Single motor pump, chassis system, and vehicle

Abstract

The utility model provides a kind of single motor pump, chassis system and vehicle, the single motor pump includes motor shell, control assembly and electric control upper cover, motor shell is equipped with containing cavity, containing cavity has open mouth;Control assembly includes first circuit board, second circuit board and EMC shield, first circuit board is stacked in the upper of second circuit board, low voltage filter element and high voltage filter element are equipped with in the first face of first circuit board side by side, low voltage signal circuit area is equipped on the second face of first circuit board, EMC shield is equipped in the outside of low voltage signal circuit area;Electric control upper cover is detachably installed in the open mouth of containing cavity, electric control upper cover includes cover plate and baffle, baffle is used to abut first circuit board and is located between low voltage filter element and high voltage filter element, to isolate low voltage filter element and high voltage filter element.The utility model can realize the detachable installation of control assembly and the effective isolation of signal, provide strong guarantee for the stable operation of single motor pump.

Description

Technical Field

[0001] This utility model relates to the field of electric pump technology, specifically to a single-motor pump, chassis system, and vehicle. Background Technology

[0002] The stability and electromagnetic compatibility of a single-motor pump controller directly affect system reliability. In related technologies, single-motor pump controllers typically integrate low-voltage control components (such as MCUs and sensor signal processing) with high-voltage power components (such as filters and drive modules) within the same housing. However, during operation, high-frequency electromagnetic noise generated by the high-voltage power components can easily radiate through the space to the low-voltage signal components, affecting their operation and even causing logic errors, resulting in abnormal motor control parameters. Utility Model Content

[0003] This invention aims to at least partially solve one of the technical problems in related technologies. To this end, embodiments of this invention propose a single-motor pump, chassis system, and vehicle, achieving detachable installation of control components, effective signal filtering and isolation, and good electromagnetic compatibility, thus providing strong support for the stable operation of the single-motor pump in various complex environments.

[0004] The single-motor pump provided in this embodiment includes a motor housing, a control component, and an electronic control cover. The motor housing has a receiving cavity with an opening. The control component is detachably installed in the receiving cavity and includes a first circuit board, a second circuit board, and an EMC shield. The first circuit board is stacked on top of the second circuit board and has a first side and a second side arranged opposite each other. A low-voltage filter element and a high-voltage filter element are arranged side by side on the first side, and a low-voltage signal circuit area is arranged on the second side. The EMC shield is located outside the low-voltage signal circuit area. The electronic control cover is detachably installed at the opening of the receiving cavity and includes a cover plate and a partition plate. The partition plate is used to abut against the first circuit board and is located between the low-voltage filter element and the high-voltage filter element to isolate the low-voltage filter element and the high-voltage filter element.

[0005] In summary, the single-motor pump provided in this embodiment of the present invention, through a unique structural design, organically combines the motor housing, control components, and electrical control cover together, achieving detachable installation of the control components, effective signal filtering and isolation, and good electromagnetic compatibility. This provides a strong guarantee for the stable operation of the single-motor pump in various complex environments, and has significant innovation and practical value.

[0006] In some embodiments, the motor housing includes a main housing and a secondary housing, the main housing having a motor shaft inside, the secondary housing being located on the side of the main housing and extending radially along the main housing, and the secondary housing having an opening.

[0007] In some embodiments, the single-motor pump further includes multiple studs, and the sub-housing is provided with at least one mounting boss. The mounting boss is provided with a threaded hole, and the second circuit board is provided with a through hole that matches the threaded hole. One end of the stud passes through the through hole and is screwed to the threaded hole to fix the second circuit board.

[0008] In some embodiments, a power component is provided on the side of the second circuit board away from the first circuit board, and at least one mounting platform in the sub-housing is provided with thermal grease. The thermal grease is used to adhere to the power component on the second circuit board to accelerate the heat dissipation of the power component.

[0009] In some embodiments, the EMC shielding cover includes a first plate, a second plate, and a connecting arc plate, wherein the first plate is disposed around the outer side of the second plate, and the connecting arc plate is connected between the first plate and the second plate.

[0010] In some embodiments, the first circuit board is provided with a first connection terminal, and the second circuit board is provided with a second connection terminal. The first connection terminal is connected to the second connection terminal to realize signal transmission between the first circuit board and the second circuit board.

[0011] In some embodiments, the second circuit board is provided with a temperature sensor for monitoring the operating temperature of the motor.

[0012] In some embodiments, the second circuit board is provided with an MCU control circuit, which is located below the EMC shielding cover, and the electronic control cover is provided with a vehicle low-voltage connection port and a vehicle high-voltage connection port.

[0013] Furthermore, one embodiment of the present invention also provides a chassis system comprising the single-motor pump provided in any of the above embodiments. Additionally, one embodiment of the present invention also provides a vehicle comprising the chassis system provided in the above embodiments. Attached Figure Description

[0014] Figure 1 This is an exploded view of a single-motor pump provided in one embodiment of the present invention.

[0015] Figure 2 This is a three-dimensional schematic diagram of the electrical control cover in a single-motor pump provided in an embodiment of this utility model.

[0016] Figure 3This is a schematic diagram of the internal structure of a single-motor pump provided in an embodiment of this utility model.

[0017] Figure 4 This is an exploded view of the single-motor pump structure provided in one embodiment of the present invention from another angle.

[0018] Attached reference numeral: 100, single-motor pump;

[0019] 10. Motor housing; 11. Receiving cavity; 111. Opening; 12. Main housing; 13. Sub-housing; 131. Mounting boss; 132. Threaded hole;

[0020] 20. Control component; 21. First circuit board; 211. First side; 212. Second side; 213. Low-voltage filter element; 214. High-voltage filter element; 215. Low-voltage signal circuit area; 216. First connection terminal; 217. High-voltage connection terminal; 22. Second circuit board; 221. Through hole; 222. Power element; 223. Second connection terminal; 224. Temperature sensor; 225. MCU control circuit; 226. DC-link; 227. Motor position signal sampling connector; 228. Oil pump pressure sampling sensor; 229. UVW three-phase plug terminal; 23. EMC shield; 231. First board; 232. Second board; 233. Connecting arc plate; 234. Clearance space;

[0021] 30. Electronic control cover; 31. Cover plate; 32. Partition plate; 33. Clearance cavity; 331. Low-voltage shielding area; 332. High-voltage shielding area; 34. Vehicle low-voltage connection port; 35. Vehicle high-voltage connection port. Detailed Implementation

[0022] The embodiments of the present invention are described in detail below, examples of which are shown in the accompanying drawings. The embodiments described below with reference to the accompanying drawings are exemplary and intended to explain the present invention, and should not be construed as limiting the present invention.

[0023] like Figures 1 to 3 As shown, one embodiment of the present invention provides a single-motor pump 100, which includes a motor housing 10, a control component 20, and an electronic control cover 30. The motor housing 10 is provided with a receiving cavity 11, the receiving cavity 11 having an opening 111. The control component 20 is detachably installed in the receiving cavity 11, and the electronic control cover 30 is detachably installed at the opening 111 of the receiving cavity 11 to accommodate the control component 20 inside the receiving cavity 11.

[0024] The control component 20 includes a first circuit board 21, a second circuit board 22, and an EMC shield 23. The first circuit board 21 is stacked on top of the second circuit board 22. The first circuit board 21 has a first surface 211 and a second surface 212 that are arranged opposite to each other. A low-voltage filter element 213 and a high-voltage filter element 214 are arranged side by side on the first surface 211. A low-voltage signal circuit area 215 is provided on the second surface 212. The EMC shield 23 is located outside the low-voltage signal circuit area 215.

[0025] The electronic control cover 30 includes a cover plate 31 and a partition plate 32. The partition plate 32 is used to abut against the first circuit board 21 and is located between the low-voltage filter element 213 and the high-voltage filter element 214 to isolate the low-voltage filter element 213 and the high-voltage filter element 214.

[0026] Specifically, the single-motor pump 100 mainly consists of three parts: a motor housing 10, a control component 20, and an electrical control cover 30. The motor housing 10 serves as the basic support structure for the entire single-motor pump 100. The electrical control cover 30 can be installed at the opening 111 of the receiving cavity 11. After the electrical control cover 30 is installed in place, it can accommodate the control component 20 inside the receiving cavity 11, providing good protection for the control component 20 and preventing external dust, moisture, and other impurities from entering and affecting the operation of the control component 20.

[0027] The control component 20 is the core control part of the single-motor pump 100. The first circuit board 21 is stacked on top of the second circuit board 22 to form a stacked structure, which can integrate more functions in a limited space. The low-voltage filter element 213 of the first circuit board 21 can be used to filter low-voltage signals, remove noise and interference from the signals, and ensure the stability and accuracy of low-voltage signals; the high-voltage filter element 214 filters high-voltage signals to prevent noise in the high-voltage signals from interfering with or damaging other circuit components. By arranging the low-voltage filter element 213 and the high-voltage filter element 214 side by side on the first surface 211 of the first circuit board 21, it is convenient for circuit connection and layout, and can also achieve a certain degree of preliminary signal isolation.

[0028] The low-voltage signal circuit area 215, located on the second side 212 of the first circuit board 21, plays a crucial role in processing and transmitting low-voltage signals. It is a sensitive and critical circuit component in the control assembly 20. An EMC shield is located outside the low-voltage signal circuit area 215, forming a relatively enclosed electromagnetic shielding space. This effectively blocks interference from external electromagnetic waves and prevents electromagnetic radiation generated by the low-voltage signal circuit area 215 from interfering with other external equipment, thus meeting electromagnetic compatibility (EMC) requirements and ensuring the stable operation of the low-voltage signal circuit area 215.

[0029] In the single-motor pump 100, the electronic control cover 30 not only seals the accommodating cavity 11 and protects the control component 20, but also performs an important signal isolation function. It consists of two parts: a cover plate 31 and a partition plate 32. The cover plate 31, as the main body of the electronic control cover 30, covers the opening 111 of the accommodating cavity 11, providing physical protection for the control component 20. During actual operation, the low-voltage filter element 213 and the high-voltage filter element 214 process signals of different voltage levels, and electromagnetic coupling may exist between them. The partition plate 32 effectively blocks this electromagnetic coupling path, improving the accuracy and stability of signal processing, thereby ensuring the normal operation of the entire single-motor pump 100.

[0030] In this embodiment, the electronic control cover 30 adopts a recessed design, which can form a relief cavity 33. The partition 32 is located in the middle of the relief cavity 33, which can divide the relief cavity 33 into a low-voltage shielding area 331 and a high-voltage shielding area 332. This can physically isolate the low-voltage filter element 213 and the high-voltage filter element 214, further reducing electromagnetic interference between them.

[0031] In summary, the single-motor pump 100 provided in this embodiment of the present invention, through a unique structural design, organically combines the motor housing 10, the control component 20, and the electronic control cover 30 together, realizing the detachable installation of the control component 20, effective signal filtering and isolation, and good electromagnetic compatibility. This provides a strong guarantee for the stable operation of the single-motor pump 100 in various complex environments, and has significant innovation and practical value.

[0032] like Figure 1 , Figure 3 and Figure 4 As shown, in some embodiments, the motor housing 10 includes a main housing 12 and a secondary housing 13. The main housing 12 houses the motor shaft, and the secondary housing 13 is located on the side of the main housing 12 and extends radially along the main housing 12. The secondary housing 13 has an opening 111. The location of the secondary housing 13 on the side of the main housing 12 and its radial extension makes full use of space, resulting in a more compact and rational overall layout of the motor housing 10. Simultaneously, the radial extension structure of the secondary housing 13 helps increase the heat dissipation area of ​​the motor housing 10, improving heat dissipation efficiency and ensuring that the motor's performance is not affected by overheating during long-term operation.

[0033] In some embodiments, the single-motor pump 100 further includes a plurality of studs, and the sub-housing 13 is provided with at least one mounting boss 131. The mounting boss 131 is provided with a threaded hole 132, and the second circuit board 22 is provided with a through hole 221 that matches the threaded hole 132. One end of the stud passes through the through hole 221 and is screwed to the threaded hole 132 to fix the second circuit board 22.

[0034] The multiple mounting bosses 131 are spaced along the inner wall of the accommodating cavity 11, which can not only provide uniform support for the second circuit board 22 and avoid deformation or damage to the circuit board due to excessive local stress, but also support the second circuit board 22 from different positions, greatly enhancing the stability of the second circuit board 22 installation.

[0035] Furthermore, in this embodiment, the height of the mounting boss 131 is lower than the height of the inner wall of the receiving cavity 11, forming a height difference, so that the second circuit board 22 can smoothly slide into the receiving cavity 11 along the inner wall of the receiving cavity 11. When it reaches the appropriate position, the mounting boss 131 can precisely match the corresponding position on the second circuit board 22, achieving precise positioning.

[0036] During installation, the operator inserts one end of the stud through the through hole 221 on the second circuit board 22 and then screws it into the threaded hole 132 on the mounting boss 131. As the stud is gradually screwed in, the second circuit board 22 is gradually fixed and eventually stably fixed inside the sub-housing 13.

[0037] Furthermore, such as Figure 3 and Figure 4 As shown, a power component 222 is provided on the side of the second circuit board 22 away from the first circuit board 21. At least one mounting platform in the sub-casing 13 is provided with thermal grease. The thermal grease is used to adhere to the power component 222 on the second circuit board 22 to accelerate the heat dissipation of the power component 222.

[0038] Specifically, the power element 222 plays a crucial role in energy conversion and signal amplification during the operation of the single-motor pump 100, generating a significant amount of heat during operation. At least one mounting platform exists within the sub-casing 13 that abuts against the power element 222. This platform not only secures the power element 222 but also allows heat to be conducted away from the power element 222 via the heat dissipation grease on the mounting platform, thus improving the heat dissipation efficiency of the power element 222.

[0039] like Figure 1 As shown, in some embodiments, the EMC shield 23 includes a first plate 231, a second plate 232, and a connecting arc plate 233. The first plate 231 is disposed around the outer side of the second plate 232, and the connecting arc plate 233 is connected between the first plate 231 and the second plate 232. The first plate 231 can be fixed to the first circuit board 21 by a threaded structure or a snap-fit ​​structure. Specifically, the second plate 232, being farther away from the first circuit board 21 relative to the first plate 231, can form a clearance space 234, so that the low-voltage signal circuit area 215 is disposed within the clearance space 234. This not only provides a relatively clean electromagnetic environment for the low-voltage signal circuit area 215, but also helps to dissipate heat from the low-voltage signal circuit area 215.

[0040] like Figure 1 , Figure 3 and Figure 4 As shown, in some embodiments, the first circuit board 21 is provided with a first connection terminal 216, and the second circuit board 22 is provided with a second connection terminal 223. The first connection terminal 216 is connected to the second connection terminal 223 to realize signal transmission between the first circuit board 21 and the second circuit board 22.

[0041] Optionally, the first connecting terminal 216 and the second connecting terminal 223 can be configured as pin-type, socket-type, spring-type, or other similar components.

[0042] In some embodiments, the second circuit board 22 is provided with a temperature sensor 224, which is used to monitor the operating temperature of the motor, thereby capturing changes in the winding temperature in a timely manner and providing a basis for taking timely measures.

[0043] In some embodiments, the second circuit board 22 is provided with an MCU control circuit 225, which is located below the EMC shield 23, fully taking into account electromagnetic compatibility requirements and ensuring the stable operation of the MCU control circuit.

[0044] like Figure 1 As shown, the electronic control cover 30 is equipped with a vehicle low-voltage connection port 34 and a vehicle high-voltage connection port 35. The vehicle low-voltage connection port 34 provides low-voltage power to the MCU control circuit and also transmits various control signals and status information. For example, the vehicle can send start and stop commands to the single-motor pump 100 through the low-voltage connection port, while the single-motor pump 100 can use this port to feedback the motor's operating status, fault information, etc., to the vehicle.

[0045] The high-voltage connection port 35 of the vehicle is used to connect the single motor pump 100 to the vehicle's high-voltage power supply system, providing the high-voltage electrical energy required for the motor's operation. High-voltage electrical energy is the power source for driving the motor to operate normally. The high-voltage power is introduced into the single motor pump 100 through the high-voltage connection port, and the high-voltage DC power is converted into three-phase AC power suitable for the motor's operation through the internal power conversion circuit (such as an inverter).

[0046] In this embodiment, a DC-Link 226 is provided on the second circuit board 22, and the DC-Link 226 and the second circuit board 22 form an L-shaped structure. This allows the DC-Link to maintain a certain spatial distance from other sensitive circuits (such as MCU control circuits) on the second circuit board 22, reducing electromagnetic interference coupling. At the same time, a reasonable layout can also optimize the distribution of electromagnetic fields and reduce the impact of electromagnetic radiation on surrounding equipment.

[0047] The second circuit board 22 is equipped with a motor position signal sampling connector 227, an oil pump pressure sampling sensor 228, and a UVW three-phase connector 229. The motor position signal sampling connector 227 allows the control system to monitor the motor's rotor position in real time, thereby precisely controlling the motor's speed and direction. The oil pump pressure sampling sensor 228 allows the control system to monitor the oil pump pressure in real time, ensuring stable operation of the motor-pump. The UVW three-phase connector is used to connect to the motor and provide drive current.

[0048] Furthermore, the first circuit board 21 is provided with a high-voltage connection terminal 217 to ensure that high-voltage power can be transmitted to the motor drive circuit efficiently and without loss, providing sufficient power to the motor.

[0049] Furthermore, one embodiment of the present invention also provides a chassis system including the single-motor pump 100 provided in any of the above embodiments. Additionally, one embodiment of the present invention also provides a vehicle including the chassis system provided in the above embodiments.

[0050] It should be noted that the chassis system and vehicle provided in this application embodiment have the same implementation principle and technical effect as the aforementioned single motor pump 100 embodiment. For the sake of brevity, any parts not mentioned in the chassis system and vehicle embodiment can be referred to the corresponding content in the aforementioned single motor pump 100 embodiment.

[0051] In the description of this utility model, it should be understood that the terms "center", "longitudinal", "transverse", "length", "width", "thickness", "upper", "lower", "front", "rear", "left", "right", "vertical", "horizontal", "top", "bottom", "inner", "outer", "clockwise", "counterclockwise", "axial", "radial", "circumferential", etc., indicating the orientation or positional relationship are based on the orientation or positional relationship shown in the accompanying drawings, and are only for the convenience of describing this utility model and simplifying the description, and are not intended to indicate or imply that the device or element referred to must have a specific orientation, or be constructed and operated in a specific orientation, and therefore should not be construed as a limitation of this utility model.

[0052] 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 indicated technical features. Thus, a feature defined as "first" or "second" may explicitly or implicitly include at least one of that feature. In the description of this utility model, "a plurality of" means at least two, such as two, three, etc., unless otherwise explicitly specified.

[0053] In this utility model, unless otherwise explicitly specified and limited, the terms "installation," "connection," "joining," and "fixing," etc., should be interpreted broadly. For example, they can refer to a fixed connection, a detachable connection, or an integral part; they can refer to a mechanical connection, an electrical connection, or a connection that allows communication between them; they can refer to a direct connection or an indirect connection through an intermediate medium; they can refer to the internal communication of two components or the interaction between two components, unless otherwise explicitly limited. Those skilled in the art can understand the specific meaning of the above terms in this utility model according to the specific circumstances.

[0054] In this utility model, unless otherwise explicitly 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 is in indirect contact with the second feature through an intermediate medium. Furthermore, "above," "on top of," and "over" the second feature can mean that the first feature is directly above or diagonally above the second feature, or simply 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 that the first feature is at a lower horizontal level than the second feature.

[0055] In this utility model, the terms "one embodiment," "some embodiments," etc., refer to specific features, structures, materials, or characteristics described in connection with that embodiment or example, which are included in at least one embodiment or example of this utility model. In this specification, the illustrative expressions of the above terms do not necessarily refer to the same embodiment or example. Furthermore, the specific features, structures, materials, or characteristics described may be combined in any suitable manner in one or more embodiments or examples. Moreover, without contradiction, those skilled in the art can combine and integrate the different embodiments or examples described in this specification, as well as the features of different embodiments or examples.

[0056] Although embodiments of the present invention have been shown and described above, it is understood that the above embodiments are exemplary and should not be construed as limiting the present invention. Those skilled in the art can make changes, modifications, substitutions and variations to the above embodiments within the scope of the present invention.

Claims

1. A single-motor pump, characterized in that, The device includes a motor housing, a control assembly, and an electronic control cover. The motor housing has a receiving cavity with an opening. The control assembly is detachably mounted in the receiving cavity and includes a first circuit board, a second circuit board, and an EMC shield. The first circuit board is stacked on top of the second circuit board and has a first side and a second side opposite to each other. A low-voltage filter element and a high-voltage filter element are arranged side by side on the first side, and a low-voltage signal circuit area is provided on the second side. The EMC shield is located outside the low-voltage signal circuit area. The electronic control cover is detachably mounted at the opening of the receiving cavity and includes a cover plate and a partition plate. The partition plate abuts against the first circuit board and is located between the low-voltage filter element and the high-voltage filter element to isolate the low-voltage filter element and the high-voltage filter element.

2. The single-motor pump according to claim 1, characterized in that, The motor housing includes a main housing and a secondary housing. The main housing contains a motor shaft. The secondary housing is located on the side of the main housing and extends radially along the main housing. The secondary housing has an opening.

3. The single-motor pump according to claim 2, characterized in that, It also includes multiple studs, and the sub-housing is provided with at least one mounting boss. The mounting boss is provided with a threaded hole, and the second circuit board is provided with a through hole that matches the threaded hole. One end of the stud passes through the through hole and is screwed into the threaded hole to fix the second circuit board.

4. The single-motor pump according to claim 3, characterized in that, The second circuit board has a power component on the side away from the first circuit board. At least one mounting platform in the sub-housing is provided with thermal grease, which is used to adhere to the power component on the second circuit board to accelerate the heat dissipation of the power component.

5. The single-motor pump according to claim 1, characterized in that, The EMC shielding cover includes a first plate, a second plate, and a connecting arc plate. The first plate is arranged around the outside of the second plate, and the connecting arc plate is connected between the first plate and the second plate.

6. The single-motor pump according to claim 1, characterized in that, The first circuit board is provided with a first connection terminal, and the second circuit board is provided with a second connection terminal. The first connection terminal is connected to the second connection terminal to realize signal transmission between the first circuit board and the second circuit board.

7. The single-motor pump according to claim 1, characterized in that, The second circuit board is equipped with a temperature sensor, which is used to monitor the operating temperature of the motor.

8. The single-motor pump according to claim 1, characterized in that, The second circuit board is equipped with an MCU control circuit, which is located below the EMC shield. The electronic control cover is equipped with a vehicle low-voltage connection port and a vehicle high-voltage connection port.

9. A chassis system, characterized in that, The single-motor pump included in any one of claims 1 to 8.

10. A vehicle, characterized in that, Includes the chassis system as described in claim 9.

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