor shaft, the drive module is provided with a power supply circuit and a drive circuit, the two are electrically connected, and the drive circuit is electrically connected to the motor; the control module is arranged at the end of the motor away from the pump along the axial direction of the motor shaft, and is located between the two motors, and the control module is provided with a main control circuit electrically connected to the drive circuit.

[0006] It can be understood that the separate arrangement of the drive module and the control module is equivalent to the dispersed arrangement of the various electronic components used to drive and control the motor. Compared with integrating them all in the space along the axial direction of the motor shaft, the arrangement of the present application, on the one hand, reduces the number of electronic components integrated at the end of the motor, thereby reducing the space occupied by the control module in the axial direction of the motor shaft, so as to reduce the axial size of the entire electric pump; on the other hand, it improves the space utilization rate of the outer peripheral side of the motor. At the same time, it is precisely because the drive module and the control module are arranged in different positions of the motor that the drive module and the control module can be separated from the structure, 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 the interference of the high-voltage electronic components to the low-voltage electronic components. At this time, there is no need to add other structures to meet the anti-interference requirements, and the size of the electric pump is further reduced.

[0007] In some embodiments, the driving module includes a first circuit board and a second circuit board radially stacked along the motor shaft, the first circuit board is provided with the power supply circuit, and the second circuit board is provided with the driving circuit.

[0008] That is to say, by utilizing the first circuit board and the second circuit board, the electronic components corresponding to the driving module are dispersed on the two circuit boards and arranged radially along the motor shaft, thereby further reducing the occupied space along the axial direction and making full use of the radial space.

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

[0010] Such a configuration enables the first circuit board to have sufficient external connection space and reduces the space occupied by the motor assembly by assembling the capacitor element.

[0011] In some embodiments, the electric pump further includes a sensor module, each of the motors is provided with the sensor module, and the sensor modules are arranged on both sides of the control module along the axial direction of the motor shaft, and are electrically connected to the control module.

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

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

[0014] That is to say, the position sensor and the temperature sensor are used to detect the rotation and temperature of the motor respectively, which is conducive to regulating the operation and heat dissipation of the motor.

[0015] In some embodiments, 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;

[0016] The temperature sensor has a temperature signal line, which is directly electrically connected to the control module; or, the sensor circuit board is provided with 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] That is to say, by utilizing the setting of the sensor circuit board to transmit the detection signals of the position sensor and the temperature sensor to the control module, the length of the temperature signal line can be shortened and the problem of line clutter can be improved.

[0018] In some of the embodiments, the sensor module further includes a pressure sensor, which is disposed close to the pump and is electrically connected to the control module via the drive module.

[0019] It can be understood that 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 transferred through the drive module to shorten the wiring length.

[0020] In some embodiments, the driving module includes a second circuit board provided with a driving circuit, the second circuit board is provided with 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.

[0021] That is to say, the detection signal of the pressure sensor can be directly transmitted to the pressure signal transmission circuit on the second circuit board, and the signal transmission is realized through the electrical connection between the second circuit board and the control module, thereby further reducing the wiring length.

[0022] In some embodiments, each of the electric pump groups corresponds to one driving module, and two groups of driving modules are arranged 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] It can be understood that the two sets of drive modules can be adapted to one motor respectively, which is conducive to independent and precise control of the operation of the corresponding motors.

[0024] In some embodiments, each group of the drive modules includes a first circuit board provided with the power supply circuit and a second circuit board provided with the drive circuit, one of the two first circuit boards is provided with a filter circuit, the electric pump also includes a power input connector, the power input connector is connected to the one provided 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, and the signal connector is connected to the protruding part of the control module.

[0025] That is to say, the power input through the power input connector first passes through the filter circuit and then is divided into two second circuit boards, so as to provide power to the two motors respectively. At the same time, due to the protruding setting of the control module, there is spare space on the control board to electrically connect with the signal connector, avoiding taking up extra assembly space.

[0026] In some embodiments, the motor includes a motor body and an assembly shell, the assembly shell is surrounded by a motor cavity, and the motor body is arranged in the motor cavity; wherein, a first accommodating space is provided at the end of the assembly shell facing away from the pump, and a second accommodating space is provided on the outer peripheral side of the assembly shell, the control module is arranged in the first accommodating space, and the drive module is arranged in the second accommodating space; the two assembly shells are connected at the first accommodating space, and the electric pump also includes a first cover plate and a second cover plate, which are axially spaced or adjacent to each other along the motor shaft, and are respectively connected to the outer peripheral side of one of the assembly shells for sealing the second accommodating space.

[0027] This arrangement is equivalent to installing two sets of drive modules in independent spaces. When one cover is opened, the other cover can be in a closed state, reducing interference with the other drive module and ensuring maintenance safety.

[0028] In some embodiments, the assembly shell is provided with a convex portion at an end away from the pump and radially along the motor shaft toward the driving module, and the convex portion and the assembly shell together define a first accommodating space.

[0029] It can be understood that, due to the arrangement of the convex portion of the assembly housing, the first cover plate and the second cover plate can be separated, so that the first cover plate and the second cover plate only need to cover the positions of the second accommodating spaces respectively corresponding to each other; and, such an arrangement also prevents the control board from being completely exposed along the radial direction of the motor shaft. In this way, assembly interference and maintenance interference can be reduced.

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

[0031] That is to say, the signal connector can be accommodated by the arrangement of the avoidance recess, thereby reducing the space occupied by the signal connector in the radial direction of the motor shaft.

[0032] The present application also provides an active hydraulic suspension, comprising a shock absorber and the above-mentioned electric pump, wherein the electric pump is in fluid communication with the shock absorber.

[0033] The present application also provides a car, comprising the above-mentioned active hydraulic suspension. BRIEF DESCRIPTION OF THE DRAWINGS

[0034] In order to more clearly illustrate the technical solutions in the embodiments of the present application or the conventional technology, the drawings required for use in the embodiments or the conventional technology descriptions are briefly introduced below. Obviously, the drawings described below are only some embodiments of the present application. For ordinary technicians in this field, other drawings can be obtained based on these drawings without creative work.

[0035] Figure 1 A front view of an electric pump provided in one embodiment of the present application;

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

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

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

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

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

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

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

[0043] Fig. 9 A first partial schematic diagram of an electric pump provided in one embodiment of the present application;

[0044] Fig.10 A partial diagram of a pressure sensor and a driving module in an electric pump provided in an embodiment of the present application;

[0045] Fig.11A schematic diagram of a pressure sensor in an electric pump provided in an embodiment of the present application;

[0046] Fig.12 An exploded view of a pressure sensor in an electric pump provided in one embodiment of the present application.

[0047] Figure numerals: 100, electric pump group; 110, motor; 111, motor body; 112, assembly shell; 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 accommodating space; 1103, first accommodating space; 1121, end plate ; 1122, enclosure platform; 1123, notch; 1124, convex part; 1125, enclosure part; 1126, barrier part; 1511, first plug connector; 1512, first socket; 1521, second plug connector; 1522, second socket; 1531, third plug connector; 1532, third socket; 1541, fourth plug connector; 1542, fourth 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, hard pin; 1648, pressure signal connecting wire; 1721, pin; 1801, avoidance recess. DETAILED DESCRIPTION

[0048] 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.

[0049] It should be noted that when a component is referred to as being "fixed to" or "disposed on" another component, it may be directly on the other component or there may also be a central component. When a component is considered to be "connected to" another component, it may be directly connected to the other component or there may be a central component 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.

[0050] 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.

[0051] 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.

[0052] 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.

[0053] In the related art, the electric hydraulic pump 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 electronic components to meet the operation control of the motor. The motor controller mainly includes a control part and a drive part. As the core of the motor controller, the control part is mainly responsible for processing input signals, executing control algorithms, outputting control instructions, etc. The drive part is mainly used to convert the control signal into the power required by the motor to drive the motor to operate. The drive part usually includes various power electronic components for high voltage and high power. Therefore, there is usually interference between the high-voltage circuit and the low-voltage circuit in the drive part and the control part. At the same time, some electronic components in the motor controller are large in size, and need to occupy a large assembly space during assembly, which will result in a larger overall size, which is not conducive to assembly, especially integrated assembly in a small space.

[0054] In view of this, an embodiment of the present application provides an electric pump, which not only reduces the axial space occupied, but also separates the high and low voltage electronic components in space, reduces signal interference, simplifies the structure on the basis of meeting normal use, meets the overall lightweight design of the electric pump, reduces the assembly space, and is more conducive to integration in a smaller space. The electric pump is described in detail below.

[0055] See also Figures 1 to 4 In some embodiments, the electric pump includes two groups of electric pump groups 100, each group of electric pump groups 100 includes a motor 110 having a motor shaft and a pump 120 connected to the motor shaft, the pump 120 is arranged at one end of the motor 110 along the axial direction of the motor shaft, and the two groups of electric pump groups 100 are connected at one end away from the respective pumps 120. Each group of electric pump groups 100 can correspond to a shock absorber. Among them, the electric pump also includes a drive module 130 and a control module 140. The drive module 130 is arranged on the outer peripheral side of the motor 110 along the radial direction of the motor shaft. The drive module 130 is provided with a power supply circuit and a drive circuit, the two are electrically connected, and the drive circuit is electrically connected to the motor 110. The control module 140 is arranged at the end of the motor 110 away from the pump 120 along the axial direction of the motor shaft, and is located between the two motors 110, and the control module 140 is provided with a main control circuit electrically connected to the drive circuit.

[0056] like Figure 6 As shown, the motor 110 at least includes 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 peripheral side of the rotor assembly, and the stator assembly is provided with a lead to electrically connect with the aforementioned drive module 130 and control module 140, thereby realizing power output and control of the motor body 111.

[0057] In the electric pump provided by the present 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. Specifically, the electronic components used to process input signals, execute control algorithms, output control instructions, etc., and the electronic components used to convert control signals into the power required by the motor to drive the motor body 111 to operate are dispersedly arranged. Compared with integrating both of them in the space along the axial direction of the motor shaft, the present application promotes the drive module 130 and the control module 140 to be arranged at the end and the outer peripheral side of the motor 110 respectively. Such a setting, on the one hand, reduces the number of electronic components integrated at the end of the motor 110, and then the space occupied in the axial direction of the motor shaft, so as to reduce the axial size of the entire electric pump; on the other hand, it improves the space utilization rate of the outer peripheral side of the motor 110. At the same time, precisely because the drive module 130 and the control module 140 are arranged at different positions of the motor 110, the drive module 130 and the control module 140 can be separated structurally, thereby 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 on the low-voltage electronic components.

[0058] In addition, since the driving module 130 includes a power circuit and a driving circuit, the electronic components forming the power circuit are usually significantly larger than other electronic components. Therefore, arranging the driving module 130 on the outer peripheral side of the motor 110 is equivalent to transferring the larger electronic components to the outer peripheral side of the motor 110, and the electronic components retained at the end of the motor 110 are all small in size, thereby significantly reducing the size in the axial direction.

[0059] In some specific embodiments, taking the cross section of the motor 110 as a square or quasi-square as an example, the motor 110 has four sides, and the aforementioned driving module 130 is disposed at any one of the sides. Figure 4 In the embodiment, the driving module 130 is disposed on the upper side of the motor 110 along the vertical direction. The square-like shape refers to a shape similar to a square or a shape having the characteristics of a square.

[0060] See also Figures 2 to 4 In some embodiments, the driving module 130 includes a first circuit board 131 and a second circuit board 132 which are radially stacked along the motor shaft. The first circuit board 131 is provided with a power circuit, and the second circuit board 132 is provided with a driving circuit.

[0061] That is to say, by utilizing the arrangement of the first circuit board 131 and the second circuit board 132, the electronic components corresponding to the drive module 130 are dispersed on the two circuit boards, and the number of electronic components corresponding to each circuit board is reduced, which leads to a corresponding reduction in the size of the corresponding circuit board. Moreover, the layout of the first circuit board 131 and the second circuit board 132 along the radial direction of the motor shaft allows a plurality of electronic components to be arranged in the radial direction of the motor shaft, thereby reducing the occupied space along the axial direction of the motor shaft. At the same time, since the first circuit board 131 is provided with a power supply circuit and the second circuit board 132 is provided with a drive circuit, it is equivalent to arranging the electronic components used to provide power or an external power supply, and the electronic components used to convert the control signal into the power required by the motor to drive the motor body 111 in a modular and dispersed manner, thereby reducing interference between the various electronic components.

[0062] The first circuit board 131 and the second circuit board 132 are arranged radially along the motor shaft to ensure a safe distance between them and avoid mutual interference of electronic components as much as possible; and the distance between them can also be used to accommodate some electronic components, which is beneficial to circuit layout. Of course, an insulating layer can also be added between the first circuit board 131 and the second circuit board 132 to avoid direct contact between the parts of the two circuit boards used for electrical signal transmission and cause problems such as short circuits.

[0063] Please continue reading Figures 2 to 4 In some embodiments, along the radial direction of the motor shaft, the first circuit board 131 is located on the side of the second circuit board 132 away from the motor shaft. That is to say, the drive circuit on the second circuit board 132 is arranged close to the motor 110. Since the drive circuit needs to be electrically connected to the motor 110, the close arrangement of the two can reduce the distance for achieving electrical connection; especially when a cable is used to meet the electrical connection between the two, the length of the cable can be reduced, which is not only conducive to routing, but also reduces the risk of messy routing. At the same time, the power circuit on the first circuit board 131 can be arranged away from the motor 110. Since the power 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 110 so that it has sufficient external space; and since some electronic components in the power circuit are large in size, such an arrangement makes it possible for these electronic components to not occupy as much assembly space as possible for installing the motor 110.

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

[0065] It is understandable that, since the capacitor element 133 mainly generates 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 133 can also be used for short-term energy storage and buffering. Therefore, the size of the capacitor element 133 is usually set larger to meet the high capacity, high power, high voltage requirements during motor startup and operation. This results in the capacitor element 133 needing to occupy a larger assembly space when assembled. Therefore, the capacitor element 133 is arranged on the side of the first circuit board 131 away from the second circuit board 132, that is, on the side away from the motor 110, to reduce the assembly space occupied by the motor 110.

[0066] See also Figures 4 to 6 In actual use, the motor 110 includes a motor body 111 and an assembly shell 112, the assembly shell 112 is surrounded by a motor cavity 1101, and the motor body 111 is arranged in the motor cavity 1101 to protect the motor body 111. The assembly shell 112 is also convenient for connection with other structures. For example, when the motor pump needs to be assembled on the suspension body, the assembly shell 112 is used to fix it with the suspension body. 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. Among them, 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 through a coupling to drive the transmission component; of course, the pump 120 can also be directly connected to the motor 110 through the motor shaft to drive the pump component. The pump 120 can be a gear pump, a screw pump, etc., which is only used as an example here.

[0067] Among them, the outer peripheral side of the assembly housing 112 is provided with a second accommodating space 1102, and the driving module 130 is arranged in the second accommodating space 1102. That is to say, the driving module 130 and the motor body 111 are both integrated and assembled on the assembly housing 112. At this time, it is precisely because the aforementioned capacitor element 133 is arranged on the side of the first circuit board 131 away from the second circuit board 132 that can reduce the occupation of the radial space of the assembly housing 112 along the motor shaft, 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] The control module 140 is a control board 141 , on which a plurality of electronic components are disposed, so as to define a main control circuit together with the plurality of electronic components, and the main control circuit is electrically connected to the driving circuit and the power supply circuit.

[0069] See also Figures 6 to 8In some embodiments, the aforementioned second circuit board 132 is electrically connected to the control board 141 through the first connector 151. The first connector 151 includes a first plug connector 1511 and a first socket 1512 that can be plugged and matched with each other. One of the first plug connector 1511 and the first socket 1512 is provided on the second circuit board 132, and the other is provided on the control board 141, so as to electrically connect the control board 141 and the second circuit board 132. In other words, by using the quick plug-in method of the first plug connector 1511 and the first socket 1512, the electrical signal transmission between the second circuit board 132 and the control board 141 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 line routing, etc., which not only simplifies the overall structure, but also improves the problem of line clutter. For example, the first plug connector 1511 can be provided on the second circuit board 132, and the first socket 1512 can be provided on the control board 141. On the contrary, the first plug connector 1511 is disposed on the control board 141 , and the first plug socket 1512 is disposed on the second circuit board 132 .

[0070] The first plug connector 1511 and the first socket 1512 may be plug-fitted with each other in the form of a plug blade, a plug sheet, or an elastic plug-fitted connection. Of course, it may also be plug-fitted with a plug terminal and a plug port. This is only an example.

[0071] Alternatively, the second circuit board 132 and the control board 141 are electrically connected via a wire, and both ends of the wire are electrically connected to the second circuit board 132 and the control board 141 respectively. The connection method between the wire and the second circuit board 132 and the control board 141 can be through plug-in terminals, direct welding, etc.

[0072] The first circuit board 131 and the second circuit board 132 may also be electrically connected via a wire, or plugged in by means of a plug blade, a plug sheet, etc., as long as the electrical connection between the two can be achieved.

[0073] In some embodiments, the first circuit board 131 and the second circuit board 132 are electrically connected through the fourth connector 154. The fourth connector 154 includes a fourth plug connector 1541 and a fourth plug socket 1542 that are plugged into each other. One of the fourth plug connector 1541 and the fourth plug socket 1542 is provided on the first circuit board 131, and the other is provided 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 plug connector 1541 can be provided on the first circuit board 131, and the fourth plug socket 1542 can be provided on the second circuit board 132; or vice versa.

[0074] See also Figures 2 to 4In some embodiments, the electric pump further includes a sensor module 160, each motor 110 is provided with a corresponding sensor module 160, and the sensor modules 160 are arranged on both sides of the control module 140 along the axial direction of the motor shaft, and are electrically connected to the control module 140. It can be understood that the sensor module 160 is used to detect the operating performance of the motor 110 and the pump 120, such as the rotation of the motor, the temperature in the motor body 111, the oil pressure of the pump 120, etc. The sensor module 160 can transmit the detection signal to the control module 140, and the control module 140 issues a corresponding instruction after analysis and processing. For example, the control module 140 can issue an instruction to the drive circuit on the second circuit board 132 according to the detection signal of the rotation of the motor shaft, and control the motor body 111 to adjust the operating condition through the drive circuit.

[0075] Among them, the control module 140 is a control board 141. The control board 141 is provided with a plurality of electronic components, so that a main control circuit is defined by the plurality of electronic components, and the main control circuit is electrically connected to the drive circuit and the power supply circuit. The sensor module 160 can be connected to the control board 141 by means of a wiring arrangement, or welded to the control board 141 by a wire, or electrically connected to the control board 141 by means of a plug-in matching method of a plug-in terminal. The specific structure of the sensor module 160 will be described later, and only an example is given here.

[0076] See also Figure 4 , Figure 7 and Figure 8 In some embodiments, the sensor module 160 includes a position sensor 161, which is disposed at one end of the motor 110 away from the pump 120, and the position sensor 161 is electrically connected to the control module 140. The position sensor 161 is used to detect the rotation of the motor, and then the rotation speed of the motor body 111 can be obtained. Among them, the position sensor 161 includes a detection body and a sensor circuit board 1611 connected to the detection body, and the sensor circuit board 1611 is electrically connected to the control board 141. In other words, the detection body is mainly used to detect the rotation, and then the detection signal is transmitted to the sensor circuit board 1611, and the detection signal is transmitted to the control board 141 via the sensor circuit board 1611, for the main control circuit to process and analyze, and then the main control circuit sends a corresponding instruction to the drive circuit on the second circuit board 132, and controls the motor body 111 to adjust via the drive circuit. Of course, the control board 141 is also provided with a collection circuit, and the collection circuit is electrically connected to the sensor circuit board 1611 and connected to the main control circuit. The acquisition circuit acquires the detection signal transmitted by the sensor circuit board 1611 and transmits it to the main control circuit.

[0077] In some embodiments, the sensor circuit board 1611 and the control module 140 are functionally integrated. In this case, the detection body 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 through the second connector 152. The second connector 152 includes a second plug connector 1521 and a second plug socket 1522 that can be plugged into each other. One of the second plug connector 1521 and the second plug socket 1522 is provided on the sensor circuit board 1611, and the other is provided on the control board 141, so as to electrically connect the control board 141 and the sensor circuit board 1611. Among them, the method of electrically connecting the sensor circuit board 1611 and the control board 141 using the second connector 152 and the corresponding technical effect 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 effect, so they are not repeated here.

[0079] The second plug connector 1521 may be disposed on the sensor circuit board 1611 , and the second plug socket 1522 may be disposed 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 by means of a flat cable. The two ends of the flat cable can also be connected with plug terminals respectively, and the sensor circuit board 1611 and the control board 141 are both provided with plug ports for plugging and matching the plug terminals. Of course, the sensor circuit board 1611 is electrically connected to the control board 141 through a wire, and the two ends of the wire are respectively welded to the sensor circuit board 1611 and the control board 141. As long as it can meet the electrical connection between the sensor circuit board 1611 and the control board 141, it is only used as an example here.

[0081] like Figure 7 and Figure 8 As shown, in some embodiments, along the axial direction of the motor shaft, the sensor circuit board 1611 and the control board 141 are arranged opposite and spaced apart. Such an arrangement is equivalent to arranging the sensor circuit board 1611 and the control board 141 in the same direction and in parallel, which is conducive to plugging and matching through the aforementioned second connector 152, so as to improve the alignment accuracy of the second plug connector 1521 and the second plug socket 1522 and ensure the reliability of the electrical connection.

[0082] like Figure 4 and Fig. 9As shown, in some embodiments, the aforementioned assembly housing 112 is provided with an end plate 1121 at one end axially away from the pump 120 along the motor shaft, and the sensor circuit board 1611 is connected to the end plate 1121. Specifically, a mounting position for mounting the sensor circuit board 1611 is provided on the end plate 1121, so as to facilitate the stable connection between the sensor circuit board 1611 and the end plate 1121, so as to support the sensor circuit board 1611. The sensor circuit board 1611 can be fixed to the end plate 1121 by screws. In other words, the provision of the end plate 1121 not only provides an installation base for the sensor circuit board 1611, but also helps to separate the motor body 111 from the sensor circuit board 1611, protect the sensor circuit board 1611 from interference from other structures, and ensure stable operation.

[0083] like Figure 4 and Fig. 9 As shown, in some embodiments, along the axial direction of the motor shaft, the end plate 1121 is provided with a blocking platform 1122, and the blocking platform 1122 is arranged around the outer peripheral side of the second connector 152. Taking the second plug connector 1521 in the second connector 152 as an example, which is arranged on the sensor circuit board 1611, the blocking platform 1122 is arranged around the outer peripheral side of the second plug connector 1521. Such a setting can protect the second plug connector 1521; and when the second plug connector 1521 is plugged and matched with the second socket 1522, it is equivalent to the blocking platform 1122 being arranged around the outer peripheral side of the second connector 152, reducing the interference of other structures on the second connector 152 and ensuring the plugging stability.

[0084] like Figure 4 and Fig. 9 As shown, further, the enclosure 1122 is provided with a notch 1123 along the radial direction of the motor shaft, and the sensor circuit board 1611 is provided with a connecting arm 1612, which is inserted into the notch 1123 and fixed to the end plate 1121. In other words, the connecting arm 1612 is extended out of the notch 1123 to connect with the end plate 1121, thereby improving the connection stability of the sensor circuit board 1611 relative to the end plate 1121, especially the stability at the position of the second connector 152, ensuring that the sensor circuit board 1611 will not be warped or shaken due to the plug-in effect during plug-in mating. In actual use, the second plug connector 1521 is provided at a lower position of the sensor circuit board 1611, and a plurality of round holes for screw fixing are also provided at an upper position of the sensor circuit board 1611 to ensure reliable connection between the sensor circuit board 1611 and the end plate 1121.

[0085] like Figure 4 and Fig. 9As shown, in some embodiments, the sensor module 160 also includes a temperature sensor 162, and the temperature sensor 162 is arranged at intervals from the position sensor 161. The temperature sensor 162 is also located at one 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 dissipating heat from the motor body 111. The temperature signal detected by the temperature sensor 162 is collected by the acquisition circuit on the control board 141 and then transmitted to the main control circuit for processing and analysis. If the detected temperature is greater than the preset value in the main control circuit, the main control circuit sends an instruction to the drive circuit to control the heat dissipation structure to start through the drive circuit to dissipate heat. This is only an example.

[0086] Among them, Fig. 9 As shown, the temperature sensor 162 may be spaced apart above the position sensor 161 .

[0087] like Fig. 9 As shown, in some embodiments, the temperature sensor 162 has a temperature signal line 1621, and the temperature signal line 1621 is directly electrically connected to the control module 140. It can be 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 of the detection terminal to the main control circuit of the control board 141, and the main control circuit analyzes and processes it. The temperature signal line 1621 is used to directly transmit the signal to the control board 141 to reduce interference in transmission.

[0088] Alternatively, the sensor circuit board 1611 is provided 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. In other words, the temperature signal line 1621 can be first connected to the sensor circuit board 1611, and then the signal is transmitted through the second connector 152 between the sensor circuit board 1611 and the control board 141. Such a setting can reduce the length of the temperature signal line 1621 and improve the problem of line clutter. Among them, 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 plug connector 1521 in the second connector 152.

[0089] Among them, the temperature signal line 1621 can be directly welded to the position of the sensor circuit board 1611 corresponding to the temperature signal transmission circuit. Alternatively, the sensor circuit board 1611 is provided with a signal transmitter 163, and the signal transmitter 163 is provided with a plug port. The end of the signal transmission line of the temperature sensor 162 is connected with a matching plug, and the matching plug is plugged and matched with the plug port. In other words, the temperature signal line 1621 of the temperature sensor 162 can also be quickly disassembled and assembled with the sensor circuit board 1611 by plugging the matching plug with the plug port, which is not only convenient to operate, but also more stable in connection.

[0090] See also Figure 7 , Figure 8 and Fig.10 In some embodiments, the sensor module 160 further includes a pressure sensor 164, which is disposed near the pump 120 and is electrically connected to the control module 140. It can be understood that the pressure sensor 164 is used to detect the oil pressure of the pump 120 and transmit the detection signal to the control module 140 (i.e., the control board 141). After the main control circuit on the control board 141 analyzes and processes the detection signal, it controls the operation of the motor body 111 through the drive circuit on the second circuit board 132 to adjust the power change, speed change, and direction change of the pump 120.

[0091] In this embodiment, the pressure sensor 164 is electrically connected to the control module 140 through the driving module 130. Specifically, the driving module 130 includes a second circuit board 132 provided with a driving circuit, the second circuit board 132 is provided with 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 through the pressure signal transmission circuit. That is, the detection signal of the pressure sensor 164 is transmitted to the pressure signal transmission circuit, and is transmitted to the control board 141 via the pressure signal transmission circuit and the first connector 151, and is processed and analyzed by the main control circuit.

[0092] In the related art, since the pressure sensor is used to detect the oil pressure of the pump, the pressure sensor needs to be set close to the pump, which results in a large distance between the pressure sensor and the control board. If the connection is directly made by means of a flat cable, the cable will be too long and may interfere with other structures; moreover, it is necessary to add a wiring structure to store the cable, which increases the manufacturing process and structural complexity. Therefore, in this embodiment, the second circuit board 132 is used as a signal transfer between the pressure sensor 164 and the control board 141, so there is no need to use a longer cable, which reduces interference with other structures.

[0093] See also 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 driving module 130, specifically, to the second circuit board 132 in the driving 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 prompting the pressure circuit board 1642 to transmit the detection signal to the second circuit board 132, and then transmit it 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 through the third connector 153. The third connector 153 includes a third plug connector 1531 and a third plug socket 1532 that are plugged into each other. One of the third plug connector 1531 and the third plug socket 1532 is provided on the pressure circuit board 1642, and the other is provided on the control board 141, so as to electrically connect the control board 141 and the pressure circuit board 1642. For example, the third plug socket 1532 is provided on the second circuit board 132, and the third plug connector 1531 is provided 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, and the aforementioned pressure circuit board 1642 is disposed on the sensor bracket 1643, and the sensor bracket 1643 is connected to the pump 120. The sensor bracket 1643 is provided with a mounting groove, and at least a portion of the pressure circuit board 1642 is disposed in the mounting groove and can be fastened with screws; and the screws can also simultaneously connect the sensor bracket 1643, the pressure circuit board 1642, and the mounting position on the pump 120, so as to facilitate assembly. At this time, in order to improve the connection reliability between the pressure circuit board 1642 and the sensor bracket 1643, the pressure circuit board 1642 can be embedded in the mounting groove.

[0096] At the same time, the sensor bracket 1643 is provided with a wire hole, and one end of the pressure signal connection wire 1648 is inserted through the wire hole to be electrically connected to the pressure circuit board 1642. The sensor bracket 1643 is also provided with a wiring cavity 1644, which is conducive to the wiring arrangement of the pressure signal connection wire 1648. Among them, the wiring cavity 1644 can be a groove structure recessed in the sensor bracket 1643, or it can be a hole structure provided inside the sensor bracket 1643.

[0097] Among them, the sensor bracket 1643 is convexly provided with an assembly protrusion 1645, and the assembly protrusion 1645 is surrounded by an insertion cavity 1646, and a hard pin 1647 is provided in the insertion cavity 1646. The insertion cavity 1646 is connected with the aforementioned wiring cavity 1644. The end of the pressure signal connection wire 1648 that is away from the pressure detection body 1641 is passed through the assembly protrusion 1645 and connected to the hard pin 1647. At this time, the assembly protrusion 1645 and the hard pin 1647 jointly define the aforementioned third plug connector 1531. The third socket 1532 is a block structure protruding from the side of the second circuit board 132 facing the motor shaft, and is provided with a jack. The hard pin 1647 is inserted into the jack to meet the electrical connection.

[0098] It can be understood that the arrangement of the assembly protrusion 1645 can protect the hard pin 1647 inside it, prevent the hard pin 1647 from being bumped and bent by other structures, and ensure the plugging accuracy with the third socket 1532. Among them, there are at least two pressure signal connection wires 1648, for example, two, four, etc., each of which is connected to a hard pin 1647, and each hard pin 1647 corresponds to a socket provided in the third socket 1532. The pressure signal connection wire 1648 can be integrally formed with the corresponding hard pin 1647.

[0099] See also Figure 2 , Figure 7 and Figure 8 In some embodiments, each electric pump group 100 corresponds to a drive module 130, and the two drive modules 130 are arranged on both sides of the control board 141 group along the axial direction of the motor shaft, and are electrically connected to the control module 140. In other words, the two drive modules 130 can be respectively adapted to a motor 110 for controlling a motor 110. It is precisely because each electric pump group 100 corresponds to the vibration reduction requirements of a wheel, so the two drive modules 130 are set separately, which is conducive to independent and precise control of the operation of the corresponding motor 110. In addition, since the two drive modules 130 can share a control module 140, the structure is further simplified and the size of the electric pump along the axial direction of the motor shaft is reduced.

[0100] Each set of driving modules 130 includes a first circuit board 131 provided with a power circuit and a second circuit board 132 provided with a driving 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 on the left side is provided with a filter circuit and a capacitor element 133, and the first circuit board 131 on the right side is provided with only a capacitor element 133. In actual use, the electric pump further 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 divided into 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 from the drive module 130 along the radial direction of the motor shaft, and the electric pump further includes a signal connector 172, which is connected to the protruding portion of the control module 140. It can be understood that it is precisely because of the protruding setting of the control module 140 that there is surplus space on the control board 141 to electrically connect with the signal connector 172, thereby avoiding occupying additional assembly space. The signal connector 172 serves as a bridge for the control module 140 to communicate with the outside world, and can transmit control signals and feedback information in real time to achieve accurate and efficient control.

[0103] In the related art, since the signal connector is often set on one side of the motor pump along the axial direction of the motor shaft, the motor pump needs to occupy more space in the axial direction to facilitate the assembly of the signal connector, and when the motor pump is installed on the shock absorber or suspension, the assembly interference of the signal connector often needs to be considered. Based on this, the control board 141 in the present application is used to protrude relative to the two drive modules 130 along the radial direction of the motor shaft to transfer the signal connector 172 to a position located in the middle or near the middle 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 is provided with a plurality of jacks arranged at intervals, and the signal connector 172 is provided with a plurality of pins 1721 arranged at intervals, and each pin 1721 is correspondingly inserted into a jack. In other words, the plug-in matching mode of the pins 1721 and the jacks facilitates the rapid plug-in matching of the signal connector 172 and the control board 141.

[0105] See also Figures 4 to 6 In some embodiments, a first accommodating space 1103 is provided at one end of the assembly housing 112 away from the pump 120, a second accommodating space 1102 is provided at the outer peripheral side of the assembly housing 112, the control module 140 is provided in the first accommodating space 1103, and the driving module 130 is provided in the second accommodating space 1102. The two assembly housings 112 are connected at the first accommodating space 1103. The electric pump further includes a first cover plate 181 and a second cover plate 182, which are spaced or adjacent along the axial direction of the motor shaft and are respectively connected to the outer peripheral side of an assembly housing 112 for blocking the second accommodating space 1102.

[0106] That is, the motor 110, the drive module 130, and the control module 140 are assembled in an integrated manner by using the setting of the assembly housing 112, the first cover plate 181 and one of the assembly housings 112 are adapted to correspond to the assembly of one set of drive modules 130, the second cover plate 182 and the other assembly housing 112 are adapted to correspond to the assembly of the other set of drive modules 130, and the two first accommodating spaces 1103 are connected to install the control module 140. Such a setting is equivalent to assembling the two sets of drive modules 130 in independent spaces, and when one cover plate is opened, the other cover plate can be in a closed state, reducing interference with the other drive module 130 and ensuring maintenance safety.

[0107] Each assembly shell 112 includes a U-shaped enclosure 1125 and an arc-shaped barrier 1126 connected between the two lateral sides of the enclosure 1125. The barrier 1126 and the enclosure 1125 together enclose the aforementioned motor cavity 1101. The two lateral sides of the U-shaped enclosure 1125 protrude from the barrier 1126 along the radial direction of the motor shaft to enclose the second accommodating space 1102, and the enclosure 1125 protrudes from the barrier 1126 at one end axially away from the pump 120 along the motor shaft to enclose the first accommodating space 1103. The first circuit board 131 and the second circuit board 132 in the aforementioned drive module 130 can be fixed to the barrier 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 assembly housing 112 is provided with a convex portion 1124 at one end away from the pump 120 and along the radial direction of the motor shaft toward the driving module 130, and the convex portion 1124 and the assembly housing 112 jointly define a first accommodation space 1103. In other words, based on the setting of the enclosure 1125, the enclosure 1125 is provided with a convex portion 1124 at one end away from the pump 120, and the convex portion 1124 and the end of the enclosure 1125 jointly enclose the first accommodation space 1103. It can be understood that the setting of the convex portion 1124 is equivalent to increasing the size of the first accommodation space 1103 along the radial direction of the motor shaft, so that it has more sufficient space to assemble the control board 141, and increases the number and space of electronic components that can be arranged on the control board 141 along the radial direction of the motor shaft, thereby further reducing the size along the axial direction. Moreover, due to the arrangement of the protrusion 1124 , it is ensured that the control board 141 protrudes from the two sets of driving modules 130 along the radial direction of the motor shaft and is connected to the signal connector 172 .

[0109] In addition, it is precisely because of the setting of the protrusion 1124 of the assembly shell 112 that the first cover plate 181 and the second cover plate 182 can be separated, so that the first cover plate 181 and the second cover plate 182 only need to cover the position of the second accommodating space 1102 corresponding to each other. In this way, when one of the first cover plate 181 and the second cover plate 182 is opened, it is ensured that the drive module 130 in the second accommodating space 1102 corresponding to the other will not be exposed along the radial direction of the motor shaft, reducing assembly interference and maintenance interference. At the same time, even if the first cover plate 181 and the second cover plate 182 are both opened, it is precisely because of the setting of the two protrusions 1124 that the control board 141 will not be completely exposed along the radial direction of 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 an avoidance recess 1801 for accommodating the signal connector 172, and the signal connector 172 is inserted into the corresponding convex portion and electrically connected to the control module 140. In other words, the arrangement of the avoidance recess 1801 can accommodate the signal connector 172, thereby reducing the occupied space of the signal connector 172 in the radial direction of the motor shaft. For example, the first cover plate 181 can be provided with a corresponding avoidance recess 1801. Alternatively, the second cover plate 182 can be provided with a corresponding avoidance recess 1801.

[0111] Among them, the first cover plate 181 and the second cover plate 182 are both provided with a cavity for accommodating electronic components, and the depth of the cavity corresponding to the capacitor element 133 is larger, and the depth of the remaining parts is smaller. At the same time, the convex portion 1124 for connecting the signal connector 172 is provided with an assembly hole, and the signal connector 172 is inserted into the assembly hole to be electrically connected to the control board 141. A sealing member is provided between the signal connector 172 and the assembly hole to ensure the sealing of the connection.

[0112] Another embodiment of the present application provides an active hydraulic suspension, including a shock absorber and the above-mentioned motor pump, wherein the motor pump is in fluid communication with the shock absorber. The motor pump 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 motor pump and shock absorber are both connected to the suspension body.

[0113] 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.

[0114] 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.

[0115] The above-described embodiments only express several implementation methods of the present application, and the descriptions thereof are relatively specific and detailed, but they cannot be understood as limiting the scope of the patent application. It should be pointed out that, for a person of ordinary skill in the art, several variations and improvements can be made without departing from the concept of the present application, and these all belong to the protection scope of the present application. Therefore, the scope of patent protection of the present application shall be subject to the attached claims.

Claims

1. An electric pump, characterized in that: The invention comprises two groups of electric pump groups, each group of the electric pump groups comprises a motor having a motor shaft and a pump connected to the motor, the pump is arranged at one end of the motor along the axial direction of the motor shaft, and the two groups of the electric pump groups are connected at one end away from the respective pumps, and the electric pump further comprises: A drive module is arranged on the outer peripheral side of the motor along the radial direction of the motor shaft, and the drive module is provided with a power supply circuit and a drive circuit, which are electrically connected, and the drive circuit is electrically connected to the motor; The control module is axially arranged at the end of the motor away from the pump along the motor shaft and is located between the two groups 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 driving module comprises a first circuit board and a second circuit board which are radially stacked along the motor shaft. The first circuit board is provided with the power supply circuit, and the second circuit board is provided with the driving 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 a side of the second circuit board away from the motor shaft; The power supply circuit at least includes a capacitor element, and the capacitor element is arranged on a side of the first circuit board facing away from the second circuit board.

4. The electric pump according to claim 1, characterized in that: The electric pump further comprises a sensor module, each of the motors is provided with the sensor module correspondingly, and the sensor modules are arranged on both sides of the control module along the axial direction of the motor shaft, and are 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 one 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 comprises 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 is provided with 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 disposed close to 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 driving module includes a second circuit board provided with a driving circuit, the second circuit board is provided with 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 groups corresponds to a driving module group. Two groups of driving modules are arranged on both sides of the control module along the axial direction of the motor shaft and are both electrically connected to the control module.

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

11. The electric pump according to claim 9, characterized in that The motor comprises a motor body and an assembly shell, the assembly shell is surrounded by a motor cavity, and the motor body is arranged in the motor cavity; Wherein, a first accommodation space is provided at one end of the assembly shell away from the pump, a second accommodation space is provided at the outer peripheral side of the assembly shell, the control module is provided in the first accommodation space, and the drive module is provided in the second accommodation space; The two assembly shells are connected at the first accommodating space. The electric pump also includes a first cover plate and a second cover plate, which are spaced or adjacent along the axial direction of the motor shaft and are respectively connected to the outer peripheral side of one of the assembly shells to seal the second accommodating space.

12. The electric pump according to claim 11, characterized in that The assembly housing is provided with a convex portion at one end away from the pump and along the radial direction of the motor shaft toward the driving module, and the convex portion and the assembly housing together define a first accommodating 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 an avoidance recessed portion for accommodating a signal connector, and the signal connector is inserted through the corresponding convex portion and is electrically connected to the control module.

14. An active hydraulic suspension, characterized in that: The active hydraulic suspension comprises: Shock absorbers; The electric pump according to any one of claims 1 to 13, wherein the electric pump is in fluid communication with the shock absorber.

15. A car, characterized in that: The automobile includes the active hydraulic suspension of claim 14 .

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