A temperature cycling experiment chamber and an experiment method thereof

Abstract

The application relates to the technical field of environment detection, and discloses a temperature cycle experiment bin and an experiment method thereof. The temperature cycle experiment bin comprises an experiment bin body, an experiment bin cover arranged at the top of the experiment bin body, a plurality of spray pipelines arranged at the bottom of the experiment bin cover, and a plurality of pipeline nozzles arranged at the bottom of the spray pipelines. The plurality of spray pipelines are respectively connected with salt mist solution filling equipment, rainwater filling equipment and carbon dioxide filling equipment. The experiment bin body is internally provided with refrigeration components for environment refrigeration and heating components for environment heating. The application has the effect of improving the authenticity and accuracy of environment testing of a test product.

Description

Technical Field

[0001] This invention relates to the technical field of environmental testing, and in particular to a temperature cycling test chamber and its experimental method. Background Technology

[0002] Rapid temperature change test chambers are essential testing equipment in fields such as aviation, automotive, and home appliances. They are used for high and low temperature rapid change stress screening, high and low temperature constant, and damp heat environment simulation reliability tests on various electrical and electronic products and materials. They obtain parameters and performance after temperature environment changes, and evaluate whether the adaptability and characteristics of the test sample change under given environmental conditions.

[0003] For example, the Chinese utility model patent with authorization announcement number CN205020098 discloses a high and low temperature impact test chamber, which includes a high temperature chamber and a low temperature chamber. A test rack for placing test samples is provided in the high temperature chamber and the low temperature chamber. The test rack includes a frame, a cylinder, a guide rail, and a slider. The left half is fixed to the upper surface of the high temperature chamber and the right half is fixed to the upper surface of the low temperature chamber. The frame is slidably connected to the guide rail through the slider and the cylinder is located on one side of the frame. The upper part of the frame is provided with a test sample placement platform, and the upper surface of the placement platform has at least one groove for accommodating test samples.

[0004] Regarding the aforementioned technologies, this high and low temperature impact test chamber is used to detect environmental changes of test products from a low temperature chamber to a high temperature chamber or from a high temperature chamber to a low temperature chamber. However, the test products not only need to detect the impact of temperature changes, but also require a multi-point coordinated loading system to conduct mechanical property tests on the test products in corrosive environments, thereby increasing the authenticity and accuracy of environmental testing of the test products. Summary of the Invention

[0005] To improve the authenticity and accuracy of environmental testing of experimental products, this application provides a temperature cycling test chamber and its experimental method.

[0006] In a first aspect, the present invention provides a temperature cycling experimental chamber, which adopts the following technical solution:

[0007] A temperature cycling test chamber includes a test chamber body, a test chamber cover located on top of the test chamber body, several spray pipes located at the bottom of the test chamber cover, and several pipe nozzles located at the bottom of the spray pipes; the several spray pipes are respectively connected to a salt spray solution injection device, a rainwater injection device, and a carbon dioxide injection device; the test chamber body is equipped with a refrigeration component for environmental cooling and a heating component for environmental heating.

[0008] By adopting the above technical solutions, the salt spray solution injection equipment realizes salt spray simulation experiments through the nozzles on the spray pipe, the rainwater injection equipment realizes rainwater simulation experiments through the nozzles on the spray pipe, and the carbon dioxide injection equipment realizes carbon dioxide simulation experiments through the nozzles on the spray pipe. The temperature change of the experimental chamber is controlled by the refrigeration and heating components, thereby improving the accuracy of environmental testing of automotive power batteries.

[0009] Optionally, the refrigeration component includes a condensate circulation device located outside the experimental chamber, a condensate conduit located inside the experimental chamber, and several condensate pipes located above the condensate conduit. The several condensate pipes are symmetrically arranged below the condensate conduit along its axis, and the lengths of the several condensate pipes decrease in the direction away from the condensate conduit. The ends of the condensate conduit and condensate pipes near the condensate circulation device are aligned. The liquid inlet end of the condensate conduit and condensate pipes is connected to the output end of the condensate circulation device, and the liquid outlet end of the condensate conduit and condensate pipes is connected to the input end of the condensate circulation device.

[0010] By adopting the above technical solution, the inner side of the experimental chamber is divided into several cooling zones along its own length. The number of condensing pipes in the cooling zones gradually decreases towards the direction away from the condensate circulation equipment, thereby achieving the effect of the cooling zones gradually weakening towards the direction away from the condensate circulation equipment.

[0011] Optionally, the heating components include a heating liquid circulation device located outside the experimental chamber, a high-heat conduit located inside the experimental chamber, and several high-heat pipes located inside the experimental chamber; the heating liquid circulation device and the condensate circulation device, the high-heat conduit and the condensate conduit, and the high-heat pipes and the condensate pipes are symmetrically arranged respectively.

[0012] By adopting the above technical solution, the inner side of the experimental chamber is divided into several high-heat zones along its own length. The number of high-heat pipes in these high-heat zones gradually decreases towards the direction away from the heating liquid circulation equipment, thereby achieving the effect of gradually weakening the high-heat zones towards the direction away from the heating liquid circulation equipment.

[0013] Optionally, the experimental chamber is equipped with heat-conducting components for uniform heat dissipation. Several heat-conducting components include a ceramic heat-conducting plate located on the inside of the experimental chamber. High-heat pipes, high-heat pipes, condensation pipes, and condensation pipes on the same side of the experimental chamber are all located between the ceramic heat-conducting plate and the inner wall of the experimental chamber.

[0014] By adopting the above technical solution, the ceramic heat-conducting plate has good thermal conductivity. The ceramic heat-conducting plate evenly conducts the temperature of the high-heat pipe and high-heat conduit to the experimental chamber, and the ceramic heat-conducting plate evenly conducts the temperature of the condensation pipe and high-heat conduit to the experimental chamber, thereby achieving uniform heating and cooling of the surface of the automotive power battery.

[0015] Optionally, the experimental chamber is equipped with a support component for carrying the vehicle power battery. The support component includes a support frame that is slidably disposed within the experimental chamber, several support trays installed inside the support frame, and several temperature sensors respectively disposed between two adjacent support trays.

[0016] By adopting the above technical solution, the temperature sensor can monitor the temperature change between two adjacent automotive power batteries in real time, and the monitored data will be fed back to the data center in real time.

[0017] Optionally, the experimental chamber is equipped with a reciprocating component that drives the bearing frame to slide back and forth. The reciprocating component includes several reciprocating racks arranged in the experimental chamber along the length of the experimental chamber, a chain conveyor line installed on the top of the reciprocating racks, and limiting engagement teeth fixed to the bottom of the bearing frame. Several limiting engagement teeth are arranged along the length of the reciprocating racks, and a row of limiting engagement teeth is arranged corresponding to several chain conveyor lines. The limiting engagement teeth in the same row are engaged with the chain of the corresponding chain conveyor line.

[0018] By adopting the above technical solution, the servo motor starts and drives the chain conveyor line to operate. The chain conveyor line drives the supporting frame to slide back and forth along the length of the experimental chamber. A batch of automotive power batteries will undergo the process of high temperature to low temperature and low temperature to high temperature.

[0019] Optionally, the experimental chamber is equipped with a fan component for airflow. The fan component includes several support angle plates installed at the bottom of the support frame and a rotating fan rotatably installed at the end of the support angle plates away from the reciprocating rack. The rotating fan is located below the support tray.

[0020] By adopting the above technical solution, the rotating reciprocating gear drives the rotation of the rotating fan through the synchronous belt, thereby realizing the flow of gas between two adjacent automotive power batteries, so as to facilitate better heat conduction between the two adjacent automotive power batteries.

[0021] Optionally, the experimental chamber is equipped with a drive component for driving the rotary fan to rotate. The drive component includes a reciprocating gear rotatably mounted on the end of the bearing angle plate near the reciprocating rack, a pulley coaxially fixed to the shaft of the reciprocating gear and the shaft of the rotary fan, and a synchronous belt sleeved on the periphery of the two pulleys; several reciprocating gears are respectively meshed with the corresponding reciprocating rack.

[0022] By adopting the above technical solution, the reciprocating gear and the reciprocating rack form a relative motion, which causes the reciprocating rack to drive the reciprocating gear to rotate, thereby realizing that the rotating reciprocating gear drives the rotation of the rotary fan through the synchronous belt.

[0023] Secondly, the present invention provides a temperature cycling experiment method for operating the aforementioned temperature cycling experimental chamber, comprising the following steps:

[0024] S1, the dual function of the cooling and heating components enables the experimental chamber to achieve the effect of high temperature to low temperature conversion along its own length;

[0025] S2, The supporting component is used to support a batch of automotive power batteries. The two rows of limiting teeth at the bottom of the supporting frame are respectively engaged with the chains of the two chain conveyor lines, and several reciprocating gears are respectively engaged with the corresponding reciprocating racks.

[0026] S3. The reciprocating components drive the load-bearing frame to slide back and forth. A batch of automotive power batteries will undergo a process of high temperature to low temperature conversion and a process of low temperature to high temperature conversion.

[0027] S4. The temperature sensor monitors the temperature around the vehicle's power battery in real time. The monitored data is fed back to the data center in real time. The drive component drives the rotation of the fan to achieve the flow of gas between two adjacent vehicle power batteries.

[0028] S5. Salt spray solution injection equipment realizes salt spray simulation experiment, rainwater injection equipment realizes rainwater simulation experiment, and carbon dioxide injection equipment realizes carbon dioxide simulation experiment.

[0029] By adopting the above technical solutions, the salt spray solution filling equipment realizes salt spray simulation experiments through pipe nozzles, the rainwater filling equipment realizes rainwater simulation experiments through pipe nozzles, and the carbon dioxide filling equipment realizes carbon dioxide simulation experiments through pipe nozzles. The cooling and heating components control the temperature changes of the experimental chamber, thereby improving the accuracy of environmental testing of automotive power batteries. The dual function of the cooling and heating components enables the interior of the experimental chamber to achieve the effect of high temperature to low temperature conversion along its own length. The temperature sensor monitors the temperature around the automotive power battery in real time, and the monitored data is fed back to the data center in real time.

[0030] In summary, this application includes at least one of the following beneficial technical effects:

[0031] 1. The salt spray solution filling equipment realizes the salt spray simulation experiment through pipe nozzles, the rainwater filling equipment realizes the rainwater simulation experiment through pipe nozzles, and the carbon dioxide filling equipment realizes the carbon dioxide simulation experiment through pipe nozzles. The refrigeration and heating components control the temperature change of the experimental chamber, thereby improving the accuracy of environmental testing of automotive power batteries.

[0032] 2. The inner side of the experimental chamber is divided into several cooling zones along its length. The number of condensing pipes in each cooling zone gradually decreases as it moves away from the condensate circulation equipment, thus achieving the effect of the cooling zones gradually weakening as they move away from the condensate circulation equipment.

[0033] 3. The inner side of the experimental chamber is divided into several high-heat zones along its length. The number of high-heat pipes in each high-heat zone gradually decreases as it moves away from the heating liquid circulation equipment, thereby achieving the effect of the high-heat zones gradually weakening as they move away from the heating liquid circulation equipment. Attached Figure Description

[0034] Figure 1 This is a schematic diagram of the temperature cycling experimental chamber in an embodiment of this application.

[0035] Figure 2 This is an exploded view of the internal structure of the experimental chamber in an embodiment of this application.

[0036] Figure 3 This is a schematic diagram of the structure of the condenser conduit and condenser pipe in the embodiments of this application.

[0037] Figure 4 This is a schematic diagram of the structure of the high-heat conduit and high-heat pipe in the embodiments of this application.

[0038] Figure 5 This is an exploded view of the internal structure of the reciprocating rack in the embodiments of this application.

[0039] Figure 6 This is an exploded view of the bottom structure of the load-bearing frame in an embodiment of this application.

[0040] Figure 7 This is an exploded schematic diagram of the reciprocating gear and the rotary fan in the embodiments of this application.

[0041] Figure 8 This is an exploded schematic diagram of the experimental chamber cover and spray pipe in an embodiment of this application.

[0042] Reference numerals: 11. Experimental chamber body; 12. Experimental chamber cover; 13. Condensate circulation equipment; 14. Condensate conduit; 15. Condensate pipe; 16. Liquid inlet pipe; 17. Liquid outlet pipe; 18. High-heat conduit; 19. High-heat pipe; 20. Heating liquid circulation equipment; 21. Ceramic heat-conducting plate; 22. Reciprocating rack; 23. Assembly groove; 24. Chain conveyor line; 25. Bearing frame; 26. Bearing tray; 27. Transmission bar; 28. Temperature sensor; 29. ​​Automotive power battery; 30. Limiting engagement teeth; 31. Bearing angle plate; 32. Reciprocating gear; 33. Rotary fan; 34. Pulley; 35. Synchronous belt; 36. Spray pipe; 37. Pipe nozzle. Detailed Implementation

[0043] The following is in conjunction with the appendix Figure 1-8 This application will be described in further detail.

[0044] Reference Figure 1-3 As shown, a temperature cycling experimental chamber includes an experimental chamber body 11 and an experimental chamber cover 12 disposed on the top of the experimental chamber body 11. The experimental chamber body 11 and the experimental chamber cover 12 are made of thermal insulation material. A condensate circulation device 13 is installed on the right side of the experimental chamber body 11. A U-shaped condenser conduit 14 is horizontally arranged on the inner side of the experimental chamber body 11. A condenser pipe 15 is arranged horizontally above the condenser conduit 14. Several condenser pipes 15 are arranged vertically. The several condenser pipes 15 are symmetrically arranged below the condenser conduit 14 about the axis of the condenser conduit 14. The lengths of the several condenser pipes 15 decrease at equal intervals in the direction away from the condenser conduit 14. The ends of the condenser conduit 14 and the several condenser pipes 15 near the condensate circulation device 13 are aligned, so that the inner side of the experimental chamber body 11 is divided into several cooling zones at equal intervals along its own length.

[0045] Reference Figure 2-4As shown, the number of condensing pipes 15 in several cooling zones gradually decreases towards the direction away from the condensate circulation device 13, thus gradually weakening the cooling effect towards the direction away from the condensate circulation device 13. A set of condensing conduits 14 and several condensing pipes 15 are respectively arranged on the front and rear sides of the experimental chamber 11. The inlet ends of the condensing conduits 14 and several condensing pipes 15 are connected to an inlet pipe 16, which is connected to the output end of the condensate circulation device 13. The drain ends of the condensing conduits 14 and several condensing pipes 15 are connected to a drain pipe 17, which is connected to the input end of the condensate circulation device 13. A high-heat conduit 18, a heating liquid circulation device 20, and several high-heat pipes 19 are arranged on the left side of the experimental chamber 11. The heating liquid circulation device 20 and the condensate circulation device 13, the high-heat conduit 18 and the condensing conduit 14, and the high-heat pipes 19 and the condensing pipes 15 are arranged symmetrically.

[0046] Reference Figure 2-4 As shown, the inner side of the experimental chamber 11 is divided into several high-heat zones along its length. The number of high-heat pipes 19 in these zones gradually decreases towards the direction away from the heating liquid circulation device 20, and the intensity of the high-heat zones gradually decreases towards the direction away from the heating liquid circulation device 20. This achieves the effect of high-temperature to low-temperature conversion along the left side to the right side of the inner side of the experimental chamber 11. A ceramic heat-conducting plate 21 is installed along the length of the inner side of the experimental chamber 11, with one ceramic heat-conducting plate 21 located on each of the front and rear sides of the experimental chamber 11. High-heat pipes 18, several high-heat pipes 19, condensation pipes 14, and several condensation pipes 15 on the same side of the experimental chamber 11 are all located between the ceramic heat-conducting plate 21 and the inner wall of the experimental chamber 11.

[0047] Reference Figure 5-7 As shown, a reciprocating rack 22 is arranged along its length on the inner side of the experimental chamber 11. Two reciprocating racks 22 are arranged along the width of the experimental chamber 11, and the meshing teeth of the two reciprocating racks 22 are located on the side of the two reciprocating racks 22 that are close to each other. An assembly groove 23 is formed on the top of the reciprocating rack 22 along its length. A chain conveyor line 24 is arranged along its length through the assembly groove 23. The speed of the chain conveyor line 24 is controlled by a servo motor. A bearing frame 25 is arranged horizontally between the two reciprocating racks 22. The bearing frame 25 is a rectangular frame formed by four straight strips. Several bearing trays 26 are arranged along the length of the experimental chamber 11 on the inner side of the bearing frame 25. A transmission strip 27 is fixedly connected between two adjacent bearing trays 26. The several bearing trays 26 are fixedly installed on the inner side of the bearing frame 25 by support legs.

[0048] Reference Figure 5-7 As shown, the support tray 26 supports the automotive power battery 29. A temperature sensor 28 for temperature monitoring is vertically mounted on the top of the transmission rack 27, which monitors the temperature change between two adjacent automotive power batteries 29 in real time. Limiting teeth 30 are fixedly installed at the bottom of the support frame 25. Several limiting teeth 30 are arranged along the length of the reciprocating rack 22, with one row corresponding to each of the two chain conveyor lines 24. The limiting teeth 30 in the same row engage with the chain of the corresponding chain conveyor line 24. Supporting angle plates 31 are fixedly installed at the bottom of the support frame 25 corresponding to each of the two reciprocating racks 22. Several supporting angle plates 31 are arranged along the length of the reciprocating rack 22. A reciprocating gear 32 is rotatably mounted on the end of the supporting angle plate 31 near the end of the reciprocating rack 22.

[0049] Reference Figure 6-8 As shown, the reciprocating gear 32 meshes with the corresponding reciprocating rack 22. A rotary fan 33 is rotatably mounted on the end of the bearing angle plate 31 away from the reciprocating rack 22. The rotary fan 33 is located below the bearing tray 26 and between two adjacent bearing trays 26. The shafts of the reciprocating gear 32 and the rotary fan 33 both pass through the bearing angle plate 31 and are coaxially fixed with pulleys 34. A synchronous belt 35 is fitted on the outer circumference of the two pulleys 34. A spray pipe 36 is embedded in the bottom of the experimental chamber cover 12 along its own length. Three spray pipes 36 are arranged along the width of the experimental chamber cover 12. Several pipe nozzles 37 are fixedly connected to the bottom of the spray pipes 36 along their own length. The three spray pipes 36 are respectively connected to the salt spray solution injection equipment for salt spray simulation experiment, the rainwater injection equipment for rainwater simulation experiment, and the carbon dioxide injection equipment for carbon dioxide simulation experiment.

[0050] A temperature cycling experiment method for operating the aforementioned temperature cycling test chamber includes the following steps:

[0051] S1. The condensate circulation device 13 is filled with condensate towards the condensate conduit 14 and several condensate pipes 15, so that the cooling effect inside the experimental chamber 11 gradually increases towards the direction of the condensate circulation device 13.

[0052] S2. The heating liquid circulation device 20 injects high-heat liquid into the high-heat pipe 18 and several high-heat pipes 19, so that the heating effect inside the experimental chamber 11 gradually increases towards the direction of the heating liquid circulation device 20.

[0053] The combined function of S3, the condensate circulation device 13, and the heating liquid circulation device 20 enables the conversion of high temperature to low temperature inside the experimental chamber 11 from left to right.

[0054] S4. First, place a batch of automotive power batteries 29 on the corresponding carrier tray 26. Then, place the carrier frame 25 on top of the two reciprocating racks 22. The two rows of limiting teeth 30 at the bottom of the carrier frame 25 are respectively engaged with the chains of the two chain conveyor lines 24. Several reciprocating gears 32 are respectively engaged with the two reciprocating racks 22.

[0055] S5. The servo motor starts and drives the chain conveyor 24 to operate. The chain conveyor 24 drives the bearing frame 25 to slide back and forth along the length of the experimental chamber 11. The batch of automotive power batteries 29 will undergo the process of high temperature to low temperature and low temperature to high temperature.

[0056] S6, Temperature sensor 28 monitors the temperature of the environment surrounding the vehicle's power battery 29 in real time, and the monitored data is fed back to the data center in real time;

[0057] S7, reciprocating gear 32 and reciprocating rack 22 form relative motion, so that reciprocating rack 22 drives reciprocating gear 32 to rotate, and the rotating reciprocating gear 32 drives the rotation of rotating fan 33 through synchronous belt 35, thereby realizing the flow of gas between two adjacent automotive power batteries 29.

[0058] S8. The salt spray solution injection equipment realizes the salt spray simulation experiment through the pipe nozzle 37 on the spray pipe 36, the rainwater injection equipment realizes the rainwater simulation experiment through the pipe nozzle 37 on the spray pipe 36, and the carbon dioxide injection equipment realizes the carbon dioxide simulation experiment through the pipe nozzle 37 on the spray pipe 36.

[0059] The above are all preferred embodiments of this application, and are not intended to limit the scope of protection of this application. Therefore, all equivalent changes made in accordance with the structure, shape and principle of this application should be covered within the scope of protection of this application.

Claims

1. A temperature cycling experimental chamber, characterized in that: The experimental chamber includes an experimental chamber body (11), an experimental chamber cover (12) located on top of the experimental chamber body (11), several spray pipes (36) located at the bottom of the experimental chamber cover (12), and several pipe nozzles (37) located at the bottom of the spray pipes (36); the several spray pipes (36) are respectively connected to a salt spray solution injection device, a rainwater injection device, and a carbon dioxide injection device; the experimental chamber body (11) is equipped with a refrigeration component for environmental cooling and a heating component for environmental heating. The refrigeration component includes a condensate circulation device (13) located outside the experimental chamber (11), a condensate conduit (14) located inside the experimental chamber (11), and several condensate pipes (15) located above the condensate conduit (14). The several condensate pipes (15) are symmetrically arranged below the condensate conduit (14) with respect to the axis of the condensate conduit (14). The length of the several condensate pipes (15) decreases in the direction away from the condensate conduit (14). The ends of the condensate conduit (14) and the condensate pipes (15) are aligned with the ends of the condensate circulation device (13). The liquid inlet of the condensate conduit (14) and the condensate pipes (15) are connected to the output end of the condensate circulation device (13), and the liquid outlet of the condensate conduit (14) and the condensate pipes (15) are connected to the input end of the condensate circulation device (13). The heating component includes a heating liquid circulation device (20) located outside the experimental chamber (11), a high-heat conduit (18) located inside the experimental chamber (11), and several high-heat pipes (19) located inside the experimental chamber (11); the heating liquid circulation device (20) and the condensate circulation device (13), the high-heat conduit (18) and the condensate conduit (14), and the high-heat pipes (19) and the condensate pipes (15) are respectively symmetrically arranged.

2. The temperature cycling experimental chamber according to claim 1, characterized in that: The experimental chamber (11) is equipped with heat-conducting components for uniform heat dissipation. Several heat-conducting components include a ceramic heat-conducting plate (21) located inside the experimental chamber (11). The high-heat pipe (18), high-heat pipe (19), condensation pipe (14), and condensation pipe (15) on the same side of the experimental chamber (11) are all located between the ceramic heat-conducting plate (21) and the inner wall of the experimental chamber (11).

3. The temperature cycling experimental chamber according to claim 2, characterized in that: The experimental chamber (11) is equipped with a support component for carrying the automotive power battery (29). The support component includes a support frame (25) that is slidably disposed in the experimental chamber (11), a number of support trays (26) installed in the inner perimeter of the support frame (25), and a number of temperature sensors (28) respectively disposed between two adjacent support trays (26).

4. The temperature cycling experimental chamber according to claim 3, characterized in that: The experimental chamber (11) is provided with a reciprocating component that drives the bearing frame (25) to slide back and forth. The reciprocating component includes several reciprocating racks (22) arranged in the experimental chamber (11) along the length of the experimental chamber (11), a chain conveyor line (24) installed on the top of the reciprocating racks (22), and limiting engagement teeth (30) fixed to the bottom of the bearing frame (25). Several limiting engagement teeth (30) are arranged along the length of the reciprocating racks (22). Each limiting engagement tooth (30) is arranged in a row corresponding to several chain conveyor lines (24). The limiting engagement teeth (30) in the same row are engaged with the chain of the corresponding chain conveyor line (24).

5. A temperature cycling experimental chamber according to claim 4, characterized in that: The experimental chamber (11) is equipped with a fan component for airflow. The fan component includes several bearing angle plates (31) installed at the bottom of the bearing frame (25) and a rotating fan (33) rotatably installed at the end of the bearing angle plate (31) away from the reciprocating rack (22). The rotating fan (33) is located below the bearing tray (26).

6. The temperature cycling test chamber according to claim 5, characterized in that: The experimental chamber (11) is equipped with a drive component for driving the rotary fan (33) to rotate. The drive component includes a reciprocating gear (32) rotatably mounted on the end of the bearing angle plate (31) near the reciprocating rack (22), a pulley (34) coaxially fixed to the shaft of the reciprocating gear (32) and the shaft of the rotary fan (33), and a synchronous belt (35) sleeved on the periphery of the two pulleys (34). Several reciprocating gears (32) are respectively meshed with the corresponding reciprocating rack (22).

7. A temperature cycling experiment method, based on the temperature cycling experimental chamber described in claim 6, characterized in that, Includes the following steps: S1, the dual function of the cooling and heating components enables the experimental chamber (11) to achieve the effect of high temperature to low temperature conversion along its own length; S2. The supporting component is used to support a batch of automotive power batteries (29). The supporting frame (25) is placed on top of two adjacent reciprocating racks (22). The two rows of limiting meshing teeth (30) at the bottom of the supporting frame (25) are respectively meshed with the chains of the two chain conveyor lines (24). Several reciprocating gears (32) are respectively meshed with the corresponding reciprocating racks (22). S3. The reciprocating component drives the load-bearing frame (25) to slide back and forth along the length of the experimental chamber (11). The batch of automotive power batteries (29) will undergo the process of high temperature to low temperature and low temperature to high temperature. S4. Temperature sensor (28) monitors the temperature around the car power battery (29) in real time. The monitored data is fed back to the data center in real time. The drive component drives the rotation of the rotating fan (33) to realize the flow of gas between two adjacent car power batteries (29). S5. Salt spray solution injection equipment realizes salt spray simulation experiment, rainwater injection equipment realizes rainwater simulation experiment, and carbon dioxide injection equipment realizes carbon dioxide simulation experiment.

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