Contour welding structure

Abstract

The application relates to a profiled welding structure which comprises a first sealing lug, a second sealing lug and a ring-shaped main body part, the middle part of the ring-shaped main body part is provided with a connecting hole, the profiled welding structure can be sleeved on a connecting pipe through the connecting hole, the first sealing lug and the second sealing lug are connected to the two ends of the ring-shaped main body part respectively, one end of the first sealing lug away from the ring-shaped main body part extends in a direction away from the second sealing lug along a connecting seam between a first end plate and a second end plate, and one end of the second sealing lug away from the ring-shaped main body part extends in a direction away from the first sealing lug along the connecting seam between the first end plate and the second end plate, so that the profiled welding structure can be welded between a liquid cooling plate and the connecting pipe and sealedly cover the opening of the entire welding gap. The profiled welding structure provided by the application solves the problem that the existing triangular cavity area on both sides of the assembly hole of the liquid cooling plate causes the assembly hole and the pipeline of the liquid cooling plate to be difficult to be connected in a sealed mode.

Description

TECHNICAL FIELD

[0001] The present application relates to the technical field of liquid cooling plate welding structure, in particular to a profiling welding structure. BACKGROUND

[0002] At present, more and more components of new energy vehicles need to be cooled, including but not limited to power batteries, IGBT chips, domain controllers and other components, and the structure and installation environment of the components are more and more complex, which poses great challenges to the sealing of the liquid cooling plate.

[0003] Generally, the liquid cooling plate includes an upper end plate and a lower end plate, and the upper end plate and the lower end plate are welded to form the liquid cooling plate. When the installation environment of the liquid cooling plate requires that the inlet and outlet positions of the liquid cooling plate are arranged on the side surface of the liquid cooling plate, the pipeline for connecting the external pipeline is also arranged on the side surface of the liquid cooling plate. At this time, in order to facilitate the installation of the pipeline, the upper end plate and the lower end plate are respectively punched to form semicircular communication ports, and the communication ports of the upper end plate and the lower end plate enclose a circular pipeline communication port. However, during the punching forming process of the upper end plate or the lower end plate, an arc chamfer is generated between the side wall of the semicircular communication port and the bottom wall of the upper end plate (or the lower end plate). As a result, triangular cavity regions appear on both sides of the circular communication port, thereby increasing the risk of cooling liquid leakage.

[0004] In order to reduce the risk of cooling liquid leakage from the triangular cavity region, the current common solution is to increase a welding ring to fill the triangular cavity region. However, due to the large area of the triangular cavity region, virtual welding and other problems may occur. Therefore, such arrangement cannot completely eliminate the risk of leakage. Alternatively, a stamping process can be added to reduce the size of the arc chamfer, thereby reducing the size of the triangular cavity region. However, such arrangement not only increases the processing difficulty of the liquid cooling plate, but also cannot completely eliminate the triangular cavity region. SUMMARY

[0005] Therefore, it is necessary to provide a profiling welding structure to solve the problem that the triangular cavity region on both sides of the assembly hole of the existing liquid cooling plate exists, which makes it difficult to seal the connection between the assembly hole of the liquid cooling plate and the pipeline.

[0006] The conformal welding structure provided in this application is used for sealing welding between a cylindrical connecting pipe and a liquid cooling plate. The liquid cooling plate includes a first end plate and a second end plate, which enclose a heat exchange cavity and multiple connecting ports respectively communicating with the heat exchange cavity. Multiple connecting pipes are respectively inserted into corresponding connecting ports between the first and second end plates, and a welding gap is formed between the outer wall of the connecting pipe and the inner wall of the connecting port. The conformal welding structure includes a first sealing ear, a second sealing ear, and an annular main body. A connecting hole is provided in the middle of the annular main body, allowing the conformal welding structure to be fitted onto the connecting pipe through the connecting hole. The first and second sealing ears are respectively connected to the two ends of the annular main body. The end of the first sealing ear away from the annular main body extends along the connecting seam between the first and second end plates in a direction away from the second sealing ear, and the end of the second sealing ear away from the annular main body also extends along the connecting seam between the first and second end plates in a direction away from the first sealing ear, so that the conformal welding structure can be welded between the liquid cooling plate and the connecting pipe, sealing and covering the opening of the entire welding gap.

[0007] In one embodiment, the conformal welding structure includes a first solder filler layer, a second solder filler layer, and a cover sealing layer. The first solder filler layer and the second solder filler layer are respectively attached to both sides of the cover sealing layer. The first solder filler layer is located on the side of the cover sealing layer closest to the liquid cooling plate, and the first solder filler layer can melt and fill the welding gap between the connecting pipe and the connecting port, so that the cover sealing layer can be connected to the liquid cooling plate and seal the opening of the welding gap. The second solder filler layer is located on the side of the cover sealing layer away from the liquid cooling plate, and the second solder filler layer can melt and fill the connection gap between the connecting pipe and the cover sealing layer, so as to seal the connection between the cover sealing layer and the connecting pipe.

[0008] In one embodiment, both the first solder filler layer and the second solder filler layer are made of aluminum-silicon alloy sheet.

[0009] In one embodiment, the material covering the sealing layer is an aluminum-manganese alloy plate or an aluminum-magnesium-silicon alloy plate.

[0010] In one embodiment, the conformal welding structure further includes a first claw and a second claw. One end of the first claw is connected to a first sealing ear, and the other end extends along the connecting seam between the first end plate and the second end plate in a direction away from the first sealing ear. The first claw is provided with a first groove, and the first end plate and the second end plate can be engaged in the first groove and welded to the inner wall of the first groove. One end of the second claw is connected to a second sealing ear, and the other end extends along the connecting seam between the first end plate and the second end plate in a direction away from the second sealing ear. The second claw is provided with a second groove, and the first end plate and the second end plate can be engaged in the second groove and welded to the inner wall of the second groove.

[0011] In one of the embodiments, the first clamping jaw, the second clamping jaw, the first sealing lug, the second sealing lug and the annular body part are integrally formed.

[0012] In one of the embodiments, the first clamping jaw comprises a first jaw body, a first flange and a second flange, the first jaw body is connected to the first sealing lug, one end of the first jaw body is bent towards the liquid cooling plate to form the first flange, and the other end of the first jaw body is bent towards the liquid cooling plate to form the second flange.

[0013] In one of the embodiments, the second clamping jaw comprises a second jaw body, a third flange and a fourth flange, the second jaw body is connected to the second sealing lug, one end of the second jaw body is bent towards the liquid cooling plate to form the third flange, and the other end of the second jaw body is bent towards the liquid cooling plate to form the fourth flange.

[0014] In one of the embodiments, the profiled welding structure further comprises a connecting strip extending along the connecting seam between the first end plate and the second end plate, the connecting strip connects the first sealing lug and the second sealing lug of adjacent profiled welding structures, the connecting strip is sealedly welded at the connecting seam of the first end plate and the second end plate, and the adjacent annular body part and the connecting strip are integrally formed.

[0015] In one of the embodiments, the profiled welding structure further comprises a first sleeve edge and a second sleeve edge, the first sleeve edge is arranged between the first sealing lug and the second sealing lug and at one end of the annular body part, the second sleeve edge is arranged between the first sealing lug and the second sealing lug and at the other end of the annular body part, one end of the first sleeve edge is connected to the annular body part, and the other end of the first sleeve edge extends towards the first end plate to the outer wall of the communication port, one end of the second sleeve edge is connected to the annular body part, and the other end of the second sleeve edge extends towards the second end plate to the outer wall of the communication port, so that the profiled welding structure can be sleeved on the outside of the communication port through the first sleeve edge and the second sleeve edge.

[0016] In one of the embodiments, the first sleeve edge, the second sleeve edge, the first sealing lug, the second sealing lug and the annular body part are integrally formed.

[0017] Compared with the prior art, the profiled welding structure provided by the present application can prevent leakage of the annular weld between the connecting pipe and the communication port by arranging the annular body part, and effectively cover the triangular cavity area on both sides of the circular communication port by arranging the first sealing lug and the second sealing lug, thereby preventing leakage in the triangular cavity area. Furthermore, the first sealing lug and the second sealing lug are sleeved on the connecting pipe through the annular body part, which greatly improves the assembly strength of the first sealing lug and the second sealing lug. Further, by arranging the annular body part, the first sealing lug and the second sealing lug can be pre-assembled on the connecting pipe, and then the connecting pipe, the profiled welding structure and the liquid cooling plate are brazed, which greatly reduces the difficulty of brazing and improves the welding efficiency of brazing. BRIEF DESCRIPTION OF DRAWINGS

[0018] In order to more clearly illustrate the technical solutions in the embodiments of the present application or the prior art, the drawings needed to be used in the embodiments or the prior art description will be briefly introduced. Obviously, the drawings in the following description only constitute some embodiments of the present application, and other drawings can be obtained by those skilled in the art without any creative effort on the basis of these drawings.

[0019] Figure 1 An assembly side view of a connecting pipe, a liquid cooling plate and a profiled welding structure according to an embodiment of the present application;

[0020] Figure 2 An assembly exploded view of a connecting pipe, a liquid cooling plate and a profiled welding structure according to an embodiment of the present application;

[0021] Figure 3 A structural schematic view of a profiled welding structure according to an embodiment of the present application;

[0022] Figure 4 A structural schematic view of a profiled welding structure according to another embodiment of the present application;

[0023] Figure 5 A structural schematic view of a profiled welding structure according to still another embodiment of the present application;

[0024] Figure 6 A sectional view of a profiled welding structure according to still another embodiment of the present application.

[0025] Reference signs: 100, liquid cooling plate; 110, first end plate; 120, second end plate; 130, heat exchange cavity; 140, communication port; 200, connecting pipe; 210, positioning ring; 300, welding gap; 310, triangular cavity region; 400, profiled welding structure; 410, first sealing lug; 420, second sealing lug; 430, annular main body part; 431, connecting hole; 440, first clamping jaw; 441, first clamping groove; 442, first jaw body; 443, first flange; 444, second flange; 450, second clamping jaw; 451, second clamping groove; 452, second jaw body; 453, third flange; 454, fourth flange; 460, connecting strip; 471, first sleeve edge; 472, second sleeve edge; 481, first solder filling layer; 482, second solder filling layer; 483, covering sealing layer. DETAILED DESCRIPTION

[0026] In the description of the present application, it should be understood that the terms "center", "longitudinal", "transverse", "length", "width", "thickness", "upper", "lower", "front", "back", "left", "right", "vertical", "horizontal", "top", "bottom", "inner", "outer", "clockwise", "counterclockwise", "axial", "radial", "circumferential" and the like indicate the orientation or positional relationship shown in the drawings, which are only for the convenience of describing the present application and simplifying the description, and do not indicate or imply that the device or element referred to must have a particular orientation, be constructed and operated in a particular orientation, and therefore cannot be understood as a limitation of the present application.

[0027] In addition, the terms "first", "second" are only for descriptive purposes and cannot be understood as indicating or implying relative importance or implicitly indicating the number of technical features indicated. Therefore, the features defined with "first", "second" can explicitly or implicitly include at least one of the features. In the description of the present application, the meaning of "a plurality of" is at least two, such as two, three, etc., unless otherwise explicitly specified and limited.

[0028] In the present application, unless otherwise explicitly specified and limited, the terms "mounting", "connecting", "connecting", "fixing" and the like should be understood broadly, for example, it can be fixed connection, or detachable connection, or integral; it can be mechanical connection, or electrical connection; it can be directly connected, or indirectly connected through intermediate medium, it can be the internal communication of two elements or the interaction relationship between two elements, unless otherwise explicitly limited. For those skilled in the art, the specific meaning of the above terms in the present application can be understood according to the specific circumstances.

[0029] In the present application, unless otherwise explicitly specified and limited, the first feature is "on" or "under" the second feature, which can be direct contact between the first and second features, or indirect contact between the first and second features through intermediate medium. Moreover, the first feature "above", "above" and "above" the second feature can be directly above or obliquely above the first feature, or only indicate that the horizontal height of the first feature is higher than that of the second feature. The first feature "below", "below" and "below" the second feature can be directly below or obliquely below the first feature, or only indicate that the horizontal height of the first feature is less than that of the second feature.

[0030] It is to be understood that when an element such as a layer, region or substrate is referred to as being "on" or "connected to" another element, it can be directly on or connected to the other element or intervening elements can be present. In contrast, when an element is referred to as being "directly on" or "directly connected to" another element, there are no intervening elements present. It will be understood that, when a term is used in this specification specifying the relative position of one of the elements to another of the elements (for example, "upper", "lower", "right", "left", "vertical", "horizontal", "above", "below", "to the left of", "to the right of", and the like), the specified relative position can be replaced with the opposite position unless otherwise specified.

[0031] Unless otherwise defined, all technical and scientific terms used herein have the same meaning as commonly understood by one of ordinary skill in the art to which this application belongs. The terminology used in the description of the application herein is for the purpose of describing particular embodiments only and is not intended to be limiting of the application. As used herein, the term "and / or" includes any and all combinations of one or more of the associated listed items.

[0032] At present, new energy vehicles need more and more cooling parts, including but not limited to power battery, IGBT chip and domain controller and other parts, and the structure and installation environment of the parts are more and more complex, which further puts forward great challenge to the sealing of the liquid cooling plate.

[0033] Generally, the liquid cooling plate includes an upper end plate and a lower end plate, and the upper end plate and the lower end plate are welded to form the liquid cooling plate. When the installation environment of the liquid cooling plate requires that the inlet and outlet positions of the liquid cooling plate are arranged on the side surface of the liquid cooling plate, the pipeline for connecting the external pipeline is also arranged on the side surface of the liquid cooling plate. At this time, in order to facilitate the installation of the pipeline, the upper end plate and the lower end plate will be respectively punched to form semicircular communication ports, and the communication ports of the upper end plate and the lower end plate are combined to form a circular pipeline communication port. However, during the punching forming process of the upper end plate or the lower end plate, an arc chamfer will be generated between the side wall of the semicircular communication port and the bottom wall of the upper end plate (or the lower end plate). As a result, triangular cavity regions will appear on both sides of the circular communication port, which further increases the risk of cooling liquid leakage.

[0034] In order to reduce the risk of cooling liquid leakage from the triangular cavity region, the current common solution is to increase a welding ring to fill the triangular cavity region. However, due to the large area of the triangular cavity region, virtual welding and other problems will be caused. Therefore, by such arrangement, it is difficult to completely eliminate the risk of leakage. Alternatively, a punching process can be added to reduce the size of the arc top chamfer, thereby reducing the size of the triangular cavity region. However, by such arrangement, not only the processing difficulty of the liquid cooling plate is increased, but also the triangular cavity region cannot be completely eliminated.

[0035] Please refer to Figures 1-6, in order to solve the problem that the existing liquid cooling plate 100 is difficult to seal and connect the assembly hole and the pipeline due to the existence of the triangular cavity area on both sides of the assembly hole. The present application provides a profiled welding structure 400 for sealing welding between the cylindrical connecting pipe 200 and the liquid cooling plate 100.

[0036] As shown in Figure 1 and Figure 2 , the liquid cooling plate 100 includes a first end plate 110 and a second end plate 120, which surround to form a heat exchange cavity 130 and form a plurality of communication ports 140 respectively communicating with the heat exchange cavity 130, a plurality of connecting pipes 200 are respectively arranged between the first end plate 110 and the second end plate 120 at the corresponding communication ports 140, and a welding gap 300 is formed between the outer wall of the connecting pipe 200 and the inner wall of the communication port 140.

[0037] Generally, the number of communication ports 140 is two, one inlet and one outlet.

[0038] As shown in Figures 3-5 , the profiled welding structure 400 includes a first sealing lug 410, a second sealing lug 420 and an annular body 430, the middle part of the annular body 430 is provided with a connecting hole 431, the profiled welding structure 400 is sleeved on the connecting pipe 200 through the connecting hole 431, the first sealing lug 410 and the second sealing lug 420 are respectively connected to the two ends of the annular body 430, the end of the first sealing lug 410 away from the annular body 430 extends along the connecting seam between the first end plate 110 and the second end plate 120 towards the direction away from the second sealing lug 420, and the end of the second sealing lug 420 away from the annular body 430 extends along the connecting seam between the first end plate 110 and the second end plate 120 towards the direction away from the first sealing lug 410, so that the profiled welding structure 400 can be welded between the liquid cooling plate 100 and the connecting pipe 200, and sealed and covered at the opening of the entire welding gap 300.

[0039] By setting the annular body part 430, leakage of the annular weld between the connecting pipe 200 and the communication port 140 can be prevented, and by setting the first sealing lug 410 and the second sealing lug 420, the triangular cavity area 310 on both sides of the circular communication port 140 can be effectively covered to prevent leakage of the triangular cavity area 310. Moreover, the first sealing lug 410 and the second sealing lug 420 are sleeved on the connecting pipe 200 through the annular body part 430, which greatly improves the assembly strength of the first sealing lug 410 and the second sealing lug 420. Furthermore, by setting the annular body part 430, the first sealing lug 410 and the second sealing lug 420 can be pre-assembled on the connecting pipe 200, and then the connecting pipe 200, the profiled welding structure 400 and the liquid cooling plate 100 are brazed, which greatly reduces the difficulty of brazing and improves the welding efficiency of brazing.

[0040] In an embodiment, the first sealing lug 410, the second sealing lug 420 and the annular body part 430 are integrally formed.

[0041] In this way, the structural strength of the profiled welding structure 400 is improved.

[0042] In an embodiment, as shown in Figure 2 The connecting pipe 200 is provided with a positioning ring 210, and the positioning ring 210 abuts against the profiled welding structure 400.

[0043] In this way, the profiled welding structure 400 can be prevented from being offset during brazing.

[0044] In an embodiment, as shown in Figures 3-4 The profiled welding structure 400 further includes a first clamping jaw 440 and a second clamping jaw 450. The first clamping jaw 440 is connected at one end to the first sealing lug 410 and extends at the other end along the connecting seam between the first end plate 110 and the second end plate 120 towards a direction away from the first sealing lug 410, and the first clamping jaw 440 is provided with a first clamping groove 441, and the first end plate 110 and the second end plate 120 can be clamped into the first clamping groove 441 and welded with the inner wall of the first clamping groove 441. The second clamping jaw 450 is connected at one end to the second sealing lug 420 and extends at the other end along the connecting seam between the first end plate 110 and the second end plate 120 towards a direction away from the second sealing lug 420, and the second clamping jaw 450 is provided with a second clamping groove 451, and the first end plate 110 and the second end plate 120 can be clamped into the second clamping groove 451 and welded with the inner wall of the second clamping groove 451.

[0045] In this way, during brazing of the profiled welding structure 400, the first end plate 110 and the second end plate 120 can provide a limiting effect on the profiled welding structure 400 to prevent thermal stress deformation of the profiled welding structure 400. Moreover, in this way, the assembly strength of the profiled welding structure 400 is significantly improved.

[0046] In one embodiment, the first claw 440, the second claw 450, the first sealing ear 410, the second sealing ear 420, and the annular main body 430 are integrally formed.

[0047] Furthermore, in one embodiment, the cross-section of the first claw 440 is U-shaped, and the inner wall shape of the first slot 441 is adapted to the shape of the first end plate 110 and the second end plate 120.

[0048] Similarly, the cross-section of the second claw 450 is U-shaped, and the inner wall shape of the second slot 451 is adapted to the shape of the first end plate 110 and the second end plate 120.

[0049] Furthermore, in one embodiment, as Figures 3-4 As shown, the first claw 440 includes a first claw body 442, a first flange 443, and a second flange 444. The first claw body 442 is connected to the first sealing ear 410. One end of the first claw body 442 is bent toward the direction close to the liquid cooling plate 100 to form the first flange 443, and the other end of the first claw body 442 is bent toward the direction close to the liquid cooling plate 100 to form the second flange 444.

[0050] Similarly, in one embodiment, such as Figures 3-4 As shown, the second claw 450 includes a second claw body 452, a third flange 453 and a fourth flange 454. The second claw body 452 is connected to the second sealing ear 420. One end of the second claw body 452 is bent toward the direction close to the liquid cooling plate 100 to form the third flange 453, and the other end of the second claw body 452 is bent toward the direction close to the liquid cooling plate 100 to form the fourth flange 454.

[0051] In one embodiment, such as Figure 4 As shown, the contour welding structure 400 also includes a connecting strip 460 extending along the connecting seam between the first end plate 110 and the second end plate 120. The connecting strip 460 connects the first sealing ear 410 and the second sealing ear 420 of the adjacent contour welding structure 400. The connecting strip 460 is sealed and welded to the connecting seam of the first end plate 110 and the second end plate 120, and the adjacent annular main body 430 and the connecting strip 460 are integrally formed.

[0052] This further improves the sealing performance of the first end plate 110 and the second end plate 120, and the interconnection of adjacent annular main body parts 430 greatly enhances the ability of the conformal welding structure 400 to resist thermal stress deformation.

[0053] In one embodiment, such as Figure 5As shown, the profiled welding structure 400 further comprises a first sleeve edge 471 and a second sleeve edge 472, the first sleeve edge 471 is arranged between the first sealing lug 410 and the second sealing lug 420 and at one end of the annular body portion 430, and the second sleeve edge 472 is arranged between the first sealing lug 410 and the second sealing lug 420 and at the other end of the annular body portion 430, one end of the first sleeve edge 471 is connected to the annular body portion 430, and the other end extends towards the first end plate 110 to the outer wall of the communication port 140, one end of the second sleeve edge 472 is connected to the annular body portion 430, and the other end extends towards the second end plate 120 to the outer wall of the communication port 140, so that the profiled welding structure 400 can be sleeved on the outside of the communication port 140 through the first sleeve edge 471 and the second sleeve edge 472.

[0054] It should be noted that the first sleeve edge 471 is arranged between the first sealing lug 410 and the second sealing lug 420 and at one end of the annular body portion 430, and the second sleeve edge 472 is arranged between the first sealing lug 410 and the second sealing lug 420 and at the other end of the annular body portion 430, which means that the first sleeve edge 471, the second sleeve edge 472, the first sealing lug 410 and the second sealing lug 420 are arranged at four positions of the annular body portion 430 respectively, and the first sleeve edge 471 and the second sleeve edge 472 are arranged opposite to each other, and the first sealing lug 410 and the second sealing lug 420 are arranged opposite to each other.

[0055] Due to the existence of the first sealing lug 410 and the second sealing lug 420, the first sleeve edge 471 and the second sleeve edge 472 cannot form a closed sleeve, therefore, the profiled welding structure 400 is sleeved on the outside of the communication port 140 through the first sleeve edge 471 and the second sleeve edge 472 respectively, which not only improves the assembly strength of the profiled welding structure 400, but also does not interfere with the sealing of the triangular cavity region 310.

[0056] Specifically, the first sleeve edge 471 and the second sleeve edge 472 are both in arc-shaped structure.

[0057] Further, in an embodiment, the first sleeve edge 471, the second sleeve edge 472, the first sealing lug 410, the second sealing lug 420 and the annular body portion 430 are integrally formed.

[0058] But not limited to this, in other embodiments, the first sleeve edge 471, the second sleeve edge 472, the first sealing lug 410, the second sealing lug 420 and the annular body portion 430 can also be welded.

[0059] Further, in an embodiment, as Figure 6As shown, the profiled welding structure 400 includes a first solder filling layer 481, a second solder filling layer 482, and a covering sealing layer 483, and the first solder filling layer 481 and the second solder filling layer 482 are respectively attached to two sides of the covering sealing layer 483. The first solder filling layer 481 is arranged on the side of the covering sealing layer 483 close to the liquid cooling plate 100, and the first solder filling layer 481 can melt and fill the welding gap 300 between the connecting pipe 200 and the communication opening 140, so that the covering sealing layer 483 can be connected to the liquid cooling plate 100 and sealed at the opening of the welding gap 300. The second solder filling layer 482 is arranged on the side of the covering sealing layer 483 away from the liquid cooling plate 100, and the second solder filling layer 482 can melt and fill the connecting gap between the connecting pipe 200 and the covering sealing layer 483 to seal the connection between the covering sealing layer 483 and the connecting pipe 200.

[0060] It should be noted that the first sealing lug 410, the second sealing lug 420, and the annular body part 430 are all three-layer structures, that is, the first sealing lug 410 includes the first solder filling layer 481, the second solder filling layer 482, and the covering sealing layer 483, the second sealing lug 420 also includes the first solder filling layer 481, the second solder filling layer 482, and the covering sealing layer 483, and the annular body part 430 also includes the first solder filling layer 481, the second solder filling layer 482, and the covering sealing layer 483.

[0061] Further, it should be noted that the first solder filling layer 481 and the second solder filling layer 482 are both layers of meltable welding material, and the covering sealing layer 483 is a layer of non-meltable fixed connection.

[0062] Specifically, in an embodiment, the material of the first solder filling layer 481 and the second solder filling layer 482 is aluminum-silicon alloy plate (also known as 4XXX series aluminum alloy).

[0063] The aluminum-silicon alloy plate takes silicon as the main alloying element. Generally, the silicon content in the aluminum-silicon alloy plate is between 4.5-6.0%. The aluminum-silicon alloy plate has the advantages of low melting point, good melt flowability, easy shrinkage, good wear resistance, and good heat resistance. Therefore, using the aluminum-silicon alloy plate as the welding material layer greatly improves the welding strength of the profiled welding structure 400.

[0064] More specifically, the material of the first solder filling layer 481 and the second solder filling layer 482 includes but is not limited to 4045 aluminum alloy, 4104 aluminum alloy, and 4343 aluminum alloy.

[0065] In an embodiment, the material of the covering sealing layer 483 is aluminum-manganese alloy plate (also known as 3XXX series aluminum alloy) or aluminum-magnesium-silicon alloy plate (also known as 6XXX series aluminum alloy).

[0066] The aluminum-manganese alloy plate and the aluminum-magnesium-silicon alloy plate can be heat treated, and both have high structural strength, so that the welding strength of the profiled welding structure 400 can be significantly improved. Moreover, the aluminum-manganese alloy plate, the aluminum-magnesium-silicon alloy plate and the aluminum-silicon alloy plate have aluminum as the main element, so that the welding between the same metal elements can greatly improve the connection strength between the first filler layer 481, the second filler layer 482 and the covering sealing layer 483. Generally, the liquid cooling plate 100 is made of aluminum alloy, so that the connection strength between the liquid cooling plate 100 and the covering sealing layer 483 can also be improved.

[0067] More specifically, the material of the covering sealing layer 483 includes but is not limited to 3003 aluminum alloy and 6063 aluminum alloy.

[0068] Further, it should be noted that the melting point of the aluminum-manganese alloy plate and the melting point of the aluminum-magnesium-silicon alloy plate are both around 660℃, and the melting point of the aluminum-silicon alloy plate is around 580℃.

[0069] In this way, when the profiled welding structure 400 is brazed, the brazing temperature can be controlled to be between 580℃ (not included) and 660℃ (not included), so that the first filler layer 481 and the second filler layer 482 on both sides are melted, while the covering sealing layer 483 in the middle is not melted.

[0070] During the welding process of the profiled welding structure 400, the first filler layer 481 can be melted and filled in the welding gap 300 between the connecting pipe 200 and the communication port 140, so that the covering sealing layer 483 can be connected to the liquid cooling plate 100 and sealed at the opening of the welding gap 300. The second filler layer 482 can be melted and filled in the connecting gap between the connecting pipe 200 and the covering sealing layer 483, so as to seal and connect the covering sealing layer 483 and the connecting pipe 200. In this way, the entire profiled welding structure 400 can be sealed and connected to the connecting pipe 200 and the liquid cooling plate 100 respectively, greatly improving the connection and sealing of the connecting pipe 200 and the liquid cooling plate 100, and reducing the welding difficulty.

[0071] The technical features of the above-described embodiments can be combined in any manner. To make the description concise, not all possible combinations of the technical features in the above-described embodiments are described, but as long as the combinations of the technical features do not exist, they should be considered as within the scope of the present disclosure.

[0072] The above-described embodiments are merely illustrative of several embodiments of the present application, which are described in more detail and in a specific manner, but should not be construed as limiting the scope of the patent application. It should be noted that for those skilled in the art, several modifications and improvements can be made without departing from the concept of the present application, and these all belong to the protection scope of the present application. Therefore, the patent protection scope of the present application should be subject to the appended claims.

Claims

1. A profiled welding structure for a sealed welding between a cylindrical connecting pipe (200) and a liquid cooling plate (100); wherein, The liquid cooling plate (100) comprises a first end plate (110) and a second end plate (120), the first end plate (110) and the second end plate (120) surround to form a heat exchange cavity (130) and form a plurality of communication openings (140) respectively communicating with the heat exchange cavity (130), a plurality of connecting pipes (200) are respectively arranged between the first end plate (110) and the second end plate (120) at the corresponding communication openings (140), and a welding gap (300) is formed between the outer wall of the connecting pipe (200) and the inner wall of the communication opening (140); The profiled welding structure (400) comprises a first sealing lug (410), a second sealing lug (420) and an annular main body (430), the middle part of the annular main body (430) is provided with a connecting hole (431), the profiled welding structure (400) can be sleeved on the connecting pipe (200) through the connecting hole (431), the first sealing lug (410) and the second sealing lug (420) are respectively connected to the two ends of the annular main body (430), the end of the first sealing lug (410) away from the annular main body (430) extends along the connecting seam between the first end plate (110) and the second end plate (120) to the direction away from the second sealing lug (420), and the end of the second sealing lug (420) away from the annular main body (430) extends along the connecting seam between the first end plate (110) and the second end plate (120) to the direction away from the first sealing lug (410), so that the profiled welding structure (400) can be welded between the liquid cooling plate (100) and the connecting pipe (200) and sealedly cover the opening of the whole welding gap (300); The first sealing lug (410), the second sealing lug (420) and the annular main body (430) are all three-layer structures, the first sealing lug (410), the second sealing lug (420) and the annular main body (430) all comprise a first solder filling layer (481), a second solder filling layer (482) and a covering sealing layer (483), the first solder filling layer (481) and the second solder filling layer (482) are respectively attached to the two sides of the covering sealing layer (483); the first solder filling layer (481) is arranged on the side of the covering sealing layer (483) close to the liquid cooling plate (100), and the first solder filling layer (481) can be melted and filled in the welding gap (300) between the connecting pipe (200) and the communication opening (140), so that the covering sealing layer (483) can be connected to the liquid cooling plate (100) and sealedly cover the opening of the welding gap (300); the second solder filling layer (482) is arranged on the side of the covering sealing layer (483) away from the liquid cooling plate (100), and the second solder filling layer (482) can be melted and filled in the connecting gap between the connecting pipe (200) and the covering sealing layer (483) to seal the covering sealing layer (483) and the connecting pipe (200).

2. The contoured welded structure of claim 1, wherein, The material of the first solder filling layer (481) and the second solder filling layer (482) is aluminum-silicon alloy plate.

3. The contoured welded structure of claim 1, wherein, The material of the covering sealing layer (483) is aluminum-manganese alloy plate or aluminum-magnesium-silicon alloy plate.

4. The contoured welded structure of claim 1, wherein, Further comprising a first clamping jaw (440) and a second clamping jaw (450), one end of the first clamping jaw (440) is connected to the first sealing lug (410), the other end extends along the connecting seam between the first end plate (110) and the second end plate (120) to a direction away from the first sealing lug (410), and the first clamping jaw (440) is provided with a first clamping groove (441), the first end plate (110) and the second end plate (120) can be clamped into the first clamping groove (441) and welded with the inner wall of the first clamping groove (441); one end of the second clamping jaw (450) is connected to the second sealing lug (420), the other end extends along the connecting seam between the first end plate (110) and the second end plate (120) to a direction away from the second sealing lug (420), and the second clamping jaw (450) is provided with a second clamping groove (451), the first end plate (110) and the second end plate (120) can be clamped into the second clamping groove (451) and welded with the inner wall of the second clamping groove (451).

5. The contoured welded structure of claim 4, wherein, The first clamping jaw (440), the second clamping jaw (450), the first sealing lug (410), the second sealing lug (420) and the annular body part (430) are integrally formed.

6. The contoured welded structure of claim 4, wherein, The first clamping jaw (440) comprises a first jaw body (442), a first flange (443) and a second flange (444), the first jaw body (442) is connected to the first sealing lug (410), one end of the first jaw body (442) is bent to form the first flange (443) towards the direction close to the liquid cooling plate (100), the other end of the first jaw body (442) is bent to form the second flange (444) towards the direction close to the liquid cooling plate (100). And / or, the second clamping jaw (450) comprises a second jaw body (452), a third flange (453) and a fourth flange (454), the second jaw body (452) is connected to the second sealing lug (420), one end of the second jaw body (452) is bent to form the third flange (453) towards the direction close to the liquid cooling plate (100), the other end of the second jaw body (452) is bent to form the fourth flange (454) towards the direction close to the liquid cooling plate (100).

7. The contoured welded structure of claim 1, wherein, Further comprising a connecting strip (460) extending along the connecting seam between the first end plate (110) and the second end plate (120), the connecting strip (460) connects the first sealing lug (410) and the second sealing lug (420) of the adjacent profiling welding structure (400), the connecting strip (460) is sealingly welded at the connecting seam of the first end plate (110) and the second end plate (120), and the adjacent annular body part (430) and the connecting strip (460) are integrally formed.

8. The contoured welded structure of claim 1, wherein, Further comprising a first sleeve edge (471) and a second sleeve edge (472), the first sleeve edge (471) is arranged between the first sealing lug (410) and the second sealing lug (420) and at one end of the annular body portion (430), the second sleeve edge (472) is arranged between the first sealing lug (410) and the second sealing lug (420) and at the other end of the annular body portion (430), one end of the first sleeve edge (471) is connected to the annular body portion (430) and the other end extends towards the first end plate (110) to the outer wall of the communication port (140), one end of the second sleeve edge (472) is connected to the annular body portion (430) and the other end extends towards the second end plate (120) to the outer wall of the communication port (140), so that the profiled welding structure (400) can be sleeved on the outside of the communication port (140) through the first sleeve edge (471) and the second sleeve edge (472).

9. The contoured welded structure of claim 8, wherein, The first sleeve edge (471), the second sleeve edge (472), the first sealing lug (410), the second sealing lug (420) and the annular body portion (430) are integrally formed.

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