PTC heater aging test cabinet

Abstract

The utility model discloses a kind of PTC heater aging test cabinet, including cabinet and the test module being set in cabinet, test module includes air duct component, clamping assembly, drive mechanism, test interface, first air velocity sensor;Air duct component is equipped with fan, its both ends are equipped with air outlet and air inlet;Clamping assembly can swing-arm type overturn, located the air outlet side of air duct component;Drive mechanism is connected with clamping assembly, for driving clamping assembly overturn;First air velocity sensor is set on air duct component, the sensing part of first air velocity sensor is inserted into air duct component, for measuring wind speed and data feedback;Test interface is connected with PTC heater, for driving work and data acquisition.The utility model can accurately check the working effect of detecting PTC heater under different temperature, wind speed, simulate automobile aging test under different temperature environment, to carry out stable, accurate real, comprehensive rich detection and aging test to PTC heater.

Description

Technical Field

[0001] This utility model relates to the field of testing equipment technology, and in particular to a PTC heater aging test cabinet. Background Technology

[0002] In new energy vehicles, especially electric vehicles, various components are powered by electricity. Among these, the key component involved in air conditioning heating is the PTC (Positive Temperature Coefficient) heater, which consists of a driver and a radiator. PTC heaters have irregular shapes, complex surface forms, and numerous interfaces; therefore, the transfer and testing of PTC heaters typically rely on fixtures for accurate positioning. Existing aging test equipment suffers from imprecise control and difficulty in maintaining stable test conditions, leading to inaccurate aging test results for PTC heaters. Utility Model Content

[0003] In order to solve the technical problem of large positioning tolerance of integrated busbar in the existing technology, one of the objectives of this utility model is to provide a PTC heater aging test cabinet.

[0004] One of the objectives of this utility model is achieved through the following technical solution: 1. A PTC heater aging test cabinet, characterized in that the PTC heater aging test cabinet includes a cabinet and a test module disposed in the cabinet, the test module including an air duct assembly, a clamping assembly, a drive mechanism, a test interface, and a first wind speed sensor; The air duct assembly is equipped with a fan, and has an air outlet and an air inlet at both ends for guiding air through the radiator of the PTC heater. The clamping assembly is rotatably mounted on the air outlet side of the air duct assembly, and is used to clamp the heat sink of the PTC heater to the air outlet of the air duct assembly. The driving mechanism is connected to the clamping assembly and is used to drive the clamping assembly to rotate. The first wind speed sensor is disposed on the air duct assembly, and the sensing part of the first wind speed sensor extends into the air duct assembly for measuring wind speed and providing data feedback. The test interface is connected to the PTC heater and is used for driving operation and data acquisition.

[0005] The PTC heater aging test cabinet is characterized in that the air duct assembly includes a first fixed plate and a first docking frame. The first fixed plate is disposed at the air outlet and has a first ventilation hole through which air can pass. The first docking frame is disposed on the first fixed plate for docking with the radiator. The first ventilation hole is located inside the first docking frame.

[0006] The PTC heater aging test cabinet is characterized in that the clamping assembly includes a flip frame, a second fixing plate, and a second docking frame. The flip frame is flip-mounted inside the cabinet. The second fixing plate is mounted on the flip frame and has a second ventilation hole for air to pass through. The second docking frame is located on the side of the second fixing plate near the first fixing plate and is used to dock with the radiator. The second ventilation hole is located inside the second docking frame.

[0007] The PTC heater aging test cabinet is characterized in that the clamping assembly further includes an air outlet hood for guiding airflow, the air outlet hood being disposed on the side of the second fixing plate away from the first fixing plate.

[0008] The PTC heater aging test cabinet is characterized in that the test module further includes a second wind speed sensor, which is disposed on the air outlet cover, and the sensing part of the second wind speed sensor extends into the air outlet cover.

[0009] The PTC heater aging test cabinet is characterized in that the first docking frame is detachably mounted on the first fixed plate, and the second docking frame is detachably mounted on the second fixed plate.

[0010] The PTC heater aging test cabinet is characterized in that the first docking frame is provided with a first pin facing the first fixed plate, and the surface of the first pin is provided with a first limiting groove. The first fixing plate has a first pin hole on its surface near the first docking frame, and a first indexing pin is provided on the side of the first fixing plate. The first indexing pin extends into the first pin hole and is embedded in the first limiting groove. The second docking frame is provided with a second pin facing the second fixing plate, and the surface of the second pin is provided with a second limiting groove; The second fixing plate has a second pin hole on its surface near the second docking frame, and a second indexing pin is provided on the side of the second fixing plate. The second indexing pin extends into the first pin hole and is embedded in the second limiting groove.

[0011] The PTC heater aging test cabinet is characterized in that the air duct assembly further includes an air inlet pipe and a fan, the air inlet pipe is provided with an air inlet and an air outlet, the fan is disposed at the air outlet of the air inlet pipe, and the first fixing plate is disposed at the air outlet of the air inlet pipe.

[0012] The PTC heater aging test cabinet is characterized in that the test module further includes a clamping mechanism, the clamping mechanism including a cylinder and a clamping rod, the cylinder being disposed on the side of the air duct assembly, and the clamping rod being disposed at the output end of the cylinder and extending towards the clamping assembly to clamp the clamping assembly.

[0013] Optionally, the cabinet is provided with baffles, and there are two baffles corresponding to the test module. The two baffles are respectively set on both sides of the air duct assembly to support the fixture.

[0014] Compared with the prior art, the beneficial effects of this utility model are as follows: The ventilation duct assembly ventilates the PTC heater, and the fan stably controls the wind speed to simulate the working conditions of an in-vehicle vehicle. This allows for a realistic and accurate inspection of the PTC heater's performance under different wind speeds, and aging tests can be conducted at various wind speeds. This enables stable, accurate, realistic, comprehensive, and extensive testing and aging tests of the PTC heater, thereby shortening the product development and testing cycle and accelerating the time to market for automotive parts. Attached Figure Description

[0015] Figure 1 This is a schematic diagram of the structure of the PTC heater aging test cabinet of this utility model; Figure 2 A schematic diagram of the internal structure of the PTC heater aging test cabinet with the front and rear doors open, according to this utility model; Figure 3 A schematic diagram of the front structure of the PTC heater aging test cabinet of this utility model after removing the front and rear cabinet doors; Figure 4 This is a three-dimensional structural diagram of the test module in the closed state of the PTC heater aging test cabinet of this utility model; Figure 5 This is a three-dimensional structural diagram of the test module in the PTC heater aging test cabinet of this utility model in the open state; Figure 6 This is a side view of the PTC heater aging test cabinet of this utility model, with the test module in a closed state and the loading fixture in a side view. Figure 7 This is an exploded view of the clamping components in the PTC heater aging test cabinet of this utility model; Figure 8 This is an exploded view of the air duct assembly in the PTC heater aging test cabinet of this utility model.

[0016] Explanation of reference numerals in the attached diagram: 1. Server rack; 11. Mounting strip; 2. Test module; 21. Air duct assembly; 211. First fixing plate; 212. First docking frame; 213. First pin; 2131. First limiting groove; 214. First indexing pin; 215. Air inlet duct; 216. Fan; 22. Clamping assembly; 221. Tilting frame; 222. Second fixing plate; 223. Second docking frame; 224. Air outlet hood; 225. Second pin; 2251. Second limiting groove; 226. Second indexing pin; 23. Drive mechanism; 24. Test the interface; 25. First wind speed sensor; 26. Clamping mechanism; 261. Cylinder; 262. Clamping rod; 27. Second wind speed sensor; 3. Fixtures; 4. PTC heater. Detailed Implementation

[0017] The following will refer to the appendices in the embodiments of this application. Figure 1 To be continued Figure 8 The technical solutions in the embodiments of this application are clearly and completely described. Obviously, the described embodiments are only a part of the embodiments of this application, and not all of the embodiments. Based on the embodiments in this application, all other embodiments obtained by those of ordinary skill in the art without creative effort are within the scope of protection of this application.

[0018] It should be noted that all directional indications (such as up, down, left, right, front, back, etc.) in the embodiments of this application are only used to explain the relative positional relationship and movement of each component in a certain specific posture (as shown in the figure). If the specific posture changes, the directional indication will also change accordingly.

[0019] Furthermore, the use of terms such as "first" and "second" in this application is for descriptive purposes only and should not be construed as indicating or implying their relative importance or implicitly specifying the number of technical features indicated. Therefore, a feature defined as "first" or "second" may explicitly or implicitly include at least one of that feature. Additionally, the technical solutions of the various embodiments can be combined with each other, but only on the basis of being achievable by those skilled in the art. When the combination of technical solutions is contradictory or impossible to implement, such a combination of technical solutions should be considered non-existent and not within the scope of protection claimed in this application.

[0020] In new energy vehicles, PTC heater 4 is usually used as the air conditioning heating component. PTC heater 4 includes a driver and a radiator 41 connected to the driver. The driver generates heat when energized, and the radiator 41 dissipates heat, thereby providing warm airflow to the vehicle interior.

[0021] like Figure 1-6 The diagram shows a PTC heater aging test cabinet, used for the detection or aging test of a PTC heater 4. The PTC heater 4 is transported, loaded, tested, and unloaded in the form of a fixture 3. The PTC heater aging test cabinet includes a cabinet 1 and a test module 2 installed in the cabinet 1. The test module 2 includes an air duct assembly 21, a clamping assembly 22, a drive mechanism 23, a test interface 24, and a first wind speed sensor 25.

[0022] The air duct assembly 21 is equipped with a fan 216. Air outlets and inlets are located at both ends of the air duct assembly 21, guiding air through the radiator 41 of the PTC heater 4. A clamping assembly 22 is mounted in the cabinet 1 in a swing-arm manner, located on the air outlet side of the air duct assembly 21, clamping the radiator 41 of the PTC heater 4 to the air outlet of the air duct assembly 21. A drive mechanism 23 is connected to the clamping assembly 22, driving the clamping assembly 22 to rotate between the test position and the material changing position. A first wind speed sensor 25 is mounted on the air duct assembly 21, with its sensing part extending into the air duct assembly 21, for measuring wind speed and providing data feedback. A test interface 24 is connected to the PTC heater 4 for driving operation and data acquisition.

[0023] In this invention, a test module 2 is installed inside the cabinet 1. The air duct assembly 21 in the test module 2 simulates the structure and ventilation function of an air conditioning duct, thereby simulating the state of the PTC heater 4 within the air conditioning duct of a car. A clamping assembly 22 is located at the air outlet of the air duct assembly 21 and is rotatable. Driven by the drive mechanism 23, the clamping assembly 22 clamps the PTC heater 4 by swinging or rotating, thus fixing the PTC heater 4 to the air outlet of the air duct assembly 21.

[0024] The specific work process is as follows: 1. First, the drive mechanism 23 drives the clamping assembly 22 to flip to the material changing position, the clamping assembly 22 opens, and moves away from the air outlet of the air duct assembly 21; 2. Move or transport the PTC heater 4 to the air outlet of the air duct assembly 21, and make the radiator 41 close to the air outlet; 3. The drive mechanism 23 drives the clamping assembly 22 to flip towards the test position. The clamping assembly 22 flips towards the air outlet of the air duct assembly 21. The clamping assembly 22 closes and presses the heat sink 41 against the air outlet. The clamping assembly 22 and the air duct assembly 21 form a clamping of the heat sink 41. 4. Start the PTC heater 4 and the ventilation function of the air duct assembly 21 to begin the test; 5. After the test, the drive mechanism 23 opens the clamping assembly 22 to the material changing position, and the fixture 3 unloads the material.

[0025] In this invention, the ventilation duct assembly 21 ventilates the PTC heater 4, and the fan 216 stably controls the wind speed to simulate the vehicle's working state. This allows for a realistic and accurate inspection of the working effect of the PTC heater 4 under different wind speeds, and aging tests are conducted under different wind speeds. This enables stable, accurate, realistic, comprehensive, and extensive testing and aging tests of the PTC heater 4, thereby shortening the product development and testing cycle and accelerating the time to market for automotive parts.

[0026] Furthermore, the air outlet and air inlet of the air duct assembly 21 are located on the front and back of the cabinet 1, respectively.

[0027] The test module also includes a first temperature sensor, the sensing part of which extends into the air duct assembly for measuring temperature. A first wind speed sensor 25 is disposed on the air duct assembly 21, and the first temperature sensor can also be disposed on the air duct assembly 21, so that wind speed and temperature can be sensed within the air duct assembly 21, thereby detecting the wind speed and temperature rising within the air duct assembly 21.

[0028] This embodiment can detect the air temperature entering the air duct assembly 21, and accurately check the working effect of the PTC heater under different temperatures and wind speeds, thereby conducting stable, accurate, comprehensive and rich testing and aging tests on the PTC heater.

[0029] In addition, the number of test modules 2 in rack 1 can be one, two, three, four or more. As shown in Figure 3, six test modules 2 are installed in rack 1. The six test modules 2 are set in two queues. Each test module 2 in the queue is vertically distributed in the rack, and the two queues are set side by side.

[0030] In some embodiments of the air duct component 21, such as Figure 8 As shown, the air duct assembly 21 includes a first fixing plate 211 and a first docking frame 212. The first docking frame 212 is disposed on the first fixing plate 211 and is used to dock with the radiator 41. The first fixing plate 211 is disposed at the air outlet, and the first fixing plate 211 is provided with a first ventilation hole for air to pass through, which is located inside the first docking frame 212.

[0031] In this invention, the air duct assembly 21 includes a first fixing plate 211 and a first docking frame 212. The first fixing plate 211 is an installation structure located at the air outlet and is used to install the first docking frame 212. The first docking frame 212 is disposed on the first fixing plate 211 and docks with one side of the radiator 41. The first fixing plate 211 covers the air outlet and uses the first ventilation hole on the first fixing plate 211 to guide air and concentrate the airflow to the radiator 41. Through the first fixing plate 211 and the first docking frame 212, the sealing effect of the air duct assembly 21 when the air is discharged is improved, and all the air is guided through the radiator 41, reducing airflow leakage.

[0032] The shape of the first docking frame 212 corresponds to the shape of the heat sink 41 frame. A rubber ring is provided on the end face of the first docking frame 212. By setting the rubber ring, the docking sealing effect is increased and the leakage of gas and air is reduced.

[0033] In some embodiments of the clamping assembly 22, such as Figure 7 As shown, the clamping assembly 22 includes a flip frame 221, a second fixing plate 222, and a second docking frame 223. The flip frame 221 is flip-mounted inside the cabinet 1. The second fixing plate 222 is mounted on the flip frame 221 and has a second ventilation hole for air passage. The second docking frame 223 is located on the side of the second fixing plate 222 near the first fixing plate 211 and is used to dock with the heat sink 41. The first docking frame 212 and the second docking frame 223 dock from both sides of the heat sink 41, respectively. The second ventilation hole is located inside the second docking frame 223.

[0034] In this embodiment, the drive mechanism 23 drives the flipping frame 221 to flip, causing the second fixed plate 222 and the second docking frame 223 to swing towards or away from the air outlet of the air duct assembly 21, thereby clamping or releasing the radiator 41, which facilitates the loading and unloading of the PTC heater 4. The second fixed plate 222 is mounted on the flipping frame 221 and serves as the mounting structure for the second docking frame 223. The second docking frame 223 is mounted on the second fixed plate 222 and docks with the other side of the radiator 41. The second docking frame 223 is guided through the second ventilation hole on the second fixed plate 222, thus utilizing the second ventilation hole to guide air. In this embodiment, the second fixed plate 222 and the second docking frame 223 also improve the sealing effect of the airflow after the radiator 41 is heated, reduce airflow leakage, improve the stability of testing and detection, and especially improve the accuracy of detecting the temperature of the heated air.

[0035] The drive mechanism 23 can be a cylinder or a push rod, which is hinged to the clamping assembly 22 at its output end, thereby pushing the clamping assembly 22 to flip.

[0036] Furthermore, such as Figure 7 As shown, the clamping assembly 22 also includes an air outlet hood 224 for guiding airflow. The air outlet hood 224 is located on the side of the second fixing plate 222 away from the first fixing plate 211. After being guided by the second docking frame 223, the airflow is concentrated and its temperature or velocity is measured by the air outlet hood 224. The airflow converges inside the air outlet hood 224 and flows out through the opening of the air outlet hood 224. Before discharging the airflow, the air outlet hood 224 provides a relatively good airflow detection cavity, including the detection of airflow temperature and flow rate.

[0037] In some further embodiments of test module 2, such as Figure 4 As shown, the test module 2 also includes a second wind speed sensor 27 and a second temperature sensor. The second wind speed sensor 27 is disposed on the air outlet cover 224, and the sensing part of the second wind speed sensor 27 extends into the air outlet cover 224.

[0038] The first docking frame 212 is detachably mounted on the first fixing plate 211, and the second docking frame 223 is detachably mounted on the second fixing plate 222. This allows for easy replacement of different first docking frames 212 and second docking frames 223 when aging tests different products, enabling the equipment to test different models and specifications of radiators 41.

[0039] For the detachable connection of the first docking frame 212, such as Figure 8 As shown, specifically, the first mating frame 212 is provided with a first pin 213 facing the first fixing plate 211, and the surface of the first pin 213 is provided with a first limiting groove 2131. The surface of the first fixing plate 211 near the first mating frame 212 is provided with a first pin hole, and the side of the first fixing plate 211 is provided with a first indexing pin 214, which extends into the first pin hole and is embedded in the first limiting groove 2131. During assembly, the first pin 213 is inserted into the first pin hole, and the first indexing pin 214 extends from the side of the first fixing plate 211 into the first pin hole and is embedded in the first limiting groove 2131, thereby limiting the position of the first pin 213 and preventing the first mating frame 212 from detaching or falling off. When it is necessary to replace the first mating frame 212, lift the first indexing pin 214. The first indexing pin 214 will exit the first limiting groove 2131, so that the first pin 213 can easily exit the first pin hole, thereby easily disassembling the first mating frame 212, and then better replacing the first mating frame 212 of other specifications.

[0040] like Figure 7As shown, the second mating frame 223 is provided with a second pin 225 facing the second fixing plate 222, and the surface of the second pin 225 is provided with a second limiting groove 2251. The surface of the second fixing plate 222 near the second mating frame 223 is provided with a second pin hole, and the side of the second fixing plate 222 is provided with a second indexing pin 226. The second indexing pin 226 extends into the first pin hole and is embedded in the second limiting groove 2251. During assembly, the second pin 225 is inserted into the second pin hole, and the second indexing pin 226 extends from the side of the second fixing plate 222 into the second pin hole and is embedded in the second limiting groove 2251, thereby limiting the position of the second pin 225 and preventing the second mating frame 223 from detaching or falling off. When it is necessary to replace the second mating frame 223, lift the second indexing pin 226. The second indexing pin 226 will exit the second limit groove 2251, so that the second pin 225 can easily exit the second pin hole, thereby easily disassembling the second mating frame 223, and then better replacing the second mating frame 223 of other specifications.

[0041] The specific number of the first pin 213, the second pin 225, the first pin hole, the second pin hole, the first indexing pin 214, and the second indexing pin 226 can be one, two, three, four, or more. When the number is set to one, other fixing structures are required, such as undercuts. The number of first indexing pins 214 can be less than the number of first pins 213, but preferably there is at least one first indexing pin 214. The number of second indexing pins 226 can be less than the number of second pins 225, but preferably there is at least one second indexing pin 226.

[0042] Regarding the aforementioned air duct component 21, such as Figure 8 As shown, the main structure of the air duct assembly 21 includes an air inlet duct 215 and a fan 216. The air inlet duct 215 has an air inlet and an air outlet, the fan 216 is located at the air outlet of the air inlet duct 215, and the first fixing plate 211 is located at the air outlet of the air inlet duct 215. The aforementioned first wind speed sensor 25 and first temperature sensor are both located on the air inlet duct 215, and the sensing parts of the first wind speed sensor 25 and the first temperature sensor extend into the air inlet duct 215.

[0043] In some embodiments of the test module 2, the test module 2 further includes a clamping mechanism 26. When the clamping assembly 22 is flipped to the test position, the clamping mechanism 26 abuts against the clamping assembly 22, clamps the clamping assembly 22, prevents the clamping assembly 22 from loosening, and improves the stability of the radiator 41 test module.

[0044] For the clamping mechanism 26, such as Figure 4 , Figure 5As shown, specifically, the clamping mechanism 26 includes a cylinder 261 and a clamping rod 262. The cylinder 261 is located on the side of the air duct assembly 21, specifically fixed to the side of the air inlet duct 215. The clamping rod 262 is located at the output end of the cylinder 261 and extends towards the clamping assembly 22 to clamp the clamping assembly 22. The cylinder 261 drives the clamping tube to move, thereby clamping or releasing the clamping assembly 22. The cylinder 261 outputs linear motion, and can also output both linear and rotary motion, for example, outputting linear motion first and then rotary motion.

[0045] For the loading and unloading of jig 3, such as Figure 3 As shown, rack 1 is equipped with two baffles 11, corresponding to test module 2. These two baffles 11 are respectively positioned on both sides of the air duct assembly 21 to support fixture 3. When fixture 3 is loaded, it slides into rack 1 along the baffles 11. As fixture 3 slides in, the heat sink 41 abuts against the air outlet of air duct assembly 21. The data output interface on fixture 3 connects with test interface 24, thus completing the loading of fixture 3. The baffles 11 have an L-shaped cross-section, thus serving both to support fixture 3 and to guide and restrict its movement.

[0046] The above embodiments are merely preferred embodiments of this utility model and should not be construed as limiting the scope of protection of this utility model. Any non-substantial changes and substitutions made by those skilled in the art based on this utility model shall fall within the scope of protection claimed by this utility model.

Claims

1. A PTC heater aging test cabinet, characterized in that, The PTC heater aging test cabinet includes a cabinet and a test module installed in the cabinet. The test module includes an air duct assembly, a clamping assembly, a drive mechanism, a test interface, and a first wind speed sensor. The air duct assembly is equipped with a fan, and has an air outlet and an air inlet at both ends for guiding air through the radiator of the PTC heater. The clamping assembly is rotatably mounted on the air outlet side of the air duct assembly, and is used to clamp the heat sink of the PTC heater to the air outlet of the air duct assembly. The driving mechanism is connected to the clamping assembly and is used to drive the clamping assembly to rotate. The first wind speed sensor is disposed on the air duct assembly, and the sensing part of the first wind speed sensor extends into the air duct assembly for measuring wind speed and providing data feedback. The test interface is connected to the PTC heater and is used for driving operation and data acquisition.

2. The PTC heater aging test cabinet as described in claim 1, characterized in that, The air duct assembly includes a first fixing plate and a first docking frame. The first fixing plate is disposed at the air outlet and has a first ventilation hole for air to pass through. The first docking frame is disposed on the first fixing plate for docking with the radiator. The first ventilation hole is located inside the first docking frame.

3. The PTC heater aging test cabinet as described in claim 2, characterized in that, The clamping assembly includes a flip frame, a second fixing plate, and a second docking frame. The flip frame is flip-mounted inside the cabinet. The second fixing plate is mounted on the flip frame and has a second ventilation hole for air to pass through. The second docking frame is located on the side of the second fixing plate near the first fixing plate and is used to dock with the radiator. The second ventilation hole is located inside the second docking frame.

4. The PTC heater aging test cabinet as described in claim 3, characterized in that, The clamping assembly also includes an air outlet hood for guiding airflow, the air outlet hood being disposed on the side of the second fixing plate away from the first fixing plate.

5. The PTC heater aging test cabinet as described in claim 4, characterized in that, The test module also includes a second wind speed sensor, which is mounted on the air outlet cover and the sensing part of the second wind speed sensor extends into the air outlet cover.

6. The PTC heater aging test cabinet as described in claim 3, characterized in that, The first docking frame is detachably mounted on the first fixing plate, and the second docking frame is detachably mounted on the second fixing plate.

7. The PTC heater aging test cabinet as described in claim 6, characterized in that, The first docking frame is provided with a first pin facing the first fixed plate, and the surface of the first pin is provided with a first limiting groove; The first fixing plate has a first pin hole on its surface near the first docking frame, and a first indexing pin is provided on the side of the first fixing plate. The first indexing pin extends into the first pin hole and is embedded in the first limiting groove. The second docking frame is provided with a second pin facing the second fixing plate, and the surface of the second pin is provided with a second limiting groove; The second fixing plate has a second pin hole on its surface near the second docking frame, and a second indexing pin is provided on the side of the second fixing plate. The second indexing pin extends into the first pin hole and is embedded in the second limiting groove.

8. The PTC heater aging test cabinet as described in any one of claims 2 to 7, characterized in that, The air duct assembly further includes an air inlet pipe and a fan. The air inlet pipe has an air inlet and an air outlet. The fan is located at the air outlet of the air inlet pipe. The first fixing plate is located at the air outlet of the air inlet pipe.

9. The PTC heater aging test cabinet as described in claim 1, characterized in that, The test module also includes a clamping mechanism, which includes a cylinder and a clamping rod. The cylinder is located on the side of the air duct assembly, and the clamping rod is located at the output end of the cylinder and extends towards the clamping assembly to clamp the clamping assembly.

10. The PTC heater aging test cabinet as described in claim 1, characterized in that, The cabinet is equipped with baffles, and there are two baffles corresponding to the test module. The two baffles are respectively set on both sides of the air duct assembly to support the fixture.

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