Heat-conducting silicone grease testing device

Abstract

The utility model provides a heat-conducting silicone grease testing device which comprises a testing mechanism, the testing mechanism comprises a vibration table, and the vibration table is connected with a circuit testing board; an environment adjusting mechanism is arranged close to the testing mechanism, and the environment adjusting mechanism is used for adjusting environment parameters of the testing mechanism; the circuit test board is connected with a plurality of heat dissipation mechanisms placed in different modes, and the heat dissipation mechanisms are used for being attached to intelligent power modules coated with heat conduction silicone grease so as to test the heat conduction performance of the heat conduction silicone grease. According to the utility model, the heat-conducting performance of a plurality of heat-conducting silicone greases can be tested at one time in the same test environment, and the test efficiency is higher. The environment adjusting mechanism is used for adjusting environment parameters, such as temperature and humidity, of the environment where the testing mechanism is located, so that the testing working condition under the multi-factor coupling effect is changed, and the heat-conducting performance of a plurality of groups of heat-conducting silicone grease is tested in different testing environments.

Description

TECHNICAL FIELD

[0001] The utility model relates to the technical field of silicone grease testing, and particularly relates to a heat-conducting silicone grease testing device. BACKGROUND

[0002] As a key heat dissipation material, heat-conducting silicone grease will affect the service life of electronic components and the entire circuit test board. Usually, long-term high-temperature tests are used to evaluate the heat resistance of heat-conducting silicone grease, and the evaluation dimension is single. The running condition of an air conditioner is related to multiple influencing factors such as vibration, humidity, and temperature of the entire machine, and is the result of the joint action of multiple working conditions.

[0003] The existing testing equipment tests under a single thermal condition, cannot fully simulate the actual situation, is time-consuming and inaccurate in accelerating life testing, and lacks a multi-working-condition coupling device. In addition, the existing testing equipment cannot complete life testing of multiple heat-conducting silicone greases under the same test environment at one time.

[0004] Therefore, a testing device that can test the life of heat-conducting silicone grease under multiple influencing factors, complete life testing of multiple heat-conducting silicone greases at one time, has high testing efficiency, and is suitable for different test conditions is needed. SUMMARY

[0005] To overcome the problems in the related art, the purpose of the utility model is to provide a heat-conducting silicone grease testing device that can test the life of heat-conducting silicone grease under multiple influencing factors, complete life testing of multiple heat-conducting silicone greases at one time, has high testing efficiency, and is suitable for different test conditions.

[0006] A heat-conducting silicone grease testing device includes a testing mechanism, the testing mechanism includes a vibration table, and the vibration table is connected with a circuit test board; an environment adjusting mechanism is arranged close to the testing mechanism, the environment adjusting mechanism is used for adjusting the environmental parameters of the testing mechanism; the circuit test board is connected with a plurality of heat dissipation mechanisms that differ in placement mode, and the heat dissipation mechanisms are used for being attached to intelligent power modules coated with heat-conducting silicone grease to test the heat conduction performance of the heat-conducting silicone grease.

[0007] In the preferred technical scheme of the utility model, the environment adjusting mechanism includes a temperature control mechanism, the temperature control mechanism includes a temperature controller, the temperature controller is connected with a heater and a heat dissipation fan, and the temperature controller is used for controlling the power of the heater and the heat dissipation fan according to the temperature of the circuit test board.

[0008] In the preferred technical scheme of the utility model, the environment adjusting mechanism includes a humidifying mechanism, and the humidifying mechanism is arranged at the side of the testing mechanism; the humidifying mechanism includes an evaporator, and the evaporator is connected with a water tank and a humidifying fan at both sides.

[0009] In the preferable technical scheme of the utility model, the heat dissipation mechanism includes first radiator, second radiator and third radiator, the height of first radiator is greater than the height of second radiator, the height of second radiator is greater than the height of third radiator.

[0010] In the preferable technical scheme of the utility model, the vibration table is connected with two-dimensional displacement table on the side away from the circuit test board, the two-dimensional displacement table is connected with rotary workbench on the side away from the circuit test board, the two-dimensional displacement table is used to drive the circuit test board to move in X direction and Y direction, and the rotary workbench is used to drive the two-dimensional displacement table to rotate.

[0011] In the preferable technical scheme of the utility model, the vibration table is connected with two-dimensional displacement table on the side away from the circuit test board, the two-dimensional displacement table is connected with rotary workbench on the side away from the circuit test board, the two-dimensional displacement table is used to drive the circuit test board to move in X direction and Y direction, and the rotary workbench is used to drive the two-dimensional displacement table to rotate.

[0012] In the preferable technical scheme of the utility model, the humidification mechanism further includes motor and humidity controller, the humidity controller is used to regulate the rotating speed of motor, and the motor is connected with water tank.

[0013] In the preferable technical scheme of the utility model, the heat-conducting silicone grease testing device further includes box body, the box body includes first sealed cavity and second sealed cavity, the first sealed cavity is located above the second sealed cavity, the testing mechanism and the humidification mechanism are arranged in the first sealed cavity, and the temperature control mechanism is arranged in the second sealed cavity.

[0014] In the preferable technical scheme of the utility model, the first sealed cavity and the second sealed cavity are provided with partition plate, and the partition plate is used to isolate the first sealed cavity and the second sealed cavity.

[0015] In the preferable technical scheme of the utility model, the partition plate is further provided with heat exchange hole, and the heat exchange hole is communicated with the first sealed cavity and the second sealed cavity.

[0016] The present invention has the following beneficial effects: It provides a thermal grease testing device, comprising a testing mechanism, the testing mechanism including a vibration table, the vibration table being connected to a circuit test board; an environmental adjustment mechanism disposed adjacent to the testing mechanism, the environmental adjustment mechanism being configured to adjust environmental parameters of the testing mechanism; and a plurality of heat dissipation mechanisms disposed in different manners connected to the circuit test board, the heat dissipation mechanisms being configured to be attached to an intelligent power module coated with thermal grease to test the thermal conductivity of the thermal grease. The heat dissipation mechanisms are disposed in different manners, and the plurality of heat dissipation mechanisms are disposed on the circuit test board, and the intelligent power module coated with thermal grease is attached to all of the heat dissipation mechanisms. This allows the thermal conductivity of multiple thermal greases to be tested simultaneously under the same test environment, resulting in high testing efficiency. The environmental adjustment mechanism is used to adjust environmental parameters of the testing mechanism, such as temperature and humidity, thereby varying the test conditions under the influence of multiple factors. While ensuring that multiple thermal greases are in the same test environment, comparative tests can be conducted. Furthermore, the test environment can be adjusted to test the thermal conductivity of multiple groups of thermal greases under different test environments. BRIEF DESCRIPTION OF THE DRAWINGS

[0017] Figure 1 This is a schematic structural diagram of a thermal grease testing device of the present invention;

[0018] Figure 2 It is a structural schematic diagram of a test mechanism provided on a partition of the utility model;

[0019] Figure 3 It is a structural schematic diagram of the heat dissipation mechanism of the utility model;

[0020] Figure 4 It is a structural diagram of the vibration table of the utility model;

[0021] Figure 5 It is a structural diagram of the temperature control mechanism of the utility model;

[0022] Figure 6 It is a side view of the temperature control mechanism of the present utility model;

[0023] Figure 7 It is a structural diagram of the humidifying mechanism of the present utility model.

[0024] Figure numerals: 1. test mechanism; 2. vibration table; 3. circuit test board; 4. environmental adjustment mechanism; 5. heat dissipation mechanism; 6. temperature control mechanism; 7. temperature controller; 8. heater; 9. heat dissipation fan; 10. humidification mechanism; 11. evaporator; 12. water tank; 13. humidification fan; 14. first radiator; 15. second radiator; 16. third radiator; 17. two-dimensional displacement table; 18. rotary workbench; 19. quick clamp; 20. motor; 21. humidity controller; 22. box; 23. first sealed cavity; 24. second sealed cavity; 25. partition; 26. heat exchange hole; 27. soft film; 28. moving coil; 29. ​​temperature display; 30. fastening switch. DETAILED DESCRIPTION

[0025] The following describes preferred embodiments of the present invention in more detail with reference to the accompanying drawings. Although preferred embodiments of the present invention are shown in the accompanying drawings, it should be understood that the present invention can be implemented in various forms and should not be limited by the embodiments described herein. Rather, these embodiments are provided to make the present invention more thorough and complete, and to fully convey the scope of the present invention to those skilled in the art.

[0026] Example 1

[0027] like Figures 1-3 As shown, this embodiment provides a thermal grease testing device, including a testing mechanism 1, wherein the testing mechanism 1 includes a vibration table 2, and a circuit testing board 3 is connected to the vibration table 2; an environmental adjustment mechanism 4 is arranged near the testing mechanism 1, and the environmental adjustment mechanism 4 is used to adjust the environmental parameters of the testing mechanism 1; the circuit testing board 3 is connected to a plurality of heat dissipation mechanisms 5 with different placement methods, and the heat dissipation mechanisms 5 are used to fit with an intelligent power module coated with thermal grease to test the thermal conductivity of the thermal grease.

[0028] The circuit test board 3 is equipped with several heat sinks 5, several intelligent power modules, and an LED alarm. The heat sinks 5 are screwed to the intelligent power modules, which are coated with thermal grease. Different heat sinks 5 are placed at different locations and heights. Using the circuit test board 3, the thermal conductivity of the thermal grease on several intelligent power modules can be tested simultaneously.

[0029] The environment regulating mechanism 4 can regulate the temperature and humidity of the environment where the testing mechanism 1 is located to adjust the testing environment, test the thermal conductivity of the thermal grease under different testing environments, and detect whether the thermal grease is ineffective.

[0030] like Figure 4As shown, the circuit test board 3 is connected with a driving device, the vibration table 2 is located between the test mechanism 1 and the driving device, and the vibration table 2 is used to provide a vibration environment for the test. The vibration table 2 comprises a moving coil 28 and a soft film 27, the moving coil 28 of the vibration table 2 is located at the upper part of the vibration table 2, and the moving coil 28 is used for fixed installation of the vibration component. The soft film 27 is located at the upper part of the moving coil 28, and the soft film 27 is used to realize the sealing and thermal isolation between the vibration table 2 and the test mechanism 1.

[0031] The test mechanism 1 is unidirectionally connected with a communication module, and the communication module is bidirectionally connected with a PC end. The test mechanism 1 further comprises a data collector, which sends the position of the circuit test board 3, the temperature of the circuit test board 3 and the environmental humidity to the PC end through the communication module. The environmental adjusting mechanism 4 is used to adjust the temperature and the environmental humidity of the circuit test board 3, and after the adjustment is completed, the vibration table 2 is started, and whether the heat-conducting silicone grease is invalid is judged through the interface module and the indicator light of the circuit test board 3. The environmental temperature refers to the temperature in the space where the circuit test board 3 is located, and generally the temperature of the circuit test board 3 is greater than or equal to the environmental temperature. The environmental humidity refers to the humidity in the space where the circuit test board 3 is located.

[0032] The embodiment provides a heat-conducting silicone grease testing device, which comprises a test mechanism 1, the test mechanism 1 comprises a vibration table 2, and the vibration table 2 is connected with a circuit test board 3; an environmental adjusting mechanism 4 is arranged close to the test mechanism 1, and the environmental adjusting mechanism 4 is used to adjust the environmental parameters of the test mechanism 1; the circuit test board 3 is connected with a plurality of heat dissipation mechanisms 5 which are different in placement mode, and the heat dissipation mechanisms 5 are used to be attached to the intelligent power module coated with the heat-conducting silicone grease, so as to test the heat-conducting performance of the heat-conducting silicone grease. The placement modes of the different heat dissipation mechanisms 5 are different, a plurality of heat dissipation mechanisms 5 are placed on the circuit test board 3, the intelligent power module coated with the heat-conducting silicone grease is attached to all the heat dissipation mechanisms 5, the heat-conducting performance of a plurality of heat-conducting silicone greases can be tested at the same time under the same test environment, and the test efficiency is high. The environmental adjusting mechanism 4 is used to adjust the environmental parameters such as the temperature and the humidity of the environment where the test mechanism 1 is located, so as to change the test working condition under the coupling of multiple factors. In the case that the plurality of heat-conducting silicone greases are in the same test environment, comparative tests are conducted, the test environment can be adjusted, and the heat-conducting performance of a plurality of groups of heat-conducting silicone greases can be tested under different test environments.

[0033] Embodiment 2

[0034] As Figures 1-3As shown, the embodiment provides a heat-conducting silicone grease testing device, which comprises a testing mechanism 1, the testing mechanism 1 comprises a vibration table 2, and a circuit test board 3 is connected to the vibration table 2; an environment adjusting mechanism 4 is arranged close to the testing mechanism 1, and the environment adjusting mechanism 4 is used for adjusting the environmental parameters of the testing mechanism 1; a plurality of heat dissipation mechanisms 5 with different placement modes are connected to the circuit test board 3, and the heat dissipation mechanisms 5 are used for being attached to the intelligent power module coated with the heat-conducting silicone grease to test the heat-conducting performance of the heat-conducting silicone grease.

[0035] As shown in Figure 1 , Figure 5 and Figure 6 , the environment adjusting mechanism 4 comprises a temperature control mechanism 6, the temperature control mechanism 6 comprises a temperature controller 7, the temperature controller 7 is connected with a heater 8 and a heat dissipation fan 9, and the temperature controller 7 is used for controlling the power of the heater 8 and the heat dissipation fan 9 according to the temperature of the circuit test board 3.

[0036] The temperature control mechanism 6 further comprises a temperature sensor, and the embodiment takes a thermocouple as an example. The temperature sensor is electrically connected with the input end of the temperature controller 7, and the output end of the temperature controller 7 is electrically connected with the heater 8. The sensing end of the temperature sensor is electrically connected with the circuit test board 3, and the temperature sensor is used for acquiring the temperature of the circuit test board 3 in real time. After the temperature controller 7 receives the temperature of the circuit test board 3 sent by the temperature sensor, the temperature display meter is controlled to display the temperature of the circuit test board 3. The testing mechanism 1 is located in a first sealed cavity 23 of a box 22, and the temperature control mechanism 6 is arranged in a second sealed cavity 24, and the first sealed cavity 23 is located above the second sealed cavity 24.

[0037] The temperature controller 7 opens or closes the heater 8 according to the set temperature, and heat insulation cotton is arranged between the box 22 and the temperature control mechanism 6, which reduces the heat transfer and heat loss.

[0038] A driving mechanism is further arranged in the box 22 and connected with the testing mechanism 1. The temperature sensor acquires the temperature of the circuit test board 3, the temperature controller 7 compares the temperature of the circuit test board 3 with the set temperature, and according to the difference between the temperature of the circuit test board 3 and the set temperature, the driving mechanism is used to adjust the position of the testing mechanism 1 until the heat dissipation mechanism 5 and the intelligent power module coated with the heat-conducting silicone grease are adjusted to the optimal heat dissipation position.

[0039] The environmental adjustment mechanism 4 of this embodiment includes a temperature control mechanism 6, which includes a temperature controller 7. The temperature controller 7 is connected to a heater 8 and a heat dissipation fan 9. The temperature controller 7 is used to control the power of the heater 8 and the heat dissipation fan 9 according to the temperature of the circuit test board 3. A temperature sensor is used to detect the temperature of the circuit test board 3 in real time. Based on the difference between the temperature of the circuit test board 3 and the set temperature, the heater 8 is turned on or off. When the heater 8 is in operation, the power of the heater 8 is adjusted. The test mechanism 1 is connected to a drive mechanism, which is used to adjust the position of the test mechanism 1 until the heat dissipation mechanism 5 and the intelligent power module coated with thermal grease are adjusted to the optimal heat dissipation position.

[0040] Example 3

[0041] like Figures 1-3 As shown, this embodiment provides a thermal grease testing device, including a testing mechanism 1, wherein the testing mechanism 1 includes a vibration table 2, and a circuit testing board 3 is connected to the vibration table 2; an environmental adjustment mechanism 4 is arranged near the testing mechanism 1, and the environmental adjustment mechanism 4 is used to adjust the environmental parameters of the testing mechanism 1; the circuit testing board 3 is connected to a plurality of heat dissipation mechanisms 5 with different placement methods, and the heat dissipation mechanisms 5 are used to fit with an intelligent power module coated with thermal grease to test the thermal conductivity of the thermal grease.

[0042] like Figure 7 As shown, the environment adjustment mechanism 4 includes a humidifying mechanism 10, which is arranged on the side of the testing mechanism 1; the humidifying mechanism 10 includes an evaporator 11, and the two sides of the evaporator 11 are respectively connected to a water tank 12 and a humidifying fan 13.

[0043] The humidifying mechanism 10 further includes a motor 20 and a humidity controller 21 . The humidity controller 21 is used to adjust the rotation speed of the motor 20 . The motor 20 is connected to the water tank 12 .

[0044] A humidifying fan 13 is connected to the top of the evaporator 11. The evaporator 11 and the humidifying fan 13 are connected by gluing, and can also be connected and fixed by other means, which are not limited here. A water tank 12 and a motor 20 are connected to the bottom of the evaporator 11. The evaporator 11 and the water tank 12 are bolted together, and the motor 20 is connected to the water tank 12. The humidity controller 21 and the evaporator 11 are both arranged on the top of the water tank 12. The humidity controller 21 is arranged close to the evaporator 11 and is bolted to the evaporator 11. Preferably, the humidifying mechanism 10 also includes a humidity sensor, the input end of the humidity sensor is electrically connected to the testing mechanism 1, and the output end of the humidity sensor is electrically connected to the humidity controller 21.

[0045] When the humidification mechanism 10 is in operation, the motor 20 is started, and the motor 20 drives the evaporator 11. After the evaporator 11 is started, the liquid water in the water tank 12 is converted into water mist, and at the same time, the motor 20 drives the humidification fan 13 to rotate, and the humidification fan 13 makes the water mist uniformly spread out, so as to adjust the humidity in the space where the test mechanism 1 is located. The humidity controller 21 can control the rotating speed of the motor 20. When the humidity controller 21 controls the rotating speed of the motor 20 to increase, the motor 20 drives the evaporator 11 to generate more water mist, and at the same time, the rotating speed of the humidification fan 13 is increased synchronously due to the increase of the rotating speed of the motor 20, so that the speed of the water mist diffusion is accelerated, thereby increasing the environmental humidity of the environment where the test mechanism 1 is located more quickly. When the humidity controller 21 controls the rotating speed of the motor 20 to decrease, the speed of the water mist generated by the motor 20 driving the evaporator 11 is reduced, and at the same time, the rotating speed of the humidification fan 13 is reduced synchronously due to the decrease of the rotating speed of the motor 20, so that the speed of the water mist diffusion is reduced, thereby reducing the humidity in the air.

[0046] The environmental adjustment mechanism 4 of the embodiment includes a humidification mechanism 10 arranged at the side of the test mechanism 1; the humidification mechanism 10 includes an evaporator 11, and the evaporator 11 is connected with a water tank 12 and a humidification fan 13 on both sides. The humidification mechanism 10 is used to adjust the environmental humidity of the environment where the test mechanism 1 is located, so as to test the heat conduction performance of the heat-conducting silicone grease under different environmental humidity.

[0047] Embodiment 4

[0048] As shown in Figures 1-3 , the embodiment provides a heat-conducting silicone grease testing device, which includes a test mechanism 1, the test mechanism 1 includes a vibration table 2, and the vibration table 2 is connected with a circuit test board 3; an environmental adjustment mechanism 4 is arranged close to the test mechanism 1, and the environmental adjustment mechanism 4 is used to adjust the environmental parameters of the test mechanism 1; the circuit test board 3 is connected with a plurality of heat dissipation mechanisms 5 which are different in placement mode, and the heat dissipation mechanisms 5 are used to be attached to the intelligent power module coated with heat-conducting silicone grease, so as to test the heat conduction performance of the heat-conducting silicone grease.

[0049] As shown in Figure 3 , the heat dissipation mechanism 5 includes a first heat sink 14, a second heat sink 15 and a third heat sink 16, the height of the first heat sink 14 is greater than the height of the second heat sink 15, and the height of the second heat sink 15 is greater than the height of the third heat sink 16.

[0050] As shown in Figure 2As shown, the vibration table 2 is connected with a two-dimensional displacement table 17 away from one side of the circuit test board 3, the two-dimensional displacement table 17 is connected with a rotary workbench 18 away from one side of the circuit test board 3, the two-dimensional displacement table 17 is used to drive the circuit test board 3 to move in X direction and Y direction, and the rotary workbench 18 is used to drive the two-dimensional displacement table 17 to rotate.

[0051] The vibration table 2 is provided with a quick clamp 19 close to the circuit test board 3, and the quick clamp 19 is used to clamp the circuit test board 3.

[0052] The first heat sink 14, the second heat sink 15 and the third heat sink 16 are all arranged on the circuit test board 3, the second heat sink 15 is arranged close to the first heat sink 14, and the third heat sink 16 is arranged close to the second heat sink 15. After the heat-conducting silicone grease is coated on the surface of the intelligent power module, the three intelligent power modules are respectively attached to the first heat sink 14, the second heat sink 15 and the third heat sink 16, and the heat-conducting performance of the heat-conducting silicone grease on the intelligent power module is tested.

[0053] The circuit test board 3 is also provided with an LED alarm, when the intelligent power module fails, the LED alarm displays a red light and emits an alarm prompt sound. The number of the LED alarm is the same as the number of the intelligent power module, when the first heat sink 14, the second heat sink 15 and the third heat sink 16 are arranged, three LED alarms are arranged, and each LED alarm corresponds to one heat sink.

[0054] As shown in the figure, Figures 1-4 The vibration table 2 is located between the test mechanism 1 and the two-dimensional displacement table 17, and the vibration table 2 is used to provide a vibration environment for the experiment. The vibration table 2 includes a soft film 27 and a moving coil 28, the moving coil 28 is located at the upper part of the vibration table 2, and the moving coil 28 is used to fix the vibration component. The soft film 27 is located at the upper part of the moving coil 28, and the soft film 27 is used to realize the sealing and thermal isolation between the vibration table 2 and the test mechanism 1, and the two-dimensional coupling of the vibration environment and the temperature environment is realized through the connection of the soft film 27.

[0055] The rotary table 18 rotates to drive the two-dimensional displacement table 17 and the circuit test board 3 to rotate. The two-dimensional displacement table 17 drives the circuit test board 3 to move in the X direction and the Y direction. There are three ways to adjust the position of the circuit test board 3 in the three-dimensional space. The first way is to first use the rotary table 18 to drive the circuit test board 3 to rotate, and then use the two-dimensional displacement table 17 to adjust the position of the circuit test board 3 in the X direction and the Y direction. The second way is to first use the two-dimensional displacement table 17 to adjust the position of the circuit test board 3 in the X direction and the Y direction, and then use the rotary table 18 to drive the circuit test board 3 to rotate. The third way is to simultaneously use the rotary table 18 and the two-dimensional displacement table 17 to adjust the angle of the circuit test board 3, the position of the circuit test board 3 in the X direction, and the position of the circuit test board 3 in the Y direction. By combining the rotary table 18 and the two-dimensional displacement table 17, the thermal conductivity of the thermal conductive silicone grease can be tested at different positions in the three-dimensional space.

[0056] The side of the vibration table 2 away from the two-dimensional displacement table 17 is provided with a quick clamp 19, and the quick clamp 19 includes a clamping part for clamping the circuit test board 3, which facilitates the installation and removal of the circuit test board 3. The placement state and pressure state of the to-be-tested board can be determined through the quick clamp 19, so as to ensure the clamping stability of the circuit test board 3 during the test.

[0057] As shown in Figure 2 The side of the rotary table 18 away from the two-dimensional displacement table 17 is provided with a partition plate 25, and the rotary table 18 is detachably connected with the partition plate 25. The side of the rotary table 18 is provided with a fastening switch 30. By tightening the fastening switch 30, the rotary table 18 can be fixed on the partition plate 25. By loosening the fastening switch 30, the rotary table 18 can be detached from the partition plate 25.

[0058] Preferably, the contact surface of the vibration table 2 and the two-dimensional displacement table 17 is provided with a plurality of vibration absorbers, which can reduce the vibration transmitted from the vibration table 2 to the two-dimensional displacement table 17.

[0059] The side of the vibration table 2 away from the circuit test board 3 is connected with the two-dimensional displacement table 17, the side of the two-dimensional displacement table 17 away from the circuit test board 3 is connected with the rotary table 18, the two-dimensional displacement table 17 is used to drive the circuit test board 3 to move in the X direction and the Y direction, and the rotary table 18 is used to drive the two-dimensional displacement table 17 to rotate. By combining the rotary table 18 and the two-dimensional displacement table 17, the thermal conductivity of the thermal conductive silicone grease can be tested at different positions in the three-dimensional space.

[0060] Example 5

[0061] As shown in Figures 1-3As shown in the drawings, the embodiment provides a heat-conducting silicone grease testing device, which comprises a testing mechanism 1, the testing mechanism 1 comprises a vibration table 2, and a circuit testing board 3 is connected to the vibration table 2; an environmental adjustment mechanism 4 is arranged close to the testing mechanism 1, the environmental adjustment mechanism 4 is used for adjusting the environmental parameters of the testing mechanism 1; a plurality of heat dissipation mechanisms 5 with different placement modes are connected to the circuit testing board 3, and the heat dissipation mechanisms 5 are used for being attached to intelligent power modules coated with heat-conducting silicone grease, so as to test the heat-conducting performance of the heat-conducting silicone grease.

[0062] As shown in the drawings, Figure 1 , Figure 5 and Figure 6 , the environmental adjustment mechanism 4 comprises a temperature control mechanism 6, the temperature control mechanism 6 comprises a temperature controller 7, the temperature controller 7 is connected with a heater 8 and a heat dissipation fan 9, and the temperature controller 7 is used for controlling the power of the heater 8 and the heat dissipation fan 9 according to the temperature of the circuit testing board 3.

[0063] As shown in the drawings, Figure 7 , the environmental adjustment mechanism 4 comprises a humidification mechanism 10, the humidification mechanism 10 is arranged at the side of the testing mechanism 1; the humidification mechanism 10 comprises an evaporator 11, and a water tank 12 and a humidification fan 13 are connected to the two sides of the evaporator 11 respectively.

[0064] Optionally, the evaporator 11 is replaced by an atomizer, and a motor 20 drives the atomizer to disperse the water in the water tank 12, so that more water mist can be generated by using the atomizer, and the humidity of the air is improved.

[0065] As shown in the drawings, Figure 1 and Figure 5 , the heat-conducting silicone grease testing device further comprises a box body 22, the box body 22 comprises a first sealed cavity 23 and a second sealed cavity 24, the first sealed cavity 23 is located above the second sealed cavity 24, the testing mechanism 1 and the humidification mechanism 10 are arranged in the first sealed cavity 23, and the temperature control mechanism 6 is arranged in the second sealed cavity 24.

[0066] The box body 22 is divided into two sealed cavities, the testing mechanism 1 and the temperature control mechanism 6 are arranged in two different sealed cavities respectively, the testing mechanism 1 and the temperature control mechanism 6 are isolated from each other, the vibration table 2, the temperature control mechanism 6 and the humidification mechanism 10 maintain a certain coupling degree in the case of being independent of each other, heat loss can be effectively reduced, and energy saving and environmental protection are achieved.

[0067] A removable partition 25 is located in the center of the chamber 22. Above the partition 25 is the first sealed chamber 23, and below the partition 25 is the second sealed chamber 24. Heat exchange holes 26 are provided in the partition 25, through which airflow is exchanged. The partition 25 is made of a transparent material, allowing operators to observe the testing status of the thermally conductive grease inside the chamber 22. The temperature control mechanism 6 is bolted to the partition 25, and the humidification mechanism 10 is also bolted to the partition 25.

[0068] A first sealed door is provided on the side wall of the box body 22. The first sealed door is used to open and close the first sealed cavity 23. The first sealed door is hinged to the side wall of the box body 22 above the partition 25. Pushing the first sealed door inward closes the first sealed cavity 23; pulling the first sealed door outward opens the first sealed cavity 23.

[0069] The side wall of the box body 22 is also provided with a second sealing door, which is used to open and close the second sealing cavity 24. The second sealing door is hinged to the bottom of the box body 22. The second sealing cavity 24 can be closed by pushing the second sealing door upward; the second sealing cavity 24 can be opened by pulling the second sealing door downward.

[0070] The first and second sealing doors are both equipped with rubber sealing strips where they contact the housing 22. These strips prevent heat loss and reduce energy waste. The first sealing door is attached to the housing 22 using a magnet. Pressing the first sealing door releases it from the housing 22. A spring-loaded buckle locks the second sealing door to the housing 22. Pressing the buckle releases it.

[0071] like Figure 2 As shown, the operating temperature range of the electronic components within the box 22 is 40-60°C. During operation, multiple temperature sensors positioned around the test mechanism 1 provide feedback on the temperature at the current test location. The two-dimensional translation stage 17 drives the test mechanism 1 in translation, while the rotary table 18 drives the test mechanism 1 in rotation. During the thermal grease testing process, the temperature at the current test location fluctuates, so the temperature sensors continuously provide feedback on the current test location, allowing the two-dimensional translation stage 17 and rotary table 18 to continuously adjust the position of the test mechanism 1.

[0072] The temperature sensor collects the temperature of circuit test board 3 and sends it to the data collector. The humidity sensor also collects the ambient humidity and sends it to the data collector. The data collector then sends the temperature and humidity of circuit test board 3 to the PC. The PC controls two-dimensional translation stage 17 and rotary table 18 to adjust the position of test mechanism 1. After adjusting the position of test mechanism 1, vibration table 2 is turned on, and the interface module and indicator light determine whether the thermal grease has failed.

[0073] The heat-conducting silicone grease testing device of the embodiment further comprises a box 22, the box 22 comprises a first sealed cavity 23 and a second sealed cavity 24, the first sealed cavity 23 is located above the second sealed cavity 24, the testing mechanism 1 and the humidifying mechanism 10 are arranged in the first sealed cavity 23, and the temperature control mechanism 6 is arranged in the second sealed cavity 24. The box 22 is divided into two sealed cavities, the testing mechanism 1 and the temperature control mechanism 6 are arranged in two different sealed cavities respectively, the testing mechanism 1 and the temperature control mechanism 6 are isolated from each other, the vibration table 2, the temperature control mechanism 6 and the humidifying mechanism 10 are coupled in a mutually independent manner, heat loss can be effectively reduced, and energy saving and environmental protection are achieved.

[0074] The relative arrangement of parts and steps, numerical expressions, and numerical values set forth in the embodiments are not intended to limit the scope of the present application unless otherwise specifically stated. In all of the examples shown and discussed herein, any particular value is to be interpreted as merely an example, and not as a limitation. Thus, other examples of exemplary embodiments can have different values. It is noted that like numbers and letters refer to like items throughout the several views of the drawings, and therefore, once an item is defined in one view, it need not be discussed further in subsequent views.

[0075] It is to be understood that the spatially relative terms are intended to encompass different orientations of the device in use or operation in addition to the orientations depicted in the figures. For example, if a device in the figures is inverted, then a dependent portion described as above other portions or elements is then oriented to be below other portions or elements. Thus, the exemplary term "above" can encompass both an orientation of above and below. The device can be otherwise oriented (rotated 90 degrees or at other orientations) and the spatially relative descriptors used herein interpreted accordingly. The terms "upstream" and "downstream" are used to designate positions in a flow path of a fluid, such as a gas or a liquid, in which the upstream position is located in the flow path before the downstream position.

[0076] In addition, it should be noted that the use of "first", "second", and the like words of similar meaning used in the description are employed for convenience, and do not limit the scope of the application, unless otherwise specifically stated, and are therefore not to be interpreted in a way that would impose a specific meaning to the application.

[0077] The above only describes preferred embodiments of the present application and is not intended to limit the present application. For those skilled in the art, the present application can have various modifications and changes. Any modification, equivalent replacement, improvement, etc. made within the spirit and principle of the present application shall be included in the protection scope of the present application.

Claims

1. A heat conductive silicone grease testing device, characterized by, The test mechanism comprises a vibration table to which a circuit test board is connected; an environment adjusting mechanism is arranged close to the test mechanism, and is used to adjust the environmental parameters of the test mechanism; the circuit test board is connected with several heat dissipation mechanisms with different placement modes, which are used to be attached to the intelligent power module coated with heat-conductive silicone grease to test the heat-conductive performance of the heat-conductive silicone grease.

2. The thermally conductive silicone grease testing device of claim 1, wherein, The environment adjusting mechanism comprises a temperature control mechanism, which comprises a temperature controller connected with a heater and a heat dissipation fan, and is used to control the power of the heater and the heat dissipation fan according to the temperature of the circuit test board.

3. The thermal silicone grease testing device of claim 2, wherein, The environment adjusting mechanism comprises a humidifying mechanism arranged at the side of the test mechanism; the humidifying mechanism comprises an evaporator, and the evaporator is connected with a water tank and a humidifying fan at two sides respectively.

4. The thermal silicone grease testing device of claim 1, wherein, The heat dissipation mechanism comprises a first heat sink, a second heat sink and a third heat sink, the height of the first heat sink is greater than that of the second heat sink, and the height of the second heat sink is greater than that of the third heat sink.

5. The thermal silicone grease testing device of claim 1, wherein, The vibration table is connected with a two-dimensional displacement table away from one side of the circuit test board, and the two-dimensional displacement table is connected with a rotary workbench away from one side of the circuit test board, the two-dimensional displacement table is used to drive the circuit test board to move in X direction and Y direction, and the rotary workbench is used to drive the two-dimensional displacement table to rotate.

6. The thermal silicone grease testing device of claim 1, wherein, A quick clamp is arranged on the vibration table close to the circuit test board, and is used to clamp the circuit test board.

7. The thermal silicone grease testing device of claim 3, wherein, The humidifying mechanism further comprises a motor and a humidity controller, the humidity controller is used to regulate the rotating speed of the motor, and the motor is connected with the water tank.

8. The thermal silicone grease testing device of claim 3, wherein, Further comprising a box body, the box body comprises a first sealed cavity and a second sealed cavity, the first sealed cavity is located above the second sealed cavity, the test mechanism and the humidifying mechanism are arranged in the first sealed cavity, and the temperature control mechanism is arranged in the second sealed cavity.

9. The thermal silicone grease testing device of claim 8, wherein, A partition plate is arranged between the first sealed cavity and the second sealed cavity, and is used to isolate the first sealed cavity and the second sealed cavity.

10. The thermal silicone grease testing device of claim 9, wherein, A heat exchange hole is further arranged on the partition plate, and the heat exchange hole communicates the first sealed cavity and the second sealed cavity.

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