CN112590491A - Control method for vehicle air conditioning system and vehicle - Google Patents
Control method for vehicle air conditioning system and vehicle Download PDFInfo
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- CN112590491A CN112590491A CN202011403799.0A CN202011403799A CN112590491A CN 112590491 A CN112590491 A CN 112590491A CN 202011403799 A CN202011403799 A CN 202011403799A CN 112590491 A CN112590491 A CN 112590491A
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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
- B60H1/00642—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
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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
- B60H1/00642—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
- B60H1/00764—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 the input being a vehicle driving condition, e.g. speed
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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
- B60H1/00642—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
- B60H1/00835—Damper doors, e.g. position control
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- Physics & Mathematics (AREA)
- Thermal Sciences (AREA)
- Engineering & Computer Science (AREA)
- Mechanical Engineering (AREA)
- Air-Conditioning For Vehicles (AREA)
Abstract
The invention discloses a control method for a vehicle air conditioning system and a vehicle, wherein the air conditioning system comprises the following steps: the air inlet duct is provided with an air inlet and an air outlet communicated with the cab; an air door is arranged at the air inlet and is suitable for adjusting the proportion of the airflow flow of the internal circulation air channel and the airflow flow of the external circulation air channel in the air inlet, and a blower is arranged in the air inlet air channel; the control method for the vehicle air conditioning system includes: detecting the vehicle speed and/or the working state of a blower; the air door adjusts the proportion of the air flow of the internal circulation air to the air flow of the external circulation air in the air inlet according to the vehicle speed and/or the working state of the air blower. According to the control method for the vehicle air conditioning system, the vehicle speed and/or the working state of the blower are/is detected, and the air door is controlled according to the working state to adjust the flow ratio of the internal circulation air flow and the external circulation air flow in the air inlet, so that the heating effect in winter is further improved, and cold air is prevented from entering a cab.
Description
Technical Field
The invention relates to the field of vehicles, in particular to a control method for a vehicle air conditioning system and a vehicle.
Background
In the related art, most of the air conditioning systems of vehicles on the market adopt an external circulation control method in winter, and the heating effect is poor because the ambient temperature is low, which causes a large cooling load of the system. Partial vehicle air conditioning system adopts partial internal circulation in winter, and under high-speed operating mode, there is cold wind and gets into passenger cabin through the internal circulation wind gap from the extrinsic cycle wind gap, influences driver's driving experience.
Disclosure of Invention
The present invention is directed to solving at least one of the problems of the prior art. Therefore, an object of the present invention is to provide a control method for a vehicle air conditioning system, which can further improve the heating effect in winter and prevent cold air from entering a cab by detecting the vehicle speed and/or the working state of a blower and controlling a damper to adjust the ratio of the air flow rates of the internal circulation air and the external circulation air in an air inlet according to the working state.
The invention also provides a vehicle with the air conditioning system.
According to a control method for a vehicle air conditioning system of the present invention, the air conditioning system includes: the air inlet duct is provided with an air inlet and an air outlet communicated with the cab, the air inlet is respectively communicated with an internal circulation duct and an external circulation duct, the internal circulation duct conducts the air inlet with the cab, and the external circulation duct conducts the air inlet with the outside; the air inlet is provided with an air door, the air door is suitable for adjusting the proportion of the airflow flow of the internal circulation air channel to the airflow flow of the external circulation air channel in the air inlet, and an air blower is arranged in the air inlet air channel; the control method for the vehicle air conditioning system includes: detecting the speed of the vehicle and/or the working state of the air blower; and the air door adjusts the ratio of the air flow of the internal circulation air to the air flow of the external circulation air in the air inlet according to the vehicle speed and/or the working state of the air blower.
According to the control method for the vehicle air conditioning system, the vehicle speed and/or the working state of the blower are/is detected, and the air door is controlled according to the working state to adjust the flow ratio of the internal circulation air flow and the external circulation air flow in the air inlet, so that the heating effect in winter is further improved, and cold air is prevented from entering a cab.
According to an embodiment of the invention, if the vehicle speed is not greater than a first preset vehicle speed V1 and the operating voltage of the blower is not less than a preset voltage, the damper is switched to a preset position to adjust the ratio of the internal circulation air to the external circulation air in the air inlet to a preset ratio.
According to one embodiment of the invention, the first preset vehicle speed V1 satisfies: v1 is more than or equal to 45km/h and less than or equal to 55 km/h.
According to one embodiment of the invention, the highest gear voltage of the blower is U1, the gear number of the blower is N, the preset voltage is U2, and U2 is U1 × 3/N.
According to an embodiment of the invention, the flow rate of the internal circulation air flow in the air inlet is Q1, the flow rate of the external circulation air flow is Q2, the preset proportion is adjustable, and the preset proportion satisfies the following conditions: 2/7 is less than or equal to Q1/Q2 is less than or equal to 4/7.
According to one embodiment of the invention, when the vehicle speed is not less than a second preset vehicle speed V2 or the working voltage of the blower is less than the preset voltage, the damper is switched to close the internal circulation air duct, and the internal circulation air flow rate is 0.
According to one embodiment of the invention, the second preset vehicle speed V2 satisfies: v2 is more than 55km/h and less than or equal to 65 km/h.
According to an embodiment of the present invention, the control method further includes: and if the vehicle speed is greater than a first preset vehicle speed V1 and less than a second preset vehicle speed V2, the air door enters a return difference control mode, and the position of the air door in the return difference control mode is kept in the return difference control mode.
According to one embodiment of the present invention, before the damper is adjusted in position according to the vehicle speed and/or the blower operating state, the method further comprises: and detecting the ambient temperature of the vehicle, and if the ambient temperature is less than the preset temperature, allowing the air door to be adjusted.
The vehicle according to the present invention is briefly described below.
According to the air conditioning system provided by the embodiment of the invention, the vehicle is provided with the air conditioning system provided by the embodiment of the invention, and the air conditioning system adopts the control method, so that the vehicle can detect the vehicle speed and/or the working state of the air blower under the low-temperature working condition, and control the air door to adjust the ratio of the air flow of the internal circulation air to the air flow of the external circulation air in the air inlet according to the working state, so that the heating effect in winter is further improved, cold air is prevented from entering a cab, the normal driving of a driver is prevented from being influenced, and the driving experience of the driver is further improved.
Additional aspects and advantages of the invention will be set forth in part in the description which follows and, in part, will be obvious from the description, or may be learned by practice of the invention.
Drawings
The above and/or additional aspects and advantages of the present invention will become apparent and readily appreciated from the following description of the embodiments, taken in conjunction with the accompanying drawings of which:
FIG. 1 is a flow chart of a control method according to an embodiment of the invention;
FIG. 2 is a schematic diagram of a damper controller according to an embodiment of the invention.
Reference numerals:
the first connecting end 1, the second connecting end 2, the third connecting end 3, the fourth connecting end 4 and the fifth connecting end 5.
Detailed Description
Reference will now be made in detail to embodiments of the present invention, examples of which are illustrated in the accompanying drawings, wherein like or similar reference numerals refer to the same or similar elements or elements having the same or similar function throughout. The embodiments described below with reference to the accompanying drawings are illustrative only for the purpose of explaining the present invention, and are not to be construed as limiting the present invention.
A control method for a vehicle air conditioning system according to an embodiment of the present invention is described below with reference to fig. 1, the air conditioning system including: the air inlet channel is provided with an air inlet and an air outlet communicated with the cab, the air inlet is respectively communicated with the internal circulation air channel and the external circulation air channel, the internal circulation air channel conducts the air inlet with the cab, and the external circulation air channel conducts the air inlet with the outside; an air door is arranged at the air inlet and is suitable for adjusting the proportion of the airflow flow of the internal circulation air channel and the airflow flow of the external circulation air channel in the air inlet, and a blower is arranged in the air inlet air channel; the control method for the vehicle air conditioning system includes: detecting the vehicle speed and/or the working state of a blower; the air door adjusts the proportion of the air flow of the internal circulation air to the air flow of the external circulation air in the air inlet according to the vehicle speed and/or the working state of the air blower.
In the related art, most of the air conditioning systems of vehicles on the market adopt an external circulation control method in winter, and the heating effect is poor because the ambient temperature is low, which causes a large cooling load of the system. Partial vehicle air conditioning system adopts partial internal circulation in winter, and under high-speed operating mode, there is cold wind and gets into passenger cabin through the internal circulation wind gap from the extrinsic cycle wind gap, influences driver's driving experience.
Specifically, the external air can enter the air inlet of the air inlet channel from the external circulation air channel, and pass through the air door along the air inlet channel to flow to the cab from the air outlet, and the air inside the vehicle can enter the internal circulation air channel from the cab and circulate to the air door along the internal circulation air channel.
The air door can adjust the proportion of the air flow of the internal circulation air duct in the air inlet to the air flow of the external circulation air duct. The air inlet duct can be internally provided with an air blower which can synchronously guide the air flow of the internal circulation duct and the air flow of the external circulation duct to the cab, and the air inlet duct is internally provided with an air treatment device, such as a heater, a heat exchanger and the like, so as to be suitable for treating the air flow entering the cab.
The control method comprises the steps of firstly detecting the speed of a vehicle and/or the working state of a blower, and adjusting the position of an air door by judging the speed of the vehicle and/or the working state of the blower, wherein the air door is used for adjusting the ratio of the flow of an internal circulation air flow to the flow of an external circulation air flow in an air inlet, so that the heating effect of the vehicle air conditioner is improved.
In short, the control method further improves the heating effect in winter and prevents cold air from entering the cab by detecting the speed of the vehicle and/or the working state of the blower and controlling the air door to adjust the flow ratio of the air flow of the internal circulation air and the external circulation air in the air inlet according to the working state.
According to one embodiment of the invention, when the current vehicle speed is not greater than the first preset vehicle speed V1 and the working voltage of the blower is not less than the preset voltage, the air door is switched to the preset position, and the ratio of the internal circulation air to the external circulation air in the air inlet is adjusted to be the preset ratio. In the above working condition, the vehicle is in the low-speed working condition, and when the working voltage of the air blower is larger, the air blower has strong suction capacity to the air flow, the air flow in the external circulation air duct can be effectively sucked into the air inlet air duct, the air flow in the external circulation air duct can be ensured to enter the internal circulation air duct, and the external circulation air flow is prevented from directly entering the cab without being heated.
The air enters the air inlet duct after the internal circulation air and the external circulation air are mixed, so that the temperature of air flow entering the air inlet duct can be increased, the temperature of air entering the cab after passing through the air inlet duct is increased, the temperature condition of the air entering the cab is greatly improved, and the energy consumption of an air conditioning system in a vehicle is reduced.
In one embodiment of the invention, the first preset vehicle speed V1 may be set between 45km/h and 55 km/h.
In an embodiment of the present invention, the maximum gear voltage of the blower may be U1, the number of gear positions of the blower may be N, the preset voltage may be U2, and the calculation formula of the preset voltage may be U2 — U1 × 3/N, where N is greater than 3.
In an embodiment of the invention, the flow rate of the internal circulation air flow in the air inlet can be Q1, the flow rate of the external circulation air flow can be Q2, and the preset proportion can meet the requirement that 2/7 is equal to or greater than Q1/Q2 is equal to or less than 4/7. After the air door moves to the preset position, the air door controls the opening degree between the internal circulation air channel and the external circulation air channel so as to control the air flow proportion of the internal circulation air and the external circulation air entering the air inlet channel. It is to be explained here that the damper controller may be used to control the opening of the damper, and the damper controller may be configured as a sliding resistor to effect control of the ratio of inner to outer circulation.
Specifically, as shown in fig. 2, the damper controller includes a first connection end 1 and a second connection end 2, the first connection end 1 and the second connection end 2 are connected to a power supply, the damper controller further includes a third connection end 3, a fourth connection end 4 and a fifth connection end 5, the third connection end 3 and the fifth connection end 5 are respectively connected to an anode of a motor-driven slip sheet of the damper and a cathode of the motor-driven slip sheet of the damper, a resistance coil is connected between the third connection end 3 and the fifth connection end 5, the fourth connection end 4 is connected to the motor-driven slip sheet of the damper, and the fourth connection end 4 can be selectively connected to any position on the resistance coil to adjust the preset ratio.
According to one embodiment of the invention, when the current vehicle speed is not less than the second preset vehicle speed V2, the damper can be switched to close the internal circulation air duct, so that the internal circulation air flow rate is 0. When the speed of a motor vehicle is too fast, the entering amount of external cold air is large, the flow speed is high, the blower cannot completely pump the cold air in the external circulation air duct into the air inlet air duct, and partial cold air in the external circulation air duct enters the cab through the internal circulation air duct, so that the temperature of the cab is reduced. Therefore, the internal circulation air duct is closed when the vehicle speed exceeds a second preset vehicle speed, the second vehicle speed is a preset value and can be calibrated according to the vehicle speed of the vehicle, the temperature of the external environment and the shape and practicability of the vehicle, and the range of the second preset vehicle speed can be 55km/h-65 km/h.
In another embodiment of the present invention, when the operating voltage of the blower is lower than the preset voltage U2, the damper may also be switched to close the internal circulation air duct, so as to prevent the blower from having a weak suction capability when the operating voltage is low and being unable to completely draw the air flow in the external circulation air duct into the air inlet air duct.
In one embodiment of the invention, the second preset vehicle speed V2 may be set between 55km/h and 65 km/h.
According to an embodiment of the present invention, the control method of the air conditioning system may further include a return difference control mode. When the vehicle speed is greater than the first preset vehicle speed V1 and less than the second preset vehicle speed V2, the damper may enter a return difference control mode. When the vehicle air conditioning system is in the return difference control mode, the damper may continue to maintain the position of the air conditioning system when it enters the return difference control mode. The control method can prevent frequent switching of the air doors of the inner circulation and the outer circulation caused by repeated change of the vehicle speed, and the return difference control mode can perfect the control of the air doors of the vehicle air conditioning system under the condition of the change of the vehicle speed, reduce the switching frequency of the air doors and improve the stability of the control method of the vehicle air conditioning system.
According to one embodiment of the invention, the damper may also sense the ambient temperature of the vehicle prior to adjusting the position based on vehicle speed and/or blower operating conditions. The air conditioning system may further include an air conditioning controller, which may collect a vehicle outside temperature, and may allow the damper to be adjusted when the ambient temperature is less than a preset temperature. In an embodiment of the present invention, the control method for the vehicle air conditioning system is mainly applied in winter, the ambient temperature T in winter can be set between 15 ℃ and-15 ℃, and the steps in the embodiment of the present invention are performed after the temperature is detected, so as to improve the use effect of the vehicle air conditioning system in winter, reduce the energy consumed during air conditioning heating, and prolong the driving mileage of the vehicle.
The vehicle according to the present invention is briefly described below.
According to the air conditioning system provided by the embodiment of the invention, the vehicle is provided with the air conditioning system provided by the embodiment of the invention, and the air conditioning system adopts the control method, so that the vehicle can detect the vehicle speed and/or the working state of the air blower under the low-temperature working condition, and control the air door to adjust the ratio of the air flow of the internal circulation air to the air flow of the external circulation air in the air inlet according to the working state, so that the heating effect in winter is further improved, cold air is prevented from entering a cab, the normal driving of a driver is prevented from being influenced, and the driving experience of the driver is further improved.
In the description of the present invention, it is to be understood that the terms "central," "longitudinal," "lateral," "length," "width," "thickness," "upper," "lower," "front," "rear," "left," "right," "vertical," "horizontal," "top," "bottom," "inner," "outer," "clockwise," "counterclockwise," "axial," "radial," "circumferential," and the like are used in the orientations and positional relationships indicated in the drawings for convenience in describing the invention and to simplify the description, and are not intended to indicate or imply that the referenced device or element must have a particular orientation, be constructed and operated in a particular orientation, and are not to be considered limiting of the invention.
In the description of the present invention, "the first feature" and "the second feature" may include one or more of the features.
In the description of the present invention, "a plurality" means two or more.
In the description of the present invention, the first feature being "on" or "under" the second feature may include the first and second features being in direct contact, and may also include the first and second features being in contact with each other not directly but through another feature therebetween.
In the description of the invention, "above", "over" and "above" a first feature in a second feature includes the first feature being directly above and obliquely above the second feature, or simply means that the first feature is higher in level than the second feature.
In the description herein, references to the description of the term "one embodiment," "some embodiments," "an illustrative embodiment," "an example," "a specific example," or "some examples" or the like mean that a particular feature, structure, material, or characteristic described in connection with the embodiment or example is included in at least one embodiment or example of the invention. In this specification, the schematic representations of the terms used above do not necessarily refer to the same embodiment or example. Furthermore, the particular features, structures, materials, or characteristics described may be combined in any suitable manner in any one or more embodiments or examples.
While embodiments of the invention have been shown and described, it will be understood by those of ordinary skill in the art that: various changes, modifications, substitutions and alterations can be made to the embodiments without departing from the principles and spirit of the invention, the scope of which is defined by the claims and their equivalents.
Claims (10)
1. A control method for a vehicle air conditioning system, the air conditioning system comprising: the air inlet duct is provided with an air inlet and an air outlet communicated with the cab, the air inlet is respectively communicated with an internal circulation duct and an external circulation duct, the internal circulation duct conducts the air inlet with the cab, and the external circulation duct conducts the air inlet with the outside; the air inlet is provided with an air door, the air door is suitable for adjusting the proportion of the airflow flow of the internal circulation air channel to the airflow flow of the external circulation air channel in the air inlet, and an air blower is arranged in the air inlet air channel; characterized in that the control method for the vehicle air conditioning system comprises:
detecting the speed of the vehicle and/or the working state of the air blower;
and the air door adjusts the ratio of the air flow of the internal circulation air to the air flow of the external circulation air in the air inlet according to the vehicle speed and/or the working state of the air blower.
2. The control method for the vehicle air conditioning system according to claim 1, wherein if the vehicle speed is not greater than a first preset vehicle speed V1 and the operating voltage of the blower is not less than a preset voltage, the damper is switched to a preset position to adjust the ratio of the internal circulation air to the external circulation air in the air inlet to a preset ratio.
3. The control method for a vehicle air conditioning system according to claim 2, characterized in that the first preset vehicle speed V1 satisfies: v1 is more than or equal to 45km/h and less than or equal to 55 km/h.
4. The control method for a vehicle air conditioning system according to claim 2, wherein the blower maximum gear voltage is U1, the number of gears of the blower is N, the preset voltage is U2, and U2 is U1 × 3/N.
5. The control method for the air conditioning system of the vehicle as claimed in claim 2, wherein the flow rate of the internal circulation air flow in the air inlet is Q1, the flow rate of the external circulation air flow is Q2, the preset ratio is adjustable, and the preset ratio satisfies: 2/7 is less than or equal to Q1/Q2 is less than or equal to 4/7.
6. The control method for the vehicle air conditioning system according to claim 2, wherein when the vehicle speed is not less than a second preset vehicle speed V2 or the operating voltage of the blower is less than the preset voltage, the damper is switched to close the internal circulation duct, and the flow rate of the internal circulation air flow is 0.
7. The control method for a vehicle air conditioning system according to claim 6, characterized in that the second preset vehicle speed V2 satisfies: v2 is more than 55km/h and less than or equal to 65 km/h.
8. The control method for a vehicle air conditioning system according to claim 7, characterized by further comprising: and if the vehicle speed is greater than a first preset vehicle speed V1 and less than a second preset vehicle speed V2, the air door enters a return difference control mode, and the position of the air door in the return difference control mode is kept in the return difference control mode.
9. The control method for a vehicle air conditioning system according to any one of claims 1 to 8, characterized in that before the damper is adjusted in position according to the vehicle speed and/or the blower operating state, it further includes:
and detecting the ambient temperature of the vehicle, and if the ambient temperature is less than the preset temperature, allowing the air door to be adjusted.
10. A vehicle, characterized by comprising: an air conditioning system employing the control method for a vehicle air conditioning system according to any one of claims 1 to 9.
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| Application Number | Priority Date | Filing Date | Title |
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| CN202011403799.0A CN112590491A (en) | 2020-12-02 | 2020-12-02 | Control method for vehicle air conditioning system and vehicle |
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| Application Number | Priority Date | Filing Date | Title |
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| CN202011403799.0A CN112590491A (en) | 2020-12-02 | 2020-12-02 | Control method for vehicle air conditioning system and vehicle |
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| CN112590491A true CN112590491A (en) | 2021-04-02 |
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| CN202011403799.0A Pending CN112590491A (en) | 2020-12-02 | 2020-12-02 | Control method for vehicle air conditioning system and vehicle |
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN113581160A (en) * | 2021-08-27 | 2021-11-02 | 恒大恒驰新能源汽车研究院(上海)有限公司 | Vehicle control method and device and electronic equipment |
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| CN108749509A (en) * | 2018-04-23 | 2018-11-06 | 重庆长安汽车股份有限公司 | The method for promoting air conditioning for automobiles heating performance |
| CN110239310A (en) * | 2019-06-18 | 2019-09-17 | 浙江吉利控股集团有限公司 | A kind of self-adaptation control method and its device based on air conditioning for automobiles closed state |
| CN111284295A (en) * | 2020-03-10 | 2020-06-16 | 长城汽车股份有限公司 | Method for operating air conditioning system for vehicle |
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Patent Citations (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN108749509A (en) * | 2018-04-23 | 2018-11-06 | 重庆长安汽车股份有限公司 | The method for promoting air conditioning for automobiles heating performance |
| CN110239310A (en) * | 2019-06-18 | 2019-09-17 | 浙江吉利控股集团有限公司 | A kind of self-adaptation control method and its device based on air conditioning for automobiles closed state |
| CN111284295A (en) * | 2020-03-10 | 2020-06-16 | 长城汽车股份有限公司 | Method for operating air conditioning system for vehicle |
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| Publication number | Priority date | Publication date | Assignee | Title |
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| CN113581160A (en) * | 2021-08-27 | 2021-11-02 | 恒大恒驰新能源汽车研究院(上海)有限公司 | Vehicle control method and device and electronic equipment |
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