Water pipe connector and electronic equipment

Abstract

The utility model discloses a water pipe connector which is used for being connected with a shell and a cooling water channel of electronic equipment, the shell comprises an inner cavity and an open hole, the cooling water channel is located in the inner cavity, the open hole is communicated with the cooling water channel, the water pipe connector comprises an inserting pipe body, and the inserting pipe body comprises an inserting portion and a sealing portion which are connected. The inserting part is used for being inserted into the cooling water channel in the axial direction of the inserting pipe body and is used for being in sealing connection with the inner wall of the cooling water channel in the radial direction; the sealing part comprises a sealing face which is used for being in interference fit with the inner hole wall of the open hole in the radial direction. According to the utility model, the assembly process for connecting the water pipe joint and the shell can be simplified, and the cost is reduced. The utility model also provides an electronic device.

Description

Technical Field

[0001] The utility model relates to the technical field of power electronics, in particular to a water pipe joint and electronic equipment. Background Art

[0002] An inverter is a converter that converts DC power (battery, storage bottle) into constant frequency and voltage or frequency and voltage regulated AC power. The inverter releases a large amount of heat during operation. This heat needs to enter the cooling water channel on the inverter through the coolant for heat exchange, remove the generated heat, and achieve cooling of the inverter. The cooling water channel and the external refrigerant interface of the existing inverter often use injection molded parts as water pipe joints, and use sealing rings for sealing, and screws and metal bushings for fastening. This has a large number of parts and a complicated assembly process. In addition, the existing implementation method achieves electromagnetic shielding by means of a metal spring sheet mounted on the outside of the water pipe joint. The contact point area is small, and there may be a phenomenon that the metal spring sheet contacts the shell unstably, resulting in the risk of poor grounding conduction and reducing the EMC shielding effect. Utility Model Content

[0003] The utility model aims to solve the problems of complicated assembly process, many parts and high cost of the existing water pipe joint, inverter housing and cooling water channel connection. The utility model provides a water pipe joint and electronic equipment, which can simplify the assembly process and reduce the cost.

[0004] In order to solve the above technical problems, an embodiment of the utility model discloses a water pipe joint for connecting with a shell and a cooling water channel of an electronic device, the shell comprising an inner cavity and an opening, the cooling water channel is located in the inner cavity, the opening is connected to the cooling water channel, the water pipe joint comprises a plug-in pipe body, the plug-in pipe body comprises a plug-in portion and a sealing portion connected to each other, the plug-in portion is used to insert the cooling water channel along the axial direction of the plug-in pipe body, and is used to be radially sealed and connected with the inner wall of the cooling water channel; the sealing portion comprises a sealing surface, and the sealing surface is used to radially interfere with the inner hole wall of the opening.

[0005] By adopting the above technical solution, the plug-in part is press-fitted into the cooling water channel, and the plug-in part is radially sealed and connected to the inner wall of the cooling water channel to prevent the coolant in the cooling water channel from leaking, affecting the heat exchange effect and causing corrosion to the shell.

[0006] The sealing surface and the inner hole wall of the opening on the shell are radially interference-fitted, thereby achieving a sealed connection between the water pipe joint and the shell to prevent external moisture, dust, etc. from entering the inner cavity of the shell through the gap between the opening and the water pipe joint, causing damage to the electronic components in the inner cavity and causing unstable operation of the electronic equipment. On the other hand, the interference fit between the sealing surface and the inner hole wall of the opening on the shell also achieves relative fixation of the water pipe joint and the shell.

[0007] In summary, compared with the method of using injection molded parts as water pipe joints, sealing the shell and the water pipe joint with a sealing ring, and fixing the water pipe joint and the shell with screws and metal bushings, this solution only needs to press the plug-in part of the water pipe joint into the cooling water channel to make the sealing surface and the hole wall of the opening on the shell have an interference fit, so as to achieve the sealing and fixed connection between the water pipe joint and the shell. Therefore, this solution effectively reduces the number of parts, reduces the operating steps, improves the production cycle, and reduces costs.

[0008] According to another specific embodiment of the present invention, the outer diameter of the sealing portion is greater than the outer diameter of the plug-in portion, and the outer diameter of the sealing portion is greater than the inner diameter of the opening.

[0009] By adopting the above technical solution, the outer diameter of the sealing part is larger than the outer diameter of the plug-in part, so that the plug-in part can be inserted into the cooling water channel through the opening, and the outer diameter of the sealing part is larger than the inner diameter of the opening, so as to achieve radial interference fit between the sealing surface of the sealing part and the inner hole wall of the opening at the opening.

[0010] According to another specific embodiment of the utility model, the outer wall of the plug-in portion is provided with a groove extending along its circumferential direction, and along the axial direction of the plug-in tube body, the groove is spaced apart from the sealing surface; a sealing ring is accommodated in the groove, and the sealing ring is used to radially abut against the inner wall of the cooling water channel.

[0011] By adopting the above technical solution, when the plug-in part is inserted into the cooling water channel, the sealing ring on the plug-in part radially abuts against the inner wall of the cooling water channel to form a sealed connection between the water pipe joint and the cooling water channel, thereby preventing the coolant in the cooling water channel from leaking, affecting the heat exchange effect and causing corrosion to the shell.

[0012] According to another specific embodiment of the present utility model, the water pipe joint also includes a mounting portion, which is connected to the sealing portion of the plug-in pipe body, and the mounting portion is located outside the inner cavity of the shell; the mounting portion includes an abutment surface, which is used to abut with the outer surface of the shell along the axial direction of the plug-in pipe body.

[0013] By adopting the above technical solution, the abutting surface abuts against the outer surface of the shell along the axial direction of the plug-in pipe body, thereby limiting the movement of the water pipe joint along the axial direction of the plug-in pipe body and in the direction toward the cooling water channel.

[0014] According to another specific embodiment of the present invention, the water pipe joint is made of aluminum.

[0015] By adopting the above technical scheme, the water pipe joint made of aluminum has the characteristics of light weight, corrosion resistance, thermal conductivity, etc. Its light weight is conducive to transportation and processing, its corrosion resistance prolongs its service life, and its thermal conductivity improves its heat exchange efficiency.

[0016] The utility model also provides an electronic device based on the water pipe joint, comprising:

[0017] a housing, comprising an inner cavity and an opening;

[0018] A cooling water channel is located in the inner cavity, and the opening is connected to the cooling water channel;

[0019] In the above-mentioned water pipe joint, the plug-in portion is inserted into the cooling water channel along the axial direction of the plug-in pipe body and is radially sealed and connected with the inner wall of the cooling water channel; the sealing surface is radially interference-fitted with the inner hole wall of the opening.

[0020] According to another specific embodiment of the present utility model, the cooling water channel includes a limiting surface, and along the axial direction of the plug-in pipe body, the end of the plug-in portion is elastically connected to the limiting surface of the cooling water channel.

[0021] By adopting the above technical solution, the end of the plug-in portion is elastically connected to the limiting surface of the cooling water channel, so as to buffer the process of press-fitting the water pipe joint into the cooling water channel.

[0022] According to another specific embodiment of the utility model, it also includes a metal elastic part; the cooling water channel and the shell are both made of metal material, and the two ends of the metal elastic part along the axial direction of the plug-in tube body are respectively abutted against the limiting surface of the cooling water channel and the end of the plug-in part, and the outer periphery of the metal elastic part is abutted against the inner wall of the cooling water channel.

[0023] By adopting the above technical solution, the metal elastic part is in contact with the water pipe joint, cooling water channel and shell which are also made of metal, and the contact area is large, thereby significantly improving the electromagnetic shielding effect.

[0024] According to another specific implementation of the present invention, the metal elastic member is a wave spring.

[0025] According to another specific embodiment of the utility model, the installation portion of the water pipe joint is provided with a limiting groove; the shell is provided with a limiting column, and the limiting column is inserted into the limiting groove to limit the water pipe joint from rotating relative to the shell.

[0026] According to another specific implementation manner of the present utility model, the electronic device is an inverter. BRIEF DESCRIPTION OF THE DRAWINGS

[0027] Figure 1 An exploded view of an inverter in one embodiment is shown;

[0028] Figure 2 A cross-sectional view showing the connection between a cooling water channel and a water pipe joint in one embodiment;

[0029] Figure 3A three-dimensional diagram of an inverter according to an embodiment of the utility model is shown;

[0030] Figure 4 An exploded view of an inverter according to an embodiment of the utility model is shown;

[0031] Figure 5 A three-dimensional diagram showing a water pipe joint according to an embodiment of the utility model;

[0032] Figure 6 A cross-sectional view of an inverter according to an embodiment of the utility model is shown;

[0033] Figure 7 Show Figure 6 A partial enlarged view of area A. DETAILED DESCRIPTION

[0034] The following is an explanation of the implementation of the present invention by specific specific embodiments. Those skilled in the art can easily understand other advantages and functions of the present invention from the contents disclosed in this specification. Although the description of the present invention will be introduced in conjunction with the preferred embodiment, this does not mean that the features of this utility model are limited to this implementation. On the contrary, the purpose of introducing the utility model in conjunction with the implementation is to cover other options or modifications that may be extended based on the claims of the present invention. In order to provide a deep understanding of the present invention, the following description will include many specific details. The present invention can also be implemented without using these details. In addition, in order to avoid confusion or blurring the focus of the present invention, some specific details will be omitted in the description. It should be noted that, in the absence of conflict, the embodiments in the present invention and the features in the embodiments can be combined with each other.

[0035] It should be noted that in this specification, similar reference numerals and letters denote similar items in the following drawings, and therefore, once an item is defined in one drawing, it does not need to be further defined and explained in the subsequent drawings.

[0036] In the description of this embodiment, it should be noted that the terms "upper", "lower", "inner", "bottom", etc. indicate orientations or positional relationships based on the orientations or positional relationships shown in the accompanying drawings, or are the orientations or positional relationships in which the utility model product is usually placed when in use. They are only for the convenience of describing the utility model and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation, and therefore cannot be understood as a limitation on the utility model.

[0037] The terms “first”, “second”, etc. are only used for distinguishing descriptions and should not be understood as indicating or implying relative importance.

[0038] In the description of this embodiment, it is also necessary to explain that, unless otherwise clearly specified and limited, the terms "set", "connected", and "connected" should be understood in a broad sense, for example, it can be a fixed connection, a detachable connection, or an integral connection; it can be a mechanical connection or an electrical connection; it can be a direct connection, or it can be indirectly connected through an intermediate medium, or it can be the internal communication of two components. For ordinary technicians in this field, the specific meanings of the above terms in this embodiment can be understood according to specific circumstances.

[0039] In order to make the purpose, technical solution and advantages of the present invention more clear, the implementation mode of the present invention will be further described in detail below with reference to the accompanying drawings.

[0040] Figure 1 and Figure 2 An inverter of an embodiment is shown, which includes a housing 100 made of metal, a cooling water channel 110 made of metal, and a water pipe joint 120 made of plastic, wherein the housing 100 includes an inner cavity (not shown in the figure) and an opening 101, the cooling water channel 110 is located in the inner cavity, and communicates with the outside through the opening 101 located on the housing 100. The water pipe joint 120 includes a first tube body 121, a mounting portion 122, and a second tube body 123 connected in sequence, wherein a first sealing ring 130 is sleeved on the first tube body 121, the first tube body 121 passes through the opening 101 and is inserted into the cooling water channel 110, and the first sealing ring 130 is used to realize the sealed connection between the water pipe joint 120 and the cooling water channel 110. The second tube 123 is connected to an external refrigerant interface (such as a vehicle cooling system, not shown in the figure) so that the external refrigerant interface provides and recovers coolant for the cooling water channel 110. The coolant circulates in and out of the cooling water channel 110 for heat exchange, removes the heat generated by the operation of the electronic components inside the inverter, and realizes cooling of the inverter. The mounting portion 122 and the housing 100 are fixedly connected by screws 150 and a metal bushing 125 located on the mounting portion 122.

[0041] A second sealing ring 140 is provided between the shell 100 and the mounting portion 122 and is arranged around the opening 101. Under the tightening action of the screw 150, the mounting portion 122 presses the second sealing ring 140, thereby realizing a sealed connection between the water pipe joint 120 and the shell 100 to prevent external moisture, dust, etc. from entering the inner cavity of the shell 100 through the opening 101.

[0042] In addition, a metal spring 160 is sleeved on the first tube 121. The metal spring 160 has a plurality of protrusions 161 arranged at intervals. The plurality of protrusions 161 are in contact with the inner wall of the cooling water channel 110 and the shell 100 which are also made of metal, thereby achieving an electromagnetic shielding effect.

[0043] This implementation method realizes the connection between the housing 100 and the water pipe joint 120 through the second sealing ring 140, the metal bushing 125, and the screw 150. This method has a complex assembly process, a large number of parts, and high cost. When the metal spring 160 is used for electromagnetic shielding, the area of ​​the multiple protrusions 161 contacting the housing 100 and the cooling water channel 110 is small, the electromagnetic shielding effect is poor, and the metal spring 160 may be unstable in contacting the housing 100, resulting in the risk of poor grounding conduction, further reducing the electromagnetic shielding effect.

[0044] Based on this, an embodiment of the present application provides an inverter, which eliminates the above-mentioned second sealing ring 140 and two screws 150, two metal bushings 125, reduces the operating steps, improves the production cycle, reduces the structural weight, reduces the cost, and enhances the EMC shielding effect.

[0045] Specifically, refer to Figures 3 to 5 The inverter of one embodiment of the present application includes a housing 2, a cooling water channel 3 and a water pipe joint 4. The housing 2 includes an inner cavity 20 and an opening 21. The cooling water channel 3 is located in the inner cavity 20. The opening 21 runs through the housing 2 to connect the cooling water channel 3 with the outside. A portion of the water pipe joint 4 passes through the opening 21 and is connected to the cooling water channel 3.

[0046] Exemplarily, the housing 2 includes two openings 21, and both are connected to a water pipe connector 4 for liquid inlet and liquid outlet, respectively. For ease of viewing, Figure 3 and Figure 5 Only a schematic diagram showing that the opening 21 for liquid inlet is connected to the water pipe connector 4 is shown.

[0047] Likewise, those skilled in the art can understand that the inner cavity 20 of the shell 2 should be a closed chamber. For ease of viewing, the complete inner cavity 20 is not shown in this application.

[0048] It should be noted that the embodiment of the present application uses an inverter as an embodiment of the electronic device for description, but those skilled in the art can understand that the electronic device of the present application is not limited thereto, for example, the electronic device can also be a transformer, etc.

[0049] like Figure 4 and Figure 5As shown, the water pipe connector 4 of the embodiment of the present application includes a plug-in pipe body 41, a mounting portion 42 and a connecting portion 43, wherein the mounting portion 42 is located between the plug-in pipe body 41 and the connecting portion 43, and both are fixedly connected to the plug-in pipe body 41 and the connecting portion 43. The plug-in pipe body 41 is used to connect to the cooling water channel 3, the mounting portion 42 is used to connect to the shell 2, and the connecting portion 43 is used to connect to an external refrigerant interface (such as a vehicle cooling system, not shown in the figure), thereby forming a connection between the external refrigerant interface and the cooling water channel 3, so that the external refrigerant interface provides and recovers coolant for the cooling water channel 3, and the coolant circulates in and out of the cooling water channel 3 for heat exchange, thereby taking out the heat generated by the operation of the electronic components inside the inverter, thereby achieving cooling of the inverter.

[0050] Specifically, the plug-in tube body 41 includes a plug-in portion 410 and a sealing portion 411 connected to each other. The plug-in portion 410 is axially ( Figure 5 The Z direction is shown in the figure) and is inserted into the cooling water channel 3 and is radially ( Figure 5 The sealing connection (as shown in the X direction) prevents the coolant in the cooling water channel 3 from leaking, affecting the heat exchange effect and causing corrosion to the shell 2.

[0051] The sealing portion 411 includes a sealing surface 412, and the sealing surface 412 is radially interference-fitted with the inner hole wall of the opening 21. Exemplarily, the sealing surface 412 is a machined surface, that is, a surface that has been machined, such as a lathe.

[0052] By adopting the above technical solution, the plug-in part 410 is pressed into the interior of the cooling water channel 3, and the plug-in part 410 is sealed and connected to the inner wall of the cooling water channel 3 to prevent the coolant in the cooling water channel 3 from leaking, affecting the heat exchange effect and causing corrosion to the shell 2.

[0053] The sealing surface 412 and the inner wall of the opening 21 on the housing 2 are radially ( Figure 5 The water pipe connector 4 and the housing 2 are sealed by an interference fit (shown in the X direction), thereby preventing moisture, dust, etc. from entering the inner cavity 20 of the housing 2 through the gap between the opening 21 and the water pipe connector 4, thereby damaging the electronic components in the inner cavity 20 and causing the electronic equipment to work unstably. On the other hand, the interference fit between the sealing surface 412 and the inner hole wall of the opening 21 on the housing 2 also achieves the relative fixation of the water pipe connector 4 and the housing 2.

[0054] In summary, compared with the aforementioned method of using an injection molded part as a water pipe joint, sealing the shell and the water pipe joint with a second sealing ring, and fixing the water pipe joint and the shell with screws and metal bushings, this solution only needs to press the plug-in part of the water pipe joint into the cooling water channel so that the sealing surface and the inner hole wall of the opening on the shell are interference fit, so as to achieve the sealing and fixed connection between the water pipe joint and the shell. Therefore, compared with the aforementioned implementation method, this solution effectively reduces the number of parts, reduces the operating steps, improves the production cycle, and reduces the cost.

[0055] In some possible implementations, the outer diameter of the sealing portion 411 is greater than the outer diameter of the plug-in portion 410 , and the outer diameter of the sealing portion 411 is greater than the inner diameter of the opening 21 .

[0056] Exemplarily, the outer diameter of the sealing portion 411 is larger than the outer diameter of the plug-in portion 410, so that the plug-in portion 410 can pass through the opening 21 and be inserted into the cooling water channel 3, and the outer diameter of the sealing portion 411 is larger than the inner diameter of the opening 21, so that the sealing surface 412 of the sealing portion 411 can be radially interfered with the inner hole wall of the opening 21 at the opening 21, so as to seal the connection between the water pipe joint 4 and the shell 2, that is, to seal the gap between the water pipe joint 4 and the opening 21, so as to prevent external moisture, dust, etc. from entering the inner cavity 20 of the shell 2, causing damage to the electronic components in the inner cavity 20, and causing unstable operation of the electronic equipment.

[0057] Exemplarily, the water pipe connector 4 is made of aluminum. The water pipe connector 4 made of aluminum has the characteristics of light weight, corrosion resistance, heat conductivity, etc. Its light weight is conducive to transportation and processing, its corrosion resistance prolongs its service life, and its thermal conductivity improves its heat exchange efficiency.

[0058] like Figures 5 to 7 As shown, in some possible embodiments, the outer wall of the plug-in portion 410 is provided with a Figure 5 The groove 413 extends along the axial direction (in the R direction) of the plug-in tube body 41. Figure 5 The groove 413 is spaced apart from the sealing surface 412; the groove 413 contains a sealing ring 414, which abuts against the inner wall of the cooling water channel 3 to seal the plug-in portion 410 and the inner wall of the cooling water channel 3.

[0059] For example, along the axial direction ( Figure 7The groove 413 is deeper into the cooling water channel 3 than the sealing surface 412. Specifically, the sealing ring 414 on the groove 413 protrudes from the outer surface of the plug-in portion 410. When the plug-in portion 410 is inserted into the cooling water channel 3, the sealing ring 414 on the plug-in portion 410 abuts against the inner wall of the cooling water channel 3 to form a sealed connection between the water pipe joint 4 and the cooling water channel 3, thereby preventing the coolant in the cooling water channel 3 from leaking, affecting the heat exchange effect, and causing corrosion to the housing 2.

[0060] In some possible implementations, the mounting portion 42 is located outside the inner cavity 20 of the housing 2; the mounting portion 42 includes an abutment surface 421, and the abutment surface 421 and the outer surface of the housing 2 are in contact with each other along the axial direction of the plug-in tube body 41 ( Figure 7 The water pipe joint 4 abuts against the cooling water channel 3 (as shown in the Z direction), thereby limiting the movement of the water pipe joint 4 along the axial direction of the plug-in pipe body 41 and toward the cooling water channel 3.

[0061] like Figure 4 and Figure 7 As shown, in some possible implementations, a metal elastic member 5 is further included, the water pipe joint 4, the cooling water channel 3 and the housing 2 are all made of metal material, and the metal elastic member 5 is axially ( Figure 7 The two ends of the metal elastic member 5 (shown in the Z direction) are respectively in contact with the limiting surface 30 of the cooling water channel 3 and the end of the plug-in portion 410, and the outer peripheral edge of the metal elastic member 5 is in contact with the inner wall of the cooling water channel 3.

[0062] Exemplarily, the limiting surface 30 is a step formed between two connected pipes of the cooling water channel 3 with different apertures.

[0063] Exemplarily, when the water pipe connector 4 is not pressed into the cooling water channel 3, the metal elastic member 5 is located in the cooling water channel 3, and its outer periphery abuts against the inner wall of the cooling water channel 3. When the plug-in portion 410 of the water pipe connector 4 is pressed into the cooling water channel 3, the metal elastic member 5 is continuously compressed during the entry process until the abutment surface 421 of the mounting portion 42 abuts against the outer surface of the shell 2 along the axial direction of the plug-in tube body 41, so that the plug-in portion 410 completely enters the cooling water channel 3 and can no longer continue to penetrate into the cooling water channel 3. At this time, the limiting surface 30 of the cooling water channel 3 and the end of the plug-in portion 410 compress the metal elastic member 5, and both have a large contact area with the metal elastic member 5, and the electromagnetic shielding effect is good.

[0064] That is to say, compared with the metal spring in the previous embodiment, which is only in contact with the shell and the cooling water channel through the protrusion, its contact area is obviously small and the electromagnetic shielding effect is poor. In the present application, the metal elastic member 5 is in contact with the water pipe joint 4, the cooling water channel 3 and the shell 2, which are also made of metal materials, and the contact area is large, thereby significantly improving the electromagnetic shielding effect.

[0065] Exemplarily, the metal elastic part 5 increases the contact area and improves the electromagnetic shielding effect on one hand, and on the other hand, the metal elastic part 5 has elasticity, thereby relaxing the dimensional tolerance requirement and simplifying the assembly process.

[0066] On the other hand, the metal elastic member 5 is located between the end of the plug-in portion 410 and the limiting surface 30 of the cooling water channel 3, that is, along the axial direction ( Figure 7 The end of the plug-in portion 410 is elastically connected to the limiting surface 30 of the cooling water channel 3 to buffer the process of the water pipe connector 4 being pressed into the cooling water channel 3.

[0067] Exemplarily, the metal elastic member 5 is a wave spring.

[0068] Those skilled in the art can understand that the wave spring is the preferred metal elastic member 5 , but in other embodiments, other types of metal elastic members 5 , such as leaf springs, etc., can also achieve the purpose of improving the electromagnetic shielding effect.

[0069] refer to Figure 4 and Figure 5 In some possible implementations, the mounting portion 42 of the water pipe connector 4 is provided with a limiting groove 420; the housing 2 is provided with a limiting column 22, and the limiting column 22 is inserted into the limiting groove 420 to limit the rotation of the water pipe connector 4 relative to the housing 2. Exemplarily, two limiting grooves 420 are provided on the mounting portion 42, and the two limiting grooves 420 are symmetrically arranged. Correspondingly, two limiting columns 22 are also provided on the housing 2, and the two limiting columns 22 are symmetrically arranged, and each limiting column 22 is inserted into its corresponding limiting groove 420, so that the insertion portion 410 of the water pipe connector 4 is limited during the process of being pressed into the cooling water channel 3, which plays a role in increasing the torque and preventing the water pipe connector 4 from rotating relative to the housing 2.

[0070] Those skilled in the art can understand that, although in this embodiment, the functions of increasing torque and preventing rotation are achieved by using two pairs of limit posts 22 and limit slots 420, in other implementations, other numbers of limit slots 420 and limit posts 22 may be provided, such as three pairs of limit posts 22 and limit slots 420, four pairs of limit posts 22 and limit slots 420, etc. Further, other methods may be used to achieve the functions of increasing torque and preventing rotation, such as shaft hole matching, clamping, etc.

[0071] Although the present invention has been illustrated and described with reference to certain preferred embodiments of the present invention, it should be understood by those skilled in the art that the above contents are further detailed descriptions of the present invention in combination with specific embodiments, and it cannot be determined that the specific implementation of the present invention is limited to these descriptions. Those skilled in the art may make various changes in form and details, including making several simple deductions or substitutions, without departing from the spirit and scope of the present invention.

Claims

1. A water pipe joint, used to connect with a housing and a cooling water channel of an electronic device, wherein the housing comprises an inner cavity and an opening, the cooling water channel is located in the inner cavity, and the opening is connected to the cooling water channel, characterized in that: The water pipe joint includes a plug-in pipe body, which includes a plug-in portion and a sealing portion connected to each other. The plug-in portion is used to be inserted into the cooling water channel along the axial direction of the plug-in pipe body and to be radially sealed and connected with the inner wall of the cooling water channel; the sealing portion includes a sealing surface, which is used to have a radial interference fit with the inner hole wall of the opening.

2. The water pipe joint according to claim 1, characterized in that: The outer diameter of the sealing portion is greater than the outer diameter of the plug-in portion, and the outer diameter of the sealing portion is greater than the inner diameter of the opening.

3. The water pipe joint according to claim 2, characterized in that: The outer wall of the plug-in part is provided with a groove extending along its circumferential direction, and the groove is spaced apart from the sealing surface along the axial direction of the plug-in tube body; a sealing ring is accommodated in the groove, and the sealing ring is used to abut against the inner wall of the cooling water channel in the radial direction.

4. The water pipe joint according to claim 2 or 3, characterized in that: The water pipe joint also includes a mounting portion, which is connected to the sealing portion of the plug-in pipe body and is located outside the inner cavity of the shell; the mounting portion includes an abutment surface, which is used to abut against the outer surface of the shell along the axial direction of the plug-in pipe body.

5. The water pipe joint according to claim 1, characterized in that: The water pipe joint is made of aluminum.

6. An electronic device, characterized in that: include: a housing, comprising an inner cavity and an opening; A cooling water channel is located in the inner cavity, and the opening is connected to the cooling water channel; The water pipe joint according to any one of claims 1 to 5, wherein the plug-in portion is inserted into the cooling water channel along the axial direction of the plug-in pipe body, and is radially sealed and connected with the inner wall of the cooling water channel; the sealing surface is radially interference fit with the inner hole wall of the opening.

7. The electronic device according to claim 6, characterized in that: The cooling water channel comprises a limiting surface, and along the axial direction of the plug-in pipe body, the end of the plug-in portion is elastically connected to the limiting surface of the cooling water channel.

8. The electronic device according to claim 6 or 7, characterized in that: It also includes a metal elastic part; the cooling water channel and the shell are both made of metal material, the two ends of the metal elastic part along the axial direction of the plug-in tube body are respectively abutted against the limiting surface of the cooling water channel and the end of the plug-in part, and the outer peripheral edge of the metal elastic part is abutted against the inner wall of the cooling water channel.

9. The electronic device according to claim 8, characterized in that: The metal elastic member is a wave spring.

10. The electronic device according to claim 6, characterized in that: The installation portion of the water pipe joint is provided with a limiting groove; the shell is provided with a limiting column, and the limiting column is inserted into the limiting groove to limit the water pipe joint from rotating relative to the shell.

11. The electronic device according to claim 6, characterized in that: The electronic device is an inverter.

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