CN115709629A

CN115709629A - Control method of air conditioning system for vehicle, vehicle and storage medium

Info

Publication number: CN115709629A
Application number: CN202211433956.1A
Authority: CN
Inventors: 刘志刚
Original assignee: Great Wall Motor Co Ltd
Current assignee: Great Wall Motor Co Ltd
Priority date: 2022-11-16
Filing date: 2022-11-16
Publication date: 2023-02-24

Abstract

The application provides a control method of an air conditioning system for a vehicle, a vehicle and a storage medium. The method comprises the following steps: receiving a power limiting instruction sent by a hybrid electric vehicle controller HCU; acquiring a corresponding power threshold according to the power limiting instruction, and acquiring vehicle environment data; adjusting the operating power of the air conditioning system according to the power threshold and the vehicle environment data so that the operating power of the air conditioning system is smaller than or equal to the power threshold; the power adjusting instruction is generated by the HCU when the vehicle operation parameters meet the set operation conditions; the vehicle environment data includes: interior temperature, exterior temperature, door state, window state, and occupant count. In the application, after the vehicle air conditioning system receives the power limiting instruction sent by the HCU, the operating power of the air conditioning system is adjusted by integrating various vehicle environmental parameters, the condition that the air conditioning system operates at higher power and the energy consumption of the system is increased can be avoided, and meanwhile, the accuracy of the air conditioning system for regulating the temperature in the vehicle and the energy utilization rate are improved.

Description

Control method of air conditioning system for vehicle, vehicle and storage medium

Technical Field

The present disclosure relates to the field of vehicle air conditioning system control technologies, and in particular, to a control method for a vehicle air conditioning system, a vehicle, and a storage medium.

Background

In recent years, pure electric vehicles and hybrid electric vehicles have been developed rapidly, and such automobile power batteries are used for providing power for vehicle engines and providing power for operation of vehicle air conditioning systems. Most of the conventional air conditioning systems for vehicles are controlled by manually operating an air conditioner controller to adjust parameters such as air outlet temperature, air outlet volume, air blowing mode and the like of an air conditioner so as to meet user requirements. In order to solve the problem that manual control cannot meet the requirement of user comfort, the prior art provides an intelligent control scheme for the vehicle air conditioning system, and the vehicle air conditioning system adjusts the running power according to the internal environment temperature of the vehicle and the external environment temperature.

In the process of implementing the embodiment of the present application, it is found that at least the following problems exist in the related art: the power control scheme of the existing vehicle air conditioning system has low efficiency and accuracy of controlling the energy consumption of the whole vehicle.

Disclosure of Invention

The embodiment of the application provides a control method of an air conditioning system for a vehicle, the vehicle and a storage medium, and aims to solve the problem that the power control scheme of the existing air conditioning system for the vehicle is low in efficiency and accuracy of energy consumption control of the whole vehicle.

In a first aspect, an embodiment of the present application provides a control method for a vehicle air conditioning system, including:

receiving a power limit instruction sent by a Hybrid Control Unit (HCU);

acquiring a corresponding power threshold according to the power limiting instruction, and acquiring vehicle environment data;

adjusting the operating power of an air conditioning system according to the power threshold and the vehicle environment data so that the operating power of the air conditioning system is smaller than or equal to the power threshold;

wherein the power adjustment command is generated by the HCU when a vehicle operating parameter meets a set operating condition; the vehicle environment data includes: interior temperature, exterior temperature, door state, window state, and occupant count.

In one possible implementation, the power limit command is an air conditioner power derating command; the air conditioner power degradation instruction comprises a comparison table of a State of Charge (SOC) and a power threshold value;

correspondingly, the obtaining a corresponding power threshold according to the power limiting instruction includes:

acquiring a real-time SOC;

and determining a corresponding power threshold according to the real-time SOC table look-up.

In one possible implementation manner, the power limiting instruction is an air conditioner economic mode starting instruction;

correspondingly, after receiving the power limitation command sent by the HCU, the method further includes:

and responding to the starting instruction of the air-conditioner economic mode to operate in the air-conditioner economic mode.

In one possible implementation, the adjusting the operating power of the air conditioning system according to the power threshold and the vehicle environment data includes:

performing table lookup according to the power threshold and the vehicle environment data to determine a compressor target power or a PTC heating target power;

controlling the compressor to operate at the target compressor power when the air conditioning system is in refrigeration operation; and controlling the PTC to operate at the PTC heating target power when the air conditioning system is in heating operation.

In one possible implementation manner, the adjusting the operating power of the air conditioning system according to the power threshold and the vehicle environment data further includes:

reducing the rotating speed of a fan of an air conditioning system;

when the air conditioning system operates in a refrigerating mode, controlling an air inlet mode of the air conditioning system to be an internal circulation mode; and when the air-conditioning system is used for heating, controlling the air inlet mode of the air-conditioning system to be an external circulation mode and reducing the opening degree of the air duct valve.

In one possible implementation, the setting the operating state condition includes: the vehicle speed is reduced from large to small to be less than the set speed, the accelerator opening is less than the set opening, the engine is in a flameout state, the battery state is the set state,

wherein the setting state comprises: the method comprises the following steps of non-active cooling, non-active heating, non-gun-plugging charging, non-intelligent charging, setting of the temperature of a battery within a set range and setting of the SOC of the remaining battery to be larger than a first electric quantity value.

In one possible implementation, the method further includes:

and when any one of the vehicle operation parameters does not meet the set operation state condition, controlling the air conditioning system to recover to the state operation before the power limit instruction sent by the HCU is received.

In one possible implementation manner, after the adjusting the operating power of the air conditioning system according to the power threshold and the vehicle environment data, the method further includes:

and when the SOC is smaller than the second electric quantity value, adjusting the operation parameters of the air conditioning system according to the set power threshold value.

In a second aspect, an embodiment of the present application provides a control device for a vehicle air conditioning system, including:

the receiving module is used for receiving a power limiting instruction sent by the hybrid electric vehicle controller HCU;

the acquisition module is used for acquiring a corresponding power threshold according to the power limiting instruction and acquiring vehicle environment data;

the adjusting module is used for adjusting the running power of the air conditioning system according to the power threshold and the vehicle environment data so as to enable the running power of the air conditioning system to be smaller than or equal to the power threshold;

wherein the power adjustment command is generated by the HCU when a vehicle operating parameter meets a set operating condition; the vehicle environment data includes: an inside temperature, an outside temperature, a door state, a window state, and a number of occupants.

In one possible implementation, the power limit command is an air conditioner power derating command; the air conditioner power degradation instruction comprises an SOC and power threshold comparison table;

correspondingly, the obtaining module is specifically configured to obtain a real-time SOC, and determine a corresponding power threshold according to the real-time SOC table lookup.

correspondingly, the adjusting module is further configured to respond to an air-conditioning economy mode starting instruction to operate in an air-conditioning economy mode after receiving the power limitation instruction sent by the HCU.

In a possible implementation manner, the adjusting module is specifically configured to perform table lookup according to the power threshold and the vehicle environment data to determine a target compressor power or a target PTC heating power;

controlling a compressor to operate at the target compressor power when the air conditioning system operates in a refrigerating mode; and controlling the PTC to operate at the PTC heating target power when the air conditioning system is in heating operation.

In a possible implementation manner, the adjusting module is further configured to reduce a rotation speed of a fan of the air conditioning system;

In one possible implementation, the setting the operating state condition includes: the vehicle speed is reduced from big to small to be less than the set speed, the throttle opening is less than the set opening, the engine is in a flameout state, the battery state is the set state,

In a possible implementation manner, the adjusting module is further configured to control the air conditioning system to resume the operation in a state before the receiving of the power limitation instruction sent by the HCU when any one of the vehicle operation parameters does not satisfy the set operation state condition.

In a possible implementation manner, the adjusting module is further configured to adjust the operating parameter of the air conditioning system according to a set power threshold when the SOC is smaller than the second electric quantity value.

In a third aspect, an embodiment of the present application provides a vehicle, which includes a memory, a processor, and a computer program stored in the memory and executable on the processor, and the processor, when executing the computer program, implements the steps of the method according to the first aspect or any one of the possible implementation manners of the first aspect.

In a fourth aspect, embodiments of the present application provide a computer-readable storage medium, which stores a computer program, and the computer program, when executed by a processor, implements the steps of the method according to the first aspect or any one of the possible implementation manners of the first aspect.

The embodiment of the application provides a control method, a vehicle and a storage medium of an air conditioning system for a vehicle, which are characterized in that after a power limiting instruction sent by a hybrid electric vehicle controller HCU is received, a corresponding power threshold value is obtained according to the power limiting instruction, and vehicle environment data are obtained. And adjusting the operating power of the air conditioning system according to the power threshold and the vehicle environment data so that the operating power of the air conditioning system is smaller than or equal to the power threshold. After receiving the power limiting instruction sent by the HCU, the vehicle air conditioning system adjusts the operating power of the air conditioning system by integrating various vehicle environmental parameters such as the temperature in the vehicle, the temperature outside the vehicle, the state of a vehicle door, the state of a vehicle window and the number of passengers, so that the condition that the air conditioning system operates at a high power to increase the energy consumption of the system can be avoided, and meanwhile, the accuracy of the air conditioning system in regulating the temperature in the vehicle and the energy utilization rate are improved.

Drawings

In order to more clearly illustrate the technical solutions in the embodiments of the present application, the drawings required to be used in the embodiments or the prior art description will be briefly described below, and it is obvious that the drawings in the following description are only some embodiments of the present application, and for those skilled in the art, other drawings may be obtained according to these drawings without inventive labor.

Fig. 1 is a flowchart illustrating an implementation of a control method for an air conditioning system of a vehicle according to an embodiment of the present disclosure;

fig. 2 is a flowchart illustrating an implementation of a control method for an air conditioning system of a vehicle according to another embodiment of the present disclosure;

fig. 3 is a schematic structural diagram of a control device of an air conditioning system for a vehicle according to an embodiment of the present application;

fig. 4 is a schematic structural diagram of a vehicle according to an embodiment of the present application.

Detailed Description

In the following description, for purposes of explanation and not limitation, specific details are set forth, such as particular system structures, techniques, etc. in order to provide a thorough understanding of the embodiments of the present application. It will be apparent, however, to one skilled in the art that the present application may be practiced in other embodiments that depart from these specific details. In other instances, detailed descriptions of well-known systems, devices, circuits, and methods are omitted so as not to obscure the description of the present application with unnecessary detail.

The words used in this application are words of description only and not of limitation of the claims. As used in the description of the embodiments and the claims, the singular forms "a", "an" and "the" are intended to include the plural forms as well, unless the context clearly indicates otherwise. Similarly, the term "and/or" as used in this application is meant to encompass any and all possible combinations of one or more of the associated listed. In addition, the term "comprises" as used in this application "

"comprises" and/or "comprising" and/or the like, refer to the presence of stated features, integers, steps, operations, elements, and/or components, but does not preclude the presence or addition of one or more other features, integers, steps, operations, elements, components, and/or groups thereof. Without further limitation, an element defined by the phrase "comprising a …" does not exclude the presence of another identical element in a process, method, or apparatus that comprises the element. In the present application, each embodiment may be different from the other embodiments in terms of emphasis, and the same and similar parts between the respective embodiments may be referred to each other. For methods, products, etc. of the embodiment disclosures, reference may be made to the description of the method section for relevance if it corresponds to the method section of the embodiment disclosure.

The fuel economy, the comfort and the safety of the automobile are comprehensively considered, and various driving modes are designed for the hybrid electric automobile. The driving modes can be different according to different vehicle types, but the vehicle generally comprises the following three driving modes: EV mode, economy mode, and AUTO mode.

When the automobile runs in the EV mode, only the motor provides power for the automobile, and the engine does not provide power, so that the oil consumption can be greatly reduced. When the automobile runs in the ECO economic mode, an Electronic Control Unit (ECU) of the automobile intelligently and comprehensively analyzes and calculates the optimal fuel quantity for the engine according to an automatic gear shift, the engine speed, the transmission oil temperature and the like, so that the oil consumption is reduced. When the automobile runs in the AUTO mode, the system automatically adjusts the power output according to the opening degrees of the engine, the motor and the accelerator, each performance of the automobile is stable and balanced, and the power performance and the economic performance are kept in a balanced state.

In addition, on the basis of considering the influence of the electric air conditioner on the whole performance of the electric automobile, a comfortable mode and an economic mode are correspondingly set for the air conditioning system for the automobile. The existing comfort mode and economy mode allow for control of the air conditioning power, which is relatively higher in comfort mode than in economy mode. The calibration temperature adjustment time thresholds of the vehicle air conditioning system are different under different air conditioning modes. Specifically, the calibrated temperature adjustment time threshold corresponding to the comfort mode is smaller than that of the economy mode, and the time for the air conditioning system to operate and adjust the temperature in the vehicle to the set temperature in the comfort mode is short.

However, at present, the HCU is relatively independent of the vehicle air conditioning system and the vehicle driving mode energy control, and does not consider the situation that the air conditioning system operates at an excessively high power when operating alone. Specifically, when the vehicle is in a parking state, if the air conditioning system is operated, the vehicle is in a power consumption state of 3kw or more, and maintaining the state for a long time increases the loss of vehicle components. The embodiment of the application aims to solve the problem of how to adjust the operating power of the air conditioning system in the parking and shutdown state of the vehicle so as to reduce energy consumption and loss of vehicle components and improve the energy utilization rate.

To make the objects, technical solutions and advantages of the present application more apparent, the following description is given by way of example with reference to the accompanying drawings.

Fig. 1 is a flowchart illustrating an implementation of a control method for an air conditioning system of a vehicle according to an embodiment of the present application, where as shown in fig. 1, the method includes the following steps:

s101, receiving a power limiting command sent by the HCU. Wherein the power adjustment command is generated by the HCU when the vehicle operating parameters meet the set operating conditions.

The HCU detects the vehicle running parameters in real time or detects the vehicle running parameters at set time intervals. The setting time is not suitable to be too long, so that the operating parameters of the air conditioning system can be quickly adjusted. When the vehicle operation parameters meet the set operation state conditions, the vehicle is in a stop state and the engine is in a stop state.

In the specific implementation process, when the condition of the set running state is judged to be met, various parameters in the vehicle speed, the accelerator opening, the engine starting and stopping state, the driving mode and the power battery state are integrated, so that the accuracy of judging the running state of the vehicle is ensured, and the reduction of user experience caused by misoperation of regulating the running parameters of the air conditioning system is avoided.

And S102, acquiring a corresponding power threshold according to the power limiting instruction, and acquiring vehicle environment data. Wherein the vehicle environment data includes: interior temperature, exterior temperature, door state, window state, and occupant count.

And S103, adjusting the running power of the air conditioning system according to the power threshold and the vehicle environment data so that the running power of the air conditioning system is smaller than or equal to the power threshold.

In the specific implementation process, in order to ensure that the temperature in the air conditioning system is adjusted to reach the set temperature within the calibrated temperature adjustment time threshold, the influence of the temperature in the air conditioning system, the temperature outside the vehicle, the state of a vehicle door, the state of a vehicle window and the number of passengers on the determination of the power of the air conditioning system is different in different running states.

When the air conditioning system operates in a refrigerating mode, on the basis of the same other conditions, the influence of a single factor on the power of the air conditioning system is considered, and the higher the temperature in the vehicle is, the higher the corresponding power of the air conditioning system is; the higher the temperature outside the vehicle is, the higher the power of the corresponding air conditioning system is; when the vehicle door is opened or the number of the opened vehicle doors is large, the power of the corresponding air conditioning system is higher; when the window state is not opened or the opening number is large, the power of the corresponding air conditioning system is higher; the greater the number of occupants, the higher the corresponding air conditioning system power.

Correspondingly, when the air-conditioning system is in heating operation, on the basis of the same other conditions, the influence of a single factor on the power of the air-conditioning system is considered, and the lower the temperature in the vehicle is, the higher the corresponding power of the air-conditioning system is; the lower the temperature outside the vehicle is, the higher the power of the corresponding air conditioning system is; when the vehicle door is opened or the number of the opened vehicle doors is large, the power of the corresponding air conditioning system is higher; when the window states are not opened or the opening number is large, the power of the corresponding air conditioning system is higher; the smaller the number of occupants, the higher the corresponding air conditioning system power.

In the embodiment, the running power of the air conditioning system is adjusted by synthesizing various parameters of the temperature in the vehicle, the temperature outside the vehicle, the state of the vehicle door, the state of the vehicle window and the number of passengers, so that the temperature in the vehicle of the air conditioning system can reach the set temperature in a proper time, the reduction of user experience is avoided, the control accuracy of the running power of the air conditioning system is improved, and the energy consumption and the energy utilization rate of the air conditioning system are optimized.

In a possible implementation manner, when the operation parameters are changed in the vehicle operation process and any one of the vehicle operation parameters does not meet the set operation state condition, the air conditioning system is controlled to be restored to the operation state before the power limit instruction sent by the HCU is received.

In the embodiment, after receiving the power limiting command sent by the hybrid vehicle controller HCU, the corresponding power threshold is obtained according to the power limiting command, and the vehicle environment data is obtained. And adjusting the operating power of the air conditioning system according to the power threshold and the vehicle environment data so that the operating power of the air conditioning system is smaller than or equal to the power threshold. After receiving the power limiting instruction sent by the HCU, the vehicle air conditioning system adjusts the operating power of the air conditioning system by integrating various vehicle environmental parameters such as the temperature in the vehicle, the temperature outside the vehicle, the state of a vehicle door, the state of a vehicle window and the number of passengers, so that the condition that the air conditioning system operates at higher power and the energy consumption of the system is increased can be avoided, and meanwhile, the accuracy of the air conditioning system in regulating the temperature in the vehicle and the energy utilization rate are improved.

In view of the fact that the vehicle operation parameters are related to a large number of parameter types, the operation state conditions set in step S101 may be different in different embodiments.

Optionally, the set operating condition includes two or more of a vehicle speed, an accelerator opening, an engine start-stop state, a driving mode, and a power battery state.

In one possible implementation, setting the operating condition includes: the vehicle speed is less than the set speed, the accelerator opening is less than the set opening, the engine is in a flameout state, and the power battery state is a set state.

Wherein, the setting state includes: the battery temperature is in a set range, and the SOC of the battery residual capacity is greater than a first electric quantity value, namely the battery state is relatively stable, the power requirement of the operation of the air conditioning system can be met, and the energy consumption of the air conditioning system is reduced without influencing the normal operation of the battery.

In one embodiment, the air conditioning system is operated to regulate the battery temperature when the battery is actively cooled, actively heated, gun plugged in, or intelligently plugged in. At the moment, the set condition is not met, and the air conditioning system is not started to limit the power so as to ensure the normal operation of the battery.

In this embodiment, synthesize speed of a motor vehicle, throttle opening, engine start-stop state, driving mode and the multinomial operating parameter of power battery state and carry out vehicle running state and judge, guarantee to judge the accuracy, avoid adjusting the maloperation of air conditioning system operating parameter to avoid air conditioner air-out temperature or air-out state to change and influence user experience, can also avoid the maloperation to lead to putting in order car energy balance state to change.

In different embodiments, in the process of adjusting the operating power of the air conditioning system according to the power threshold and the vehicle environment data in step S203, the operating power of the air conditioning system needs to be calibrated in advance, so as to ensure that the air conditioning system operates at a lower power and reaches the temperature set by the user within the set time under different vehicle environment data, and ensure that the refrigeration effect can meet the user requirement. In various embodiments, calibration is performed by the HCU or by the air conditioning system.

In one possible implementation, the power limit command is an air conditioner power derating command; the air conditioner power degradation instruction comprises an SOC and power threshold comparison table.

Correspondingly, in step S102, obtaining a corresponding power threshold according to the power limiting instruction includes: acquiring a real-time SOC; and determining a corresponding power threshold according to a real-time SOC table look-up.

In the present embodiment, the advance calibration work of the air conditioning system operation power is performed by the HCU manufacturer. When the air conditioning system adjusts the running state of the air conditioning system based on the air conditioning power degradation instruction, the current air conditioning running mode does not need to be changed. Specifically, in the process of reducing the SOC based on the SOC-power threshold comparison table, the step-by-step degradation control of the running power of the air conditioning system is achieved, and the energy efficiency of the whole vehicle is improved.

In one possible implementation, the power limit command is an air conditioner economy mode start command.

Correspondingly, after receiving the power limitation command sent by the HCU, the method further includes: and responding to the starting instruction of the air-conditioning economy mode to operate in the air-conditioning economy mode.

In the present embodiment, the advance calibration of the operating power of the air conditioning system is performed by the manufacturer of the air conditioning system. After receiving a power limiting instruction sent by the HCU, responding to an air-conditioning economic mode starting instruction to operate in an air-conditioning economic mode so as to realize low-energy-consumption operation of an air-conditioning system and ensure that the temperature in the vehicle reaches the temperature set by a user within a time threshold value of adjusting the standard temperature corresponding to the economic mode.

In one possible implementation, adjusting the operating power of the air conditioning system according to the power threshold and the vehicle environment data comprises:

performing table lookup according to the power threshold and vehicle environment data to determine the target power of the compressor or the PTC heating target power;

controlling the compressor to operate at the target power of the compressor when the air conditioning system operates in a refrigerating mode; and controlling the PTC to operate at the PTC heating target power when the air conditioning system is in heating operation.

Wherein, in the cooling mode, the compressor operates and refrigerates, and in the heating mode, the PTC heater operates and heats. A temperature and power comparison table is respectively set for the air-conditioning cooling mode or the heating mode. In the heating mode, the lower the temperature in the vehicle is, the higher the corresponding target power value is; the higher the in-vehicle temperature is, the lower the corresponding target power value is. Correspondingly, in the refrigeration mode, the lower the temperature in the vehicle is, the lower the corresponding target power value is; the higher the temperature in the vehicle is, the higher the corresponding target power value is.

In this embodiment, the target power value is determined based on a table lookup manner, so that the efficiency of adjusting the air conditioner operation parameters and controlling the energy balance of the whole vehicle is improved.

The scheme for adjusting the running power of the air conditioning system according to the temperature in the vehicle is mainly introduced, and on the basis of the embodiment, the energy consumption of the air conditioning system can be optimized and the temperature adjusting efficiency can be improved through the auxiliary control of the adjustment of the rotating speed of the fan and the air inlet mode. In different embodiments, the target fan rotating speed and the target air inlet mode are adjusted in different manners.

In one possible implementation manner, adjusting the operating power of the air conditioning system according to the power threshold and the vehicle environment data further includes:

reducing the rotating speed of a fan of an air conditioning system;

when the air conditioning system operates in a refrigerating mode, controlling an air inlet mode of the air conditioning system to be an internal circulation mode; when the air-conditioning system is in heating operation, the air inlet mode of the air-conditioning system is controlled to be an external circulation mode, and the opening degree of the air duct valve is reduced.

In this embodiment, when the air conditioning system is operated in a refrigerating mode, the rotating speed of the fan is reduced and the air supply mode is adjusted to be an internal circulation mode based on the temperature value in the vehicle, so that the change of the flowing state of air in the vehicle is reduced while the operating power of the air conditioning system is reduced, the phenomenon that the flowing state of the air in the vehicle is changed too much to reduce the user feeling is avoided, and the user experience is improved while the energy consumption of the air conditioning system is reduced. When the air conditioning system is in heating operation, the rotating speed of the fan is reduced and the opening of the air duct valve is reduced based on the temperature value in the vehicle, so that the influence of the air flowing state outside the vehicle on the temperature in the vehicle is reduced while the operation power of the air conditioning system is reduced.

In one possible implementation, reducing the rotational speed of the air conditioning system fan comprises: and adjusting the air conditioning system to be rated with the lowest fan rotating speed.

In the embodiment, the air conditioning system is adjusted to operate at the rated lowest fan rotating speed, so that the energy consumption of the fan is reduced, and the energy consumption of the whole air conditioning system is reduced to the maximum extent.

In one possible implementation manner, after adjusting the air conditioning system operation power according to the power threshold and the vehicle environment data, the method further comprises the following steps:

and when the SOC is smaller than the second electric quantity value, adjusting the operating parameters of the air conditioning system according to the set power threshold value.

In this embodiment, considering that the air conditioning system is maintained to operate by continuous discharge after the SOC, there is a risk of battery loss caused by over discharge, and when the SOC is smaller than the second electric quantity value, the control strategy of the air conditioning system is adjusted in time to reduce the energy consumption of the air conditioning system, prolong the operation time of the air conditioning system, and avoid rapid temperature change in the vehicle to reduce user experience.

In one embodiment, the first electric quantity value is 60% and the second electric quantity value is 10%, when the SOC is continuously reduced and is reduced to less than 10%, the active limit of the air conditioning power is triggered to protect the high voltage battery, and the air conditioning system adjusts the upper limit value of the internal control compressor power or the PTC power by setting the power threshold.

In an embodiment, a flowchart of a method for controlling an air conditioning system for a vehicle is shown in fig. 2, and the method includes:

s201, receiving an air conditioner power degradation instruction sent by an HCU; the air conditioner power degradation instruction comprises an SOC and power threshold comparison table.

S202, acquiring a real-time SOC, determining a corresponding power threshold according to a real-time SOC table look-up, and acquiring vehicle environment data; wherein the vehicle environment data includes: interior temperature, exterior temperature, door state, window state, and occupant count.

And S203, adjusting the running power of the air conditioning system according to the power threshold and the vehicle environment data so that the running power of the air conditioning system is smaller than or equal to the power threshold.

In this embodiment, an air conditioner power degradation instruction sent by the HCU is received, and on the basis of not changing the current air conditioner system operation mode, the air conditioner system operation parameters are adjusted based on the SOC and power threshold comparison table in the air conditioner power degradation instruction, so as to ensure that the air conditioner system meets the user temperature adjustment requirement, and meanwhile, the air conditioner system operation power is matched with the SOC, so as to ensure that the energy balance of the whole vehicle is ensured.

It should be understood that, the sequence numbers of the steps in the foregoing embodiments do not imply an execution sequence, and the execution sequence of each process should be determined by its function and inherent logic, and should not constitute any limitation to the implementation process of the embodiments of the present application.

In the following, embodiments of the apparatus of the present application are provided, and for details which are not described in detail therein, reference may be made to the corresponding method embodiments described above.

Fig. 3 is a schematic structural diagram of a control device of an air conditioning system for a vehicle according to an embodiment of the present application, and as shown in fig. 3, for convenience of explanation, only a portion related to the embodiment of the present application is shown, and as shown in fig. 3, the control device includes: a receiving module 301, an obtaining module 302 and an adjusting module 303.

The receiving module 301 is configured to receive a power limitation instruction sent by the HCU of the hybrid vehicle controller.

The obtaining module 302 is configured to obtain a corresponding power threshold according to the power limiting instruction, and obtain vehicle environment data.

And the adjusting module 303 is configured to adjust the operating power of the air conditioning system according to the power threshold and the vehicle environment data, so that the operating power of the air conditioning system is smaller than or equal to the power threshold.

The power adjusting instruction is generated by the HCU when the vehicle operation parameters meet the set operation conditions; the vehicle environment data includes: an inside temperature, an outside temperature, a door state, a window state, and a number of occupants.

Correspondingly, the obtaining module 302 is specifically configured to obtain the real-time SOC, and determine the corresponding power threshold according to the real-time SOC table lookup.

In one possible implementation, the power limit instruction is an air conditioner economic mode start instruction;

correspondingly, the adjusting module 303 is further configured to operate in the air-conditioning economy mode in response to the air-conditioning economy mode starting instruction after receiving the power limitation instruction sent by the HCU.

In a possible implementation manner, the adjusting module 303 is specifically configured to perform table lookup according to the power threshold and vehicle environment data to determine a target power of the compressor or a target power of the PTC heating;

controlling the compressor to operate at the target power of the compressor when the air conditioning system is in refrigeration operation; and controlling the PTC to operate at the PTC heating target power when the air conditioning system is in heating operation.

In a possible implementation manner, the adjusting module 303 is further configured to reduce the rotation speed of the fan of the air conditioning system;

In one possible implementation, setting the operating condition includes: the vehicle speed is reduced from large to small to be less than the set speed, the accelerator opening is less than the set opening, the engine is in a flameout state, the battery state is the set state,

wherein, the setting state includes: the method comprises the following steps of non-active cooling, non-active heating, non-gun-plugging charging, non-intelligent charging, setting of the temperature of a battery within a set range and setting of the SOC of the remaining battery to be larger than a first electric quantity value.

In a possible implementation manner, the adjusting module 303 is further configured to control the air conditioning system to return to the state operation before the power limitation instruction sent by the HCU is received when any one of the vehicle operation parameters does not satisfy the set operation state condition.

In a possible implementation manner, the adjusting module 303 is further configured to adjust the operation parameter of the air conditioning system according to the set power threshold when the SOC is smaller than the second electric quantity value.

In the embodiment, after receiving a power limiting instruction sent by the hybrid electric vehicle controller HCU, a corresponding power threshold is obtained according to the power limiting instruction, and vehicle environment data is obtained. And adjusting the operating power of the air conditioning system according to the power threshold and the vehicle environment data so that the operating power of the air conditioning system is smaller than or equal to the power threshold. After receiving the power limiting instruction sent by the HCU, the vehicle air conditioning system adjusts the operating power of the air conditioning system by integrating various vehicle environmental parameters such as the temperature in the vehicle, the temperature outside the vehicle, the state of a vehicle door, the state of a vehicle window and the number of passengers, so that the condition that the air conditioning system operates at higher power and the energy consumption of the system is increased can be avoided, and meanwhile, the accuracy of the air conditioning system in regulating the temperature in the vehicle and the energy utilization rate are improved.

Fig. 4 is a schematic structural diagram of a vehicle according to an embodiment of the present application. As shown in fig. 4, the vehicle 4 of the embodiment includes: a processor 40, a memory 41 and a computer program 42 stored in said memory 41 and executable on said processor 40. The processor 40 implements the steps in the above-described embodiments of the control method for each vehicle air conditioning system, such as steps S101 to S103 shown in fig. 1, when executing the computer program 42. Alternatively, the processor 40, when executing the computer program 42, implements the functions of the modules/units in the device embodiments described above, such as the functions of the modules 301 to 303 shown in fig. 3.

Illustratively, the computer program 42 may be partitioned into one or more modules/units, which are stored in the memory 41 and executed by the processor 40 to accomplish the present application. The one or more modules/units may be a series of computer program instruction segments capable of performing specific functions describing the execution of the computer program 42 in the vehicle 4. For example, the computer program 42 may be divided into the modules 301 to 303 shown in fig. 3.

The vehicle 4 may be a computing device such as a desktop computer, a notebook, a palm computer, and a cloud server. The vehicle 4 may include, but is not limited to, a processor 40, a memory 41. Those skilled in the art will appreciate that fig. 4 is merely an example of a vehicle 4 and does not constitute a limitation of vehicle 4 and may include more or fewer components than shown, or some components in combination, or different components, e.g., the vehicle may also include input-output devices, network access devices, buses, etc.

The Processor 40 may be a Central Processing Unit (CPU), other general purpose Processor, a Digital Signal Processor (DSP), an Application Specific Integrated Circuit (ASIC), a Field Programmable Gate Array (FPGA) or other Programmable logic device, discrete Gate or transistor logic, discrete hardware components, etc. A general purpose processor may be a microprocessor or the processor may be any conventional processor or the like.

The memory 41 may be an internal storage unit of the vehicle 4, such as a hard disk or a memory of the vehicle 4. The memory 41 may also be an external storage device of the vehicle 4, such as a plug-in hard disk, a Smart Media Card (SMC), a Secure Digital (SD) Card, a Flash memory Card (Flash Card), or the like, provided on the vehicle 4. Further, the memory 41 may also include both an internal storage unit and an external storage device of the vehicle 4. The memory 41 is used to store the computer program and other programs and data required by the vehicle. The memory 41 may also be used to temporarily store data that has been output or is to be output.

It will be apparent to those skilled in the art that, for convenience and brevity of description, only the above-mentioned division of the functional units and modules is illustrated, and in practical applications, the above-mentioned function distribution may be performed by different functional units and modules according to needs, that is, the internal structure of the apparatus is divided into different functional units or modules to perform all or part of the above-mentioned functions. Each functional unit and module in the embodiments may be integrated in one processing unit, or each unit may exist alone physically, or two or more units are integrated in one unit, and the integrated unit may be implemented in a form of hardware, or in a form of software functional unit. In addition, specific names of the functional units and modules are only for convenience of distinguishing from each other, and are not used for limiting the protection scope of the present application. The specific working processes of the units and modules in the system may refer to the corresponding processes in the foregoing method embodiments, and are not described herein again.

In the above embodiments, the descriptions of the respective embodiments have respective emphasis, and reference may be made to the related descriptions of other embodiments for parts that are not described or illustrated in a certain embodiment.

Those of ordinary skill in the art would appreciate that the various illustrative elements and algorithm steps described in connection with the embodiments disclosed herein may be implemented as electronic hardware or combinations of computer software and electronic hardware. Whether such functionality is implemented as hardware or software depends upon the particular application and design constraints imposed on the implementation. Skilled artisans may implement the described functionality in varying ways for each particular application, but such implementation decisions should not be interpreted as causing a departure from the scope of the present application.

In the embodiments provided in the present application, it should be understood that the disclosed apparatus/vehicle and method may be implemented in other ways. For example, the above-described device/vehicle embodiments are merely illustrative, and for example, the division of the modules or units is only one logical division, and there may be other divisions in actual implementation, for example, multiple units or components may be combined or integrated into another system, or some features may be omitted, or not implemented. In addition, the shown or discussed mutual coupling or direct coupling or communication connection may be an indirect coupling or communication connection through some interfaces, devices or units, and may be in an electrical, mechanical or other form.

The units described as separate parts may or may not be physically separate, and parts displayed as units may or may not be physical units, may be located in one place, or may be distributed on a plurality of network units. Some or all of the units can be selected according to actual needs to achieve the purpose of the solution of the embodiment.

In addition, functional units in the embodiments of the present application may be integrated into one processing unit, or each unit may exist alone physically, or two or more units are integrated into one unit. The integrated unit can be realized in a form of hardware, and can also be realized in a form of a software functional unit.

The integrated module/unit, if implemented in the form of a software functional unit and sold or used as a stand-alone product, may be stored in a computer readable storage medium. Based on such understanding, all or part of the flow in the method of the embodiments described above may be implemented by a computer program, which may be stored in a computer readable storage medium, and when the computer program is executed by a processor, the steps of the embodiments of the control method for the vehicle air conditioning system may be implemented. Wherein the computer program comprises computer program code, which may be in the form of source code, object code, an executable file or some intermediate form, etc. The computer-readable medium may include: any entity or device capable of carrying the computer program code, recording medium, usb disk, removable hard disk, magnetic disk, optical disk, computer Memory, read-Only Memory (ROM), random Access Memory (RAM), electrical carrier wave signals, telecommunications signals, software distribution medium, and the like.

The above-mentioned embodiments are only used for illustrating the technical solutions of the present application, and not for limiting the same; although the present application has been described in detail with reference to the foregoing embodiments, it should be understood by those of ordinary skill in the art that: the technical solutions described in the foregoing embodiments may still be modified, or some technical features may be equivalently replaced; such modifications and substitutions do not substantially depart from the spirit and scope of the embodiments of the present application and are intended to be included within the scope of the present application.

Claims

1. A control method of an air conditioning system for a vehicle, comprising:

receiving a power limiting instruction sent by a hybrid electric vehicle controller HCU;

2. The method of claim 1, wherein the power limit command is an air conditioner power derating command; the air conditioner power degradation instruction comprises a comparison table of the residual battery capacity SOC and a power threshold value;

correspondingly, the obtaining of the corresponding power threshold according to the power limitation instruction includes:

acquiring a real-time SOC;

3. The method of claim 1, wherein the power limit command is an air conditioning economy mode start command;

and responding to the starting instruction of the air-conditioning economy mode to operate in the air-conditioning economy mode.

4. The method of claim 1, wherein said adjusting air conditioning system operating power based on said power threshold and said vehicle environment data comprises:

5. The method of claim 4, wherein adjusting air conditioning system operating power based on the power threshold and the vehicle environment data further comprises:

reducing the rotating speed of a fan of an air conditioning system;

6. The control method according to claim 1, wherein the setting the operating state condition includes: the vehicle speed is reduced from large to small to be less than the set speed, the accelerator opening is less than the set opening, the engine is in a flameout state, the battery state is the set state,

7. The control method according to claim 6, characterized by further comprising:

8. The control method of any one of claims 1 to 7, further comprising, after said adjusting air conditioning system operating power based on said power threshold and said vehicle environment data:

9. A vehicle comprising a memory, a processor and a computer program stored in the memory and executable on the processor, characterized in that the steps of the method according to any of the preceding claims 1 to 8 are implemented when the computer program is executed by the processor.

10. A computer-readable storage medium, in which a computer program is stored which, when being executed by a processor, carries out the steps of the method according to any one of claims 1 to 8.