Power device and power supply system

Abstract

The utility model provides power equipment and a power supply system, and belongs to the technical field of heat dissipation. The power equipment comprises a shell and a pipeline sealing structure. The pipeline sealing structure comprises a pipeline connector, a sealing block, a flexible pad and a sealing ring. The pipeline connector is located in the shell, the sealing block is installed on the shell wall of the shell, and the position of the sealing block is opposite to the position of the pipeline connector. The flexible pad is located between the sealing block and the pipeline connector, and the sealing ring is located between the sealing block and the shell wall of the shell. When the pipeline sealing structure is applied to the power equipment, the problem that the pipeline joint is difficult to assemble due to tolerance can be solved, and the protection grade of the shell of the power equipment can also be improved.

Description

Technical Field

[0001] The present disclosure relates to the field of heat dissipation technology, and in particular to a power device and a power supply system. Background Art

[0002] Power devices, also known as power conversion devices, such as DC-DC power supply devices and AC-DC power supply devices, are all power devices. These power devices generate heat during operation, so liquid cooling systems are generally arranged inside them to dissipate heat from the heating elements.

[0003] Liquid cooling systems primarily include cooling coils, heat exchangers, and pipe joints. The cooling coils are made of several coiled pipes and are placed near (e.g., attached to) the heating element of the power device to absorb heat. Heat exchangers are typically located in air ducts to exchange heat. Pipe joints are mounted on the shell of the power device and include a liquid inlet and outlet for connection to external pipes. The cooling coils, heat exchangers, and pipe joints are connected by pipes, through which the liquid used to cool the heating element flows.

[0004] Liquid cooling systems are prone to assembly tolerances during assembly, which, combined with processing tolerances, make it difficult to assemble power equipment. Utility Model Content

[0005] The present disclosure provides a power device and a power supply system, which can improve the problem of difficulty in assembling a liquid cooling and heat dissipation system of the power device due to tolerance.

[0006] In a first aspect, the present disclosure provides a power device, the power device comprising a housing and a pipeline sealing structure, the pipeline sealing structure comprising a pipeline joint, a sealing block, a flexible gasket and a sealing ring;

[0007] The pipe joint is located in the housing, and the sealing block is installed on the shell wall of the housing, and the position of the sealing block is opposite to the position of the pipe joint;

[0008] The flexible pad is located between the sealing block and the pipe joint, and the sealing ring is located between the sealing block and the shell wall of the shell.

[0009] In the solution disclosed herein, a liquid cooling and heat dissipation system assembled within a power device comprises a pipe sealing structure including a pipe joint, a sealing block, a flexible pad, and a sealing ring. The pipe joint is located within the housing of the power device, a portion of the sealing block extends into the housing, opposite the pipe joint, the flexible pad is compressed between the sealing block and the pipe joint, another portion of the sealing block is fixed to the housing wall, and the sealing ring is located between the sealing block and the outer surface of the housing wall. Thus, the flexible pad is flexible and has a certain amount of compression, capable of absorbing tolerances. The flexible pad also serves as a seal, while the sealing ring primarily serves as a seal and can also absorb tolerances. Thus, the application of this liquid cooling and heat dissipation system in power devices can alleviate assembly difficulties caused by tolerances and improve the protection level of the housing of the power components.

[0010] In a possible implementation, the sealing block includes a main body portion and a boss portion protruding relative to a side surface of the main body portion;

[0011] The main body extends into the shell, and the boss portion is fixed to the shell wall of the shell;

[0012] The flexible pad is located between the main body and the pipe joint, and the sealing ring is sleeved outside the main body and located between the boss and the outer surface of the shell wall of the shell.

[0013] In the solution disclosed herein, the sealing block includes a main body and a boss. The boss is located at one end of the main body and protrudes circumferentially relative to the side of the main body. The shape of the main body matches the shape of the mounting opening on the shell. The circumferential size of the main body is smaller than the circumferential size of the mounting opening, and the circumferential size of the mounting opening is smaller than the circumferential size of the boss. In this way, the main body can pass through the mounting opening of the shell and extend into the shell, while the boss cannot pass through the mounting opening and extend into the shell. Therefore, the boss is hooked on the shell wall around the mounting opening. In this way, a portion of the sealing block passes through the mounting opening and extends into the shell, opposite the position of the pipe joint, while the other portion of the sealing block is outside the shell and fixedly connected to the shell wall.

[0014] In order to absorb tolerances and improve the protection level of the housing, the flexible pad is compressed between the body part and the pipe joint, and the sealing ring is sealed between the boss part and the shell wall of the housing.

[0015] In a possible implementation, an annular sealing groove is provided on a surface of the boss portion facing the main body portion, and the sealing ring is located in the annular sealing groove.

[0016] In a possible implementation, the sealing ring located in the annular sealing groove protrudes from the annular sealing groove.

[0017] In the solution disclosed herein, the boss portion has an annular sealing groove on its surface. The groove is annular, with its opening located on the boss portion's surface. The groove width matches the width of the sealing ring, and the groove depth is less than the thickness of the sealing ring. This allows the sealing ring to be positioned within the groove, with a portion extending beyond the groove. The portion of the sealing ring extending beyond the groove abuts against the outer surface of the housing wall. During assembly, the sealing ring can be first inserted into the boss portion's annular sealing groove, and then the sealing block can be mounted on the housing wall.

[0018] Moreover, during the later disassembly and assembly of the pipe joint and the sealing block, as long as the sealing ring is not damaged, the sealing ring can always be in the annular sealing groove. Although the sealing ring is relatively small, it is not easy to lose.

[0019] In a possible implementation, the boss portion and the shell wall of the shell are fixed by screws.

[0020] In the solution shown in the present disclosure, the boss portion and the shell wall can be fixedly connected by screws, or by bolts and nuts.

[0021] In a possible implementation, the sealing block has a positioning pin on its end surface facing the pipe joint, and the pipe joint has a positioning hole on its end surface facing the sealing block, and the positioning pin passes through the flexible pad and is inserted into the positioning hole.

[0022] In the solution shown in the present disclosure, since the end face of the sealing block has a positioning pin and the end face of the pipe joint has a positioning hole, in the process of fixing the sealing block on the shell wall, the positioning pin on the sealing block is first aligned with the positioning hole on the pipe joint, and the sealing block is continued to be pushed into the installation port, and the positioning pin is inserted into the positioning hole to achieve alignment between the sealing block and the pipe joint, and the position of the pipe joint is positioned and corrected.

[0023] Moreover, the crimping between the sealing block and the pipe joint realizes axial fixation of the pipe joint, and the cooperation between the locating pin and the locating hole realizes circumferential fixation of the pipe joint, thereby firmly fixing the pipe joint at the installation port of the shell from all angles, thereby realizing fixation of the pipe joint.

[0024] In a possible implementation, there are two positioning pins, which are diagonally distributed on the end face of the sealing block; and there are two positioning holes, which are diagonally distributed on the end face of the pipe joint.

[0025] In the solution shown in the present disclosure, there are two positioning pins, which are diagonally distributed, and there are two positioning holes, which are diagonally distributed. This allows for positioning between the pipe joint and the sealing block, as well as position correction of the pipe joint, using a smaller number of positioning pins.

[0026] In a possible implementation, the flexible pad is a foam rubber ring processed by a foam molding process.

[0027] In the solution shown in the present disclosure, the flexible pad is made through a foaming process, and its compression capacity is relatively large, which is conducive to absorbing tolerances.

[0028] In a possible implementation, the pipeline joint is a liquid inlet and outlet pipeline joint, and the pipeline joint has a liquid inlet and a liquid outlet.

[0029] In the solution shown in the present disclosure, the number of pipe joints can be one, and this pipe joint is specifically an inlet and outlet pipe joint. Then, the pipe joint has a liquid inlet and a liquid outlet, that is, the liquid inlet and the liquid outlet are integrated on one pipe joint.

[0030] In a possible implementation, there are two pipeline joints, one is a liquid inlet pipeline joint, and the other is a liquid outlet pipeline joint. The liquid inlet pipeline joint has a liquid inlet, and the liquid outlet pipeline joint has a liquid outlet.

[0031] In one possible implementation, the power device includes a cooling coil, a heat exchanger, and a plurality of cooling pipes, and the cooling coil, the heat exchanger, and the plurality of cooling pipes are all located in the housing;

[0032] The liquid inlet of the cooling coil and the liquid inlet of the heat exchanger are both connected to the liquid inlet of the pipe joint through the cooling pipeline, and the liquid outlet of the cooling coil and the liquid outlet of the heat exchanger are both connected to the liquid outlet of the pipe joint through the cooling pipeline.

[0033] In the solution disclosed herein, the liquid inlet of the pipe joint includes a first liquid inlet, a second liquid inlet, and a third liquid inlet, and the liquid outlet of the pipe joint includes a first liquid outlet, a second liquid outlet, and a third liquid outlet, wherein the first liquid inlet and the first liquid outlet are used to connect to the cooling device. The second liquid inlet is connected to the liquid inlet of the cooling coil via a cooling pipeline, and the second liquid outlet is connected to the liquid outlet of the cooling coil via a cooling pipeline. The third liquid inlet is connected to the liquid inlet of the heat exchanger via a cooling pipeline, and the third liquid outlet is connected to the liquid outlet of the heat exchanger via a cooling pipeline.

[0034] In this way, the coolant with a lower temperature entering from the liquid inlet of the pipe joint flows to the cooling coil and the heat exchanger through the cooling pipe. The coolant with a higher temperature flowing out of the cooling coil and the heat exchanger flows to the liquid outlet of the pipe joint and is discharged outward through the liquid outlet of the pipe joint.

[0035] In a second aspect, the present disclosure provides a power supply system, which includes a cooling device and the power device described in the first aspect, wherein the liquid inlet of the pipe joint and the liquid outlet of the cooling device are connected by a pipe, and the liquid outlet of the pipe joint and the liquid inlet of the cooling device are connected by a pipe. BRIEF DESCRIPTION OF THE DRAWINGS

[0036] Figure 1 It is a structural diagram of a power device provided by the prior art;

[0037] Figure 2 is a structural diagram of a power device provided by an exemplary embodiment of the present disclosure;

[0038] Figure 3 1 is a schematic diagram showing a pipeline sealing structure 20 provided by an exemplary embodiment of the present disclosure being assembled on the shell wall of a shell 10;

[0039] Figure 4 is a structural schematic diagram of a pipe joint provided by an exemplary embodiment of the present disclosure;

[0040] Figure 5 is an exploded schematic diagram of a sealing block, a sealing ring, and a flexible pad provided by an exemplary embodiment of the present disclosure before assembly;

[0041] Figure 6 is a schematic structural diagram of an assembled sealing block, a sealing ring, and a flexible pad provided by an exemplary embodiment of the present disclosure;

[0042] Figure 7 FIG. 1 is a schematic diagram of a power supply system according to an exemplary embodiment of the present disclosure.

[0043] Description of Reference Numerals

[0044] 10. Shell; 101. Mounting port; 20. Pipeline sealing structure; 30. Heating element; 40. Cooling coil; 50. Heat exchanger; 60. Cooling pipeline.

[0045] 1. Pipeline connector; 11. Positioning hole; 12. First liquid inlet; 13. Second liquid inlet; 14. Third liquid inlet; 15. First liquid outlet; 16. Second liquid outlet; 17. Third liquid outlet.

[0046] 2. Sealing block; 21. Main body; 22. Boss; 211. Positioning pin; 221. Annular sealing groove; 3. Flexible pad; 4. Sealing ring.

[0047] 100. Power equipment; 200. Cooling equipment. DETAILED DESCRIPTION

[0048] In order to make the objectives, technical solutions and advantages of the present disclosure more clear, the embodiments of the present disclosure will be further described in detail below with reference to the accompanying drawings.

[0049] This embodiment relates to a power device, which can also be called a power conversion device. The power conversion device can specifically be a power supply device, such as a direct current direct current (DCDC) power supply device and an alternating current direct current (ACDC) power supply device.

[0050] When power equipment is working, its internal components will generate heat, causing the internal temperature of the power equipment to be high. Once the temperature is high, it will affect the normal operation of the power equipment. Therefore, in order to maintain the internal temperature of the power equipment within a normal range, a heat dissipation system is generally arranged inside the power equipment. The more common heat dissipation system is the liquid cooling system. The main component of the liquid used is water, so the liquid cooling system is also called a water-cooled cooling system. The coolant circulates in the cooling pipes of the liquid cooling system to dissipate heat for the heating components of the power equipment.

[0051] However, the liquid cooling system will produce assembly tolerances when it is arranged inside the power device. For example, Figure 1 As shown, when the cooling pipe 60 of the liquid cooling system is turning, the actual turning angle and the theoretical turning angle may easily deviate. Once the deviation occurs, assembly tolerance will be generated. In addition, the various structural components of the liquid cooling system (such as cooling coils, heat exchangers and pipe joints, etc.) will also have processing tolerances during processing and manufacturing. It can be seen that the liquid cooling system has large tolerances in assembly. Most of the structural components in the liquid cooling system are rigid components. For example, the cooling pipe 60 is a metal pipe, and the pipe joint 1 is also a rigid component. These rigid components are also difficult to absorb tolerances during connection and assembly. Therefore, there is a problem of assembly difficulty in the power equipment. In particular, during the process of assembling the pipe joint 1 on the shell wall of the shell 10, it is easy for the sealing between the pipe joint 1 and the shell wall to be poor, resulting in the protection level of the shell 10 failing to meet the requirements, and even the pipe joint 1 cannot be installed on the shell wall.

[0052] In the prior art, in order to solve the above-mentioned problem, a solution usually adopted is to replace a part of the cooling pipe 60 inside the shell 10 with a soft pipe, that is, the cooling pipe 60 includes a metal pipe and a soft pipe, and the tolerance is absorbed by the soft pipe. However, this solution requires connecting the metal pipe and the soft pipe, and the connection process involves a sealed connection to ensure that the liquid in the pipe does not flow out. Moreover, the material of the soft pipe is mostly organic, such as silicone, which has poor heat dissipation.

[0053] To this end, this embodiment provides a power device, wherein the liquid cooling and heat dissipation system of the power device includes a pipeline sealing structure, which includes not only a pipeline joint 1, but also a sealing block 2, a flexible pad 3, and a sealing ring 4. The sealing block 2 and the pipeline joint 1 are crimped together, and the flexible pad 3 is compressed between the pipeline joint 1 and the sealing block 2 to absorb tolerances. The sealing block 2 is fixed to the shell wall of the housing 10, and the sealing block 2 and the shell wall are sealed by the sealing ring 4. In this way, the flexible pad 3 absorbs tolerances, which can simplify the assembly of the liquid cooling and heat dissipation system. The dual sealing of the flexible pad 3 and the sealing ring 4 can improve the sealing performance of the housing 10 at the pipeline joint 1, thereby improving the protection level of the housing 10. After testing, the protection level of the power device housing can reach IP65. The assembly of the liquid cooling and heat dissipation system within the power device will be described in detail below.

[0054] First, we introduce the framework of power equipment, such as Figure 2 The following is a schematic diagram of the power equipment frame structure, refer to Figure 2 As shown, the power device includes a shell 10, a pipe sealing structure 20, a heating element 30, a cooling coil 40, a heat exchanger 50 and a plurality of cooling pipes 60, wherein the heating element 30, the cooling coil 40, the heat exchanger 50 and the cooling pipes 60 are all located in the shell 10, and the pipe sealing structure 20 is sealed and installed on the shell wall of the shell 10.

[0055] The heating element 30 is a component that generates a lot of heat and needs to be dissipated, such as a chip or power tube within a power device. The cooling coil 40, a heat sink made of a plurality of coiled pipes and also known as a liquid cooling plate, primarily dissipates heat from the high-heat-generating heating elements within the power device.

[0056] The heat exchanger 50 is used for heat exchange, and is also called a heat exchanger or an air-liquid exchanger. It is generally arranged in the air duct. The coolant in the heat exchanger 50 exchanges heat with the air in the shell 10 to cool the air in the shell 10 and dissipate heat for components in the shell 10 with lower heat generation, such as inductors, capacitors, relays, etc.

[0057] The pipeline sealing structure 20 includes a pipeline joint 1, which includes a liquid inlet and a liquid outlet. The liquid inlet is used to receive the coolant with a lower temperature transported from the outside and transport the coolant to the internal cooling coil 40 and heat exchanger 50. The liquid outlet is used to discharge the coolant after absorbing heat to the outside for cooling.

[0058] refer to Figure 2 As shown, the cooling coil 40 is adjacent to the heating element 30, absorbing the heat of the heating element 30 and dissipating the heat for the heating element 30. Figure 2 As shown, the liquid inlet of the pipe joint 1 is connected to the liquid inlet of the cooling coil 40 via a cooling pipe 60, the liquid outlet of the cooling coil 40 is connected to the liquid outlet of the pipe joint 1 via a cooling pipe 60, the liquid inlet of the pipe joint 1 is connected to the liquid inlet of the heat exchanger 50 via a cooling pipe 60, and the liquid outlet of the heat exchanger 50 is also connected to the liquid outlet of the pipe joint 1 via a cooling pipe 60.

[0059] Thus, the coolant entering through the liquid inlet of pipe connector 1 flows through cooling pipe 60 to cooling coil 40 and heat exchanger 50. The coolant flowing out of cooling coil 40 and heat exchanger 50, the coolant with a higher temperature, flows to the liquid outlet of pipe connector 1 and is discharged outward through the liquid outlet of pipe connector 1. The coolant entering through the liquid inlet of pipe connector 1 comes from the cooling device, and the coolant discharged through the liquid outlet of pipe connector 1 is also discharged to the cooling device. This will be explained later in the description of the power supply system including the power device and the cooling device.

[0060] The above is an introduction to the framework of the power device. The following describes the features of the pipeline sealing structure 20 and its assembly on the housing 10.

[0061] like Figure 3 FIG. 2 is a partial schematic diagram of the pipe sealing structure 20 of the liquid cooling system being assembled on the shell wall of the shell 10, referring to FIG. Figure 3 As shown, the pipeline sealing structure 20 includes a pipeline joint 1, a sealing block 2, a flexible pad 3 and a sealing ring 4. Figure 3 As shown, a mounting opening 101 is provided on the shell wall of the shell 10, the pipe connector 1 is located in the shell 10 and is positioned opposite to the mounting opening 101, the sealing block 2 is fixed in the mounting opening 101, and the flexible pad 3 is located between the pipe connector 1 and the sealing block 2, and the sealing ring 4 is located between the sealing block 2 and the shell wall of the shell 10, wherein the flexible pad 3 is in a compressed state between the pipe connector 1 and the sealing block 2, and the sealing ring 4 is also in a compressed state between the sealing block 2 and the shell wall of the shell 10.

[0062] It should be noted that, unless otherwise specified, the shell wall of the shell 10 described in this embodiment refers to a structural member having a thickness and including an inner surface facing the interior of the shell and an outer surface facing the exterior of the shell.

[0063] In this way, because the flexible pad 3 is flexible and has a certain amount of compression, it can absorb the assembly tolerance caused by assembly and the processing tolerance caused by processing. The flexible pad 3 is compressed between the pipe joint 1 and the sealing block 2, and can also absorb the gap between the pipe joint 1 and the sealing block 2. Therefore, the flexible pad 3 plays the role of absorbing tolerance and sealing. The sealing block 2 and the shell wall of the shell 10 are sealed by the sealing ring 4, which absorbs the assembly gap between the sealing block 2 and the shell 10. Because the sealing block 2 also has a certain degree of flexibility, it can also absorb some tolerance. It can be seen that the pipeline sealing structure 20 plays the role of double sealing and double tolerance absorption in the assembly of the liquid cooling system, which can improve the assembly difficulty caused by tolerance.

[0064] In one example, the number of pipe connectors 1 can be one, specifically, it can be a liquid inlet pipe connector, the pipe connector 1 has a liquid inlet, or, the pipe connector 1 can also be a liquid outlet pipe connector, the pipe connector 1 has a liquid outlet, or, the pipe connector 1 can also be an inlet and outlet pipe connector, the pipe connector 1 has a liquid inlet and a liquid outlet.

[0065] In another example, the number of the pipe connectors 1 may be two, one pipe connector 1 being a liquid inlet pipe connector having a liquid inlet, and the other pipe connector 1 being a liquid outlet pipe connector having a liquid outlet.

[0066] This embodiment does not limit the number of pipe connectors 1. For example, one pipe connector 1 is used as an inlet and outlet pipe connector. Figure 4 As shown, it is a schematic diagram of the structure of the pipe joint 1, refer to Figure 4 As shown, the pipe connector 1 has a liquid inlet and a liquid outlet.

[0067] In one example, since the liquid inlet of the pipe joint 1 is connected to the cooling coil 40 and the heat exchanger 50 internally, and is connected to the cooling device externally, Figure 4 As shown, it is a schematic diagram of the structure of the pipe joint 1. Figure 4 (a) is a schematic diagram showing the end face facing the sealing block 2. Figure 4 (b) is a schematic diagram showing the end face facing away from the sealing block 2, refer to Figure 4 As shown in (a), the end face of the pipe joint 1 facing the sealing block 2 has a first liquid inlet 12 and a first liquid outlet 15. The first liquid inlet 12 is used to be connected to the liquid outlet of the cooling device through a pipe, and the first liquid outlet 15 is used to be connected to the liquid inlet of the cooling device through a pipe.

[0068] refer to Figure 4 As shown in (b), the end surface of the pipe connector 1 facing away from the sealing block 2 has a second liquid inlet 13 and a third liquid inlet 14. The second liquid inlet 13 is used to connect to the liquid inlet of the cooling coil 40 via the cooling pipeline 60, and the third liquid inlet 14 is used to connect to the liquid inlet of the heat exchanger 50 via the cooling pipeline 60. The second liquid inlet 13 is connected to the first liquid inlet 12, and the third liquid inlet 14 is connected to the first liquid inlet 12. In this way, the low-temperature coolant entering from the first liquid inlet 12 of the pipe connector 1 can flow into the cooling coil 40 through the second liquid inlet 13 and the cooling pipeline 60, and can also flow into the heat exchanger 50 through the third liquid inlet 14 and the cooling pipeline 60.

[0069] Continue to refer Figure 4 As shown in (b), the end surface of the pipe joint 1 facing away from the sealing block 2 has a second liquid outlet 16 and a third liquid outlet 17. The second liquid outlet 16 is used to connect to the liquid outlet of the cooling coil 40 through the cooling pipe 60, and the third liquid outlet 17 is used to connect to the liquid outlet of the heat exchanger 50. The second liquid outlet 16 is connected to the first liquid outlet 15, and the third liquid outlet 17 is connected to the first liquid outlet 15. In this way, the high-temperature coolant discharged from the cooling coil 40 can flow through the second liquid outlet 16 and the cooling pipe 60 to the first liquid outlet 15 of the pipe joint 1 and be discharged externally through the first liquid outlet 15 (i.e., discharged into the cooling device). Similarly, the high-temperature coolant discharged from the heat exchanger 50 can flow through the third liquid outlet 17 and the cooling pipe 60 to the first liquid outlet 15 of the pipe joint 1 and be discharged externally through the first liquid outlet 15 (i.e., discharged into the cooling device).

[0070] Based on the above, reference Figure 4 As shown, the liquid inlet of the pipe joint 1 includes a first liquid inlet 12, a second liquid inlet 13 and a third liquid inlet 14, and the liquid outlet of the pipe joint 1 includes a first liquid outlet 15, a second liquid outlet 16 and a third liquid outlet 17, wherein the first liquid inlet 12 and the first liquid outlet 15 are used to connect to the cooling equipment, the second liquid inlet 13 and the second liquid outlet 16 are used to connect to the cooling coil 40, and the third liquid inlet 14 and the third liquid outlet 17 are used to connect to the heat exchanger 50.

[0071] In one example, since the sealing block 2 needs to be inserted into the installation opening 101 and pressed against the pipe joint 1, and also needs to be fixedly connected to the shell wall of the shell 10, Figure 5 The figure shows an exploded view of the sealing block 2, the flexible pad 3 and the sealing ring 4 before assembly. Figure 5As shown, the sealing block 2 includes a body portion 21 and a boss portion 22. The body portion 21 is adapted to fit within the mounting opening 101 of the housing 10. For example, if the mounting opening 101 is quadrilateral, the body portion 21 is a columnar quadrilateral structure. For another example, if the mounting opening 101 is circular, the body portion 21 is a cylindrical structure. The present embodiment does not impose any restrictions on the shape of the body portion 21; it only needs to fit within the mounting opening 101.

[0072] Continue to refer Figure 5 As shown, the boss portion 22 of the sealing block 2 is raised relative to the side of the main body portion 21 to form a boss structure for being hung on the shell wall around the installation opening 101 and fixedly connected to the shell wall around the installation opening 101 .

[0073] So, continue to refer to Figure 3 As shown, the main body 21 passes through the installation opening 101 and extends into the housing 10, and is pressed against the pipe connector 1, and the flexible pad 3 is located between the main body 21 and the pipe connector 1 in a compressed state. Figure 3 As shown, the boss portion 22 is hung on the shell wall of the shell 10, and the sealing ring 4 is sleeved on the outside of the main body 21 and is located between the boss portion 22 and the outer surface of the shell wall of the shell 10. The sealing ring 4 plays the role of sealing the gap between the boss portion 22 and the shell 10.

[0074] In one example, reference Figure 3 As shown, since the cooling pipe 60 connected to the pipe connector 1 is fixed in the shell 10, the boss portion 22 of the sealing block 2 is fixed to the shell wall of the shell 10. Therefore, the pipe connector 1 and the main body 21 of the sealing block 2 can be crimped, and there is no need to fix the pipe connector 1 and the main body 21 with screws, thereby simplifying the assembly between the pipe connector 1 and the sealing block 2.

[0075] It should be noted that the main body portion 21 and the boss portion 22 may be integrally formed to form the sealing block 2 , or the main body portion 21 and the boss portion 22 may be two independent structures that are fixed to form the sealing block 2 .

[0076] It should be noted that, since the first liquid inlet and the first liquid outlet of the pipe joint 1 are to be connected to the external pipe, Figure 5 As shown, the main body 21 of the sealing block 2 has a through hole, and the flexible pad 3 has a through hole. The first liquid inlet 12 and the first liquid outlet 15 of the pipe connector 1 are exposed through the through holes of the sealing block 2 and the flexible pad 3.

[0077] In one example, reference Figure 5As shown, the inner surface of the boss portion 22 facing the body portion 21 includes an annular sealing groove 221. The opening of the annular sealing groove 221 is located on the inner surface of the boss portion 22. The width of the annular sealing groove 221 matches the width of the sealing ring 4. For example, the width of the annular sealing groove 221 is slightly smaller than the width of the sealing ring 4, allowing the sealing ring 4 to fit within the annular sealing groove 221 with an interference fit. The depth of the annular sealing groove 221 is less than the thickness of the sealing ring 4. Thus, a portion of the sealing ring 4 is embedded in the annular sealing groove 221, while another portion protrudes from the annular sealing groove 221. Thus, during assembly, the sealing ring 4 can be first inserted into the annular sealing groove 221 of the boss portion 22, and then the sealing block 2 can be installed on the shell wall of the housing 10. Furthermore, during subsequent disassembly of the pipe connector 1 and the sealing block 2, as long as the sealing ring 4 is not damaged, it can remain in the annular sealing groove 221. This makes the sealing ring 4, despite its relatively small size, less likely to be lost.

[0078] In one example, the boss portion 22 can be fixedly connected to the shell wall of the shell 10 by screws. During the tightening process, the screws compress the flexible pad 3 between the sealing block 2 and the pipe connector 1, and also compress the sealing ring 4 between the sealing block 2 and the shell wall of the shell 10.

[0079] refer to Figure 5 As shown, the boss portion 22 of the sealing block 2 has screw holes (which can also be bare holes) around it, and the shell wall of the shell 10 also has screw holes arranged around the mounting opening 101. In this way, the screws can pass through the screw holes of the boss portion 22 and be screwed into the screw holes on the shell wall of the shell 10.

[0080] In another example, the boss portion 22 and the shell wall of the shell 10 can also be connected by bolts and nuts. For example, the boss portion 22 has multiple bare holes, and the shell wall of the shell 10 also has multiple bare holes near the installation port 101. The bolts pass through the bare holes of the boss portion 22 and the bare holes on the shell wall of the shell 10 in turn, and the nuts are screwed on the bolts.

[0081] In one example, in order to align the sealing block 2 with the pipe joint 1 and realize the crimping of the two, accordingly, reference is made to Figure 5 As shown, the inner end surface of the sealing block 2 facing the pipe joint 1 has a positioning pin 211, for example, the main body 21 of the sealing block 2 has a positioning pin 211, refer to Figure 4 As shown, the pipe joint 1 has a positioning hole 11 on the outer end surface facing the sealing block 2. Figure 3 As shown, the positioning pin 211 passes through the flexible pad 3 and is located in the positioning hole 11 .

[0082] In this way, in the process of fixing the sealing block 2 on the shell wall of the shell 10, the positioning pin 211 on the sealing block 2 is first aligned with the positioning hole 11 on the pipe connector 1, and the sealing block 2 continues to be pushed into the installation port 101, and the positioning pin 211 is inserted into the positioning hole 11 to achieve the alignment of the sealing block 2 and the pipe connector 1, and the position of the pipe connector 1 is positioned and corrected.

[0083] Moreover, reference Figure 3 As shown, the crimping between the sealing block 2 and the pipe connector 1 realizes axial fixation of the pipe connector 1, and the cooperation between the positioning pin 211 and the positioning hole 11 realizes circumferential fixation of the pipe connector 1, thereby firmly fixing the pipe connector 1 at the installation port 101 of the shell 10.

[0084] In one example, in order to more easily insert the positioning pin 211 into the positioning hole 11, the positioning hole 11 has a guide structure on the outer end surface of the pipe joint 1. For example, referring to Figure 4 As shown, the positioning hole 11 is a trumpet-shaped hole. The part close to the outer end surface of the pipe connector 1 is a trumpet-shaped hole with a larger radial opening size, and the part away from the outer end surface of the pipe connector 1 is a cylindrical hole. Then, under the action of the guide structure, the positioning pin 211 can be smoothly inserted into the positioning hole 11.

[0085] In one example, the number of positioning pins 211 can be one, and the number of positioning holes 11 is also one. Then, through the cooperation between the main body 21 of the sealing block 2 and the mounting port 101, and the cooperation between the positioning pins 211 and the positioning holes 11, the effect of positioning and correcting the position of the pipe connector 1 in the housing 10 can also be achieved.

[0086] In another example, there are multiple positioning pins 211, and the number of positioning holes 11 is equal to the number of positioning pins 211. The positioning cooperation between multiple positioning pins 211 and positioning holes 11 is beneficial to position correction and positioning of the pipe connector 1.

[0087] For example, reference Figure 5 As shown, there are two positioning pins 211, and the two positioning pins 211 are diagonally distributed on the inner end surface of the main body 21, wherein the inner end surface of the main body 21 is also the end surface located inside the housing 10. Figure 4 As shown, there are also two positioning holes 11 , which are diagonally distributed on the outer end face of the pipe connector 1 , wherein the outer end face of the pipe connector 1 is also the end face facing the installation port 101 .

[0088] It should be pointed out that since the positioning pin 211 on the sealing block 2 cooperates with the positioning hole 11 on the pipe connector 1, the flexible pad 3 is compressed between the inner end face of the sealing block 2 and the outer end face of the pipe connector 1, wherein the inner end face of the sealing block 2 is also the inner end face of the main body 21, so the flexible pad 3 has through holes, and the number of through holes is equal to the number of positioning pins 211. In this way, the positioning pin 211 can pass through the through holes on the flexible pad 3 and be inserted into the positioning hole 11 on the pipe connector 1.

[0089] It should be pointed out that the positioning pin can also be provided on the pipe joint 1, and the positioning hole can be provided on the sealing block.

[0090] In one example, because both the flexible pad 3 and the sealing ring 4 have a certain degree of compression elasticity, they can be made of silicone. For example, the sealing ring 4 primarily serves as a seal, so it can be a solid rubber ring, while the flexible pad 3 primarily serves to absorb tolerances, so it can be a foamed rubber ring. A foamed rubber ring is a rubber ring made through a foaming process. Since the flexible pad 3 is made through a foaming process, it has a relatively large compression capacity, which is conducive to absorbing tolerances.

[0091] In one example, because both the flexible pad 3 and the sealing ring 4 can accommodate tolerances, the cooling pipe 60 between the pipe joint 1, the cooling coil 40, and the heat exchanger 50 can be entirely metal pipes, eliminating the need for flexible piping. This reduces the assembly steps of the liquid cooling system within the power device and facilitates heat dissipation within the liquid cooling system. Of course, the cooling pipe 60 between the pipe joint 1, the cooling coil 40, and the heat exchanger 50 can also be partially flexible piping.

[0092] Based on the above, the assembly process of the liquid cooling system can be as follows: Figure 5 As shown, the sealing ring 4 can be embedded in the annular sealing groove 221 of the sealing block 2, and the flexible pad 3 can be passed through the positioning pin 211 on the sealing block 2 and fixed on the inner end surface of the sealing block 2. Figure 6 Then insert the sealing block 2 fixed with the flexible pad 3 and the sealing ring 4 into the installation opening 101 of the housing 10, and then fix the sealing block 2 and the shell wall of the housing 10. Figure 3 As shown, it can be seen that the process of assembling the pipeline sealing structure 20 on the shell wall of the shell 10 is relatively simple, and the shell 10 has a high protection level and strong sealing performance.

[0093] In the disclosed embodiment, a liquid cooling and heat dissipation system is assembled inside a power device, and its pipeline sealing structure includes a pipeline joint 1, a sealing block 2, a flexible pad 3, and a sealing ring 4. The pipeline joint 1 is located in the housing 10 of the power device, and a portion of the sealing block 2 extends into the housing 10, opposite to the pipeline joint 1. The flexible pad 3 is compressed between the sealing block 2 and the pipeline joint 1, and the other portion of the sealing block 2 is fixed to the shell wall of the shell 10. Moreover, the sealing ring 4 is sealed between the sealing block 2 and the outer surface of the shell wall of the shell 10. In this way, the flexible pad 3 is flexible and has a certain amount of compression, which can absorb tolerances. The flexible pad 3 can also play a sealing role. The sealing ring 4 mainly plays a sealing role and can also absorb tolerances. It can be seen that this liquid cooling and heat dissipation system is applied to power devices, which can improve the assembly difficulties caused by tolerances and improve the protection level of the shell of the power components.

[0094] In addition, the outer end face of the pipe connector 1 may have a positioning hole, and the inner end face of the sealing block 2 may have a positioning pin. Through the cooperation of the positioning pin and the positioning hole, on the one hand, the circumferential positioning of the pipe connector 1 and the sealing block 2 can be achieved, and on the other hand, the position of the pipe connector 1 in the shell 10 can be corrected, and then the axial crimping of the pipe connector 1 and the sealing block 2 can be combined to make the pipe connector 1 firmly fixed at the installation port 101.

[0095] This embodiment also provides a power supply system, such as Figure 7 The following is a schematic diagram of the power supply system. Figure 7 As shown, the power supply system includes a cooling device 200 and the power device 100 described above, wherein the liquid inlet of the pipe connector 1 and the liquid outlet of the cooling device are connected by a pipe, and the liquid outlet of the pipe connector 1 and the liquid inlet of the cooling device are connected by a pipe.

[0096] For example, the end face of the pipe connector 1 facing the sealing block 2 has a first liquid inlet 12 and a first liquid outlet 15. The first liquid inlet 12 of the pipe connector 1 is connected to the liquid outlet of the cooling device 200 via a pipe, and the first liquid outlet 15 of the pipe connector 1 is connected to the liquid inlet of the cooling device 200 via a pipe.

[0097] Among them, the cooling device 200 is used to transport the coolant with a lower temperature to the cooling coil 40 and the heat exchanger 50 inside the power device, and to recover and cool the coolant with a higher temperature in the cooling coil 40 and the heat exchanger 50 of the power device, and to transport the cooled coolant to the cooling coil 40 and the heat exchanger 50 of the power device again. In this way, the coolant circulates between the power device 100 and the cooling device 200 to dissipate heat for the power device 100.

[0098] The above descriptions are merely optional embodiments of the present disclosure and are not intended to limit the present disclosure. Any modifications, equivalent replacements, improvements, etc. made within the principles of the present disclosure shall be included in the scope of protection of the present disclosure.

Claims

1. A power device, characterized in that: The power device comprises a housing (10) and a pipeline sealing structure (20), wherein the pipeline sealing structure (20) comprises a pipeline joint (1), a sealing block (2), a flexible pad (3) and a sealing ring (4); The pipe joint (1) is located in the housing (10), the sealing block (2) is mounted on the housing wall of the housing (10), and the position of the sealing block (2) is opposite to the position of the pipe joint (1); The flexible pad (3) is arranged between the sealing block (2) and the pipe joint (1), and the sealing ring (4) is arranged between the sealing block (2) and the shell wall of the shell (10).

2. The power device according to claim 1, characterized in that The sealing block (2) comprises a main body portion (21) and a boss portion (22) protruding relative to a side surface of the main body portion (21); The main body (21) extends into the shell (10), the boss (22) is fixed to the shell wall of the shell (10), the flexible pad (3) is located between the main body (21) and the pipe joint (1), and the sealing ring (4) is sleeved outside the main body (21) and located between the boss (22) and the outer surface of the shell wall of the shell.

3. The power device according to claim 2, characterized in that An annular sealing groove (221) is provided on the surface of the boss portion (22) facing the main body portion (21), and the sealing ring (4) is located in the annular sealing groove (221).

4. The power device according to claim 3, characterized in that The sealing ring (4) protrudes from the annular sealing groove (221).

5. The power device according to any one of claims 2 to 4, characterized in that: The boss portion (22) and the shell wall of the shell (10) are fixed by screws.

6. The power device according to claim 1, wherein: The sealing block (2) has a positioning pin (211) on its end surface facing the pipe joint (1), and the pipe joint (1) has a positioning hole (11) on its end surface facing the sealing block. The positioning pin (211) passes through the flexible pad (3) and is inserted into the positioning hole (11).

7. The power device according to claim 6, characterized in that The number of the positioning pins (211) is two, and the two positioning pins (211) are diagonally distributed on the end surface of the sealing block (2) facing the pipe joint (1); the number of the positioning holes (11) is two, and the two positioning holes (11) are diagonally distributed on the end surface facing the sealing block (2).

8. The power device according to claim 1, wherein: The flexible pad (3) is a foamed rubber ring processed through a foaming molding process.

9. The power device according to claim 1, wherein: The pipeline joint (1) is a liquid inlet and outlet pipeline joint, and the pipeline joint (1) has a liquid inlet and a liquid outlet.

10. The power device according to claim 1, wherein: The power device includes a cooling coil (40), a heat exchanger (50), and a plurality of cooling pipes (60), wherein the cooling coil (40), the heat exchanger (50), and the plurality of cooling pipes (60) are all located in the housing (10); The liquid inlet of the cooling coil (40) and the liquid inlet of the heat exchanger (50) are both connected to the liquid inlet of the pipe joint (1) through the cooling pipeline (60), and the liquid outlet of the cooling coil (40) and the liquid outlet of the heat exchanger (50) are both connected to the liquid outlet of the pipe joint (1) through the cooling pipeline (60).

11. A power supply system, comprising a cooling device (200) and a power device (100) according to any one of claims 1 to 10, wherein the liquid inlet of the pipe joint (1) and the liquid outlet of the cooling device (200) are connected via a pipe, and the liquid outlet of the pipe joint (1) and the liquid inlet of the cooling device (200) are connected via a pipe.

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