CN110231531A - A kind of test device and test method of thermo-electric device thermoelectricity capability - Google Patents
A kind of test device and test method of thermo-electric device thermoelectricity capability Download PDFInfo
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- CN110231531A CN110231531A CN201910622709.8A CN201910622709A CN110231531A CN 110231531 A CN110231531 A CN 110231531A CN 201910622709 A CN201910622709 A CN 201910622709A CN 110231531 A CN110231531 A CN 110231531A
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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
Abstract
The present invention relates to thermo-electric device technical field of performance test more particularly to a kind of test device and test method of thermo-electric device thermoelectricity capability, test device includes thermo-electric device, test cushion block, water-cooled jacket, water-cooled plate, temperature regulatory component, test circuit；Thermo-electric device to be detected is fixed in the water-cooled jacket；The thermo-electric device is equipped with heating component, and the heating component and the water cooling set upper side are tightly connected, and the heating component heats thermo-electric device, and thermo-electric device is made to reach requirement of experiment temperature；The thermo-electric device bottom surface is fixedly connected with the test cushion block, and the test cushion block bottom surface is fixedly connected with the water-cooled plate；The present invention realizes thermoelectricity capability test of the thermo-electric device in high temperature anaerobic environment；The hot and cold side for effectively keeping the formation temperature of thermo-electric device stable by the setting of temperature regulatory component and water-cooled plate；Temperature regulatory component can carry out monitoring temperature and adjusting to thermo-electric device in time, test temperature needed for enabling thermo-electric device to reach experiment.
Description
Technical field
The present invention relates to thermo-electric device technical field of performance test more particularly to a kind of tests of thermo-electric device thermoelectricity capability
Device and test method.
Background technique
The concern more and more extensive by all circles of the thermoelectric generation technology generation technology environmentally protective as one kind, and
It is successfully applied in the fields such as space flight and aviation, communications and transportation and thermal power generation.The core of thermoelectric generation technology is exactly thermoelectricity
Device has a lot of research work to carry out thermoelectricity output performance of thermo-electric device under the conditions of low temperature environment and Low Temperature Difference at present
Experimental evaluation, and apply the experimental study of the generating efficiency under high temperature anaerobic environment also less thermo-electric device.
Because evaluating thermoelectricity capability of the thermo-electric device under high temperature anaerobic environment, need to remain stable for a long time
Big temperature gradient and oxygen-free environment, and due to the temperature of the cold and hot end surfaces of thermo-electric device it is difficult to ensure that uniform, hot and cold side temperature
The accurately controlling of degree, heat radiation and convective heat transfer such as are difficult to avoid cause to be easy to produce biggish test error when test at the factors.
Therefore, it is badly in need of a kind of device and survey that can carry out thermoelectricity capability test under high temperature anaerobic environment to thermo-electric device
Method for testing.
Summary of the invention
The purpose of the present invention is to propose to the test devices and test method of a kind of thermo-electric device thermoelectricity capability, to test heat
Thermoelectricity capability of the electrical part in high temperature anaerobic environment.
In order to solve the above-mentioned technical problems, the present invention provides a kind of test devices of thermo-electric device thermoelectricity capability, including
Thermo-electric device, test cushion block, water-cooled jacket, water-cooled plate, temperature regulatory component, test circuit；
The thermo-electric device is fixed in the water-cooled jacket；
Heating component is equipped with above the thermo-electric device, the heating component and the water cooling set upper side are tightly connected, institute
It states heating component to heat the thermo-electric device, the thermo-electric device is made to reach requirement of experiment temperature；
The thermo-electric device bottom surface is fixedly connected with the test cushion block, and the test cushion block bottom surface and the water-cooled plate are solid
Fixed connection, the water-cooled plate and the water-cooled jacket lower end are tightly connected, and the water-cooled plate absorbs the temperature of the test cushion block, are made
The test cushion block and the thermo-electric device upper and lower surface generate the temperature difference；
The water-cooled jacket is equipped with vacuum pump interface and inert gas inlet port, is connected to vacuum at the vacuum pump interface
It pumps, is connected to inert gas at the inert gas inlet port and is pumped into；It is sealed in the water cooling set upper side by the heating component
Lower end under the water-cooled plate air-proof condition, is started the vacuum pump and inert gas is pumped into pump and makes to form nothing in the water-cooled jacket
Oxygen environment；
The temperature regulatory component is connect by thermocouple with the heating component, thermo-electric device, test cushion block, and institute is monitored
State heating component, thermo-electric device, the temperature for testing cushion block；
The temperature regulatory component can adjust the temperature of the heating component, so that the temperature of thermo-electric device reaches experiment and surveys
Try temperature；
The upper and lower surface of the thermo-electric device is connected to the test circuit of the performance parameter to measure thermo-electric device
In.
Further, the heating component includes quartz lamp, light transmitting sheet, calandria；
The light transmitting sheet is fixed in the water-cooled jacket, and the light transmitting sheet and the water-cooled jacket are tightly connected；
Calandria is equipped with below the light transmission flag, the calandria bottom surface is fixed on the thermo-electric device top surface；
Quartz lamp is equipped with above the water-cooled jacket, the high temperature ray that the quartz lamp is issued is uniformly distributed extremely through the light transmitting sheet
The calandria, the calandria uniformly transfer temperature to the thermo-electric device.
Further, the calandria is graphite heating body.
Further, the light transmitting sheet is sapphire sheet.
Further, the light transmitting sheet is located at below the quartz lamp at 15mm.
Further, insulating ceramic film is equipped between the calandria and the thermo-electric device, in the test cushion block and institute
It states and is equipped with insulating ceramic film between thermo-electric device.
Further, the temperature regulatory component includes data collector, computer, quartzy lamp controller；
Thermocouple there are four being set on the data collector, and four thermocouples are connected to the graphite heating body
Upper surface, the lower surface for testing cushion block and two insulating ceramics on pieces；
When the data collector detects that the temperature on the thermo-electric device is not up to requirement of experiment, the data are adopted
Temperature information is transferred to the quartzy lamp controller by the computer by storage, and the quartz lamp controller is to the quartz
The output power size of lamp is regulated and controled, so that the heat of the thermo-electric device, cold junction temperature reach requirement of experiment and realize stable state.
Further, the water-cooled jacket side wall is equipped with cold water circulation interlayer, and the water-cooled jacket is equipped with and is through to the cold water
The cold water inlet and cooling water outlet of circulation interlayer.
Further, test circuit includes measuring resistance, rheostat, voltmeter, voltmeter, the measuring resistance, rheostat
Series circuit, the first voltage table testing standard resistance two in parallel with measuring resistance are formed with the upper and lower end faces of thermo-electric device
The voltage at end, the second voltage table and varistors in parallel test rheostat both end voltage.
On the other hand, the invention also includes a kind of test devices of thermo-electric device thermoelectricity capability in big temperature gradient anaerobic ring
To the test method of thermo-electric device thermoelectricity capability under border, include the following steps:
1) before testing, demarcate following parameter: the resistance of returning electrical leads is denoted as rz, the resistance value R1 of measuring resistance, testing cushion
Surface area S, thickness d and the thermal conductivity k of block；
2) thermo-electric device, measuring resistance, rheostat, first voltage table, second voltage table are accessed into circuit, using voltammetry
It is tested；
3) experimental provision is placed on the experiment porch put up and is tested, before radiant heating, water-cooled jacket is carried out
Water-cooled process injects inert gas and vacuumize process, keeps oxygen-free environment required for testing；
4) it opens heating component to be heated, be wanted if data collector detects that the temperature on thermo-electric device is not up to tested
It asks, data collector passes through computer for temperature information quartz lamp controller, output power of the quartzy lamp controller to quartz lamp
Size is regulated and controled, so that the heat of thermo-electric device, cold junction temperature reach requirement of experiment and realize stable state；
5) when thermo-electric device is in stable hot environment and upper and lower surface there are when the stable temperature difference, adjustment is rheostatic
Resistance value after circuit to be tested is again stable, while recording the value U1 of first voltage table, the value U2 of second voltage table, test cushion block
Temperature T1, T2 of upper and lower surfaces.Then electric current in circuitThe output voltage U=U of thermo-electric device2+I(rz+R1), thermoelectricity device
The output power P=UI of part, the heat of thermo-electric device low-temperature end dischargeThe conversion efficiency of thermoelectric of thermo-electric device
Implement the invention has the following beneficial effects:
1. realizing the thermoelectricity capability test to thermo-electric device in high temperature anaerobic environment；
2. effectively making stable cold and hot of the formation temperature of thermo-electric device by the setting of temperature regulatory component and water-cooled plate
End；
3. temperature regulatory component can carry out monitoring temperature and adjusting to thermo-electric device in time, thermo-electric device is enable to reach experiment
Required test temperature；
4. the test circuit being connect by the top and bottom with thermo-electric device can effectively test out the items heat of thermo-electric device
Unit for electrical property parameters.
Detailed description of the invention
Fig. 1 is structural schematic diagram of the invention；
Fig. 2 is the attachment structure schematic diagram of test circuit of the invention.
In figure:
1- quartz lamp；2- light transmitting sheet；3- calandria；4- insulating ceramic film；5- thermo-electric device；6- tests cushion block；7- water cooling
Copper sheathing；8- water-cooled plate；9- inert gas entrance；10- vacuum pump interface；11- quartz lamp controller；12- data collector；13-
Computer；14- measuring resistance；15- rheostat；16- first voltage table；17- second voltage table.
Specific embodiment
In order to make the object, technical scheme and advantages of the embodiment of the invention clearer, below in conjunction with the embodiment of the present invention
In attached drawing, technical scheme in the embodiment of the invention is clearly and completely described, it is clear that described embodiment is
A part of the embodiments of the present invention, instead of all the embodiments.Based on the embodiments of the present invention, ordinary skill people
Member's every other embodiment obtained without making creative work, shall fall within the protection scope of the present invention.
Embodiment one
The embodiment of the invention provides a kind of test devices of thermo-electric device thermoelectricity capability, including thermo-electric device 5, testing cushion
Block 6, water-cooled jacket 7, water-cooled plate 8, temperature regulatory component, test circuit.
Thermo-electric device 5 is fixed in water-cooled jacket 7, and heating component is equipped with above thermo-electric device 5, and heating component is by thermo-electric device
5 are heated, and thermo-electric device 5 is made to be in hot environment, and heating component and water-cooled jacket 7 are tightly connected.
5 bottom surface of thermo-electric device is fixedly connected with test cushion block 6, and temperature is passed to test cushion block 6, tests 6 bottom of cushion block
Face is fixedly connected with water-cooled plate 8, and water-cooled plate 8 absorbs the temperature of the test cushion block 6, makes to test cushion block 6 and about 5 thermo-electric device
Surface forms hot and cold side, and water-cooled plate 8 and water-cooled jacket 7 are tightly connected, and since heating component is also tightly connected with water-cooled jacket 7, can make
Sealing space is formed in water-cooled jacket 7.
Water-cooled jacket 7 is equipped with vacuum pump interface 10 and inert gas inlet port 9, and vacuum pump interface 10 is controlled to a vacuum pump,
Inert gas inlet port 9 and inert gas are pumped into connection, can be sealed by space mud or sealant in junction, guarantee connection
The airtightness at place；It is heated component sealing in 7 upper end of water-cooled jacket, lower end is water cooled under 8 air-proof condition of plate, starts vacuum pump and lazy
Property gas be pumped into, extract and be pumped into air in water-cooled jacket 7 out inert gas, guarantee interior formation nothing in 7 sealing space of water-cooled jacket
Oxygen environment.
Temperature regulatory component is connect by thermocouple with heating component, thermo-electric device 5, test cushion block 6, to monitor heating
Component, thermo-electric device 5, the temperature conditions for testing cushion block 6, are recorded to temperature and are adjusted the temperature of heating component.
Temperature regulatory component can adjust the temperature of heating component, so that the temperature of thermo-electric device 5 reaches experiment test temperature.
The top surface of thermo-electric device 5, bottom surface are connected in test circuit, property of the circuit to measure thermo-electric device 5 is tested
It can parameter.
It is equipped with insulating ceramic film 4 between test cushion block 6 and thermo-electric device 5, is equipped between calandria 3 and thermo-electric device 5 exhausted
Edge potsherd 4, insulating ceramic film 4 can make to test between cushion block 6 and thermo-electric device 5 and keep between calandria 3 and thermo-electric device 5
Insulation avoids influencing measuring circuit because conductive between test cushion block 6 and thermo-electric device 5 and between calandria 3 and thermo-electric device 5
The accuracy of data when test.
In the present embodiment, 7 side wall of water-cooled jacket be equipped with cold water circulate interlayer, and on water-cooled jacket 7 be equipped with and cold water circulate
The cold water inlet and cooling water outlet of interlayer connection, cooling water flow into the cold water circulation interlayer in water-cooled jacket 7 simultaneously from water cooling entrance
It is flowed out from cooling water outlet, realizes and cool down to 7 side wall of water-cooled jacket.
In a preferred embodiment, heating component includes quartz lamp 1, light transmitting sheet 2, calandria 3, quartzy lamp controller
11；Light transmitting sheet 2 is fixed in water-cooled jacket 7, and light transmitting sheet 2 and water-cooled jacket 7 are tightly connected；Calandria is equipped with below light transmission flag 2
3,3 bottom surface of calandria is fixed on 5 top surface of thermo-electric device；Quartz lamp 1 is equipped with above water-cooled jacket 7, it is preferred that quartz lamp
1 is located at 2 top 15mm of light transmitting sheet, and the high temperature ray that quartz lamp 1 is issued is uniformly distributed to calandria 3, heating through the light transmitting sheet 2
Body 3 uniformly transfers temperature to thermo-electric device 5, heats to thermo-electric device 5；Quartzy lamp controller 11 is electrically connected with quartz lamp 1
It connects, quartzy lamp controller 11 adjusts the temperature for the high temperature ray that quartz lamp 1 is distributed, and changes the temperature of thermo-electric device 5.
Temperature regulatory component includes data collector 12, computer 13, sets that there are four thermocouples on data collector 12, and
Four thermocouples are connected on upper surface, the lower surface for testing cushion block 6 and two insulating ceramic films 4 of calandria 3；Data
Collector 12 is electrically connected with the computer 13 for receiving temperature data, and computer 13 is electrically connected with quartzy lamp controller 11, and data are adopted
Temperature data is passed to computer 13 by storage 12, and computer 13 records temperature data；Heat is detected in data collector 12
When temperature on electrical part 5 is not up to requirement of experiment, temperature information is passed to quartz by computer 13 by data collector 12
Lamp controller 11, quartzy lamp controller 11 regulate and control the output power size of quartz lamp 1, so that thermo-electric device 5 is hot, cold
End temperature reaches requirement of experiment and realizes stable state.
Wherein, the thermocouple for being connected to 3 upper surface of calandria can test out the temperature of 3 upper surface of calandria；Connection
The temperature of upper and lower surface of the thermocouple to measure thermo-electric device 5 between two insulating ceramic films 4, and it is each by test circuit
The thermoelectric conversion performance of the thermo-electric device under the big temperature difference of thermo-electric device 5 is measured in the test of parameter；It is connected to test cushion block 6
Lower surface and the thermocouple on the insulating ceramic film 4 tested between cushion block 6 and thermo-electric device 5 can measure about 6 cushion block of test
The temperature on surface, to calculate the output hot-fluid of thermo-electric device 5 after temperature is stablized.
Test circuit is made of measuring resistance 14, rheostat 15, first voltage table 16, second voltage table 17, measuring resistance
14, rheostat 15 is composed in series with 5 upper and lower ends of thermo-electric device, the testing standard electricity in parallel with measuring resistance 14 of first voltage table 16
Hinder the voltage at 14 both ends, test rheostat 15 both end voltage in parallel with rheostat 15 of second voltage table 17, by measuring resistance
14 and 15 voltage value of rheostat record, the output voltage and output power of electric current in circuit, thermo-electric device 5, root can be measured
The heat and thermo-electric device of the discharge of 5 low-temperature end of thermo-electric device can also be calculated according to the temperature data of test 6 upper and lower ends of cushion block
Conversion efficiency of thermoelectric, realize the test to the thermoelectricity capability of thermo-electric device 5.
In the present embodiment, light transmitting sheet 2 can be the good sapphire sheet of translucency or ruby piece, herein not
It further limits, need to only guarantee that selected light transmitting sheet 2 has good translucency, quartz lamp 1 can be distributed
Hyperthermia radiation optical fiber is uniformly distributed to calandria 3.
In the present embodiment, calandria 3 is graphite heating body, and temperature uniformly can be passed to thermoelectricity device by graphite heating body
Part 5, and graphite heating body has excellent insulation characterisitic, avoids test circuit when testing thermo-electric device 5 because of calandria 3
Has Conductivity test data.
Before experiment, the test device outer surface of thermo-electric device thermoelectricity capability is cased with Thermal Insulating Ceramic Fibers, makes entirely to test
Device only remains with to be uncovered above light transmitting sheet 2, it is ensured that quartz lamp 1 can to 7 heating internal body 3 of water-cooled jacket heat while every
Thermal Ceramics fiber handles entire experimental provision and external insulation.
Embodiment two
The present embodiment two be a kind of thermo-electric device thermoelectricity capability test device under big temperature gradient oxygen-free environment to heat
The test method of electrical part thermoelectricity capability, this method can be, but not limited to fill using the test of thermo-electric device thermoelectricity capability above-mentioned
It sets, specifically, this method comprises the following steps:
1) before testing, demarcate following parameter: the resistance of returning electrical leads is denoted as rz, the resistance value R1 of measuring resistance, testing cushion
Surface area S, thickness d and the thermal conductivity k of block.
2) thermo-electric device 5, measuring resistance 14, rheostat 15, first voltage table 16, second voltage table 17 are accessed into circuit,
Measuring resistance 14, rheostat 15 and 5 upper and lower ends of thermo-electric device are composed in series, first voltage table 16 and the simultaneously translocation of measuring resistance 14
Try the voltage at 14 both ends of measuring resistance, test rheostat 15 both end voltage in parallel with rheostat 15 of second voltage table 17, using volt
Peace method tests the electric current in the output voltage, output power and circuit of thermo-electric device 5.
3) experimental provision is placed on the experiment porch put up and is tested, before radiant heating, water-cooled jacket 7 is carried out
Water-cooled process, the cold water circulation interlayer for flowing into cooling water in water-cooled jacket 7 from water cooling entrance are simultaneously flowed out from cooling water outlet, realization pair
The cooling of 7 side wall of water-cooled jacket, starts vacuum pump and inert gas is pumped into, and keeps oxygen-free environment required for testing.
4) it opens heating component to be heated, if data collector 12 detects that the temperature on thermo-electric device 5 is not up in fact
Requirement is tested, data collector 12 passes through computer 13 for temperature information quartz lamp controller 11,11 pairs of quartz of quartzy lamp controller
The output power size of lamp 1 is regulated and controled, so that the heat of thermo-electric device 5, cold junction temperature reach requirement of experiment and realize stable state.
5) when thermo-electric device 5 is in stable hot environment and upper and lower surface there are when the stable temperature difference, rheostat is adjusted
15 resistance value, after circuit to be tested is again stable, while record the value U1 of first voltage table 16, second voltage table 17 value U2,
Test temperature T1, T2 of 6 upper and lower surfaces of cushion block.Then electric current in circuitThe output voltage U=U of thermo-electric device 52+I(rz
+R1), the output power P=UI of thermo-electric device 5, the heat of 5 low-temperature end of thermo-electric device dischargeThermo-electric device 5
Conversion efficiency of thermoelectric
Finally, it should be noted that the above embodiments are merely illustrative of the technical solutions of the present invention, rather than its limitations；Although
Present invention has been described in detail with reference to the aforementioned embodiments, those skilled in the art should understand that: it still may be used
To modify the technical solutions described in the foregoing embodiments or equivalent replacement of some of the technical features；
And these are modified or replaceed, the spirit for technical solution of various embodiments of the present invention that it does not separate the essence of the corresponding technical solution.
Claims (10)
1. a kind of test device of thermo-electric device thermoelectricity capability, it is characterised in that: including testing cushion block (6), water-cooled jacket (7), water
Cold plate (8), temperature regulatory component, test circuit；
Thermo-electric device (5) to be detected is fixed in the water-cooled jacket (7)；
Heating component is equipped with above the thermo-electric device (5), the heating component and the water-cooled jacket (7) upper end are tightly connected,
The heating component heats the thermo-electric device (5), and the thermo-electric device (5) is made to reach requirement of experiment temperature；
Thermo-electric device (5) bottom surface is fixedly connected with the test cushion block (6), the test cushion block (6) bottom surface and the water
Cold plate (8) is fixedly connected, and the water-cooled plate (8) and the water-cooled jacket (7) lower end are tightly connected, and the water-cooled plate (8) absorbs institute
The temperature for stating test cushion block (6) makes the test cushion block (6) and the thermo-electric device (5) upper and lower surface generate the temperature difference；
The water-cooled jacket (7) is equipped with vacuum pump interface (10) and inert gas inlet port (9), at the vacuum pump interface (10)
It is connected to vacuum pump, inert gas is connected at the inert gas inlet port (9) and is pumped into；In the water-cooled jacket (7) upper end by institute
It states heating component sealing lower end and under the water-cooled plate (8) air-proof condition, is started the vacuum pump and inert gas is pumped into pump and makes
Oxygen-free environment is formed in the water-cooled jacket (7)；
The temperature regulatory component is connect by thermocouple with the heating component, thermo-electric device (5), test cushion block (6), is monitored
The heating component, thermo-electric device (5), the temperature for testing cushion block (6)；
The temperature regulatory component can adjust the temperature of the heating component, so that the temperature of thermo-electric device (5) reaches experiment and surveys
Try temperature；
The upper and lower surface of the thermo-electric device (5) is connected to the test electricity to the performance parameter for measuring thermo-electric device (5)
Lu Zhong.
2. the test device of thermo-electric device thermoelectricity capability according to claim 1, it is characterised in that: the heating component packet
Include quartz lamp (1), light transmitting sheet (2), calandria (3)；
The light transmitting sheet (2) is fixed in the water-cooled jacket (7), and the light transmitting sheet (2) and the water-cooled jacket (7) sealing connect
It connects；
Calandria (3) are equipped with below the light transmission flag (2), calandria (3) bottom surface is fixed on the thermo-electric device (5) top
On face；
It is equipped with quartz lamp (1) above the water-cooled jacket (7), the high temperature ray that the quartz lamp (1) is issued is through the light transmitting sheet
(2) uniformly distributed to the calandria (3), the calandria (3), which uniformly transfers temperature, gives the thermo-electric device (5).
3. the test device of thermo-electric device thermoelectricity capability according to claim 2, it is characterised in that: the calandria (3)
For graphite heating body.
4. the test device of thermo-electric device thermoelectricity capability according to claim 2, it is characterised in that: the light transmitting sheet (2)
For sapphire sheet.
5. the test device of thermo-electric device thermoelectricity capability according to claim 2, it is characterised in that: the light transmitting sheet (2)
At 15mm below the quartz lamp (1).
6. the test device of thermo-electric device thermoelectricity capability according to claim 2, it is characterised in that: in the calandria
(3) insulating ceramic film (4) are equipped between the thermo-electric device (5), between the test cushion block (6) and the thermo-electric device (5)
Equipped with insulating ceramic film (4).
7. the test device of thermo-electric device thermoelectricity capability according to claim 6, it is characterised in that: the temperature regulation group
Part includes data collector (12), computer (13), quartzy lamp controller (11)；
Thermocouple there are four being set on the data collector (12), and four thermocouples are connected to the graphite heating body
(3) on the lower surface of upper surface, test cushion block (6) and two insulating ceramic films (4)；
When the data collector (12) detects that the temperature on the thermo-electric device (5) is not up to requirement of experiment, the number
Temperature information is transferred to by the quartzy lamp controller (11), the quartz lamp by the computer (13) according to collector (12)
Controller (11) regulates and controls the output power size of the quartz lamp (1), so that heat, the cold end of the thermo-electric device (5)
Temperature reaches requirement of experiment and realizes stable state.
8. the test device of thermo-electric device thermoelectricity capability according to claim 1, it is characterised in that: the water-cooled jacket (7)
Side wall is equipped with cold water and circulates interlayer, the water-cooled jacket (7) be equipped be through to the cold water inlet of cold water circulation interlayer with it is cold
Water out.
9. the test device of thermo-electric device thermoelectricity capability according to claim 1, it is characterised in that: test circuit includes mark
Quasi- resistance (14), rheostat (15), voltmeter (16), voltmeter (17), the measuring resistance (14), rheostat (15) and thermoelectricity
The upper and lower end faces of device (5) form series circuit, first voltage table (16) testing standard in parallel with measuring resistance (14)
The voltage at resistance (14) both ends, second voltage table (17) test rheostat (15) both end voltage in parallel with rheostat (15).
10. a kind of test device of thermo-electric device thermoelectricity capability is under big temperature gradient oxygen-free environment to thermo-electric device thermoelectricity capability
Test method, which comprises the steps of:
1) before testing, demarcate following parameter: the resistance of returning electrical leads is denoted as rz, and the resistance value R1 of measuring resistance tests cushion block
Surface area S, thickness d and thermal conductivity k；
2) thermo-electric device (5), measuring resistance (14), rheostat (15), first voltage table (16), second voltage table (17) are accessed
Circuit is tested using voltammetry；
3) experimental provision is placed on the experiment porch put up and is tested, before radiant heating, water is carried out to water-cooled jacket (7)
Inert gas and vacuumize process are injected in cold treatment, keep oxygen-free environment required for testing；
4) it opens heating component to be heated, if data collector (12) detects that the temperature on thermo-electric device (5) is not up in fact
Requirement is tested, temperature information is passed to quartzy lamp controller (11), quartz lamp control by computer (13) by data collector (12)
Device (11) processed regulates and controls the output power size of quartz lamp (1), so that heat, the cold junction temperature of thermo-electric device (5) reach real
It tests requirement and realizes stable state；
5) when thermo-electric device (5) are in stable hot environment and upper and lower surface there are when the stable temperature difference, rheostat is adjusted
(15) resistance value after circuit to be tested is again stable, while recording the value U1 of first voltage table (16), second voltage table (17)
Value U2, temperature T1, T2 for testing cushion block (6) upper and lower surfaces.Then electric current in circuitThe output voltage U of thermo-electric device (5)
=U2+I(rz+R1), the output power P=UI of thermo-electric device (5), the heat of thermo-electric device (5) low-temperature end dischargeThe conversion efficiency of thermoelectric of thermo-electric device (5)
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| Publication number | Priority date | Publication date | Assignee | Title |
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| CN111796158A (en) * | 2020-07-15 | 2020-10-20 | 中国原子能科学研究院 | Heating test device for thermoelectric converter |
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