Thermal shock test device and method from extremely cold environment to extremely hot environment

Abstract

The invention discloses a thermal shock test device and method from an extremely cold environment to an extremely hot environment, and the device comprises a high-temperature furnace box which is disposed at the upper part in a housing, the high-temperature furnace box comprises a heat preservation box body and a high-temperature loading assembly disposed in the heat preservation box body, and the bottom of the heat preservation box body is a furnace door which can be opened and closed; the furnace door is connected with a furnace door opening and closing driving mechanism; the test bed is arranged on the lower portion in the shell, the heat preservation box body can cover the test bed under the driving of the lifting driving mechanism in the state that the furnace door is opened, the heat preservation box body and the test bed jointly form a sealed space, and the shell is provided with a device outer door which can be opened and closed and corresponds to the test bed; the low-temperature loading assembly is arranged at the lower part in the shell and is positioned on one side of the test bed; the temperature detection unit comprises a first temperature detection assembly arranged in the high-temperature furnace box and a second temperature detection assembly arranged in the surrounding area of the low-temperature loading assembly; and a controller. The method is wide in applicable temperature range and high in temperature rise rate.

Description

Technical Field

[0001] The present invention relates to the technical field of thermal shock test devices, and in particular to a thermal shock test device and method for testing from an extremely cold environment to an extremely hot environment. Background Art

[0002] Products (such as new energy vehicle batteries, hydrogen storage containers, refractory materials, charge structures, etc.) may be subject to abnormal accident scenarios such as falling, collision, fire, etc. during production, transportation and use. In particular, related products with great power and strong destructive power cannot be evaluated and controlled in abnormal accidents, which often leads to serious consequences. In abnormal accidents, thermal shock scenarios from extremely cold to extremely hot are often included. Temperature shock tests are used to assess the adaptability of products to rapid changes in the surrounding environment. Currently, they are mainly divided into temperature chamber test methods and pool fire / furnace fire test methods. The temperature chamber test method is mainly aimed at the impact caused by changes in atmospheric ambient temperature, with a narrow temperature range and a slow temperature change rate. Pool fire / furnace fire test methods mainly include open oil pool fire test devices, open flame heating furnace test devices, and electric radiation heat test devices. The open oil pool fire test device has the problem of difficult combustion time control, the flame temperature is greatly affected by the ambient wind speed and air flow, and the problem of gas and particulate pollutant emissions during the combustion process. The furnace heating rate of the open flame heating furnace test device is slow, and the heating furnace often needs to be preheated before the test, and the exhaust flue gas pollutes the environment. During the operation of the electric radiation heat test device, the shielding plate is prone to thermal deformation and cracking. In addition to their own shortcomings, the above three devices cannot reproduce the low temperature environment that the test sample initially endures.

[0003] Therefore, a thermal shock test device from extremely cold environment to extremely hot environment is developed to solve the above problems. Summary of the invention

[0004] The present invention provides a thermal shock test device for extremely cold environment to extremely hot environment, so as to solve the problems of existing thermal shock test devices having narrow temperature variation range, low temperature rise rate and being unable to cover extremely cold to extremely hot shock environments.

[0005] The present invention achieves the above-mentioned purpose through the following technical solutions: The present invention discloses a thermal shock test device for extremely cold environment to extremely hot environment, comprising: An outer shell, wherein the outer shell is a hollow shell; A high-temperature furnace box, the high-temperature furnace box is arranged at the upper part of the shell, the high-temperature furnace box includes a heat preservation box body and a high-temperature loading component arranged in the heat preservation box body, the bottom of the heat preservation box body is an openable and closable furnace door, the furnace door is connected to a furnace door opening and closing drive mechanism, the heat preservation box body is connected to a lifting drive mechanism, and the lifting drive mechanism can drive the heat preservation box body to move up and down; A test bench, the test bench is arranged at the lower part of the shell, and the heat preservation box can cover the test bench when the furnace door is opened under the drive of the lifting drive mechanism, and form a sealed space together with the test bench, and the shell is provided with an openable and closable device outer door corresponding to the test bench; A low temperature loading assembly, the low temperature loading assembly is arranged in the lower part of the housing and is located on one side of the test bench; A temperature detection unit, the temperature detection unit comprising a first temperature detection component built into the high-temperature furnace box and a second temperature detection component disposed in an area surrounding the low-temperature loading component; A controller is respectively connected to the high-temperature loading component, the furnace door opening and closing drive mechanism, the lifting drive mechanism, the low-temperature loading component, the first temperature detection component, and the second temperature detection component.

[0006] Furthermore, the furnace door opening and closing drive mechanism includes an electric telescopic mechanism, a pushing structure and a rotating connection structure. The furnace door is connected to the bottom of the insulation box body through the rotating connection structure. The electric telescopic mechanism is connected to the rotating connection structure through the pushing structure and drives the rotating connection structure to rotate. The rotating connection structure drives the furnace door to rotate, and the electric telescopic mechanism is connected to the controller.

[0007] Furthermore, the test bench includes a bench main body and a test product bracket, the test product bracket is arranged on the bench main body, and a sensor wiring channel is arranged inside the test product bracket.

[0008] Furthermore, the test bench includes a slide rail and a horizontal servo motor. The slide rail is slidably connected to the bottom of the insulation box. The horizontal servo motor is connected to the slide rail and can drive the slide rail to slide out of the insulation box through the outer door of the device and retract into the insulation box. The table body is installed on the slide rail, and the horizontal servo motor is connected to the controller.

[0009] Furthermore, the test bench comprises a heat-insulating layer, and the heat-insulating layer is arranged on the upper surface of the bench body.

[0010] Furthermore, the high temperature loading assembly includes a plurality of heating elements, and the plurality of heating elements are arranged around the heat preservation box. The heating elements are connected to the controller, and the heating elements are externally connected to a power source.

[0011] Furthermore, the low-temperature loading component includes a hot and cold air circulation system and a constant temperature fan, the air outlet of the constant temperature fan is connected to the interior of the shell, the air outlet of the hot and cold air circulation system is connected to the air inlet of the constant temperature fan, and the hot and cold air circulation system is connected to the controller.

[0012] Furthermore, the lifting drive mechanism includes a lead screw, a lead screw sleeve and a vertical servo motor, the lead screw is vertically arranged inside the outer shell, the top of the lead screw is fixedly connected to the top of the outer shell, the bottom of the lead screw is connected to the bottom of the outer shell through the vertical servo motor, and the insulation box is connected to the lead screw through the lead screw sleeve.

[0013] Furthermore, an observation window is provided on one side of the heat preservation box body corresponding to the outer door of the device, the observation window is a quartz window, and an electronic filter is provided on the outer side of the observation window.

[0014] The present invention also provides a thermal shock test method for the thermal shock test device, comprising the following steps: Open the outer door of the device, place the test sample on the test bench, and install the test sensor on the test sample; Close the outer door of the device, and open the high-temperature loading component and the low-temperature loading component through the controller; After the high-temperature loading component is heated to a preset temperature and reaches a preset test sample low-temperature loading time, the controller controls the lifting drive mechanism to drive the heat preservation box to descend, and controls the furnace door opening and closing drive mechanism to drive the furnace door to open, and controls the low-temperature loading component to stop loading until the heat preservation box covers the test bench and forms a sealed space with the test bench. During the descent of the heat preservation box, the controller adjusts the power of the high-temperature loading component according to the temperature data detected by the first temperature detection component; After the preset test sample high temperature loading time is reached, the controller controls the lifting drive mechanism to drive the heat preservation box to rise and controls the furnace door opening and closing drive mechanism to drive the furnace door to close; Open the device outer door and take out the test sample.

[0015] The beneficial effects of the present invention are: The thermal shock test device and method from extremely cold environment to extremely hot environment proposed in the present invention can assess the adaptability of a product to a temperature shock environment, and has the advantages of a wide applicable temperature range, a fast temperature rise rate, precise and stable temperature control, simple operation, and high integration. BRIEF DESCRIPTION OF THE DRAWINGS

[0016] Figure 1 An internal structure diagram of a thermal shock test device for extremely cold environment to extremely hot environment in this application; Figure 2 This is a front view of the internal structure of a thermal shock test device for extremely cold environment to extremely hot environment in this application; Figure 3 This is an appearance diagram of a thermal shock test device for extremely cold environment to extremely hot environment; Figure 4This is a schematic diagram of the structure of the test bench bracket for this application.

[0017] In the figure: 1- shell; 2- insulation box; 3- furnace door; 4- test bench; 41- bench body; 42- test product bracket; 43- slide rail; 5- controller; 6- electric telescopic mechanism; 7- rotating connection structure; 8- pushing structure; 9- heating element; 10- hot and cold air circulation system; 11- constant temperature fan; 12- lead screw; 13- lead screw sleeve; 14- vertical servo motor; 15- device outer door; 16- test sample; 17- observation window. DETAILED DESCRIPTION

[0018] In order to make the purpose, technical solutions and advantages of the embodiments of the present invention clearer, the technical solutions in the embodiments of the present invention will be clearly and completely described below in conjunction with the drawings in the embodiments of the present invention. Obviously, the described embodiments are part of the embodiments of the present invention, not all of the embodiments. Generally, the components of the embodiments of the present invention described and shown in the drawings here can be arranged and designed in various different configurations.

[0019] Therefore, the following detailed description of the embodiments of the present invention provided in the accompanying drawings is not intended to limit the scope of the invention claimed for protection, but merely represents selected embodiments of the present invention. Based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the present invention.

[0020] It should be noted that similar reference numerals and letters denote similar items in the following drawings, and therefore, once an item is defined in one drawing, further definition and explanation thereof is not required in subsequent drawings.

[0021] In the description of the present invention, it should be understood that the terms "upper", "lower", "inside", "outside", "left", "right", etc. indicate directions or positional relationships based on the directions or positional relationships shown in the accompanying drawings, or are directions or positional relationships in which the product of the invention is usually placed when in use, or are directions or positional relationships commonly understood by those skilled in the art. These directions or positional relationships are only for the convenience of describing the present invention and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific direction, be constructed and operated in a specific direction, and therefore should not be understood as a limitation on the present invention.

[0022] Furthermore, the terms “first”, “second”, etc. are merely used for distinguishing descriptions and should not be understood as indicating or implying relative importance.

[0023] In the description of the present invention, it is also necessary to explain that, unless otherwise clearly specified and limited, the terms such as "setting" and "connection" should be understood in a broad sense. For example, "connection" can be a fixed connection, a detachable connection, or an integral connection; it can be a mechanical connection or an electrical connection; it can be a direct connection, or an indirect connection through an intermediate medium, or it can be the internal communication of two elements. For ordinary technicians in this field, the specific meanings of the above terms in the present invention can be understood according to specific circumstances.

[0024] The specific implementation modes of the present invention are described in detail below in conjunction with the accompanying drawings.

[0025] like Figure 1 The embodiment of the present invention is a thermal shock test device for extremely cold environment to extremely hot environment, comprising: Shell 1, the shell 1 is a hollow shell, and the shell 1 is made of 310S heat-resistant stainless steel; A high-temperature furnace box, which is arranged at the upper part of the shell 1, and includes an insulation box 2 and a high-temperature loading component arranged in the insulation box 2. The bottom of the insulation box 2 is an openable and closable furnace door 3, and the furnace door 3 is connected to a furnace door 3 opening and closing drive mechanism. The insulation box 2 is connected to a lifting drive mechanism, and the lifting drive mechanism can drive the insulation box 2 to move up and down. The insulation box 2 is made of zirconium oxide fiber modules. When the internal temperature of the insulation box 2 is 1500°C, the temperature of the shell 1 is about 40°C. The thickness of the insulation box 2 is optimally 150mm, and a pulley is provided at the bottom of the shell; A test bench 4, the test bench 4 is arranged at the lower part of the shell 1, and the heat preservation box 2 can cover the test bench 4 when the furnace door 3 is opened under the drive of the lifting drive mechanism, and form a sealed space together with the test bench 4, and the shell 1 is provided with an openable and closable device outer door 15 corresponding to the test bench 4; A low temperature loading assembly, which is arranged at the lower part of the housing 1 and located on one side of the test bench 4; A temperature detection unit, the temperature detection unit comprising a first temperature detection component built into the high-temperature furnace box and a second temperature detection component disposed in an area surrounding the low-temperature loading component; The controller 5 is connected to the high temperature loading component, the furnace door 3 opening and closing drive mechanism, the lifting drive mechanism, the low temperature loading component, the first temperature detection component, and the second temperature detection component. The first temperature detection component and the second temperature detection component are both thermocouples. When the high temperature zone is heating, the air temperature in the high temperature zone is measured by the thermocouple of the first temperature detection component. The connecting wire of the thermocouple returns the measurement signal to the temperature controller 5 through the quick connector at the tail, and then the power controller 5 performs feedback adjustment on the heating of the heating element 9, so as to control the air temperature and heating rate in the high temperature zone until the air temperature in the high temperature zone reaches the target temperature. The low temperature zone is temperature controlled and regulated in the same way through the connection relationship between the thermocouple, the controller 5 and the low temperature recording component.

[0026] like Figure 2 As shown, in some embodiments, the opening and closing driving mechanism of the furnace door 3 includes an electric telescopic mechanism 6, a push structure 8 and a rotating connection structure 7. The furnace door 3 is connected to the bottom of the heat preservation box 2 through the rotating connection structure 7. The electric telescopic mechanism 6 is connected to the rotating connection structure 7 through the push structure 8 and drives the rotating connection structure 7 to rotate. The rotating connection structure 7 drives the furnace door 3 to rotate. The electric telescopic mechanism 6 is connected to the controller 5. The furnace door 3 is a double-opening furnace door 3. The two doors are rotatably connected to the bottom position of the corresponding heat preservation box 2 through the rotating connection structure 7. The electric telescopic mechanism 6 is provided on both sides of the outer surface of the heat preservation box 2. The top rod of the electric telescopic mechanism 6 is connected to the rotating connection structure 7 through the push structure 8. The controller 5 controls the top rod of the electric telescopic mechanism 6 to extend or retract, thereby realizing the opening and closing of the furnace door 3. However, the door opening action can only be triggered when the heat preservation box 2 is descending. During normal use, it remains in a closed state to reduce heat loss. The rotating connection structure 7 is a rotating rod.

[0027] like Figure 4 As shown, in some embodiments, the test bench 4 includes a bench body 41 and a test product bracket 42, wherein the test product bracket 42 is disposed on the bench body 41, and a sensor wiring channel is disposed inside the test product bracket 42. The test product bracket 42 is a hollow metal bracket, and the metal bracket includes three supporting legs and a wiring tube disposed in the middle of the three supporting legs.

[0028] like Figure 1 As shown, in some embodiments, the test bench 4 includes a slide rail 43 and a horizontal servo motor, the slide rail 43 is slidably connected to the bottom of the insulation box 2, the horizontal servo motor is connected to the slide rail 43 and can drive the slide rail 43 to slide out of the insulation box 2 and retract into the insulation box 2 through the outer door 15 of the device, the table body 41 is installed on the slide rail 43, and the horizontal servo motor is connected to the controller 5.

[0029] In some embodiments, the test bench 4 includes a heat-insulating layer, and the heat-insulating layer is disposed on the upper surface of the bench body 41 .

[0030] like Figure 1 As shown, in some embodiments, the high-temperature loading component includes a plurality of heating elements 9, and the plurality of heating elements 9 are arranged around the insulation box. The heating elements 9 are connected to the controller 5, and the heating elements 9 are externally powered. A plurality of slots are opened in the four directions of left, right, front and back on the top of the insulation box body 2. The heating elements 9 are installed through the slots. When the heating elements 9 are energized, they can generate high temperature and high brightness, and the maximum temperature can reach above 1500°C.

[0031] like Figure 1 As shown, in some embodiments, the low temperature loading component includes a cold and hot air circulation system 10 and a constant temperature fan 11, the air outlet of the constant temperature fan 11 is communicated with the interior of the housing 1, the air outlet of the cold and hot air circulation system 10 is connected to the air inlet of the constant temperature fan 11, and the cold and hot air circulation system 10 is connected to the controller 5. The cold and hot air circulation system 10 adopts the existing cold and hot circulation system, and controls the air temperature within a suitable range through the joint regulation of the cooling system and the heating system.

[0032] like Figure 1 As shown, in some embodiments, the lifting drive mechanism includes a lead screw 12, a lead screw sleeve 13 and a vertical servo motor 14, the lead screw 12 is vertically arranged inside the housing 1, the top of the lead screw 12 is fixedly connected to the top of the housing 1, the bottom of the lead screw 12 is connected to the bottom of the housing 1 through the vertical servo motor 14, and the heat preservation box 2 is connected to the lead screw 12 through the lead screw sleeve 13. The lead screw 12 limits the movement direction of the heat preservation box 2 so that it can only move up and down. In this embodiment, the four corners of the heat preservation box 2 are connected with a lifting drive mechanism.

[0033] like Figure 3 As shown, in some embodiments, the thermal insulation box 2 is provided with an observation window 17 on one side corresponding to the device outer door 15, and the observation window 17 is a quartz window, and an electronic filter is provided on the outer side of the observation window 17. This facilitates the observation of the response process of the test piece under temperature shock during the test.

[0034] The embodiment of the present invention also provides a thermal shock test method for the thermal shock test device, comprising the following steps: Open the outer door 15 of the device, place the test sample 16 on the test bench 4, install the test sensor on the test sample 16, and lead it out through the hollow channel inside the metal bracket; the test sensor is connected to an external test device to display the detected data.

[0035] Close the device outer door 15, and open the high temperature loading component and the low temperature loading component through the controller 5; After the high-temperature loading component is heated to a preset temperature and reaches a preset low-temperature loading time of the test sample 16, the controller 5 controls the lifting drive mechanism to drive the heat preservation box 2 to descend, and controls the furnace door 3 opening and closing drive mechanism to drive the furnace door 3 to open, and controls the low-temperature loading component to stop loading until the heat preservation box 2 covers the test bench 4 and forms a sealed space with the test bench 4. During the descent of the heat preservation box 2, the controller 5 adjusts the power of the high-temperature loading component according to the temperature data detected by the first temperature detection component; After the preset high temperature loading time of the test sample 16 is reached, the controller 5 controls the lifting drive mechanism to drive the heat preservation box 2 to rise and controls the opening and closing drive mechanism of the furnace door 3 to drive the furnace door 3 to close; The device outer door 15 is opened and the test sample 16 is taken out.

[0036] Compared with the basket or loading platform of the traditional rapid temperature change box, the test bench 4 of the present device adopts the insulation layer of the high temperature resistant fiber module, and a metal bracket for supporting the test sample 16 is arranged on the top thereof. The metal bracket adopts a hollow design to facilitate the test sensor wiring. Since the temperature shock of the test sample 16 is achieved by rapid switching of the temperature zone during the test, the test sample 16 and the test sensor cable do not move, which greatly reduces the complexity of the test operation.

[0037] At the same time, in order to facilitate the observation of the response process of the test piece under temperature shock during the test, the outer door 15 of the test device is provided with an observation window 17, and the observation window 17 is a quartz glass window. An electronic filter is arranged outside the observation window 17 to solve the problem of the strong light generated under high temperature affecting the direct observation as much as possible. The electronic filter adjusts its filtering effect by adjusting the photoresistor arranged inside, so that better observation effect can be obtained under different strong lights.

[0038] By clicking the opening / closing button of the furnace door 3 through the operation panel of the controller 5, the electric telescopic mechanism 6 is extended / shortened, the wire rod is pushed / pulled, and the furnace door 3 is opened / closed through the push structure 8 and the rotating connection structure 7. During the opening process of the high-temperature furnace door 3, the slide rail 43 and the vertical servo motor of the lifting drive mechanism are exposed to high-temperature air for a short time, so an aerogel heat insulation cover is arranged outside the slide rail 43 and the vertical servo motor, which has good heat insulation and fire retardant properties.

[0039] The present invention discloses a thermal shock test device for extremely cold environment to extremely hot environment based on the idea of ​​heat loading and control between two zones, including a low temperature zone and a high temperature zone. The low temperature zone is located in the lower half of the test device, and is connected to the cold and hot air circulation system 10 through an interface. The temperature of the low temperature zone is controlled by the cold and hot air generated by the constant temperature fan 11, and the temperature range can be -40°C to 20°C; the high temperature zone is located in the upper half of the test device, and the high temperature loading and control are realized by the heating element 9 arranged inside the insulation box 2. The insulation is carried out by using the high temperature resistant fiber module as the material of the insulation box 2, and the maximum temperature can be 1500°C. The high temperature zone and the low temperature zone are controlled and temperature loaded respectively, and the two zones are insulated by the insulation material of the insulation box 2. At the same time, the insulation box 2 is connected to the lifting drive mechanism, and the descending action is completed by the lifting drive mechanism. During the descent, the furnace door 3 of the insulation box 2 is opened, and the test sample 16 can be quickly covered, and a closed space is formed with the experimental table. After the test is completed, the insulation box 2 is controlled to rise by the controller 5, and the furnace door 3 is closed during the rising process. A group of thermocouples are arranged in the low-temperature zone and the high-temperature zone respectively to monitor the difference between the actual temperature of the temperature zone and the set temperature in real time. The power of the hot and cold air circulation system 10 and the electric heating system is controlled by feedback of the detected temperature difference to reach the set temperature. At the same time, when the insulation box 2 descends, the low-temperature loading is stopped.

[0040] The operating steps when the present invention is applied are as follows: 1. Check whether the test equipment is ready; 2. Open the outer door 15 of the test device, and move the test bench 4 to the outermost side through the slide rail 43 and the horizontal servo motor; 3. Fix the test sample 16 on the metal bracket of the test bench 4, lead the corresponding test sensor through the hollow inside of the bracket, and restore the test bench 4 to its original position through the slide rail 43 and the horizontal servo motor; 4. Close the outer door 15 of the test device, set the temperature value of the low temperature zone (-40℃~20℃) and the temperature value of the high temperature zone (normal temperature to 1500℃), and then turn on the cold and hot air circulation system 10 of the low temperature zone and the heating element 9 of the high temperature zone. At this time, the test sample 16 is in the low temperature zone; 5. After the high temperature zone reaches the set temperature (e.g. 1200°C) and is kept warm for 5 minutes, operate the control panel of the controller 5 to control the insulation box 2 to descend through the lifting drive mechanism, and control the furnace door 3 to open. After about 5 seconds, the insulation box 2 descends to the test bench 4, covers the test sample 16, and forms a closed high temperature space with the test bench 4; 6. There is a small amount of heat loss during the descending process of the heat preservation box 2 and the heat preservation stage of the heat preservation box 2. The heat preservation box 2 will immediately adjust the power of the heating element through the controller 5 to heat the test sample 16 to the specified temperature and keep the temperature stable; 7. After the high temperature zone is kept warm for a set time (e.g. 30 minutes), the high temperature zone is powered off and heating is stopped, the heat preservation box 2 is lifted by the lifting drive mechanism, and the furnace door 3 at the bottom of the heat preservation box 2 is controlled to close; 8. The test bench is pushed out by the slide rail 43 and the horizontal servo motor to allow the test sample 16 to cool naturally.

[0041] The above is only a preferred embodiment of the present invention. It should be pointed out that for ordinary technicians in this technical field, several improvements and modifications can be made without departing from the technical principles of the present invention. These improvements and modifications should also be regarded as the scope of protection of the present invention.

Claims

1. A thermal shock test device for extremely cold environment to extremely hot environment, characterized in that: include: An outer shell, wherein the outer shell is a hollow shell; A high-temperature furnace box, the high-temperature furnace box is arranged at the upper part of the shell, the high-temperature furnace box includes a heat preservation box body and a high-temperature loading component arranged in the heat preservation box body, the bottom of the heat preservation box body is an openable and closable furnace door, the furnace door is connected to a furnace door opening and closing drive mechanism, the heat preservation box body is connected to a lifting drive mechanism, and the lifting drive mechanism can drive the heat preservation box body to move up and down; A test bench, the test bench is arranged at the lower part of the shell, and the heat preservation box can cover the test bench when the furnace door is opened under the drive of the lifting drive mechanism, and form a sealed space together with the test bench, and the shell is provided with an openable and closable device outer door corresponding to the test bench; A low temperature loading assembly, the low temperature loading assembly is arranged in the lower part of the housing and is located on one side of the test bench; A temperature detection unit, the temperature detection unit comprising a first temperature detection component built into the high-temperature furnace box and a second temperature detection component disposed in an area surrounding the low-temperature loading component; A controller is respectively connected to the high-temperature loading component, the furnace door opening and closing drive mechanism, the lifting drive mechanism, the low-temperature loading component, the first temperature detection component, and the second temperature detection component.

2. The thermal shock test device from extremely cold environment to extremely hot environment according to claim 1, characterized in that: The furnace door opening and closing drive mechanism includes an electric telescopic mechanism, a push structure and a rotating connection structure. The furnace door is connected to the bottom of the insulation box body through the rotating connection structure. The electric telescopic mechanism is connected to the rotating connection structure through the push structure and drives the rotating connection structure to rotate. The rotating connection structure drives the furnace door to rotate. The electric telescopic mechanism is connected to the controller.

3. The thermal shock test device from extremely cold environment to extremely hot environment according to claim 1, characterized in that: The test bench comprises a bench main body and a test product bracket. The test product bracket is arranged on the bench main body, and a sensor wiring channel is arranged inside the test product bracket.

4. The thermal shock test device from extremely cold environment to extremely hot environment according to claim 3, characterized in that: The test bench includes a slide rail and a horizontal servo motor. The slide rail is slidably connected to the bottom of the insulation box. The horizontal servo motor is connected to the slide rail and can drive the slide rail to slide out of the insulation box through the outer door of the device and retract into the insulation box. The table body is installed on the slide rail, and the horizontal servo motor is connected to the controller.

5. The thermal shock test device from extremely cold environment to extremely hot environment according to claim 3, characterized in that: The test bench comprises a heat-insulating layer, and the heat-insulating layer is arranged on the upper surface of the bench body.

6. The thermal shock test device from extremely cold environment to extremely hot environment according to claim 1, characterized in that: The high temperature loading assembly includes a plurality of heating elements, which are arranged around the heat preservation box. The heating elements are connected to the controller, and the heating elements are externally connected to a power source.

7. The thermal shock test device from extremely cold environment to extremely hot environment according to claim 1, characterized in that: The low-temperature loading component includes a hot and cold air circulation system and a constant temperature fan, the air outlet of the constant temperature fan is connected to the interior of the shell, the air outlet of the hot and cold air circulation system is connected to the air inlet of the constant temperature fan, and the hot and cold air circulation system is connected to the controller.

8. The thermal shock test device from extremely cold environment to extremely hot environment according to claim 7, characterized in that: The lifting drive mechanism includes a lead screw, a lead screw sleeve and a vertical servo motor. The lead screw is vertically arranged inside the outer shell, the top of the lead screw is fixedly connected to the top of the outer shell, the bottom of the lead screw is connected to the bottom of the outer shell through the vertical servo motor, and the insulation box is connected to the lead screw through the lead screw sleeve.

9. The thermal shock test device from extremely cold environment to extremely hot environment according to claim 1, characterized in that: An observation window is provided on one side of the heat preservation box body corresponding to the outer door of the device. The observation window is a quartz window, and an electronic filter is provided on the outer side of the observation window.

10. A thermal shock test method for a thermal shock test device according to any one of claims 1 to 9, characterized in that: The following steps are involved: Open the outer door of the device, place the test sample on the test bench, and install the test sensor on the test sample; Close the outer door of the device, and open the high-temperature loading component and the low-temperature loading component through the controller; After the high-temperature loading component is heated to a preset temperature and reaches a preset test sample low-temperature loading time, the controller controls the lifting drive mechanism to drive the heat preservation box to descend, and controls the furnace door opening and closing drive mechanism to drive the furnace door to open, and controls the low-temperature loading component to stop loading until the heat preservation box covers the test bench and forms a sealed space with the test bench. During the descent of the heat preservation box, the controller adjusts the power of the high-temperature loading component according to the temperature data detected by the first temperature detection component; After the preset test sample high temperature loading time is reached, the controller controls the lifting drive mechanism to drive the heat preservation box to rise and controls the furnace door opening and closing drive mechanism to drive the furnace door to close; Open the device outer door and take out the test sample.

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