Radiator structure
By setting a stepped groove structure and limiting plate inside the manifold, combined with annular aluminum wire solder, the problem of uncertain insertion depth between the U-shaped harmonica tube and the manifold was solved, achieving uniform assembly and high-quality welding, thus improving the welding quality and cooling efficiency of the radiator.
Patent Information
- Authority / Receiving Office
- CN · China
- Patent Type
- Applications(China)
- Current Assignee / Owner
- Filing Date
- 2025-12-11
- Publication Date
- 2026-04-10
AI Technical Summary
When the U-shaped harmonica tube and the manifold are connected by insertion welding, the insertion depth cannot be controlled, resulting in uneven assembly gaps and voids at the weld edge, which reduces the welding quality.
A stepped groove structure and a limiting plate are set inside the manifold. Combined with annular aluminum wire solder, the stepped groove structure with matching size is inserted for positioning to ensure consistent assembly depth. The solder is then melted and welded at high temperature to fill gaps and improve the welding rate.
It achieves uniformity of assembly gaps, reduces welding voids, improves welding quality and strength, and integrates the radiator structure, saving layout space and ensuring effective cooling.
Smart Images
Figure CN121843048A_ABST
Abstract
Description
TECHNICAL FIELD
[0001] The present application relates to the technical field of heat sinks, in particular to a heat sink structure. BACKGROUND
[0002] In the electrical architecture of electric vehicles and new energy vehicles, the DC-DC converter is a power conversion device, and its function is to convert the high-voltage direct current of the power battery into the direct current of different voltage levels required by the low-voltage electrical system of the vehicle. The conversion process is dominated by a dedicated control chip, but the control chip will generate a large amount of heat if used for a long time, which will reduce its service life if not dissipated in time. Currently, a liquid-cooled heat sink is usually used, which mainly consists of a manifold and a U-shaped mouthpiece pipe. The control chip is usually installed on the surface of the U-shaped mouthpiece pipe. When it works, the heat generated by the chip is transferred to the wall of the mouthpiece pipe through heat conduction. The cooling liquid is distributed in the manifold and flows through the internal channel of the U-shaped mouthpiece pipe. Through convection heat exchange, the heat is taken away, thereby achieving heat dissipation of the chip.
[0003] The U-shaped mouthpiece pipe and the manifold are usually connected by plug-in welding. The manifold is pre-processed with a slot matching the cross section of the mouthpiece pipe. The end of the mouthpiece pipe is inserted into the slot to realize assembly positioning. However, the depth of the mouthpiece pipe inserted into the manifold slot lacks control. This uncertainty of the insertion depth may cause uneven assembly gap between the edge of the mouthpiece pipe and the sidewall of the manifold slot during subsequent welding, and voids are easily welded at the edge joint area of the weld, which reduces the overall weld rate of the joint area and affects the welding quality.
[0004] To solve the above problems, a heat sink structure is provided in the present application. SUMMARY
[0005] The present application provides a heat sink structure, which solves the problem that the U-shaped mouthpiece pipe and the manifold are connected by plug-in welding in the related art, but the depth of the mouthpiece pipe inserted into the manifold slot cannot be controlled, resulting in uneven assembly gap, voids at the edge of the weld during welding, reduced weld rate, and affected welding quality.
[0006] The present application provides a heat sink structure, which solves the problem that the U-shaped mouthpiece pipe and the manifold are connected by plug-in welding in the related art, but the depth of the mouthpiece pipe inserted into the manifold slot cannot be controlled, resulting in uneven assembly gap, voids at the edge of the weld during welding, reduced weld rate, and affected welding quality.
[0007] The first manifold and the second manifold are arranged side by side, and the second manifold is communicated with a third manifold on the side close to the first manifold. First step groove structures are formed on the second manifold and the first mouthpiece pipe. Second step groove structures are formed on one end of the first manifold and the third manifold. The first step groove structure and the second step groove structure are different in size, and annular aluminum wire solder is embedded in the first step groove structure and the second step groove structure.
[0008] The first mouth pipe and the second mouth pipe are of different sizes, the first mouth pipe is matched with the first stepped groove structure, the second mouth pipe is matched with the second stepped groove structure, the bottom of the first mouth pipe is respectively inserted into the two first stepped groove structures, and the bottom of the second mouth pipe is respectively inserted into the two second stepped groove structures.
[0009] As a further optimization scheme of the present application, the first stepped groove structure comprises a first annular groove and a second annular groove, the first annular groove is arranged in the first current collecting pipe and the second current collecting pipe, the second annular groove is arranged in the first annular groove, and the first annular groove and the second annular groove form a stepped structure, and the inner wall of the first annular groove is embedded with an annular aluminum wire solder.
[0010] As a further optimization scheme of the present application, the inner wall of the two ends of the second annular groove is fixedly connected with a limiting piece, which is used for limiting the depth of insertion of the first mouth pipe.
[0011] As a further optimization scheme of the present application, the bottom of the first mouth pipe is integrally connected with a protruding table on both sides, the protruding table on both sides of the bottom of the first mouth pipe is respectively inserted into the two second annular grooves and placed on the limiting piece, and the two ends of the bottom of the first mouth pipe are respectively clamped in the two first annular grooves and placed on the stepped structure.
[0012] As a further optimization scheme of the present application, the inner layer of the first mouth pipe is provided with a flow passage, the bottom of the two protruding tables is provided with a flow hole in communication with the flow passage, and the flow hole in the bottom of the two protruding tables is respectively in communication with the second annular groove in the first current collecting pipe and the second current collecting pipe.
[0013] As a further optimization scheme of the present application, one end of the second current collecting pipe and the third current collecting pipe is connected with a through plate, and the through plate is provided with a cavity in communication with the second current collecting pipe and the third current collecting pipe.
[0014] As a further optimization scheme of the present application, the two ends of the first mouth pipe are respectively provided with an assembly plate, and an assembly cavity is formed between the first mouth pipe and the two assembly plates.
[0015] As a further optimization scheme of the present application, the surface of the first mouth pipe is provided with a lead hole in communication with the assembly cavity, and the lead hole is not in communication with the flow passage.
[0016] The above technical scheme of the present application has the following beneficial technical effects:
[0017] 1.The present application is characterized in that a first stepped groove structure is formed in the first manifold and the second manifold, the first stepped groove structure comprises a first annular groove and a second annular groove, and a protruding platform is integrally connected to the bottom of the first flute on both sides; during use, the annular aluminum solder is embedded in the inner wall of the first annular groove, and then the protruding platform is inserted into the second annular groove, so that the two ends of the first flute are placed in the first annular groove and clamped on the stepped structure; the gap is filled with annular aluminum solder; similarly, the second stepped groove structure on the first manifold and the third manifold is used for assembling the second flute; this design realizes the assembly and positioning of the first flute, the first manifold and the second manifold, ensures uniform assembly gap, and reduces welding voids after the annular aluminum solder melts, thereby improving the welding rate and welding quality.
[0018] 2.In order to limit the depth of the protruding platform at the bottom of the first flute inserted into the second annular groove, a limiting piece is installed on the inner wall of both ends of the second annular groove; when the protruding platform at the bottom of the first flute is inserted into the second annular groove, the limiting piece can be used for limiting and resisting; and during welding, a circle of solder can be embedded along the surface edge of the limiting piece, thereby improving the strength of the protruding platform welding; the above design provides a limiting point for the insertion of the protruding platform into the second annular groove, effectively eliminates the problem of uncertain insertion depth, further ensures the consistency of the assembly gap, and the additional embedded solder can also increase the strength of the weld;
[0019] 3.After the first flute and the second flute are welded, the control panel can be installed in the assembly chamber of the first flute and the second flute, and the components can be installed on the surface of the first flute and the second flute; during operation, cold water is introduced into one end of the first manifold, flows into the third manifold along the second flute, and then flows into the first flute along the second manifold; then the water flows back to the first manifold along the first flute, and is discharged from the other end of the first manifold, forming a circulation; the above design uses the assembly chamber of the first flute and the second flute as the installation space of the control panel, realizes the integration of structure and function, saves the overall layout space, and can ensure that the radiator effectively cools the control panel and the components. BRIEF DESCRIPTION OF DRAWINGS
[0020] Figure 1 The present application provides a whole structure diagram of a radiator structure;
[0021] Figure 2 The present application provides a bottom structure diagram of a radiator structure;
[0022] Figure 3 The present application provides a cooperation structure diagram of the first manifold, the second manifold and the third manifold;
[0023] Figure 4 The present application providesFigure 3 Enlarged view of the middle A;
[0024] Figure 5 Schematic view of the bottom structure of the first harmonica tube of the present application;
[0025] Figure 6 Schematic view of the bottom structure of the second harmonica tube of the present application.
[0026] The figure mark: 1, the first manifold; 2, the second manifold; 21, the third manifold; 22, the conducting plate; 3, the first harmonica tube; 31, the convex platform; 32, the flow hole; 33, the assembly plate; 34, the lead hole; 4, the second harmonica tube; 5, the first step groove structure; 51, the first annular groove; 52, the second annular groove; 6, the second step groove structure; 7, the limiting sheet. DETAILED DESCRIPTION
[0027] In order to make the purpose, technical scheme and advantages of the present application more clear and obvious, the present application is further described in detail below in combination with specific embodiments and with reference to the drawings. It should be understood that these descriptions are only exemplary and are not intended to limit the scope of the present application. In addition, in the following description, the description of known structures and technologies is omitted to avoid unnecessary confusion of the concept of the present application.
[0028] As Figures 1-6 shown, the heat sink structure proposed by the present application includes a first manifold 1, a second manifold 2, a first harmonica tube 3 and a second harmonica tube 4;
[0029] The first manifold 1 and the second manifold 2 are arranged side by side, and the second manifold 2 is communicated with the third manifold 21 near one side of the first manifold 1. The second manifold 2 and the first harmonica tube 3 are both provided with the first step groove structure 5. The first end of the first manifold 1 and the third manifold 21 are both provided with the second step groove structure 6. The first step groove structure 5 and the second step groove structure 6 are the same in structure but different in size. The annular aluminum wire solder is embedded in the first step groove structure 5 and the second step groove structure 6.
[0030] The first harmonica tube 3 and the second harmonica tube 4 are the same in structure but different in size. The first harmonica tube 3 is adapted to the first step groove structure 5, and the second harmonica tube 4 is adapted to the second step groove structure 6. The bottom of the first harmonica tube 3 is respectively inserted into the two first step groove structures 5, and the bottom of the second harmonica tube 4 is respectively inserted into the two second step groove structures 6.
[0031] The third manifold 21 is arranged between the first manifold 1 and the second manifold 2, and is used to realize the distribution and combination of the cooling liquid. The first stepped groove structure 5 and the second stepped groove structure 6 are stepped structures with different sizes, and are internally provided with annular aluminum solder. Then, the two sides of the bottom of the first flute pipe 3 are respectively inserted into the first stepped groove structure 5 arranged in the first manifold 1 and the second manifold 2. The two sides of the bottom of the second flute pipe 4 are respectively inserted into the second stepped groove structure 6 arranged in the first manifold 1 and the third manifold 21. The insertion and positioning are realized through the size-matched stepped groove structure, the assembly depth is effectively controlled, the insertion gap is uniformly ensured, the problems of gap or uneven welding caused by improper assembly during the welding process are avoided, the radiator structure can be sent into a high-temperature furnace, the solder in the first stepped groove structure 5 and the second stepped groove structure 6 is melted under the action of high temperature, and the welding of the first flute pipe 3 and the second flute pipe 4 is realized. The above design reduces the welding cavity problem caused by uneven gap, thereby improving the overall welding rate and welding quality of the joint area.
[0032] In the embodiment, the first stepped groove structure 5 includes a first annular groove 51 and a second annular groove 52. The first annular groove 51 is arranged in the first manifold 1 and the second manifold 2. The second annular groove 52 is arranged in the first annular groove 51, and a stepped structure is formed between the first annular groove 51 and the second annular groove 52. The inner wall of the first annular groove 51 is embedded with annular aluminum solder. The stepped structure formed by the first annular groove 51 and the second annular groove 52 can preliminarily limit the installation of the first flute pipe 3, so that the bottom of the first flute pipe 3 can be clamped at the step, and the butt joint posture of the first flute pipe 3, the first manifold 1 and the second manifold 2 is ensured. The annular aluminum solder in the first annular groove 51 can uniformly fill the gap between the groove body and the first flute pipe 3 after being melted in a high-temperature environment. Compared with the traditional connection mode without a groove body, the structure increases the contact area of the solder and the connecting piece, reduces the welding cavity, and improves the structural strength of the welding part.
[0033] In the embodiment, the inner walls of the two ends of the second annular groove 52 are fixedly provided with limiting pieces 7, which are used to limit the insertion depth of the first flute pipe 3. When the bottom of the first flute pipe 3 is inserted into the second annular groove 52, the limiting pieces 7 will form a hard resistance with the protruding part of the bottom of the first flute pipe 3, thereby limiting the insertion depth. The disadvantages of uncertain depth in the traditional insertion type connection are eliminated, the assembly gap of the first flute pipe 3, the first manifold 1 and the second manifold 2 is uniformly uniform, the problems of excessive or insufficient local solder during welding caused by uneven gap are avoided, the defects such as welding cavity and virtual welding are reduced, and the overall welding quality is improved.
[0034] In this embodiment, the bottom of the first harmonica tube 3 is integrally connected with a protruding table 31 on both sides, the protruding table 31 on both sides of the bottom of the first harmonica tube 3 is respectively inserted into the two second annular grooves 52 and placed on the limiting sheet 7, and the two ends of the bottom of the first harmonica tube 3 are respectively clamped in the two first annular grooves 51 and placed on the stepped structure; during installation, the protruding table 31 at the bottom of the first harmonica tube 3 is inserted into the second annular groove 52, the protruding table 31 and the second annular groove 52 form a fit, combined with the depth limiting of the limiting sheet 7, the double positioning of the first harmonica tube 3 on the first and second collecting tubes 1 and 2 is realized, and the two ends of the bottom of the first harmonica tube 3 are clamped on the step formed between the first and second annular grooves 51 and 52, which further improves the stability of the connection and prevents loosening or displacement during subsequent welding and long-term use, thereby ensuring the welding rate of the welded joint.
[0035] In this embodiment, the inner layer of the first harmonica tube 3 is provided with a flow passage, the bottom of each of the two protruding tables 31 is provided with a flow hole 32 in communication with the flow passage, and the flow hole 32 at the bottom of each of the two protruding tables 31 is in communication with the second annular groove 52 in the first and second collecting tubes 1 and 2, respectively; the cooling liquid can pass through the second annular groove 52 in the first and second collecting tubes 1 and 2, enter and exit the flow passage of the first harmonica tube 3 through the flow hole 32, and realize smooth flow of the cooling liquid between the first and second collecting tubes 1 and 2 and the first harmonica tube 3. The design quickly removes the heat on the surface of the first harmonica tube 3 through convection heat exchange.
[0036] In this embodiment, the second collecting tube 2 and the third collecting tube 21 are connected with a through plate 22 at one end, and the through plate 22 is provided with cavities in communication with the second and third collecting tubes 2 and 21, respectively; the cavities in the through plate 22 act as a bridge to realize the intercommunication of the cooling liquid between the second and third collecting tubes 2 and 21.
[0037] In this embodiment, the two ends of the first harmonica tube 3 are provided with assembly plates 33, and an assembly chamber is formed between the first harmonica tube 3 and the two assembly plates 33 for mounting a control board.
[0038] The control board can be installed in the assembly chamber by using the structural space of the first harmonica tube 3, thereby realizing structural integration of the heat sink and the control board, integrating the installation space of the control board and the heat dissipation structure, not needing to additionally provide a separate mounting bracket for the control board, saving the layout space of the overall equipment, and at the same time, the control board is close to the first harmonica tube 3, and the cooling liquid flowing in the first harmonica tube 3 can directly remove the heat generated by the operation of the control board through heat conduction, thereby achieving heat dissipation.
[0039] It should be noted that the inner side of the second harmonica tube 4 can also be provided with a control board to achieve the above-mentioned heat dissipation effect.
[0040] In the embodiment, the surface of the first mouth pipe 3 is provided with a lead hole 34 which is in communication with the assembly chamber, and the lead hole 34 is not in communication with the flow passage;
[0041] The lead hole 34 provides a wire channel for the wire of the control board in the assembly chamber, and in use, the components can be installed on the surface of the first mouth pipe 3, and the wire between the components and the control board can pass through the lead hole 34.
[0042] In the specific embodiment, when the heat sink structure works, first, the control board is installed into the assembly chamber formed by the first mouth pipe 3 and the two assembly plates 33, the wire of the control board can be regularly wired through the lead hole 34 on the convex table 31, the cooling liquid enters from one end of the first collecting pipe 1, first flows into the second mouth pipe 4, and then flows into the third collecting pipe 21 along the second mouth pipe 4, and then the cooling liquid flows into the second collecting pipe 2 through the cavity in the through plate 22, and then flows into the flow hole 32 of the first mouth pipe 3 through the first step groove structure 5 on the second collecting pipe 2, and then flows into the flow passage of the first mouth pipe 3, in the flow process of the cooling liquid, the heat generated by the control board in the assembly chamber and the surfaces of the first mouth pipe 3 and the second mouth pipe 4 is transferred to the pipe wall of the first mouth pipe 3 and the second mouth pipe 4 through heat conduction, and when the cooling liquid flows in the flow passage, the heat is absorbed through convection heat exchange, the cooling liquid which completes the heat exchange flows back to the first collecting pipe 1 along the flow passage of the first mouth pipe 3, and finally is discharged from the other end of the first collecting pipe 1, forming a complete cooling cycle.
[0043] The welding principle of the heat sink is as follows:
[0044] In use, the inner wall of the first annular groove 51 is embedded with annular aluminum wire solder, then the protruding platforms 31 on both sides of the bottom of the first harmonica tube 3 are inserted into the two second annular grooves 52 respectively and placed on the limiting sheets 7, so that the two ends of the bottom of the first harmonica tube 3 are placed in the two first annular grooves 51 respectively and clamped on the stepped structure formed by the first annular grooves 51 and the second annular grooves 52, the annular aluminum wire solder fills the small gap between the first annular grooves 51 and the protruding platforms 31, and the first manifold 1 and the third manifold 21 are both provided with second stepped groove structures 6, the second stepped groove structures 6 are the same in structure as the first stepped groove structures 5 but different in size, then the two sides of the bottom of the second harmonica tube 4 are inserted into the two second stepped groove structures 6 in the same way, the heat sink structure can be sent into a high-temperature furnace, under the action of high temperature, the annular aluminum wire solder in the first annular grooves 51 melts, the welding of the protruding platforms 31 on the bottom of the first harmonica tube 3 is realized, and thus the welding of the first harmonica tube 3 and the second harmonica tube 4 is completed, the above design realizes the assembly and positioning of the first harmonica tube 3, the first manifold 1 and the second manifold 2 through the cooperation of the first stepped groove structures 5 and the protruding platforms 31, ensures the uniformity of the assembly gap, the pre-placed annular aluminum wire solder can effectively fill the gap between the first annular grooves 51 and the protruding platforms 31 after melting, reduces the problem of welding cavities caused by uneven gaps, and thus improves the overall welding rate and welding quality of the joint area.
[0045] The above describes the embodiments of the present application, but the embodiments are not limited to the above specific embodiments, the above specific embodiments are only illustrative but not restrictive, and those skilled in the art can make many forms under the inspiration of the embodiments, which all belong to the protection of the embodiments.
Claims
1. A heat spreader structure, characterized by, It comprises a first manifold (1), a second manifold (2), a first organ pipe (3) and a second organ pipe (4); The first manifold (1) and the second manifold (2) are arranged side by side, and the second manifold (2) is communicated with a third manifold (21) near one side of the first manifold (1); the second manifold (2) and the first organ pipe (3) are both provided with a first stepped groove structure (5); the first manifold (1) and the third manifold (21) are both provided with a second stepped groove structure (6); the first stepped groove structure (5) and the second stepped groove structure (6) are different in structure and size; and the first stepped groove structure (5) and the second stepped groove structure (6) are both embedded with annular aluminum wire solder. The first organ pipe (3) and the second organ pipe (4) are different in structure and size; the first organ pipe (3) is matched with the first stepped groove structure (5), and the second organ pipe (4) is matched with the second stepped groove structure (6); the bottom of the first organ pipe (3) is respectively inserted into two first stepped groove structures (5), and the bottom of the second organ pipe (4) is respectively inserted into two second stepped groove structures (6).
2. The heat spreader structure of claim 1, wherein, The first stepped groove structure (5) comprises a first annular groove (51) and a second annular groove (52); the first manifold (1) and the second manifold (2) are both provided with the first annular groove (51); the first annular groove (51) is provided with the second annular groove (52); and the first annular groove (51) and the second annular groove (52) form a stepped structure, and the inner wall of the first annular groove (51) is embedded with annular aluminum wire solder.
3. A heat spreader structure according to claim 2, wherein, The inner wall of both ends of the second annular groove (52) is fixed with a limiting sheet (7) for limiting the depth of insertion of the first organ pipe (3).
4. The heat spreader structure of claim 3, wherein, The bottom of the first organ pipe (3) is integrally connected with a convex platform (31); the convex platform (31) of the bottom of the first organ pipe (3) is respectively inserted into two second annular grooves (52) and placed on the limiting sheet (7); and the two ends of the bottom of the first organ pipe (3) are respectively clamped in two first annular grooves (51) and placed on the stepped structure.
5. The heat spreader structure of claim 4, wherein, The inner layer of the first organ pipe (3) is provided with a flow passage; the bottom of each of the two convex platforms (31) is provided with a flow hole (32) communicated with the flow passage; and the flow hole (32) of the bottom of each of the two convex platforms (31) is respectively communicated with the second annular groove (52) in the first manifold (1) and the second manifold (2).
6. The heat spreader structure of claim 1, wherein, One end of the second manifold (2) and the third manifold (21) is connected with a through plate (22), and the through plate (22) is provided with a cavity communicated with the second manifold (2) and the third manifold (21).
7. The heat spreader structure of claim 1, wherein, Both ends of the first organ pipe (3) are provided with an assembly plate (33), and an assembly chamber is formed between the first organ pipe (3) and the two assembly plates (33).
8. The heat spreader structure of claim 7, wherein, The surface of the first organ pipe (3) is provided with a lead hole (34) communicated with the assembly chamber, and the lead hole (34) is not communicated with the flow passage.