A water cooling performance testing device

Abstract

The utility model discloses a water -cooling performance testing arrangement, include: the carrier plate for bearing location product of measuring, relative first module and second module of setting in the carrier plate both sides to drive unit connected in first module and second module respectively, wherein, drive unit is used for urging first module and second module move to each other to make first module with second module clamping carrier product of measuring of bearing and first module and second module respectively with the surface contact of product of measuring and heat transfer temperature measurement. The utility model is used for making water -cooling board and product of measuring surface full contact, and uniform stress, promote the accuracy of test data, and can also realize multidirectional temperature measurement, improve test efficiency.

Description

Technical Field

[0001] This utility model relates to the field of heat dissipation element testing technology, and in particular to a water cooling performance testing device. Background Technology

[0002] With the continuous increase in power density of electronic devices, the performance of heat dissipation components directly determines whether chips can operate stably. Therefore, accurate and reliable testing of the water-cooling performance of heat dissipation components is crucial. Existing devices have incomplete contact with the product and uneven pressure distribution on the product surface, resulting in high and unstable contact thermal resistance, which seriously affects the accuracy and reliability of test data. Summary of the Invention

[0003] The purpose of this invention is to provide a water-cooling performance testing device that enables the water-cooled plate to fully contact the surface of the product under test and to be subjected to uniform force, and to achieve multi-directional temperature measurement, thereby improving testing efficiency.

[0004] The objective of this utility model is achieved through the following technical solution: A water-cooling performance testing device, comprising: Carrier plate, used to support and position the product to be tested; A first module and a second module are disposed opposite to each other on both sides of the carrier plate, and a drive unit is respectively connected to the first module and the second module; The driving unit is used to drive the first module and the second module to move towards each other, so that the first module and the second module clamp the carrier plate carrying the product under test, and the first module and the second module respectively contact and attach to the surface of the product under test for heat transfer and temperature measurement.

[0005] Preferably, the first module includes a water-cooled plate, which is provided with a fluid inlet and a fluid outlet communicating with an external cooling system, and a fluid pipe formed inside the water-cooled plate and communicating with the fluid inlet and the fluid outlet. The fluid pipe is formed by connecting multiple pipe segments, and the multiple pipe segments include the outer contour of the product to be tested in the projection area on the carrier plate.

[0006] Preferably, it also includes a frame, and the water-cooled plate includes a first plate and a second plate arranged opposite to each other, wherein the working surface of the first plate is a flat surface for bonding with the surface of the product to be tested; The driving unit includes a first driving component, and the mounting surface of the second plate is provided with a plurality of guide posts that are slidably connected to the frame. The first driving component drives the water-cooled plate to move along the direction of the guide posts.

[0007] Preferably, the second module includes a heating unit and a temperature measuring unit. The heating unit is mounted on the mounting base via an elastic element and is pressed against the surface of the product to be tested under the action of the driving unit. The temperature measuring unit includes several temperature measuring elements distributed around the heating unit and facing the surface of the product to be measured.

[0008] Preferably, the heating unit includes a heat-conducting substrate and at least one heating element disposed inside the heat-conducting substrate. The heat-conducting substrate includes a heating block, and the heating block is provided with a flat contact surface adapted to the surface of the product to be tested.

[0009] Preferably, there are multiple heating elements, and the multiple heating elements are arranged in an array within the heat-conducting substrate; And / or, the area of ​​the flat contact surface of the heating block is less than or equal to the area of ​​the surface of the product to be tested.

[0010] Preferably, the elastic element includes a support member connected to the heating unit, and an elastic body sleeved on the support member and located between the heating unit and the mounting base.

[0011] Preferably, the drive unit further includes a second drive component, the drive end of the second drive component is connected to the mounting base, and the second drive component is connected to the frame through a fixing bracket.

[0012] Preferably, the device further includes a flipping mechanism, which includes a rotating shaft connected to the frame and a manipulator for driving the rotating shaft to rotate, for changing the orientation of the frame and the product under test.

[0013] Preferably, the frame is further comprising a pair of side plates, one end of the rotating shaft is mounted on the side plate, and a bearing is provided between the rotating shaft and the side plate; the side plate is provided with an arc-shaped groove adapted to the operating member, and a plurality of positioning recesses are distributed on the arc-shaped groove; the operating member is rotated into one of the positioning recesses to fix the frame.

[0014] Compared with the prior art, the beneficial effects of this utility model include at least the following: The drive unit moves the first and second modules towards each other, clamping the product under test with uniform force and complete contact. This ensures that the heat and cold sources are precisely aligned with the designated test areas on the upper and lower surfaces of the product, improving testing efficiency and operational consistency. Simultaneously, a flipping mechanism allows for testing of the product under test from different angles on the carrier board, simulating its performance and limits under various scenarios, thus enhancing testing accuracy. Attached Figure Description

[0015] Figure 1This is a schematic diagram of the overall structure of an embodiment of the present utility model; Figure 2 This is a schematic diagram of the structure of the carrier board, the first module, the second module, and the drive unit according to an embodiment of the present invention; Figure 3 This is a schematic diagram of the working surface of the first plate and the simulated placement space structure of the test cavity of the frame and the carrier plate in an embodiment of this utility model. Figure 4 This is a schematic diagram of the second module structure of an embodiment of this utility model; Figure 5 This is a cross-sectional structural schematic diagram of the elastic element according to an embodiment of the present utility model; Figure 6 This is a schematic diagram of the fluid channel structure of the water-cooled plate in the first module of this utility model embodiment; Figure 7 This is a cross-sectional structural schematic diagram of the flipping mechanism according to an embodiment of the present utility model; Figure 8 This is a schematic diagram of the side plate structure according to an embodiment of the present utility model; In the diagram: 100, Carrier plate; 11, Simulated mounting space; 200, First module; 21, Water-cooled plate; 211, Fluid inlet; 212, Fluid outlet; 213, Interior of water-cooled plate; 214, Fluid pipe; 22, First plate; 221, Working surface; 23, Second plate; 231, Assembly surface; 24, Guide pillar; 300, Second module; 31, Heating unit; 311, Thermally conductive substrate; 312, Heating element; 313, Elastic element. ; 3131, Support component; 3132, Spring; 32, Temperature measuring unit; 321, Temperature measuring element; 33, Fixing frame; 34, Mounting base; 400, Drive unit; 41, First drive component; 42, Second drive component; 500, Frame; 51, Test cavity; 600, Tilting mechanism; 61, Side plate; 611, Arc groove; 6111, Positioning recess; 62, Operating component; 63, Bearing; 64, Rotating shaft; 65, Base plate. Detailed Implementation

[0016] Exemplary embodiments will now be described more fully with reference to the accompanying drawings. However, these exemplary embodiments can be implemented in many forms and should not be construed as limited to the embodiments set forth herein; rather, these embodiments are provided to make the present invention more comprehensive and complete, and to fully convey the concept of the exemplary embodiments to those skilled in the art. The same reference numerals in the drawings denote the same or similar structures, and therefore repeated descriptions of them will be omitted.

[0017] The terms used to describe position and direction in this utility model are illustrated with the accompanying drawings, but changes can be made as needed, and all such changes are included within the scope of protection of this utility model.

[0018] like Figures 1 to 8 As shown, this utility model provides a water-cooling performance testing device, mainly used for testing the heat dissipation performance of electronic products under test such as server motherboards, chips, and vapor chambers. The device mainly includes a carrier board 100, a frame 500, a first module 200, a second module 300, a drive unit 400, and a flipping mechanism 600.

[0019] Specifically, the frame 500 is welded from rigid aluminum profiles or steel structures, providing structural support for the entire device, and the interior of the frame 500 forms a test cavity 51.

[0020] like Figure 3 As shown, the carrier plate 100 is detachably mounted to the center of the test cavity 51 on the frame 500 via fasteners. A contour-matching positioning space 11 is provided in the center of the carrier plate 100, the shape of which matches the outer contour of the product under test, for precise support and positioning of the product. It is understood that by replacing the carrier plate 100 with different contour-matching positioning spaces 11, the device can be quickly adapted to different product models, demonstrating strong versatility.

[0021] Furthermore, the first module 200 is located above the carrier plate 100 and includes a water-cooled plate 21, such as Figure 6 As shown, the interior 213 of the water-cooled plate is machined with complex fluid channels 214. These channels consist of multiple U-shaped pipe segments connected end to end, forming a continuous, meandering flow path. This fluid channel connects to an external cooling system (e.g., a circulation system consisting of a chiller, water pump, and water tank, not shown in the figure) via fluid inlets 211 and outlets 212 located on the sidewalls or end faces of the water-cooled plate 21. The area covered by the orthographic projection of the fluid channels 214 (i.e., multiple pipe segments) onto the carrier plate 100 can encompass the outer contour of the product under test, ensuring uniform cooling performance across the entire product. Simultaneously, it covers the entire heat transfer area of ​​the product under test, avoiding localized hot spots and thus obtaining more accurate test data.

[0022] In addition, such as Figure 2As shown, the water-cooled plate 21 includes a first plate 22 and a second plate 23 arranged opposite to each other. The side of the first plate 22 facing the product under test is a working surface 221, which is precision machined into a smooth plane with high flatness to ensure a large-area close contact with the upper surface of the product under test. The back side of the second plate 23 is a mounting surface 231, on which four guide posts 24 are fixedly connected. These guide posts 24 are slidably engaged with linear bearings (not shown) fixed on the frame 500. Meanwhile, the drive unit 400 includes a first drive component 41, which is connected to the mounting surface 231. For example, it is a ball screw mechanism or cylinder driven by a servo motor. The cylinder body or motor body of the first drive component 41 is fixed on the frame 500, and its push rod or screw nut is connected to the second plate 23. Through the drive of the first drive component 41, the entire water-cooled plate 21 can be precisely controlled to move along the axial direction of the guide posts 24 to achieve automatic contact and separation with the product under test.

[0023] Furthermore, the second module 300 is located below the carrier plate 100, that is, the second module 300 and the first module 200 are disposed opposite each other on both sides of the carrier plate 100, such as... Figure 4 As shown, the second module 300 mainly includes a heating unit 31 and a temperature measuring unit 32. The heating unit 31 simulates the heating of the product under test. It includes a thermally conductive substrate 311 made of a highly thermally conductive material. At least one heating element 312, such as a heating rod, is embedded inside the thermally conductive substrate 311. Preferably, there are multiple heating elements 312, evenly distributed in an array inside the thermally conductive substrate 311 to achieve rapid and uniform heating. A heating block is provided on the surface of the thermally conductive substrate 311. The end face of the heating block is machined into a flat contact surface for pressing against the back of the product under test. The area of ​​this flat contact surface is less than or equal to the area of ​​the product under test to simulate concentrated heat flow and improve test accuracy.

[0024] The heating unit 31 is mounted on the mounting base 34 via an elastic element 313, specifically, as shown in the example below. Figure 5 As shown, the elastic component includes a support member 3131 connected to the heating unit 31, such as a guide rod or a shoulder screw, and an elastic body, such as a spring 3132, sleeved on the support member 3131. This elastic body is pre-compressed between the heating unit 31 and the mounting base 34. When the first module 200 and the second module 300 move towards each other to clamp the product under test, this elastic member 3132 provides stable contact pressure, maintains uniform contact pressure, and compensates for minor unevenness on different product surfaces, ensuring the stability and consistency of the contact thermal resistance between the heating unit 31 and the product under test.

[0025] The temperature measuring unit 32 includes several temperature measuring elements 321, such as thermocouples or resistance temperature sensors. These temperature measuring elements 321 are distributed around the heating unit 31 via the mounting base 34. Their probes face and reliably contact the surface of the product under test, and are used to monitor the temperature change distribution of multiple points of the product under test in real time.

[0026] The drive unit 400 is used to drive the first module 200 and the second module 300 to move towards each other to clamp the product under test. For the second module 300, the drive unit 400 includes a second drive element 42, such as a servo motor or a stepper motor. The second drive element 42 is connected to the frame 500 via a fixing bracket 33, and its drive end is connected to the mounting base 34, thereby driving the entire second module 300 to move towards or away from the carrier plate 100, that is, driving the heating block to fit tightly against the surface of the product under test or driving the heating block away from the product under test.

[0027] In some embodiments, such as Figure 1 and 7 As shown in Figure 8, the flipping mechanism 600 includes a pair of side plates 61, which are mounted on the base plate 65. The frame 500 is mounted between the two side plates 61 via a rotating shaft 64. One end of the rotating shaft 64 is fixedly connected to the frame 500, and the other end is mounted on the side plate 61. A bearing 63 is provided at the mating point between the rotating shaft 64 and the side plate 61 to ensure smooth rotation. An operating element 62, such as a manual crank, is connected to the rotating shaft 64. An arc-shaped groove 611 is formed on the side plate 61. The operating element 62 passes through the arc-shaped groove 611 and is connected to the rotating shaft 64. The arc-shaped groove 611 has multiple positioning recesses 6111. By rotating the operating element 62, the entire frame 500 and the internal testing device can be rotated around the rotating shaft 64. When rotated to the desired angle (e.g., 0°, 90°, 180°), the operating member 62 is engaged into the corresponding positioning recess 6111, which securely locks the frame 500 in that position, achieving precise positioning and locking of the angle, and enabling comprehensive evaluation of the data of the product under test in different positions.

[0028] Specifically, during testing, the product under test is first placed in the simulated placement space 11 of the carrier plate 100. The drive unit 400 is activated; the first drive component 41 drives the water-cooled plate 21 downwards, while the second drive component 42 drives the second module 300 upwards. The two components move towards each other until the product under test is stably clamped. In this state, the first plate 22 of the water-cooled plate 21 is in close contact with the upper surface of the product, and the flat contact surface of the heating unit 31 is in close contact with the lower surface of the product under the buffering effect of the spring 3132. The probes of multiple temperature sensing elements 321 also simultaneously contact the product. Subsequently, the external cooling system is activated, and the cooling medium flows into the water-cooled plate 21 from the fluid inlet 211 and out from the fluid outlet 212 through the fluid pipe 214. Simultaneously, the heating rod is energized to simulate heating. After reaching thermal steady state, parameters such as heating power, temperature at various points, coolant temperature difference, and flow rate are recorded, allowing the calculation of the product's thermal resistance and other performance indicators.

[0029] In the above steps, the heating unit 31 can be preheated to a certain temperature, and then the first module 200 and the second module 300 can be driven to move towards each other and clamp the product to be tested by the drive unit 400. Then, a cooling medium is introduced and the heating unit 31 is heated to the required simulated temperature to further improve the testing efficiency.

[0030] Although embodiments of the present invention have been shown and described above, it is understood that the above embodiments are exemplary and should not be construed as limiting the present invention. Those skilled in the art can make changes, modifications, substitutions and alterations to the above embodiments within the scope of the present invention without departing from the principles and spirit of the present invention, and all such changes should fall within the protection scope of the claims of the present invention.

Claims

1. A water-cooling performance testing device, characterized in that, include: Carrier plate, used to support and position the product to be tested; A first module and a second module are disposed opposite to each other on both sides of the carrier plate, and a drive unit is respectively connected to the first module and the second module; The driving unit is used to drive the first module and the second module to move towards each other, so that the first module and the second module clamp the carrier plate carrying the product under test, and the first module and the second module respectively contact and attach to the surface of the product under test for heat transfer and temperature measurement.

2. The water-cooling performance testing device according to claim 1, characterized in that, The first module includes a water-cooled plate, which is provided with a fluid inlet and a fluid outlet that communicate with an external cooling system, and a fluid pipe formed inside the water-cooled plate that communicates with the fluid inlet and the fluid outlet. The fluid pipe is formed by connecting multiple pipe segments, and the projection area of ​​the multiple pipe segments on the carrier plate includes the outer contour of the product to be tested.

3. The water-cooling performance testing device according to claim 2, characterized in that, It also includes a frame, and the water-cooled plate includes a first plate and a second plate arranged opposite to each other, wherein the working surface of the first plate is a flat surface for bonding with the surface of the product to be tested; The driving unit includes a first driving component, and the mounting surface of the second plate is provided with a plurality of guide posts that are slidably connected to the frame. The first driving component drives the water-cooled plate to move along the direction of the guide posts.

4. The water-cooling performance testing device according to claim 3, characterized in that, The second module includes a heating unit and a temperature measuring unit. The heating unit is mounted on the mounting base via an elastic element and is pressed against the surface of the product to be tested under the action of the driving unit. The temperature measuring unit includes several temperature measuring elements distributed around the heating unit and facing the surface of the product to be measured.

5. The water-cooling performance testing device according to claim 4, characterized in that, The heating unit includes a heat-conducting substrate and at least one heating element disposed inside the heat-conducting substrate. The heat-conducting substrate includes a heating block, which has a flat contact surface adapted to the surface of the product to be tested.

6. The water-cooling performance testing device according to claim 5, characterized in that, The heating element is a plurality of elements, and the plurality of heating elements are arranged in an array within the heat-conducting substrate; And / or, the area of ​​the flat contact surface of the heating block is less than or equal to the area of ​​the surface of the product to be tested.

7. The water-cooling performance testing device according to claim 4, characterized in that, The elastic element includes a support member connected to the heating unit, and an elastic body sleeved on the support member and located between the heating unit and the mounting base.

8. The water-cooling performance testing device according to claim 4, characterized in that, The drive unit further includes a second drive component, the drive end of which is connected to the mounting base, and the second drive component is connected to the frame via a fixing bracket.

9. The water-cooling performance testing device according to claim 3, characterized in that, It also includes a flipping mechanism, which includes a rotating shaft connected to the frame and a manipulator for driving the rotating shaft to rotate, for changing the orientation of the frame and the product under test.

10. The water-cooling performance testing device according to claim 9, characterized in that, It also includes a pair of side plates, the frame is disposed between the pair of side plates, one end of the rotating shaft is mounted on the side plate, and a bearing is disposed between the rotating shaft and the side plate; the side plate is provided with an arc-shaped groove adapted to the operating member, and multiple positioning recesses are distributed on the arc-shaped groove, the operating member is rotated into one of the positioning recesses to fix the frame.

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