Thermal insulation performance testing method, device, equipment and medium

Abstract

The embodiment of the invention discloses a thermal insulation performance testing method, device and equipment and a medium. The method comprises the following steps: acquiring the current environment chamber temperature, and adjusting the initial position temperature of each candidate test position in a to-be-tested cab according to the current environment chamber temperature to obtain the candidate position temperature; when all the candidate position temperatures are the same as the current environment chamber temperature, the candidate position temperatures are updated based on the indoor heat supply amount in the air conditioner running state, and the reference position temperature is obtained; when the reference position temperature at the benchmark test position is the indoor temperature peak value, obtaining the reference position temperature at each candidate test position in the cab to be tested, and obtaining the target position temperature at each candidate test position after the preset test duration in the state that the air conditioner is turned off; and according to the reference position temperature, the target position temperature and the preset test duration, determining a thermal insulation test result of the to-be-tested cab. And the accuracy of testing the thermal insulation performance of the commercial vehicle cab is improved.

Description

Technical Field

[0001] The embodiments of the present invention relate to the technical field of vehicle testing, and particularly to a heat preservation performance testing method, device, equipment and medium. Background Art

[0002] With the progress of automotive technology and the continuous improvement of people's material and cultural needs, people's requirements for in-vehicle comfort have also increased accordingly. In some low-temperature and cold environments, cars using materials with good heat preservation performance can increase the difficulty of the transfer of external cold loads such as low-temperature gases into the cab, while improving the comfort of the occupants in the cab and effectively reducing the energy consumption of the in-vehicle air-conditioning system. For new energy vehicles such as pure electric and hybrid vehicles, it will bring a higher cruising range. For commercial vehicle cabs, heat preservation performance is particularly important, which has a positive effect on improving the comfort of the occupants in the cab and extending the cruising range of new energy vehicles. Therefore, how to improve the accuracy of the heat preservation performance test of commercial vehicle cabs is crucial. Summary of the Invention

[0003] The present invention provides a heat preservation performance testing method, device, equipment and medium to improve the accuracy of the heat preservation performance test of commercial vehicle cabs.

[0004] According to one aspect of the present invention, a heat preservation performance testing method is provided, including:

[0005] Obtain the current environmental chamber temperature of the environmental chamber where the cab to be tested is located, and adjust the initial position temperature at each candidate test position in the cab to be tested according to the current environmental chamber temperature to obtain the candidate position temperature;

[0006] When each of the candidate position temperatures is the same as the current environmental chamber temperature, adjust the vehicle air-conditioning state in the cab to be tested to the air-conditioning running state, and update the candidate position temperature based on the indoor heat supply amount in the air-conditioning running state to obtain the reference position temperature;

[0007] When the reference position temperature at the reference test position is the indoor temperature peak value, obtain the reference position temperature at each candidate test position in the cab to be tested, adjust the vehicle air-conditioning state in the cab to be tested to the air-conditioning off state, and obtain the target position temperature at each candidate test position after a preset test duration;

[0008] Determine the heat preservation test result of the cab to be tested according to the reference position temperature, the target position temperature and the preset test duration.

[0009] According to another aspect of the present invention, a heat preservation performance testing device is provided, including:

[0010] An initial position temperature adjustment module, configured to obtain the current environmental chamber temperature of the environmental chamber where the cab to be tested is located, and adjust the initial position temperature at each candidate test position in the cab to be tested according to the current environmental chamber temperature to obtain candidate position temperatures;

[0011] A candidate position temperature update module, configured to, when each of the candidate position temperatures is the same as the current environmental chamber temperature, adjust the vehicle air-conditioning state in the cab to be tested to an air-conditioning running state, and update the candidate position temperatures based on the indoor heat supply amount in the air-conditioning running state to obtain reference position temperatures;

[0012] A target position temperature acquisition module, configured to, when the reference position temperature at the benchmark test position is the peak indoor temperature, acquire the reference position temperatures at each candidate test position in the cab to be tested, adjust the vehicle air-conditioning state in the cab to be tested to an air-conditioning off state, and acquire the target position temperatures at each candidate test position after a preset test duration;

[0013] A heat preservation test result determination module, configured to determine the heat preservation test result of the cab to be tested according to the reference position temperature, the target position temperature, and the preset test duration.

[0014] According to another aspect of the present invention, there is provided an electronic device, including:

[0015] One or more processors;

[0016] A memory, configured to store one or more programs;

[0017] When the one or more programs are executed by the one or more processors, the one or more processors are enabled to execute any heat preservation performance test method provided by the embodiments of the present invention.

[0018] According to another aspect of the present invention, there is provided a computer-readable storage medium storing computer instructions for causing a processor to implement any heat preservation performance test method provided by the embodiments of the present invention when executed.

[0019] An embodiment of the present invention provides a heat preservation performance test solution. By obtaining the current environmental chamber temperature of the environmental chamber where the cab to be tested is located, and according to the current environmental chamber temperature, adjusting the initial position temperature at each candidate test position in the cab to be tested to obtain the candidate position temperature; when each candidate position temperature is the same as the current environmental chamber temperature, adjusting the vehicle air conditioner state in the cab to be tested to the air conditioner running state, and based on the indoor heat supply amount under the air conditioner running state, updating the candidate position temperature to obtain the reference position temperature; when the reference position temperature at the reference test position is the indoor temperature peak value, obtaining the reference position temperature at each candidate test position in the cab to be tested, and adjusting the vehicle air conditioner state in the cab to be tested to the air conditioner off state, obtaining the target position temperature at each candidate test position after a preset test duration; determining the heat preservation test result of the cab to be tested according to the reference position temperature, the target position temperature and the preset test duration. In the above solution, the initial position temperature in the cab to be tested is subjected to the same temperature treatment according to the current environmental chamber temperature, and then according to the on and off states of the air conditioner in the cab to be tested, the temperature change at each candidate test position in the cab to be tested is controlled. Through the reference position temperature when the cab to be tested is in a stable temperature state under the air conditioner on state, the target position temperature of the cab to be tested after a preset test duration under the air conditioner off state, and the preset test duration, the heat preservation performance of the cab to be tested is verified to obtain the heat preservation test result, improving the accuracy of the heat preservation performance test of the commercial vehicle cab.

[0020] It should be understood that the content described in this part is not intended to identify the key or important features of the embodiments of the present invention, nor is it used to limit the scope of the present invention. Other features of the present invention will become easily understood through the following description. BRIEF DESCRIPTION OF THE DRAWINGS

[0021] Figure 1 is a flowchart of a heat preservation performance test method provided in Embodiment 1 of the present invention;

[0022] Figure 2 is a flowchart of a heat preservation performance test method provided in Embodiment 2 of the present invention;

[0023] Figure 3A is a schematic diagram of the relationship between the cab to be tested and the environmental chamber provided in Embodiment 3 of the present invention;

[0024] Figure 3B is a schematic structural diagram of a heat preservation performance test device for the cab to be tested provided in Embodiment 3 of the present invention;

[0025] Figure 4 is a schematic structural diagram of a heat preservation performance test device provided in Embodiment 4 of the present invention;

[0026] Figure 5 It is a schematic structural diagram of an electronic device for implementing a heat preservation performance test method provided in Embodiment 5 of the present invention. Detailed implementation manners

[0027] The present invention will be further described in detail below with reference to the accompanying drawings and embodiments. It can be understood that the specific embodiments described herein are only used to explain the present invention, rather than limiting the present invention. Additionally, it should be noted that for the sake of description, only parts related to the present invention are shown in the accompanying drawings, rather than all structures.

[0028] Embodiment 1

[0029] Figure 1 It is a flowchart of a heat preservation performance test method provided in Embodiment 1 of the present invention. This embodiment is applicable to the situation of verifying the heat preservation performance of a commercial vehicle cab. This method can be executed by a heat preservation performance test device, which can be implemented in a software and / or hardware manner and can be configured in an electronic device with a heat preservation performance test function.

[0030] Refer to Figure 1 The heat preservation performance test method shown, including:

[0031] S110. Obtain the current environmental chamber temperature of the environmental chamber where the cab to be tested is located, and adjust the initial position temperature at each candidate test position in the cab to be tested according to the current environmental chamber temperature to obtain the candidate position temperature.

[0032] Among them, the cab to be tested refers to the cab used for heat preservation performance testing. Exemplarily, the cab to be tested can be the cab of a commercial vehicle. The environmental chamber, namely the high and low temperature environmental chamber, can be used to simulate the external environmental temperature of the cab to be tested. The current environmental chamber temperature refers to the temperature inside the environmental chamber.

[0033] Among them, the candidate test position refers to the position in the cab to be tested for heat preservation performance testing. Exemplarily, the candidate test positions include the indoor driver's head position, the indoor ceiling position, the indoor sidewall position, the indoor floor position, and the interior surface position.

[0034] Among them, the indoor driver's head position refers to the head position of the driver in the cab to be tested. The indoor ceiling position refers to the position at the ceiling in the cab to be tested. The indoor sidewall position refers to the peripheral position around the driver in the cab to be tested. The indoor floor position refers to the position at the floor in the cab to be tested. The interior surface position refers to the position at the surface of the interior ornaments (such as the material layer covering components such as seats, steering wheels, instrument panels, and door panels) in the cab to be tested.

[0035] It can be understood that by introducing the indoor driver's head position, the indoor ceiling position, the indoor side wall position, the indoor floor position, and the interior surface position, the comprehensiveness of the candidate test positions is improved.

[0036] Among them, the initial position temperature refers to the original temperature at each candidate test position in the cab to be tested. The candidate position temperature refers to the temperature obtained after adjusting the temperature of the cab to be tested based on the current environmental chamber temperature.

[0037] Exemplarily, place the cab to be tested in the environmental chamber, and set measurement sensors at each candidate test position in the cab to be tested; when the temperature in the environmental chamber reaches the current environmental chamber temperature, open the door of the cab to be tested for the same-temperature treatment for a preset internal and external duration, and then close the door of the cab to be tested and perform the same-temperature treatment for a preset indoor duration to adjust the initial position temperature at each candidate test position in the cab to be tested to the candidate position temperature.

[0038] Among them, the measurement sensor can be used to collect the temperature at the corresponding candidate test position. The preset internal and external duration refers to the duration of the same-temperature treatment between the cab to be tested and the external environment. The preset indoor duration refers to the duration of the same-temperature treatment inside the cab to be tested. The embodiments of the present invention do not make any limitations on the magnitudes of the preset internal and external duration and the preset indoor duration, which can be set by those skilled in the art according to experience or needs, or determined through a large number of experiments. Exemplarily, the preset internal and external duration and the preset indoor duration can be the same or different, and the embodiments of the present invention do not make specific limitations in this regard. For example, the preset internal and external duration and the preset indoor duration can be the same, both being 2h.

[0039] In an alternative embodiment, the method further includes: obtaining the basic performance data of the cab to be tested, and determining the basic performance test result of the cab to be tested according to the basic performance data; among them, the basic performance data includes the air-conditioning performance data, the air duct performance data, the switch performance data, and the cab airtightness data of the cab to be tested.

[0040] Among them, the basic performance data refers to the performance attribute data of the cab to be tested. Exemplarily, the basic performance data includes the air-conditioning performance data, the air duct performance data, the switch performance data, and the cab airtightness data of the cab to be tested.

[0041] Among them, the air-conditioning performance data refers to the performance data of the air conditioner in the cab to be tested. For example, the air-conditioning performance data can be the performance data of the components of the air-conditioning system. The duct performance data refers to the performance data of the air-conditioning ducts in the cab to be tested. For example, the duct performance data can be the performance data of the joints of the air-conditioning ducts and the performance data of the outlet valves. The switch performance data refers to the performance data of the switches in the cab to be tested. For example, the switches can include the temperature control switch, the air volume control switch, the mode switch, and the internal and external circulation control switch, etc. The cab airtightness data refers to the airtightness data of the cab to be tested.

[0042] Among them, the basic performance test result refers to the result obtained from the basic performance test of the cab to be tested. Exemplarily, the basic performance test result can be that the basic performance test is successful or the basic performance test fails.

[0043] Exemplarily, check and prepare the cab to be tested, and adjust the cab to be tested and its equipment to meet the technical condition requirements; confirm that the components of the air-conditioning system are complete, leak-free, and work effectively; confirm that the joints of the air-conditioning ducts are airtight and the outlet valves operate flexibly; confirm that the temperature control switch, the air volume control switch, the mode switch, and the internal and external circulation control switch operate normally; the airtightness of the cab to be tested meets the technical condition requirements. If all the above tests pass, it is determined that the basic performance test result is that the basic performance test is successful; if not, it is that the basic performance test fails.

[0044] Furthermore, for the basic performance test result, conduct subsequent heat preservation tests on the cab to be tested. Specifically, conduct heat preservation tests on the cab to be tested with a successful basic performance test.

[0045] It can be understood that by pre-conducting the basic performance test on the cab to be tested, the applicability of the cab to be tested is ensured, and the accuracy of the subsequent heat preservation test on the cab to be tested is improved; at the same time, through the air-conditioning performance data, duct performance data, switch performance data, and cab airtightness data of the cab to be tested, the basic performance test result is determined, realizing the basic performance test of the cab to be tested from multiple dimensions and improving the accuracy of the determined basic performance test result.

[0046] S120. When the temperatures at each candidate position are the same as the current environmental chamber temperature respectively, adjust the vehicle air-conditioning state in the cab to be tested to the air-conditioning operation state, and update the candidate position temperature based on the indoor heat supply amount in the air-conditioning operation state to obtain the reference position temperature.

[0047] Among them, the vehicle air-conditioning state can characterize the operating state of the air conditioner in the cab to be tested. The air-conditioning operating state can indicate that the air conditioner in the cab to be tested is in the operating state. Preferably, the air-conditioning operating state in the embodiments of the present invention is the maximum operating state of the air conditioner in the cab to be tested. For example, the air-conditioning operating state is the state under the maximum external circulation heating, foot-blowing state, and the highest gear air volume.

[0048] Among them, the indoor heat supply refers to the heat provided by the air conditioner in the cab to be tested. The reference position temperature refers to the candidate position temperature that continuously changes with the change of the indoor heat supply.

[0049] Exemplarily, start the heating and cooling test bench to provide a heat source for the air-conditioning box and heat the cab to be tested. Among them, the heat source is adjusted according to the antifreeze flow rate and temperature under the actual vehicle operating state; start the automatic air-conditioning panel and adjust the mode to the maximum external circulation heating, foot-blowing state, and the highest gear air volume (such as the 5th gear air volume).

[0050] It should be noted that a preset environmental chamber floating temperature can be set. The embodiments of the present invention do not make any limitation on the magnitude of the preset environmental chamber floating temperature, which can be set by those skilled in the art according to the situation or needs, or determined through a large number of repeated tests. For example, the preset environmental chamber floating temperature is ±2°C.

[0051] Specifically, when each candidate position temperature is within the interval determined by the current environmental chamber temperature and the preset environmental chamber floating temperature, adjust the vehicle air-conditioning state in the cab to be tested to the air-conditioning operating state, and update the candidate position temperature based on the indoor heat supply under the air-conditioning operating state to obtain the reference position temperature.

[0052] S130. When the reference position temperature at the reference test position is the indoor temperature peak value, obtain the reference position temperature at each candidate test position in the cab to be tested, adjust the vehicle air-conditioning state in the cab to be tested to the air-conditioning off state, and obtain the target position temperature at each candidate test position after a preset test duration.

[0053] Among them, the reference test position can be understood as a candidate test position used to judge that the temperature in the cab to be tested no longer changes. Exemplarily, the reference test position can be the position of the driver's head in the cab. The indoor temperature peak value refers to the highest temperature in the cab to be tested.

[0054] It should be noted that a preset peak floating temperature can be set. The embodiments of the present invention do not make any limitation on the magnitude of the preset peak floating temperature, which can be set by those skilled in the art according to the situation or needs, or determined through a large number of repeated tests. For example, the preset peak floating temperature is ±1°C.

[0055] Specifically, when the reference position temperature at the benchmark test position is within the range determined by the indoor temperature peak and the preset peak floating temperature, obtain the reference position temperature at each candidate test position in the cab to be tested, and adjust the vehicle air-conditioning state in the cab to be tested to the air-conditioning off state. After obtaining the preset test duration, obtain the target position temperature at each candidate test position.

[0056] Among them, the air-conditioning off state can represent that the air conditioner in the cab to be tested is in the off state. The preset test duration refers to the duration set in advance for leaving the cab to be tested static after the air conditioner is turned off. The embodiments of the present invention do not make any limitation on the size of the preset test duration, which can be set by those skilled in the art according to experience or needs, or determined through a large number of tests. For example, the preset test duration can be 2h. The target position temperature refers to the temperature at each candidate test position in the cab to be tested after the preset test duration.

[0057] In an alternative embodiment, when the reference position temperature at the benchmark test position is the indoor temperature peak, obtaining the reference position temperature at each candidate test position in the cab to be tested includes: determining the benchmark test position from the candidate test positions, and when the reference position temperature at the benchmark test position reaches the indoor temperature peak, verifying the reference position temperature at the benchmark test position according to the preset temperature duration to obtain a verification result; if the verification result is verification passed, then obtain the reference position temperature at each candidate test position in the cab to be tested.

[0058] Among them, the preset temperature duration refers to the duration set in advance for which the reference position temperature at the basic test position needs to maintain the indoor temperature peak. The embodiments of the present invention do not make any limitation on the size of the preset temperature duration, which can be set by those skilled in the art according to experience or needs. For example, the preset temperature duration can be 10min.

[0059] Among them, the verification result can represent whether the temperature in the cab to be tested has stabilized. The verification result can be verification passed or verification failed. Verification passed can represent that the temperature in the cab to be tested has stabilized, that is, it no longer changes. Verification failed can represent that the temperature in the cab to be tested has not stabilized, that is, there is still change.

[0060] Exemplarily, the reference position temperature at each candidate test position is obtained in real time through a data collector. When the reference position temperature at the benchmark test position reaches the indoor temperature peak and the aforementioned reference position temperature has been stable for the preset temperature duration, the heating stage ends, that is, the reference position temperature at each candidate test position at this time can be obtained. Among them, the data collector can be used to obtain the corresponding position temperature from the measurement sensors at each candidate test position. The data collector is communicatively connected to the measurement sensors.

[0061] Specifically, any candidate test position is used as a reference test position; when the temperature at the reference position at the reference test position reaches the indoor temperature peak, it is determined whether the stable duration of the reference position temperature reaching the indoor temperature peak reaches a preset temperature duration. If it reaches, the reference position temperatures of each candidate test position in the cab to be tested at this time are obtained; if it does not reach, the temperature change in the cab to be tested is continuously monitored.

[0062] It can be understood that by introducing a preset temperature duration, the stability of the temperature in the cab to be tested is verified to ensure the stability of the temperature in the cab to be tested and improve the accuracy of the obtained reference position temperature.

[0063] Specifically, the automatic air-conditioning panel is turned off. After the cab to be tested is statically placed in the current environmental chamber temperature for a preset test duration, the target position temperatures at each candidate test position are obtained through a data acquisition instrument. Among them, the automatic air-conditioning panel can be used to adjust the vehicle air-conditioning state.

[0064] S140. Determine the heat preservation test result of the cab to be tested according to the reference position temperature, the target position temperature, and the preset test duration.

[0065] Among them, the heat preservation test result refers to the result of the heat preservation test of the cab to be tested. Exemplarily, the heat preservation test result can be that the heat preservation test passes or the heat preservation test fails. The heat preservation test passing means that there is no abnormality in the heat preservation performance of the cab to be tested. The heat preservation test failing means that there is an abnormality in the heat preservation performance of the cab to be tested.

[0066] It should be noted that if the heat preservation test result is that the heat preservation test fails, the heat preservation test result can also include the candidate test positions where there are abnormalities in the heat preservation performance of the cab to be tested.

[0067] An embodiment of the present invention provides a heat preservation performance test solution. By obtaining the current ambient chamber temperature of the ambient chamber where the cab to be tested is located, and according to the current ambient chamber temperature, adjusting the initial position temperature at each candidate test position in the cab to be tested to obtain the candidate position temperature; when the candidate position temperatures are the same as the current ambient chamber temperature respectively, adjusting the vehicle air conditioner state in the cab to be tested to the air conditioner operating state, and updating the candidate position temperature based on the indoor heat supply amount in the air conditioner operating state to obtain the reference position temperature; when the reference position temperature at the reference test position is the indoor temperature peak value, obtaining the reference position temperature at each candidate test position in the cab to be tested, and adjusting the vehicle air conditioner state in the cab to be tested to the air conditioner off state, obtaining the target position temperature at each candidate test position after a preset test duration; determining the heat preservation test result of the cab to be tested according to the reference position temperature, the target position temperature and the preset test duration. In the above solution, the initial position temperature in the cab to be tested is made the same as the ambient temperature through the current ambient chamber temperature, and then according to the on and off states of the air conditioner in the cab to be tested, the temperature change at each candidate test position in the cab to be tested is controlled. Through the reference position temperature when the cab to be tested is in a temperature stable state under the air conditioner on state, the target position temperature of the cab to be tested after a preset test duration under the air conditioner off state, and the preset test duration, the heat preservation performance of the cab to be tested is verified to obtain the heat preservation test result, improving the accuracy of the heat preservation performance test of the commercial vehicle cab.

[0068] Embodiment 2

[0069] Figure 2 It is a flowchart of a heat preservation performance test method provided by Embodiment 2 of the present invention. On the basis of the above embodiments, further, the operation of "determining the heat preservation test result of the cab to be tested according to the reference position temperature, the target position temperature and the preset test duration" is refined into "determining the position temperature difference at the corresponding candidate test position according to the reference position temperature and the target position temperature at each candidate test position; determining the temperature change rate at the corresponding candidate test position according to the position temperature difference and the preset test duration at each candidate test position; determining whether there is a target test position according to the temperature change rate at each candidate test position, and if so, determining the heat preservation test result of the cab to be tested according to the target test position" to improve the determination mechanism of the heat preservation test result. It should be noted that for parts not detailed in the embodiments of the present invention, reference can be made to the descriptions of other embodiments.

[0070] See Figure 2 The heat preservation performance test method shown includes:

[0071] S210. Obtain the current environmental chamber temperature of the environmental chamber where the cab to be tested is located, and adjust the initial position temperature at each candidate test position in the cab to be tested according to the current environmental chamber temperature to obtain the candidate position temperature.

[0072] S220. When the candidate position temperatures are the same as the current environmental chamber temperature respectively, adjust the vehicle air-conditioning state in the cab to be tested to the air-conditioning running state, and update the candidate position temperature based on the indoor heat supply amount under the air-conditioning running state to obtain the reference position temperature.

[0073] S230. When the reference position temperature at the reference test position is the indoor temperature peak value, obtain the reference position temperature at each candidate test position in the cab to be tested, adjust the vehicle air-conditioning state in the cab to be tested to the air-conditioning off state, and obtain the target position temperature at each candidate test position after a preset test duration.

[0074] S240. Determine the position temperature difference at the corresponding candidate test position according to the reference position temperature and the target position temperature at each candidate test position.

[0075] Wherein, the position temperature difference refers to the temperature difference between the reference position temperature and the target position temperature corresponding to the candidate test position.

[0076] Specifically, for any candidate test position, determine the position temperature difference at the candidate test position according to the reference position temperature and the target position temperature at the candidate test position.

[0077] S250. Determine the temperature change rate at the corresponding candidate test position according to the position temperature difference and the preset test duration at each candidate test position.

[0078] Wherein, the temperature change rate can be used to characterize the temperature drop degree at the corresponding candidate test position.

[0079] Specifically, for any candidate test position, take the ratio between the position temperature difference and the preset test duration at the candidate test position as the temperature change rate at the candidate test position.

[0080] S260. Determine whether there is a target test position according to the temperature change rate at each candidate test position. If so, determine the heat preservation test result of the cab to be tested according to the target test position.

[0081] Wherein, the target test position refers to the candidate test position with abnormal heat preservation performance.

[0082] In an alternative embodiment, determining whether there is a target test position according to the temperature change rate at each candidate test position includes: for any candidate test position, if the temperature change rate at the candidate test position is greater than the corresponding preset change rate threshold, then the candidate test position is taken as the target test position; if the temperature change rate at the candidate test position is less than the corresponding preset change rate threshold, then the candidate test position is prohibited from being taken as the target test position.

[0083] Among them, the embodiments of the present invention do not make any limitation on the magnitude of the preset change rate threshold, which can be set by those skilled in the art according to experience or needs, or determined repeatedly through a large number of tests. It should be noted that the preset change rate thresholds corresponding to different candidate test positions may be the same or different, and the embodiments of the present invention do not make specific limitations on this.

[0084] Specifically, if there is at least one target test position, it is determined that the heat preservation test result is a heat preservation test failure; if there is no target test position, it is determined that the heat preservation test result is a test success.

[0085] It can be understood that by introducing the preset change rate threshold and determining whether the candidate test position is the target test position according to the preset change rate threshold, the accuracy of the determined target test position is improved.

[0086] The embodiments of the present invention provide a heat preservation performance test solution. By refining the operation of determining the heat preservation test result of the cab to be tested according to the reference position temperature, the target position temperature, and the preset test duration into determining the position temperature difference at each candidate test position according to the reference position temperature and the target position temperature at each candidate test position; determining the temperature change rate at each candidate test position according to the position temperature difference and the preset test duration at each candidate test position; determining whether there is a target test position according to the temperature change rate at each candidate test position, and if so, determining the heat preservation test result of the cab to be tested according to the target test position, the determination mechanism of the heat preservation test result is improved. In the above solution, by determining whether there is a target test position according to the temperature change rate, and if so, determining the heat preservation test result based on the target test position, the heat preservation test result is determined on the basis of the temperature drop situation at each candidate test position, and the accuracy of the determined heat preservation test result is improved.

[0087] Embodiment III

[0088] On the basis of the above embodiments, the embodiments of the present invention also provide an alternative example. It should be noted that for parts not detailed in the embodiments of the present invention, reference can be made to the descriptions of other embodiments.

[0089] In the vehicle performance whole-vehicle test, the test of the cab thermal insulation performance is very important. The cab thermal insulation performance refers to the ability of the driver and passengers of the vehicle to isolate the influence of the external environmental temperature during daily rides in the vehicle. When conducting the thermal insulation performance test, the key data to be measured include the temperature changes inside the vehicle under the influence of factors such as the temperature inside and outside the vehicle and the wind speed. By conducting laboratory simulation tests and real-scene tests on these key data, the adaptability of the cab to different external temperature environments can be judged, providing data support to optimize the design and configuration of the cab thermal insulation performance.

[0090] In addition, effective thermal insulation performance tests require accurate measurement and monitoring of the data inside and outside the cab to ensure the accuracy and reliability of the test data, so as to ensure the scientific nature and operability of the test results. Therefore, the importance of obtaining the data related to the cab thermal insulation performance for the cab thermal insulation performance test cannot be ignored.

[0091] At present, although there are some related designs for improving the cab thermal insulation performance, as well as design schemes and test methods for the thermal insulation performance of some components, there is a lack of test methods for obtaining the data related to the cab performance through tests on the whole vehicle or the cab. Especially for the cab vehicles of commercial vehicles exported to cold regions such as Russia, the thermal insulation performance design is particularly important.

[0092] The present invention mainly relates to a test method for verifying the cab thermal insulation performance. Using this method, the cab thermal insulation performance test verification is carried out in the early stage of product development, and the cab thermal insulation performance is improved through the optimization of the design scheme.

[0093] The acquisition method described in the present invention can be applied in the fields of vehicle performance analysis, vehicle thermal insulation performance analysis, cab thermal insulation performance test, and vehicle thermal insulation component development and manufacturing; particularly related to the technical field of commercial vehicle cab thermal insulation performance verification test.

[0094] This test method stipulates the thermal insulation performance test of commercial vehicles in the cab state, including the test conditions of the thermal insulation performance test, the arrangement of sensors, the measured parameters, the processing of test data, and the recording of the test process. Through this set of complete test methods, the cab thermal insulation performance test verification is guided.

[0095] Exemplarily, see Figure 3ASchematic diagram of the relationship between the cab to be tested and the environmental chamber. Among them, ① represents the high and low temperature environmental chamber, ② represents the low temperature air in the environmental chamber, ③ represents the defrosting air duct, ④ represents the foot blowing air duct, ⑤ represents the cab to be tested, ⑥ represents the hot air in the cab to be tested, and ⑦ represents the bracket of the cab to be tested. The necessary conditions for the insulation performance test of a commercial vehicle cab are as follows: there is a temperature difference between the inside and outside of the cab, that is, the hot air inside the cab is significantly higher than the low temperature air in the environmental chamber outside the cab; there is air flow between the inside and outside of the cab, and the low temperature in the environmental chamber continuously enters the cab.

[0096] Exemplarily, to solve the problem of the lack of a test method for using a whole vehicle or cab to test and collect data related to insulation performance, the present invention provides a test and collection method for using a cab to obtain data related to insulation performance. Specifically, the process of the insulation performance test: with the temperature outside the cab to be tested fixed, the temperature inside the cab to be tested is gradually reduced through the sheet metal, interior trim, and glass of the cab to be tested, and the temperature of the head inside the cab to be tested gradually decreases from a high level; under the same test conditions and within the same test time, the faster the temperature inside the cab to be tested decreases, the worse the insulation performance of the cab to be tested. The quality of the insulation performance of the cab to be tested is related to the insulation materials and structures used. Good insulation materials usually have characteristics such as light weight, looseness, porosity, and low thermal conductivity.

[0097] Specifically, the method for testing the insulation performance of the cab is as follows: conduct inspections and preparations on the cab to be tested, and adjust the cab to be tested and its equipment to meet the requirements of technical conditions; confirm that the components of the air conditioning system are complete, without leakage, and work effectively; confirm that the joints of each air conditioning air duct are airtight, and the operation of each air outlet valve is flexible; confirm that the temperature control switch, air volume control switch, mode switch, and internal and external circulation control switch operate normally; the airtightness of the cab to be tested meets the requirements of technical conditions.

[0098] Further, refer to Figure 3BSchematic structural diagram of the thermal insulation performance test device for the cab to be tested. Among them, 1 represents the air-conditioning duct, 2 represents the automatic air-conditioning panel, 3 represents the high and low temperature environmental chamber, 4 represents the measurement sensor, 5 represents the data acquisition instrument, 6 represents the cab to be tested, 7 represents the air-conditioning box body, and 8 represents the heating and cooling test bench. Specifically, measurement sensors 4 are arranged at the candidate test positions inside the cab 6 to be tested, including candidate test positions such as the position of the driver's head inside the cab, the position of the ceiling inside the cab, the position of the side wall inside the cab, the position of the floor inside the cab, and the position of the interior surface; connect the data acquisition instrument 5 to debug and calibrate the measurement sensor 4; move the cab 6 to be tested into the high and low temperature environmental chamber 3; set the temperature of the high and low temperature environmental chamber 3 to the current environmental chamber temperature, such as (T1±2)°C. When the temperature of the high and low temperature environmental chamber 3 reaches (T1±2)°C, open the door of the cab 6 to be tested and start the same-temperature treatment for 2 hours, then close the door of the cab 6 to be tested and conduct the same-temperature treatment for another 2 hours; start the heating and cooling test bench 8 to provide heat source for the air-conditioning box body 7 so as to supply heat to the cab 6 to be tested, and the heat source is set and adjusted according to the antifreeze flow rate and temperature in the actual vehicle state; adjust the air-conditioning mode to the maximum external circulation heating, foot-blowing state and 5th gear air volume through the automatic air-conditioning panel 2; through the data acquisition instrument 5, when the average temperature at the position of the driver's head inside the cab 6 to be tested reaches the indoor temperature peak value, such as T2±1°C, stabilize the preset temperature duration, such as 10 minutes, and then the heating stage ends; conduct the cab thermal insulation test, close the automatic air-conditioning panel 2, and place the cab 6 to be tested statically in the environment of T1±2°C for the preset test duration, such as 2 hours; display and record the temperature at the target position through the data acquisition instrument 5; data processing, after 2 hours, the temperature at each candidate test position drops to the target position temperature. Through calculation, the temperature drop rate (i.e., the temperature change rate) at different candidate test positions can be obtained, and subsequently, the weak points of the thermal insulation performance can be found by comparing different vehicle models.

[0099] Among them, in the embodiment of the present invention, the normal heating of the air conditioner inside the cab to be tested under the actual vehicle operation state is jointly simulated by the heating and cooling test bench 8, the air-conditioning box body 7 and the air-conditioning duct 1. The actual vehicle operation state can represent the actual operation situation of the vehicle. Among them, the heating and cooling test bench 8 can be understood as the engine of the vehicle, and the heating and cooling test bench 8 provides energy for the air-conditioning box body 7 and the air-conditioning duct 1. The heating and cooling test bench 8 is connected to the air-conditioning box body 7 through an ethylene glycol pipeline and a refrigeration pipeline.

[0100] Among them, both ±1 and ±2 represent the floating temperature up and down, which can be set by technicians according to experience or needs.

[0101] A heat preservation test scheme provided by an embodiment of the present invention includes a method for verifying the heat preservation performance of a cab, specifically including the test conditions of the heat preservation performance test, the arrangement of sensors, the measured parameters, the processing of test data, and the recording of the test process. Associated data collection is realized through devices such as sensors, and these devices can monitor and record the key data of the temperature change in the cab over time. By analyzing the collected data, the true situation of the vehicle's heat preservation performance can be more directly reflected. Moreover, in this collection method, the relevant variables of the cab and the environment can be adjusted in real time according to specific needs, without the need to drive in a real road environment, which can save the resources and time consumed by data collection. It helps designers better optimize the interior design and material selection of the vehicle, and ultimately improve the heat preservation performance of the whole vehicle.

[0102] Embodiment Four

[0103] Figure 4 It is a schematic structural diagram of a heat preservation performance test device provided by Embodiment Four of the present invention. This embodiment is applicable to the situation of verifying the heat preservation performance of a commercial vehicle cab. This method can be executed by a heat preservation performance test device, and this device can be implemented in a software and / or hardware manner and can be configured in an electronic device with a heat preservation performance test function.

[0104] As Figure 4 shown, the device includes: an initial position temperature adjustment module 410, a candidate position temperature update module 420, a target position temperature acquisition module 430, and a heat preservation test result determination module 440. Among them,

[0105] The initial position temperature adjustment module 410 is used to obtain the current environmental chamber temperature of the environmental chamber where the cab to be tested is located, and adjust the initial position temperature at each candidate test position in the cab to be tested according to the current environmental chamber temperature to obtain the candidate position temperature;

[0106] The candidate position temperature update module 420 is used to adjust the vehicle air-conditioning state in the cab to be tested to the air-conditioning operation state when each candidate position temperature is the same as the current environmental chamber temperature, and update the candidate position temperature based on the indoor heat supply amount in the air-conditioning operation state to obtain the reference position temperature;

[0107] The target position temperature acquisition module 430 is used to obtain the reference position temperature at each candidate test position in the cab to be tested when the reference position temperature at the reference test position is the indoor temperature peak value, and adjust the vehicle air-conditioning state in the cab to be tested to the air-conditioning off state, and obtain the target position temperature at each candidate test position after a preset test duration;

[0108] A heat preservation test result determination module 440, configured to determine a heat preservation test result of the cab to be tested according to the temperature at the reference position, the temperature at the target position, and the preset test duration.

[0109] An embodiment of the present invention provides a heat preservation performance test solution. By obtaining the current environmental chamber temperature of the environmental chamber where the cab to be tested is located, and according to the current environmental chamber temperature, adjusting the initial position temperature at each candidate test position in the cab to be tested to obtain the candidate position temperature; when the candidate position temperatures are the same as the current environmental chamber temperature respectively, adjusting the vehicle air conditioner state in the cab to be tested to the air conditioner running state, and updating the candidate position temperature based on the indoor heat supply amount in the air conditioner running state to obtain the reference position temperature; when the reference position temperature at the reference test position is the indoor temperature peak value, obtaining the reference position temperature at each candidate test position in the cab to be tested, and adjusting the vehicle air conditioner state in the cab to be tested to the air conditioner off state, obtaining the target position temperature at each candidate test position after the preset test duration; determining the heat preservation test result of the cab to be tested according to the reference position temperature, the target position temperature, and the preset test duration. In the above solution, the initial position temperature in the cab to be tested is subjected to the same temperature treatment according to the current environmental chamber temperature, and then according to the on and off states of the air conditioner in the cab to be tested, the temperature change at each candidate test position in the cab to be tested is controlled. Through the reference position temperature when the cab to be tested is in a temperature stable state under the air conditioner on state, the target position temperature of the cab to be tested after the preset test duration under the air conditioner off state, and the preset test duration, the heat preservation performance of the cab to be tested is verified to obtain the heat preservation test result, improving the accuracy of the heat preservation performance test of the commercial vehicle cab.

[0110] Optionally, the heat preservation test result determination module 440 includes:

[0111] A position temperature difference determination unit, configured to determine the position temperature difference at the corresponding candidate test position according to the reference position temperature and the target position temperature at each candidate test position;

[0112] A temperature change rate determination unit, configured to determine the temperature change rate at the corresponding candidate test position according to the position temperature difference at each candidate test position and the preset test duration;

[0113] A heat preservation test result determination unit, configured to determine whether there is a target test position according to the temperature change rate at each candidate test position. If so, determine the heat preservation test result of the cab to be tested according to the target test position.

[0114] Optionally, the heat preservation test result determination unit is specifically configured to:

[0115] For any candidate test position, if the temperature change rate at the candidate test position is greater than the corresponding preset change rate threshold, then use the candidate test position as the target test position;

[0116] If the temperature change rate at the candidate test position is less than the corresponding preset change rate threshold, then prohibit using the candidate test position as the target test position.

[0117] Optionally, the target position temperature acquisition module 430 includes:

[0118] A verification result determination unit, configured to determine a reference test position from the candidate test positions, and when the reference position temperature at the reference test position reaches the indoor temperature peak, verify the reference position temperature at the reference test position according to a preset temperature duration to obtain a verification result;

[0119] A reference position temperature acquisition unit, configured to, if the verification result is passed, acquire the reference position temperatures at each candidate test position in the cab to be tested.

[0120] Optionally, the device further includes:

[0121] A basic performance detection result determination module, configured to acquire the basic performance data of the cab to be tested, and determine the basic performance detection result of the cab to be tested according to the basic performance data; wherein, the basic performance data includes the air-conditioning performance data, air duct performance data, switch performance data, and cab airtightness data of the cab to be tested.

[0122] Optionally, the candidate test positions include the indoor driver's head position, the indoor ceiling position, the indoor side wall position, the indoor floor position, and the interior surface position.

[0123] The heat preservation performance test device provided by the embodiments of the present invention can execute the heat preservation performance test method provided by any embodiment of the present invention, and has the corresponding functional modules and beneficial effects for executing each heat preservation performance test method.

[0124] In the technical solution of the present invention, the collection, storage, use, processing, transmission, provision, and disclosure of the current environmental chamber temperature, indoor temperature peak, preset test duration, reference position temperature, target position temperature, etc. comply with the provisions of relevant laws and regulations and do not violate public order and good customs.

[0125] Embodiment Five

[0126] Figure 5It is a schematic structural diagram of an electronic device for implementing a heat preservation performance test method provided in the fifth embodiment of the present invention. The electronic device 510 is intended to represent various forms of digital computers, such as laptop computers, desktop computers, workstations, personal digital assistants, servers, blade servers, mainframe computers, and other suitable computers. The electronic device can also represent various forms of mobile devices, such as personal digital processors, cellular phones, smart phones, wearable devices (such as helmets, glasses, watches, etc.) and other similar computing devices. The components shown herein, their connections and relationships, and their functions are merely examples and are not intended to limit the implementation of the present invention described and / or claimed herein.

[0127] As Figure 5 shown, the electronic device 510 includes at least one processor 511 and a memory communicatively connected to the at least one processor 511, such as a read-only memory (ROM) 512, a random access memory (RAM) 513, etc. The memory stores a computer program executable by the at least one processor. The processor 511 can perform various appropriate actions and processes according to the computer program stored in the read-only memory (ROM) 512 or the computer program loaded from the storage unit 518 into the random access memory (RAM) 513. In the RAM 513, various programs and data required for the operation of the electronic device 510 can also be stored. The processor 511, the ROM 512, and the RAM 513 are connected to each other through a bus 514. The input / output (I / O) interface 515 is also connected to the bus 514.

[0128] Multiple components in the electronic device 510 are connected to the I / O interface 515, including: an input unit 516, such as a keyboard, a mouse, etc.; an output unit 517, such as various types of displays, speakers, etc.; a storage unit 518, such as a disk, an optical disc, etc.; and a communication unit 519, such as a network card, a modem, a wireless communication transceiver, etc. The communication unit 519 allows the electronic device 510 to exchange information / data with other devices through a computer network such as the Internet and / or various telecommunication networks.

[0129] The processor 511 can be various general-purpose and / or special-purpose processing components with processing and computing capabilities. Some examples of the processor 511 include, but are not limited to, a central processing unit (CPU), a graphics processing unit (GPU), various dedicated artificial intelligence (AI) computing chips, various processors running machine learning model algorithms, a digital signal processor (DSP), and any appropriate processor, controller, microcontroller, etc. The processor 511 executes the various methods and processes described above, such as the heat preservation performance test method.

[0130] In some embodiments, the thermal insulation performance testing method can be implemented as a computer program tangibly embodied in a computer-readable storage medium, such as storage unit 518. In some embodiments, part or all of the computer program can be loaded and / or installed onto the electronic device 510 via ROM 512 and / or communication unit 519. When the computer program is loaded into RAM 513 and executed by the processor 511, one or more steps of the thermal insulation performance testing method described above can be performed. Alternatively, in other embodiments, the processor 511 can be configured to perform the thermal insulation performance testing method by any other suitable means (e.g., by means of firmware).

[0131] The various embodiments of the systems and techniques described above in this document can be implemented in digital electronic circuitry, integrated circuit systems, field programmable gate arrays (FPGA), application specific integrated circuits (ASIC), application specific standard products (ASSP), systems on a chip (SOC), complex programmable logic devices (CPLD), computer hardware, firmware, software, and / or combinations thereof. These various embodiments can include: implemented in one or more computer programs that can be executed and / or interpreted on a programmable system including at least one programmable processor, which can be a special-purpose or general-purpose programmable processor that can receive data and instructions from a storage system, at least one input device, and at least one output device, and transmit the data and instructions to the storage system, the at least one input device, and the at least one output device.

[0132] The computer programs for implementing the methods of the present invention can be written in any combination of one or more programming languages. These computer programs can be provided to a processor of a general-purpose computer, a special-purpose computer, or other programmable data processing device, such that when the computer programs are executed by the processor, the functions / operations specified in the flowchart and / or block diagram are implemented. The computer programs can be executed entirely on the machine, partially on the machine, as a stand-alone software package partially on the machine and partially on a remote machine, or entirely on a remote machine or server.

[0133] In the context of the present invention, a computer-readable storage medium can be a tangible medium that can contain or store a computer program for use by or in connection with an instruction execution system, apparatus, or device. The computer-readable storage medium can include, but is not limited to, electronic, magnetic, optical, electromagnetic, infrared, or semiconductor systems, apparatus, or devices, or any suitable combination of the foregoing. Alternatively, the computer-readable storage medium can be a machine-readable signal medium. More specific examples of the machine-readable storage medium would include an electrical connection based on one or more wires, a portable computer diskette, a hard disk, a random access memory (RAM), a read-only memory (ROM), an erasable programmable read-only memory (EPROM or Flash memory), an optical fiber, a portable compact disc read-only memory (CD-ROM), an optical storage device, a magnetic storage device, or any suitable combination of the foregoing.

[0134] To provide for interaction with a user, the systems and techniques described herein can be implemented on an electronic device having: a display device (e.g., a CRT (cathode ray tube) or LCD (liquid crystal display) monitor) for displaying information to the user; and a keyboard and a pointing device (e.g., a mouse or a trackball) by which the user can provide input to the electronic device. Other kinds of devices can also be used to provide for interaction with the user; for example, feedback provided to the user can be any form of sensory feedback (e.g., visual feedback, auditory feedback, or tactile feedback); and input received from the user can be in any form (including acoustic input, voice input, or tactile input).

[0135] The systems and techniques described herein can be implemented in a computing system that includes backend components (e.g., as a data server), or a computing system that includes middleware components (e.g., an application server), or a computing system that includes frontend components (e.g., a user computer having a graphical user interface or a web browser through which the user can interact with an implementation of the systems and techniques described herein), or a computing system that includes any combination of such backend components, middleware components, or frontend components. The components of the system can be interconnected by any form or medium of digital data communication (e.g., a communication network). Examples of communication networks include: a local area network (LAN), a wide area network (WAN), a blockchain network, and the Internet.

[0136] A computing system may include a client and a server. The client and the server are generally far from each other and usually interact via a communication network. The client-server relationship is created by computer programs running on respective computers and having a client-server relationship with each other. The server may be a cloud server, also known as a cloud computing server or a cloud host, which is a host product in the cloud computing service system, solving the defects of difficult management and weak business scalability existing in traditional physical hosts and VPS services.

[0137] It should be understood that various forms of processes shown above can be used, steps can be reordered, added or deleted. For example, the steps recited in the present invention can be executed in parallel, sequentially or in a different order, as long as the desired results of the technical solution of the present invention can be achieved, and no limitation is made herein.

[0138] The above specific embodiments do not constitute a limitation to the protection scope of the present invention. Those skilled in the art should understand that various modifications, combinations, sub-combinations and substitutions can be made according to design requirements and other factors. Any modifications, equivalent substitutions and improvements made within the spirit and principle of the present invention shall be included within the protection scope of the present invention.

Claims

1. A heat preservation performance testing method, characterized in that, Including: Obtain the current environmental chamber temperature of the environmental chamber where the cab to be tested is located, and adjust the initial position temperature at each candidate test position in the cab to be tested according to the current environmental chamber temperature to obtain the candidate position temperature; When the candidate position temperatures are respectively the same as the current environmental chamber temperature, adjust the vehicle air-conditioning state in the cab to be tested to the air-conditioning operation state, and update the candidate position temperature based on the indoor heat supply amount in the air-conditioning operation state to obtain the reference position temperature; When the reference position temperature at the reference test position is the indoor temperature peak, obtain the reference position temperature at each candidate test position in the cab to be tested, adjust the vehicle air-conditioning state in the cab to be tested to the air-conditioning off state, and obtain the target position temperature at each candidate test position after a preset test duration; Determine the heat preservation test result of the cab to be tested according to the reference position temperature, the target position temperature and the preset test duration.

2. The method according to claim 1, characterized in that The determining the heat preservation test result of the cab to be tested according to the reference position temperature, the target position temperature and the preset test duration includes: Determine the position temperature difference at the corresponding candidate test position according to the reference position temperature and the target position temperature at each candidate test position; Determine the temperature change rate at the corresponding candidate test position according to the position temperature difference at each candidate test position and the preset test duration; Determine whether there is a target test position according to the temperature change rate at each candidate test position. If there is, determine the heat preservation test result of the cab to be tested according to the target test position.

3. The method according to claim 2, characterized in that Determining the target test position according to the temperature change rate at each candidate test position includes: For any candidate test position, if the temperature change rate at the candidate test position is greater than the corresponding preset change rate threshold, use the candidate test position as the target test position; If the temperature change rate at the candidate test position is less than the corresponding preset change rate threshold, prohibit using the candidate test position as the target test position.

4. The method according to claim 1, wherein The obtaining the reference position temperature at each candidate test position in the cab to be tested when the reference position temperature at the reference test position is the indoor temperature peak includes: Determine the reference test position from the candidate test positions, and when the reference position temperature at the reference test position reaches the indoor temperature peak, verify the reference position temperature at the reference test position according to the preset temperature duration to obtain the verification result; If the verification result is verification passed, obtain the reference position temperature at each candidate test position in the cab to be tested.

5. The method according to claim 1, wherein The method further includes: Obtain the basic performance data of the cab to be tested, and determine the basic performance detection result of the cab to be tested according to the basic performance data; wherein, the basic performance data includes the air-conditioning performance data, the air duct performance data, the switch performance data and the cab airtightness data of the cab to be tested.

6. The method according to any one of claims 1-5, characterized in that, The candidate test positions include the indoor driver's head position, the indoor ceiling position, the indoor sidewall position, the indoor floor position, and the interior surface position.

7. A thermal insulation performance testing device, characterized in that, Comprising: An initial position temperature adjustment module, configured to obtain the current environmental chamber temperature of the environmental chamber where the cab to be tested is located, and adjust the initial position temperature at each candidate test position in the cab to be tested according to the current environmental chamber temperature, to obtain candidate position temperatures; A candidate position temperature update module, configured to, when each of the candidate position temperatures is the same as the current environmental chamber temperature, adjust the vehicle air-conditioning state in the cab to be tested to the air-conditioning operation state, and update the candidate position temperatures based on the indoor heat supply amount in the air-conditioning operation state, to obtain reference position temperatures; A target position temperature acquisition module, configured to, when the reference position temperature at the benchmark test position is the indoor temperature peak value, acquire the reference position temperatures at each candidate test position in the cab to be tested, adjust the vehicle air-conditioning state in the cab to be tested to the air-conditioning off state, and acquire the target position temperatures at each candidate test position after a preset test duration; A heat preservation test result determination module, configured to determine the heat preservation test result of the cab to be tested according to the reference position temperatures, the target position temperatures, and the preset test duration.

8. The device according to claim 7, characterized in that, The heat preservation test result determination module includes: A position temperature difference determination unit, configured to determine the position temperature difference at the corresponding candidate test position according to the reference position temperature and the target position temperature at each candidate test position; A temperature change rate determination unit, configured to determine the temperature change rate at the corresponding candidate test position according to the position temperature difference and the preset test duration at each candidate test position; A heat preservation test result determination unit, configured to determine whether there is a target test position according to the temperature change rates at each candidate test position, and if so, determine the heat preservation test result of the cab to be tested according to the target test position.

9. An electronic device, characterized in that, Comprising: One or more processors; A memory, configured to store one or more programs; When the one or more programs are executed by the one or more processors, the one or more processors implement a heat preservation performance test method according to any one of claims 1-6.

10. A computer-readable storage medium having a computer program stored thereon, characterized in that, When the program is executed by the processor, it implements a heat preservation performance test method according to any one of claims 1-6.

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