A device for testing heat dissipation performance in all directions

Abstract

The present application aims to provide a kind of all-around perception heat dissipation performance testing device of heating stability, reliable temperature measurement and can be tested to heat dissipation structure for multiple attitudes.The present application includes perception base and attitude perception test box, the perception base is provided with several sensors, each end surface of the attitude perception test box is provided with inductive sheet, several sensors and several inductive sheets are one-to-one corresponding cooperation, the product fixture, temperature measurement component and pressing assembly are arranged in the attitude perception test box, the temperature measurement component is arranged in the movable end of the pressing assembly, the pressing assembly drives the temperature measurement component to be close to the product fixture, and the temperature measurement component is tightly attached and applies a pressure to the product to be measured on the product fixture, the product fixture is provided with heating assembly matched with the product to be measured.The present application is applied to the technical field of testing device.

Description

Technical Field

[0001] This invention relates to the technical field of testing devices, and in particular to a comprehensive heat dissipation performance testing device. Background Technology

[0002] With the widespread use of electronic products in daily life, people are not only concerned about the types of electronic products, but also their performance. Electronic products generate more heat due to increased power consumption under high loads, which negatively impacts performance. Therefore, people are also concerned about the heat dissipation function of electronic products. During the manufacturing process, the heat dissipation performance of the heat dissipation structure is tested to ensure product quality. Current heat dissipation structure testing typically involves clamping the heat dissipation component of the electronic product in a fixture, applying a constant heat source, and measuring the temperature at multiple points on the heat dissipation component to determine the heat transfer efficiency of each part, thus judging whether the heat dissipation structure is qualified. The most commonly used heat dissipation component in electronic products is usually a vapor chamber, typically made of oxygen-free copper with a microstructured inner wall, filled with pure water as the working fluid. Currently, heat dissipation components are usually tested in a single placement method. However, the posture of electronic products during use is not uniform; therefore, a single placement method cannot fully reflect the performance of the heat dissipation component.

[0003] Furthermore, commonly used heat dissipation testing equipment typically employs power meters as the heat source. These instruments are expensive, bulky, and inconvenient to transport or operate. Temperature measurement components, on the other hand, use infrared thermometers, which also contribute to high costs and are not suitable for widespread adoption.

[0004] If a testing device that provides stable heating, reliable temperature measurement, and the ability to test the heat spreader in various orientations can be provided, the aforementioned technical problems can be well solved. Summary of the Invention

[0005] The technical problem to be solved by the present invention is to overcome the shortcomings of the prior art and provide a comprehensive sensing heat dissipation performance testing device that is stable in heating, reliable in temperature measurement, and capable of testing heat dissipation structures in various postures.

[0006] The technical solution adopted in this invention is as follows: This invention includes a sensing base and a orientation sensing test box. The sensing base is provided with a plurality of sensors, and each end face of the orientation sensing test box is provided with a sensing sheet. The plurality of sensors and the plurality of sensing sheets are respectively matched and cooperated. The orientation sensing test box is provided with a product fixture, a temperature measuring component, and a pressing component. The temperature measuring component is located at the movable end of the pressing component. The pressing component drives the temperature measuring component to approach the product fixture, and makes the temperature measuring component press against and apply pressure to the product to be tested on the product fixture. The product fixture is provided with a heating component that cooperates with the product to be tested.

[0007] As can be seen from the above scheme, the orientation sensing test box is used to load the test product and test structure, and then synchronously adjusts the placement posture of the product under test and the test structure. Several sensors on the sensing base acquire the posture of the orientation sensing test box, and then correspondingly control the pressing component to ensure that the product under test is limited under the same pressure conditions when tested in different orientations, ensuring the consistency of test conditions. The product fixture is used to limit the product under test, and the heating component heats the product under test, reducing losses and ensuring stable heating power. Simultaneously, the pressing component drives the temperature measuring component to press against the product under test, and the temperature measuring component detects the temperature of the product under test to obtain its thermal conductivity parameters, thereby detecting its heat dissipation performance. The temperature measuring component uses a thermocouple contact measurement method to ensure the accuracy of temperature acquisition.

[0008] In a preferred embodiment, the sensing base is provided with a limiting groove adapted to the orientation sensing test box, and a plurality of sensors are located in the limiting groove. When one end face of the orientation sensing test box mates with the limiting groove, the sensing sheet on that end face mates with the corresponding sensor and triggers it.

[0009] A further preferred embodiment is that the orientation sensing test box is a regular polyhedron, and the limiting groove is adapted to the end face of the orientation sensing test box.

[0010] In a preferred embodiment, the orientation sensing test box is provided with an installation frame, the installation frame is provided with a linear motion component, the product fixture is provided on the movable end of the linear motion component, and the linear motion component drives the product fixture to reciprocate between the loading position and the testing position.

[0011] In a preferred embodiment, the test fixture is provided with a product loading slot, and the heating assembly includes a heating element disposed on the product loading slot.

[0012] A further preferred embodiment is that the product loading slot is provided with a number of positioning pins and a number of vacuum adsorption holes. The positioning pins cooperate with the limiting skin of the product to be tested, and the vacuum adsorption holes are all connected to an external vacuum generator and a vacuum breaking valve. The product loading slot is also provided with an air blowing hole that cooperates with the heating element.

[0013] In a preferred embodiment, the pressing component includes several voice coil motors, and the temperature measuring component includes several T-type thermocouples correspondingly disposed at the moving ends of the several voice coil motors. The voice coil motors drive the T-type thermocouples to contact the product under test and apply pressure.

[0014] A further preferred embodiment is that the movable end of the voice coil motor is connected to the T-type thermocouple via a pressure sensor.

[0015] A preferred embodiment is that the orientation sensing test box is provided with a material inlet and outlet, and a shielding panel is detachably provided on the material inlet and outlet. Attached Figure Description

[0016] Figure 1 This is a three-dimensional structural schematic diagram of the present invention; Figure 2 This is an exploded structural diagram of the present invention; Figure 3 yes Figure 2 Enlarged view of section A; Figure 4 This is a three-dimensional structural diagram of the sensing base; Figure 5 This is a three-dimensional structural diagram of the orientation perception test box; Figure 6 This is a three-dimensional structural diagram of the mounting frame. Detailed Implementation

[0017] like Figures 1 to 6 As shown, in this embodiment, the present invention includes a sensing base 1 and a location sensing test chamber 2. The sensing base 1 is equipped with a plurality of sensors 3, and each end face of the location sensing test chamber 2 is equipped with a sensing element 4. The plurality of sensors 3 and the plurality of sensing elements 4 are correspondingly matched. The location sensing test chamber 2 contains a product fixture, a temperature measuring component, and a pressing component. The temperature measuring component is located at the movable end of the pressing component. The pressing component drives the temperature measuring component closer to the product fixture, causing the temperature measuring component to adhere tightly and apply pressure to the product to be tested on the product fixture. The product fixture is equipped with a heating component that cooperates with the product to be tested. The sensors 3 are proximity sensors.

[0018] like Figure 4As shown, the sensing base 1 is provided with a limiting groove 5, and the orientation sensing test box 2 is a regular polyhedron. The limiting groove 5 is adapted to the end face of the orientation sensing test box 2. By setting the limiting groove 5, the orientation sensing test box 2 is limited, ensuring that one end face of the orientation sensing test box 2 is parallel to the horizontal plane, thereby ensuring that the product under test in the product fixture maintains a corresponding angle with the horizontal plane. The sensing base 1 is provided with handles on both sides, and the bottom of the sensing base 1 is provided with several support feet.

[0019] like Figure 2 , Figure 4 and Figure 5 As shown, in this embodiment, the orientation sensing test box 2 is a regular hexahedron. Six sensors 3 are installed within the limiting groove 5, all staggered within the groove. When each end face of the orientation sensing test box 2 acts as its bottom surface and engages with the limiting groove 5, the sensing plate 4 on that end face corresponds to one and only one sensor 3 within the limiting groove 5, causing the sensor 3 to send a trigger signal to the host computer. The host computer then controls the pressing component based on the orientation and posture. The six sensors 3 correspond to six postures of the product under test, such as lying flat face-up, lying flat face-down, and rotating 90 degrees forward, backward, left, and right from the face-up position. In electronic products, the heat source is typically a power device such as a processor, which is then cooled by a heat spreader. The heating component is fixed in position within the product fixture to simulate the heat conduction relationship between the heat source and the product under test. The orientation sensing test box 2 simulates six postures to detect the heat dissipation performance of the product under test in different postures, thereby more comprehensively detecting the performance of the heat dissipation structure.

[0020] like Figure 2As shown, in this embodiment, a mounting frame 6 is fixedly installed inside the orientation sensing test box 2. A linear motion component 7 is installed on the mounting frame 6. The product fixture is installed on the movable end of the linear motion component 7. The linear motion component 7 drives the product fixture to reciprocate between the loading position and the testing position. A material inlet / outlet 10 is also provided on one end face of the orientation sensing test box 2. A shielding panel 11 is detachably installed on the material inlet / outlet 10. The material inlet / outlet 10 is located at the loading position and is used for loading and unloading the product to be tested. The shielding panel 11 is used to cover the material inlet / outlet 10 to avoid interference from external airflow. The mounting frame 6 provides support for the linear motion component 7 and the pressing component inside the orientation sensing test box 2. The linear motion component 7 is a linear cylinder. The product fixture slides within the mounting frame 6 via a linear slide rail. The linear motion component 7 drives the product fixture to reciprocate linearly along the linear slide rail. The mounting frame 6 is also equipped with two sets of photoelectric sensors that cooperate with the linear motion component 7. The two sets of photoelectric sensors are located at the initial position and the end position of the moving end of the linear motion component 7, respectively, and feed back the positioning signal to the host computer when the moving end of the linear motion component 7 moves.

[0021] like Figure 3 As shown, in this embodiment, a plurality of magnets 12 are provided on the material inlet / outlet 10, and the shielding panel 11 is magnetically attracted to the magnets 12. The material inlet / outlet 10 is shielded by magnetic attraction, allowing the shielding panel 11 to be quickly picked up and put down during loading and unloading, thus achieving convenient and quick loading and unloading operations.

[0022] In this embodiment, the test fixture is provided with a product loading slot, and the heating assembly includes a ceramic heating element disposed on the product loading slot. The product loading slot is provided with several positioning pins and several vacuum adsorption holes. The positioning pins engage with the product under test for positioning, and the vacuum adsorption holes are connected to an external vacuum generator and a vacuum breaking valve. An air blowing hole is also provided in the product loading slot to cooperate with the heating element. The product loading slot limits the position of the product under test, and the positioning pins precisely position it. During the test, the vacuum adsorption holes generate negative pressure to adsorb and fix the product under test, thus ensuring that the product under test remains stably held in the product loading slot even during posture changes. Simultaneously, by connecting the vacuum adsorption holes to the vacuum breaking valve, the product under test can be quickly unloaded after the test is completed by breaking the vacuum. The air blowing hole is connected to an external air supply mechanism via an air pipe to dissipate heat from the heating element after the test is completed.

[0023] like Figure 6As shown, in this embodiment, the pressing component includes several voice coil motors 8, and the temperature measuring component includes several T-type thermocouples 9 correspondingly disposed at the moving ends of the voice coil motors 8. The voice coil motors 8 drive the T-type thermocouples 9 to contact the product under test and apply pressure. High-precision pressure control is achieved through the voice coil motors 8, which, in conjunction with the sensing base 1, performs attitude sensing. Therefore, during different attitude tests, the voice coil motors 8 provide the same pressure to the product under test, ensuring that the pressure state of the product under test is the same during different attitude tests. Simultaneously, the T-type thermocouples 9 contact the product under test and collect its surface temperature data, thereby obtaining the heat dissipation performance parameters of the product under test.

[0024] like Figure 6 As shown, in this embodiment, the movable end of the voice coil motor 8 is connected to the T-type thermocouple 9 via a pressure sensor. The pressure sensor provides pressure feedback, enabling the voice coil motor 8 to be controlled and provide a stable pressure output, thereby ensuring that the pressure state of the product under test remains consistent during different posture tests.

[0025] Working principle of the invention: Before testing, the product to be tested is loaded through the material inlet / outlet 10. The product to be tested is fixed by pin positioning and vacuum negative pressure, and the product fixture loaded with the product to be tested is moved to the test position by the linear motion component 7.

[0026] The test angle is set via a host computer, and the operator places the orientation sensing test box 2 according to the set angle. The corresponding sensors 3 on the sensing base 1 detect the orientation. When the orientation sensing test box 2 is placed correctly, the corresponding sensing plates 4 on the orientation sensing test box 2 trigger the corresponding sensors 3. The host computer acquires the trigger status of several sensors 3 and determines whether it matches the set test angle. If they match, the test is started; otherwise, a warning is issued, and the operator makes corrections.

[0027] After the test is started, the host computer sets the pressure coefficient of the voice coil motor 8 according to the test angle, and controls the voice coil motor 8 to drive the T-type thermocouple 9 to contact the product under test and apply pressure, thereby keeping the pressure state of the product under test the same. Then, the heating component heats the product under test, and several T-type thermocouples 9 collect temperature data at different locations on the product under test and transmit it back to the host computer.

[0028] After the test is completed, the heating component is cooled.

[0029] If the test posture needs to be changed, the test angle is reset via the host computer, and the above test procedure is repeated.

[0030] Although the embodiments of the present invention are described with reference to actual solutions, they do not constitute a limitation on the meaning of the present invention. Modifications to the embodiments and combinations with other solutions based on this specification will be obvious to those skilled in the art.

Claims

1. A comprehensive heat dissipation performance testing device, characterized in that: It includes a sensing base (1) and a orientation sensing test box (2). The sensing base (1) is provided with a number of sensors (3). Each end face of the orientation sensing test box (2) is provided with a sensing plate (4). The number of sensors (3) and the number of sensing plates (4) are in one-to-one correspondence. The orientation sensing test box (2) is provided with a product fixture, a temperature measuring component and a pressing component. The temperature measuring component is located at the movable end of the pressing component. The pressing component drives the temperature measuring component to approach the product fixture and makes the temperature measuring component stick to and apply pressure to the product to be tested on the product fixture. The product fixture is provided with a heating component that cooperates with the product to be tested.

2. The all-around sensing heat dissipation performance testing device according to claim 1, characterized in that: The sensing base (1) is provided with a limiting groove (5) that is compatible with the orientation sensing test box (2). Several sensors (3) are located in the limiting groove (5). When one end face of the orientation sensing test box (2) is engaged with the limiting groove (5), the sensing sheet (4) on that end face engages with the corresponding sensor (3) and triggers.

3. The all-around sensing heat dissipation performance testing device according to claim 2, characterized in that: The orientation perception test box (2) is a regular polyhedron, and the limiting groove (5) is adapted to the end face of the orientation perception test box (2).

4. The all-around sensing heat dissipation performance testing device according to claim 1, characterized in that: The orientation perception test box (2) is equipped with an installation frame (6), and a linear motion component (7) is provided on the installation frame (6). The product fixture is located on the movable end of the linear motion component (7), and the linear motion component (7) drives the product fixture to reciprocate between the loading position and the testing position.

5. The all-around sensing heat dissipation performance testing device according to claim 1, characterized in that: The test fixture is provided with a product loading slot, and the heating component includes a heating element disposed on the product loading slot.

6. The all-around sensing heat dissipation performance testing device according to claim 5, characterized in that: The product loading slot is provided with a number of positioning pins and a number of vacuum adsorption holes. The positioning pins cooperate with the limiting skin of the product to be tested, and the vacuum adsorption holes are all connected to an external vacuum generator and a vacuum breaking valve. The product loading slot is also provided with an air blowing hole that cooperates with the heating element.

7. The all-around sensing heat dissipation performance testing device according to claim 1, characterized in that: The pressing component includes several voice coil motors (8), and the temperature measuring component includes several T-type thermocouples (9) correspondingly disposed at the moving ends of the several voice coil motors (8). The voice coil motors (8) drive the T-type thermocouples (9) to contact the product to be tested and apply pressure.

8. The all-around sensing heat dissipation performance testing device according to claim 7, characterized in that: The movable end of the voice coil motor (8) is connected to the T-type thermocouple (9) via a pressure sensor.

9. The all-around sensing heat dissipation performance testing device according to claim 1, characterized in that: The orientation perception test box (2) is provided with a material inlet and outlet (10), and a shielding panel (11) is detachably provided on the material inlet and outlet (10).

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