CN112180184A - Testing device for thermoelectric module - Google Patents

Testing device for thermoelectric module Download PDF

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Publication number
CN112180184A
CN112180184A CN201910595192.8A CN201910595192A CN112180184A CN 112180184 A CN112180184 A CN 112180184A CN 201910595192 A CN201910595192 A CN 201910595192A CN 112180184 A CN112180184 A CN 112180184A
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temperature control
thermoelectric module
plane
control assembly
end temperature
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金安君
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Zhuhai Lianteng Clean Energy Co ltd
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Zhuhai Lianteng Clean Energy Co ltd
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    • G—PHYSICS
    • G01—MEASURING; TESTING
    • G01R—MEASURING ELECTRIC VARIABLES; MEASURING MAGNETIC VARIABLES
    • G01R31/00—Arrangements for testing electric properties; Arrangements for locating electric faults; Arrangements for electrical testing characterised by what is being tested not provided for elsewhere
    • G—PHYSICS
    • G01—MEASURING; TESTING
    • G01N—INVESTIGATING OR ANALYSING MATERIALS BY DETERMINING THEIR CHEMICAL OR PHYSICAL PROPERTIES
    • G01N25/00—Investigating or analyzing materials by the use of thermal means
    • G01N25/20—Investigating or analyzing materials by the use of thermal means by investigating the development of heat, i.e. calorimetry, e.g. by measuring specific heat, by measuring thermal conductivity

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Abstract

The invention relates to the technical field of cogeneration, and particularly provides a testing device for a thermoelectric module. The testing device comprises a temperature control unit, the testing device is used for providing temperature difference for the thermoelectric module so as to enable the thermoelectric module to be in a power generation state, the power supply unit is used for supplying power for the temperature control unit, the voltage stabilizer comprises a power supply assembly and a voltage stabilizer connected with the power supply assembly, the temperature control unit is connected with the output end of the voltage stabilizer, in the process of testing the performance of the thermoelectric module, the hot end adopts an electric heating element, the voltage of the electric heating element can influence the accuracy of the performance test of the thermoelectric module, the voltage stabilizer is set to perform voltage stabilization control on the temperature control unit, the stability of the temperature control unit is ensured.

Description

Testing device for thermoelectric module
Technical Field
The invention relates to the technical field of cogeneration, in particular to a testing device of a thermoelectric module.
Background
With the increasing severity of environmental issues, the development of new energy technologies is becoming an important direction, and among them, thermoelectric conversion technologies have been widely studied. Thermoelectric conversion is to directly convert heat energy into electric energy by utilizing the Seebeck Effect (Seebeck Effect), so that heat can be fully obtained from natural heat sources (solar energy, geothermal energy, fire source and the like) and other heat sources (industrial waste heat, waste heat and the like), and the thermoelectric conversion process has the advantages of no carbon emission, no moving parts, low noise, light weight and no need of maintenance, so the development of thermoelectric has important significance.
The thermoelectric module utilizes the special properties of semiconductor materials, and utilizes the temperature difference between the cold end and the hot end to generate electromotive force, and in the test of the thermoelectric module, a test device is often required to test various electrical performance parameters of the thermoelectric module, such as output power, current, internal resistance, heat flux and the like. However, since many factors affect the performance test of the thermoelectric module, such as the pressure of the thermoelectric module, the thermal insulation capability of the device, and the parallelism of the upper and lower surfaces, the accuracy of the performance test of the thermoelectric module is affected, how to improve the test accuracy of the thermoelectric module is an important issue in the development of thermoelectric technology.
Disclosure of Invention
The invention provides a thermoelectric module testing device with higher testing precision, aiming at solving the technical problem that the testing precision of the thermoelectric module testing device is lower.
The invention provides a test device of a thermoelectric module, comprising:
the temperature control unit is used for providing temperature difference for the thermoelectric module so as to enable the thermoelectric module to be in a power generation state; and
the power supply unit is used for supplying power to the temperature control unit and comprises a power supply assembly and a voltage stabilizer connected with the power supply assembly, and the output end of the voltage stabilizer is connected with the temperature control unit.
In some embodiments, the power supply assembly includes a battery and an inverter connected to the battery, an output of the inverter being connected to the regulator.
In some embodiments, the temperature control unit includes a cold end temperature control component and a hot end temperature control component, the thermoelectric module is disposed between the hot end temperature control component and the cold end temperature control component, and the output end of the voltage stabilizer is connected to at least the hot end temperature control component.
In some embodiments, the hot side temperature control assembly comprises a first plane, the cold side temperature control assembly comprises a second plane, and the thermoelectric module is disposed between the first plane and the second plane;
the test device further comprises:
and the pressure adjusting device is used for driving the first plane and/or the second plane to move so as to adjust the pressure of the first plane and the second plane to the thermoelectric module.
In some embodiments, the test device further comprises:
the cold end temperature control assembly is arranged below the support frame, the upper surface of the cold end temperature control assembly forms the second plane, the hot end temperature control assembly is arranged above the cold end temperature control assembly, the lower surface of the hot end temperature control assembly forms the first plane, and the thermoelectric module is horizontally arranged between the first plane and the second plane;
the pressure adjusting device comprises an adjusting screw rod, a threaded through hole is formed in the upper end of the support frame, the adjusting screw rod is in threaded connection with the support frame through the threaded through hole, one end of the adjusting screw rod is connected with the hot end temperature control assembly, and the adjusting screw rod is screwed in/out of the threaded through hole to adjust the pressure of the second plane to the thermoelectric module.
In some embodiments, the test device further comprises:
the parallelism adjusting device comprises a first movable plate, a second movable plate, a connecting bolt and a spring, wherein the first movable plate is movably connected with the adjusting screw rod through a bearing, the connecting bolt penetrates through a through hole formed in the first movable plate and is in threaded connection with the second movable plate, the spring is sleeved on the connecting bolt and is located between the first movable plate and the second movable plate, and the lower end of the second movable plate is connected with the hot end temperature control assembly.
In some embodiments, thermal insulation plates are disposed between the second moving plate and the hot end temperature control assembly, between the support frame and the cold end temperature control assembly, and between the first plane and the second plane.
In some embodiments, the test device further comprises:
the electrical performance testing unit is electrically connected with the thermoelectric module to test the electrical performance parameters of the thermoelectric module; and
and the thermal efficiency calculating unit is used for calculating the thermal efficiency of the thermoelectric module according to the electrical performance parameters.
In some embodiments, the test device further comprises:
and the display device is electrically connected with the electrical performance testing unit so as to display the electrical performance parameters and the thermal efficiency.
In some embodiments, the electrical performance parameters include:
the output power of the thermoelectric module, the current and internal resistance at that output power, and the cold side heat flux of the thermoelectric module.
The technical scheme of the invention has the following beneficial effects:
1) the testing device for the thermoelectric module comprises a temperature control unit, wherein the temperature control unit is used for providing temperature difference for the thermoelectric module so that the thermoelectric module is in a power generation state, the thermoelectric module utilizes the special property of a semiconductor material to form temperature difference between a hot end and a cold end so that electromotive force is generated in the power generation state, and the testing device can test the electrical performance of the thermoelectric module in the power generation state. The power supply unit is used for supplying power for the temperature control unit, including power supply module and the stabiliser of connecting power supply module, the temperature control unit is connected to the output of stabiliser, at the thermoelectric module capability test in-process, electric heating element is adopted to the hot junction, electric heating element's voltage can influence the accuracy of thermoelectric module's capability test, consequently set up the stabiliser and carry out steady voltage control to the temperature control unit, guarantee temperature control unit's stability to improve thermoelectric module's measuring accuracy.
2) According to the testing device provided by the invention, the power supply assembly comprises the storage battery and the inverter connected with the storage battery, the output end of the inverter is connected with the voltage stabilizer, the storage battery is adopted for supplying power, the testing device is convenient to use, the inverter is used for converting direct current output electricity of the storage battery into alternating current, the voltage stabilization control is more facilitated, and the testing accuracy of the thermoelectric module is further improved.
3) According to the testing device provided by the invention, the hot-end temperature control assembly comprises a first plane, the cold-end temperature control assembly comprises a second plane, the thermoelectric module is arranged between the first plane and the second plane, and the testing device further comprises a pressure adjusting device which is used for driving the first plane and/or the second plane to move so as to adjust the pressure of the first plane and the second plane on the thermoelectric module. The conventional testing device adopts fixed pressure testing, so that the fluctuation range of the thermal resistance of the contact surface is large, and the problem that the effective thermoelectric performance of the thermoelectric module cannot be accurately represented is solved.
4) The testing device provided by the invention also comprises a parallelism adjusting device which comprises a first moving plate, a second moving plate, a connecting bolt and a spring, wherein the first moving plate is movably connected with the adjusting screw rod through a bearing, the connecting bolt penetrates through a through hole arranged on the first moving plate and is in threaded connection with the second moving plate, the spring is sleeved on the connecting bolt and is positioned between the first moving plate and the second moving plate, and the lower end of the second moving plate is connected with a hot end temperature control assembly. The flatness of the contact surface is adjusted through the parallelism adjusting device, multipoint adjustment is adopted, the adjustable range is large, pressure balance is guaranteed, and the testing precision of the thermoelectric module is further improved.
5) According to the testing device provided by the invention, the heat insulation plates are respectively arranged between the second moving plate and the hot end temperature control assembly, between the support frame and the cold end temperature assembly and between the first plane and the second plane, so that the thermoelectric module is insulated, heat leakage is prevented, and the testing precision is improved.
6) The testing device provided by the invention comprises a display device, an electrical performance testing unit and a thermal efficiency calculating unit, so that the thermal efficiency of the thermoelectric module can be obtained, the thermal efficiency is used as an important standard for measuring the energy utilization rate, the calculating unit collects data of the electrical performance testing unit, and the data are calculated and produced in real time, so that the accuracy is higher. The testing device also comprises a display device which is electrically connected with the electrical performance testing unit to display the electrical performance parameters and the thermal efficiency, so that the parameters and the thermal efficiency are visually displayed in real time, and a tester can conveniently observe and record real-time results.
Drawings
In order to more clearly illustrate the embodiments of the present invention or the technical solutions in the prior art, the drawings used in the description of the embodiments or the prior art will be briefly described below, and it is obvious that the drawings in the following description are some embodiments of the present invention, and other drawings can be obtained by those skilled in the art without creative efforts.
FIG. 1 is a block diagram of a schematic configuration of a test apparatus for a thermoelectric module according to some embodiments of the present invention.
FIG. 2 is a schematic diagram of a test apparatus for a thermoelectric module according to some embodiments of the present invention.
Description of reference numerals:
2-a thermoelectric module; 41-cold end temperature control component; 42-hot end temperature control component; 43-a heat insulation plate; 462-adjusting screw; 463-parallelism adjusting means; 4631 — a first moving plate; 4632-a second moving plate; 4633-connecting bolts; 4634-a spring; 47-a support frame; 481-Pulley.
Detailed Description
The technical solutions of the present invention will be described clearly and completely with reference to the accompanying drawings, and it should be understood that the described embodiments are some examples of the present invention, but not all embodiments. All other embodiments, which can be obtained by a person skilled in the art without any inventive step based on the embodiments of the present invention, are within the scope of the present invention. In addition, the technical features involved in the different embodiments of the present invention described below may be combined with each other as long as they do not conflict with each other.
When testing thermoelectric module electricity performance, often set up hot end subassembly and cold junction subassembly, thermoelectric module's one end and hot end subassembly butt contact, the other end and cold junction subassembly butt contact to form the temperature difference at thermoelectric module's both ends, produce the electromotive force under Seebeck Effect (Seebeck Effect). The cold junction subassembly can generally adopt the water-cooling, also can adopt the liquid nitrogen for producing great temperature difference, and the hot junction subassembly is in the test for the convenience of temperature regulation and control and convenient to use, generally adopts electric heating element, because thermoelectric module's capability test needs higher measuring accuracy, consequently need consider multiple influence factor when the test. The inventor researches and discovers that the pressure of the cold end and the hot end to the thermoelectric module, the parallelism of the contact surface and the heat insulation capability of the testing device influence the electrical performance test of the thermoelectric module, and meanwhile, in further research, the voltage stability of the hot end component also causes great difference of test results, for example, an energy storage battery is adopted to supply power to the hot end component, and when the voltage fluctuates, the output power, the current and the like of the tested thermoelectric module fluctuate, and the test precision is influenced. The present invention is based on the idea that a test device for thermoelectric modules is further improved, and the test device according to some embodiments of the present invention is shown in fig. 1 and 2.
As shown in fig. 1, in some embodiments, the testing apparatus for a thermoelectric module provided by the present invention includes a temperature control unit and a power supply unit, the temperature control unit includes a cold-end temperature control component 41 and a hot-end temperature control component 42, the cold-end temperature control component 41 may adopt a cold-end device commonly used for water cooling, and preferably, in some embodiments, the cold-end temperature control component 41 adopts liquid nitrogen for refrigeration, according to the research of professor wanna of china academy of sciences, the liquid nitrogen has a better cooling effect on thermal strain of a semiconductor material, and the bow-shaped deformation error of the material is within a controllable range, so that the effect of adopting liquid nitrogen is better than the effect of water cooling. The power supply unit includes the battery, DC-to-AC converter and stabiliser, the battery is used for supplying power for testing arrangement, the DC-to-AC converter is connected with the battery electricity, thereby carry out the DC/AC conversion, the alternating current has better steady voltage effect for the direct current, the output and the stabiliser electricity of DC-to-AC converter are connected, hot junction temperature control component 42 is connected to the output of stabiliser, the stabiliser observes and controls input circuit, keep hot junction temperature control component 42's heating voltage stable, thereby improve thermoelectric module's test accuracy.
When testing thermoelectric module 2, thermoelectric module 2's both ends respectively with cold junction temperature control component 41 and hot junction temperature control component 42 butt contact to thermoelectric module 2 produces the electromotive force. The electrical performance testing unit is electrically connected to the thermoelectric module 2 for testing electrical performance parameters of the thermoelectric module 2 in the power generation mode, which may include, for example, the output power P of the thermoelectric module 2, the current I and the internal resistance R at the output power, and the cold-side heat flux Q of the thermoelectric modulec1. In the embodiment, the output power P, the current I and the internal resistance R can realize corresponding measurement functions by adopting sensors, and the cold end heat flux Qc1Using heat flow sensingThe measurement can be realized by those skilled in the art based on the above disclosure and with the knowledge of the related art, and will not be described herein.
In some embodiments, the testing apparatus of the present invention further comprises a thermal efficiency calculation unit for calculating the thermal efficiency of the thermoelectric module 2. It should be noted that the thermoelectric efficiency is an important standard for measuring the energy utilization rate, the higher the thermoelectric efficiency is, the higher the energy utilization rate is, and the thermoelectric efficiency can directly reflect the performance of the thermoelectric module 2, and the testing apparatus of the present invention can directly obtain the thermoelectric conversion efficiency through the thermal efficiency calculating unit. The thermal efficiency calculating unit collects the electrical performance parameters measured by the electrical performance testing unit, and the thermal efficiency is defined as the ratio of the output power to the hot end heat flux and can be expressed as:
Figure BDA0002117425190000061
where eta represents the thermal efficiency, P represents the output power, Qc1Represents cold-end heat flux, I represents current, and R represents internal resistance. In the present embodiment, cold end heat flux Q is utilizedc1And the heat efficiency is calculated, the cold end heat flux measurement effect is better, and the applicability of the hot end relative to a temperature window is poor.
In this embodiment, the testing device further includes a display device, the display device is electrically connected to the electrical performance testing unit and the thermal efficiency calculating unit, and is configured to display the electrical performance parameters and the thermal efficiency of the thermoelectric module 2, and the display device may be, for example, a display panel disposed on the testing device, and is configured to visually display the parameters and the thermal efficiency in real time, so that a tester can conveniently observe and record real-time results.
As shown in FIG. 2, in some embodiments, the present invention provides a testing device that includes a support frame 47, the support frame 47 serving as the main load-bearing structure of the testing device. Cold junction temperature control component 41 sets up in support frame 47 lower part position, and cold junction temperature control component 41's upper surface forms the second plane, and hot junction temperature control component 42 sets up in cold junction temperature control component 41's top, and hot junction temperature control component 42's lower surface forms first plane. When testing the thermoelectric module 2, the thermoelectric module 2 is arranged between the first plane and the second plane, the upper surface and the lower surface of the thermoelectric module 2 are respectively in butt contact with the second plane and the first plane, the contact surface of the first plane and the thermoelectric module 2 forms a hot end, and the contact surface of the second plane and the thermoelectric module 2 forms a cold end, so that temperature difference is generated.
In some embodiments, the testing apparatus further comprises a parallelism adjustment device 463, and the parallelism adjustment device 463 is used for adjusting the flatness of the contact surface of hot-side temperature control assembly 42 and thermoelectric module 2. The inventor tests that the flatness of the contact surface can influence the testing precision of the thermoelectric module 2, and the temperature difference is large only because the thermal resistance of the interface is large due to the air gap of the contact surface, so that the electrical property of the thermoelectric module 2 cannot be accurately represented. Therefore, in the present embodiment, the test apparatus is provided with the parallelism adjusting apparatus 463, and as shown in fig. 2, the parallelism adjusting apparatus 463 includes a first moving plate 4631, a second moving plate 4632, a connecting bolt 4633, and a spring 4634. The first moving plate 4631 is provided with a plurality of through holes, for example, the first moving plate 4631 is a rectangular plate, four through holes are provided in the area close to the corners of the rectangle, four connecting bolts 4633 pass through the through holes, the size of the screw of the connecting bolt 4633 is slightly smaller than that of the through holes, and the size of the nut is larger than that of the through holes. The second moving plate 4632 is provided with a threaded hole corresponding to the through hole, and the threaded hole is matched with the connecting bolt 4633, i.e. the four connecting bolts 4633 pass through the through hole to be screwed with the second moving plate 4632. The lower end of the second moving plate 4632 is fixedly connected to the hot-end temperature control assembly 42. The spring 4634 is sleeved on the connecting bolt 4633 and located between the first moving plate 4631 and the second moving plate 4632, and the spring 4634 is in a compressed state. When the flatness of the contact surface between the hot-side temperature control element 42 and the thermoelectric module 2 is adjusted, the distance between the first moving plate 4631 and the second moving plate 4632 can be changed by adjusting the connecting bolt 4633 at the corresponding position, so as to change the parallelism between the hot-side temperature control element 42 and the thermoelectric module 2.
In some embodiments, the testing device further comprises a pressure adjustment device for adjusting the pressure of the first and second planes to the clamping of the thermoelectric module 2. In most of the existing test devices, the test device,the thermoelectric module 2 is tested by adopting fixed clamping pressure, the inventor researches and discovers that the test results of the thermoelectric module 2 are different under different pressures, and the inventor further researches and discovers that when the pressure is within a certain threshold value, the curve of the output power is relatively flat, for example, in one experiment, when the pressure is selected to be 4800-12000 kg/m2When the output power of the thermoelectric module 2 is stabilized. Therefore, the pressure adjusting device is arranged in the testing device, so that the pressure can be adjusted in the testing process, and the testing precision is ensured. As shown in fig. 2, the pressure adjusting device includes an adjusting screw 462, a threaded through hole is formed in an upper supporting plate of the supporting frame 47, the adjusting screw 462 is screwed with the supporting frame 47 through the threaded through hole, and a lower end of the adjusting screw 462 abuts against the first moving plate 4631, so that the first moving plate 4631 drives the hot end temperature control assembly 42 below to increase or decrease the clamping pressure on the thermoelectric module 2 by rotating the adjusting screw 462. In the present embodiment, the first moving plate 4631 and the adjustment screw 462 are coupled by a bearing, and the frictional force of the adjustment screw 462 against the first moving plate 4631 is reduced.
In some embodiments, heat insulation plates 43 are disposed between the second moving plate 4632 and the hot-end temperature control assembly 42, between the bottom plate of the supporting frame 47 and the cold-end temperature control assembly 41, and between the first plane and the second plane, and the heat insulation plates 43 insulate the testing device, prevent heat leakage, and improve testing accuracy. In some embodiments, the insulation panel 43 may be selected from high infrared reflective insulation materials, such as a multi-layer composite of aluminum foil and fiberglass cloth, with the aluminum foil alternating with the fiberglass cloth. The metal foil has a high infrared reflection coefficient, the influence of infrared radiation heat leakage can be reduced to a negligible degree after a plurality of laminated layers are calculated, the thermal conductivity of the glass fiber is low, and air is spaced between the glass fiber and the glass fiber, so that the influence of heat conduction heat leakage can be obviously reduced.
The structure of the test apparatus of the present invention is explained above, and the principle of the test apparatus of the present invention is explained below.
When testing the thermoelectric module 2, the thermoelectric module 2 is disposed between a first plane and a second plane formed by the hot-side temperature control assembly 42 and the cold-side temperature control assembly 41, the adjusting screw 462 is rotated to adjust the testing pressure of the thermoelectric module 2 to a proper range, the parallelism between the first plane and the thermoelectric module is tested by, for example, an optical fiber, and the parallelism is adjusted by adjusting the connecting bolt 4633 at a corresponding position, so that the testing preparation of the thermoelectric module 2 is completed. The temperature of the cold-end temperature control assembly 41 and the hot-end temperature control assembly 42 is controlled through the cold-end device and the hot-end device, so that the thermoelectric module 2 is in a power generation state, the thermoelectric performance testing unit tests the electrical performance parameters of the thermoelectric module 2 in the power generation state, the thermal efficiency calculating unit calculates the thermoelectric conversion efficiency of the thermoelectric module 2 in real time based on the parameters of the electrical performance testing unit, and meanwhile, the electrical performance parameters and the thermoelectric conversion efficiency are displayed on the display device in real time. The performance of the thermoelectric module can be accurately measured by the testing device.
It should be understood that the above embodiments are only examples for clearly illustrating the present invention, and are not intended to limit the present invention. Other variations and modifications will be apparent to persons skilled in the art in light of the above description. And are neither required nor exhaustive of all embodiments. And obvious variations or modifications therefrom are within the scope of the invention.

Claims (10)

1. A testing apparatus for a thermoelectric module, comprising:
the temperature control unit is used for providing temperature difference for the thermoelectric module (2) so as to enable the thermoelectric module (2) to be in a power generation state; and
the power supply unit is used for supplying power to the temperature control unit and comprises a power supply assembly and a voltage stabilizer connected with the power supply assembly, and the output end of the voltage stabilizer is connected with the temperature control unit.
2. The test device of claim 1,
the power supply assembly comprises a storage battery and an inverter connected with the storage battery, and the output end of the inverter is connected with the voltage stabilizer.
3. The test device of claim 1,
the temperature control unit comprises a hot end temperature control assembly (42) and a cold end temperature control assembly (41), the thermoelectric module (2) is arranged between the hot end temperature control assembly (42) and the cold end temperature control assembly (41), and the output end of the voltage stabilizer is at least connected with the hot end temperature control assembly (42).
4. The test device of claim 3,
the hot-end temperature control assembly (42) comprises a first plane, the cold-end temperature control assembly (41) comprises a second plane, and the thermoelectric module (2) is arranged between the first plane and the second plane;
the test device further comprises:
and the pressure adjusting device is used for driving the first plane and/or the second plane to move so as to adjust the pressure of the first plane and the second plane to the thermoelectric module.
5. The testing device of claim 4, further comprising:
the cold-end temperature control assembly (41) is arranged at the lower part of the support frame (47), the upper surface of the cold-end temperature control assembly forms the second plane, the hot-end temperature control assembly (42) is arranged above the cold-end temperature control assembly (41), the lower surface of the hot-end temperature control assembly forms the first plane, and the thermoelectric module (2) is horizontally arranged between the first plane and the second plane;
the pressure adjusting device comprises an adjusting screw rod (462), a threaded through hole is formed in the upper end of the supporting frame (47), the adjusting screw rod (462) is in threaded connection with the supporting frame (47) through the threaded through hole, one end of the adjusting screw rod is connected with the hot-end temperature control assembly (42), and the adjusting screw rod (462) is screwed in/out of the threaded through hole to adjust the pressure of the second plane to the thermoelectric module (2).
6. The testing device of claim 5, further comprising:
the parallelism adjusting device (463) comprises a first moving plate (4631), a second moving plate (4632), a connecting bolt (4633) and a spring (4634), wherein the first moving plate (4631) is movably connected with the adjusting screw (462) through a bearing, the connecting bolt (4633) penetrates through a through hole formed in the first moving plate (4631) to be in threaded connection with the second moving plate (4632), the spring (4634) is sleeved on the connecting bolt (4633) and located between the first moving plate (4631) and the second moving plate (4632), and the lower end of the second moving plate (4632) is connected with the hot-end temperature control assembly (42).
7. The test device of claim 6,
and heat insulation plates (43) are arranged between the second moving plate (4632) and the hot-end temperature control assembly (42), between the support frame (47) and the cold-end temperature control assembly (41) and between the first plane and the second plane.
8. The test device of any one of claims 1 to 7, further comprising:
an electrical performance testing unit electrically connected with the thermoelectric module (2) to test electrical performance parameters of the thermoelectric module (2); and
and the thermal efficiency calculating unit is used for calculating the thermal efficiency of the thermoelectric module (2) according to the electrical performance parameters.
9. The testing device of claim 8, further comprising:
and the display device is electrically connected with the electrical performance testing unit so as to display the electrical performance parameters and the thermal efficiency.
10. The test device of claim 8, wherein the electrical performance parameter comprises:
the output power of the thermoelectric module, the current and internal resistance at that output power, and the cold side heat flux of the thermoelectric module.
CN201910595192.8A 2019-07-03 2019-07-03 Testing device for thermoelectric module Pending CN112180184A (en)

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