Inductor temperature rise test system

Abstract

The application provides an inductor temperature rise test system, comprising a temperature detection unit, a cooling unit, a power supply unit, and a first heat shield and a second heat shield. The temperature detection unit is covered by using the first heat shield and the second heat shield, and the heat shields are arranged in a multi-layer structure. The temperature detection unit is arranged in the second heat shield in the innermost layer. The first heat shield in the outer layer can be used to reduce the influence of the external environment on the temperature detection unit. The space between the first heat shield and the second heat shield can be used to reduce the influence of external air flow or sharp temperature change on the air temperature in the second heat shield, thereby facilitating the cooling unit to simulate the cooling environment of the inductor and reducing the influence of the external environment on the temperature detection unit, thereby improving the precision of the temperature detection unit in the temperature rise test of the product to be tested, and solving the problem of low test precision of the inductor temperature rise test system in the prior art.

Description

Technical Field

[0001] This application relates to the technical field of electrical component testing devices, specifically to an inductor temperature rise testing system. Background Technology

[0002] Inductors generate heat during operation. To reduce their temperature and extend their lifespan, inductors are typically cooled. Temperature rise testing is a crucial component of product performance testing, measuring the product's operating parameters at different temperatures to better assess its lifespan. Currently, temperature rise testing is conducted at room temperature. Test conditions are switched manually by alternating the input voltage and load. After collecting temperature data, the temperature rise is calculated based on the collected data and the ambient temperature.

[0003] However, in related technologies, although it is possible to test the temperature rise of products due to the influence of ambient temperature, the test accuracy is low. In some precision instruments, these test results are difficult to meet actual needs. Utility Model Content

[0004] The purpose of this application is to provide an inductor temperature rise testing system to improve the problem of low testing accuracy in current inductor temperature rise testing systems.

[0005] This application provides an inductor temperature rise testing system, including: a temperature detection unit, a cooling unit, a power supply unit, and a first heat shield and a second heat shield. The temperature detection unit includes an inductor temperature detection device for detecting the temperature of the inductor under test. The cooling unit includes an inductor mounting base for mounting the inductor under test and cooling it. The power supply unit is used to supply power to the inductor under test. The first heat shield is located outside the second heat shield, and there is a gap between the first heat shield and the second heat shield. The second heat shield covers the inductor mounting base.

[0006] In one embodiment, the inductor temperature rise testing system further includes a heat insulation plate, and the inductor mounting base, the first heat insulation cover, and the second heat insulation cover are all disposed on the heat insulation plate.

[0007] In one embodiment, the cooling unit includes a water chiller, the inductor mounting base has a water-cooling channel communicating with the water chiller, and the water chiller further includes a water-cooling pipe communicating with the water-cooling channel, the water-cooling pipe passing through the first heat insulation cover and the second heat insulation cover.

[0008] In one embodiment, the water-cooling channel has an inlet and an outlet, and the temperature detection unit further includes:

[0009] A first temperature detection device is disposed at the water inlet and is used to detect the temperature at the water inlet.

[0010] A second temperature detection device is disposed at the water outlet and is used to detect the temperature at the water outlet; and

[0011] The terminal device is communicatively connected to the first temperature detection device to obtain the temperature at the water inlet; the terminal device is communicatively connected to the second temperature detection device and electrically connected to the power supply unit to obtain the temperature at the water outlet.

[0012] In one embodiment, a first bracket is provided at the water inlet, and the first temperature detection device has a first connecting section and a first detection section. The first connecting section is connected to the first bracket, and the first detection section extends out of the first bracket and is suspended in the air. The first detection section is used to detect the water temperature at the water inlet.

[0013] In one embodiment, the direction in which the first detection segment extends from one end connected to the first connecting segment to the other end is the direction of water flow at the inlet.

[0014] In one embodiment, a second bracket is provided at the water outlet, and the second temperature detection device has a second connecting section and a second detection section. The second connecting section is connected to the second bracket, and the second detection section extends out of the second bracket and is suspended in the air. The second detection section is used to detect the water temperature at the water outlet.

[0015] In one embodiment, the direction in which the second detection segment extends from one end connected to the second connecting segment to the other end is the direction of water flow at the outlet.

[0016] In one embodiment, the temperature detection unit and the power supply unit are electrically connected via a first wire. The inductor temperature rise testing system further includes a first shielding structure covering the first wire, which is used to shield electromagnetic waves emitted by the first wire. The terminal device and the temperature detection unit are electrically connected via a second wire. The inductor temperature rise testing system further includes a second shielding structure covering the second wire, which is used to shield electromagnetic waves emitted by the second wire.

[0017] In one embodiment, the first heat shield has an operating port for taking out and placing the inductor under test and the second heat shield. The operating port is provided with an operating door, which has an open state for opening the operating port and a closed state for closing the operating port.

[0018] According to the inductor temperature rise testing system in the above embodiments, the temperature detection unit is covered by a first heat insulation cover and a second heat insulation cover, and the heat insulation cover is set as a multi-layer structure. The temperature detection unit is placed in the innermost second heat insulation cover. The outer first heat insulation cover can be used to reduce the influence of the external environment on the temperature detection unit. The gap between the first heat insulation cover and the second heat insulation cover can be used to reduce the influence of external air flow or rapid temperature changes on the air temperature in the second heat insulation cover. This is beneficial to reducing the influence of the external environment on the temperature detection unit when the cooling unit simulates the cooling environment of the inductor, thereby improving the accuracy of the temperature rise test of the product under test and solving the problem of low test accuracy of the inductor temperature rise testing system in the prior art. Attached Figure Description

[0019] Figure 1 This is a schematic diagram of the structure of an inductor temperature rise testing system provided in an embodiment of this application.

[0020] Figure 2 This is a schematic diagram of the water inlet in an inductor temperature rise testing system provided in an embodiment of this application.

[0021] Figure 3 This is a schematic diagram of the water outlet in an inductor temperature rise testing system provided in an embodiment of this application.

[0022] in:

[0023] 1. Inductor temperature rise testing system; 10. Inductor mounting base; 110. Water cooling channel; 111. Water inlet; 112. Water outlet; 113. First bracket; 114. Second bracket; 115. First temperature detection device; 1151. First connecting section; 1152. First detection section; 116. Second temperature detection device; 1161. Second connecting section; 1162. Second detection section; 20. Cooling unit; 30. Power supply unit; 40. First heat insulation cover; 50. Second heat insulation cover; 60. Heat insulation board; 70. Terminal equipment; 80. First wire; 90. Second wire. Detailed Implementation

[0024] The present application will be further described in detail below with reference to specific embodiments and accompanying drawings. Similar elements in different embodiments are referred to by associated similar element reference numerals. In the following embodiments, many details are described to facilitate a better understanding of the present application. However, those skilled in the art will readily recognize that some features may be omitted in different situations, or may be replaced by other elements, materials, or methods. In some cases, certain operations related to the present application are not shown or described in the specification. This is to avoid obscuring the core parts of the present application with excessive description. For those skilled in the art, detailed description of these related operations is not necessary; they can fully understand the related operations based on the description in the specification and general technical knowledge in the art.

[0025] Furthermore, the features, operations, or characteristics described in the specification can be combined in any suitable manner to form various embodiments, and the operational steps involved in each embodiment can also be rearranged or adjusted in a manner that is obvious to those skilled in the art. Therefore, the specification and drawings are only for clearly describing a particular embodiment and do not imply that they represent the necessary components and / or order.

[0026] The serial numbers assigned to components in this document, such as "first" and "second," are used only to distinguish the described objects and have no sequential or technical meaning. The terms "connection" and "linkage" used in this application, unless otherwise specified, include both direct and indirect connections (linkages).

[0027] Please also refer to Figure 1 This application provides an inductor temperature rise testing system 1, which can be used to test the temperature rise of inductors. In this embodiment, the inductor temperature rise testing system 1 includes: a temperature detection unit, a cooling unit 20, a power supply unit 30, a first heat insulation cover 40, and a second heat insulation cover 50. The power supply unit 30 is used to supply power to the inductor under test. In some embodiments, the power supply unit 30 can also be used to supply power to other electrical appliances, such as the temperature detection unit, etc., which can be specifically set according to the actual scenario.

[0028] The temperature detection unit includes an inductor temperature detection device for detecting the temperature of the inductor under test. This application does not limit the specific form and structure of the inductor temperature detection device. For example, in this embodiment, the inductor temperature detection device can be a thermocouple; in some other embodiments, a thermistor can also be used, depending on the actual situation.

[0029] Furthermore, in one embodiment, the inductor under test is communicatively connected to the power supply unit 30 via a first conductor 80. It is understood that since the first conductor 80 generates a magnetic field when current flows through it, this magnetic field may affect the temperature detection unit and cause errors. Therefore, in this embodiment, the inductor temperature rise testing system 1 further includes a first shielding structure. The first shielding structure is used to shield the magnetic field generated by the first conductor 80 when energized, thereby improving the detection accuracy of the temperature detection unit. This embodiment does not limit the specific form and structure of the first shielding structure. For example, in one embodiment, the first shielding structure can be set as aluminum foil, and the aluminum foil can be wrapped around the outer surface of the first conductor 80 to achieve a shielding effect. In some other embodiments, the first shielding structure can also be set as a shielding tube, and the first conductor 80 can be passed through the shielding tube to achieve a shielding effect. The specific configuration can be determined according to actual conditions and is not limited here.

[0030] The cooling unit 20 includes an inductor mounting base 10, which is used to mount the inductor under test and cool it. Further, in this embodiment, the cooling unit 20 includes a water chiller. The inductor mounting base 10 has a water-cooling channel 110 communicating with the water chiller. The water-cooling channel 110 can be filled with coolant to cool the inductor under test. The water chiller also includes a water-cooling pipe communicating with the water-cooling channel 110. The water-cooling pipe passes through a first heat insulation cover 40 and a second heat insulation cover 50. In this embodiment, the water chiller is located outside the first heat insulation cover 40 and the second heat insulation cover 50, and is connected to the inductor mounting base 10 via the water-cooling pipe. This avoids or reduces the influence of electromagnetic waves generated by the water chiller during operation on the temperature detection unit.

[0031] In one embodiment, the water-cooling channel 110 has an inlet 111 and an outlet 112. The temperature detection unit further includes a first temperature detection device 115 and a terminal device 70. The first temperature detection device 115 is disposed at the inlet 111 and is used to detect the temperature at the inlet 111. The terminal device 70 is communicatively connected to the first temperature detection device 115 to obtain the temperature of the inductor under test. The terminal device 70 is used to determine the temperature rise state of the inductor under test based on the values ​​of the detected sensor temperature and the temperature at the inlet.

[0032] Specifically, the following methods can be used to determine whether the temperature of the inductor under test is in a stable state:

[0033] The water temperature obtained by terminal device 70 at time t is T. 水 The temperature of the inductor under test is T. 电感 At this time, the temperature of the inductor being measured is related to the water temperature ΔT. t =T 水 -T电感 .

[0034] At time t+x, the temperature difference between the water and the inductor being measured is ΔT. t+x Where x is a set value, in △T t -△T t+x When the value is less than the set value, the terminal device 70 determines that the temperature of the inductor under test is in a stable state. For example, please refer to the table below:

[0035]

[0036] As shown in the table above, the initial time is recorded as time t, which is the time t=0 shown in the table. At this time, the water temperature is t0, the temperature of the inductor is T0, and ΔT0=T0-t0.

[0037] After 0.2 seconds, when x equals 0.2, the time is 0 + 0.2, and the water temperature is t. 0.2 The temperature of the inductor is measured as T. 0.2 At this time, △T 0+0.2 =T 0.2 -t 0.2 ;

[0038] In △T0-△T 0.2 If the value is less than 0.2, the terminal device 70 determines that the temperature of the inductor under test is in a stable state.

[0039] Furthermore, in one embodiment, the number of inductor temperature detection devices is two or more, and the inductor temperature detection devices are used to detect the temperature at different locations on the inductor. For example, in some embodiments, the number of inductor temperature detection devices can be set to three, four or five, etc. The terminal device 70 takes the highest temperature among the temperature data detected by each inductor temperature detection device as the temperature of the inductor under test.

[0040] The temperature detection unit also includes a second temperature detection device 116, which is located at the water outlet 112 and is used to detect the temperature at the water outlet 112. The terminal device 70 is communicatively connected to the second temperature detection device 116, and collects and analyzes the data generated by the second temperature detection device 116 to obtain the temperature at the water outlet 112. In other words, in this embodiment, the first temperature detection device 115 and the second temperature detection device 116 are used to detect the water temperature before and after passing through the inductor under test, respectively, and then use the aforementioned temperature difference as the temperature rise change value of the inductor under test.

[0041] In this embodiment, the temperature detection unit and the terminal device 70 are communicatively connected via the second conductor 90. It is understood that the second conductor 90 generates a magnetic field when current flows through it, which may affect the temperature detection unit and cause errors. Therefore, in this embodiment, the inductor temperature rise testing system 1 further includes a second shielding structure. The second shielding structure is used to shield the magnetic field generated by the second conductor 90 when energized, thereby improving the detection accuracy of the temperature detection unit. This embodiment does not limit the specific form and structure of the second shielding structure. For example, in one embodiment, the second shielding structure can be set as aluminum foil, and the aluminum foil can be wrapped around the outer surface of the second conductor 90 to achieve a shielding effect. In some other embodiments, the second shielding structure can also be set as a shielding tube, and the second conductor 90 can be passed through the shielding tube to achieve a shielding effect. The specific configuration can be determined according to actual conditions and is not limited here.

[0042] For further details, please refer to Figure 2 In one embodiment, a first support 113 is provided at the water inlet 111. The first temperature detection device 115 has a first connecting section 1151 and a first detection section 1152. The first connecting section 1151 is connected to the first support 113, and the first detection section 1152 extends out of the first support 113 and is suspended in the air. The first detection section 1152 is used to detect the water temperature at the water inlet 111. In this embodiment, supporting the first detection section 1152 with the first support 113 and suspending it in the air can prevent the first detection section 1152 from contacting the inner wall of the water inlet 111 of the water cooling channel 110, thereby avoiding the influence of the pipe wall of the water cooling channel 110 on the detection results. It is understood that if the first detection section 1152 contacts the inner wall of the water inlet 111 of the water cooling channel 110, the temperature detected by the first detection section 1152 will not only be the water temperature at the water inlet 111, thus causing errors in the detection results.

[0043] Furthermore, in one embodiment, the direction in which the first detection segment 1152 extends from one end connected to the first connecting segment 1151 to the other end is the direction of water flow at the inlet 111. Specifically, in this embodiment, the first detection segment 1152 may be located inside the water cooling channel 110, and at this time, the direction of water flow at the inlet 111 is from outside the water cooling channel 110 to inside the water cooling channel 110. This makes the direction in which the first detection segment 1152 extends from one end connected to the first connecting segment 1151 to the other end consistent with the direction of water flow at the inlet 111, thereby reducing or avoiding the possibility of water flow damaging the first detection segment 1152, and thus helping to ensure the reliability of the detection results of the first detection segment 1152.

[0044] In addition, please see Figure 3In some embodiments, a second support 114 is provided at the water outlet 112. The second temperature detection device 116 has a second connecting section 1161 and a second detection section 1162. The second connecting section 1161 is connected to the second support 114, and the second detection section 1162 extends out of the second support 114 and is suspended in the air. The second detection section 1162 is used to detect the water temperature at the water outlet 112. In this embodiment, using the second support 114 to support and suspend the second detection section 1162 can avoid the second detection section 1162 from contacting the inner wall of the water outlet 112 of the water cooling channel 110, thereby avoiding the influence of the pipe wall of the water cooling channel 110 on the detection results. It is understood that if the second detection section 1162 contacts the inner wall of the water outlet 112 of the water cooling channel 110, the temperature detected by the second detection section 1162 will not only be the water temperature at the water outlet 112, thus causing errors in the detection results.

[0045] Furthermore, in one embodiment, the direction in which the second detection segment 1162 extends from one end connected to the second connecting segment 1161 to the other end is the water flow direction at the outlet 112. Specifically, in this embodiment, the second detection segment 1162 can be located outside the water cooling channel 110, and at this time, the water flow direction at the outlet 112 is from outside the water cooling channel 110 to outside the water cooling channel 110. This makes the direction in which the second detection segment 1162 extends from one end connected to the second connecting segment 1161 to the other end consistent with the water flow direction at the outlet 112, thereby reducing or avoiding the possibility of the water flow damaging the second detection segment 1162, and thus helping to ensure the reliability of the detection results of the second detection segment 1162.

[0046] The first heat insulation cover 40 is located outside the second heat insulation cover 50, and there is a gap between the first heat insulation cover 40 and the second heat insulation cover 50. The second heat insulation cover 50 covers the inductor mounting base 10. That is to say, in this embodiment, a double-layer heat insulation structure is adopted. The first heat insulation cover 40 can be used to reduce the influence of the external environment on the temperature detection unit. And because there is a gap between the first heat insulation cover 40 and the second heat insulation cover 50, this gap can be used to reduce the influence of external air flow or rapid temperature changes on the air temperature in the second heat insulation cover 50. This is beneficial to reducing the influence of the external environment on the temperature detection unit when the cooling unit 20 simulates the cooling environment of the inductor. That is to say, in this embodiment, the temperature change detected by the temperature detection unit comes from the temperature change generated by the inductor during the cooling process, thereby improving the accuracy of the temperature rise test of the product under test by the temperature detection unit.

[0047] Specifically, in this embodiment, the first heat insulation cover has an operating port for taking out and placing the inductor and the second heat insulation cover 50. When it is necessary to test the temperature rise of the inductor, the second heat insulation cover 50 can be opened through the operating port of the first heat insulation cover, and the inductor can be installed on the inductor mounting base 10. Then the second heat insulation cover 50 is placed around the inductor mounting base 10 for easy operation by the user.

[0048] Furthermore, in this embodiment, an operating door can also be provided at the operating port. The operating door has an open state (opening the operating port) and a closed state (closing the operating port). As mentioned above, when the user needs to install the inductor under test onto the inductor mounting base 10, the user can open the operating door to make the operating door open, thereby successfully installing the inductor under test onto the inductor mounting base 10. After the user has installed the inductor under test, the user can close the operating door to make the operating door closed, thereby successfully separating the second heat insulation layer and the inductor under test from the external environment.

[0049] It should be noted that the embodiments of this application do not limit the opening and closing method of the operating door. For example, in one embodiment, the operating door can be opened or closed by controlling the rotation of the operating door relative to the operating opening through a hinged connection. In another embodiment, the operating door can be opened or closed by controlling the horizontal movement of the operating door relative to the operating opening through a sliding connection. The specific method can be set according to the actual situation.

[0050] It is understood that the embodiments of this application do not limit the specific structure and form of the first heat shield 40 and the second heat shield 50. For example, in some embodiments, the first heat shield 40 can be configured to have a similar structure to the second heat shield 50; specifically, the second heat shield 50 can be a scaled-down version of the first heat shield 40. Furthermore, both the first heat shield 40 and the second heat shield 50 can be configured to be transparent to allow users to observe the inductor under test disposed within the first heat shield 40 and the second heat shield 50. For example, in some embodiments, the first heat shield 40 and the second heat shield 50 can be made of plastic or glass, etc., and the specific configuration can be determined according to the actual situation.

[0051] Furthermore, in some embodiments, the inductor temperature rise testing system 1 also includes a heat insulation plate 60. The inductor mounting base 10, the first heat insulation cover 40, and the second heat insulation cover 50 are all disposed on the heat insulation plate 60. The heat insulation plate 60 can also isolate the inductor under test and the temperature detection unit from the influence of the external environment temperature. It should be noted that the embodiments of this application do not specify the specific form and structure of the heat insulation plate 60. For example, it can be made of wood, plastic, or glass, etc., and can be set according to the actual situation.

[0052] In summary, the inductor temperature rise testing system 1 provided in this application embodiment covers the temperature detection unit by using a first heat insulation cover 40 and a second heat insulation cover 50, and the heat insulation cover is set as a multi-layer structure. The temperature detection unit is placed in the innermost second heat insulation cover 50. The outer first heat insulation cover 40 can be used to reduce the influence of the external environment on the temperature detection unit. The gap between the first heat insulation cover 40 and the second heat insulation cover 50 can be used to reduce the influence of external air flow or rapid temperature changes on the air temperature in the second heat insulation cover 50. This is beneficial for the cooling unit 20 to simulate the cooling environment of the inductor, reducing the influence of the external environment on the temperature detection unit, thereby improving the accuracy of the temperature rise test of the product under test by the temperature detection unit, and solving the problem of low test accuracy of the inductor temperature rise testing system 1 in the prior art.

[0053] The above examples illustrate this application only to aid understanding and are not intended to limit its scope. Those skilled in the art to which this application pertains can make various simple deductions, modifications, or substitutions based on the ideas presented.

Claims

1. An inductor temperature rise testing system, characterized in that, include: A temperature detection unit, comprising an inductor temperature detection device for detecting the temperature of the inductor under test; A cooling unit, the cooling unit including an inductor mounting base, the inductor mounting base being used to mount the inductor under test and to cool the inductor under test; A power supply unit, wherein the power supply unit is at least used to supply power to the inductor under test; as well as A first heat insulation cover and a second heat insulation cover, wherein the first heat insulation cover is located outside the second heat insulation cover and there is a gap between the first heat insulation cover and the second heat insulation cover, and the second heat insulation cover is provided outside the inductor mounting base.

2. The inductor temperature rise testing system according to claim 1, characterized in that, The inductor temperature rise testing system also includes a heat insulation plate, and the inductor mounting base, the first heat insulation cover, and the second heat insulation cover are all disposed on the heat insulation plate.

3. The inductor temperature rise testing system according to claim 1, characterized in that, The cooling unit includes a water chiller, the inductor mounting base has a water cooling channel communicating with the water chiller, the water chiller also includes a water cooling pipe communicating with the water cooling channel, and the water cooling pipe passes through the first heat insulation cover and the second heat insulation cover.

4. The inductor temperature rise testing system according to claim 3, characterized in that, The water-cooling channel has an inlet and an outlet, and the temperature detection unit further includes: A first temperature detection device is disposed at the water inlet and is used to detect the temperature at the water inlet. A second temperature detection device is disposed at the water outlet and is used to detect the temperature at the water outlet; and The terminal device is communicatively connected to the first temperature detection device to obtain the temperature at the water inlet; the terminal device is communicatively connected to the second temperature detection device and electrically connected to the power supply unit to obtain the temperature at the water outlet.

5. The inductor temperature rise testing system according to claim 4, characterized in that, A first bracket is provided at the water inlet. The first temperature detection device has a first connecting section and a first detection section. The first connecting section is connected to the first bracket. The first detection section extends out of the first bracket and is suspended in the air. The first detection section is used to detect the water temperature at the water inlet.

6. The inductor temperature rise testing system according to claim 5, characterized in that, The direction in which the first detection segment extends from one end connected to the first connecting segment to the other end is the direction of water flow at the inlet.

7. The inductor temperature rise testing system according to claim 4, characterized in that, A second bracket is provided at the water outlet. The second temperature detection device has a second connecting section and a second detection section. The second connecting section is connected to the second bracket. The second detection section extends out of the second bracket and is suspended in the air. The second detection section is used to detect the water temperature at the water outlet.

8. The inductor temperature rise testing system according to claim 7, characterized in that, The direction in which the second detection segment extends from one end connected to the second connecting segment to the other end is the direction of water flow at the outlet.

9. The inductor temperature rise testing system according to claim 4, characterized in that, The temperature detection unit and the power supply unit are electrically connected via a first wire. The inductor temperature rise testing system further includes a first shielding structure, which covers the first wire and is used to shield electromagnetic waves emitted by the first wire. The terminal device and the temperature detection unit are electrically connected via a second wire. The inductor temperature rise testing system further includes a second shielding structure, which covers the second wire and is used to shield electromagnetic waves emitted by the second wire.

10. The inductor temperature rise testing system according to claim 4, characterized in that, The first heat shield has an operating port for taking out and placing the inductor under test and the second heat shield. The operating port is provided with an operating door, which has an open state for opening the operating port and a closed state for closing the operating port.

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