Control method for vehicle air conditioner

Abstract

The present application relates to the technical field of air conditioning, in particular to a control method of vehicle-mounted air conditioner. The present application aims to solve the problem of how to reasonably control the original vehicle air conditioner and the parking air conditioner to provide a good driving environment for users. To this end, the control method of vehicle-mounted air conditioner comprises the following steps: obtaining the temperature of the cab when the vehicle-mounted air conditioner is turned on and the original vehicle air conditioner communicates with the parking air conditioner; comparing the temperature of the cab with the preset temperature; and selectively controlling the original vehicle air conditioner and the parking air conditioner to operate in the normal mode according to the comparison result. By obtaining the temperature of the cab when the vehicle-mounted air conditioner is turned on and the original vehicle air conditioner communicates with the parking air conditioner, comparing the temperature of the cab with the preset temperature, and selectively controlling the original vehicle air conditioner and the parking air conditioner to operate according to the comparison result, the original vehicle air conditioner and the parking air conditioner can be reasonably controlled to provide a good driving environment for users, thereby improving the user experience.

Description

TECHNICAL FIELD

[0001] The present application relates to the technical field of vehicle air conditioner, in particular to a control method of vehicle air conditioner. BACKGROUND

[0002] With the development of science and technology, the existing vehicles are usually equipped with air conditioners to provide better driving environment for users. However, for large vehicles, such as large trucks or trucks, the original air conditioner has large heat exchange capacity and rapid heat exchange, but it will significantly increase the fuel consumption of the vehicle, which means that the truck driver will increase the frequency of refueling the vehicle, which not only delays the normal transportation of the truck, but also increases the cost.

[0003] To solve the above problems, an additional parking air conditioner is usually installed in large vehicles. The parking air conditioner is an air conditioner in the vehicle, which uses the vehicle battery direct current power (such as 36V) to continuously run the air conditioner to adjust and control the temperature, humidity, flow rate and other parameters of the air in the vehicle environment, fully meeting the driver's comfortable cooling demand. However, the driving environment of the vehicle is usually changeable, which leads the user to select to run the original vehicle air conditioner or the parking air conditioner according to the driving environment, which cannot effectively ensure that the best driving environment is provided for the user at all times, and also reduces the user's use experience.

[0004] Correspondingly, there is a need in the art for a new technical solution to solve the above problems. SUMMARY

[0005] In order to solve at least one of the above problems in the prior art, that is, to solve the problem of how to reasonably control the parking air conditioner and the original vehicle air conditioner to provide a good driving environment for the user, the present application provides a control method of vehicle air conditioner, the vehicle air conditioner comprising an original vehicle air conditioner and a parking air conditioner, characterized in that the vehicle air conditioner control method comprises:

[0006] When the vehicle air conditioner is turned on and the original vehicle air conditioner and the parking air conditioner are in communication, the temperature T of the cab is obtained;

[0007] The size of the cab temperature T and the preset temperature TR is compared;

[0008] According to the comparison result, the original vehicle air conditioner and the parking air conditioner are selectively controlled to run in normal mode.

[0009] In the preferred technical solution of the above air conditioner control method, the step of "selectively controlling the original vehicle air conditioner and the parking air conditioner to run in normal mode according to the comparison result" further comprises:

[0010] When T>TR, the original vehicle air conditioner and the parking air conditioner are controlled to run in normal mode;

[0011] When T≤TR, the original vehicle air conditioner is controlled to start in a speed-down mode, and the parking air conditioner is controlled to operate in a normal mode.

[0012] In the preferred technical solution of the air conditioner control method, after the step of "selectively controlling the original vehicle air conditioner and the parking air conditioner to operate in a normal mode according to the comparison result", the method further comprises:

[0013] Continuously obtaining the cab temperature T;

[0014] Judging the magnitude of the cab temperature T and a preset threshold value;

[0015] According to the comparison result, selectively adjusting the operation mode of the original vehicle air conditioner and the parking air conditioner.

[0016] In the preferred technical solution of the air conditioner control method, when the preset threshold value comprises a first preset threshold value TRA1 and T>TR, the step of "selectively adjusting the operation mode of the original vehicle air conditioner and the parking air conditioner according to the comparison result" further comprises:

[0017] When T≤TRA1, obtaining a set temperature TS of the air conditioner;

[0018] Comparing the magnitude of the cab temperature T and the set temperature TS;

[0019] When T>TS, calculating a difference value ΔT of the cab temperature T and the set temperature TS;

[0020] Comparing the difference value ΔT and a first difference threshold value B1;

[0021] When ΔT>B1, obtaining a first duration tc1 of the cab temperature T in the range of TS<T≤TRA1;

[0022] Comparing the first duration tc1 and a first preset time tr1;

[0023] When tc1≥tr1, the original vehicle air conditioner is controlled to stop operating, and the parking air conditioner is controlled to keep the original operation state.

[0024] In the preferred technical solution of the air conditioner control method, when the preset threshold value comprises a second preset threshold value TRA2 and T≤TR, the step of "selectively adjusting the operation mode of the original vehicle air conditioner and the parking air conditioner according to the comparison result" further comprises:

[0025] When T≤TRA2, obtaining a set temperature TS of the air conditioner;

[0026] Comparing the magnitude of the cab temperature T and the set temperature TS;

[0027] calculating a difference ΔT between the cab temperature T and the set temperature TS when T>TS;

[0028] comparing the difference ΔT with a second difference threshold B2;

[0029] obtaining a second duration tc2 when ΔT>B2, that the cab temperature T is in the range of TS<T≤TRA2;

[0030] comparing the second duration tc2 with a second preset time tr2;

[0031] controlling the original vehicle air conditioner to stop running and controlling the parking air conditioner to keep the original running state when tc2≥tr2.

[0032] In the preferred technical solutions of the air conditioner control method, after the step of "controlling the original vehicle air conditioner to stop running and controlling the parking air conditioner to keep the original running state", the method further comprises:

[0033] continuing to obtain the cab temperature T and a first temperature parameter TC1 of the air conditioner;

[0034] comparing the first temperature parameter TC1 with the set temperature TS;

[0035] calculating a difference ΔT between the cab temperature T and the set temperature TS when TS≥TC1;

[0036] comparing the difference ΔT with a third difference threshold B3;

[0037] controlling the original vehicle air conditioner to not run and controlling the parking air conditioner to run at a reduced frequency when ΔT≤B3.

[0038] In the preferred technical solutions of the air conditioner control method, the method further comprises:

[0039] obtaining a second temperature parameter TC2 of the air conditioner when TS<TC1;

[0040] calculating a size of the set temperature TS and the second temperature parameter TC2;

[0041] calculating a difference ΔT between the cab temperature T and the set temperature TS when TS>TC2;

[0042] comparing the difference ΔT with a fourth difference threshold B4;

[0043] controlling the original vehicle air conditioner to not run and controlling the parking air conditioner to run at a reduced frequency when ΔT≤B4.

[0044] In the preferred technical solution of the above air conditioner control method, after the step of "when ΔT≤B4, control the original vehicle air conditioner not to operate and at the same time control the parking air conditioner to operate at a reduced frequency", the following steps are further included:

[0045] When TS≤TC2, obtain the actual wind speed VC and the set wind speed VS of the air conditioner;

[0046] Compare the magnitudes of the actual wind speed VC and the set wind speed VS;

[0047] When VC≥VS, control the air conditioner to operate according to the second temperature parameter TC2;

[0048] When VC<VS, control the air conditioner to operate according to the set temperature TS;

[0049] In the preferred technical solution of the above air conditioner control method, the control method further includes:

[0050] When the vehicle-mounted air conditioner is turned on and the original vehicle air conditioner and the parking air conditioner do not communicate, obtain the change speed of the cab temperature and the refrigeration speed of the original vehicle air conditioner;

[0051] Compare the magnitudes of the change speed of the cab temperature and the refrigeration speed of the original vehicle air conditioner;

[0052] When the change speed is greater than the refrigeration speed, obtain the cab temperature T;

[0053] Compare the cab temperature T with the third preset threshold TR3;

[0054] When T≤TR3, control the output power of the original vehicle air conditioner to decrease and at the same time control the parking air conditioner to operate in the normal mode.

[0055] In the preferred technical solution of the above air conditioner control method, the control method further includes:

[0056] Continue to obtain the cab temperature T;

[0057] Compare the cab temperature T with the fourth preset threshold TR4;

[0058] When T≤TR4, control the original vehicle air conditioner to stop operating and at the same time control the parking air conditioner to operate in the normal mode.

[0059] Those skilled in the art will understand that by obtaining the cab temperature T when the vehicle air conditioner is turned on and the original vehicle air conditioner communicates with the parking air conditioner, comparing the cab temperature T with a preset temperature, and selectively controlling the original vehicle air conditioner and the parking air conditioner to start in normal mode based on the comparison result, the parking air conditioner and the original vehicle air conditioner can be reasonably controlled to provide a good driving environment for the user and improve the user experience.

[0060] Furthermore, by comparing the temperature inside the driver's cab with the preset temperature, when the temperature inside the driver's cab is higher than the preset temperature, the original vehicle air conditioner and the parking air conditioner are controlled to operate in normal mode, thereby increasing the rate at which the temperature inside the driver's cab decreases and improving the user experience; when the temperature inside the driver's cab is lower than or equal to the preset temperature, the original vehicle air conditioner is controlled to start in a reduced speed mode and the parking air conditioner is controlled to operate normally, thereby reducing the rate at which the temperature inside the driver's cab decreases and improving the user experience.

[0061] Furthermore, while selectively controlling the operation of the original vehicle air conditioner and the parking air conditioner, the system continues to acquire the cabin temperature and compare it with a preset threshold. This allows for timely adjustment of the operating status of the original vehicle air conditioner and the parking air conditioner based on changes in the cabin temperature, thereby improving the user experience.

[0062] Furthermore, when the cab temperature is less than or equal to a first preset threshold, the cab temperature is compared with the air conditioner's set temperature. When the cab temperature is greater than or equal to the set temperature, the difference between the cab temperature and the set temperature is calculated. The difference is compared with a first difference threshold. When the difference is greater than the first difference threshold, a first duration when the cab temperature is greater than the set temperature but less than or equal to the first preset threshold is obtained. When the first duration is greater than or equal to the first preset time, the original vehicle air conditioner is stopped and the parking air conditioner remains in its original operating state. This allows for timely adjustment of the original vehicle air conditioner and the parking air conditioner based on changes in the cab temperature, improving the user experience.

[0063] Furthermore, when the cab temperature is less than or equal to a second preset threshold, the cab temperature is compared with a set temperature. When the cab temperature is greater than the set temperature, the difference between the cab temperature and the set temperature is calculated and compared with a second difference threshold. When the difference is greater than the second difference threshold, a second duration when the cab temperature is greater than the set temperature but less than or equal to the second preset threshold is obtained. When the second duration is greater than or equal to the second preset time, the original vehicle air conditioner is stopped and the parking air conditioner remains in its original operating state. This allows for timely adjustment of the operating state of the original vehicle air conditioner and the parking air conditioner based on changes in the cab temperature, thereby improving the user experience.

[0064] Furthermore, while controlling the original vehicle air conditioner to stop operating and the parking air conditioner to maintain its original operating state, the system continues to acquire the cab temperature and the first temperature parameter set by the air conditioner. By comparing the first temperature parameter with the set temperature, if the set temperature is greater than or equal to the first temperature parameter, the system calculates the difference between the cab temperature and the set temperature and compares the difference with a third difference threshold. If the difference is less than or equal to the third difference threshold, the system controls the original vehicle air conditioner to stop operating and controls the parking air conditioner to operate at a reduced frequency. This allows the system to adjust the operating status of the original vehicle air conditioner and the parking air conditioner in a timely manner according to changes in the cab temperature, thereby improving the user experience.

[0065] Furthermore, when the set temperature is lower than the first temperature parameter, a second temperature parameter is obtained and compared with the set temperature. When the set temperature is greater than the second temperature parameter but less than the first temperature parameter, the difference between the cab temperature and the set temperature is calculated and compared with a second difference threshold. When the difference is less than or equal to a fourth difference threshold, the original vehicle control is deactivated and the parking air conditioner is reduced in frequency. This allows for timely adjustment of the operating status of the original vehicle air conditioner and the parking air conditioner based on changes in the cab temperature, thereby improving the user experience.

[0066] Furthermore, when the original vehicle air conditioner is not running and the parking air conditioner is operating at a reduced frequency, the actual fan speed and the set fan speed of the air conditioner are obtained when the set temperature is less than or equal to the second temperature parameter. The actual fan speed is compared with the set fan speed. When the actual fan speed is greater than or equal to the set fan speed, the air conditioner is controlled to operate according to the second temperature parameter. When the actual fan speed is less than the set fan speed, the air conditioner operates according to the set temperature. This allows for timely adjustment of the operating status of the original vehicle air conditioner and the parking air conditioner based on changes in the cabin temperature, thereby improving the user experience. Attached Figure Description

[0067] The control method for an in-vehicle air conditioner according to this application will now be described with reference to the accompanying drawings. In the drawings:

[0068] Figure 1 This is a flowchart of the vehicle air conditioning control method of this application;

[0069] Figure 2 This is a logic diagram of one possible implementation of the vehicle air conditioning control method of this application. Detailed Implementation

[0070] Preferred embodiments of this application are described below with reference to the accompanying drawings. Those skilled in the art should understand that these embodiments are merely illustrative of the technical principles of this application and are not intended to limit the scope of protection of this application. For example, although this embodiment is described in conjunction with a motorhome, this is not intended to limit the scope of protection of this application. Without departing from the principles of this application, those skilled in the art can apply this application to other application scenarios, as long as the vehicle has air conditioning. For example, transport trucks or buses, etc.

[0071] First refer to Figure 1 and Figure 2 The control method for the vehicle air conditioner of this application is described below. Figure 1 This is a flowchart of the vehicle air conditioning control method of this application; Figure 2 This is a logic diagram of one possible implementation of the vehicle air conditioning control method of this application.

[0072] To address the issue of high air conditioning maintenance costs due to the need for manual refrigerant replenishment in the event of refrigerant shortage, this application provides a method for controlling a vehicle-mounted air conditioner. The vehicle-mounted air conditioner in the RV includes both the original vehicle air conditioner and a parking air conditioner. The method for controlling the vehicle-mounted air conditioner includes:

[0073] S101. When the vehicle air conditioner is turned on and the original vehicle air conditioner communicates with the parking air conditioner, the driver's cabin temperature T is obtained. For example, a temperature sensor can be installed in the driver's cabin to detect the driver's cabin temperature.

[0074] S102. Compare the cab temperature T with the preset temperature TR. For example, after detecting the cab temperature, the difference between the cab temperature and the preset temperature is compared to determine whether the difference is greater than 0 or whether the ratio between the two is greater than 1.

[0075] S103. Based on the comparison results, selectively control the original vehicle air conditioner and the parking air conditioner to operate in normal mode. For example, after determining the difference between the driver's cabin temperature and the preset temperature, selectively control the original vehicle air conditioner and the parking air conditioner to start in the preset normal mode.

[0076] By acquiring the driver's cabin temperature when the vehicle's air conditioning is on and the original vehicle air conditioning and parking air conditioning are communicating, and by comparing the driver's cabin temperature with a preset temperature, the original vehicle air conditioning and parking air conditioning are selectively controlled to start in normal mode based on the comparison result. This allows for reasonable control of the parking air conditioning and the original vehicle air conditioning to provide users with a good driving environment and improve user experience.

[0077] The preferred embodiment of the vehicle air conditioning control method of this application is described below. Wherein, the driver's cab temperature is T, the preset temperature is TR, the first temperature threshold is TRA1, the second temperature threshold is TRA2, the third temperature threshold is TRA3, the fourth temperature threshold is TRA4, the first temperature parameter is TC1, the second temperature parameter is TC2, the first duration is tc1, the second duration is tc2, the first preset time is tr1, the second preset time is tr2, the set temperature is TS, the actual wind speed is VC, the set wind speed is VS, the first difference threshold is B1, the second difference threshold is B2, the third difference threshold is B3, and the fourth difference threshold is B4.

[0078] In one implementation, the step of "selectively controlling the original vehicle air conditioner and the parking air conditioner to operate in normal mode according to the comparison results" further includes:

[0079] When T>TR, the original vehicle air conditioner and the parking air conditioner will start in normal mode.

[0080] When T≤TR, the original vehicle air conditioner is controlled to start in reduced speed mode, while the parking air conditioner is controlled to operate in normal mode.

[0081] It should be noted that starting the original car air conditioner in reduced speed mode means that the original car air conditioner operates at a reduced airflow speed, and the power corresponding to this operating mode is less than the power corresponding to the original car air conditioner in normal operating mode. This makes the rate of temperature drop in the cab greater than the rate of temperature drop in the cab when T>TR.

[0082] For example, let's take the cab temperature as T and the preset temperature TR as 30℃ as an example. When T > 30℃, the cab temperature is relatively high. In this case, controlling the original vehicle air conditioner and the parking air conditioner to start in normal mode can quickly lower the cab temperature and improve the user experience. When T ≤ 30℃, the cab temperature is relatively low. In this case, controlling the original vehicle air conditioner to start in reduced speed mode and the parking air conditioner to start in normal operation mode will result in a slower decrease in cab temperature compared to when T ≥ 30℃, because the power required for the original vehicle air conditioner to start in reduced speed mode is less than the power required for the original vehicle to operate in normal mode.

[0083] In one implementation, after the step of "selectively controlling the original vehicle air conditioner and the parking air conditioner to operate in normal mode based on the comparison results," the method further includes:

[0084] Continue to obtain the cab temperature T;

[0085] Determine the difference between the cab temperature T and a preset threshold.

[0086] Based on the comparison results, the operating modes of the original vehicle air conditioner and the parking air conditioner are selectively adjusted.

[0087] It should be noted that after the original vehicle air conditioner and the parking air conditioner are in operation, the temperature in the cab is gradually decreasing. At this time, the cab temperature is continuously obtained, and the operating modes of the original vehicle air conditioner and the parking air conditioner are adjusted according to the comparison result between the cab temperature and the preset threshold, so that the vehicle-mounted air conditioner adaptively adjusts the operating mode according to the cab temperature, making the operation mode of the vehicle-mounted air conditioner more reasonable and improving the user experience.

[0088] Specifically, when the preset threshold includes the first preset threshold TRA1 and T>TR, the step of "selectively adjusting the operating modes of the original vehicle air conditioner and the parking air conditioner according to the comparison result" further includes:

[0089] When T≤TRA1, obtain the set temperature TS of the air conditioner;

[0090] Compare the cab temperature T with the set temperature TS;

[0091] When T≥TS, calculate the difference ΔT between the cab temperature T and the set temperature TS;

[0092] Compare the difference ΔT with the first difference threshold B1;

[0093] When ΔT>B1, obtain the first duration tc1 when the cab temperature T is in the range of TS<T≤TRA1;

[0094] Compare the first duration tc1 with the first preset time tr1;

[0095] When tc1≥tr1, control the original vehicle air conditioner to stop running, and at the same time control the parking air conditioner to maintain the original running state.

[0096] For example, taking the cab temperature as T, the preset temperature TR as 30°C, the first preset threshold TRA1 as 28°C, the set temperature TS as 24°C, the first difference threshold B1 as 3°C, the first duration as tc1, and the first preset time tr1 as 30 min as an example. After the original vehicle air conditioner and the parking air conditioner are started in the normal mode, the cab temperature gradually decreases under the action of the original vehicle air conditioner and the parking air conditioner. At this time, continue to obtain the cab temperature T and compare the cab temperature T with the first preset threshold TRA1. When T > 28°C, the parking air conditioner and the original vehicle air conditioner operate according to the original operation mode. When T ≤ 28°C, obtain the user's set temperature TS as 24°C and compare the size of the set temperature TS and the cab temperature T. When T > 24°C, calculate the difference ΔT between the cab temperature T and the set temperature TS, and compare the size of the difference ΔT and the first difference threshold B1. When ΔT > 3°C, obtain the first duration tc1 when the cab temperature T is in the range of TS < T ≤ TRA1. When tc1 ≥ 30 min, it means that the cab temperature T is in the range of TS < T ≤ TRA1 for a long time, and the cab temperature T continues to be in a relatively low state. At this time, the original vehicle air conditioner can be controlled to stop running, and at the same time, the parking air conditioner is controlled to maintain the original operation state, and the vehicle is cooled by the parking air conditioner. When tc1 < 30 min, it means that the cab temperature T is in the range of TS < T ≤ TRA1 for a short time. At this time, the parking air conditioner and the original vehicle air conditioner are controlled to operate according to the original operation mode.

[0097] Further, when the preset threshold includes a second preset threshold TRA2 and T ≤ TR, the step of "selectively adjusting the operation modes of the original vehicle air conditioner and the parking air conditioner according to the comparison result" further includes: when T ≤ TRA2, obtain the set temperature TS of the air conditioner;

[0098] Compare the size of the cab temperature T and the set temperature TS;

[0099] When T > TS, calculate the difference ΔT between the cab temperature T and the set temperature TS;

[0100] Compare the size of the difference ΔT and the second difference threshold B2;

[0101] When ΔT > B2, obtain the second duration tc2 when the cab temperature T is in the range of TS < T ≤ TRA2;

[0102] Compare the size of the second duration tc2 and the second preset time tr2;

[0103] When tc2 ≥ tr2, control the original vehicle air conditioner to stop running, and at the same time, control the parking air conditioner to maintain the original operation state.

[0104] For example, taking the cab temperature as T, the second preset threshold TRA2 as 28°C, the set temperature TS as 24°C, the second duration as tc2, the second difference threshold B2 as 3°C, and the second preset time tr2 as 20 min as an example. After the original vehicle air conditioner starts in the deceleration mode and the parked vehicle air conditioner starts in the normal mode, the cab temperature gradually decreases. At this time, continue to obtain the cab temperature T and compare the cab temperature T with the first preset threshold TRA2. When T > 28°C, the parked vehicle air conditioner and the original vehicle air conditioner operate according to the original operation mode. When T ≤ 28°C, obtain the user's set temperature TS and compare the set temperature TS with the cab temperature T. When T > 24°C, calculate the difference ΔT between the cab temperature T and the set temperature TS, and compare the difference ΔT with the second difference threshold B2. When ΔT > 3°C, obtain the second duration tc2 when the cab temperature T is in the range of TS < T ≤ TRA2. When tc2 ≥ 20 min, it means that the cab temperature T is in the range of TS < T ≤ TRA2 for a relatively long time, and the cab temperature T remains in a relatively low state. At this time, the original vehicle air conditioner can be controlled to stop operating, and at the same time, the parked vehicle air conditioner is controlled to maintain the original operation state, and the parked vehicle air conditioner cools the vehicle. When tc2 < 20 min, it means that the cab temperature T is in the range of TS < T ≤ TRA2 for a short time, and at this time, the parked vehicle air conditioner and the original vehicle air conditioner are controlled to operate according to the original operation mode.

[0105] In one implementation, after the step of "controlling the original vehicle air conditioner to stop operating and at the same time controlling the parked vehicle air conditioner to maintain the operating state", it further includes:

[0106] Continue to obtain the cab temperature T and the first temperature parameter TC1 of the air conditioner;

[0107] Compare the first temperature parameter TC1 with the set temperature TS;

[0108] When TS ≥ TC1, calculate the difference ΔT between the cab temperature T and the set temperature TS;

[0109] Compare the difference ΔT with the third difference threshold B3;

[0110] When ΔT ≤ B3, control the original vehicle air conditioner not to operate, and at the same time control the parked vehicle air conditioner to operate at a reduced frequency.

[0111] It should be noted that the first temperature parameter TC1 is the temperature preset by the air conditioner.

[0112] For example, taking the cab temperature as T, the first temperature parameter TC1 as 24°C, the set temperature TS as 26°C, and the third difference threshold B3 as 3°C as an example for illustration. When T ≤ TS, obtain the first temperature parameter TC1 of the air conditioner, and compare the size of the first temperature parameter TC1 and the set temperature TS. When TS ≥ TC1, calculate the difference ΔT between the cab temperature T and the set temperature TS. The difference ΔT is 2°C, and ΔT < 3°C, indicating that the cab temperature is too low. At this time, control the original vehicle air conditioner not to operate, and at the same time control the parked vehicle air conditioner to operate at a reduced frequency.

[0113] In one implementation, the control method further includes:

[0114] When TS < TC1, obtain the second temperature parameter TC2 of the said air conditioner;

[0115] Calculate the size of the set temperature TS and the second temperature parameter TC2;

[0116] When TS > TC2, then calculate the difference ΔT between the cab temperature T and the set temperature TS;

[0117] Compare the size of the difference ΔT and the fourth difference threshold B4;

[0118] When ΔT ≤ B4, then control the original vehicle air conditioner not to operate, and at the same time control the parked vehicle air conditioner to operate at a reduced frequency.

[0119] It should be noted that the second temperature parameter TC2 is the preset temperature of the air conditioner.

[0120] For example, taking the cab temperature as T, the first temperature parameter TC1 as 24°C, the second temperature parameter TC2 as 18°C, the set temperature TS as 20°C, and the fourth difference threshold B4 as 2°C as an example for illustration. When TS < TC1, obtain the second temperature parameter TC2 of the air conditioner as 18°C, and compare the second temperature parameter TC1 and the set temperature TS. When TS > 18°C, calculate the difference ΔT between the cab temperature T and the set temperature TS. The difference ΔT is 1°C, and ΔT < 2°C, indicating that the cab temperature is too low. At this time, control the original vehicle air conditioner not to operate, and at the same time control the parked vehicle air conditioner to operate at a reduced frequency.

[0121] Furthermore, the control method further includes:

[0122] When TS ≤ TC2, then obtain the actual wind speed VC and the set wind speed VS of the air conditioner;

[0123] Compare the size of the actual wind speed VC and the set wind speed VS;

[0124] When VC ≥ VS, then control the air conditioner to operate according to the second temperature parameter TC2;

[0125] When VC < VS, control the air conditioner to operate according to the set temperature TS.

[0126] For example, taking the cab temperature as T, the second temperature parameter TC2 as 18 °C, and the set temperature TS as 16 °C for illustration. When TS ≤ TC2, obtain the actual wind speed VC and the set wind speed VS of the air conditioner, and compare their magnitudes. When VC ≥ VS, the user has reduced the set wind speed, indicating that the user believes this temperature is a comfortable temperature for experience. At this time, control the air conditioner to operate according to the second temperature parameter TC2. When VC < VS, the user has increased the set wind speed, and at this time, control the air conditioner to operate according to the set wind speed TS.

[0127] In one implementation, the control method further includes:

[0128] When the vehicle-mounted air conditioner is turned on and the original vehicle air conditioner and the parked vehicle air conditioner do not communicate, obtain the change speed of the cab temperature and the refrigeration speed of the original vehicle air conditioner;

[0129] Compare the change speed of the cab temperature with the refrigeration speed of the original vehicle air conditioner;

[0130] When the change speed is greater than the refrigeration speed, obtain the cab temperature T;

[0131] Compare the cab temperature T with the third preset threshold TR3;

[0132] When T ≤ TR3, control the output power of the original vehicle air conditioner to decrease, and at the same time control the parked vehicle air conditioner to operate in the normal mode.

[0133] It should be noted that when the change speed of the cab temperature is greater than the refrigeration speed of the original vehicle air conditioner, it indicates that the parked vehicle air conditioner is in the operating state; otherwise, only the original vehicle air conditioner is in the operating state.

[0134] For example, taking the cab temperature as T and the third preset threshold TR3 as 28 °C for illustration. When T ≤ TR3, it means the cab temperature is decreasing. At this time, the output power of the original vehicle air conditioner can be controlled to decrease, and at the same time the parked vehicle air conditioner can be controlled to operate in the normal mode.

[0135] Furthermore, the control method further includes:

[0136] Continue to obtain the cab temperature T;

[0137] Compare the cab temperature T with the fourth preset threshold TR4;

[0138] When T ≤ TR4, control the original vehicle air conditioner to stop operating, and at the same time control the parked vehicle air conditioner to operate in the normal mode.

[0139] For example, taking the cab temperature as T and the fourth preset threshold TR4 as 26°C for illustration. When T ≤ 26°C, it indicates that the cab temperature is relatively low. At this time, control the original vehicle air conditioner to stop running, and at the same time control the parking air conditioner to operate in the normal mode.

[0140] Obtain the actual wind speed VC and the set wind speed VS of the air conditioner, and compare their magnitudes. When VC ≥ VS, the user has reduced the set wind speed, indicating that the user believes this temperature is a comfortable temperature for experience. At this time, control the air conditioner to operate according to the second temperature parameter TC2. When VC < VS, the user has increased the set wind speed. At this time, control the air conditioner to operate according to the set wind speed TS.

[0141] Next, in combination with Figure 2 , a possible operating process of the air conditioner of the present application will be briefly described. Among them, Figure 2 is a logic diagram of a possible implementation manner of the control method of the air conditioner of the present application

[0142] As Figure 2 shown, in a possible operating process:

[0143] S201, when the vehicle-mounted air conditioner is turned on and the original vehicle air conditioner communicates with the parking air conditioner, obtain the cab temperature T, and then execute S202.

[0144] S202, determine whether T > TR holds. If it is, execute S203; if not, execute S204.

[0145] S203, control the original vehicle air conditioner and the parking air conditioner to start in the normal mode, and then return to execute S205.

[0146] S204, control the original vehicle air conditioner to start in the speed reduction mode, and at the same time control the parking air conditioner to operate in the normal mode, and then execute S214.

[0147] S205, continue to obtain the cab temperature T, and then execute S206.

[0148] S206, determine whether T ≤ TRA1 holds. If it holds, execute S207; otherwise execute S205.

[0149] S207, obtain the set temperature TS of the air conditioner, and then execute S208.

[0150] S208, determine whether TS < T holds. If it holds, execute S209; otherwise execute S208.

[0151] S209, calculate the difference ΔT between the cab temperature T and the set temperature TS, and then execute S210.

[0152] S210, determine whether ΔT > B1 holds. If it holds, execute S211; otherwise, execute S209.

[0153] S211, obtain the first duration tc1 when the cab temperature T is within TS < T ≤ TRA1, and then execute S212.

[0154] S212, determine whether tc1 ≥ tr1 holds. If it holds, execute S213; otherwise, execute S211.

[0155] S213, control the original vehicle air conditioner to stop running, and at the same time control the parking air conditioner to maintain its original operating state, and then execute S223.

[0156] S214, continue to obtain the cab temperature T, and then execute S215.

[0157] S215, determine whether T ≤ TRA2 holds. If it holds, execute S216; otherwise, execute S214.

[0158] S216, obtain the set temperature TS of the air conditioner, and then execute S217.

[0159] S217, determine whether TS < T holds. If it holds, execute S218; otherwise, execute S216.

[0160] S218, calculate the difference ΔT between the cab temperature T and the set temperature TS, and then execute S219.

[0161] S219, determine whether ΔT > B2 holds. If it holds, execute S220; otherwise, execute S218.

[0162] S220, obtain the second duration tc2 when the cab temperature T is within TS < T ≤ TRA2, and then execute S​​​​​​​​​​​​​​​

[0168] S226, determine whether ΔT≤B3 is true. If true, execute S227; otherwise, execute S225.

[0169] S227 controls the original vehicle air conditioner to not operate, and simultaneously controls the parking air conditioner to operate at a reduced frequency.

[0170] S228, obtain the second temperature parameter TC2, and then execute S229.

[0171] S229, calculate the values ​​of the set temperature TS and the second temperature parameter TC2, and then execute S230.

[0172] S230: Determine if TS > TC2. If true, execute S231; otherwise, execute S234.

[0173] S231, calculate the difference ΔT between the cab temperature T and the set temperature TS, and then execute S232.

[0174] S232, determine if ΔT≤B4. If true, execute S233; otherwise, execute S231.

[0175] S233 controls the original vehicle air conditioner to not operate, and simultaneously controls the parking air conditioner to operate at a reduced frequency.

[0176] S234, obtain the actual fan speed VC and the set fan speed VS of the air conditioner, and then execute S235.

[0177] S235, determine whether VC≥VS is true. If true, execute S236; otherwise, execute S237.

[0178] S236 controls the air conditioner to operate according to the second temperature parameter TC2.

[0179] S237 controls the air conditioner to operate at the set temperature TS.

[0180] Those skilled in the art will understand that although some embodiments described herein include certain features included in other embodiments but not others, combinations of features from different embodiments are intended to be within the scope of this application and form different embodiments. For example, any of the claimed embodiments in the claims of this application can be used in any combination.

[0181] It should be noted that although the detailed steps of the method of this application have been described in detail above, those skilled in the art can combine, split and rearrange the above steps without departing from the basic principles of this application. Such modified technical solutions do not change the basic concept of this application and therefore fall within the protection scope of this application.

[0182] The technical solutions of this application have been described above with reference to the preferred embodiments shown in the accompanying drawings. However, it will be readily understood by those skilled in the art that the scope of protection of this application is obviously not limited to these specific embodiments. Without departing from the principles of this application, those skilled in the art can make equivalent changes or substitutions to the relevant technical features, and the technical solutions after these changes or substitutions will all fall within the scope of protection of this application.

Claims

1. A method for controlling a vehicle air conditioner, wherein the vehicle air conditioner includes a standard vehicle air conditioner and a parking air conditioner, characterized in that, The vehicle-mounted air conditioner control method includes: When the vehicle-mounted air conditioner is turned on and the original vehicle air conditioner communicates with the parking air conditioner, obtain the cab temperature T; Compare the cab temperature T with the preset temperature TR; When T>TR, control the original vehicle air conditioner and the parking air conditioner to start in the normal mode; When T≤TR, control the original vehicle air conditioner to start in the speed reduction mode, and at the same time control the parking air conditioner to start in the normal mode; Continue to obtain the cab temperature T; Judge the size of the cab temperature T and the preset threshold; According to the comparison result, selectively adjust the operating modes of the original vehicle air conditioner and the parking air conditioner; When the preset threshold includes the first preset threshold TRA1 and T>TR, the step of "selectively adjusting the operating modes of the original vehicle air conditioner and the parking air conditioner according to the comparison result" further includes: When T≤TRA1, obtain the set temperature TS of the air conditioner; Compare the cab temperature T with the set temperature TS; When T>TS, calculate the difference ΔT between the cab temperature T and the set temperature TS; Compare the difference ΔT with the first difference threshold B1; When ΔT>B1, obtain the first duration tc1 when the cab temperature T is in TS<T≤TRA1; Compare the first duration tc1 with the first preset time tr1; When tc1≥tr1, control the original vehicle air conditioner to stop running, and at the same time control the parking air conditioner to maintain the original operating state; Among them, the speed reduction mode refers to the original vehicle air conditioner running at a reduced air outlet speed, and the power corresponding to this mode is less than the power corresponding to the normal mode.

2. The control method for vehicle air conditioning according to claim 1, characterized in that, When the preset threshold includes the second preset threshold TRA2 and T≤TR, the step of "selectively adjusting the operating modes of the original vehicle air conditioner and the parking air conditioner according to the comparison result" further includes: When T≤TRA2, obtain the set temperature TS of the air conditioner; Compare the cab temperature T with the set temperature TS; When T>TS, calculate the difference ΔT between the cab temperature T and the set temperature TS; Compare the difference ΔT with the second difference threshold B2; When ΔT>B2, obtain the second duration tc2 when the cab temperature T is in TS<T≤TRA2; Compare the second duration tc2 with the second preset time tr2; When tc2≥tr2, control the original vehicle air conditioner to stop running, and at the same time control the parking air conditioner to maintain the original operating state.

3. The control method for vehicle air conditioning according to claim 1 or 2, characterized in that, After the step of "controlling the original vehicle air conditioner to stop running and at the same time controlling the parking air conditioner to maintain the operating state", it further includes: Continue to obtain the cab temperature T and the first temperature parameter TC1 of the air conditioner; Compare the first temperature parameter TC1 with the set temperature TS; When TS≥TC1, calculate the difference ΔT between the cab temperature T and the set temperature TS; Compare the difference ΔT with the third difference threshold B3; When ΔT≤B3, control the original vehicle air conditioner not to run, and at the same time control the parking air conditioner to run at a reduced frequency.

4. The control method for vehicle air conditioning according to claim 3, characterized in that, The control method further includes: When TS < TC1, obtain the second temperature parameter TC2 of the air conditioner mentioned above; Calculate the magnitude relationship between the set temperature TS and the second temperature parameter TC2; When TS > TC2, calculate the difference ΔT between the cab temperature T and the set temperature TS; Compare the magnitude of the difference ΔT and the fourth difference threshold B4; When ΔT ≤ B4, control the original vehicle air conditioner not to operate, and at the same time control the parking air conditioner to operate at a reduced frequency.

5. The control method for vehicle air conditioning according to claim 4, characterized in that, After the step of "When ΔT ≤ B4, control the original vehicle air conditioner not to operate, and at the same time control the parking air conditioner to operate at a reduced frequency", it further includes: When TS ≤ TC2, obtain the actual wind speed VC and the set wind speed VS of the air conditioner; Compare the magnitude of the actual wind speed VC and the set wind speed VS; When VC ≥ VS, control the air conditioner to operate according to the second temperature parameter TC2; When VC < VS, control the air conditioner to operate according to the set temperature TS.

6. The control method for vehicle air conditioning according to claim 1, characterized in that, The control method further includes: When the vehicle-mounted air conditioner is turned on and the original vehicle air conditioner and the parking air conditioner do not communicate, obtain the change speed of the cab temperature and the refrigeration speed of the original vehicle air conditioner; Compare the change speed of the cab temperature and the refrigeration speed of the original vehicle air conditioner; When the change speed is greater than the refrigeration speed, obtain the cab temperature T; Compare the magnitude of the cab temperature T and the third preset threshold TR3; When T ≤ TR3, control the output power of the original vehicle air conditioner to decrease, and at the same time control the parking air conditioner to operate in the normal mode.

7. The control method for vehicle air conditioning according to claim 6, characterized in that, The control method further includes: Continue to obtain the cab temperature T; Compare the magnitude of the cab temperature T and the fourth preset threshold TR4; When T ≤ TR4, control the original vehicle air conditioner to stop operating, and at the same time control the parking air conditioner to operate in the normal mode.

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