阅读说明：本技术 车辆通风换气控制方法、存储介质和系统 (Vehicle ventilation control method, storage medium, and system ) 是由 华中美 于 2021-03-10 设计创作，主要内容包括：本申请提供一种车辆通风换气控制方法、存储介质和系统,其中的方法包括：获取车辆外部环境的空气污染指数；获取车辆外循环风门的开度值；所述空气污染指数表示空气污染,同时车辆外循环风门的开度值大于零时,若所述空气污染指数小于或等于第一指数,则降低外循环风门的开度值。本申请提供的上述方案,在外循环风门开度值大于零时,如果车辆外部环境中的空气污染指数表示空气污染,则降低外循环风门的开度值,从而使尽可能少的污染空气进入到车内,由此可以提高车内空气质量。(The application provides a vehicle ventilation control method, a storage medium and a system, wherein the method comprises the following steps: acquiring an air pollution index of the external environment of the vehicle; acquiring an opening value of an external circulation air door of the vehicle; the air pollution index represents air pollution, meanwhile, the opening value of the vehicle external circulation air door is larger than zero, and if the air pollution index is smaller than or equal to the first index, the opening value of the external circulation air door is reduced. The above-mentioned scheme that this application provided, when extrinsic cycle air door opening value is greater than zero, if the air pollution index in the vehicle external environment indicates air pollution, then reduce extrinsic cycle air door's opening value to make in the contaminated air as far as possible enters into the car, can improve the interior air quality of car from this.)

1. A ventilation control method for a vehicle, comprising the steps of:

acquiring an air pollution index of the external environment of the vehicle;

acquiring an opening value of an external circulation air door of the vehicle;

the air pollution index represents air pollution, meanwhile, the opening value of the vehicle external circulation air door is larger than zero, and if the air pollution index is smaller than or equal to the first index, the opening value of the external circulation air door is reduced.

2. The vehicle ventilation control method according to claim 1, further comprising, when the air pollution index indicates air pollution while an opening value of a vehicle external circulation damper is greater than zero, the steps of:

if the air pollution index is larger than the first index and smaller than or equal to the second index, acquiring an ambient temperature value;

and if the environmental temperature value is greater than the preset anti-fog temperature value, closing the external circulation air door.

3. The vehicle ventilation control method of claim 2, wherein the air pollution index indicates no air pollution, further comprising the steps of:

obtaining the PM2.5 concentration of air inside the vehicle and the PM2.5 concentration of air outside the vehicle;

according to the PM2.5 concentration of the air in the vehicle, the PM2.5 concentration of the air outside the vehicle and the environmental temperature value, the adjusting mode of the opening value of the external circulation air door is determined, so that the PM2.5 concentration of the air outside the vehicle is lower than the PM2.5 concentration of the air in the vehicle, the environmental temperature value is larger than the opening value of the external circulation air door when the preset anti-fog temperature value is started or the opening value of the external circulation air door is increased, and the increase amount is determined according to the PM2.5 concentration of the air in the vehicle and/or the PM2.5 concentration of the air outside.

4. The ventilation control method for the vehicle according to claim 3, wherein the step of determining the adjustment mode of the opening value of the external circulation damper according to the PM2.5 concentration of the air inside the vehicle, the PM2.5 concentration of the air outside the vehicle, a preset calibrated PM2.5 threshold value and the environmental temperature value comprises the following steps:

if PM2.5 concentration-PM 2.5 concentration > set concentration threshold outside the car in the car, PM2.5 concentration > demarcation PM2.5 threshold outside the car, ambient temperature value > predetermine antifog temperature value, then increase the opening value of extrinsic cycle air door, just the bigger the air PM2.5 concentration outside the car the increase is the less.

5. The ventilation control method for the vehicle according to claim 3, wherein the step of determining the adjustment mode of the opening value of the external circulation damper according to the PM2.5 concentration of the air inside the vehicle, the PM2.5 concentration of the air outside the vehicle, a preset calibrated PM2.5 threshold value and the environmental temperature value comprises the following steps:

if the PM2.5 concentration inside the vehicle-the PM2.5 concentration outside the vehicle is larger than a set concentration threshold value, and the environmental temperature value is smaller than or equal to a temperature set value, the opening value of the external circulation air door is increased, and the larger the PM2.5 concentration of the air inside the vehicle is, the larger the increase is.

6. The ventilation control method for the vehicle according to claim 3, wherein the step of determining the adjustment mode of the opening value of the external circulation damper according to the PM2.5 concentration of the air inside the vehicle, the PM2.5 concentration of the air outside the vehicle, a preset calibrated PM2.5 threshold value and the environmental temperature value comprises the following steps:

if the PM2.5 concentration in the vehicle-the PM2.5 concentration outside the vehicle is larger than a set concentration threshold value, the temperature set value is smaller than the environmental temperature value and smaller than or equal to a set energy-saving temperature threshold value, the opening value of the external circulation air door is increased, and the larger the PM2.5 concentration in the vehicle is, the larger the increase is.

7. The ventilation control method for the vehicle according to claim 3, wherein the step of determining the adjustment mode of the opening value of the external circulation damper according to the PM2.5 concentration of the air inside the vehicle, the PM2.5 concentration of the air outside the vehicle, a preset calibrated PM2.5 threshold value and the environmental temperature value comprises the following steps:

if PM2.5 concentration-PM 2.5 concentration is not more than the set concentration threshold value outside the car in the car, PM2.5 concentration > demarcation PM2.5 threshold value outside the car, ambient temperature value > predetermine antifog temperature value, then reduce the opening value of outer circulation air door, just the big reduction of the big more of outside air PM2.5 concentration is big.

8. The ventilation control method for the vehicle according to claim 3, wherein the step of determining the adjustment mode of the opening value of the external circulation damper according to the PM2.5 concentration of the air inside the vehicle, the PM2.5 concentration of the air outside the vehicle, a preset calibrated PM2.5 threshold value and the environmental temperature value comprises the following steps:

and if the PM2.5 concentration in the automobile is less than or equal to the calibrated PM2.5 threshold value, the PM2.5 concentration outside the automobile is greater than the calibrated PM2.5 threshold value, and the environmental temperature value is greater than the preset anti-fog temperature value, closing the external circulation air door.

9. A storage medium having program information stored therein, wherein a computer reads the program information and executes the method for controlling ventilation of a vehicle according to any one of claims 1 to 8.

10. A ventilation control system for a vehicle, comprising at least one processor and at least one memory, wherein at least one memory stores program information, and at least one processor reads the program information and executes the ventilation control method for the vehicle according to any one of claims 1-8.

Technical Field

The application relates to the technical field of vehicle automation control, in particular to a vehicle ventilation control method, a storage medium and a system.

Background

With the rapid development of economy, the consumption level and quality requirements of people are remarkably improved. As a high-value consumer product, the demand and demand of the user for the automobile are also increasing. Since the environment inside the vehicle is closely related to the health of people inside the vehicle, it has become a key issue in the design of the vehicle.

The vehicle is provided with ventilation function, and aiming at some high-end vehicle types, a ventilation system with an internal circulation and an external circulation which are respectively and independently controlled is arranged. For such ventilation systems, the current common ventilation strategy is to automatically calculate the corresponding air outlet mode according to the temperature in the vehicle/the ambient temperature and the set temperature of the air conditioner, so as to determine the opening degrees of the inner and outer circulation air doors, and then control the circulation air doors, so that the temperature in the vehicle can quickly reach the set temperature and reduce the energy consumption.

However, the existing ventilation mode has a single consideration factor, and only aims at meeting the temperature in the vehicle and saving energy consumption, and cannot meet the requirements of users on the environment in the vehicle or the air quality.

Disclosure of Invention

The embodiment of the application aims to provide a vehicle ventilation control method, and solves the technical problem that in the prior art, when a ventilation system is controlled, only the temperature in a vehicle is considered, but the quality of the air in the vehicle is not considered, so that the improvement effect of the quality of the air in the vehicle is poor.

To this end, some embodiments of the present application provide a vehicle ventilation control method, comprising the steps of:

acquiring an air pollution index of the external environment of the vehicle;

acquiring an opening value of an external circulation air door of the vehicle;

the air pollution index represents air pollution, meanwhile, the opening value of the vehicle external circulation air door is larger than zero, and if the air pollution index is smaller than or equal to the first index, the opening value of the external circulation air door is reduced.

In some embodiments of the present application, a ventilation control method for a vehicle, when the air pollution index indicates air pollution and an opening value of an external circulation damper of the vehicle is greater than zero, further includes the following steps:

if the air pollution index is larger than the first index and smaller than or equal to the second index, acquiring an ambient temperature value;

and if the environmental temperature value is greater than the preset anti-fog temperature value, closing the external circulation air door.

In some embodiments of the present application, a ventilation control method for a vehicle, when the air pollution index indicates no air pollution, further includes the following steps:

obtaining the PM2.5 concentration of air inside the vehicle and the PM2.5 concentration of air outside the vehicle;

according to the adjusting mode of the opening value of the external circulation air door determined by the concentration of the PM2.5 of the air in the vehicle, the concentration of the PM2.5 of the air outside the vehicle and the environmental temperature value, the concentration of the PM2.5 of the air outside the vehicle is lower than the concentration of the PM2.5 of the air in the vehicle, the environmental temperature value is larger than the opening value of the external circulation air door which is opened or increased when the preset anti-fog temperature value is adopted, and the increase amount is determined according to the concentration of the PM2.5 of the air in the vehicle and the concentration of the PM2.5 of the.

In some embodiments of the present application, the method for controlling ventilation of a vehicle, wherein the step of determining an adjustment manner of an opening value of an external circulation damper according to a PM2.5 concentration of the air inside the vehicle, a PM2.5 concentration of the air outside the vehicle, a preset calibrated PM2.5 threshold, and the environmental temperature value includes:

if PM2.5 concentration-PM 2.5 concentration > set concentration threshold outside the car in the car, PM2.5 concentration > demarcation PM2.5 threshold outside the car, ambient temperature value > predetermine antifog temperature value, then increase the opening value of extrinsic cycle air door, just the bigger the air PM2.5 concentration outside the car the increase is the less.

In some embodiments of the present application, the method for controlling ventilation of a vehicle, wherein the step of determining an adjustment manner of an opening value of an external circulation damper according to a PM2.5 concentration of the air inside the vehicle, a PM2.5 concentration of the air outside the vehicle, a preset calibrated PM2.5 threshold, and the environmental temperature value includes:

if the PM2.5 concentration inside the vehicle-the PM2.5 concentration outside the vehicle is larger than a set concentration threshold value, and the environmental temperature value is smaller than or equal to a temperature set value, the opening value of the external circulation air door is increased, and the larger the PM2.5 concentration inside the vehicle is, the larger the increase is.

In some embodiments of the present application, the method for controlling ventilation of a vehicle, wherein the step of determining an adjustment manner of an opening value of an external circulation damper according to a PM2.5 concentration of the air inside the vehicle, a PM2.5 concentration of the air outside the vehicle, a preset calibrated PM2.5 threshold, and the environmental temperature value includes:

if the PM2.5 concentration in the vehicle-the PM2.5 concentration outside the vehicle is larger than a set concentration threshold value, and the temperature set value is smaller than the environmental temperature value and smaller than or equal to a set energy-saving temperature threshold value, the opening value of the external circulation air door is increased, and the larger the PM2.5 concentration in the vehicle is, the larger the increase amount is.

In some embodiments of the present application, the method for controlling ventilation of a vehicle, wherein the step of determining an adjustment manner of an opening value of an external circulation damper according to a PM2.5 concentration of the air inside the vehicle, a PM2.5 concentration of the air outside the vehicle, a preset calibrated PM2.5 threshold, and the environmental temperature value includes:

if PM2.5 concentration-PM 2.5 concentration is not more than the set concentration threshold value outside the car in the car, PM2.5 concentration > demarcation PM2.5 threshold value outside the car, ambient temperature value > predetermine antifog temperature value, then reduce the opening value of outer circulation air door, just the big reduction of the big more of outside air PM2.5 concentration is big.

In some embodiments of the present application, the method for controlling ventilation of a vehicle, wherein the step of determining an adjustment manner of an opening value of an external circulation damper according to a PM2.5 concentration of the air inside the vehicle, a PM2.5 concentration of the air outside the vehicle, a preset calibrated PM2.5 threshold, and the environmental temperature value includes:

and if the PM2.5 concentration in the automobile is less than or equal to the calibrated PM2.5 threshold value, the PM2.5 concentration outside the automobile is greater than the calibrated PM2.5 threshold value, and the environmental temperature value is greater than the preset anti-fog temperature value, closing the external circulation air door.

Some embodiments of the present application further provide a storage medium, wherein the storage medium stores program information, and a computer reads the program information and executes the method for controlling ventilation and air exchange of a vehicle according to any one of the above.

Some embodiments of the present application further provide a vehicle ventilation control system, which includes at least one processor and at least one memory, at least one of the memories storing program information, at least one of the processors executing the vehicle ventilation control method according to any one of the above methods after reading the program information.

Compared with the prior art, the technical scheme provided by the application at least has the following beneficial effects: when the opening value of the external circulation air door is larger than zero, if the air pollution index in the external environment of the vehicle indicates air pollution, the opening value of the external circulation air door is reduced, so that the polluted air as little as possible enters the vehicle, and the quality of the air in the vehicle can be improved.

Drawings

The technical solutions in the embodiments of the present application will be clearly and completely described below with reference to the drawings in the embodiments of the present application.

FIGS. 1 a-1 b are schematic diagrams of two ventilation modes of an air conditioning cabinet with independent external circulation and internal circulation damper switching control functions;

FIG. 2 is a flow chart of a method for controlling ventilation of a vehicle according to an embodiment of the present application;

FIG. 3 is a flow chart of a method for controlling ventilation of a vehicle according to another embodiment of the present application;

4 a-4 d are flow charts of a vehicle ventilation control method according to yet another embodiment of the present application;

FIG. 5 is a schematic diagram of a hardware connection for ventilation control of a vehicle according to an embodiment of the present application;

fig. 6 is a schematic diagram of a hardware connection structure for ventilation control of a vehicle according to another embodiment of the present application.

Detailed Description

In the description of the present application, it should be noted that the terms "center", "upper", "lower", "left", "right", "vertical", "horizontal", "inner", "outer", and the like indicate orientations or positional relationships based on the orientations or positional relationships shown in the drawings, and are only used for convenience of description of the present application, and do not indicate or imply that the device or component being referred to must have a specific orientation, be constructed and operated in a specific orientation, and thus, should not be construed as limiting the present application. Furthermore, the terms "first," "second," and "third" are used for descriptive purposes only and are not to be construed as indicating or implying relative importance.

In the description of the present application, it is to be noted that, unless otherwise explicitly specified or limited, the terms "mounted," "connected," and "connected" are to be construed broadly, e.g., as meaning either a fixed connection, a removable connection, or an integral connection; can be mechanically or electrically connected; the two components can be directly connected or indirectly connected through an intermediate medium, and the two components can be communicated with each other. The specific meaning of the above terms in the present application can be understood in a specific case by those of ordinary skill in the art.

Currently, some vehicle models employ an air conditioning cabinet 2 having independent external circulation and internal circulation damper switching structures, as shown in fig. 1a and 1 b. The automobile ECU converts the current ventilation demand according to the pre-stored ventilation logic and sends the ventilation demand to the MCU shown in the figure. The MCU sends an operation instruction to the servo motor or the stepping motor to the external circulation executing mechanism 1 and the internal circulation executing mechanism 3, and the external circulation air door and the internal circulation air door can be controlled at 0-100% opening values respectively. Therefore, the opening values of the internal circulation control and the external circulation control can be independently controlled, and partial external circulation air inlet can be compensated when full internal circulation is realized or partial internal circulation air inlet can be compensated when full external circulation is realized. The air outside and/or inside can be exhausted through the air outlet of the air conditioner after being filtered by the high-efficiency filter element 4. As mentioned above, the opening values of the inner circulation damper and the outer circulation damper can be determined according to the operation result, fig. 1a shows a 100% outer circulation mode in which the opening value of the outer circulation damper is 100% and the opening value of the inner circulation damper is 0; FIG. 1b shows a 100% outside loop & 25% inside loop mode with an outside loop damper opening value of 100% and an inside loop damper opening value of 25%. According to the operation result, the opening value of the internal and external circulation air door can also realize a 100% internal circulation mode; 50% external circulation & 50% internal circulation, 25% external circulation & 100% internal circulation, etc. The scheme in the following embodiments of the present application is mainly implemented for the independent control structure of the internal and external circulation dampers in fig. 1a and 1b, and can be applied to the ECU of a vehicle.

As shown in fig. 2, a ventilation control method for a vehicle provided in some embodiments of the present application may include the steps of:

s101: an air pollution index of an environment outside the vehicle is obtained. The air pollution of the external environment is mostly automobile exhaust, and especially when a traffic jam occurs, the exhaust of the front automobile and the exhaust of the adjacent automobiles can cause the air pollution index in the external environment of the current vehicle to be rapidly promoted. In the detection, the air pollution index can be detected by an aqs (air Quality sensors) sensor provided in the automobile.

S102: and acquiring the opening value of the vehicle external circulation air door. Because the opening value of the outer circulation air door is obtained by converting the automobile ECU, the opening value can be directly determined according to the operation result in the previous control period.

S103: the air pollution index represents air pollution, meanwhile, the opening value of the vehicle external circulation air door is larger than zero, and if the air pollution index is smaller than or equal to the first index, the opening value of the external circulation air door is reduced. The air pollution index can be classified according to national standards, and generally, the pollution level reached by the content of the automobile exhaust in a traffic jam scene can be one level or two levels, so that the first index and the second index applied to the embodiment of the application represent the index that the content of the exhaust reaches the pollution level. In the embodiment of the application, the automobile exhaust content exceeding the first index can be regarded as the first-level pollution, and the automobile exhaust content exceeding the first index can be regarded as the second-level pollution. Above scheme, the pollution condition exists in the external environment air, and only pollution level is not high, then reduces the opening value of extrinsic cycle air door to make as little polluted air as possible enter into the car, can improve the interior air quality of car from this.

In some embodiments, as shown in fig. 3, the method may further include, when the air pollution index indicates air pollution and the opening value of the external circulation damper of the vehicle is greater than zero, the following steps:

s104: if the air pollution index is larger than the first index and smaller than or equal to the second index, acquiring an ambient temperature value; that is, the content of the automobile exhaust reaches the degree of secondary pollution, and the environmental temperature value can be detected according to a temperature sensor arranged on the automobile in the step.

S105: and if the environmental temperature value is greater than the preset anti-fog temperature value, closing the external circulation air door.

The anti-fog temperature value may be selected to be 0 deg.c, and the full internal circulation mode should be prohibited to prevent fogging in the vehicle from affecting safe driving when the ambient temperature is less than 0 deg.c according to relevant regulations of the vehicle design. And if the ambient temperature is higher than the preset anti-fogging temperature value, the internal circulation can be executed at the moment, so that the external circulation air door can be closed, and the ventilation mode of 100% internal circulation is operated. In the scheme, when the air pollution of the external environment is high, the external circulation is closed when the temperature condition permits, so that the air seriously polluted from the outside is prevented from entering the vehicle, and the quality of the air in the vehicle is further improved.

As shown in fig. 3, the above method may further include the following steps when the air pollution index indicates no air pollution:

s106: and acquiring the PM2.5 concentration of air inside the vehicle and the PM2.5 concentration of air outside the vehicle. The PM2.5 can be detected by PM2.5 sensors installed inside and outside the automobile.

S107: according to the adjusting mode of the opening value of the external circulation air door determined by the concentration of the PM2.5 of the air in the vehicle, the concentration of the PM2.5 of the air outside the vehicle and the environmental temperature value, the concentration of the PM2.5 of the air outside the vehicle is lower than the concentration of the PM2.5 of the air in the vehicle, the environmental temperature value is larger than the opening value of the external circulation air door which is opened or increased when the preset anti-fog temperature value is adopted, and the increase amount is determined according to the concentration of the PM2.5 of the air in the vehicle and the concentration of the PM2.5 of the.

If the concentration of PM2.5 outside the vehicle is obviously lower than that of PM2.5 inside the vehicle, the air inside the vehicle can be purified theoretically through the air outside the vehicle, therefore, if the external environment temperature is higher than the anti-fogging temperature value at the moment, the opening value of the external circulation air door can be increased (if the original external air door is in a closed state, the external circulation air door can be opened at the moment), and in this case, the opening value increase of the external circulation air door is determined according to the actually detected concentrations of the internal PM2.5 and the external PM 2.5. The key point of this scheme lies in, outside circulation compensation inner loop when ventilation as far as possible to can reduce interior PM2.5 concentration, at this moment, therefore the increase of extrinsic cycle air door opening value reduces along with the reduction of interior PM2.5 concentration, and the increase of extrinsic cycle air door opening value is littleer when the outer PM2.5 concentration of car is big simultaneously, and concrete value can set up through the mode of calibration test.

In some embodiments of the present application, as shown in fig. 4a to 4d, a complete set of control flow according to the ventilation control principle is provided, if the air conditioner is in an automatic control mode, in the automatic control mode, the opening values of the inner and outer air doors are obtained by calculating through the vehicle ECU, and if the air conditioner is in a manual mode, the setting of the user is preferentially used as the standard. The ventilation method in the embodiment includes:

s201: and judging whether the air pollution index exceeds the standard according to the air pollution index of the external environment of the vehicle, if not, executing the step S301, and if so, executing the step S202 or the step S204 according to the pollution degree.

S202: the ambient air outside the vehicle reaches the primary pollution, and step S203 is performed.

S203: the opening degree of the outer circulation damper was decreased by L1. The size of L1 can be obtained by calibration test, and can be 50%, 40% and the like of the original opening degree value.

S204: the ambient air outside the vehicle reaches the secondary pollution, and step S205 is performed.

S205: and (4) judging whether the ambient temperature value outside the vehicle is greater than a preset anti-fog temperature value (0 ℃), if so, executing step S206, and otherwise, executing step S207.

S206: and executing a ventilation strategy obtained in an automatic control mode of the air conditioner, so as to avoid fogging in the vehicle.

S207: and (3) closing the external circulation air door, wherein the external environment temperature allows 100% of internal circulation, and closing the external circulation air door in order to improve the quality of air in the vehicle.

S301: and judging whether the concentration of the PM2.5 in the vehicle exceeds the standard, namely judging whether the concentration of the PM2.5 in the vehicle is more than a calibrated PM2.5 threshold value, if so, executing a step S302, and otherwise, executing a step S501.

S302: and judging whether the condition that the PM2.5 concentration-the PM2.5 concentration outside the vehicle is greater than a set concentration threshold value is met, if so, executing step S303, and otherwise, executing step S401.

S303: and judging whether the concentration of PM2.5 outside the vehicle exceeds the standard, namely judging whether the concentration of PM2.5 outside the vehicle is more than a calibrated PM2.5 threshold value, if so, executing a step S304, and otherwise, executing a step S306.

S304: and judging whether the ambient temperature value outside the vehicle is greater than a preset anti-fog temperature value, if so, executing step S305, and otherwise, executing step S206.

S305: the larger the concentration of PM2.5 outside the vehicle, the smaller the increase L2, by increasing the opening value of the outer circulation damper. The calibrated PM2.5 threshold may be determined according to relevant regulations, and values may be selected to meet the air goodness criteria. The set concentration threshold may be selected as a percentage of the nominal PM2.5 threshold, such as 50% by the nominal PM2.5 threshold. The value of L2 can be obtained by way of a calibration test, with the value of L2 being smaller as the PM2.5 concentration outside the vehicle is higher. In the scheme, the PM2.5 concentration inside and outside the vehicle exceeds the standard, but obviously the air quality outside the vehicle is better than that inside the vehicle, and at the moment, the air inflow of the external circulation can be improved so as to improve the air quality inside the vehicle.

S306: and judging whether the ambient temperature value outside the vehicle is less than or equal to the temperature set value, if so, executing step S307, and otherwise, executing step S308. The temperature setting value may be selected as an ambient temperature value affecting the ventilation mode, for example, when the ventilation mode of the air conditioner enters the cooling mode when the ambient temperature is 30 ℃, the setting temperature value may be set to 30 ℃.

S307: the opening value of the external circulation damper is increased, and the larger the concentration of the PM2.5 in the vehicle is, the larger the increase L3 is. The value of L3 can be obtained by a calibration test, if the PM2.5 inside the vehicle exceeds the standard and the PM2.5 outside the vehicle does not exceed the standard, the air quantity entering the vehicle by the external circulation can be increased to improve the quality of the air inside the vehicle, and at the moment, the higher the concentration of the PM2.5 inside the vehicle is, the larger the entering quantity of the external circulation air is, and the higher the increasing quantity of the corresponding external circulation air opening is adjusted.

S308: and judging whether the ambient temperature value outside the vehicle is greater than the set energy-saving temperature threshold value, if so, executing step S206, and otherwise, executing step S309. Setting the energy saving temperature threshold may select a higher temperature value, such as 35 c.

S309: the opening value of the external circulation air door is increased, and the larger the concentration of the PM2.5 in the air in the vehicle is, the larger the increasing amount L4 is, and the L4 < L3 is simultaneously. That is, the outside environment temperature value is increased by the opening degree value of the outer circulation damper when it is lower than the energy saving temperature threshold value, and the opening degree value of the outer circulation damper is larger when the outside environment temperature value is lower than the set temperature value, and preferably L4 is 50% × L3. This scheme can improve the energy-conservation nature in the air conditioner ventilation process when improving the interior air quality of car.

S401: and judging whether the PM2.5 concentration outside the vehicle exceeds the standard, namely judging whether the PM2.5 concentration outside the vehicle is greater than a calibrated PM2.5 threshold, if so, executing a step S402, and otherwise, executing a step S403.

S402: and judging whether the environmental temperature value is larger than a preset anti-fog temperature value, if so, executing the step S403, otherwise, executing the step S206.

S403: the opening value of the outer circulation damper is reduced, and the greater the concentration of PM2.5 outside the vehicle, the greater the reduction amount L5. The value of L5 can be obtained through a calibration test mode, and according to the scheme, under the conditions that the concentration of PM2.5 inside the automobile exceeds the standard, the concentration of PM2.5 outside the automobile exceeds the standard, the concentration of PM2.5 inside the automobile is less than the concentration of PM2.5 outside the automobile, and the ambient temperature outside the automobile does not cause fogging, the air quantity entering the automobile from the outside of the automobile is reduced, so that the polluted air quantity entering the automobile is reduced.

S501: and judging whether the condition that the PM2.5 concentration inside the vehicle-PM 2.5 concentration outside the vehicle is greater than a set concentration threshold value is met, if not, executing the step S502, and if so, executing the step S505.

S502: and judging whether the concentration of PM2.5 outside the vehicle exceeds the standard, namely judging whether the concentration of PM2.5 outside the vehicle is more than a calibrated PM2.5 threshold value, if so, executing a step S503, and if not, executing a step S206.

S503: and judging whether the ambient temperature value outside the vehicle is greater than a preset anti-fog temperature value, if so, executing step S504, and otherwise, executing step S206.

S504: the outer circulation damper is closed. That is, if the concentration of PM2.5 outside the vehicle exceeds the standard and the difference between the concentrations of PM2.5 inside and outside the vehicle is small, the quality of air inside the vehicle cannot be improved when air outside the vehicle enters the vehicle, and at this time, if the external ambient temperature does not cause the fogging problem, the external circulation damper is directly closed.

S505: and judging whether the ambient temperature value outside the vehicle is less than or equal to the temperature set value, if so, executing step S506, otherwise, executing step S507.

S506: the opening value of the external circulation damper is increased, and the larger the concentration of the PM2.5 in the vehicle is, the larger the increase L6 is. The value of L6 can be obtained by a calibration test, when the quality of the air outside the vehicle is obviously better than that of the air inside the vehicle, the air intake amount of the external circulation can be increased to improve the quality of the air inside the vehicle, and at the moment, the higher the concentration of PM2.5 inside the vehicle is, the larger the intake amount of the external circulation air is, and the higher the increase amount of the corresponding external circulation air opening is adjusted.

S507: and judging whether the ambient temperature value outside the vehicle is greater than the set energy-saving temperature threshold value, if so, executing step S206, and otherwise, executing step S508.

S508: the opening value of the external circulation damper is increased, and the larger the concentration of the in-vehicle air PM2.5 is, the larger the amount L7 is, and at the same time, L7 < L6, for example, L7 is 50% × L6. When the quality of air outside the vehicle is obviously better than that of air inside the vehicle, the air inflow of the external circulation is improved to improve the quality of the air inside the vehicle, but the external environment temperature value is required to be executed under the condition that the set energy-saving temperature threshold value is not exceeded, so that the scheme can improve the quality of the air inside the vehicle and improve the energy-saving performance of the air conditioner in the ventilation process.

The above embodiments of the present application may be implemented by directly using the original ventilation control logic when the automatic control mode implementation scheme in step S206 is involved, and will not be described in detail in the present application. In the above scheme of the present application, a scheme of how to adjust an existing ventilation strategy when adding a target of improving the air quality in the vehicle according to the relationship between the air quality in the vehicle and the air quality outside the vehicle is mainly described. Correspondingly, when the opening value of the outer circulation air door is increased or reduced, the opening value of the inner circulation air door can be compensated, or the ventilation operation can be performed according to the original control logic after the quality of air in the vehicle is improved.

Some embodiments of the present application provide a storage medium, wherein the storage medium stores program information, and a computer reads the program information and executes the vehicle ventilation control method according to any one of the above aspects.

Some embodiments of the present application provide a vehicle ventilation and air-exchange control system, as shown in fig. 5, the vehicle ventilation and air-exchange control system includes at least one processor 101 and at least one memory 102, at least one of the memories 102 stores program instructions, and at least one of the processors 101 reads the program instructions to execute the vehicle ventilation and air-exchange control method according to any one of the above aspects. The above vehicle ventilation control system may further include: an input device 103 and an output device 104. The processor 101, memory 102, input device 103, and output device 104 may be connected by a bus or other means. The system can execute the method provided by the embodiment of the application, and has the corresponding functional modules and beneficial effects of the execution method. For technical details that are not described in detail in this embodiment, reference may be made to the methods provided in the embodiments of the present application.

As shown in fig. 6, the vehicle ventilation control system provided in the above embodiment of the present application may be an on-board controller 100 or ECU in an automobile, and the air conditioning cycle control system 300 may include the on-board controller 100 and the cycle mechanism controller 200. In order to be able to execute the various control schemes in the above method embodiments, the above system is able to communicate with a plurality of on-board sensors to obtain information detected by the on-board sensors. As shown, the in-vehicle sensor may include an AQS sensor 301 capable of detecting the quality of the external ambient air, an external temperature sensor 302 capable of detecting the temperature of the external ambient air, an internal temperature sensor 303 capable of detecting the temperature of the in-vehicle, a PM2.5 sensor 304 capable of detecting the concentration of PM2.5, a light intensity sensor 305 capable of detecting the illuminance of sunlight, and an outlet temperature sensor 306 capable of detecting the temperature of an outlet, wherein the air conditioner temperature set value acquisition sensor 307 is capable of transmitting the set target value of the air conditioner to the in-vehicle controller 100. In addition, in the air conditioner circulation control process, the driving voltages or driving currents of the external circulation air door motor 308, the internal circulation air door motor 309, the air outlet mode air door motor 310 and the mixed mode motor 311 are mainly adjusted to change corresponding air door opening values, and the relationship between the air door opening values and motor driving signals can be stored in the system in advance, so that the system can determine the driving signals of the motors after determining the air door opening values. The application provides a ventilation strategy, the supplementary control to automatic air conditioner circulation air door of the testing result that combines air PM2.5 sensor, the air quality sensor of whole car to the realization is to whole car intelligence, high-efficient purification, energy-conserving ventilation, the strategy of taking a breath.

Finally, it should be noted that: the above embodiments are only used to illustrate the technical solutions of the present application, and not to limit the same; although the present application has been described in detail with reference to the foregoing embodiments, it should be understood by those of ordinary skill in the art that: the technical solutions described in the foregoing embodiments may still be modified, or some technical features may be equivalently replaced; and such modifications or substitutions do not depart from the spirit and scope of the corresponding technical solutions in the embodiments of the present application.