WO2018176598A1

WO2018176598A1 - Temperature compensation method and system for solar air conditioner for vehicle

Info

Publication number: WO2018176598A1
Application number: PCT/CN2017/084512
Authority: WO
Inventors: 吴建国
Original assignee: 深圳市靖洲科技有限公司
Priority date: 2017-03-31
Filing date: 2017-05-16
Publication date: 2018-10-04
Also published as: CN106864205A; CN106864205B

Abstract

A temperature compensation method and system for a solar air conditioner for a vehicle. The method comprises: (1) detecting the position of the sun; (2) measuring a solar direct radiation intensity value, a solar scattering radiation intensity value, and hourly temperature and humidity on the design day; (3) measuring the current longitude value, latitude value and traveling direction of a vehicle; (4) determining a positional relationship between the sun and the vehicle; (5) determining outdoor environment data; (6) calculating multiple temperature compensation coefficients of the area where the vehicle is located, and storing the coefficients in a database; (7) querying the corresponding temperature compensation coefficients in the database; measuring sunlight intensity by means of a single-area light intensity sensor; and performing sunlight compensation, as temperature compensation, on different areas of the vehicle according to a functional relationship between the sunlight intensity and the temperature compensation coefficients. According to the method, the light intensity and the temperature are coupled, thereby achieving the general use of a solar air conditioner for a vehicle, and reducing the costs and the achieving complexity of a multi-temperature-zone automatic air conditioner.

Description

Temperature compensation method and system for solar air conditioner for vehicle

Technical field

The invention relates to an air conditioning technology for a vehicle, in particular to a temperature compensation method and system for a solar air conditioner for a vehicle.

Background technique

Today, air conditioning is an indispensable part of the car. With the increase in customer comfort requirements, multi-temperature solar air conditioners that enable in-vehicle temperature zone control are increasingly being used on vehicles.

During the driving process of the vehicle, the influence of sunlight on the various temperature zones of the vehicle varies with the positional relationship between the sun and the vehicle, and the influence of factors such as the intensity of sunlight on various parts of the vehicle varies with the seasons. The high temperature environment in the car accelerates the volatilization of carcinogens in the interior decoration materials, which seriously affects people's health. The refrigerant used in the refrigeration drive system will affect the atmosphere. Therefore, the current solar car auxiliary air conditioning system is widely used. The principle of solar photoelectric conversion converts the received solar energy into electrical energy, then drives the semiconductor refrigeration to adjust the internal temperature of the car, and divides the temperature zones in consideration of the number of passengers in the car and the position of the ride and the location of the car decoration. The compensation requirements for air conditioning for sunlight exposure are also different in each temperature zone. At present, multi-temperature zone air conditioners use multi-temperature zone sunlight sensors to measure the influence of sunlight on different areas, and calculate the air-conditioning compensation of each temperature zone. Since multi-temperature zone air conditioners need to integrate multiple temperature sensors, the cost is high, which is not conducive to cost control; on the other hand, multiple temperature sensors inevitably lead to a corresponding increase in the demand for input system resources of the on-board system controller, thereby increasing its The complexity of implementation is not conducive to the promotion and application of unmanned vehicles. Instead, the central air conditioning conventional control method is used for temperature compensation, usually based on the PID algorithm. DDC control, and the object of control of the air conditioning system - the thermal object has some unique features, such as a variety of interference effects, resulting in a wide range of air conditioning load fluctuations, different seasons make the air conditioning system more versatile, the correlation between temperature and humidity increased The difficulty of temperature control. Therefore, the conventional PID temperature control of the prior art is difficult to adapt to the requirements of multi-zone temperature control, the robustness is poor, the parameter hysteresis is strong, the precise control is difficult, and overshoot and oscillation are prone to occur.

Summary of the invention

The problem solved by the invention is to adopt a more optimized temperature compensation method and system, and overcome the characteristics of uncertainty, multi-case condition, time-varying and multi-disturbance of the solar air-conditioning temperature system of the vehicle, and adopt on the basis of obtaining massive data. The predictive compensation control strategy performs compensation control.

To solve the above problems, the present invention provides a temperature compensation method for a solar air conditioner for a vehicle, comprising:

(1) Detecting the sun's dip, the time difference, the local sun, the solar elevation and azimuth, and the angle of incidence of the sun to calculate the position of the sun,

(2) Detecting the direct radiation intensity value of the solar radiation, the solar radiation scattering intensity value, and the hourly temperature and humidity of the design day;

(3) detecting the current longitude and latitude values of the vehicle and the current driving direction of the vehicle;

(4) determining a positional relationship between the sun and the vehicle according to a magnitude relationship between a position of the sun and a latitude value of the vehicle and a longitude value of the sun position;

(5) Determine the outdoor environmental data by calling the average meteorological data of the same day in the past few years according to the location and season of the vehicle;

(6) Calculate multiple temperature compensation coefficients of the area where the vehicle is located according to the hourly temperature of the design day, the outdoor environment data and the indoor environmental data, and store them in the database;

(7) querying a corresponding temperature compensation coefficient in the database according to a driving direction of the vehicle, a positional relationship between the sun and the vehicle, and a temperature compensation coefficient of the vehicle region; and detecting by a single-zone light intensity sensor Sunlight intensity; according to the sunlight intensity and the temperature compensation coefficient The functional relationship is solar compensated for different areas of the vehicle as temperature compensation.

Preferably, the detecting the sun position comprises longitude value detection and latitude value detection.

Preferably, the longitude value detection comprises: obtaining a longitude value of a sun position corresponding to a current time according to a linear relationship between a solar longitude and a design day change.

Preferably, the latitude value detection comprises: obtaining a latitude value of a sun position corresponding to the current date according to a linear relationship of the sun latitude and the design day change.

Preferably, the detecting the current longitude value and the latitude value of the vehicle comprises: detecting, by the GPS positioning device, the current longitude value and the latitude value of the vehicle.

Preferably, the detecting the current driving direction of the vehicle comprises: determining a driving direction of the vehicle according to a change in a longitude value and a latitude value of the vehicle.

Preferably, the indoor environmental data includes: hourly incoming heat of the opaque enclosure of the vehicle body, hourly heat input of the window glass, heat dissipation of the occupant, heat dissipation of the electrical equipment, and/or introduction of the fresh air ventilation system. The heat.

Preferably, performing solar compensation on different regions of the vehicle according to a relationship between the sunlight intensity and the temperature compensation coefficient comprises multiplying the sunlight intensity by the temperature compensation coefficient as the vehicle Temperature compensation values for different areas.

A temperature compensation system for a solar air conditioner for a vehicle, comprising: a first detecting unit for detecting a sun tilt angle, a time difference, a local solar time, a solar altitude angle and an azimuth angle, and an incident angle of the sun to calculate a position of the sun; a unit for detecting a direct solar radiation intensity value, a solar radiation scattering intensity value, and a hourly temperature and humidity of a design date; and a third detecting unit configured to detect a current longitude value and a latitude value of the vehicle and a current driving direction of the vehicle a judging unit determining the positional relationship between the sun and the vehicle according to the magnitude relationship between the position of the sun and the latitude value of the vehicle and the longitude value of the sun position; the outdoor environment determining unit, according to the location and location of the vehicle During the season, the average meteorological data of the same day in the past few years is used to determine the outdoor environmental data; the calculation unit calculates a plurality of temperature compensation coefficients of the area where the vehicle is located according to the hourly temperature of the design day, the outdoor environmental data, and the indoor environmental data. Coexisting in the database; control unit for controlling single zone solar sensor detection Light intensity; a compensation unit, configured to query a corresponding temperature compensation coefficient in the database according to a driving relationship between the driving direction of the vehicle, a positional relationship between the sun and the vehicle, and a temperature compensation coefficient of the region where the vehicle is located, and according to the sunlight light The functional relationship between the strong and the temperature compensation coefficients is solar compensated for different regions of the vehicle to achieve temperature compensation.

Preferably, the first detecting unit comprises: a first detecting subunit for detecting a design time; and a first acquiring subunit, configured to acquire a sun position corresponding to the current time according to a linear relationship of the solar longitude changes with time. Longitude value.

Preferably, the first detecting unit comprises: a second detecting subunit for detecting a design time; and a second acquiring subunit for acquiring a sun position corresponding to the current date according to a linear relationship of the sun latitude with time. Latitude value.

Preferably, the second detecting unit comprises: a control subunit, configured to detect a current longitude value and a latitude value of the vehicle by using a GPS positioning device.

Preferably, the second detecting unit further comprises: a determining subunit, configured to determine a driving direction of the vehicle according to a change of a longitude value and a latitude value of the vehicle.

Preferably, the compensation unit comprises: a calculation subunit, and performing solar compensation on different regions of the vehicle according to a functional relationship between the sunlight intensity and the temperature compensation coefficient comprises multiplying the sunlight intensity by The temperature compensation coefficient is used as a temperature compensation value for different regions of the vehicle.

Compared with the prior art, the technical solution of the embodiment of the present invention has the following advantages:

By comparing the position of the sun with the latitude and longitude of the vehicle, the positional relationship between the sun and the vehicle is obtained, and the driving direction of the vehicle can be combined to know the extent to which the various areas of the vehicle are exposed to sunlight, thereby obtaining the respective areas of the vehicle corresponding to the current sun and the vehicle. The positional relationship and the compensation coefficient of the driving direction combine external environmental data and internal environmental data, and environmental factors such as heat dissipation outside the temperature are also considered as temperature compensation factors. Only a single-zone sunlight sensor is required to detect the sunlight intensity. Benchmark, the universal use of solar air conditioners that combines light intensity with temperature to achieve photovoltaic principles and photothermal principles, reducing the cost and complexity of multi-temperature zone automatic air conditioners.

The above as well as other objects, advantages and features of the present invention will become apparent to those skilled in the <

DRAWINGS

Some specific embodiments of the present invention are described in detail below by way of example, and not limitation. The same reference numbers in the drawings identify the same or similar parts. Those skilled in the art should understand that the drawings are not necessarily drawn to scale. The objects and features of the present invention will become more apparent in consideration of the following description in conjunction with the accompanying drawings.

1 is a flow chart of a temperature compensation method for a solar air conditioner for a vehicle according to an embodiment of the present invention;

2 is a flow chart for calculating solar radiation intensity according to an embodiment of the present invention;

3 is a block diagram of a temperature compensation system of a solar air conditioner for a vehicle according to an embodiment of the present invention.

detailed description

Referring to FIG. 1, an embodiment relates to a temperature compensation method for a solar air conditioner for a vehicle, comprising: (1) detecting a sun tilt angle, a time difference, a local solar time, a solar altitude angle and an azimuth angle, and a solar incident angle to calculate a position of the sun; (2) detecting the direct radiation intensity value of the solar radiation, the solar radiation scattering intensity value and the hourly temperature and humidity of the design day; (3) detecting the current longitude and latitude values of the vehicle and the current driving direction of the vehicle; (4) according to The relationship between the position of the sun and the latitude value of the vehicle and the longitude value of the sun position, determining the positional relationship between the sun and the vehicle; (5) calling in recent years according to the location of the vehicle and the season in which it is located The average meteorological data on the same day determines the outdoor environmental data; (6) calculates the multiple temperature compensation coefficients of the area where the vehicle is located according to the hourly temperature of the design day, the outdoor environmental data and the indoor environmental data, and stores them in the database; (7) Corresponding relationship between the driving direction of the vehicle, the positional relationship between the sun and the vehicle, and the temperature compensation coefficient of the region in which the vehicle is located Query the corresponding temperature compensation coefficient in the database; detect the sunlight intensity through a single-zone light intensity sensor; The functional relationship between the sunlight intensity and the temperature compensation coefficient is solar compensated for different regions of the vehicle as temperature compensation. The detection of the sun position includes longitude value detection and latitude value detection. The longitude value detection includes: obtaining the longitude value of the sun position corresponding to the current time according to the linear relationship of the solar longitude with the design day change. The latitude value detection includes: obtaining the latitude value of the sun position corresponding to the current date according to the linear relationship of the sun latitude and the design day change. The current longitude value and the latitude value of the vehicle are detected by the GPS positioning device to detect the current longitude value and the latitude value of the vehicle. Detecting the current driving direction of the vehicle includes determining a driving direction of the vehicle according to a change in a longitude value and a latitude value of the vehicle. Indoor environmental data includes: hourly heat input from the opaque enclosure of the car body, hourly heat transfer from the window glass, heat dissipation from the occupants, heat dissipation from the electrical equipment, and/or heat input from the fresh air ventilation system. Performing solar compensation for different regions of the vehicle as a function of the relationship between the sunlight intensity and the temperature compensation coefficient includes multiplying the sunlight intensity by the temperature compensation coefficient as a different region of the vehicle Temperature compensation value.

Solar radiant heat is external interference. The stronger the radiation, the worse the working time of the vehicle air conditioner, and the worse the environment is, the better the cooling meets the demand, and the difference in radiation intensity at different times of the day is relatively large, but the vehicle itself The adaptability to temperature is rapidly changing with the change of ambient temperature, which also leads to the difficulty of air conditioning work. Therefore, the general law of solar radiation must be accurate to make the most practical calculation for the compensation amount.

Wherein, the direct intensity of solar radiation received by any surface is related to the direct intensity received by the surface perpendicular to the solar ray and the cosine of the incident angle of the solar light, generally the product of the two, and the scattering intensity of the solar radiation is the sky scattered radiant intensity and The sum of the reflected radiation intensity of the ground, for the case of sky scattering, the difference in the effects of scattered radiation obtained in sunny and cloudy weather and rainy and snowy weather conditions is relatively large, and the same season presents a certain pattern, through experience and table look. Cross-validation, the angle between the surface of the vehicle and the horizontal plane should also be taken into consideration. At the same place at the same time, as long as the angle is the same, the faces of any orientation have the same sky radiation scattering. For ground reflection, it can be used. The product of the ground reflectivity and the sine of the solar height angle, and then give the weight coefficient considering the ground property. Generally, the ground reflection of the asphalt ground is small, and the uneven ground reflection on the ground is large.

The calculation of the position of the sun is the focus of this embodiment. In a specific implementation, the longitude value of the sun position at the current time may be obtained by storing the mapping relationship between the solar longitude value and the design date in a graph or a formula. The so-called design day indicates that the various outdoor design quantities used in calculating the temperature compensation amount of the air conditioning system are assumed values. According to the average meteorological data of a certain day in a certain place in recent years, this article is called the design date. When designing the weather conditions of the day, use the scientific method to sort out the measured actual data, and finally obtain the statistical value, instead of referring to the actual data of a certain day. In the schematic diagram of the correspondence between the longitude and the time of the sun in an embodiment of the present invention, the horizontal axis represents time, which may be specific to minutes, and the vertical axis represents solar longitude values. The solar longitude value is linear with the design day. When performing solar compensation, by detecting the design, for example, by detecting the system time from the in-vehicle system as the design time, and according to the linear mapping relationship information of the stored solar longitude with time, the sun position corresponding to the design day can be obtained. Longitude value. In a specific implementation, the latitude value of the sun position corresponding to the design date may also be obtained as follows: the mapping relationship between the solar latitude value and the time is stored in a chart or a formula. In the schematic diagram of the correspondence between the latitude and the date of the sun in the embodiment of the present invention, the horizontal axis represents the date, and the vertical axis represents the solar latitude value. The solar latitude value is linear with the design day. When performing solar compensation, by detecting the design date, for example, by detecting the system date from the in-vehicle system as the design date, and according to the linear mapping relationship information of the stored solar latitude and the date, the sun position corresponding to the design day can be obtained. Latitude value. It can be understood that the above method for obtaining the solar longitude value and the solar latitude value is only a method for acquiring the solar latitude and longitude position information. The location information of the sun can also be directly obtained through other methods, such as an in-vehicle system, through a network connection related application service. They are all within the scope of protection of the present invention.

For the calculation of the sun dip d, because of the angle between the axis of rotation of the earth and its revolving axis around the sun, this angle is the angle of the sun, that is, the angle between the sun's rays and the equatorial plane of the earth, using well-known The formula calculates the sun dip, ranging from -23.4 degrees to 23.4 degrees. Due to the uneven rotation of the Earth, the solar time is different from the time we usually say, and thus the design date. This time difference should be included in the calculation of the solar position. The local solar time has the following relationship with our usual Beijing time:

T=t+e+(L-120)/15, where t represents Beijing time, L is the longitude of the calculation place, and e represents the time difference mentioned above.

The calculation of the solar time angle H is: H = 15 * (t-12)

The solar elevation angle refers to the angle at which the direct ray of the incident ray of the sun deviates from its horizontal component. It is the sum of the sine sine of the calculated location and the sine of the calculated location and the sum of the sine cosine of the calculated location and the cosine of the calculated location. The azimuth of the sun refers to the azimuth of the horizontal projection of the sun's rays deviating from the south direction, and the product of the sine sine of the location and the sine of the calculated location and the quotient of the cosine of the calculated location and the cosine of the calculated location. The intensity of the incident angle of sunlight is related to the calculation of the direct sunlight intensity. The angle between the horizontal projection of the solar light and the normal of the body surface is n, a is the normal azimuth of the vehicle body, and the direct sunlight intensity is: I=I'cos a Cos n. It can be seen that the intensity of solar radiation received on any surface of any design day can be calculated. The calculation by computer software is simpler, and the parameters such as input time, location, and car orientation can be designed in the program. Calculate the required solar radiation intensity and other related data as the basis for the calculation of the temperature compensation value. The program flow for calculating the solar radiation intensity is shown in Figure 2.

When calculating the temperature compensation value and calculating the solar illumination, the dual effects of ambient temperature and solar radiation are generally considered. Therefore, in addition to the process of calculating the vehicle glass, the other two need to combine the above two items into one comprehensive temperature. External disturbance, the integrated temperature does not actually exist, is a hypothetical value that does not reflect any actual physical process, where the integrated temperature calculation formula is related to the air temperature inside and outside the vehicle, the surface absorption of radiation, the color of the body and the use Time, the convective heat transfer coefficient of the outer surface of the vehicle, the absorption rate of long-wave radiation on the outer surface of the automobile, the difference between the long-wave radiation emitted from the outer surface of the automobile and the long-wave radiation received, actually finding the relationship between these independent variables and the dependent variable It is still very difficult, so the vertical and horizontal planes are used as the two extreme light-receiving surfaces, and then a certain amount of radiation and temperature data are collected for dynamic fitting for similar processing.

The calculation of indoor environmental data includes: hourly incoming heat of the opaque enclosure, hourly heat transfer from the window glass, occupant heat dissipation, heat dissipation from the electrical equipment and/or heat input from the fresh air ventilation system. The non-transparent parts of the car body mainly include side panels, doors, ceilings and floors. According to steady state The theory is introduced to obtain the heat transfer area of the incoming heat and the envelope structure, and the indoor and outdoor temperature difference and the product of the integrated average heat transfer coefficient of a part of the envelope structure are proportional. We usually treat each face of the envelope as a vertical surface, and can not consider the part containing the glass. The area of the maintenance structure mainly considers the left and right sides and the door, including the inner and outer steel plates and the interior non-metal plates. And air gaps. The energy that is transmitted through the vehicle glass includes the heat that the glass transmits to the surrounding heat after radiant heat absorption causes its own temperature to rise, and the other part is the short-wave radiation heat that is directly transmitted into the vehicle interior. Therefore, it can be expressed as the heat of both, and the heat absorbed by the unit glass includes the product of the heat radiation absorbed per unit area and the direct absorption rate, and if the glass has strong scattering properties, it is related to the scattering absorption rate and the scattered radiation intensity. . Under the action of solar radiation, the temperature of the glass increases, and then the heat is transferred to the air outside the room, and the heat transfer process is assumed to be stable. The heat balance equation is constructed, and the heat per unit area is obtained according to the heat absorbed by the unit glass and the heat balance equation. Thereafter, according to the surface heat transfer convection coefficient, it is converted into a temperature compensation coefficient. For the calculation of occupant heat dissipation, because different human body dissipates calories, it is related to gender, height, weight, and wear. According to statistics, the empirical calculation table of cluster coefficient is obtained, including the number of occupants, gender, height range, weight range, and Cross-checklist of the nature of clothing (cotton, hemp, wool, silk, etc.). For the heat dissipation of electrical equipment, the total heat dissipated by the battery and the motor is considered according to the nature of the vehicle, and the empirical value of the heat dissipation of the electrical equipment is obtained by statistical methods. At present, the vehicle may need to install a fresh air system. The more fresh air volume is input, the better the interior environment of the vehicle, and the air conditioning temperature compensation disturbance of the car will follow. Therefore, the fresh air input load, the air leakage corresponding to the vehicle gap and the vehicle speed are taken as the air conditioning temperature. The independent variable of the compensation value is linearly fitted.

Take Lantian District of Shenzhen as an example. In summer, the ground temperature is 40 degrees Celsius, the air temperature is 32 degrees Celsius, the electric vehicle is 4 people, the fresh air volume is 40 cubic meters per hour, the design day is cloudy, and the atmospheric air density is 1.2kg/m ³ . After obtaining the heat load in the car, the comprehensive calculation temperature compensation coefficient is 1.2.

3 is a temperature compensation system frame of a solar air conditioner for a vehicle according to an embodiment of the present invention, including: a first detecting unit for detecting a sun tilt angle, a time difference, a local solar time, a solar altitude angle and an azimuth angle, and a solar incident angle Calculating the position of the sun; a second detecting unit for detecting the direct radiation intensity value of the solar radiation, the solar radiation scattering intensity value, and the hourly temperature and humidity of the design day; a unit for detecting a current longitude value and a latitude value of the vehicle and a current driving direction of the vehicle; and a determining unit determining the sun according to a magnitude relationship between a position of the sun and a latitude value of the vehicle and a longitude value of the sun position a positional relationship with the vehicle; the outdoor environment determining unit determines the outdoor environmental data according to the average weather data of the same day in the past few years according to the location and the season of the vehicle; the calculation unit is timed according to the design date The temperature, the outdoor environment data, and the indoor environmental data calculate a plurality of temperature compensation coefficients of the area where the vehicle is located, and are stored in the database; the control unit is configured to control the single-zone sunlight sensor to detect the sunlight intensity; and the compensation unit is configured to be used according to the vehicle The driving direction, the positional relationship between the sun and the vehicle, and the temperature compensation coefficient of the region in which the vehicle is located, query the corresponding temperature compensation coefficient in the database and according to the sunlight intensity and the temperature compensation coefficient Functional relationship to the different areas of the vehicle for solar compensation to achieve temperature Compensation.

The problem solved by the embodiment of the present invention is to adopt a better optimized temperature compensation method and system to overcome the uncertainty of the solar air conditioning temperature system of the vehicle, the multi-operating condition, the time-varying, and the multi-perturbation characteristics, and obtain the massive data. Based on the predictive compensation control strategy for compensation control, through simulation and real The operation situation shows that the control effect is better and the temperature compensation accuracy is obviously improved.

The present invention has been described with reference to the specific illustrative embodiments, and is not limited by the scope of the appended claims. It will be appreciated by those skilled in the art that the embodiments of the invention can be modified and modified without departing from the scope and spirit of the invention.

Claims

A temperature compensation method for a solar air conditioner for a vehicle, comprising:

(1) Detecting the sun's dip, the time difference, the local sun, the solar elevation and azimuth, and the angle of incidence of the sun to calculate the position of the sun;

(2) Detecting the direct radiation intensity value of the solar radiation, the solar radiation scattering intensity value, and the hourly temperature and humidity of the design day;

(3) detecting the current longitude and latitude values of the vehicle and the current driving direction of the vehicle;

(4) determining a positional relationship between the sun and the vehicle according to a magnitude relationship between a position of the sun and a latitude value of the vehicle and a longitude value of the sun position;

(5) Determine the outdoor environmental data by calling the average meteorological data of the same day in the past few years according to the location and season of the vehicle;

(6) Calculate multiple temperature compensation coefficients of the area where the vehicle is located according to the hourly temperature of the design day, the outdoor environment data and the indoor environmental data, and store them in the database;

(7) querying a corresponding temperature compensation coefficient in the database according to a driving direction of the vehicle, a positional relationship between the sun and the vehicle, and a temperature compensation coefficient of the vehicle region; and detecting by a single-zone light intensity sensor Sunlight intensity; sunlight compensation is performed on different areas of the vehicle as a function of temperature between the sunlight intensity and the temperature compensation coefficient.
The temperature compensation method for a solar air conditioner for a vehicle according to claim 1, wherein the detecting the sun position comprises longitude value detection and latitude value detection.
The temperature compensation method for a solar air conditioner for a vehicle according to claim 2, wherein the longitude value detection comprises: obtaining a longitude of a sun position corresponding to a current time according to a linear relationship of a solar longitude with a design day change value.
The temperature compensation method for a solar air conditioner for a vehicle according to claim 2, wherein the latitude value detection comprises: obtaining a latitude of a sun position corresponding to the current date according to a linear relationship of the sun latitude and the design day change value.
A temperature compensation method for a solar air conditioner for a vehicle according to claim 1, characterized in that The detecting the current longitude value and the latitude value of the vehicle includes: detecting, by the GPS positioning device, the current longitude value and the latitude value of the vehicle.
The temperature compensation method for a solar air conditioner for a vehicle according to claim 5, wherein the detecting the current driving direction of the vehicle comprises: judging a change according to a change in a longitude value and a latitude value of the vehicle The direction of travel of the vehicle.
The method for temperature compensation of a solar air conditioner for a vehicle according to claim 1, wherein the environmental data of the room comprises: hourly heat input of the opaque enclosure of the vehicle body, and hourly introduction of the window glass Heat, occupant heat dissipation, heat dissipation from electrical equipment and/or incoming heat from the fresh air ventilation system.
The temperature compensation method for a solar air conditioner for a vehicle according to claim 1, wherein the sunlight compensation is performed on different regions of the vehicle according to a relationship between the sunlight intensity and the temperature compensation coefficient. The sunlight intensity is multiplied by the temperature compensation coefficient as a temperature compensation value for different regions of the vehicle.
A temperature compensation system for a solar air conditioner for a vehicle using the method according to any one of claims 1-8, characterized by comprising: a first detecting unit for detecting a sun dip, a time difference, a local sun, and a sun Height angle and azimuth angle and sun incident angle to calculate the position of the sun; second detecting unit for detecting direct solar radiation intensity value, solar radiation scattering intensity value and hourly temperature and humidity of design day; third detecting unit, Detecting a current longitude value and a latitude value of the vehicle and a current driving direction of the vehicle; the determining unit determining the sun and the according to a magnitude relationship between a position of the sun and a latitude value of the vehicle and a longitude value of the sun position The positional relationship between the vehicles; the outdoor environment determining unit determines the outdoor environmental data according to the average weather data of the same day in the past few years according to the location and the season of the vehicle; the calculation unit, according to the hourly temperature of the design day, outdoor Environmental data and indoor environmental data to calculate multiple temperature compensation coefficients in the area where the vehicle is located, and a control unit for controlling a single-zone sunlight sensor for detecting sunlight intensity; a compensation unit for compensating for temperature according to a driving direction of the vehicle, a positional relationship between the sun and the vehicle, and a region in which the vehicle is located Corresponding relationship of coefficients, querying corresponding temperature compensation coefficients in the database and performing solar compensation on different regions of the vehicle according to a functional relationship between the sunlight intensity and the temperature compensation coefficient And achieve temperature compensation.