Motor pump, chassis system and vehicle

Abstract

The utility model provides a motor pump, chassis system and vehicle, the motor pump includes pump case and control subassembly, the control subassembly includes bottom case, circuit board and top cover, bottom case is provided in the outer surface of pump case, top cover is detachably provided in bottom case, top cover and bottom case define and form the accommodation cavity, circuit board is provided in the accommodation cavity, and the circuit board is provided in the accommodation cavity. The circuit board comprises a substrate and a direct-current link capacitor, the substrate is provided with a first face facing one side of the top cover, and the direct-current link capacitor is arranged on the first face of the substrate. According to the utility model, the risk of damage caused by exposure of components can be reduced, and the overall reliability and safety are improved.

Description

Technical Field

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

[0002] In automotive chassis systems, motor pump designs often integrate the controller and pump to reduce the overall system size and improve space utilization. In particular, some components of the controller are inserted into the pump housing. The Direct Current Link Capacitor (DC-LINK) is one of the more common components inserted into the pump housing. However, during the production and transportation of the controller, some components are exposed to the outside environment due to their insertion into the pump housing, lacking sufficient protection and thus facing the risk of impact damage. Unavoidable factors such as vibration and collisions during production and transportation can easily cause physical damage to exposed components, posing a safety risk. Utility Model Content

[0003] This invention aims to at least partially solve one of the aforementioned technical problems. To this end, this invention provides a motor pump, a chassis system, and a vehicle, which can reduce the risk of damage due to exposed components and improve overall reliability and safety.

[0004] The electric motor pump provided by this utility model includes a pump housing and a control component. The control component includes a bottom shell, a circuit board, and a top cover. The bottom shell is disposed on the outer surface of the pump housing, and the top cover is detachably disposed on the bottom shell. The top cover and the bottom shell define a receiving cavity. The circuit board is disposed in the receiving cavity. The circuit board includes a substrate and a DC link capacitor. The substrate has a first surface facing the top cover, and the DC link capacitor is disposed on the first surface of the substrate.

[0005] In summary, the motor pump provided by this utility model can house the DC link capacitor within the accommodating cavity. Compared with the traditional design where the DC link capacitor is directly inserted into the pump housing, this effectively avoids damage to some components in the control assembly that may be caused by external forces such as collisions and compression during transportation and assembly, greatly improving the reliability and service life of the product.

[0006] In some embodiments, two circuit boards are provided, and the two circuit boards are stacked in the radial direction of the pump housing; both circuit boards have DC link capacitors on their substrates, and one of the two circuit boards has a microcontroller unit, while the other of the two circuit boards has a filter unit and a low-voltage signal unit.

[0007] In some embodiments, the two circuit boards are divided into a first board and a second board, the second board being located above the first board in the radial direction of the pump housing, the second board having a clearance groove, and the DC link capacitor of the first board being disposed in the clearance groove.

[0008] In some embodiments, the bottom shell includes a mounting groove and a protruding edge extending along the edge of the mounting groove, the protruding edge protruding toward the top cover, the shape of the mounting groove being adapted to the shape of the circuit board, and the first board being detachably mounted in the mounting groove.

[0009] In some embodiments, the control component further includes a mounting post having an external threaded section. At least one of the bottom shell and the top cover is provided with a plurality of first positioning posts and a plurality of first threaded holes. The circuit board is provided with a plurality of first positioning holes and a plurality of first through holes. The first positioning holes are configured to correspond one-to-one with the first positioning posts, and the first through holes are configured to correspond one-to-one with the first threaded holes. The external threaded section of the mounting post passes through the first through hole and is screwed into the first threaded hole. The first positioning posts and the first threaded holes are sequentially arranged in the mounting groove along the edge of the convex edge.

[0010] In some embodiments, the pump housing includes a first housing and a second housing arranged coaxially, with the axial opening of the first housing opposite to the axial opening of the second housing. The bottom housing has a first wire passage hole and a second wire passage hole, with the first wire passage hole corresponding to the first housing and the second wire passage hole corresponding to the second housing.

[0011] In some embodiments, the control component further includes a fixing stud, the bottom shell is provided with a plurality of second threaded holes and a plurality of second positioning pins, the top cover is provided with a second positioning hole and a second through hole, the second positioning hole is provided in a one-to-one correspondence with the second positioning pin, the second through hole is provided in a one-to-one correspondence with the second threaded hole, and one end of the fixing stud passes through the second through hole and is screwed into the second threaded hole.

[0012] In some embodiments, the control assembly further includes a sealing gasket disposed between the top cover and the bottom shell.

[0013] Furthermore, the chassis system provided by this utility model includes the motor pump provided in any of the above embodiments.

[0014] The vehicle provided by this utility model may include the chassis system provided in the above embodiments or the motor pump provided in any of the above embodiments. Attached Figure Description

[0015] Figure 1 This is a three-dimensional schematic diagram of a motor pump provided in an embodiment of this utility model.

[0016] Figure 2 This is an exploded schematic diagram of an embodiment of the electric motor pump provided by this utility model.

[0017] Figure 3 This is a schematic diagram of the internal structure of the control component in a motor pump provided in an embodiment of the present invention.

[0018] Figure 4 This is a schematic diagram of the structure of the bottom shell of the motor pump provided in one embodiment of the present invention.

[0019] Figure 5 This is a schematic diagram of the structure of the top cover of the motor pump provided in one embodiment of the present invention.

[0020] Figure 6 This is a schematic diagram of the bottom shell of the motor pump provided in one embodiment of the present invention from another angle.

[0021] Figure label:

[0022] 10. Pump casing; 11. First casing; 12. Second casing; 13. Positioning groove; 14. Third threaded hole;

[0023] 20. Control component; 21. Base shell; 211. Mounting groove; 212. Protruding edge; 213. First positioning post; 214. First threaded hole; 215. First wire through hole; 216. Second wire through hole; 217. Second threaded hole; 218. Second positioning post; 219. Protruding post;

[0024] 23. Circuit board; 231. Substrate; 2311. First side; 2312. Second side; 232. DC link capacitor; 233. Microcontroller unit; 234. Filtering unit; 235. Low voltage signal unit; 236. First positioning hole; 237. First through hole;

[0025] 241, First plate; 2411, High-voltage connection unit; 2412, Low-voltage connection unit; 243, Second plate; 2431, Clearance groove;

[0026] 25. Top cover; 251. Second positioning hole; 252. Second through hole; 253. Third through hole;

[0027] 27. Receptacle. Detailed Implementation

[0028] 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.

[0029] refer to Figures 1 to 5As shown, this utility model provides a motor pump, which includes a pump housing 10 and a control component 20. The control component 20 includes a bottom housing 21, a circuit board 23, and a top cover 25. The bottom housing 21 is disposed on the outer surface of the pump housing 10, and the top cover 25 is detachably disposed on the bottom housing 21. The top cover 25 and the bottom housing 21 define a receiving cavity 27. The circuit board 23 is disposed in the receiving cavity 27. The circuit board 23 includes a substrate 231 and a DC-LINK capacitor 232. The substrate 231 has a first surface 2311 facing the top cover 25. The DC-LINK capacitor 232 is disposed on the first surface 2311 of the substrate 231, thereby allowing the DC-LINK capacitor 232 to be disposed in the receiving cavity 27. Compared with the traditional design where the DC-LINK capacitor 232 is directly inserted into the pump housing 10, this effectively avoids damage caused by external forces such as collisions and compression during transportation and assembly, and greatly improves the reliability and service life of the product.

[0030] Specifically, the control component 20 is built outside the pump housing 10, and consists of three core components: the bottom housing 21, the circuit board 23, and the top cover 25, forming an organic whole. The bottom housing 21 is mounted on the outer surface of the pump housing 10, providing solid physical support for the internal circuitry and cleverly isolating vibrations and interference that may occur inside the pump body, ensuring the stable operation of the circuit board 23. The substrate 231 also has a second side 2312 facing the bottom housing 21, which is opposite to the first side 2311. That is, the circuit board 23 adopts a double-sided layout, which can make full use of limited space resources, making the circuit design more compact and efficient.

[0031] The DC link capacitor 232 is arranged on the first surface 2311 of the substrate 231, that is, the side near the top cover 25. This not only facilitates electrical connection with other electronic components, but also effectively utilizes the small space between the top cover 25 and the circuit board 23, achieving optimal layout of the circuit board 23. More importantly, this design ensures that the DC link capacitor 232 is completely protected under the cavity 27. Compared with the traditional design that directly inserts the DC link capacitor 232 into the pump housing 10, this effectively avoids damage caused by external forces such as collisions and compression during transportation and assembly, greatly improving the reliability and service life of the product.

[0032] In summary, the electric motor pump provided by this utility model can house the DC link capacitor 232 inside the accommodating cavity 27. Compared with the traditional design where the DC link capacitor 232 is directly inserted into the pump housing 10, this effectively avoids damage caused by external forces such as collisions and squeezing during transportation and assembly, and greatly improves the reliability and service life of the product.

[0033] like Figure 2, Figure 3 As shown, in this embodiment, two circuit boards 23 are provided, and the two circuit boards 23 are stacked in the radial direction of the pump housing 10; both circuit boards 23 have DC link capacitors 232 on their substrates 231, and one of the two circuit boards 23 has a microcontroller unit 233 (MCU), while the other circuit board 23 has a filter unit 234 and a low-voltage signal unit 235. In this embodiment, the microcontroller unit 233 is integrated on the substrate 231 of the circuit board 23.

[0034] Specifically, the two circuit boards 23 are assigned different professional missions. One of the circuit boards 23 can be called the "control core board," which integrates the microcontroller unit 233. The MCU is placed on the high-voltage side of the circuit board 23 (i.e., the side closer to the power input terminal). This design not only shortens the transmission path between the high-voltage signal and the MCU, reducing signal attenuation and interference, but more importantly, it allows the system to achieve effective isolation between high and low voltage signals without the need for additional analog isolation channels, greatly reducing the complexity and cost of the system.

[0035] The other circuit board 23 is designed as an "auxiliary function board," integrating a filter unit 234 and a low-voltage signal unit 235. The filter unit 234 is primarily responsible for filtering out high-frequency noise and interference signals in the circuit, ensuring signal purity. The low-voltage signal unit 235 is responsible for handling communication with low-voltage sensors, actuators, and other devices, as well as providing the necessary low-voltage power to the system. By integrating these two functions onto the same circuit board 23, the system structure is simplified, maintainingability is improved, and the layout and wiring of the circuit board 23 are further optimized, enhancing the overall system performance.

[0036] In addition, the two circuit boards 23 are stacked one on top of the other, which not only makes full use of the space inside the pump housing 10, but also achieves efficient, stable and low-cost operation of the motor pump system by integrating advanced electronic components and circuit design.

[0037] Furthermore, such as Figure 3 As shown, the two circuit boards 23 are divided into a first board 241 and a second board 243. The second board 243 is located above the first board 241 in the radial direction of the pump housing 10. The second board 243 is provided with a clearance groove 2431. The DC link capacitor 232 of the first board 241 is located in the clearance groove 2431, thereby making full use of the vertical space resources inside the pump housing 10. In addition, the design of stacking the upper and lower boards effectively avoids the horizontal space occupation between the circuit boards 23, providing greater flexibility for the installation and heat dissipation of other components.

[0038] Furthermore, such as Figure 1 As shown, the control component 20 also includes a high-voltage connection unit 2411 and a low-voltage connection unit 2412, both of which are mounted on the first board 241. That is, the first board 241 is the control core board, and the second board 243 is the auxiliary function board.

[0039] In some embodiments, such as Figure 2 and Figure 4 As shown, the bottom shell 21 includes a mounting groove 211 and a protruding edge 212 extending along the edge of the mounting groove 211. The protruding edge 212 protrudes toward the top cover 25. The shape of the mounting groove 211 is adapted to the shape of the circuit board 23. The first board 241 is detachably mounted in the mounting groove 211.

[0040] The mounting groove 211 matches the contour of the circuit board 23, ensuring that the circuit board 23 is accurately embedded in the mounting groove 211. Furthermore, the precise gap control effectively prevents displacement or shaking of the circuit board 23 due to vibration during transportation or operation, thus guaranteeing the stability and reliability of the circuit connection. In addition, the protruding edge 212 extends towards the top cover 25, providing additional mechanical strength and sealing between the bottom shell 21 and the top cover 25. It also cleverly forms a protective barrier, effectively preventing the intrusion of harmful substances such as dust and moisture, creating a cleaner and drier working environment for the circuit board 23.

[0041] Furthermore, the control assembly 20 also includes mounting posts with external threaded sections. At least one of the bottom shell 21 and the top cover 25 is provided with a plurality of first positioning posts 213 and a plurality of first threaded holes 214. The circuit board 23 is provided with a plurality of first positioning holes 236 and a plurality of first through holes 237. The first positioning holes 236 are correspondingly arranged with the first positioning posts 213, and the first through holes 237 are correspondingly arranged with the first threaded holes 214. The first positioning posts 213 and the first threaded holes 214 are sequentially arranged in the mounting groove 211 along the edge of the protrusion 212. The external threaded section of the mounting post passes through the first through hole 237 and is screwed into the first threaded hole 214, thereby using the interlocking action of the threads to tightly connect the circuit board 23 and the bottom shell 21 together, ensuring the positional accuracy and stability of the circuit board 23 during the assembly process.

[0042] In this embodiment, both the bottom shell 21 and the top cover 25 are provided with a first positioning post 213 and a first threaded hole 214. The first plate 241 is fixed to the bottom shell 21 by a mounting post, and the second plate 243 is fixed to the top cover 25 by a mounting post. Both the bottom shell 21 and the top cover 25 are provided with at least four first threaded holes 214, and both the bottom shell 21 and the top cover 25 are provided with at least two first positioning posts 213.

[0043] In some embodiments, such as Figure 1 and Figure 2 As shown, the pump housing 10 includes a first housing 11 and a second housing 12 arranged coaxially, and the axial opening of the first housing 11 is opposite to the axial opening of the second housing 12. The bottom housing 21 has a first wire hole 215 and a second wire hole 216. The first wire hole 215 is corresponding to the first housing 11, and the second wire hole 216 is corresponding to the second housing 12.

[0044] In other words, the corresponding arrangement of the first wire through hole 215 with the first housing 11 and the corresponding arrangement of the second wire through hole 216 with the second housing 12 during the assembly process greatly simplifies the wiring and fixing of cables. Cables can be directly inserted into the corresponding housing through the wire through holes to reliably connect with internal components, avoiding complex tangling of cables outside the pump housing 10 and potential safety hazards.

[0045] Furthermore, the first wire hole 215 and the second wire hole 216 are both located at the middle position of the bottom shell 21.

[0046] like Figure 4 and Figure 5 As shown, in some embodiments, the control component 20 further includes a fixing stud. The bottom shell 21 is provided with a plurality of second threaded holes 217 and a plurality of second positioning pins 218. The top cover 25 is provided with a second positioning hole 251 and a second through hole 252. The second positioning hole 251 and the second positioning pin 218 are arranged one-to-one to ensure that the top cover 25 can be accurately positioned on the bottom shell 21 during assembly. The second through hole 252 and the second threaded hole 217 are arranged one-to-one. One end of the fixing stud passes through the second through hole 252 and is screwed into the second threaded hole 217. The engagement of the threads tightly connects the top cover 25 and the bottom shell 21 together.

[0047] Optionally, at least four second threaded holes 217 are provided, and the second threaded holes 217 are respectively located at the four corners of the bottom shell 21.

[0048] Furthermore, the control assembly 20 also includes a sealing gasket disposed between the top cover 25 and the bottom shell 21. The outer contour of the sealing gasket matches the connecting edge of the top cover 25 and the bottom shell 21, ensuring seamless insertion between them during assembly and forming a robust sealing barrier. Simultaneously, the sealing gasket cleverly incorporates through holes corresponding to connecting components such as the fixing studs and the second positioning pin 218. The diameter of these through holes precisely matches the outer diameter of the connecting components, ensuring smooth passage of the connecting components while avoiding sealing failure due to excessively large hole diameters.

[0049] Furthermore, such as Figure 2 and Figure 6As shown, the bottom shell 21 is also provided with a plurality of protrusions 219, and the pump shell 10 is provided with a positioning groove 13 that matches the protrusions 219. The protrusions 219 can be engaged in the positioning groove 13 to position and install the bottom shell 21 onto the pump shell 10.

[0050] In this embodiment, as Figure 2 As shown, the pump housing 10 is provided with multiple third threaded holes 14, and at least one of the bottom housing 21 and the top cover 25 is provided with a third through hole 253, which is correspondingly arranged with the third threaded holes 14. The motor pump also includes multiple positioning studs, one end of which passes through the third through hole 253 on the top cover 25 or the bottom housing 21 and is screwed to the third threaded hole 14, so that the control component 20 can be fixed to the pump housing 10.

[0051] Optionally, at least four third threaded holes 14 are provided, which are located around the bottom shell 21, and the third through hole 253 on the bottom shell 21 is located outside the second threaded hole 217 on the bottom shell 21.

[0052] It should be noted that the mounting posts, fixing studs, and positioning studs can be selected and installed as needed, and are no longer shown in the accompanying drawings provided in this application.

[0053] Furthermore, one embodiment of this utility model also provides a chassis system, which includes the motor pump provided in any of the above embodiments. It should be noted that the chassis system provided in this application has the same implementation principle and technical effects as the aforementioned motor pump embodiments. Therefore, the technical effects produced by the implementation principle of the chassis system can be referred to the aforementioned motor pump embodiments, and will not be repeated here.

[0054] In addition, one embodiment of this utility model also provides a vehicle, which includes the chassis system provided in the above embodiments or the motor pump provided in any of the above embodiments. Similar to the chassis system embodiments described above, the technical effects achieved by this vehicle embodiment based on the implementation principle can be referred to the aforementioned motor pump embodiments, and will not be repeated here.

[0055] In the description of this utility model, it should be understood that the terms "center", "upper", "lower", "front", "rear", "left", "right", "top", "bottom", "inner", "outer", "axial", "radial", "circumferential", etc., indicate the orientation or positional relationship based on the orientation or positional relationship shown in the accompanying drawings. They are only for the convenience of describing this utility model and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, or be constructed and operated in a specific orientation. Therefore, they should not be construed as limitations on this utility model.

[0056] 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.

[0057] 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.

[0058] 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.

[0059] 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.

[0060] 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. An electric motor pump, characterized in that, The device includes a pump housing and a control assembly. The control assembly includes a bottom housing, a circuit board, and a top cover. The bottom housing is disposed on the outer surface of the pump housing, and the top cover is detachably disposed on the bottom housing. The top cover and the bottom housing define a receiving cavity. The circuit board is disposed within the receiving cavity and includes a substrate and a DC link capacitor. The substrate has a first side facing the top cover, and the DC link capacitor is disposed on the first side of the substrate.

2. The electric pump according to claim 1, characterized in that, Two circuit boards are provided, and the two circuit boards are stacked in the radial direction of the pump housing; both circuit boards have DC link capacitors on their substrates, and one of the two circuit boards has a microcontroller unit, while the other of the two circuit boards has a filter unit and a low-voltage signal unit.

3. The electric pump according to claim 2, characterized in that, The two circuit boards are divided into a first board and a second board. The second board is located above the first board in the radial direction of the pump housing. The second board is provided with a clearance groove, and the DC link capacitor of the first board is located in the clearance groove.

4. The electric pump according to claim 3, characterized in that, The bottom shell includes a mounting groove and a protruding edge extending along the edge of the mounting groove. The protruding edge protrudes toward the top cover. The shape of the mounting groove is adapted to the shape of the circuit board. The first board is detachably mounted in the mounting groove.

5. The electric pump according to claim 4, characterized in that, The control component further includes a mounting post having an external threaded section. At least one of the bottom shell and the top cover is provided with a plurality of first positioning posts and a plurality of first threaded holes. The circuit board is provided with a plurality of first positioning holes and a plurality of first through holes. The first positioning holes are provided in a one-to-one correspondence with the first positioning posts, and the first through holes are provided in a one-to-one correspondence with the first threaded holes. The external threaded section of the mounting post passes through the first through hole and is screwed into the first threaded hole. The first positioning posts and the first threaded holes are sequentially arranged in the mounting groove along the edge of the convex edge.

6. The electric pump according to claim 1, characterized in that, The pump housing includes a first housing and a second housing arranged coaxially, with the axial opening of the first housing opposite to the axial opening of the second housing. The bottom housing has a first wire passage hole and a second wire passage hole, with the first wire passage hole corresponding to the first housing and the second wire passage hole corresponding to the second housing.

7. The electric pump according to claim 1, characterized in that, The control component also includes a fixing stud, the bottom shell is provided with a plurality of second threaded holes and a plurality of second positioning pins, the top cover is provided with a second positioning hole and a second through hole, the second positioning hole is provided in a one-to-one correspondence with the second positioning pin, the second through hole is provided in a one-to-one correspondence with the second threaded hole, and one end of the fixing stud passes through the second through hole and is screwed into the second threaded hole.

8. The electric pump according to claim 7, characterized in that, The control assembly also includes a sealing gasket disposed between the top cover and the bottom shell.

9. A chassis system, characterized in that, The electric pump includes any one of claims 1 to 8 above.

10. A vehicle, characterized in that, Includes the chassis system described in claim 9, or the motor pump described in any one of claims 1 to 8.

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