Thermoelectric device power-on test device
Through the integrated testing device of the environmental control box, heat dissipation pallet and ammeter, the problem of long-term power-on testing of thermoelectric devices is solved, and efficient and reliable testing results are achieved.
Patent Information
- Application Number
- CN202421067764.8
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- Filing Date
- 2024-05-15
- Publication Date
- 2025-07-04
- Estimated Expiration
- 2034-05-15
AI Technical Summary
The prior art lacks long-term power-on tests and intermittent switching cycle power-on test solutions for long-term service thermoelectric devices under a variety of harsh environmental conditions.
A test device integrating an environment control box, heat dissipation pallet, power supply and ammeter is designed to realize long-term power-on test of thermoelectric devices by simulating the working environment and controlling the heat dissipation conditions at the heat end.
It realizes efficient and reliable long-term power-on test of thermoelectric devices, and can stably monitor current changes under a variety of environmental conditions, simplifying the operation process.
Smart Images
Figure CN223065399U_ABST
Abstract
Description
Technical Field
[0001] The utility model relates to the technical field of thermoelectric devices, and particularly to a power-on test device for thermoelectric devices. Background Art
[0002] A thermoelectric device is a semiconductor electronic component that can convert electrical energy and thermal energy into each other, and has advantages such as all-solid state, no moving parts, small volume, and long service life. Currently, it is widely used in fields such as temperature control of optical communication modules and heat dissipation of military weapons and equipment.
[0003] For thermoelectric devices in long-term service, it is necessary to conduct long-term power-on tests under different working conditions and intermittent switch cycle power-on tests under various harsh environmental conditions. However, there is no such test scheme in the prior art. Summary of the Utility Model
[0004] The purpose of the utility model is to provide a power-on test device for thermoelectric devices, which can realize the function of long-term power-on test for thermoelectric devices by simulating the working environment of thermoelectric devices and controlling the heat dissipation conditions of the hot ends of thermoelectric devices. The power-on test device for thermoelectric devices has high efficiency, simple operation, reliable operation, and convenient evaluation.
[0005] The technical means adopted by the utility model are as follows:
[0006] A power-on test device for thermoelectric devices includes: an environmental control box, a heat dissipation tray, a power supply, and an ammeter;
[0007] A plurality of pairs of tray racks are arranged in the cavity of the environmental control box. The heat dissipation tray is installed on the tray racks through slide rails on the left and right sides. A plurality of installation grooves are arranged on the upper surface of the heat dissipation tray, a radiator is arranged on the lower surface of the heat dissipation tray, and thermoelectric devices are placed in the installation grooves;
[0008] The power supply and the ammeter are arranged outside the environmental control box;
[0009] The power supply is connected to a plurality of thermoelectric devices; the power supply supplies power to the thermoelectric devices;
[0010] The ammeter is connected to a plurality of thermoelectric devices.
[0011] Furthermore, a cable hole for allowing a wire to pass through is arranged on the side wall of the environmental control box, and the power supply and the ammeter are connected to the thermoelectric devices through wires.
[0012] Furthermore, the radiator is one of a heat pipe vapor chamber, a heat pipe, and a profile radiator.
[0013] Furthermore, the thermoelectric devices are installed on the heat dissipation tray through a thermal interface material.
[0014] Further, the thermal interface material includes silicone grease, silicone pads, and graphite pads.
[0015] Further, several thermoelectric devices are connected in parallel and then connected to a power supply, and several thermoelectric devices are respectively connected in series with ammeters.
[0016] Further, the power supply includes a constant current and constant voltage DC power supply, a cycle time and number controller, and a relay.
[0017] Further, the heat dissipation trays are arranged at equal intervals.
[0018] Compared with the prior art, the present utility model has the following advantages:
[0019] The present utility model integrates an environmental control box, a heat dissipation tray for thermoelectric devices, a power supply, and an ammeter into a unified test system to simulate the working environment of thermoelectric devices. By setting a radiator to control the heat dissipation conditions at the hot end of the thermoelectric devices, long-term power-on testing of the thermoelectric devices is completed.
[0020] The heat dissipation tray of the present utility model combines the heat dissipation structure with the tray, facilitating the installation of multiple thermoelectric devices of various models and dissipating heat at the hot end of the thermoelectric devices. When conducting power-on testing, the temperature at the hot end of the thermoelectric devices is maintained at the same condition as the ambient temperature. At the same time, slide rails are provided on both sides of the tray, enabling the heat dissipation tray to be placed in the environmental control box conveniently and stably.
[0021] The current data acquisition module of the present utility model can simultaneously monitor and record the input current changes of each thermoelectric device for subsequent evaluation. Description of the Drawings
[0022] In order to more clearly illustrate the technical solutions in the embodiments of the present utility model or the prior art, the following will briefly introduce the drawings required for use in the description of the embodiments or the prior art. Obviously, the drawings in the following description are some embodiments of the present utility model. For those of ordinary skill in the art, other drawings can be obtained based on these drawings without creative efforts.
[0023] Figure 1 It is a schematic diagram of the component composition of the device of the present utility model;
[0024] Figure 2 It is a schematic diagram of the structure of the environmental control box of the present utility model;
[0025] Figure 3 It is a schematic diagram of the structure of the heat dissipation tray of the present utility model;
[0026] Figure 4 It is a schematic diagram of the connection of the test circuit of the present utility model;
[0027] In the figure: 1. Environmental control box; 2. Heat dissipation tray; 3. Power supply; 4. Ammeter; 5. Thermoelectric device; 101. Cavity; 102. Tray rack; 103. Cable hole; 201. Installation groove; 202. Slide rail; 203. Radiator. Detailed implementation manners
[0028] It should be noted that, without conflict, the embodiments in the present utility model and the features in the embodiments may be combined with each other. The present utility model will be described in detail below with reference to the drawings and in combination with the embodiments.
[0029] To make the objectives, technical solutions and advantages of the embodiments of the present utility model clearer, the technical solutions in the embodiments of the present utility model will be clearly and completely described below with reference to the accompanying drawings in the embodiments of the present utility model. Apparently, the described embodiments are only a part rather than all of the embodiments of the present utility model. The description of at least one exemplary embodiment below is actually only illustrative and in no way limits the present utility model and its application or use. All other embodiments obtained by those of ordinary skill in the art based on the embodiments of the present utility model without creative efforts shall fall within the protection scope of the present utility model.
[0030] It should be noted that the terms used herein are only for describing the specific implementation manners and are not intended to limit the exemplary embodiments of the present utility model. As used herein, unless otherwise clearly specified in the context, the singular form is also intended to include the plural form. In addition, it should be understood that when the terms "comprise" and / or "include" are used in this specification, they indicate the presence of the described features, steps, operations, devices, components and / or their combinations.
[0031] Unless otherwise specifically stated, the relative arrangements of the components and steps, numerical expressions and values set forth in these embodiments do not limit the scope of the present utility model. At the same time, it should be clear that, for the convenience of description, the dimensions of the various parts shown in the drawings are not drawn in actual proportional relationships. Technologies, methods and devices known to those of ordinary skill in the relevant art may not be discussed in detail, but where appropriate, the technologies, methods and devices should be regarded as part of the authorized specification. In all the examples shown and discussed herein, any specific values should be construed as merely exemplary and not as a limitation. Therefore, other examples of the exemplary embodiments may have different values. It should be noted that: like reference numerals and letters denote like items in the following drawings, and thus, once an item is defined in one drawing, it does not need to be further discussed in subsequent drawings.
[0032] In the description of the present utility model, it should be understood that the orientation or positional relationship indicated by orientation words such as "front, rear, upper, lower, left, right", "lateral, vertical, perpendicular, horizontal" and "top, bottom", etc. is usually based on the orientation or positional relationship shown in the drawings. It is only for the convenience of describing the present utility model and simplifying the description. Without contrary description, these orientation words do not indicate and imply that the device or component referred to must have a specific orientation or be constructed and operated in a specific orientation. Therefore, it should not be construed as a limitation on the protection scope of the present utility model: the orientation words "inside, outside" refer to the inside and outside relative to the contour of each component itself.
[0033] For the convenience of description, spatial relative terms such as "above...", "over...", "on the upper surface of...", "upper" etc. can be used here to describe the spatial positional relationship between a device or feature shown in the figure and other devices or features. It should be understood that the spatial relative terms are intended to include different orientations in use or operation other than the orientation described in the figure for the device. For example, if the device in the figure is inverted, the device described as "above other devices or structures" or "over other devices or structures" will then be positioned as "below other devices or structures" or "under other devices or structures". Thus, the exemplary term "above..." can include both the orientations of "above..." and "below...". The device can also be positioned in other different ways (rotated 90 degrees or in other orientations), and corresponding interpretations should be made for the spatial relative descriptions used here.
[0034] As Figures 1-4 shown, the present utility model provides a thermoelectric device power-on test device, including: an environmental control box 1, a heat dissipation tray 2, a power supply 3 and an ammeter 4;
[0035] The environmental control box 1 can realize a stable simulated environment of temperature and humidity in the internal sealed cavity. A number of pairs of tray racks 102 are arranged in the cavity 101 of the environmental control box 1. The heat dissipation tray 2 is installed on the tray rack 102 through the slide rails 202 on the left and right sides, and the heat dissipation trays 2 are arranged at equal intervals. A number of mounting grooves 201 are arranged on the upper surface of the heat dissipation tray 2, and a radiator 203 is arranged on the lower surface of the heat dissipation tray 2. The thermoelectric device 5 is placed in the mounting groove 201; the environmental control box 1 has heating function, refrigeration function, humidification function, vacuum pumping function and visual window.
[0036] The power supply 3 and the ammeter 4 are arranged outside the environmental control box 1;
[0037] The power supply 3 is connected to a number of thermoelectric devices 5; the power supply 3 supplies power to the thermoelectric devices 5, and a number of thermoelectric devices 5 are connected in parallel and then connected to the power supply 3; the power supply 3 includes a constant current and constant voltage DC power supply, a cycle time and number controller, and a relay.
[0038] The ammeter 4 is connected to a number of thermoelectric devices 5; the ammeter 4 monitors and records the input current of the thermoelectric devices 5 in real time. A cable hole 103 for the wire to pass through is provided on the side wall of the environmental control box 1, and the power supply 3 and the ammeter 4 are connected to the thermoelectric devices 5 through wires. A number of thermoelectric devices 5 are respectively connected in series with the ammeter 4.
[0039] The radiator 203 is one of a heat pipe, a heat pipe, and a profile radiator.
[0040] The thermoelectric device 5 is installed on the heat dissipation tray 2 through a thermal interface material. The thermal interface material includes silicone grease, silicone rubber pad, graphite sticker, etc.
[0041] The working method of the present utility model is as follows:
[0042] Pull out the heat dissipation tray 2, install the thermoelectric device 5 in the installation groove 201 of the heat dissipation tray 2 through a thermal interface material, and connect multiple thermoelectric devices 5 of the same model in parallel on the terminal;
[0043] Push the heat dissipation tray 2 into the environmental control box 1 through the slide rail 202 and the support frame, and multiple groups of parallel-connected thermoelectric devices 5 extend outside the box through the cable hole 103 and are connected to the power supply 3 and the ammeter 4;
[0044] Close the door of the environmental control box 1, seal the cable hole 103, set the environmental conditions inside the environmental control box 1, and after the inside of the environmental control box 1 reaches the stable set conditions, turn on the power supply 3 for power-on testing; during the power-on testing, keep the hot end temperature of the thermoelectric device 5 the same as the environmental temperature.
[0045] Set the input voltage, input current, switch time, and cycle number of each group of thermoelectric devices 5 in the power supply 3, turn on the ammeter 4 to observe and record the input current of the thermoelectric devices 5, and the power-on testing ends.
[0046] Embodiment
[0047] The present utility model provides a thermoelectric device power-on testing device, which is composed of an environmental control box 1, a heat dissipation tray 2, a power supply 3, an ammeter 4, and a thermoelectric device 5 to be measured.
[0048] In this embodiment, the functional area of the environmental control box is a cavity 101, three groups of tray racks 102, and three groups of cable holes 103. The temperature control range is -60°C to 150°C, the humidity control range is 10% to 85%, and it also has the ability to evacuate.
[0049] In this embodiment, the heat dissipation tray 2 is made of aluminum alloy. There are 10 mounting grooves 201 machined on the upper surface according to the size of the thermoelectric device to be measured. The inner surfaces of the mounting grooves are flat and smooth. The upper substrate of the heat dissipation tray 2 is a heat pipe with capillary microchannels and coolant inside. The bottom of the heat dissipation tray 2 is machined into a toothed radiator 203, and the left and right ends of the heat dissipation tray 2 are machined into smooth semi-cylindrical guide rails 202;
[0050] In this embodiment, the power supply 3 consists of a constant voltage and constant current DC power supply, a time and cycle number controller, and a relay, and supplies power to the thermoelectric devices 5 connected in parallel through wires;
[0051] In this embodiment, the ammeter 4 has a 10-channel function and is connected in series with the thermoelectric devices 5. It can display the current curve in real time through the display screen, and can also record and store the current data through storage devices such as USB flash drives;
[0052] In this embodiment, the reliability evaluation test of intermittent power-on power cycling was carried out on 10 thermoelectric devices TEC-19904 made of bismuth telluride materials using the thermoelectric device power-on test device of the present utility model. The test standard is based on "GR-468-CORE 7.1.12"; After evenly applying thermal conductive silicone grease to the hot ends of the 10 thermoelectric devices, they are installed in the mounting grooves of the heat dissipation tray. The positive wires of each thermoelectric device are connected in series to a channel of the ammeter, and then the 10 thermoelectric devices are connected in parallel using a 2-in-20-out parallel wiring terminal. The heat dissipation tray with the thermoelectric devices installed is pushed into the environmental control box through the slide rail and firmly installed on the tray rack; The channel wires of the ammeter and the positive and negative leads after parallel connection are passed through the cable holes and connected to the ammeter and the power supply outside the environmental control box respectively. Close the door of the environmental control box and seal the cable holes with silicone plugs; Turn on the power of the environmental control box, set the temperature to 85 °C and the humidity to 85% RH; After waiting for the environmental conditions in the box to reach the set values, turn on the power supply, set the voltage value to 12V, the current value to 50A, the power-on time to 1.5 min, the power-off time to 4.5 min, and the cycle number to 100 times; Turn on the ammeter to observe and record the current value of each channel, and the power-on test is completed.
[0053] Finally, it should be noted that the above embodiments are only used to illustrate the technical solutions of the present utility model and are not intended to limit them; Although the present utility model has been described in detail with reference to the foregoing embodiments, those of ordinary skill in the art should understand that: It is still possible to modify the technical solutions described in the foregoing embodiments, or perform equivalent replacements on some or all of the technical features; And these modifications or replacements do not cause the essence of the corresponding technical solutions to deviate from the scope of the technical solutions of the embodiments of the present utility model.
Claims
1. A thermoelectric device power-on test device, characterized in that, Including: An environmental control box (1), a heat dissipation tray (2), a power supply (3), and an ammeter (4); A number of pairs of tray racks (102) are arranged in the cavity (101) of the environmental control box (1). The heat dissipation tray (2) is installed on the tray rack (102) through slide rails (202) on the left and right sides. A number of mounting grooves (201) are arranged on the upper surface of the heat dissipation tray (2), and a radiator (203) is arranged on the lower surface of the heat dissipation tray (2). A thermoelectric device (5) is placed in the mounting groove (201); The radiator (203) is one of a heat pipe, a vapor chamber, and a profile radiator; The power supply (3) and the ammeter (4) are arranged outside the environmental control box (1); A cable hole (103) for the wire to pass through is arranged on the side wall of the environmental control box (1), and the power supply (3) and the ammeter (4) are connected to the thermoelectric device (5) through wires; The power supply (3) is connected to a number of thermoelectric devices (5); The power supply (3) supplies power to the thermoelectric device (5); The ammeter (4) is connected to a number of thermoelectric devices (5).
2. The thermoelectric device power-on test apparatus according to claim 1, wherein The thermoelectric device (5) is installed on the heat dissipation tray (2) through a thermal interface material.
3. The thermoelectric device power-on test apparatus according to claim 2, characterized in that, The thermal interface material includes silicone grease, silica gel pad, and graphite pad.
4. The thermoelectric device power-on test device according to claim 1, wherein A number of thermoelectric devices (5) are connected in parallel and then connected to the power supply (3), and a number of thermoelectric devices (5) are respectively connected in series with the ammeter (4).
5. The thermoelectric device power-on test apparatus according to claim 1, wherein, The power supply (3) includes a constant current and constant voltage DC power supply, a cycle time and number controller, and a relay.
6. The thermoelectric device power-on test apparatus according to claim 1, characterized in that The heat dissipation trays (2) are arranged at equal intervals.