Thermoelectric device performance test equipment

Abstract

The utility model relates to the technical field of thermoelectric device performance testing, and discloses thermoelectric device performance testing equipment which comprises a pressing device, a cold surface testing device and a hot surface testing device, the cold surface testing device is arranged on the pressing device, the pressing device is used for driving the cold surface testing device to ascend or descend, and the hot surface testing device is arranged on the pressing device. The cold surface testing device and the hot surface testing device are correspondingly arranged up and down; the cold surface testing device comprises a temperature difference testing assembly and a refrigerating capacity testing assembly, the temperature difference testing assembly and the refrigerating capacity testing assembly are respectively used for being in contact with cold surfaces of different products and monitoring the temperature of the cold surfaces, the hot surface testing device is used for placing a plurality of products, and the hot surface testing device is used for being in contact with hot surfaces of different products and monitoring the temperature of the hot surfaces. Therefore, automatic testing is achieved, manpower input is reduced, cost is saved, meanwhile, testing accuracy is improved, synchronous testing of temperature difference testing and refrigerating capacity testing is achieved, testing efficiency is improved, and multiple testing requirements are met.

Description

Technical Field

[0001] This utility model patent relates to the technical field of thermoelectric device performance testing, and more specifically, to thermoelectric device performance testing equipment. Background Technology

[0002] With the increasing diversity and complexity of market products, the application range of ultra-miniature thermoelectric coolers is becoming wider and wider, making performance testing of ultra-miniature thermoelectric coolers particularly important. The performance testing of thermoelectric coolers is generally aimed at testing larger thermoelectric coolers, but as thermoelectric coolers become more miniaturized, the testing accuracy, repeatability and reproducibility of the previous testing equipment are difficult to meet the requirements.

[0003] Currently, to meet the performance testing requirements of miniature thermoelectric coolers, performance testing equipment has been developed. For example, the prior patent with authorization announcement number CN221746200U discloses a performance testing device for miniature thermoelectric coolers, including: a vacuum system, a temperature control system, a miniature thermoelectric cooler testing unit, and a host computer; the temperature control system includes: a cooler, a temperature-controlled thermocouple, a temperature control circuit board, and a heat sink copper platform. The upper surface of the heat sink copper platform is located inside the vacuum system, and the lower surface of the heat sink copper platform is exposed to the atmosphere. The heat sink copper platform is sealed to the vacuum system by a sealing ring; the cooler is mounted on the upper surface of the heat sink copper platform, and the temperature-controlled thermocouple is placed on the upper surface of the cooler; the temperature control circuit board integrates a temperature control module, a thermocouple temperature measurement module connected to the temperature control module, and a power output. The module consists of a temperature-controlled thermocouple connected to a thermocouple temperature measurement module, a cooling element connected to a power output module, and a temperature control module connected to a host computer. The thermoelectric cooling device testing unit includes a temperature-measuring thermocouple, a temperature gauge, and a digital source meter. The micro-thermoelectric cooling device under test is mounted in close contact with the upper surface of the cooling element. The temperature-measuring thermocouple is attached to the upper surface of the micro-thermoelectric cooling device under test and connected to the temperature gauge. The digital source meter is connected to the output electrode of the micro-thermoelectric cooling device under test using a four-wire method. The host computer is connected to the temperature gauge, the digital source meter, the temperature control circuit board, and the vacuum system, respectively, to collect the temperatures of the cold and hot ends of the micro-thermoelectric cooling device under test, as well as the voltage across its terminals. The target temperature from the temperature list is sent to the temperature control circuit board, and the set current from the current list is sent to the digital source meter.

[0004] In the existing technology, thermoelectric device performance testing devices cannot test the cooling capacity performance of thermoelectric devices, and the testing is incomplete. Utility Model Content

[0005] The purpose of this invention is to provide a thermoelectric device performance testing device, which aims to solve the problem that existing thermoelectric device performance testing devices cannot test the cooling capacity performance of thermoelectric devices.

[0006] This invention is implemented as follows: a thermoelectric device performance testing equipment includes a pressing device, a cold surface testing device, and a hot surface testing device. The cold surface testing device is installed on the pressing device, and the pressing device is used to drive the cold surface testing device to rise or fall. The cold surface testing device and the hot surface testing device are arranged vertically in correspondence. The cold surface testing device includes a temperature difference testing assembly and a cooling capacity testing assembly. The temperature difference testing assembly and the cooling capacity testing assembly are respectively used to contact the cold surface of different products and monitor the cold surface temperature. The hot surface testing device is used to place multiple products and to contact the hot surface of different products and monitor the hot surface temperature.

[0007] Furthermore, the temperature difference testing assembly includes a main testing module, a secondary testing module, and a first cold-sensing wire. The first cold-sensing wire extends through the secondary testing module and is assembled and connected to the main testing module. The main testing module and the secondary testing module are arranged in series via the first cold-sensing wire. The hot surface testing device includes a first placement area and a second placement area. The first placement area is used to place the product to be tested, and the second placement area is used to place non-test products. The main testing module is vertically aligned with the first placement area, and the secondary testing module is vertically aligned with the second placement area. The first cold-sensing wire is used to detect the cold surface temperature of the product to be tested.

[0008] Furthermore, the main test module includes a main insulating block, a main wiring block, and a main copper block. The main insulating block is used for insulation and heat insulation. The main insulating block, the main wiring block, and the main copper block are sequentially stacked and assembled in a top-to-bottom direction. The main insulating block is assembled with the pressing device. The main wiring block is used for assembling the first cold sensing wire. The main copper block is used for contacting the cold surface of the product to be tested.

[0009] Furthermore, the sub-test module includes a sub-insulating block, a sub-wiring block, and a sub-copper block. The sub-insulating block is used for insulation and heat insulation. The sub-insulating block, the sub-wiring block, and the sub-copper block are sequentially stacked and assembled in a top-to-bottom direction. The sub-insulating block is assembled with the pressing device. The first cold-sensing wire passes through the sub-wiring block and extends through the main wiring block. The sub-copper block is used to contact the cold surface of the non-tested product. The temperature difference test assembly includes an isolation tube. The two ends of the isolation tube are respectively connected to the main wiring block and the sub-wiring block, and the first cold-sensing wire is sleeved on the isolation tube.

[0010] Furthermore, the hot surface testing device includes a product placement plate, a first hot copper block, and a second hot copper block. The first hot copper block and the second hot copper block are respectively installed on the product placement plate. The product placement plate has a first product placement area and a second product placement area. The first hot copper block is located in the first product placement area, and the second hot copper block is located in the second product placement area. The first hot copper block is used to contact the hot surface of the product to be tested, and the second hot copper block is used to contact the hot surface of the product not being tested. The temperature difference testing assembly includes a first thermal sensing wire, which is assembled with and conductively arranged with the first hot copper block.

[0011] Furthermore, the hot surface testing device includes a water-cooled plate, the product placement plate and the water-cooled plate are stacked and assembled, the first hot copper block is in contact with the water-cooled plate, and the water-cooled plate is used to adjust the temperature of the first hot copper block and the hot surface temperature of the product to be tested.

[0012] Furthermore, the cooling capacity testing assembly includes a primary testing module, a secondary testing module, and a second cold-sensing wire. The second cold-sensing wire extends through the secondary testing module and is assembled and connected to the primary testing module. The primary testing module and the secondary testing module are arranged in series via the second cold-sensing wire. The hot surface testing device includes a third placement area and a fourth placement area. The third placement area is used to place the product to be tested, and the fourth placement area is used to place non-test products. The primary testing module and the third placement area are vertically aligned, and the secondary testing module and the fourth placement area are vertically aligned. The second cold-sensing wire is used to detect the cold surface temperature of the product to be tested.

[0013] Furthermore, the first test module includes a first insulating block, a first heater, a first wiring block, and a first copper block. The first insulating block is used for insulation and heat insulation. Along the top-to-bottom direction, the first insulating block, the first heater, the first wiring block, and the first copper block are arranged in sequence and stacked. The first insulating block is assembled with the pressing device. The first wiring block is used to assemble the first cold sensing wire. The first copper block is used to contact the cold surface of the product to be tested. The first heater is used to generate heat and conduct it to the first copper block.

[0014] Furthermore, the hot surface testing device includes a product placement plate, a third hot copper block, and a fourth hot copper block. The third and fourth hot copper blocks are respectively installed on the product placement plate. The product placement plate has a third product placement area and a fourth product placement area. The third hot copper block is located in the third product placement area, and the fourth hot copper block is located in the fourth product placement area. The third hot copper block is used to contact the hot surface of the product to be tested, and the fourth hot copper block is used to contact the hot surface of a product not being tested. The temperature difference testing assembly includes a second thermal sensing wire, which is assembled with and conductively arranged with the third hot copper block.

[0015] Furthermore, the thermoelectric device performance testing equipment includes a vacuum device, which includes a lifting cylinder, a protective cover, a bell jar, and a vacuum module. The lifting cylinder, the protective cover, and the bell jar are assembled in sequence. The lifting cylinder is used to drive the protective cover to rise or fall. The protective cover is used to apply downward pressure to the bell jar. The bell jar has a bell cavity. The downward pressure device, the cold surface testing device, and the hot surface testing device are respectively located in the bell cavity. The vacuum module is used to make the bell cavity a vacuum state.

[0016] Compared with existing technologies, the thermoelectric device performance testing equipment provided by this utility model, during testing, involves loading the product onto the hot surface testing device, with the hot surface of the product in contact with the hot surface testing device. A pressing device drives the cold surface testing device downwards until it contacts the cold surface of the product. Then, simultaneous testing is performed through a temperature difference testing assembly and a cooling capacity testing assembly. The temperature difference testing assembly uses the temperature difference between the hot and cold surfaces of the product as the temperature difference, while the cooling capacity testing assembly records voltage and current when the hot surface temperature equals the cold surface temperature to obtain the maximum cooling capacity of the product under test. This automated testing reduces manpower, saves costs, improves testing accuracy, and satisfies the requirement of simultaneous temperature difference and cooling capacity testing, thus increasing testing efficiency and meeting multiple testing needs. Attached Figure Description

[0017] Figure 1 This is a three-dimensional schematic diagram of the thermoelectric device performance testing equipment provided by the present invention;

[0018] Figure 2 This is a front view schematic diagram of the thermoelectric device performance testing equipment provided by the present invention;

[0019] Figure 3 This is a three-dimensional schematic diagram of the main testing module of the thermoelectric device performance testing equipment provided by the present invention;

[0020] Figure 4 This is a top view schematic diagram of the water-cooled plate of the thermoelectric device performance testing equipment provided by the present invention;

[0021] Figure 5 This is a three-dimensional schematic diagram of the placement plate of the thermoelectric device performance testing equipment provided by the present invention;

[0022] Figure 6 This is an enlarged schematic diagram of the first placement area of ​​the thermoelectric device performance testing equipment provided by the present invention;

[0023] Figure 7 This is a schematic diagram of the layout of the vacuum device of the thermoelectric device performance testing equipment provided by the present invention;

[0024] Figure 8This is a three-dimensional schematic diagram of the first test module of the thermoelectric device performance testing equipment provided by the present invention. Detailed Implementation

[0025] To make the objectives, technical solutions, and advantages of this utility model clearer, the present utility model will be further described in detail below with reference to the accompanying drawings and embodiments. It should be understood that the specific embodiments described herein are merely illustrative of the present utility model and are not intended to limit the present utility model.

[0026] The implementation of this utility model will be described in detail below with reference to specific embodiments.

[0027] In the accompanying drawings of this embodiment, the same or similar reference numerals correspond to the same or similar components. In the description of this utility model, it should be understood that if terms such as "upper," "lower," "left," and "right" indicate the orientation or positional relationship based on the orientation or positional relationship shown in the drawings, they are only for the convenience of describing this utility model and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, or be constructed and operated in a specific orientation. Therefore, the terms used to describe positional relationships in the drawings are only for illustrative purposes and should not be construed as limiting this patent. For those skilled in the art, the specific meaning of the above terms can be understood according to the specific circumstances.

[0028] Reference Figure 1-8 The image shown is a preferred embodiment of the present invention.

[0029] The thermoelectric device performance testing equipment includes a pressure-reducing device 2, a cold-side testing device 1, and a hot-side testing device 3. The cold-side testing device 1 is installed on the pressure-reducing device 2, and the pressure-reducing device 2 is used to drive the cold-side testing device 1 to rise or fall. The cold-side testing device 1 and the hot-side testing device 3 are arranged vertically in correspondence. The cold-side testing device 1 includes a temperature difference testing assembly and a cooling capacity testing assembly. The temperature difference testing assembly and the cooling capacity testing assembly are used to contact the cold-side of different products and monitor the cold-side temperature, respectively. The hot-side testing device 3 is used to place multiple products and to contact the hot-side of different products and monitor the hot-side temperature.

[0030] The aforementioned thermoelectric device performance testing equipment, during testing, loads the product onto the hot surface testing device 3, ensuring the hot surface of the product is in contact with the hot surface testing device 3. The pressing device 2 drives the cold surface testing device 1 downwards until it contacts the cold surface of the product. Then, simultaneous testing is performed through the temperature difference testing assembly and the cooling capacity testing assembly. The temperature difference testing assembly uses the temperature difference between the hot and cold surfaces of the product as the temperature difference, while the cooling capacity testing assembly records the voltage and current when the hot surface temperature equals the cold surface temperature to obtain the maximum cooling capacity of the product under test. This automated testing reduces manpower input, saves costs, improves testing accuracy, and satisfies the requirement of simultaneous temperature difference and cooling capacity testing, thus improving testing efficiency and meeting multiple testing needs.

[0031] The temperature difference testing assembly includes a main testing module 11, a secondary testing module 12, and a first cold-sensing wire 13. The first cold-sensing wire 13 extends through the secondary testing module 12 and is assembled and connected to the main testing module 11. The main testing module 11 and the secondary testing module 12 are arranged in series via the first cold-sensing wire 13. The hot surface testing device 3 includes a first placement area 321 and a second placement area 322. The first placement area 321 is used to place the product to be tested, and the second placement area 322 is used to place non-test products. The main testing module 11 is vertically aligned with the first placement area 321, and the secondary testing module 12 is vertically aligned with the second placement area 322. The first cold-sensing wire 13 is used to detect the cold surface temperature of the product to be tested.

[0032] In this way, when conducting temperature difference testing, the main testing module 11, the auxiliary testing module 12, and the first cold sensing line 13 work together to achieve simultaneous temperature difference testing in the two areas, which serves as a data comparison tool. At the same time, the exposed area of ​​the first cold sensing line 13 is shortened, the heat absorbed by the first cold sensing line 13 is reduced, and the testing accuracy is improved.

[0033] The first cold-sensing wire 13 is connected to the temperature sensor to extract test data.

[0034] By using a single first cold sensing wire 13 in conjunction with the main test module 11 and the auxiliary test module 12, the cost can be effectively reduced and the test error can also be reduced.

[0035] Since the temperature difference test and cooling capacity test are conducted under vacuum conditions, it is impossible to directly collect the temperature of the cold surface of the product. Therefore, a first cold sensing wire 13 is needed to collect the temperature of the cold surface. Furthermore, the first cold sensing wire 13 needs to be connected to the temperature sensor, which makes the layout length of the first cold sensing wire 13 relatively long. Therefore, the first cold sensing wire 13 is first connected to the main testing module 11 through the sub-test module 12, which can shorten the exposed area of ​​the first cold sensing wire 13, reduce the heat absorbed by the first cold sensing wire 13, and improve the test accuracy.

[0036] The main test module 11 includes a main insulating block 111, a main wiring block 112, and a main copper block 113. The main insulating block 111 is used for insulation and heat insulation. The main insulating block 111, the main wiring block 112, and the main copper block 113 are arranged in sequence from top to bottom. The main insulating block 111 is assembled with the pressure device 2. The main wiring block 112 is used to supply the first cold sensing wire 13 for assembly. The main copper block 113 is used to contact the cold surface of the product to be tested.

[0037] In this way, the main insulating block 111 plays an insulating and heat-insulating role, avoiding the influence of external temperature conduction on the testing of the first cold temperature sensing wire 13 and improving the testing accuracy of the first cold temperature sensing wire 13; the main wiring block 112 realizes the setting of the first cold temperature sensing wire 13; and the main copper block 113 realizes the conduction of the cold surface temperature of the product, which facilitates the temperature collection of the first cold temperature sensing wire 13.

[0038] The main wiring block 112 is nickel-plated to improve heat conduction and help improve the testing accuracy of the first cold sensing wire 13.

[0039] The cold side of the product is equipped with a thermally conductive silicone layer, which is laid flat in contact with the main copper block 113 to improve the uniformity and effectiveness of heat conduction.

[0040] The main test module 11 includes two main fixed rings 114, which are arranged at opposite ends. The main fixed rings 114 are used to simultaneously mount the main insulating block 111, the main wiring block 112 and the main copper block 113, so that the main insulating block 111, the main wiring block 112 and the main copper block 113 are stacked and fixed, which facilitates heat conduction.

[0041] The main insulating block 111 has a main edge groove, which is arranged in a downward recessed manner. The main copper block 113 has a main copper groove, which is arranged in an upward recessed manner. The main retaining ring 114 is embedded in the main edge groove and the main copper groove at both ends, thereby improving the assembly stability between the main insulating block 111, the main wiring block 112 and the main copper block 113.

[0042] The main test module 11 includes a main side shell 115 and a main side spring. The main side shell 115 and the main insulating block 111 are movably assembled. One end of the main side spring is fixed, and the other end of the main side spring is mated with the main insulating block 111. The main side spring is used to apply an elastic force to the main insulating block 111. In this way, when the pressing device 2 causes the main copper block 113 to contact the product, the main side spring simultaneously applies an elastic force to the main insulating block 111, which is then transmitted to the main copper block 113, making the contact between the main copper block 113 and the product more stable and avoiding excessive pressure that could cause damage to the product.

[0043] The sub-test module 12 includes a sub-insulating block, a sub-wiring block, and a sub-copper block. The sub-insulating block is used for insulation and heat insulation. The sub-insulating block, sub-wiring block, and sub-copper block are stacked and assembled in sequence from top to bottom. The sub-insulating block is assembled with the pressing device 2. The first cold sensing wire 13 passes through the sub-wiring block and extends through the main wiring block 112. The sub-copper block is used to contact the cold surface of the non-tested product.

[0044] In this way, the secondary insulating block plays an insulating and heat-insulating role, avoiding the influence of external temperature conduction on the testing of the first cold temperature sensing line 13 and improving the testing accuracy of the first cold temperature sensing line 13; the secondary wiring block realizes the setting of the first cold temperature sensing line 13; and the secondary copper block realizes the conduction of the cold surface temperature of the product, which facilitates the temperature collection of the first cold temperature sensing line 13.

[0045] The temperature difference test assembly includes an isolation tube, with its two ends connected to the main wiring block 112 and the auxiliary wiring block, respectively, and the isolation tube is fitted with a first cold sensing wire 13.

[0046] The isolation tube prevents the first cold sensing wire 13 from being exposed, thereby preventing the first cold sensing wire 13 from absorbing heat and improving the accuracy of temperature collection by the first cold sensing wire 13.

[0047] The hot surface testing device 3 includes a product placement plate 32, a first hot copper block 325, and a second hot copper block 326. The first hot copper block 325 and the second hot copper block 326 are respectively installed on the product placement plate 32. The product placement plate 32 has a first product placement area 321 and a second product placement area 322. The first hot copper block 325 is located in the first product placement area 321, and the second hot copper block 326 is located in the second product placement area 322. The first hot copper block 325 is used to contact the hot surface of the product to be tested, and the second hot copper block 326 is used to contact the hot surface of the product not being tested. The temperature difference testing assembly includes a first thermal sensing wire, which is assembled with and conductively arranged with the first hot copper block 325.

[0048] In this way, the temperature of the hot surface of the product under test is collected through the first thermal sensing wire to achieve temperature difference testing.

[0049] The product placement plate 32 has a first recessed groove 329, which is arranged in a downward recessed manner. The product to be tested includes a welded part, which is arranged in a protruding manner. The first recessed groove 329 is used to allow the welded part to be movably embedded. In this way, the welded part will not be squeezed during testing, thus avoiding product damage. At the same time, it plays a role in positioning and reinforcing the product during loading.

[0050] The hot surface testing device 3 includes a water-cooled plate 31, a product placement plate 32 and the water-cooled plate 31 are stacked and assembled, and a first hot copper block 325 is in contact with the water-cooled plate 31. The water-cooled plate 31 is used to adjust the temperature of the first hot copper block 325 and the hot surface temperature of the product under test. The water-cooled plate 31 can dissipate heat from the hot surface of the product under test, thereby adjusting the temperature of the first hot copper block 325 and the hot surface temperature of the product under test.

[0051] Thus, when it is necessary to test the temperature difference and cooling capacity under a certain temperature condition, such as 20 degrees or 25 degrees, the temperature of the first hot copper block 325 and the hot surface temperature of the product under test can be adjusted by the water-cooled plate 31 to tend towards 20 degrees or 25 degrees, and then the temperature difference and cooling capacity tests can be carried out; thus meeting different testing needs.

[0052] The water-cooled plate 31 includes an inlet pipe 311, an outlet pipe 312, and a water-cooling pipe 313. The water-cooling pipe 313 is arranged in a meandering manner, and both ends of the water-cooling pipe 313 are connected to the inlet pipe 311 and the outlet pipe 312 respectively. In this way, the temperature of the first hot copper block 325 or the hot surface temperature of the product under test can be adjusted through the water-cooling pipe 313.

[0053] The cooling capacity testing assembly includes a primary testing module 14, a secondary testing module 15, and a second cold sensing wire 16. The second cold sensing wire 16 extends through the secondary testing module 15 and is assembled and connected to the primary testing module 14. The primary testing module 14 and the secondary testing module 15 are arranged in series via the second cold sensing wire 16. The hot surface testing device 3 includes a third placement area 323 and a fourth placement area 324. The third placement area 323 is used to place the product to be tested, and the fourth placement area 324 is used to place non-test products. The primary testing module 14 and the third placement area 323 are vertically aligned, and the secondary testing module 15 and the fourth placement area 324 are vertically aligned. The second cold sensing wire 16 is used to detect the cold surface temperature of the product to be tested.

[0054] In this way, when conducting cooling capacity testing, the cooling capacity testing of the two areas can be carried out simultaneously through the cooperation of the first test module 14, the second test module 15 and the second cold sensing line 16, which serves as a data comparison function. At the same time, the exposed range of the second cold sensing line 16 is shortened, the heat absorbed by the second cold sensing line 16 is reduced, and the test accuracy is improved.

[0055] The first test module 14 includes a first insulating block 141, a first heater 142, a first wiring block 143, and a first copper block 144. The first insulating block 141 is used for insulation and heat insulation. The first insulating block 141, the first heater 142, the first wiring block 143, and the first copper block 144 are arranged in sequence from top to bottom. The first insulating block 141 is assembled with the pressing device 2. The first wiring block 143 is used to assemble the first cold sensing wire 13. The first copper block 144 is used to contact the cold surface of the product to be tested. The first heater 142 is used to generate heat and conduct it to the first copper block 144.

[0056] In this way, the first main insulating block 111 plays an insulating and heat-insulating role, preventing external temperature conduction from affecting the testing of the second cold temperature sensing wire 16 and improving the testing accuracy of the second cold temperature sensing wire 16; the first wiring block 143 enables the setting of the second cold temperature sensing wire 16; the first copper block 144 enables the conduction of the cold surface temperature of the product, facilitating the temperature collection of the second cold temperature sensing wire 16; and the first heater 142 can heat the cold surface of the product. When the temperature difference between the cold surface temperature and the hot surface temperature is 0, the cooling capacity can be obtained.

[0057] The hot surface testing device 3 includes a product placement plate 32, a third hot copper block 327, and a fourth hot copper block 328. The third hot copper block 327 and the fourth hot copper block 328 are respectively installed on the product placement plate 32. The product placement plate 32 has a third product placement area 323 and a fourth product placement area 324. The third hot copper block 327 is located in the third product placement area 323, and the fourth hot copper block 328 is located in the fourth product placement area 324. The third hot copper block 327 is used to contact the hot surface of the product to be tested, and the fourth hot copper block 328 is used to contact the hot surface of the product not being tested. The temperature difference testing assembly includes a second thermal sensing wire, which is assembled with and conductively connected to the third hot copper block 327.

[0058] In this way, the hot surface temperature of the product under test is collected through the second thermal sensing wire. When the hot surface temperature is equal to the cold surface temperature, the voltage and current are recorded to obtain the maximum cooling capacity of the product under test.

[0059] The thermoelectric device performance testing equipment includes a vacuum device 4, which includes a lifting cylinder 41, a protective cover 42, a bell jar 43, and a vacuum module 44. The lifting cylinder 41, the protective cover 42, and the bell jar 43 are arranged in sequence. The lifting cylinder 41 is used to drive the protective cover 42 to rise or fall. The protective cover 42 is used to apply downward pressure to the bell jar 43. The bell jar 43 has a bell jar cavity. The downward pressure device 2, the cold surface testing device 1, and the hot surface testing device 3 are respectively located in the bell jar cavity. The vacuum module 44 is used to make the bell jar cavity a vacuum state.

[0060] In this way, temperature difference testing and cooling capacity testing are conducted in a vacuum environment, reducing the influence of other factors on the test results and improving the accuracy of the tests.

[0061] The above description is only a preferred embodiment of the present utility model and is not intended to limit the present utility model. Any modifications, equivalent substitutions and improvements made within the spirit and principles of the present utility model should be included within the protection scope of the present utility model.

Claims

1. A performance testing device for thermoelectric devices, characterized in that, The device includes a pressing device, a cold-side testing device, and a hot-side testing device. The cold-side testing device is installed on the pressing device, and the pressing device is used to drive the cold-side testing device to rise or fall. The cold-side testing device and the hot-side testing device are arranged vertically in correspondence. The cold-side testing device includes a temperature difference testing assembly and a cooling capacity testing assembly. The temperature difference testing assembly and the cooling capacity testing assembly are used to contact the cold-side of different products and monitor the cold-side temperature, respectively. The hot-side testing device is used to place multiple products and to contact the hot-side of different products and monitor the hot-side temperature.

2. The thermoelectric device performance testing equipment as described in claim 1, characterized in that, The temperature difference testing assembly includes a main testing module, a secondary testing module, and a first cold-sensing wire. The first cold-sensing wire extends through the secondary testing module and is assembled and connected to the main testing module. The main testing module and the secondary testing module are arranged in series via the first cold-sensing wire. The hot surface testing device includes a first placement area and a second placement area. The first placement area is used to place the product to be tested, and the second placement area is used to place non-test products. The main testing module is vertically aligned with the first placement area, and the secondary testing module is vertically aligned with the second placement area. The first cold-sensing wire is used to detect the cold surface temperature of the product to be tested.

3. The thermoelectric device performance testing equipment as described in claim 2, characterized in that, The main test module includes a main insulating block, a main wiring block, and a main copper block. The main insulating block is used for insulation and heat insulation. The main insulating block, the main wiring block, and the main copper block are stacked and assembled in sequence from top to bottom. The main insulating block is assembled with the pressing device. The main wiring block is used to assemble the first cold sensing wire. The main copper block is used to contact the cold surface of the product to be tested.

4. The thermoelectric device performance testing equipment as described in claim 3, characterized in that, The sub-test module includes a sub-insulating block, a sub-wiring block, and a sub-copper block. The sub-insulating block is used for insulation and heat insulation. The sub-insulating block, the sub-wiring block, and the sub-copper block are stacked and assembled sequentially from top to bottom. The sub-insulating block is assembled with the pressing device. The first cold-sensing wire passes through the sub-wiring block and extends through the main wiring block. The sub-copper block is used to contact the cold surface of the non-tested product. The temperature difference test assembly includes an isolation tube. The two ends of the isolation tube are respectively connected to the main wiring block and the sub-wiring block, and the first cold-sensing wire is sleeved on the isolation tube.

5. The thermoelectric device performance testing equipment as described in any one of claims 2-4, characterized in that, The hot surface testing device includes a product placement plate, a first hot copper block, and a second hot copper block. The first hot copper block and the second hot copper block are respectively installed on the product placement plate. The product placement plate has a first product placement area and a second product placement area. The first hot copper block is located in the first product placement area, and the second hot copper block is located in the second product placement area. The first hot copper block is used to contact the hot surface of the product to be tested, and the second hot copper block is used to contact the hot surface of the product not being tested. The temperature difference testing assembly includes a first thermal sensing wire, which is assembled with and conductively arranged with the first hot copper block.

6. The thermoelectric device performance testing equipment as described in claim 5, characterized in that, The hot surface testing device includes a water-cooled plate, the product placement plate and the water-cooled plate are stacked and assembled, the first hot copper block is in contact with the water-cooled plate, and the water-cooled plate is used to adjust the temperature of the first hot copper block and the hot surface temperature of the product to be tested.

7. The thermoelectric device performance testing equipment as described in any one of claims 2-4, characterized in that, The cooling capacity testing assembly includes a primary testing module, a secondary testing module, and a second cold-sensing wire. The second cold-sensing wire extends through the secondary testing module and is assembled and connected to the primary testing module. The primary testing module and the secondary testing module are arranged in series via the second cold-sensing wire. The hot surface testing device includes a third placement area and a fourth placement area. The third placement area is used to place the product to be tested, and the fourth placement area is used to place non-test products. The primary testing module and the third placement area are vertically aligned, and the secondary testing module and the fourth placement area are vertically aligned. The second cold-sensing wire is used to detect the cold surface temperature of the product to be tested.

8. The thermoelectric device performance testing equipment as described in claim 7, characterized in that, The first test module includes a first insulating block, a first heater, a first wiring block, and a first copper block. The first insulating block is used for insulation and heat insulation. The first insulating block, the first heater, the first wiring block, and the first copper block are stacked and assembled in sequence from top to bottom. The first insulating block is assembled with the pressing device. The first wiring block is used to assemble the first cold sensing wire. The first copper block is used to contact the cold surface of the product to be tested. The first heater is used to generate heat and conduct it to the first copper block.

9. The thermoelectric device performance testing equipment as described in claim 7, characterized in that, The hot surface testing device includes a product placement plate, a third hot copper block, and a fourth hot copper block. The third and fourth hot copper blocks are respectively mounted on the product placement plate. The product placement plate has a third product placement area and a fourth product placement area. The third hot copper block is located in the third product placement area, and the fourth hot copper block is located in the fourth product placement area. The third hot copper block is used to contact the hot surface of the product to be tested, and the fourth hot copper block is used to contact the hot surface of a product not being tested. The temperature difference testing assembly includes a second thermal sensing wire, which is assembled with and conductively arranged with the third hot copper block.

10. The thermoelectric device performance testing equipment as described in any one of claims 1-4, characterized in that, The thermoelectric device performance testing equipment includes a vacuum device, which includes a lifting cylinder, a protective cover, a bell jar, and a vacuum module. The lifting cylinder, the protective cover, and the bell jar are assembled in sequence. The lifting cylinder is used to drive the protective cover to rise or fall. The protective cover is used to apply downward pressure to the bell jar. The bell jar has a bell cavity. The downward pressure device, the cold surface testing device, and the hot surface testing device are respectively located in the bell cavity. The vacuum module is used to make the bell cavity a vacuum state.

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