Electro-hydraulic pump driving plate assembly heat dissipation structure and electro-hydraulic pump thereof

Abstract

The utility model discloses an electro-hydraulic pump driving plate assembly heat radiation structure, comprising an upper cover plate, one side of the upper cover plate is provided with an IPM power module, the IPM power module is fixedly connected with the upper cover plate, an efficient heat conduction silicone grease layer is arranged between the IPM power module and the upper cover plate, and the IPM power module is fixedly connected with the upper cover plate. The efficient heat-conducting silicone grease layer is at least used for filling a gap between the IPM power module and the upper cover plate and increasing heat conductivity; one side, far away from the upper cover plate, of the IPM power module is provided with a pin, and the pin passes through a pin hole in the driving plate assembly and is fixed in the pin hole; and the upper cover plate is fixedly connected with the driving plate assembly. The IPM power module is directly attached to the upper cover plate, and the other side of the upper cover plate is provided with the heat dissipation ribs, so that heat on the IPM power module can be effectively dissipated, the heat dissipation effect of the whole electric control system is improved, the operation of a circuit is more stable and reliable, and the service life of the product is prolonged.

Description

Technical Field

[0001] This utility model relates to a heat dissipation structure for an electro-hydraulic pump drive plate assembly and its electro-hydraulic pump, belonging to the field of electric vehicle technology. Background Technology

[0002] With the rapid development of the new energy vehicle industry, the electronic suspension industry has also attracted more and more attention. The integrated electro-hydraulic pump solution (permanent magnet synchronous motor + motor controller + pump) that provides power and control for electronic suspension is highly favored by various OEMs. At the same time, the requirements for the integration of electro-hydraulic pumps are getting higher and higher. As the core drive unit of the electro-hydraulic pump system, the design and installation structure of the electro-hydraulic pump drive board directly affects the performance and reliability of the system.

[0003] The electronic control unit (ECU) and motor typically share a common housing, with the IPM power module on the ECU driver board directly attached to the motor housing for heat dissipation. However, because motors operate at very high temperatures, and some are air-cooled, their internal cooling systems are ineffective at dissipating heat. This leads to excessive temperature rise in the IGBTs or MOSFETs within the IPM power module. These issues not only affect the reliability of the driver board but can also cause the entire system to fail. Therefore, designing an efficient and reliable mounting structure is crucial. Utility Model Content

[0004] To address the shortcomings of existing technologies, the purpose of this utility model is to provide a heat dissipation structure for an electro-hydraulic pump drive board assembly and its electro-hydraulic pump, which improves the heat dissipation efficiency of the drive board assembly, reduces temperature rise, and extends product lifespan.

[0005] To achieve the aforementioned objectives, the technical solution adopted by this utility model includes:

[0006] This utility model discloses a heat dissipation structure for an electro-hydraulic pump drive board assembly, including an upper cover plate. An IPM power module is disposed on one side of the upper cover plate and is fixedly connected to the upper cover plate. A high-efficiency thermally conductive silicone grease layer is disposed between the IPM power module and the upper cover plate. The high-efficiency thermally conductive silicone grease layer is used at least to fill the gap between the IPM power module and the upper cover plate and to increase thermal conductivity. A pin is disposed on the side of the IPM power module away from the upper cover plate. The pin passes through a pin hole on the drive board assembly and is fixed in the pin hole. The upper cover plate is fixedly connected to the drive board assembly.

[0007] Furthermore, the upper cover plate is provided with heat dissipation fins on the side away from the IPM power module, and there are multiple heat dissipation fins.

[0008] Furthermore, the upper cover plate is provided with a protrusion, which is located on the side of the upper cover plate close to the IPM power module. The protrusion corresponds to the position of the IPM power module and is fixedly connected to the IPM power module.

[0009] Another aspect of this utility model discloses an electro-hydraulic pump, including a housing and an electro-hydraulic pump drive plate assembly heat dissipation structure. The electro-hydraulic pump drive plate assembly heat dissipation structure is disposed on the housing, and a thin film capacitor is fixedly connected inside the housing.

[0010] Furthermore, a control board assembly is provided inside the housing, and the control board assembly is connected to the drive board assembly via a wiring harness.

[0011] Furthermore, the drive board assembly is provided with five L-shaped terminals, each comprising a high-voltage positive terminal, a high-voltage negative terminal, a U terminal, a V terminal, and a W terminal. The high-voltage positive terminal is connected to the positive copper busbar of the film capacitor, and the high-voltage negative terminal is connected to the negative copper busbar of the film capacitor. The U terminal is connected to the U-phase line of the motor, the V terminal is connected to the V-phase line of the motor, and the W terminal is connected to the W-phase line of the motor.

[0012] Furthermore, the housing is provided with a high-voltage socket, the positive wiring harness of the high-voltage socket is connected to the high-voltage positive terminal, and the negative wiring harness of the high-voltage socket is connected to the high-voltage negative terminal.

[0013] Compared with the prior art, the advantages of this utility model include:

[0014] 1) The heat dissipation structure of the electro-hydraulic pump drive board assembly provided by this utility model is such that the IPM power module is directly attached to the upper cover plate, and heat dissipation fins are provided on the other side of the upper cover plate, which can effectively dissipate the heat on the IPM power module, improve the heat dissipation effect of the entire electronic control system, make the circuit operation more stable and reliable, and extend the service life of the product.

[0015] 2) The heat dissipation structure of the electro-hydraulic pump drive board assembly provided by this utility model has a high-efficiency thermally conductive silicone grease layer coated between the upper cover plate and the IPM power module. This layer not only fills the gap between the IPM power module and the upper cover plate, but also increases thermal conductivity, greatly improving heat dissipation efficiency and ensuring that the IPM power module can still operate stably under high temperature conditions. Attached Figure Description

[0016] To more clearly illustrate the technical solutions in the embodiments of this application or the prior art, the drawings used in the description of the embodiments or the prior art will be briefly introduced below. Obviously, the drawings described below are only some embodiments recorded in this application. For those skilled in the art, other drawings can be obtained based on these drawings without creative effort.

[0017] Figure 1This is a schematic diagram of a heat dissipation structure for an electro-hydraulic pump drive plate assembly provided in a typical embodiment of this utility model;

[0018] Figure 2 This is a front view of the electro-hydraulic pump provided in a typical embodiment of this utility model;

[0019] Figure 3 This is a sectional view of AA;

[0020] Explanation of reference numerals in the attached drawings: 1. IPM power module; 2. Driver board assembly; 3. Top cover; 4. Heat dissipation fin; 5. Protrusion; 6. Control board assembly; 7. Housing; 8. High voltage socket; 9. Wiring harness; 10. L-shaped terminal; 11. Film capacitor. Detailed Implementation

[0021] In view of the shortcomings of the prior art, the inventor of this case, through long-term research and extensive practice, has come up with the technical solution of this utility model. The following will further explain the technical solution, its implementation process, and its principles.

[0022] This utility model discloses a heat dissipation structure for an electro-hydraulic pump drive plate assembly, such as... Figure 1 As shown, the device includes an upper cover plate 3, on one side of which an IPM power module 1 is disposed. The IPM power module 1 is fixedly connected to the upper cover plate 3. A high-efficiency thermal conductive grease layer is disposed between the IPM power module 1 and the upper cover plate 3. The high-efficiency thermal conductive grease layer can not only fill the gap between the IPM power module 1 and the upper cover plate 3, but also increase thermal conductivity, greatly improving heat dissipation efficiency and ensuring that the IPM power module 1 can still operate stably under high temperature conditions.

[0023] The IPM power module 1 has pins on the side away from the upper cover plate 3. These pins pass through pin holes on the driver board assembly 2 and are fixed within the pin holes, ensuring electrical connection between the IPM power module 1 and the driver board assembly 2. In this embodiment, the pins of the IPM power module 1 are soldered to the solder holes of the driver board assembly 2, ensuring electrical connection between the IPM power module 1 and the driver board assembly 2. The IPM power module 1 is mounted upside down on the upper cover plate 3 and secured with bolts.

[0024] The upper cover plate 3 is fixedly connected to the drive plate assembly 2. Specifically, four threaded holes are pre-machined on the drive plate assembly 2. During installation, four screws are used to pass through the threaded holes to fix the drive plate assembly 2 to the upper cover plate 3, ensuring the stability and reliability of the fixation between the drive plate assembly 2 and the upper cover plate 3. This fixing method not only facilitates installation and disassembly but also effectively reduces the impact of vibration and shock on the drive plate assembly 2.

[0025] To further improve heat dissipation efficiency, multiple heat dissipation fins 4 are provided on the side of the upper cover plate 3 away from the IPM power module 1. These multiple heat dissipation fins 4 can be arranged in an array or not; in this embodiment, to achieve more efficient and uniform heat dissipation, multiple heat dissipation fins 4 are arranged in an array on the upper cover plate 3. The multiple heat dissipation fins 4 significantly increase the heat dissipation surface area, effectively dissipating heat into the air through convection and conduction, reducing temperature rise, and improving service life.

[0026] Based on the above, a protrusion 5 is provided on the upper cover plate 3. The protrusion 5 is located on the side of the upper cover plate 3 closest to the IPM power module 1. The protrusion 5 corresponds to the position of the IPM power module 1 and is fixedly connected to the IPM power module 1. The protrusion 5 is precision machined to ensure the flatness of the IPM power module 1 during installation. Before installing the IPM power module 1, a high-efficiency thermal grease is applied to the IPM power module 1 to form a high-efficiency thermal grease layer. The thermal grease can fill the gap between the protrusion and the IPM power module 1, increasing the thermal conductivity of the IPM power module 1.

[0027] Another aspect of this utility model discloses an electro-hydraulic pump, such as Figure 2 , Figure 3 As shown, the device includes a housing 7 and a heat dissipation structure for the electro-hydraulic pump drive board assembly. The heat dissipation structure for the electro-hydraulic pump drive board assembly is mounted on the housing 7. A thin-film capacitor 11 is fixedly connected inside the housing 7, specifically, the thin-film capacitor 11 is fixed to the housing 7 by fixing bolts. During assembly, the upper cover plate 3, drive board assembly 2, and IPM power module 1 are pre-assembled and then installed onto the housing 7 as a whole.

[0028] Based on the above, a control board assembly 6 is provided inside the housing 7. The control board assembly 6 is connected to the drive board assembly 2 via a wiring harness 9 to ensure internal communication.

[0029] In some implementations, the drive board assembly 2 is provided with five L-shaped terminals 10. Each of the five L-shaped terminals 10 includes a high-voltage positive terminal, a high-voltage negative terminal, a U terminal, a V terminal, and a W terminal. The high-voltage positive terminal is connected to the positive copper busbar of the film capacitor 11, and the high-voltage negative terminal is connected to the negative copper busbar of the film capacitor 11. The U terminal is connected to the U-phase line of the motor, the V terminal is connected to the V-phase line of the motor, and the W terminal is connected to the W-phase line of the motor, ensuring three-phase output.

[0030] In some implementations, a high-voltage socket 8 is provided on the housing 7. The positive wiring harness 9 of the high-voltage socket 8 is connected to the high-voltage positive terminal, and the negative wiring harness 9 of the high-voltage socket 8 is connected to the high-voltage negative terminal, ensuring direct input of external power.

[0031] It should be understood that the above embodiments are merely illustrative of the technical concept and features of this utility model, and are intended to enable those skilled in the art to understand the content of this utility model and implement it accordingly. They should not be construed as limiting the scope of protection of this utility model. All equivalent changes or modifications made in accordance with the spirit and essence of this utility model should be included within the scope of protection of this utility model.

Claims

1. A heat dissipation structure for an electro-hydraulic pump drive plate assembly, characterized in that: The device includes a top cover plate, on one side of which an IPM power module is fixedly connected. A high-efficiency thermal grease layer is disposed between the IPM power module and the top cover plate. The high-efficiency thermal grease layer is used at least to fill the gap between the IPM power module and the top cover plate and to increase thermal conductivity. A pin is disposed on the side of the IPM power module away from the top cover plate. The pin passes through a pin hole on the driver board assembly and is fixed in the pin hole. The top cover plate is fixedly connected to the driver board assembly.

2. The heat dissipation structure of the electro-hydraulic pump drive plate assembly according to claim 1, characterized in that: The upper cover plate has heat dissipation ribs on the side away from the IPM power module, and there are multiple heat dissipation ribs.

3. The heat dissipation structure for an electro-hydraulic pump drive plate assembly according to claim 1, characterized in that: The upper cover plate is provided with a protrusion, which is located on the side of the upper cover plate close to the IPM power module. The protrusion corresponds to the position of the IPM power module and is fixedly connected to the IPM power module.

4. An electro-hydraulic pump, characterized in that: The device includes a housing and a heat dissipation structure for the electro-hydraulic pump drive plate assembly as described in any one of claims 1-3, wherein the heat dissipation structure for the electro-hydraulic pump drive plate assembly is disposed on the housing, and a thin film capacitor is fixedly connected inside the housing.

5. An electro-hydraulic pump according to claim 4, characterized in that: The housing contains a control board assembly, which is connected to the drive board assembly via a wiring harness.

6. An electro-hydraulic pump according to claim 5, characterized in that: The drive board assembly is provided with five L-shaped terminals, each including a high-voltage positive terminal, a high-voltage negative terminal, a U terminal, a V terminal, and a W terminal. The high-voltage positive terminal is connected to the positive copper busbar of the film capacitor, and the high-voltage negative terminal is connected to the negative copper busbar of the film capacitor. The U terminal is connected to the U-phase line of the motor, the V terminal is connected to the V-phase line of the motor, and the W terminal is connected to the W-phase line of the motor.

7. An electro-hydraulic pump according to claim 5, characterized in that: The housing is provided with a high-voltage socket, the positive wiring harness of the high-voltage socket is connected to the high-voltage positive terminal, and the negative wiring harness of the high-voltage socket is connected to the high-voltage negative terminal.

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