Automatic air conditioner control method and device for hybrid vehicle, vehicle and storage medium

Abstract

The invention relates to an automatic air conditioner control method and device for a hybrid vehicle, the vehicle and a storage medium, and the method comprises the steps that when a heating demand instruction is received, the temperature difference value between the air conditioner air opening temperature and the target temperature corresponding to the heating demand instruction is determined; detecting the state of charge of a power battery of the hybrid vehicle; in response to the fact that the charge state is larger than a preset charge threshold value, a first air conditioner control strategy is determined according to the temperature difference value, and the first air conditioner control strategy is used for controlling a heater and a hybrid air door of the hybrid vehicle to conduct heating; in response to the condition that the charge state is not larger than a preset charge threshold value, a second air conditioner control strategy is determined according to the temperature difference value, and the second air conditioner control strategy is used for controlling a heater, a hybrid air door and an engine of the hybrid vehicle to conduct heating; and executing the first air conditioner control strategy or the second air conditioner control strategy. Different control strategies are determined on the basis of the air conditioner air port temperature and the target temperature, the heater, the hybrid air door and the engine are controlled to conduct cooperative heating, and energy consumption of the hybrid vehicle is reduced.

Description

Technical Field

[0001] The present invention relates to the technical field of vehicle air conditioning thermal management, and in particular to a hybrid vehicle automatic air conditioning control method, a hybrid vehicle automatic air conditioning control device, a vehicle and a storage medium. Background Art

[0002] With the popularity of hybrid vehicles, users' requirements for driving comfort and vehicle energy consumption are gradually increasing. The car air conditioning system not only affects the driving comfort of the car, but also has an important impact on the vehicle's range. Automatic air conditioning is controlled by targets such as ambient temperature, interior temperature, and set temperature. However, the automatic air conditioning control in hybrid vehicles currently wastes the energy of the vehicle due to insufficient utilization of engine heat, which affects the user's driving experience and increases the vehicle's energy consumption. Summary of the invention

[0003] One of the purposes of the present invention is to provide a hybrid vehicle automatic air conditioning control method to solve the problem of high energy consumption of automatic air conditioning in hybrid vehicles in the prior art; the second purpose is to provide a hybrid vehicle automatic air conditioning control device; the third purpose is to provide a vehicle; and the fourth purpose is to provide a storage medium.

[0004] In order to achieve the above object, the technical solution adopted by the present invention is as follows:

[0005] A hybrid vehicle automatic air conditioning control method, the method comprising:

[0006] When receiving a heating demand instruction, determining a temperature difference between the air outlet temperature of the air conditioner and a target temperature corresponding to the heating demand instruction;

[0007] Detect the state of charge of the power battery of hybrid vehicles;

[0008] In response to the state of charge being greater than a preset charge threshold, determining a first air conditioning control strategy according to the temperature difference, the first air conditioning control strategy being used to control a heater and a mixing damper of the hybrid vehicle for heating;

[0009] In response to the state of charge being not greater than a preset charge threshold, determining a second air conditioning control strategy according to the temperature difference, the second air conditioning control strategy being used to control a heater, a mixing damper and an engine of the hybrid vehicle for heating;

[0010] Execute the first air-conditioning control strategy or the second air-conditioning control strategy.

[0011] Optionally, in response to the state of charge being greater than a preset charge threshold, the step of determining a first air conditioning control strategy according to the temperature difference includes:

[0012] In response to the state of charge being greater than a preset charge threshold, determining whether the temperature difference is greater than a preset first temperature threshold;

[0013] In response to the temperature difference being greater than a preset first temperature threshold, determining that the first air conditioning control strategy is to increase the power of the heater and the blend door is in a full heat position;

[0014] In response to the temperature difference being not greater than a preset first temperature threshold, obtaining an engine water temperature of the hybrid vehicle;

[0015] A first air conditioning control strategy is determined according to the engine water temperature and the temperature difference.

[0016] Optionally, the step of determining the first air conditioning control strategy according to the engine water temperature and the temperature difference includes:

[0017] determining a damper position based on the engine water temperature and the temperature difference;

[0018] The first air conditioning control strategy is determined to maintain the power of the heater and the blend door at the door position.

[0019] Optionally, the step of determining the air door position based on the engine water temperature and the temperature difference comprises:

[0020] determining whether the engine water temperature is greater than the target temperature;

[0021] In response to the engine water temperature being greater than the target temperature, determining that the damper position is in a full hot position;

[0022] In response to the engine water temperature being greater than the target temperature, the temperature difference is used as a feedback value to perform closed-loop control to determine the damper position.

[0023] Optionally, in response to the state of charge being not greater than a preset charge threshold, the step of determining a second air conditioning control strategy according to the temperature difference includes:

[0024] In response to the state of charge being not greater than a preset charge threshold, determining whether the temperature difference is greater than a preset second temperature threshold;

[0025] In response to the temperature difference being greater than a preset second temperature threshold, determining that the second air conditioning control strategy is to increase the power of the heater, start the engine and place the blend door in a full heat position;

[0026] In response to the temperature difference being not greater than a preset second temperature threshold, obtaining a current position of the mixing damper;

[0027] A second air conditioning control strategy is determined according to the current position and the temperature difference.

[0028] Optionally, the step of determining a second air conditioning control strategy according to the current position and the temperature difference includes:

[0029] determining a working state of the heater according to the current position;

[0030] determining the damper position according to the temperature difference;

[0031] The second air conditioning control strategy is determined as starting the engine, the heater being in the working state, and the mixing door being in the door position.

[0032] Optionally, the step of determining the working state of the heater according to the current position includes:

[0033] Determining whether the current position is a full heat position;

[0034] In response to the current position being the full-heat position, determining that the operating state of the heater is enabled for operation;

[0035] In response to the current position not being the full heat position, determining that the operating state of the heater is operating off.

[0036] Optionally, the step of determining the damper position according to the temperature difference comprises:

[0037] The temperature difference is used as a feedback value to perform closed-loop control and determine the damper position.

[0038] Optionally, the step of determining the temperature difference between the air conditioning outlet temperature and the target temperature corresponding to the heating demand instruction includes:

[0039] Get the air outlet temperature of the air conditioner;

[0040] Calculating a first difference between the air conditioning outlet temperature and the target temperature corresponding to the heating demand instruction;

[0041] The absolute value of the first difference is determined as the temperature difference.

[0042] A hybrid vehicle automatic air conditioning control device, the device comprising:

[0043] A receiving module, configured to determine, upon receiving a heating demand instruction, a temperature difference between an air conditioning outlet temperature and a target temperature corresponding to the heating demand instruction;

[0044] A first detection module detects the state of charge of the power battery of the hybrid vehicle;

[0045] a first heating module, configured to determine a first air conditioning control strategy according to the temperature difference in response to the state of charge being greater than a preset charge threshold, wherein the first air conditioning control strategy is configured to control a heater and a mixing damper of the hybrid vehicle for heating;

[0046] a second heating module, configured to determine a second air conditioning control strategy according to the temperature difference in response to the state of charge being not greater than a preset charge threshold, wherein the second air conditioning control strategy is configured to control a heater, a mixing damper and an engine of the hybrid vehicle for heating;

[0047] An execution module is used to execute the first air-conditioning control strategy or the second air-conditioning control strategy.

[0048] A vehicle comprises a processor, a memory and a computer program stored in the memory and capable of running on the processor, wherein the computer program, when executed by the processor, implements the steps of the automatic air conditioning control method for a hybrid vehicle as described above.

[0049] A computer-readable storage medium stores a computer program, and when the computer program is executed by a processor, the steps of the hybrid vehicle automatic air conditioning control method as described above are implemented.

[0050] Beneficial effects of the present invention:

[0051] (1) The embodiment of the present invention determines the temperature difference between the air-conditioning outlet temperature and the target temperature when receiving a heating demand instruction, and then determines the coordination strategy of the heater, the engine, and the mixing damper based on the temperature difference, that is, the first air-conditioning control strategy and the second air-conditioning control strategy. Through the first air-conditioning control strategy or the third air-conditioning control strategy, each actuator is controlled to perform a corresponding action, thereby realizing coordinated control and reducing the number of actuators that need to be independently controlled, so that the heating control process is simpler when the air-conditioning is automatically heated.

[0052] (2) By controlling the heater, engine, and hybrid damper in a coordinated manner, the engine can intervene in the heating process of the automatic air conditioner at the appropriate time. By combining the charge state of the hybrid vehicle with the engine to control the automatic air conditioner, the heat of the engine is fully utilized, the time that the hybrid vehicle uses only the power of the power battery to power the heater is reduced, and the overall energy consumption of the hybrid vehicle is reduced. BRIEF DESCRIPTION OF THE DRAWINGS

[0053] Figure 1 A flowchart of an embodiment of a hybrid vehicle automatic air conditioning control method of the present invention;

[0054] Figure 2 A flowchart of another embodiment of a hybrid vehicle automatic air conditioning control method of the present invention;

[0055] Figure 3 A schematic diagram of an application architecture of an embodiment of a hybrid vehicle automatic air conditioning control method of the present invention;

[0056] Figure 4 It is a structural block diagram of an embodiment of a hybrid vehicle automatic air conditioning control device of the present invention;

[0057] Figure 5 A schematic diagram of a processor and a storage medium of a vehicle embodiment of the present invention;

[0058] Figure 6 A schematic diagram of a computer storage medium embodiment of the present invention. DETAILED DESCRIPTION

[0059] The following will describe the embodiments of the present invention with reference to the accompanying drawings and preferred embodiments. Those skilled in the art can easily understand other advantages and effects of the present invention from the contents disclosed in this specification. The present invention can also be implemented or applied through other different specific embodiments, and the details in this specification can also be modified or changed in various ways based on different viewpoints and applications without departing from the spirit of the present invention. It should be understood that the preferred embodiments are only for illustrating the present invention, not for limiting the scope of protection of the present invention.

[0060] It should be noted that the illustrations provided in the following embodiments are only schematic illustrations of the basic concept of the present invention, and thus the drawings only show components related to the present invention rather than being drawn according to the number, shape and size of components in actual implementation. In actual implementation, the type, quantity and proportion of each component may be changed arbitrarily, and the component layout may also be more complicated.

[0061] Reference Figure 1 , shows a flowchart of a hybrid vehicle automatic air conditioning control method embodiment of the present invention. The hybrid vehicle automatic air conditioning control method may specifically include the following steps:

[0062] Step 101, upon receiving a heating demand instruction, determining a temperature difference between an air conditioning outlet temperature and a target temperature corresponding to the heating demand instruction;

[0063] When a heating demand instruction is received, that is, automatic air conditioning heating is required to heat the passenger compartment, the temperature difference between the air conditioning outlet temperature and the target temperature corresponding to the heating demand instruction can be determined. Among them, the air conditioning outlet temperature is the temperature of the air outlet of the automatic air conditioner. The target temperature is the temperature required by the heating demand instruction. For example, the user sets the temperature reached by the heating demand instruction to 28 degrees Celsius by operating the center console, and the 28 degrees Celsius is the target temperature. The current air conditioning outlet temperature is 25 degrees Celsius, and the temperature difference is 3 degrees Celsius. In addition, the heating demand instruction can be issued by the user or the vehicle's own controller when controlling the automatic air conditioning on the vehicle. The heating demand instruction indicates that there is a need for heating in the current passenger compartment.

[0064] Step 102, detecting the state of charge of the power battery of the hybrid vehicle;

[0065] After receiving the heating demand instruction, the charge state of the power battery of the hybrid vehicle can also be detected to determine whether the current power of the power battery can meet the heating demand.

[0066] Step 103, in response to the state of charge being greater than a preset charge threshold, determining a first air conditioning control strategy according to the temperature difference, wherein the first air conditioning control strategy is used to control a heater and a mixing damper of the hybrid vehicle for heating;

[0067] When the state of charge is greater than the preset charge threshold, that is, the current power of the power battery can meet the heating demand, the first air conditioning control strategy can be determined according to the temperature difference in response to the state of charge being greater than the preset charge threshold. The heater and the mixing damper of the hybrid vehicle are controlled in coordination through the first air conditioning control strategy, so as to achieve heating. Among them, the first air conditioning control strategy is a control strategy for the relevant actuators of the automatic air conditioning heating when the state of charge is greater than the preset charge threshold.

[0068] Step 104, in response to the state of charge being not greater than a preset charge threshold, determining a second air conditioning control strategy according to the temperature difference, the second air conditioning control strategy being used to control a heater, a mixing damper and an engine of the hybrid vehicle for heating;

[0069] When the state of charge is not greater than the preset charge threshold, that is, the current power of the power battery cannot meet the heating demand, and the engine needs to be started to work, the second air conditioning control strategy can be determined according to the temperature difference in response to the state of charge being not greater than the preset charge threshold. The heater, mixing damper and engine of the hybrid vehicle are controlled in coordination through the second air conditioning control strategy to achieve heating. Among them, the second air conditioning control strategy is a control strategy for the relevant actuators of the automatic air conditioning heating when the state of charge is greater than the preset charge threshold.

[0070] Among them, the preset charge threshold can be determined according to the vehicle model and the vehicle control strategy. The embodiment of the present invention does not specifically limit the size of the preset charge threshold.

[0071] For example, the preset charge threshold may be 40%. If the charge state of the power battery is greater than 40%, it is determined that the charge state is greater than the preset charge threshold. If the charge state of the power battery is not greater than 40%, it is determined that the charge state is not greater than the preset charge threshold.

[0072] Step 105: executing the first air conditioning control strategy or the second air conditioning control strategy.

[0073] After determining the first air-conditioning control strategy or the second air-conditioning control strategy, the first air-conditioning control strategy or the second air-conditioning control strategy can be executed to coordinate at least two of the heater, the mixing damper and the engine to generate heat, which is then passed into the passenger compartment based on the automatic air-conditioning pipeline, thereby achieving heating of the passenger compartment.

[0074] The embodiment of the present invention determines the temperature difference between the air-conditioning outlet temperature and the target temperature when receiving a heating demand instruction, and then determines the coordination strategy of the heater, engine, and hybrid damper based on the temperature difference, that is, the first air-conditioning control strategy and the second air-conditioning control strategy. Through the first air-conditioning control strategy or the third air-conditioning control strategy, each actuator is controlled to perform corresponding actions, thereby realizing coordinated control, reducing the number of actuators that need to be independently controlled, and making the heating control process simpler when the automatic air-conditioning is heating. Moreover, by coordinating the control of the heater, engine, and hybrid damper, the engine can intervene in the heating process of the automatic air-conditioning at the right time. The automatic air-conditioning is controlled in combination with the charge state of the hybrid vehicle and the engine, so that the heat of the engine is fully utilized, reducing the time that the hybrid vehicle uses only the power of the power battery to power the heater, and reducing the energy consumption of the whole vehicle of the hybrid vehicle.

[0075] Reference Figure 2 , shows a flowchart of another embodiment of a hybrid vehicle automatic air conditioning control method of the present invention. The hybrid vehicle automatic air conditioning control method may specifically include the following steps:

[0076] Step 201, upon receiving a heating demand instruction, determining a temperature difference between an air conditioning outlet temperature and a target temperature corresponding to the heating demand instruction;

[0077] First, the present invention can be implemented as follows Figure 3The controller architecture shown in the figure. The engine periodically sends the current engine operating status, actual engine speed, engine coolant temperature, and actual engine main water pump speed to the VIU via the CAN bus. The ambient temperature sensor, the in-vehicle temperature sensor, the air duct temperature sensor, the sunlight sensor, the air duct temperature sensor, and the evaporation temperature sensor convert the current actual temperature into a voltage signal and transmit it to the VIU in real time. The VIU converts the voltage value collected by the current temperature sensor into the current actual temperature and sends it to the automatic air conditioning algorithm module. The mode damper, the mixing damper, the circulation damper, and the blower send the current actual voltage to the VIU in real time via a hard line. The VIU converts the current actual voltage into the actual position of the current actuator and inputs it into the automatic air conditioning algorithm module. When the vehicle is powered on, the user turns on the automatic air conditioning and enters the current set temperature, and the automatic air conditioning module algorithm is activated. The automatic air conditioning collects the temperature collected by the sensor in real time, and calculates the current final air outlet temperature based on the user's set temperature. Through the current target air outlet temperature, the engine speed, PTC power, the opening of the air conditioning mixing damper, mode damper, circulating damper, and the air volume of the blower are controlled. By adjusting the power and opening of the actuator, the user's temperature requirements for the passenger compartment are met.

[0078] When a heating demand instruction is received, the temperature difference between the acquired air conditioning outlet temperature and the target temperature corresponding to the heating demand instruction can be calculated.

[0079] Specifically, the step of determining the temperature difference between the air-conditioning outlet temperature and the target temperature corresponding to the heating demand instruction includes: obtaining the air-conditioning outlet temperature; calculating the first difference between the air-conditioning outlet temperature and the target temperature corresponding to the heating demand instruction; and determining the absolute value of the first difference as the temperature difference.

[0080] The air-conditioning outlet temperature can be obtained from the temperature sensor on the automatic air-conditioning. Then the first difference between the air-conditioning outlet temperature and the target temperature corresponding to the heating demand instruction is calculated. The first difference is the value obtained by subtracting the target temperature from the air-conditioning outlet temperature. Then the absolute value of the first difference is used as the temperature difference.

[0081] Step 202, detecting the state of charge of the power battery of the hybrid vehicle;

[0082] The state of charge of the power battery of the hybrid vehicle can be detected by the BMC (battery management system) on the vehicle, and it is determined whether the state of charge of the power battery of the hybrid vehicle is greater than a preset charge threshold.

[0083] Step 203, in response to the state of charge being greater than a preset charge threshold, determining whether the temperature difference is greater than a preset first temperature threshold;

[0084] When the state of charge is greater than the preset charge threshold, that is, the power battery has sufficient power, pure electric heating can be used. Then the size of the temperature difference is judged to determine different control strategies according to different situations. It can be judged whether the temperature difference is greater than the preset first temperature threshold. The preset first temperature threshold is used to characterize the size of the difference between the air conditioning outlet temperature and the target temperature when the state of charge is high. The size of the preset first temperature threshold can be set according to demand, and the embodiment of the present invention does not specifically limit this.

[0085] Step 204, in response to the temperature difference being greater than a preset first temperature threshold, determining that the first air conditioning control strategy is to increase the power of the heater and the mixing damper is in a full heat position;

[0086] When the temperature difference is greater than the preset first temperature threshold, that is, the gap between the air-conditioning outlet temperature and the target temperature is very large, and the automatic air-conditioning needs to be heated quickly, the power of the automatic air-conditioning heater can be increased in response to the temperature difference being greater than the preset first temperature threshold, and the mixing damper can be controlled to be in the full heat position as the first air-conditioning control strategy, so that the air-conditioning can be heated quickly.

[0087] Step 205, in response to the temperature difference being not greater than a preset first temperature threshold, obtaining the engine water temperature of the hybrid vehicle;

[0088] When the temperature difference is greater than the preset first temperature threshold, that is, the air conditioning outlet temperature is close to the target temperature, if the power of the heater continues to increase, there may be a waste of energy. Therefore, the engine water temperature of the hybrid vehicle can be obtained and introduced for vehicle control.

[0089] Step 206, determining a first air conditioning control strategy according to the engine water temperature and the temperature difference;

[0090] Then, a first air-conditioning control strategy for controlling the mixing door position and the heater is determined based on the engine water temperature and the temperature difference.

[0091] Specifically, the step of determining the first air conditioning control strategy based on the engine water temperature and the temperature difference includes: determining the damper position based on the engine water temperature and the temperature difference; determining that the first air conditioning control strategy is to maintain the power of the heater and the mixing damper at the damper position.

[0092] The air door position of the mixing air door can be determined by controlling the engine water temperature and the temperature difference. Maintaining the power of the heater and controlling the mixing air door to be at a determined air door position is the first control strategy.

[0093] Furthermore, the step of determining the throttle position based on the engine water temperature and the temperature difference includes: determining whether the engine water temperature is greater than the target temperature; in response to the engine water temperature being greater than the target temperature, determining that the throttle position is in a full hot position; in response to the engine water temperature being greater than the target temperature, using the temperature difference as a feedback value to perform closed-loop control to determine the throttle position.

[0094] It can be determined whether the engine water temperature is greater than the target temperature; to determine whether the damper position needs to be controlled at the full hot position. In response to the engine water temperature being greater than the target temperature, the damper position can be determined to be in the full hot position; in response to the engine water temperature being greater than the target temperature, the temperature difference is used as a feedback value for closed-loop control to determine the damper position. The closed-loop control includes but is not limited to PID (proportional-integral-differential) control, fuzzy control, etc.

[0095] Step 207, in response to the state of charge being not greater than the preset charge threshold, determining whether the temperature difference is greater than a preset second temperature threshold;

[0096] When the state of charge is not greater than the preset charge threshold, that is, the engine needs to intervene in the heating control of the automatic air conditioner, it can be determined whether the temperature difference is greater than the preset second temperature threshold. The preset second temperature threshold is used to characterize the difference between the air conditioner outlet temperature and the target temperature when the state of charge is low. The size of the preset second temperature threshold can be set according to demand, and the embodiment of the present invention does not specifically limit this.

[0097] Step 208, in response to the temperature difference being greater than a preset second temperature threshold, determining that the second air conditioning control strategy is to increase the power of the heater, start the engine and place the mixing damper in a full heat position;

[0098] When the temperature difference is greater than the preset second temperature threshold, it means that quick heating is currently needed. In response to the temperature difference being greater than the preset second temperature threshold, the power of the automatic air-conditioning heater can be increased, the engine can be started, and the mixing damper can be controlled to be in the full heat position, which is determined as the second air-conditioning control strategy. The heater, engine and mixing damper are controlled through the second air-conditioning control strategy to perform coordinated control for heating.

[0099] Step 209, in response to the temperature difference being not greater than a preset second temperature threshold, obtaining a current position of the mixing damper;

[0100] Step 210, determining a second air conditioning control strategy according to the current position and the temperature difference;

[0101] When the temperature difference is not greater than a preset second temperature threshold, the heater can be used for heating in a timely manner, and the heat of the engine can be used for heating to the maximum extent to reduce energy consumption. The current position of the mixing door is obtained, and a second air conditioning control strategy is determined based on the current position of the mixing door and the temperature difference to control the heater, the engine and the mixing door.

[0102] Specifically, the step of determining the second air-conditioning control strategy based on the current position and the temperature difference includes: determining the working state of the heater based on the current position; determining the damper position based on the temperature difference; and determining that the second air-conditioning control strategy is to start the engine, the heater is in the working state and the mixing damper is in the damper position.

[0103] It can be determined whether the heater needs to be started and the working state of the heater according to the current position of the damper. Then, the damper position that the mixing damper needs to reach is determined according to the temperature difference. The second air conditioning control strategy is determined as starting the engine, the heater is in the corresponding working state, and the mixing damper is in the corresponding damper position.

[0104] Further, the step of determining the working state of the heater based on the current position includes: judging whether the current position is a full-heat position; in response to the current position being the full-heat position, determining that the working state of the heater is work-enabled; in response to the current position not being the full-heat position, determining that the working state of the heater is work-off.

[0105] The working state of the heater can be determined by the current position of the mixing damper. When the current position of the mixing damper is in the full heat position, it means that the heat of the current engine is not enough to meet the heating requirements. In response to the current position being in the full heat position, the working state of the heater can be determined to be work enabled, so that the heater and the engine can work together for heating. When the current position of the mixing damper is not in the full heat position, it means that the heat of the current engine can meet the heating requirements and the heater is not needed for heating. In response to the current position not being in the full heat position, the working state of the heater can be determined to be work off, thereby turning off the heater and using only the engine for heating.

[0106] Furthermore, the step of determining the damper position based on the temperature difference includes: using the temperature difference as a feedback value to perform closed-loop control to determine the damper position.

[0107] For determining the damper position, the temperature difference feedback value may also be used for closed-loop control, and the closed-loop control also includes but is not limited to PID control, fuzzy control, and the like.

[0108] Step 211: execute the first air conditioning control strategy or the second air conditioning control strategy.

[0109] After determining the first air-conditioning control strategy or the second air-conditioning control strategy, the first air-conditioning control strategy or the second air-conditioning control strategy can be executed to coordinate at least two of the heater, the mixing damper and the engine to generate heat, which is then passed into the passenger compartment based on the automatic air-conditioning pipeline, thereby achieving heating of the passenger compartment.

[0110] In summary, in practical applications, the control of automatic air conditioning can include the following four example situations:

[0111] 1. When the vehicle SOC is higher than 40%, if the current air outlet temperature is much lower than the target temperature, the target opening of the current hybrid air door is calculated through the closed-loop algorithm of the target temperature and the actual temperature. Since the actual temperature is much lower than the target temperature, the opening of the hybrid air door is at the full hot position at this time, and the automatic air conditioner gradually increases the temperature of the passenger compartment by controlling the PTC power to meet the user's demand for heating.

[0112] 2. When the SOC of the vehicle is higher than 40%, if the current air outlet temperature is not much different from the target temperature, if the hybrid damper still uses the closed-loop control of the target temperature and the actual temperature, the opening of the hybrid damper will be in a non-full-heat position. Due to the winter air conditioning heating, in order to prevent the risk of fogging in the car, the circulating damper will use external circulation. If the hybrid damper is in a non-full-heat position, it will cause the outside cold air to be poured into the passenger compartment, causing the PTC to increase the output power to ensure the target air temperature, thereby significantly improving the energy consumption of the whole vehicle. Therefore, the hybrid damper algorithm increases the target air temperature and engine water temperature judgment. If the target air temperature is higher than the engine water temperature, the position of the hybrid damper must reach full heat. Since the SOC of the whole vehicle is very high at this time, the engine will not start. At this time, the engine water temperature is close to the ambient temperature. When heating, the target air temperature is greater than the ambient temperature. Finally, when the air outlet temperature is not much different from the target temperature, the hybrid damper position is guaranteed to be in full heat, ensuring that the user's requirements for the set temperature are met while reducing the energy consumption of the whole vehicle.

[0113] 3. When the vehicle SOC is not higher than 40%, the engine needs to be started to replenish the vehicle's power battery. If the actual wind temperature is much lower than the target wind temperature, the vehicle is in a rapid heating stage. At this time, the hybrid damper adopts a closed-loop algorithm, and the target opening is always maintained at a full heat state. The engine and PTC generate heat simultaneously to quickly meet the user's heating needs for the passenger compartment.

[0114] 4. When the vehicle SOC is not higher than 40%, there is a heating demand in the passenger compartment, the engine has been started, and the actual air temperature is slightly different from the target air temperature. At this time, the engine water temperature is gradually rising, and the PTC is still outputting power. Due to the use of closed-loop control, the mixing damper will also rotate to the middle position. At this time, all three use the target air temperature as the control target. Due to the temperature difference in the control process, the PTC is still started intermittently, and the opening of the mixing damper will fluctuate, causing the actual air outlet temperature to fluctuate greatly, affecting the user's actual vehicle experience and increasing the energy consumption of the entire vehicle. At this time, the opening of the mixing damper is used as the enabling condition of the PTC. If the mixing damper opening is in a non-full heat position, the engine water temperature is sufficient to provide the heating demand of the passenger compartment, and the PTC operation is stopped. If the mixing damper is in a full warm position, that is, the engine water temperature cannot meet the heating demand of the passenger compartment, then the PTC is requested to start. By controlling the opening of the hybrid air door through automatic air conditioning, the PTC is activated, reducing the number of target actuators involved in the control, thereby optimizing the control of the target air temperature in the hybrid state, avoiding frequent start and stop of PTC, meeting the user's demand for passenger compartment temperature and reducing the energy consumption of the entire vehicle.

[0115] The embodiment of the present invention determines the temperature difference between the air-conditioning outlet temperature and the target temperature when receiving a heating demand instruction, and then determines the coordination strategy of the heater, engine, and hybrid damper based on the temperature difference, that is, the first air-conditioning control strategy and the second air-conditioning control strategy. Through the first air-conditioning control strategy or the third air-conditioning control strategy, each actuator is controlled to perform corresponding actions, thereby realizing coordinated control, reducing the number of actuators that need to be independently controlled, and making the heating control process simpler when the automatic air-conditioning is heating. Moreover, by coordinating the control of the heater, engine, and hybrid damper, the engine can intervene in the heating process of the automatic air-conditioning at the right time. The automatic air-conditioning is controlled in combination with the charge state of the hybrid vehicle and the engine, so that the heat of the engine is fully utilized, reducing the time that the hybrid vehicle uses only the power of the power battery to power the heater, and reducing the energy consumption of the whole vehicle of the hybrid vehicle.

[0116] It should be noted that, for the sake of simplicity, the method embodiments are described as a series of action combinations, but those skilled in the art should be aware that the embodiments of the present invention are not limited by the order of the actions described, because according to the embodiments of the present invention, certain steps can be performed in other orders or simultaneously. Secondly, those skilled in the art should also be aware that the embodiments described in the specification are all preferred embodiments, and the actions involved are not necessarily required by the embodiments of the present invention.

[0117] Reference Figure 4 , shows a structural block diagram of an embodiment of an automatic air conditioning control device for a hybrid vehicle of the present invention, wherein the automatic air conditioning control device for a hybrid vehicle comprises:

[0118] The receiving module 401 is used to determine the temperature difference between the air conditioning outlet temperature and the target temperature corresponding to the heating demand instruction when receiving the heating demand instruction;

[0119] A first detection module 402 detects the state of charge of the power battery of the hybrid vehicle;

[0120] A first heating module 403, configured to determine a first air conditioning control strategy according to the temperature difference in response to the state of charge being greater than a preset charge threshold, wherein the first air conditioning control strategy is configured to control a heater and a mixing damper of the hybrid vehicle for heating;

[0121] A second heating module 404, configured to determine a second air conditioning control strategy according to the temperature difference in response to the state of charge being not greater than a preset charge threshold, wherein the second air conditioning control strategy is configured to control a heater, a mixing damper and an engine of the hybrid vehicle for heating;

[0122] The execution module 405 is used to execute the first air-conditioning control strategy or the second air-conditioning control strategy.

[0123] In an optional embodiment of the present invention, the first heating module 403 includes:

[0124] A first response submodule, configured to determine whether the temperature difference is greater than a preset first temperature threshold in response to the state of charge being greater than a preset charge threshold;

[0125] a second response submodule, configured to determine, in response to the temperature difference being greater than a preset first temperature threshold, that the first air conditioning control strategy is to increase the power of the heater and that the mixing damper is in a full heat position;

[0126] a third response submodule, configured to obtain the engine water temperature of the hybrid vehicle in response to the temperature difference being not greater than a preset first temperature threshold;

[0127] The first air conditioning control strategy determination submodule is used to determine the first air conditioning control strategy according to the engine water temperature and the temperature difference.

[0128] In an optional embodiment of the present invention, the first air conditioning control strategy determination submodule includes:

[0129] A first air door position determination unit, configured to determine the air door position based on the engine water temperature and the temperature difference;

[0130] The first air conditioning control strategy determining unit is configured to determine that the first air conditioning control strategy is to keep the power of the heater and the mixing damper at the damper position.

[0131] In an optional embodiment of the present invention, the damper position determining first unit comprises:

[0132] A judging subunit, used for judging whether the engine water temperature is greater than the target temperature;

[0133] a first response subunit, for determining that the damper position is in a full hot position in response to the engine water temperature being greater than the target temperature;

[0134] The second response subunit is used for responding to the engine water temperature being greater than the target temperature, using the temperature difference as a feedback value to perform closed-loop control and determine the air door position.

[0135] In an optional embodiment of the present invention, the second heating module 404 includes:

[0136] A fourth response submodule, configured to determine whether the temperature difference is greater than a preset second temperature threshold in response to the state of charge being not greater than a preset charge threshold;

[0137] a fifth response submodule, configured to determine, in response to the temperature difference being greater than a preset second temperature threshold, that the second air conditioning control strategy is to increase the power of the heater, start the engine and place the mixing damper in a full heat position;

[0138] a sixth response submodule, configured to obtain a current position of the mixing damper in response to the temperature difference being not greater than a preset second temperature threshold;

[0139] The second air conditioning control strategy determination submodule is used to determine the second air conditioning control strategy according to the current position and the temperature difference.

[0140] In an optional embodiment of the present invention, the second air conditioning control strategy determination submodule includes:

[0141] a heater working state determining unit, configured to determine the working state of the heater according to the current position;

[0142] a second damper position determination unit, configured to determine the damper position according to the temperature difference;

[0143] The second air conditioning control strategy determining unit is used to determine that the second air conditioning control strategy is to start the engine, the heater is in the working state, and the mixing damper is in the damper position.

[0144] In an optional embodiment of the present invention, the heater working state determination unit includes:

[0145] A judging subunit, used for judging whether the current position is a full heat position;

[0146] a third response subunit, configured to determine that the working state of the heater is enabled in response to the current position being the full-heat position;

[0147] The fourth response subunit is used to determine that the working state of the heater is working off in response to the current position not being the full-heat position.

[0148] As for the device embodiment, since it is basically similar to the method embodiment, the description is relatively simple, and the relevant parts can be referred to the partial description of the method embodiment.

[0149] Reference Figure 5 , an embodiment of the present invention further provides a vehicle, comprising:

[0150] A processor 501 and a storage medium 502, wherein the storage medium 502 stores a computer program executable by the processor 501, and when the vehicle is running, the processor 501 executes the computer program to perform the hybrid vehicle automatic air conditioning control method as described in any one of the embodiments of the present invention. The hybrid vehicle automatic air conditioning control method includes:

[0151] When receiving a heating demand instruction, determining a temperature difference between the air outlet temperature of the air conditioner and a target temperature corresponding to the heating demand instruction;

[0152] Detect the state of charge of the power battery of hybrid vehicles;

[0153] In response to the state of charge being greater than a preset charge threshold, determining a first air conditioning control strategy according to the temperature difference, the first air conditioning control strategy being used to control a heater and a mixing damper of the hybrid vehicle for heating;

[0154] In response to the state of charge being not greater than a preset charge threshold, determining a second air conditioning control strategy according to the temperature difference, the second air conditioning control strategy being used to control a heater, a mixing damper and an engine of the hybrid vehicle for heating;

[0155] Execute the first air-conditioning control strategy or the second air-conditioning control strategy.

[0156] Optionally, in response to the state of charge being greater than a preset charge threshold, the step of determining a first air conditioning control strategy according to the temperature difference includes:

[0157] In response to the state of charge being greater than a preset charge threshold, determining whether the temperature difference is greater than a preset first temperature threshold;

[0158] In response to the temperature difference being greater than a preset first temperature threshold, determining that the first air conditioning control strategy is to increase the power of the heater and the blend door is in a full heat position;

[0159] In response to the temperature difference being not greater than a preset first temperature threshold, obtaining an engine water temperature of the hybrid vehicle;

[0160] A first air conditioning control strategy is determined according to the engine water temperature and the temperature difference.

[0161] Optionally, the step of determining the first air conditioning control strategy according to the engine water temperature and the temperature difference includes:

[0162] determining a damper position based on the engine water temperature and the temperature difference;

[0163] The first air conditioning control strategy is determined to maintain the power of the heater and the blend door at the door position.

[0164] Optionally, the step of determining the air door position based on the engine water temperature and the temperature difference comprises:

[0165] determining whether the engine water temperature is greater than the target temperature;

[0166] In response to the engine water temperature being greater than the target temperature, determining that the damper position is in a full hot position;

[0167] In response to the engine water temperature being greater than the target temperature, the temperature difference is used as a feedback value to perform closed-loop control to determine the damper position.

[0168] Optionally, in response to the state of charge being not greater than a preset charge threshold, the step of determining a second air conditioning control strategy according to the temperature difference includes:

[0169] In response to the state of charge being not greater than a preset charge threshold, determining whether the temperature difference is greater than a preset second temperature threshold;

[0170] In response to the temperature difference being greater than a preset second temperature threshold, determining that the second air conditioning control strategy is to increase the power of the heater, start the engine and place the blend door in a full heat position;

[0171] In response to the temperature difference being not greater than a preset second temperature threshold, obtaining a current position of the mixing damper;

[0172] A second air conditioning control strategy is determined according to the current position and the temperature difference.

[0173] Optionally, the step of determining a second air conditioning control strategy according to the current position and the temperature difference includes:

[0174] determining a working state of the heater according to the current position;

[0175] determining the damper position according to the temperature difference;

[0176] The second air conditioning control strategy is determined as starting the engine, the heater being in the working state, and the mixing door being in the door position.

[0177] Optionally, the step of determining the working state of the heater according to the current position includes:

[0178] Determining whether the current position is a full heat position;

[0179] In response to the current position being the full-heat position, determining that the operating state of the heater is enabled for operation;

[0180] In response to the current position not being the full heat position, determining that the operating state of the heater is operating off.

[0181] Optionally, the step of determining the damper position according to the temperature difference comprises:

[0182] The temperature difference is used as a feedback value to perform closed-loop control to determine the damper position;

[0183] Optionally, the step of determining the temperature difference between the air conditioning outlet temperature and the target temperature corresponding to the heating demand instruction includes:

[0184] Get the air outlet temperature of the air conditioner;

[0185] Calculating a first difference between the air conditioning outlet temperature and the target temperature corresponding to the heating demand instruction;

[0186] The absolute value of the first difference is determined as the temperature difference.

[0187] The memory may include a random access memory (RAM) or a non-volatile memory, such as at least one disk memory. Optionally, the memory may also be at least one storage device located away from the processor.

[0188] The above-mentioned processor can be a general-purpose processor, including a central processing unit (CPU), a network processor (NP), etc.; it can also be a digital signal processor (DSP), an application specific integrated circuit (ASIC), a field programmable gate array (FPGA) or other programmable logic devices, discrete gate or transistor logic devices, discrete hardware components.

[0189] Reference Figure 6 The embodiment of the present invention further provides a computer-readable storage medium 601, on which a computer program is stored. When the computer program is executed by a processor, the hybrid vehicle automatic air conditioning control method as described in any one of the embodiments of the present invention is executed.

[0190] The hybrid vehicle automatic air conditioning control method comprises:

[0191] When receiving a heating demand instruction, determining a temperature difference between the air outlet temperature of the air conditioner and a target temperature corresponding to the heating demand instruction;

[0192] Detect the state of charge of the power battery of hybrid vehicles;

[0193] In response to the state of charge being greater than a preset charge threshold, determining a first air conditioning control strategy according to the temperature difference, the first air conditioning control strategy being used to control a heater and a mixing damper of the hybrid vehicle for heating;

[0194] In response to the state of charge being not greater than a preset charge threshold, determining a second air conditioning control strategy according to the temperature difference, the second air conditioning control strategy being used to control a heater, a mixing damper and an engine of the hybrid vehicle for heating;

[0195] Execute the first air-conditioning control strategy or the second air-conditioning control strategy.

[0196] Optionally, in response to the state of charge being greater than a preset charge threshold, the step of determining a first air conditioning control strategy according to the temperature difference includes:

[0197] In response to the state of charge being greater than a preset charge threshold, determining whether the temperature difference is greater than a preset first temperature threshold;

[0198] In response to the temperature difference being greater than a preset first temperature threshold, determining that the first air conditioning control strategy is to increase the power of the heater and the blend door is in a full heat position;

[0199] In response to the temperature difference being not greater than a preset first temperature threshold, obtaining an engine water temperature of the hybrid vehicle;

[0200] A first air conditioning control strategy is determined according to the engine water temperature and the temperature difference.

[0201] Optionally, the step of determining the first air conditioning control strategy according to the engine water temperature and the temperature difference includes:

[0202] determining a damper position based on the engine water temperature and the temperature difference;

[0203] The first air conditioning control strategy is determined to maintain the power of the heater and the blend door at the door position.

[0204] Optionally, the step of determining the air door position based on the engine water temperature and the temperature difference comprises:

[0205] determining whether the engine water temperature is greater than the target temperature;

[0206] In response to the engine water temperature being greater than the target temperature, determining that the damper position is in a full hot position;

[0207] In response to the engine water temperature being greater than the target temperature, the temperature difference is used as a feedback value to perform closed-loop control to determine the damper position.

[0208] Optionally, in response to the state of charge being not greater than a preset charge threshold, the step of determining a second air conditioning control strategy according to the temperature difference includes:

[0209] In response to the state of charge being not greater than a preset charge threshold, determining whether the temperature difference is greater than a preset second temperature threshold;

[0210] In response to the temperature difference being greater than a preset second temperature threshold, determining that the second air conditioning control strategy is to increase the power of the heater, start the engine and place the blend door in a full heat position;

[0211] In response to the temperature difference being not greater than a preset second temperature threshold, obtaining a current position of the mixing damper;

[0212] A second air conditioning control strategy is determined according to the current position and the temperature difference.

[0213] Optionally, the step of determining a second air conditioning control strategy according to the current position and the temperature difference includes:

[0214] determining a working state of the heater according to the current position;

[0215] determining the damper position according to the temperature difference;

[0216] The second air conditioning control strategy is determined as starting the engine, the heater being in the working state, and the mixing door being in the door position.

[0217] Optionally, the step of determining the working state of the heater according to the current position includes:

[0218] Determining whether the current position is a full heat position;

[0219] In response to the current position being the full-heat position, determining that the operating state of the heater is enabled for operation;

[0220] In response to the current position not being the full heat position, determining that the operating state of the heater is operating off.

[0221] Optionally, the step of determining the damper position according to the temperature difference comprises:

[0222] The temperature difference is used as a feedback value to perform closed-loop control to determine the damper position;

[0223] Optionally, the step of determining the temperature difference between the air conditioning outlet temperature and the target temperature corresponding to the heating demand instruction includes:

[0224] Get the air outlet temperature of the air conditioner;

[0225] Calculating a first difference between the air conditioning outlet temperature and the target temperature corresponding to the heating demand instruction;

[0226] The absolute value of the first difference is determined as the temperature difference.

[0227] The various embodiments in the specification are described in a progressive manner, and each embodiment focuses on the differences from other embodiments. The same or similar parts between the various embodiments can be referenced to each other.

[0228] It will be appreciated by those skilled in the art that the embodiments of the present invention may be provided as methods, devices, or computer program products. Therefore, the embodiments of the present invention may take the form of a complete hardware embodiment, a complete software embodiment, or an embodiment combining software and hardware. Moreover, the embodiments of the present invention may take the form of a computer program product implemented on one or more computer-usable storage media (including but not limited to disk storage, CD-ROM, optical storage, etc.) containing computer-usable program codes.

[0229] The embodiments of the present invention are described with reference to the flowcharts and / or block diagrams of the methods, terminal devices (systems), and computer program products according to the embodiments of the present invention. It should be understood that each process and / or block in the flowchart and / or block diagram, as well as the combination of the processes and / or blocks in the flowchart and / or block diagram, can be implemented by computer program instructions. These computer program instructions can be provided to a processor of a general-purpose computer, a special-purpose computer, an embedded processor, or other programmable data processing terminal device to generate a machine, so that the instructions executed by the processor of the computer or other programmable data processing terminal device generate instructions for implementing the processes in the flowchart and / or block diagram. Figure 1 A process or multiple processes and / or boxes Figure 1 A device that provides the functions specified in a block or multiple blocks.

[0230] These computer program instructions may also be stored in a computer-readable memory capable of directing a computer or other programmable data processing terminal device to operate in a specific manner, so that the instructions stored in the computer-readable memory produce a manufactured product including an instruction device, which implements the process Figure 1 A process or multiple processes and / or boxes Figure 1 A function specified in one or more boxes.

[0231] These computer program instructions can also be loaded onto a computer or other programmable data processing terminal device so that a series of operating steps are executed on the computer or other programmable terminal device to produce a computer-implemented process, thereby providing instructions for executing on the computer or other programmable terminal device to implement the process. Figure 1 A process or multiple processes and / or boxes Figure 1 The steps for the functions specified in one or more boxes.

[0232] The above embodiments are only preferred embodiments for fully illustrating the present invention, and the protection scope of the present invention is not limited thereto. Any equivalent substitution or change made by a person skilled in the art based on the present invention is within the protection scope of the present invention.

Claims

1. A hybrid vehicle automatic air conditioning control method, characterized in that: The method comprises: When receiving a heating demand instruction, determining a temperature difference between the air outlet temperature of the air conditioner and a target temperature corresponding to the heating demand instruction; Detect the state of charge of the power battery of hybrid vehicles; In response to the state of charge being greater than a preset charge threshold, determining a first air conditioning control strategy according to the temperature difference, the first air conditioning control strategy being used to control a heater and a mixing damper of the hybrid vehicle for heating; In response to the state of charge being not greater than a preset charge threshold, determining a second air conditioning control strategy according to the temperature difference, the second air conditioning control strategy being used to control a heater, a mixing damper and an engine of the hybrid vehicle for heating; Execute the first air-conditioning control strategy or the second air-conditioning control strategy.

2. The method according to claim 1, characterized in that In response to the state of charge being greater than a preset charge threshold, the step of determining a first air conditioning control strategy according to the temperature difference comprises: In response to the state of charge being greater than a preset charge threshold, determining whether the temperature difference is greater than a preset first temperature threshold; In response to the temperature difference being greater than a preset first temperature threshold, determining that the first air conditioning control strategy is to increase the power of the heater and the blend door is in a full heat position; In response to the temperature difference being not greater than a preset first temperature threshold, obtaining an engine water temperature of the hybrid vehicle; A first air conditioning control strategy is determined according to the engine water temperature and the temperature difference.

3. The method according to claim 2, characterized in that The step of determining the first air conditioning control strategy according to the engine water temperature and the temperature difference comprises: determining a damper position based on the engine water temperature and the temperature difference; The first air conditioning control strategy is determined to maintain the power of the heater and the blend door at the door position.

4. The method according to claim 3, characterized in that The step of determining the air door position based on the engine water temperature and the temperature difference comprises: determining whether the engine water temperature is greater than the target temperature; In response to the engine water temperature being greater than the target temperature, determining that the damper position is in a full hot position; In response to the engine water temperature being greater than the target temperature, the temperature difference is used as a feedback value to perform closed-loop control to determine the damper position.

5. The method according to claim 1, characterized in that: In response to the state of charge being not greater than a preset charge threshold, the step of determining a second air conditioning control strategy according to the temperature difference comprises: In response to the state of charge being not greater than a preset charge threshold, determining whether the temperature difference is greater than a preset second temperature threshold; In response to the temperature difference being greater than a preset second temperature threshold, determining that the second air conditioning control strategy is to increase the power of the heater, start the engine and place the blend door in a full heat position; In response to the temperature difference being not greater than a preset second temperature threshold, obtaining a current position of the mixing damper; A second air conditioning control strategy is determined according to the current position and the temperature difference.

6. The method according to claim 5, characterized in that The step of determining the second air conditioning control strategy according to the current position and the temperature difference comprises: determining a working state of the heater according to the current position; determining the damper position according to the temperature difference; The second air conditioning control strategy is determined as starting the engine, the heater being in the working state, and the mixing door being in the door position.

7. The method according to claim 6, characterized in that The step of determining the working state of the heater according to the current position comprises: Determining whether the current position is a full heat position; In response to the current position being the full-heat position, determining that the operating state of the heater is enabled for operation; In response to the current position not being the full heat position, determining that the operating state of the heater is operating off.

8. The method according to claim 5, characterized in that The step of determining the damper position according to the temperature difference comprises: The temperature difference is used as a feedback value to perform closed-loop control and determine the damper position.

9. The method according to claim 1, characterized in that: The step of determining the temperature difference between the air conditioning outlet temperature and the target temperature corresponding to the heating demand instruction comprises: Get the air outlet temperature of the air conditioner; Calculating a first difference between the air conditioning outlet temperature and the target temperature corresponding to the heating demand instruction; The absolute value of the first difference is determined as the temperature difference.

10. An automatic air conditioning control device for a hybrid vehicle, characterized in that: The device comprises: A receiving module, configured to determine, upon receiving a heating demand instruction, a temperature difference between an air conditioning outlet temperature and a target temperature corresponding to the heating demand instruction; A first detection module detects the state of charge of the power battery of the hybrid vehicle; a first heating module, configured to determine a first air conditioning control strategy according to the temperature difference in response to the state of charge being greater than a preset charge threshold, wherein the first air conditioning control strategy is configured to control a heater and a mixing damper of the hybrid vehicle for heating; a second heating module, configured to determine a second air conditioning control strategy according to the temperature difference in response to the state of charge being not greater than a preset charge threshold, wherein the second air conditioning control strategy is configured to control a heater, a mixing damper and an engine of the hybrid vehicle for heating; An execution module is used to execute the first air-conditioning control strategy or the second air-conditioning control strategy.

11. A vehicle, characterized in that: The invention comprises a processor, a memory and a computer program stored in the memory and capable of running on the processor, wherein when the computer program is executed by the processor, the steps of the hybrid vehicle automatic air conditioning control method as claimed in any one of claims 1 to 9 are implemented.

12. A computer-readable storage medium, characterized in that: The computer-readable storage medium stores a computer program, and when the computer program is executed by a processor, the steps of the hybrid vehicle automatic air conditioning control method according to any one of claims 1 to 9 are implemented.

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