CN116080351A - Vehicle control method, device, terminal and medium - Google Patents

Vehicle control method, device, terminal and medium Download PDF

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Publication number
CN116080351A
CN116080351A CN202310104913.7A CN202310104913A CN116080351A CN 116080351 A CN116080351 A CN 116080351A CN 202310104913 A CN202310104913 A CN 202310104913A CN 116080351 A CN116080351 A CN 116080351A
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China
Prior art keywords
valve
state
warm air
preset
water temperature
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CN202310104913.7A
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Chinese (zh)
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CN116080351B (en
Inventor
李钰怀
林承伯
董春艳
吴广权
何炎迎
李子清
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Guangzhou Automobile Group Co Ltd
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Guangzhou Automobile Group Co Ltd
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    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B60—VEHICLES IN GENERAL
    • B60H—ARRANGEMENTS OF HEATING, COOLING, VENTILATING OR OTHER AIR-TREATING DEVICES SPECIALLY ADAPTED FOR PASSENGER OR GOODS SPACES OF VEHICLES
    • B60H1/00—Heating, cooling or ventilating [HVAC] devices
    • B60H1/02—Heating, cooling or ventilating [HVAC] devices the heat being derived from the propulsion plant
    • B60H1/04—Heating, cooling or ventilating [HVAC] devices the heat being derived from the propulsion plant from cooling liquid of the plant
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B60—VEHICLES IN GENERAL
    • B60H—ARRANGEMENTS OF HEATING, COOLING, VENTILATING OR OTHER AIR-TREATING DEVICES SPECIALLY ADAPTED FOR PASSENGER OR GOODS SPACES OF VEHICLES
    • B60H1/00—Heating, cooling or ventilating [HVAC] devices
    • B60H1/00642—Control systems or circuits; Control members or indication devices for heating, cooling or ventilating devices
    • B60H1/00735—Control systems or circuits characterised by their input, i.e. by the detection, measurement or calculation of particular conditions, e.g. signal treatment, dynamic models
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B60—VEHICLES IN GENERAL
    • B60H—ARRANGEMENTS OF HEATING, COOLING, VENTILATING OR OTHER AIR-TREATING DEVICES SPECIALLY ADAPTED FOR PASSENGER OR GOODS SPACES OF VEHICLES
    • B60H1/00—Heating, cooling or ventilating [HVAC] devices
    • B60H1/00642—Control systems or circuits; Control members or indication devices for heating, cooling or ventilating devices
    • B60H1/00814—Control systems or circuits characterised by their output, for controlling particular components of the heating, cooling or ventilating installation
    • B60H1/00821—Control systems or circuits characterised by their output, for controlling particular components of the heating, cooling or ventilating installation the components being ventilating, air admitting or air distributing devices
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B60—VEHICLES IN GENERAL
    • B60K—ARRANGEMENT OR MOUNTING OF PROPULSION UNITS OR OF TRANSMISSIONS IN VEHICLES; ARRANGEMENT OR MOUNTING OF PLURAL DIVERSE PRIME-MOVERS IN VEHICLES; AUXILIARY DRIVES FOR VEHICLES; INSTRUMENTATION OR DASHBOARDS FOR VEHICLES; ARRANGEMENTS IN CONNECTION WITH COOLING, AIR INTAKE, GAS EXHAUST OR FUEL SUPPLY OF PROPULSION UNITS IN VEHICLES
    • B60K11/00—Arrangement in connection with cooling of propulsion units
    • B60K11/02—Arrangement in connection with cooling of propulsion units with liquid cooling

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  • Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • Physics & Mathematics (AREA)
  • Thermal Sciences (AREA)
  • Chemical & Material Sciences (AREA)
  • Combustion & Propulsion (AREA)
  • Transportation (AREA)
  • Air-Conditioning For Vehicles (AREA)

Abstract

The application belongs to the technical field of vehicle control, and particularly relates to a vehicle control method, a device, a terminal and a medium. The vehicle control method includes: monitoring the working state and the air door position state of an air conditioner of a passenger cabin, wherein the air door position state is used for representing the warm air flow and the cold air flow of corresponding proportions when an air door of the air conditioner is at different positions; if the working state of the air conditioner is monitored to be an operation state, determining a valve target position according to the position state of the air door; and controlling a valve arranged on a warm air branch of the engine cooling system to move to the target position of the valve, wherein the valve is used for adjusting the flow of the warm air branch. Therefore, the valve position of the warm air branch of the engine cooling system is adjusted according to the working state of the air conditioner of the passenger cabin and the position state of the air door, so that the valve control of the warm air branch can meet the requirements of various working conditions, and the user experience is improved.

Description

Vehicle control method, device, terminal and medium
Technical Field
The present invention relates to the field of vehicle control technologies, and in particular, to a vehicle control method, device, terminal, and medium.
Background
The cooling system that automobile engine used on the market all adopts the structural design who provides flow for the warm braw branch road that the warm braw core is located to when cold district air conditioning heats, warm braw branch road provides heat for passenger cabin. The warm air branch is generally of a normally open design, namely, when an air conditioner needs to heat, a blower is turned on to blow air, and heat generated by a warm air core arranged on the warm air branch is blown to a passenger cabin; when the air conditioner does not need to heat, the air blower is turned off, and the warm air core body exchanges heat with the surrounding air by itself.
However, the normally open design of the warm air branch cannot be adapted to the requirements of various refrigeration or heating conditions, such as the influence of warm air on the refrigeration effect when the refrigeration requirement is high in a high-temperature environment; on the basis, some manufacturers set a wax-bag thermostat or an electric switch valve for the warm air branch, but still cannot consider various engine working conditions well.
Therefore, how to perfect the warm air branch of the engine cooling system of the automobile so as to meet the requirements of different vehicle working conditions is a difficult problem to be solved in the technical field of vehicle control at present.
Disclosure of Invention
The invention mainly aims to provide a vehicle control method, a device, a terminal and a medium, which aim to adjust the valve position of a warm air branch of an engine cooling system according to the working state and the air door position state of an air conditioner of a passenger cabin, so that the valve control of the warm air branch can meet the requirements of various working conditions.
According to an aspect of an embodiment of the present application, a vehicle control method is disclosed, including:
monitoring the working state and the air door position state of an air conditioner of a passenger cabin, wherein the air door position state is used for representing the warm air flow and the cold air flow of corresponding proportions when an air door of the air conditioner is at different positions;
if the working state of the air conditioner is monitored to be an operation state, determining a valve target position according to the position state of the air door;
and controlling a valve arranged on a warm air branch of the engine cooling system to move to the target position of the valve, wherein the valve is used for adjusting the flow of the warm air branch.
In some embodiments of the present application, based on the above technical solutions, the damper includes a primary damper and a secondary damper, and determining the target position of the valve according to the damper position state includes:
and calculating the valve opening of the warm air branch according to the air door position states corresponding to the main driving air door and the auxiliary driving air door respectively, and determining a valve target position corresponding to the valve opening.
In some embodiments of the present application, based on the above technical solutions, determining the valve target position according to the damper position state includes:
If the air door is at the first position, the air conditioner outputs cold air flow with the output larger than a first preset proportion, and the target position of the valve is determined to be a preset cut-off position, wherein the preset cut-off position is used for cutting off the flow of the warm air branch; or alternatively, the process may be performed,
if the air door is at the second position, the second position is different from the first position, the air conditioner output is larger than the warm air flow of a second preset proportion, the target position of the valve is determined to be a preset normally open position, and the preset normally open position is used for enabling the flow of the warm air branch to be maximum.
In some embodiments of the present application, based on the above technical solutions, the vehicle control method further includes:
controlling the valve of the warm air branch to move to the preset cut-off position and the preset normally open position respectively;
if the valve of the warm air branch cannot move to the preset cut-off position within the preset time, generating fault information for caching, and sending the fault information when the valve of the warm air branch is controlled to move to the preset cut-off position next time; or alternatively, the process may be performed,
if the valve of the warm air branch cannot move to the preset normally open position within the preset time, generating fault information for caching, and sending the fault information when the valve of the warm air branch is controlled to move to the preset normally open position next time.
In some embodiments of the present application, based on the above technical solutions, after determining the valve target position according to the damper position state, the vehicle control method further includes:
judging whether the target position of the valve is in an available state according to the water temperature of an engine cooling system;
if the water temperature of the engine cooling system is smaller than a first water temperature threshold value, determining that the target position of the valve is in an unavailable state;
and controlling the valve of the warm air branch to move to the preset cut-off position.
In some embodiments of the present application, based on the above technical solution, after determining whether the valve target position is in the usable state according to the water temperature of the engine cooling system, the vehicle control method further includes:
when the water temperature of the engine cooling system is larger than or equal to the first water temperature threshold value and smaller than a second water temperature threshold value, acquiring the real-time rotating speed and the real-time torque of the engine, wherein the first water temperature threshold value is smaller than the second water temperature threshold value;
if the real-time rotating speed of the engine reaches a safe rotating speed state and/or the real-time torque of the engine reaches a safe torque state, determining that the target position of the valve is in an unavailable state;
And controlling the valve of the warm air branch to move to a safety valve position, and when the valve of the warm air branch is positioned at the safety valve position, the cooling efficiency of the engine cooling system is highest.
In some embodiments of the present application, based on the above technical solutions, the vehicle control method further includes:
when the real-time rotating speed of the engine is larger than a preset rotating speed threshold value in a preset rotating speed time, determining that the real-time rotating speed of the engine reaches the safe rotating speed state; the method comprises the steps of,
and when the real-time torque of the engine is larger than a preset torque threshold value in a preset torque time, determining that the real-time torque of the engine reaches the safe torque state.
In some embodiments of the present application, based on the above technical solution, after determining whether the valve target position is in the usable state according to the water temperature of the engine cooling system, the vehicle control method further includes:
when the water temperature of the engine cooling system is greater than or equal to the second water temperature threshold and is smaller than a third water temperature threshold, the second water temperature threshold is smaller than the third water temperature threshold, and the target position of the valve is determined to be in an unavailable state;
calculating a preset valve position according to the second water temperature threshold, the third water temperature threshold and the safety valve position;
And controlling the valve of the warm air branch to move to the preset valve position.
In some embodiments of the present application, based on the above technical solution, after determining whether the valve target position is in the usable state according to the water temperature of the engine cooling system, the vehicle control method further includes:
when the water temperature of the engine cooling system is greater than or equal to the third water temperature threshold value, determining that the target valve position is in an unavailable state;
and controlling the valve of the warm air branch to move to the position of the safety valve.
According to an aspect of an embodiment of the present application, a vehicle is disclosed, comprising:
the air conditioner is used for outputting warm air flow and cold air flow in corresponding proportions;
the valve is arranged on a warm air branch of the engine cooling system and is used for adjusting the flow of the warm air branch;
the controller is used for monitoring the working state and the air door position state of the air conditioner of the passenger cabin, and the air door position state is used for representing the air door of the air conditioner to output warm air flow and cold air flow in corresponding proportion when the air door is at different positions; if the working state of the air conditioner is monitored to be an operation state, determining a valve target position according to the position state of the air door; and controlling a valve arranged on a warm air branch of the engine cooling system to move to the target position of the valve.
According to an aspect of embodiments of the present application, there is provided a computer program product or computer program comprising computer instructions stored in a computer readable storage medium. The processor of the computer device reads the computer instructions from the computer-readable storage medium, and the processor executes the computer instructions so that the computer device executes the vehicle control method as in the above technical solution.
According to the vehicle control method, the working state of the air conditioner in the passenger cabin and the position state of the air door are monitored to determine whether a user starts the air conditioner or not and whether a corresponding refrigeration requirement or a corresponding heating requirement exists or not, so that a corresponding valve target position is determined; and then controlling the valve of the warm air branch to move to the target position of the valve so as to adjust the flow of the warm air branch, thereby ensuring that the valve control of the warm air branch can meet the current working condition requirement of the vehicle.
Therefore, according to the vehicle control method, the valve position of the warm air branch of the engine cooling system is adjusted according to the working state of the air conditioner of the passenger cabin and the position state of the air door, so that the valve control of the warm air branch can meet various working condition demands, the current situation that the wax-coated thermostat or the electric switch valve based on the warm air branch in the prior art cannot realize control strategies corresponding to different working condition demands is improved, and user experience is improved.
It is to be understood that both the foregoing general description and the following detailed description are exemplary and explanatory only and are not restrictive of the application.
Drawings
The accompanying drawings, which are incorporated in and constitute a part of this specification, illustrate embodiments consistent with the application and together with the description, serve to explain the principles of the application. It is apparent that the drawings in the following description are only some embodiments of the present application, and that other drawings may be obtained from these drawings without inventive effort for a person of ordinary skill in the art.
FIG. 1 illustrates a schematic diagram of an engine cooling system in one embodiment of the present application.
FIG. 2 illustrates a flow chart of steps of a vehicle control method in one embodiment of the present application.
Fig. 3 shows an application flowchart of the vehicle control method in one embodiment of the present application.
Fig. 4 schematically shows a block diagram of a vehicle control apparatus provided in an embodiment of the present application.
Fig. 5 schematically illustrates a block diagram of a computer system suitable for use in implementing embodiments of the present application.
Detailed Description
Example embodiments will now be described more fully with reference to the accompanying drawings. However, the exemplary embodiments may be embodied in many forms and should not be construed as limited to the examples set forth herein; rather, these embodiments are provided so that this disclosure will be thorough and complete, and will fully convey the concept of the example embodiments to those skilled in the art.
Furthermore, the described features, structures, or characteristics may be combined in any suitable manner in one or more embodiments. In the following description, numerous specific details are provided to give a thorough understanding of embodiments of the present application. One skilled in the relevant art will recognize, however, that the aspects of the application can be practiced without one or more of the specific details, or with other methods, components, devices, steps, etc. In other instances, well-known methods, devices, implementations, or operations are not shown or described in detail to avoid obscuring aspects of the application.
The block diagrams depicted in the figures are merely functional entities and do not necessarily correspond to physically separate entities. That is, the functional entities may be implemented in software, or in one or more hardware modules or integrated circuits, or in different networks and/or processor devices and/or microcontroller devices.
The flow diagrams depicted in the figures are exemplary only, and do not necessarily include all of the elements and operations/steps, nor must they be performed in the order described. For example, some operations/steps may be decomposed, and some operations/steps may be combined or partially combined, so that the order of actual execution may be changed according to actual situations.
In the conventional fuel-oil vehicle and hybrid vehicle configurations, in order to maximize the utilization of the waste heat, the warm air heat source of the air conditioner is often from the engine, so that a warm air branch is arranged in the engine cooling system to lead to the warm air core, the heat of the engine is brought to the warm air core through the flow of the cooling liquid in the engine cooling system, and then the air conditioner blows the heat of the warm air core to the passenger cabin through the blower to achieve the heating effect.
On the basis, in order to reduce emission and avoid engine oil dilution, a plurality of manufacturers tend to add a temperature regulator with a wax-wrapped structure on a warm air branch (a warm air valve position), cut off a heat source in the heat engine stage of an engine, preferentially leave heat in the engine body, open the branch through the physical characteristics of the wax-wrapped when the cooling liquid is heated to 50-70 ℃ and infuse the heat to a warm air core. When the warm air branch is cut off through integrated electric control parts such as a temperature control module, the warm air branch is generally only cut off under the cold state, and the warm air branch is normally opened and cannot be closed again due to interaction of ball valves after the warm air branch is in the hot state. When the system needs warm air, the air blower and the heating air door are opened, and when the system does not need heating, the air blower and the heating air door are closed.
According to the temperature regulator control method of the warm air branch, the 'refrigerating' requirement of the system is practically ignored, under the refrigerating scene, although the blower and the warm air branch are in the closed state, the warm air core still has long heat, part of heat still spontaneously enters the passenger cabin through the natural heat exchange process of the environment, and due to the close distribution of air conditioning pipelines, the distances of various pipelines are relatively close, and the heat exchange effect of the refrigerant is also affected by the warm air core through the convection and radiation effects. The 'heat flow' exists in the refrigeration scene, the maximum refrigeration performance of the vehicle is limited, and the 'insufficient refrigeration' problem easily occurs in the vehicle for certain areas with high heat environments, so that the user experience is affected.
The valve position of a warm air branch of an engine cooling system is adjusted according to the working state and the air door position state of an air conditioner of a passenger cabin, so that valve control of the warm air branch can meet various working condition demands.
The following describes in detail the technical schemes such as the vehicle control method, the device, the terminal and the medium provided in the application with reference to the specific embodiments.
FIG. 1 shows a schematic diagram of an engine cooling system configured to implement the vehicle control method provided herein, in one embodiment of the present application. As shown in fig. 1, the valve of the warm air branch, i.e. the warm air valve of fig. 1, is controlled by a temperature control module; through controlling this warm braw valve, can adjust the coolant liquid flow of the warm braw branch road that the warm braw core is located to the convection current, after the coolant liquid flow of warm braw branch road changed, the coolant liquid flow of the branch road that the radiator is located also can change thereupon.
Fig. 2 shows a step flowchart of a vehicle control method in one embodiment of the present application, which may mainly include steps S100 to S300 as follows, as shown in fig. 2.
Step S100, monitoring the working state and the air door position state of an air conditioner of a passenger cabin, wherein the air door position state is used for representing that the air door of the air conditioner outputs warm air flow and cold air flow in corresponding proportion when in different positions.
Step 200, if the working state of the air conditioner is monitored to be an operation state, determining a valve target position according to the position state of the air door.
And step S300, controlling a valve arranged on a warm air branch of the engine cooling system to move to the valve target position, wherein the valve is used for adjusting the flow of the warm air branch.
According to the vehicle control method, the working state of the air conditioner in the passenger cabin and the position state of the air door are monitored to determine whether a user starts the air conditioner or not and whether a corresponding refrigeration requirement or a corresponding heating requirement exists or not, so that a corresponding valve target position is determined; and then controlling the valve of the warm air branch to move to the target position of the valve so as to adjust the flow of the warm air branch, thereby ensuring that the valve control of the warm air branch can meet the current working condition requirement of the vehicle.
Therefore, according to the vehicle control method, the valve position of the warm air branch of the engine cooling system is adjusted according to the working state of the air conditioner of the passenger cabin and the position state of the air door, so that the valve control of the warm air branch can meet various working condition demands, the current situation that the wax-coated thermostat or the electric switch valve based on the warm air branch in the prior art cannot realize control strategies corresponding to different working condition demands is improved, and user experience is improved.
The following describes each method step in the vehicle control method in detail.
Step S100, monitoring the working state and the air door position state of an air conditioner of a passenger cabin, wherein the air door position state is used for representing that the air door of the air conditioner outputs warm air flow and cold air flow in corresponding proportion when in different positions.
Specifically, by monitoring whether the air conditioner of the passenger compartment is in an operating state, it can be determined whether a user currently in the passenger compartment has a need for cooling or heating. Meanwhile, because the air door of the air conditioner is used for separating the area of the area where the air conditioner outputs cold air and hot air respectively, when the air door is positioned at different positions, the corresponding proportion of the cold air output by the air conditioner and the hot air output by the air conditioner respectively can be correspondingly changed.
For example, when the passenger cabin air conditioner is on, the user is instructed to have air conditioning requirements; when the air conditioner operates, the air door of the air conditioner is used for regulating the proportion of cold air to hot air, the air door state represents full hot air when 0 percent, the air door state represents full cold air when 100 percent, and when the air door is positioned at different positions, the temperature of air conditioner air entering the passenger cabin is regulated by the hot air and the cold air with the output proportion, and the size of the air conditioner air is controlled by the air blower. If the throttle state is 30%, the heating requirement of the user is stronger at the moment; if the throttle state is 100%, the user has no heating requirement at all.
Step 200, if the working state of the air conditioner is monitored to be an operation state, determining a valve target position according to the position state of the air door.
Specifically, when the air conditioner is in an operation state, a user in the passenger cabin is required to change the environmental temperature in the passenger cabin through the operation of the air conditioner, namely, the user has a refrigerating or heating requirement, and then the user determines that the refrigerating requirement is stronger or the heating requirement is stronger at the moment according to the position of the air door, so as to determine the valve target position corresponding to a valve arranged in a warm air branch of the engine cooling system.
And step S300, controlling a valve arranged on a warm air branch of the engine cooling system to move to the valve target position, wherein the valve is used for adjusting the flow of the warm air branch.
After the valve target position is determined, the valve of the warm air branch is controlled to move to the valve target position so as to change the flow rate of the cooling fluid of the engine cooling system to the warm air branch, and the valve target position is determined according to the position state of the air door of the air conditioner, so that the cooling fluid flow rate of the warm air branch can be ensured to be suitable for the refrigerating requirement or the heating requirement of the passenger cabin.
Further, on the basis of the above embodiment, the damper includes a primary damper and a secondary damper, and the determining the valve target position according to the damper position state in the step S200 includes the following step S201.
Step S201, calculating to obtain a valve opening of the warm air branch according to the air door position states corresponding to the primary air door and the secondary air door respectively, and determining a valve target position corresponding to the valve opening.
Specifically, for the air conditioner of the passenger cabin, the main driving air door corresponds to the air conditioner air outlet of the main driving seat, the auxiliary driving air door corresponds to the air conditioner air outlet of the auxiliary driving seat, the air conditioner requirements corresponding to the main driving seat and the auxiliary driving seat can be determined according to the air door positions of the main driving air door and the auxiliary driving air door, and then the integral air conditioner requirements of the passenger cabin can be calculated according to the positions of the main driving air door and the auxiliary driving air door, so that the valve target position is determined according to the integral air conditioner requirements of the passenger cabin.
For example, when the passenger compartment air conditioner is on, the air conditioning requirement is indicated; when the main driving air door and the auxiliary driving air door are both in the middle positions, namely the air door states are both not 0% and not 100%, the distribution condition of the warm air branch cooling liquid flow is calculated based on the air door positions, and the following formula exists:
taking trg_pos_1= (pos_mainset_airdio+pos_secdseat_airdio)/2
Wherein trg_pos_1 is the valve target position, pos_mainseal_air is the primary air door position, and pos_secdseat_air is the secondary air door position.
Further, on the basis of the above embodiment, the determining the valve target position according to the damper position state in the above step S200 includes the following steps S202 and S203.
Step S202, if the air door is at the first position, the air conditioner outputs cold air flow with a ratio larger than a first preset ratio, and the target position of the valve is determined to be a preset cut-off position, and the preset cut-off position is used for cutting off the flow of the warm air branch.
Specifically, when the air door of the air conditioner is positioned so that the cold air flow output by the air outlet of the air conditioner is larger than a first preset proportion, it is determined that a user has no heating requirement at the moment, a preset cut-off position is determined to be a valve target position, and the warm air branch is completely cut off by moving a valve arranged on the warm air branch to the preset cut-off position, so that the cooling liquid flow of the warm air branch is 0.
As a possible embodiment, for example, if the damper state of the air conditioner reaches 90% or more, the preset cutoff position is determined as the valve target position. It will be appreciated that the first preset ratio may be set according to actual requirements, and is not specifically limited herein.
As a possible embodiment, for example, if either the primary or secondary damper is 100%, that is, if the primary or secondary damper is on the fully cold side, the preset cutoff position is determined as the valve target position.
Step S203, if the damper is at the second position, the second position is different from the first position, the air conditioner output is greater than the warm air flow of the second preset proportion, it is determined that the target position of the valve is a preset normally open position, and the preset normally open position is used for maximizing the flow of the warm air branch.
Specifically, when the position of the air door of the air conditioner is such that the flow of hot air output by the air outlet of the air conditioner is greater than a second preset proportion, it is determined that the user has no refrigeration requirement at the moment, the preset normally open position is determined as the target position of the valve, and the valve arranged on the warm air branch is moved to the preset normally open position, so that the warm air branch is completely opened, and the flow of cooling liquid of the warm air branch is maximized.
As a possible example, if the damper state of the air conditioner reaches 10% or less, for example, the preset normally open position is determined as the valve target position. It will be appreciated that the second preset ratio may be set according to actual requirements, and is not specifically limited herein.
As a possible embodiment, for example, if either the primary or secondary damper is in a state of 0%, that is, if the primary or secondary damper is on the full hot side, the preset normally open position is determined as the valve target position.
Further, on the basis of the above embodiment, the vehicle control method further includes steps S401 to S403 as follows.
Step S401, controlling the valve of the warm air branch to move to the preset cut-off position and the preset normally open position respectively.
Step S402, if the valve of the warm air branch fails to move to the preset cut-off position within the preset time, generating fault information for buffering, and sending out the fault information when the valve of the warm air branch is controlled to move to the preset cut-off position next time.
Step S403, if the valve of the warm air branch fails to move to the preset normally open position within the preset time, generating fault information for buffering, and sending the fault information when the valve of the warm air branch is controlled to move to the preset normally open position next time.
Specifically, after the whole vehicle is electrified, a valve of a warm air branch is controlled to perform self-learning, and whether the stroke of the upper dead center and the lower dead center is normal is judged. The self-learning process is to control the valve of the warm air branch to move to the preset cut-off position and the preset normally open position in sequence respectively, if the valve of the warm air branch fails to finish the moving operation to the preset cut-off position within the preset time, generating fault information for caching, and displaying the fault information when the next requirement of moving to the preset cut-off position exists; similarly, if the valve controlling the warm air branch cannot finish the moving operation to the preset normally open position within the preset time, generating fault information for caching, and displaying the fault information when the next requirement of moving to the preset normally open position exists.
Therefore, the embodiment performs self-learning by controlling the valve of the warm air branch, timely detects whether the moving operation of the valve of the warm air branch is normal, and only displays corresponding fault information to remind a user when the valve cannot move to the preset position but the requirement of moving to the preset position exists, namely, the frequency of reporting the fault information is reduced to avoid unnecessary panic of the user.
Further, in a possible embodiment, after determining the valve target position according to the damper position state in the above step S200, the vehicle control method further includes the following steps S501 to S503.
Step S501, determining whether the valve target position is in an available state according to the water temperature of the engine cooling system.
Step S502, determining that the target valve position is in an unavailable state if the water temperature of the engine cooling system is less than a first water temperature threshold.
Step S503, controlling the valve of the warm air branch to move to the preset cut-off position.
Specifically, since the valve of the warm air branch is used for adjusting the flow of the cooling liquid of the warm air branch, the heat engine or cooling of the engine can be affected, after the valve target position corresponding to the valve of the warm air branch is determined according to the air conditioning requirement of a user, whether the valve target position is available or not needs to be judged according to the water temperature of the engine cooling system, so that the valve target position is ensured to be suitable for the current engine working condition.
In this embodiment, when the water temperature of the engine cooling system is low, that is, the engine is in a heat engine state, in order to avoid heat leakage and achieve the purpose of rapid heat engine, the valve of the warm air branch is controlled to move to a preset cut-off position, so that the flow of the cooling liquid of the warm air branch is 0, and thereby the rapid heat engine is realized.
In one possible embodiment, the first water temperature threshold is selected to be 60 degrees.
It will be appreciated that the first water temperature threshold may be set according to actual requirements, and is not specifically limited herein.
Further, on the basis of the above embodiment, after determining whether the valve target position is in the usable state according to the water temperature of the engine cooling system in step S501 described above, the vehicle control method further includes steps S504 to S506 as follows.
And step S504, when the water temperature of the engine cooling system is greater than or equal to the first water temperature threshold value and is smaller than a second water temperature threshold value, acquiring the real-time rotating speed and the real-time torque of the engine, wherein the first water temperature threshold value is smaller than the second water temperature threshold value.
In step S505, if the real-time rotational speed of the engine reaches the safe rotational speed state and/or the real-time torque of the engine reaches the safe torque state, the target position of the valve is determined to be in an unavailable state.
And step S506, controlling the valve of the warm air branch to move to a safety valve position, and when the valve of the warm air branch is positioned at the safety valve position, the cooling efficiency of the engine cooling system is highest.
Specifically, when the engine has passed through the heat engine stage, that is, the water temperature is greater than or equal to the first water temperature threshold and less than the second water temperature threshold, it is necessary to determine whether the engine is in a high load state according to the rotation speed and the output torque of the engine at this time, if the real-time rotation speed of the engine is higher and reaches the safe rotation speed state, or if the real-time rotation speed of the engine is higher and reaches the safe torque state, it is indicated that the engine is in the high load state, and the cooling problem of the engine needs to be considered preferentially, so that the valve target position determined previously according to the air conditioning requirement of the passenger compartment is not available, and at this time, the valve of the warm air branch is controlled to be moved to the safe valve position, so that the cooling efficiency of the engine cooling system is the highest, and the better engine cooling effect is ensured preferentially.
In one possible embodiment, the second water temperature threshold is selected to be 105 degrees.
It will be appreciated that the second water temperature threshold may be set according to actual requirements, and is not specifically limited herein.
In practical application, because of the difference between the structure and the operation mode of each vehicle type, the positions of the safety valves corresponding to each vehicle type are different, and the positions of the safety valves may be preset normally open positions or preset cut-off positions, namely, the conditions exist: when the valve of the warm air branch of the vehicle type A is at a preset normally open position, the cooling efficiency of the engine cooling system is highest, and when the valve of the warm air branch of the vehicle type B is at a preset cut-off position, the cooling efficiency of the engine cooling system is highest. Therefore, the present embodiment is not particularly limited herein as to the specific position of the safety valve position.
Further, on the basis of the above embodiment, the vehicle control method further includes step S507 and step S508 as follows.
Step S507, when the real-time rotation speed of the engine is greater than a preset rotation speed threshold value within a preset rotation speed time, determining that the real-time rotation speed of the engine reaches the safe rotation speed state.
Specifically, for example, when the real-time rotational speed of the engine is continuously equal to or higher than the preset rotational speed threshold 3500r/min within the preset rotational speed time of 5 seconds, it is determined that the real-time rotational speed of the engine reaches the safe rotational speed state.
As a possible embodiment, when the real-time rotation speed of the engine is in the safe rotation speed state, if the real-time rotation speed of the engine is within 3 seconds of the preset rotation speed time and is continuously smaller than the preset rotation speed threshold 3500r/min, the real-time rotation speed of the engine in the safe rotation speed state is switched to the normal rotation speed state. That is, when the real-time rotational speed of the engine decreases below a certain rotational speed value, the engine is not determined to be in a high-load state based on the rotational speed factor.
It will be appreciated that the above-mentioned preset rotational speed time and preset rotational speed threshold may be set according to actual requirements, which are not specifically limited herein.
And step S508, when the real-time torque of the engine is larger than a preset torque threshold value in a preset torque time, determining that the real-time torque of the engine reaches the safe torque state.
Specifically, for example, when the real-time torque of the engine is continuously equal to or higher than the preset torque threshold value 150n·m for the preset torque time 5 seconds, it is determined that the real-time torque of the engine reaches the safe torque state.
As a possible embodiment, when the real-time torque of the engine is in the safe torque state, if the real-time torque of the engine is within 3 seconds of the preset torque time and is continuously smaller than the preset torque threshold value 150n·m, the real-time torque of the engine in the safe torque state is switched to the normal torque state. That is, when the real-time torque of the engine falls below a specific torque value, the engine is not determined to be in a high load state based on the torque factor.
It will be appreciated that the preset torque time and the preset torque threshold may be set according to actual requirements, and are not specifically limited herein.
Further, on the basis of the above embodiment, after determining whether the valve target position is in the usable state according to the water temperature of the engine cooling system in step S501 described above, the vehicle control method further includes steps S509 to S511 as follows.
Step S509, when the water temperature of the engine cooling system is greater than or equal to the second water temperature threshold and less than a third water temperature threshold, the second water temperature threshold is less than the third water temperature threshold, and it is determined that the valve target position is in an unavailable state.
Step S510, calculating a preset valve position according to the second water temperature threshold, the third water temperature threshold and the safety valve position.
In step S511, the valve of the warm air branch is controlled to move to the preset valve position.
Specifically, when the water temperature of the engine is greater than or equal to the second water temperature threshold, the engine is in an overheated state, the heat dissipation and cooling problems of the engine need to be considered preferentially, a certain adjusting space is still reserved, and interpolation calculation can be performed with the position of the safety valve according to the current position of the valve of the warm air branch, so that the preset valve position is obtained. The valve of the warm air branch is controlled to move to the preset valve position, so that the cooling purpose of the engine and the air conditioning requirement of the passenger cabin are simultaneously considered.
As a possible embodiment, the preset valve position is obtained by interpolation calculation, and the following formula exists: trg_pos_2=trg_safe- [ (tres_3-Tclt)/(tres_3-tres_2) ] ×100% > (trg_safe-trg_pos_2)
Wherein, trg_pos_2 is the preset valve position, trg_safe is the safety valve position, tres_3 is the third water temperature threshold, tclt is the engine water temperature, and Tres_2 is the second water temperature threshold.
Further, on the basis of the above embodiment, after determining whether the valve target position is in the usable state according to the water temperature of the engine cooling system in step S501 described above, the vehicle control method further includes steps S512 and S513 as follows.
Step S512, when the water temperature of the engine cooling system is greater than or equal to the third water temperature threshold, determining that the valve target position is in an unavailable state.
And step S513, controlling the valve of the warm air branch to move to the safety valve position.
Specifically, when the water temperature of the engine cooling system is greater than or equal to the third water temperature threshold, that is, the water temperature has reached a very high level, the engine is in a high-heat state, and the heat dissipation cooling purpose is urgently needed to be achieved, so that the valve target position determined according to the air conditioning requirement of the passenger cabin is not available, and the valve of the warm air branch is controlled to move to the safety valve position, so that the cooling efficiency of the engine cooling system is maximized.
As a possible embodiment, when the vehicle is powered down while it is stopped during driving, the valve of the warm air branch is automatically restored to the safety valve position. If the position of the safety valve is a preset normally open position, the valve of the warm air branch automatically moves to the preset normally open position when the whole vehicle is stopped and powered down; similarly, if the position of the safety valve is a preset cut-off position, the valve of the warm air branch automatically moves to the preset cut-off position when the whole vehicle is stopped and powered down. In this way, it is ensured that the valve of the warm air branch is able to support the highest cooling efficiency of the engine cooling system in the initial state.
Fig. 3 shows an application flowchart of the vehicle control method in one embodiment of the present application, including steps S301 to S304 as follows.
Step S301, after the whole vehicle is powered on, the warm air valve disposed on the warm air branch performs self-learning, that is, by detecting whether the warm air valve can move to the top dead center and the bottom dead center within a preset time, respectively, so as to determine whether the warm air valve has a running obstacle. If the warm air valve can not complete the moving operation, the corresponding fault information is reported.
Step S302, after the warm air valve finishes self-learning, detecting whether the water temperature of an engine cooling system is lower than a first water temperature threshold value; if the water temperature is lower than the first water temperature threshold, the engine is in a heat engine stage, and in order to avoid heat leakage and improve the speed of the heat engine, the warm air valve is controlled to close the warm air branch, so that cooling water of the engine cooling system cannot flow to the warm air branch.
In step S303, when the water temperature of the engine cooling system is higher than the first water temperature threshold but lower than the second water temperature threshold, it is indicated that the engine has completed the heat engine stage, and the vehicle is in a normal driving state. And determining the overall air conditioning requirement of the passenger cabin according to the air conditioning wind respectively output by the main driving air door and the auxiliary driving air door of the passenger cabin. Specifically, if any one of the main driving air door or the auxiliary driving air door outputs full-cooling air-conditioning air, the warm air valve is controlled to close the warm air branch; if the main driving air door or the auxiliary driving air door outputs all-hot air-conditioning air, controlling a warm air valve to fully open a warm air branch; if the air conditioning air output by the main driving air door or the auxiliary driving air door needs to be mixed and regulated by cold air and hot air, the warm air valve is controlled to execute the corresponding first target opening according to the cold and hot air proportion. On the basis, the cooling problem of the engine is also considered, and if the rotating speed or the load of the engine meets the safety boundary, namely the engine is in a high-heat load state, the warm air valve is controlled to execute the safety opening so as to ensure that the maximum cooling performance of the engine cooling system is realized. If the water temperature of the engine cooling system is further increased, namely the water temperature is higher than the second water temperature threshold value but lower than the third water temperature threshold value, interpolation calculation is carried out according to the first target opening and the safety opening to obtain a second target opening, and the second target opening is executed by controlling the warm air valve so as to meet the cooling requirement of the engine.
In step S304, when the water temperature of the engine cooling system is further increased, that is, the water temperature is higher than the third water temperature threshold, the cooling requirement of the engine is met as a system priority, and the warm air valve is controlled to execute the safety opening, so as to realize the maximum cooling performance of the engine cooling system.
The following describes an embodiment of an apparatus of the present application that may be used to perform the vehicle control method in the above-described embodiments of the present application. Fig. 4 schematically shows a block diagram of a vehicle provided in an embodiment of the present application. As shown in fig. 4, the vehicle 400 includes:
an air conditioner 410 for outputting warm air flow and cool air flow in corresponding proportions;
the valve 420 is arranged on a warm air branch of the engine cooling system and is used for adjusting the flow of the warm air branch;
the controller 430 is configured to monitor an operating state of an air conditioner in the passenger cabin and a damper position state, where the damper position state is used to characterize a damper of the air conditioner to output a warm air flow and a cool air flow in corresponding proportions when the damper is in different positions; if the working state of the air conditioner is monitored to be an operation state, determining a valve target position according to the position state of the air door; and controlling a valve arranged on a warm air branch of the engine cooling system to move to the target position of the valve.
Fig. 5 schematically shows a block diagram of a computer system for implementing an electronic device according to an embodiment of the present application.
It should be noted that, the computer system 500 of the electronic device shown in fig. 5 is only an example, and should not impose any limitation on the functions and the application scope of the embodiments of the present application.
As shown in fig. 5, the computer system 500 includes a central processing unit 501 (Central Processing Unit, CPU) which can execute various appropriate actions and processes according to a program stored in a Read-Only Memory 502 (ROM) or a program loaded from a storage section 508 into a random access Memory 503 (Random Access Memory, RAM). In the random access memory 503, various programs and data required for the system operation are also stored. The central processing unit 501, the read only memory 502, and the random access memory 503 are connected to each other via a bus 504. An Input/Output interface 505 (i.e., an I/O interface) is also connected to bus 504.
The following components are connected to the input/output interface 505: an input section 506 including a keyboard, a mouse, and the like; an output portion 507 including a Cathode Ray Tube (CRT), a liquid crystal display (Liquid Crystal Display, LCD), and the like, and a speaker, and the like; a storage portion 508 including a hard disk and the like; and a communication section 509 including a network interface card such as a local area network card, a modem, or the like. The communication section 509 performs communication processing via a network such as the internet. The drive 510 is also connected to the input/output interface 505 as needed. A removable medium 511 such as a magnetic disk, an optical disk, a magneto-optical disk, a semiconductor memory, or the like is mounted on the drive 510 as needed so that a computer program read therefrom is mounted into the storage section 508 as needed.
In particular, according to embodiments of the present application, the processes described in the various method flowcharts may be implemented as computer software programs. For example, embodiments of the present application include a computer program product comprising a computer program embodied on a computer readable medium, the computer program comprising program code for performing the method shown in the flowcharts. In such an embodiment, the computer program may be downloaded and installed from a network via the communication portion 509, and/or installed from the removable media 511. The computer program, when executed by the central processor 501, performs the various functions defined in the system of the present application.
It should be noted that, the computer readable medium shown in the embodiments of the present application may be a computer readable signal medium or a computer readable storage medium, or any combination of the two. The computer readable storage medium can be, for example, but not limited to, an electronic, magnetic, optical, electromagnetic, infrared, or semiconductor system, apparatus, or device, or a combination of any of the foregoing. More specific examples of the computer-readable storage medium may include, but are not limited to: an electrical connection having one or more wires, a portable computer diskette, a hard disk, a Random Access Memory (RAM), a read-Only Memory (ROM), an erasable programmable read-Only Memory (Erasable Programmable Read Only Memory, EPROM), flash Memory, an optical fiber, a portable compact disc read-Only Memory (CD-ROM), an optical storage device, a magnetic storage device, or any suitable combination of the foregoing. In the context of this document, a computer readable storage medium may be any tangible medium that can contain, or store a program for use by or in connection with an instruction execution system, apparatus, or device. In the present application, however, a computer-readable signal medium may include a data signal that propagates in baseband or as part of a carrier wave, with the computer-readable program code embodied therein. Such a propagated data signal may take any of a variety of forms, including, but not limited to, electro-magnetic, optical, or any suitable combination of the foregoing. A computer readable signal medium may also be any computer readable medium that is not a computer readable storage medium and that can communicate, propagate, or transport a program for use by or in connection with an instruction execution system, apparatus, or device. Program code embodied on a computer readable medium may be transmitted using any appropriate medium, including but not limited to: wireless, wired, etc., or any suitable combination of the foregoing.
The flowcharts and block diagrams in the figures illustrate the architecture, functionality, and operation of possible implementations of systems, methods and computer program products according to various embodiments of the present application. In this regard, each block in the flowchart or block diagrams may represent a module, segment, or portion of code, which comprises one or more executable instructions for implementing the specified logical function(s). It should also be noted that, in some alternative implementations, the functions noted in the block may occur out of the order noted in the figures. For example, two blocks shown in succession may, in fact, be executed substantially concurrently, or the blocks may sometimes be executed in the reverse order, depending upon the functionality involved. It will also be noted that each block of the block diagrams or flowchart illustration, and combinations of blocks in the block diagrams or flowchart illustration, can be implemented by special purpose hardware-based systems which perform the specified functions or acts, or combinations of special purpose hardware and computer instructions.
It should be noted that although in the above detailed description several modules or units of a device for action execution are mentioned, such a division is not mandatory. Indeed, the features and functions of two or more modules or units described above may be embodied in one module or unit, in accordance with embodiments of the present application. Conversely, the features and functions of one module or unit described above may be further divided into a plurality of modules or units to be embodied.
From the above description of embodiments, those skilled in the art will readily appreciate that the example embodiments described herein may be implemented in software, or may be implemented in software in combination with the necessary hardware. Thus, the technical solution according to the embodiments of the present application may be embodied in the form of a software product, which may be stored in a non-volatile storage medium (may be a CD-ROM, a usb disk, a mobile hard disk, etc.) or on a network, and includes several instructions to cause a computing device (may be a personal computer, a server, a touch terminal, or a network device, etc.) to perform the method according to the embodiments of the present application.
Other embodiments of the present application will be apparent to those skilled in the art from consideration of the specification and practice of the invention disclosed herein. This application is intended to cover any variations, uses, or adaptations of the application following, in general, the principles of the application and including such departures from the present disclosure as come within known or customary practice within the art to which the application pertains.
It is to be understood that the present application is not limited to the precise arrangements and instrumentalities shown in the drawings, which have been described above, and that various modifications and changes may be effected without departing from the scope thereof. The scope of the application is limited only by the appended claims.

Claims (10)

1. A vehicle control method, characterized by comprising:
monitoring the working state and the air door position state of an air conditioner of a passenger cabin, wherein the air door position state is used for representing the warm air flow and the cold air flow of corresponding proportions when an air door of the air conditioner is at different positions;
if the working state of the air conditioner is monitored to be an operation state, determining a valve target position according to the position state of the air door;
and controlling a valve arranged on a warm air branch of the engine cooling system to move to the target position of the valve, wherein the valve is used for adjusting the flow of the warm air branch.
2. The vehicle control method of claim 1, wherein the damper comprises a primary damper and a secondary damper, and determining a valve target position based on the damper position state comprises:
and calculating the valve opening of the warm air branch according to the air door position states corresponding to the main driving air door and the auxiliary driving air door respectively, and determining a valve target position corresponding to the valve opening.
3. The vehicle control method of claim 1, wherein determining a valve target position based on the damper position status comprises:
If the air door is at the first position, the air conditioner outputs cold air flow with the output larger than a first preset proportion, and the target position of the valve is determined to be a preset cut-off position, wherein the preset cut-off position is used for cutting off the flow of the warm air branch; or alternatively, the process may be performed,
if the air door is at the second position, the second position is different from the first position, the air conditioner output is larger than the warm air flow of a second preset proportion, the target position of the valve is determined to be a preset normally open position, and the preset normally open position is used for enabling the flow of the warm air branch to be maximum.
4. The vehicle control method according to claim 3, characterized in that the vehicle control method further comprises:
controlling the valve of the warm air branch to move to the preset cut-off position and the preset normally open position respectively;
if the valve of the warm air branch cannot move to the preset cut-off position within the preset time, generating fault information for caching, and sending the fault information when the valve of the warm air branch is controlled to move to the preset cut-off position next time; or alternatively, the process may be performed,
if the valve of the warm air branch cannot move to the preset normally open position within the preset time, generating fault information for caching, and sending the fault information when the valve of the warm air branch is controlled to move to the preset normally open position next time.
5. The vehicle control method according to claim 3, characterized in that after determining a valve target position from the damper position state, the vehicle control method further comprises:
judging whether the target position of the valve is in an available state according to the water temperature of an engine cooling system;
if the water temperature of the engine cooling system is smaller than a first water temperature threshold value, determining that the target position of the valve is in an unavailable state;
and controlling the valve of the warm air branch to move to the preset cut-off position.
6. The vehicle control method according to claim 5, characterized in that after judging whether the valve target position is in an available state based on a water temperature of an engine cooling system, the vehicle control method further comprises:
when the water temperature of the engine cooling system is larger than or equal to the first water temperature threshold value and smaller than a second water temperature threshold value, acquiring the real-time rotating speed and the real-time torque of the engine, wherein the first water temperature threshold value is smaller than the second water temperature threshold value;
if the real-time rotating speed of the engine reaches a safe rotating speed state and/or the real-time torque of the engine reaches a safe torque state, determining that the target position of the valve is in an unavailable state;
And controlling the valve of the warm air branch to move to a safety valve position, and when the valve of the warm air branch is positioned at the safety valve position, the cooling efficiency of the engine cooling system is highest.
7. The vehicle control method according to claim 6, characterized in that the vehicle control method further comprises:
when the real-time rotating speed of the engine is larger than a preset rotating speed threshold value in a preset rotating speed time, determining that the real-time rotating speed of the engine reaches the safe rotating speed state; the method comprises the steps of,
and when the real-time torque of the engine is larger than a preset torque threshold value in a preset torque time, determining that the real-time torque of the engine reaches the safe torque state.
8. The vehicle control method according to claim 6, characterized in that after judging whether the valve target position is in an available state based on a water temperature of an engine cooling system, the vehicle control method further comprises:
when the water temperature of the engine cooling system is greater than or equal to the second water temperature threshold and is smaller than a third water temperature threshold, the second water temperature threshold is smaller than the third water temperature threshold, and the target position of the valve is determined to be in an unavailable state;
Calculating a preset valve position according to the second water temperature threshold, the third water temperature threshold and the safety valve position;
and controlling the valve of the warm air branch to move to the preset valve position.
9. The vehicle control method according to claim 8, characterized in that after judging whether the valve target position is in an available state based on a water temperature of an engine cooling system, the vehicle control method further comprises:
when the water temperature of the engine cooling system is greater than or equal to the third water temperature threshold value, determining that the target valve position is in an unavailable state;
and controlling the valve of the warm air branch to move to the position of the safety valve.
10. A vehicle, characterized in that the vehicle comprises:
the air conditioner is used for outputting warm air flow and cold air flow in corresponding proportions;
the valve is arranged on a warm air branch of the engine cooling system and is used for adjusting the flow of the warm air branch;
the controller is used for monitoring the working state and the air door position state of the air conditioner of the passenger cabin, and the air door position state is used for representing the air door of the air conditioner to output warm air flow and cold air flow in corresponding proportion when the air door is at different positions; if the working state of the air conditioner is monitored to be an operation state, determining a valve target position according to the position state of the air door; and controlling a valve arranged on a warm air branch of the engine cooling system to move to the target position of the valve.
CN202310104913.7A 2023-02-09 2023-02-09 Vehicle control method, device, terminal and medium Active CN116080351B (en)

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Citations (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN102145645A (en) * 2010-02-08 2011-08-10 张�浩 Heating device of driving cab capable of preheating and raising engine for vehicle
CN105196834A (en) * 2015-10-29 2015-12-30 北京新能源汽车股份有限公司 Engine system for hybrid power vehicle and hybrid power vehicle
CN207077971U (en) * 2017-03-31 2018-03-09 一汽海马汽车有限公司 A kind of vehicle heat management device for being used to mix electrical automobile
CN207433191U (en) * 2017-11-21 2018-06-01 浙江义利汽车零部件有限公司 A kind of warm wind flow control system
CN114670595A (en) * 2020-12-24 2022-06-28 长城汽车股份有限公司 Vehicle warm air control method and device, warm air system and vehicle

Patent Citations (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN102145645A (en) * 2010-02-08 2011-08-10 张�浩 Heating device of driving cab capable of preheating and raising engine for vehicle
CN105196834A (en) * 2015-10-29 2015-12-30 北京新能源汽车股份有限公司 Engine system for hybrid power vehicle and hybrid power vehicle
CN207077971U (en) * 2017-03-31 2018-03-09 一汽海马汽车有限公司 A kind of vehicle heat management device for being used to mix electrical automobile
CN207433191U (en) * 2017-11-21 2018-06-01 浙江义利汽车零部件有限公司 A kind of warm wind flow control system
CN114670595A (en) * 2020-12-24 2022-06-28 长城汽车股份有限公司 Vehicle warm air control method and device, warm air system and vehicle

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