Temperature-uniforming plate and jig for preventing deviation and net pressing of internal supporting structure of temperature-uniforming plate
By designing a combined structure of upper and lower plates for the fixture, the problems of copper column misalignment and mesh pressing were solved, enabling efficient production and precise positioning of the heat spreader, reducing the scrap rate and extending product life.
Patent Information
- Application Number
- CN202520093172.1
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- Filing Date
- 2025-01-15
- Publication Date
- 2025-12-30
- Estimated Expiration
- 2035-01-15
AI Technical Summary
During the production of heat exchange plates, copper pillars are prone to misalignment, mesh pressing, and powder adhesion to the end face, resulting in a high scrap rate. Existing fixtures cannot effectively prevent such phenomena.
A fixture was designed, including an upper fixture plate and a lower fixture plate. The lower fixture plate is provided with a recessed part corresponding to the heat-conducting support and a protrusion corresponding to the through hole. After the copper column is fixed in position by resistance welding, a powder ring is put on to prevent the copper column from shifting and pressing the mesh.
It improves production efficiency, ensures accurate positioning of copper pillars, avoids copper pillar misalignment and end face powder adhesion, reduces scrap rate, and extends product life.
Smart Images
Figure CN223745138U_ABST
Abstract
Description
TECHNICAL FIELD
[0001] The utility model relates to a heat dissipation device technical field, especially in a kind of vapor chamber;The present application further relates to a jig for preventing the internal support structure of vapor chamber from being offset and pressing net. BACKGROUND
[0002] Vapor chamber, VC for short, utilizes the cooling working medium phase change evaporation in sealed space to rapidly spread heat to cavity, and at condensing end, working medium condenses into liquid, and then flows back to heat source end by capillary force and gravity.Vapor chamber is a high-efficiency heat dissipation device with high thermal conductivity and low thermal resistance, and is widely applied to thermal management systems in different fields such as electronic equipment, electronic components, base station, server, new energy vehicle, etc.
[0003] In the existing processing and production link, when copper column is placed in vapor chamber and then transported to furnace, copper column may be offset and pressed, and copper column end surface may be adhered with powder, which may cause high scrap rate in actual operation. SUMMARY
[0004] One of the purposes of the utility model is to provide a vapor chamber with reasonable structure and high-efficiency heat dissipation.The second purpose of the utility model is to provide a jig for preventing the internal support structure of vapor chamber from being offset and pressed.
[0005] To solve the above technical problems, the utility model adopts the following technical solutions:
[0006] A vapor chamber includes a matched cover plate unit and bottom plate unit, and the butt joint surfaces of the two are flat and form a cavity in the surrounding edge after butt joint.The edge of the cavity is provided with ≥1 liquid passage communicating with the outside, and a plurality of solid columnar heat-conducting support members are arranged in the cavity, and a powder ring is sleeved on the periphery of part or all of the heat-conducting support members.The heat-conducting support members are pre-connected with any one of the cover plate unit and the bottom plate unit.
[0007] Further, the heat-conducting support members are divided into two groups arranged in the inner and outer peripheries, the heat-conducting support members arranged in the outer periphery surround the heat-conducting support members arranged in the inner periphery, and the heat-conducting support members arranged in the inner periphery are arranged in a rectangular lattice shape, and a powder ring is sleeved on the periphery of each heat-conducting support member.
[0008] Further, the edge of the cover plate unit and the bottom plate unit is provided with a clamping assembly and a through hole, and the through hole is located between the cavity and the clamping assembly.
[0009] Further, the clamping assembly includes a clamping groove and a clamping protrusion in one-to-one correspondence.
[0010] A jig for preventing the internal support structure of a vapor chamber from being offset from the screen, used for manufacturing the vapor chamber of any one of the above solutions, comprising a jig upper plate and a jig lower plate, one side of the jig lower plate towards the jig upper plate is provided with a plurality of groups of recesses and protrusions, each group is of the same pattern and is provided with protrusions surrounding recesses.
[0011] Further, the recesses are used for accommodating the heat-conducting support, the position layout of the recesses corresponds to the heat-conducting support; the protrusions are used for sleeving the through holes, the position layout of the protrusions corresponds to the through holes.
[0012] Further, the number of groups of the recesses and the protrusions is greater than or equal to 2; the height of the protrusions is greater than or equal to the thickness of the through holes.
[0013] Further, the number of the jig upper plates is 1, and the number of the jig lower plates is greater than or equal to 1, a plurality of jig lower plates can be used in a stacked manner and only one jig upper plate is needed to cover the uppermost part.
[0014] The technical scheme of the utility model has the beneficial effects that:
[0015] The vapor chamber has high heat dissipation efficiency and accurate position of the internal heat-conducting support; in the production process, the jig is used to make the heat-conducting support pre-contact and connect with any one of the cover plate unit and the bottom plate unit, compared with manually placing the copper powder column, the production efficiency is greatly improved; after the finished product is obtained, the film detection ensures that the copper column position is in the middle, the position accuracy requirement is met, the copper column end surface is prevented from being contaminated with powder, the service life of the product is increased, and the copper column is prevented from being offset, pressed, and the end surface is prevented from being contaminated with powder, thereby avoiding the scrap caused by the above problems. BRIEF DESCRIPTION OF DRAWINGS
[0016] In order to more clearly illustrate the technical scheme of the embodiments of the utility model, the following will briefly introduce the drawings needed to be used in the embodiment description, and obviously, the drawings in the following description are only some embodiments of the utility model, and for those skilled in the art, other drawings can be obtained according to these drawings without creative labor.
[0017] Figure 1 It is the structure schematic view of the vapor chamber in the utility model;
[0018] Figure 2 It is the structure schematic view of the vapor chamber in the utility model; Figure 1 It is the enlarged schematic view of A in the utility model;
[0019] Figure 3 It is the structure schematic view of the jig in the utility model;
[0020] Figure 4 It is the cooperation schematic view of the jig and the vapor chamber in the utility model;
[0021] The markings in the diagram are: 1. Cover plate unit; 2. Base plate unit; 3. Cavity; 4. Liquid channel; 5. Thermally conductive support; 6. Powder ring; 7. Snap-fit assembly; 7a. Snap-fit groove; 7b. Snap-fit protrusion; 8. Through hole; 9. Fixture upper plate; 10. Fixture upper plate. Detailed Implementation
[0022] The present invention will now be described in further detail with reference to the accompanying drawings. Figures 1-2 As shown, a heat spreader includes a matching cover plate unit 1 and a base plate unit 2. The mating surfaces of the two are flat, and after mating, a cavity 3 is formed in the inner periphery of the mating edges. The edge of the cavity 3 is provided with ≥1 liquid channels 4 connecting to the outside. During the production process of the heat spreader, the liquid channels 4 are used to fill the cavity 3 with working fluid. Several solid columnar heat-conducting support members 5 are provided in the cavity 3. Some or all of the heat-conducting support members 5 are surrounded by powder rings 6. Specifically, the heat-conducting support members 5 are divided into two groups with inner and outer peripheries. The group of heat-conducting support members 5 located on the outer periphery surrounds the group of heat-conducting support members 5 located on the inner periphery. The group of heat-conducting support members 5 located on the inner periphery is arranged in a rectangular dot matrix. Each heat-conducting support member 5 is surrounded by a powder ring 6. The thermally conductive support 5 is a copper pillar. The material and structural characteristics of the powder ring 6 enhance capillary action. Numerous tiny pores exist between the powder particles within the ring, which act like capillaries, allowing the working fluid to rise and diffuse more easily. When the liquid vaporizes at the evaporation end of the vapor chamber and liquefies at the condensation end, the powder ring 6 helps the liquefied liquid quickly flow back to the evaporation end through capillary action, thereby improving the heat dissipation efficiency of the vapor chamber.
[0023] In a further optimization scheme, the edges of the cover plate unit 1 and the bottom plate unit 2 are provided with a snap-fit component 7 and a through hole 8. The through hole 8 is located between the cavity 3 and the snap-fit component 7. The snap-fit component 7 includes a pair of snap-fit grooves 7a and snap-fit protrusions 7b. The snap-fit component 7 is used for alignment when the cover plate unit 1 and the bottom plate unit 2 are engaged.
[0024] In the existing technology, a copper column jig is first used to place the copper column on the welded mesh product (cover plate unit 1 or bottom plate unit 2). The disadvantage is that the copper column is placed manually, and the position of the copper column is easy to be inaccurate. During the process of moving it into the furnace, the copper column is easy to shift, which will lead to the scrapping of the finished product. The end face of the copper column is covered with powder, which will eventually lead to the failure of the reliability (rapid temperature cycle) test.
[0025] Therefore, this solution also discloses a fixture to prevent the internal support structure of the heat exchange plate from shifting the pressure mesh, so as to achieve pre-contact connection between the heat-conducting support 5 and either the cover plate unit 1 or the bottom plate unit 2, in order to solve the above-mentioned problem.
[0026] like Figure 3 , Figure 4As shown, the fixture used to prevent the internal support structure of the heat exchanger from shifting during the manufacturing of the heat exchanger includes an upper fixture plate 9 and a lower fixture plate 10. There is one upper fixture plate 9 and at least one lower fixture plate 10. Multiple lower fixture plates 10 can be stacked in parallel, and only one upper fixture plate 9 is needed to cover the top, resulting in high welding efficiency.
[0027] Specifically, the lower plate 10 of the fixture facing the upper plate 9 of the fixture has several sets of recesses and protrusions. Each set has the same style, with the protrusions surrounding the recesses. The number of sets of recesses and protrusions is ≥2, meaning that multiple workpieces can be placed and welded simultaneously on each layer. The recesses are used to accommodate the heat-conducting support 5, and the position and layout of the recesses correspond to the heat-conducting support 5. The protrusions are used to connect to the through holes 8, and the height of the protrusions must be ≥ the thickness of the through holes 8. The position and layout of the protrusions correspond to the through holes 8.
[0028] This invention positions the copper columns using a graphite jig and then welds them to a fixed position using resistance welding. A powder ring 6 is then fitted onto the column. Specifically, copper columns are evenly distributed in the recessed area of the lower plate 10 of the jig. The cover plate unit 1 or the base plate unit 2 is then placed into the corresponding position on the lower plate 10 of the jig and fitted together. The protrusions are aligned with the through holes 8. Finally, the upper plate 9 of the jig is placed on top and welded using resistance welding. After welding, the column is removed, and the powder ring 6 is fitted onto the desired location. This method prevents powder from adhering to the end face of the copper columns and prevents the copper columns from shifting or pressing against the mesh during transportation. After the copper columns and powder ring 6 are fixed and installed, the cover plate unit 1 and the base plate unit 2 are welded together. This solution effectively avoids copper column shifting and mesh pressing, achieving precise control of the position of the internal support structure of the heat exchange plate.
[0029] The above embodiments based on this utility model are provided for guidance. Through the above description, those skilled in the art can make various changes and modifications without departing from the technical concept of this utility model. Any modifications, equivalent substitutions, improvements, etc., within the spirit and principles of this invention should be included within the protection scope of this utility model. The technical scope of this utility model is not limited to the contents of the specification, but must be determined according to the scope of the claims.
Claims
1. A vapor chamber, characterized by: The application relates to a heat-conducting plate, which comprises a matched cover plate unit (1) and a bottom plate unit (2), the abutting edges of the two are flat and form a cavity (3) in the abutting edges after abutting, the edges of the cavity (3) are provided with >=1 liquid channels (4) communicating with the outside, a plurality of solid columnar heat-conducting support pieces (5) are arranged in the cavity (3), a powder ring (6) is sleeved on the periphery of part of the heat-conducting support pieces (5) or all of the heat-conducting support pieces (5), and the heat-conducting support pieces (5) are in advance connected with any one of the cover plate unit (1) and the bottom plate unit (2).
2. The vapor chamber of claim 1, wherein: The heat-conducting support pieces (5) are divided into two groups arranged on the inner and outer peripheries, the heat-conducting support pieces (5) arranged on the outer periphery surround the heat-conducting support pieces (5) arranged on the inner periphery, and the heat-conducting support pieces (5) arranged on the inner periphery are arranged in a rectangular lattice shape, and a powder ring (6) is sleeved on the outer periphery of each heat-conducting support piece (5).
3. The vapor chamber of claim 2, wherein: The edges of the cover plate unit (1) and the bottom plate unit (2) are provided with a clamping assembly (7) and a through hole (8), and the through hole (8) is located between the cavity (3) and the clamping assembly (7).
4. The vapor chamber of claim 3, wherein: The clamping assembly (7) comprises a clamping groove (7a) and a clamping protrusion (7b) in one-to-one correspondence.
5. A jig for preventing a shift of a uniform temperature plate internal support structure from a screen, characterized by: The application also discloses a jig for manufacturing the heat-conducting plate, which comprises a jig upper plate (9) and a jig lower plate (10), one side of the jig lower plate (10) is provided with a plurality of groups of recesses and protrusions, each group is of the same type and is provided with protrusions surrounding recesses.
6. The jig for preventing the internal support structure of a vapor chamber from being offset by the screen printing according to claim 5, characterized in that: The recesses are used for accommodating the heat-conducting support pieces (5), the positions of the recesses correspond to the heat-conducting support pieces (5); and the protrusions are used for sleeving the through holes (8), the positions of the protrusions correspond to the through holes (8).
7. The jig for preventing the internal support structure of the vapor chamber from being offset by the screen printing according to claim 6, characterized in that: The number of groups of the recesses and the protrusions is >=2.
8. The jig for preventing the internal support structure of the vapor chamber from being offset by the screen printing according to claim 7, characterized in that: The height of the protrusions is >= the thickness of the through holes (8).
9. The jig for preventing the internal support structure of a vapor chamber from being offset by the screen printing according to claim 5, characterized in that: The number of the jig upper plates (9) is 1, and the number of the jig lower plates (10) is >=1.