CN113002292A - Active air inlet grille control method and device, vehicle control unit and new energy automobile - Google Patents
Active air inlet grille control method and device, vehicle control unit and new energy automobile Download PDFInfo
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- CN113002292A CN113002292A CN202110309638.3A CN202110309638A CN113002292A CN 113002292 A CN113002292 A CN 113002292A CN 202110309638 A CN202110309638 A CN 202110309638A CN 113002292 A CN113002292 A CN 113002292A
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B60—VEHICLES IN GENERAL
- B60K—ARRANGEMENT OR MOUNTING OF PROPULSION UNITS OR OF TRANSMISSIONS IN VEHICLES; ARRANGEMENT OR MOUNTING OF PLURAL DIVERSE PRIME-MOVERS IN VEHICLES; AUXILIARY DRIVES FOR VEHICLES; INSTRUMENTATION OR DASHBOARDS FOR VEHICLES; ARRANGEMENTS IN CONNECTION WITH COOLING, AIR INTAKE, GAS EXHAUST OR FUEL SUPPLY OF PROPULSION UNITS IN VEHICLES
- B60K11/00—Arrangement in connection with cooling of propulsion units
- B60K11/08—Air inlets for cooling; Shutters or blinds therefor
- B60K11/085—Air inlets for cooling; Shutters or blinds therefor with adjustable shutters or blinds
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B60—VEHICLES IN GENERAL
- B60K—ARRANGEMENT OR MOUNTING OF PROPULSION UNITS OR OF TRANSMISSIONS IN VEHICLES; ARRANGEMENT OR MOUNTING OF PLURAL DIVERSE PRIME-MOVERS IN VEHICLES; AUXILIARY DRIVES FOR VEHICLES; INSTRUMENTATION OR DASHBOARDS FOR VEHICLES; ARRANGEMENTS IN CONNECTION WITH COOLING, AIR INTAKE, GAS EXHAUST OR FUEL SUPPLY OF PROPULSION UNITS IN VEHICLES
- B60K1/00—Arrangement or mounting of electrical propulsion units
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B60—VEHICLES IN GENERAL
- B60L—PROPULSION OF ELECTRICALLY-PROPELLED VEHICLES; SUPPLYING ELECTRIC POWER FOR AUXILIARY EQUIPMENT OF ELECTRICALLY-PROPELLED VEHICLES; ELECTRODYNAMIC BRAKE SYSTEMS FOR VEHICLES IN GENERAL; MAGNETIC SUSPENSION OR LEVITATION FOR VEHICLES; MONITORING OPERATING VARIABLES OF ELECTRICALLY-PROPELLED VEHICLES; ELECTRIC SAFETY DEVICES FOR ELECTRICALLY-PROPELLED VEHICLES
- B60L58/00—Methods or circuit arrangements for monitoring or controlling batteries or fuel cells, specially adapted for electric vehicles
- B60L58/10—Methods or circuit arrangements for monitoring or controlling batteries or fuel cells, specially adapted for electric vehicles for monitoring or controlling batteries
- B60L58/24—Methods or circuit arrangements for monitoring or controlling batteries or fuel cells, specially adapted for electric vehicles for monitoring or controlling batteries for controlling the temperature of batteries
- B60L58/26—Methods or circuit arrangements for monitoring or controlling batteries or fuel cells, specially adapted for electric vehicles for monitoring or controlling batteries for controlling the temperature of batteries by cooling
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B60—VEHICLES IN GENERAL
- B60R—VEHICLES, VEHICLE FITTINGS, OR VEHICLE PARTS, NOT OTHERWISE PROVIDED FOR
- B60R19/00—Wheel guards; Radiator guards, e.g. grilles; Obstruction removers; Fittings damping bouncing force in collisions
- B60R19/52—Radiator or grille guards ; Radiator grilles
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B60—VEHICLES IN GENERAL
- B60K—ARRANGEMENT OR MOUNTING OF PROPULSION UNITS OR OF TRANSMISSIONS IN VEHICLES; ARRANGEMENT OR MOUNTING OF PLURAL DIVERSE PRIME-MOVERS IN VEHICLES; AUXILIARY DRIVES FOR VEHICLES; INSTRUMENTATION OR DASHBOARDS FOR VEHICLES; ARRANGEMENTS IN CONNECTION WITH COOLING, AIR INTAKE, GAS EXHAUST OR FUEL SUPPLY OF PROPULSION UNITS IN VEHICLES
- B60K1/00—Arrangement or mounting of electrical propulsion units
- B60K2001/003—Arrangement or mounting of electrical propulsion units with means for cooling the electrical propulsion units
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- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
- Y02T—CLIMATE CHANGE MITIGATION TECHNOLOGIES RELATED TO TRANSPORTATION
- Y02T10/00—Road transport of goods or passengers
- Y02T10/60—Other road transportation technologies with climate change mitigation effect
- Y02T10/70—Energy storage systems for electromobility, e.g. batteries
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- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
- Y02T—CLIMATE CHANGE MITIGATION TECHNOLOGIES RELATED TO TRANSPORTATION
- Y02T10/00—Road transport of goods or passengers
- Y02T10/80—Technologies aiming to reduce greenhouse gasses emissions common to all road transportation technologies
- Y02T10/88—Optimized components or subsystems, e.g. lighting, actively controlled glasses
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- Engineering & Computer Science (AREA)
- Mechanical Engineering (AREA)
- Transportation (AREA)
- Chemical & Material Sciences (AREA)
- Combustion & Propulsion (AREA)
- Life Sciences & Earth Sciences (AREA)
- Sustainable Development (AREA)
- Sustainable Energy (AREA)
- Power Engineering (AREA)
- Air-Conditioning For Vehicles (AREA)
- Cooling, Air Intake And Gas Exhaust, And Fuel Tank Arrangements In Propulsion Units (AREA)
Abstract
The application discloses an active air inlet grille control method, an active air inlet grille control device, a vehicle control unit and a new energy automobile, wherein the method comprises the following steps: acquiring the actual speed of the new energy automobile, the actual pressure of an air conditioner pipeline and/or the actual temperature of at least one automobile part; matching the optimal air input according to the actual vehicle speed, the actual pressure and/or the actual temperature; and calculating a target opening and closing angle of the air inlet grille according to the optimal air inflow, and controlling the air inlet grille to execute air inlet action at the target opening and closing angle. Therefore, the problems that the air inlet grille in the related technology can only be passively controlled according to airflow, the opening and closing angle of the air inlet grille is accurately and relatively poor in control, the air inlet amount is unreasonable, the energy consumption is relatively high, the cruising economy of a vehicle and the use experience are relatively poor are solved.
Description
Technical Field
The application relates to the technical field of new energy automobiles, in particular to an active air intake grille control method and device of a new energy automobile, a vehicle control unit and the new energy automobile.
Background
In order to improve the endurance mileage, an active air inlet grille is usually installed on the current new energy automobile, and the working principle of the active air inlet grille is as follows: when the automobile runs, the air flow passes through the outer grille and the active air inlet grille in sequence, and the blades of the active air inlet grille control the opening and closing angle according to the air flow, so that the wind resistance is reduced, and the energy consumption is reduced.
However, the air intake grille in the related art can only be passively controlled according to the airflow, and the opening and closing angle of the air intake grille cannot be accurately controlled, so that the optimal air intake amount cannot be realized, the energy consumption loss is still large, the endurance economy of the vehicle is reduced, the use experience of a user is reduced, and a urgent need exists for solution.
Disclosure of Invention
The application provides a new energy automobile and an active air intake grille control method and device thereof, a vehicle control unit and the new energy automobile, and aims to solve the problems that the air intake grille in the related technology can only be passively controlled according to air flow, the opening and closing angle of the air intake grille is accurate and poor, the air intake amount is unreasonable, the energy consumption is large, the cruising economy of the automobile and the use experience are poor, and the like.
An embodiment of a first aspect of the application provides an active air intake grille control method for a new energy automobile, which includes the following steps: acquiring the actual speed of the new energy automobile, the actual pressure of an air conditioner pipeline and/or the actual temperature of at least one automobile part; matching the optimal air input according to the actual vehicle speed, the actual pressure and/or the actual temperature; and calculating a target opening and closing angle of the air inlet grille according to the optimal air inflow, and controlling the air inlet grille to execute air inlet action at the target opening and closing angle.
Further, the matching of the optimal intake air amount according to the actual vehicle speed, the actual pressure, and/or the actual temperature includes: and calculating the corresponding wind resistance under the actual vehicle speed according to a pre-stored relation table of the opening and closing angle of the air inlet grille and the wind resistance coefficient.
Further, the matching of the optimal intake air amount according to the actual vehicle speed, the actual pressure, and/or the actual temperature includes: and calculating the required air inflow of the new energy automobile according to the actual pressure.
Further, the matching of the optimal intake air amount according to the actual vehicle speed, the actual pressure, and/or the actual temperature includes: identifying a current temperature interval of the at least one automobile part according to the actual temperature; and calculating the current temperature switching threshold according to the current temperature interval.
Further, the actual temperature of the at least one automobile component includes one or more of a maximum temperature and a minimum temperature of the battery cells of the battery pack, an actual temperature of the driving motor, an actual temperature of the motor controller, an actual temperature of the DCDC converter, and an actual temperature of the charger.
The embodiment of the second aspect of the present application provides an active air intake grille control device of a new energy automobile, including: the acquisition module is used for acquiring the actual speed of the new energy automobile, the actual pressure of an air conditioner pipeline and/or the actual temperature of at least one automobile part; the matching module is used for matching the optimal air input according to the actual vehicle speed, the actual pressure and/or the actual temperature; and the control module is used for calculating a target opening and closing angle of the air inlet grille according to the optimal air inflow and controlling the air inlet grille to execute air inlet action at the target opening and closing angle.
Further, the matching module comprises: the first calculation unit is used for calculating the corresponding wind resistance under the actual vehicle speed according to a prestored relation table of the opening and closing angle of the air inlet grille and the wind resistance coefficient; the second calculating unit is used for calculating the required air inflow of the new energy automobile according to the actual pressure; and the third calculating unit is used for identifying the current temperature interval of the at least one automobile part according to the actual temperature and calculating the current temperature switching threshold according to the current temperature interval.
Further, the actual temperature of the at least one automobile component includes one or more of a maximum temperature and a minimum temperature of the battery cells of the battery pack, an actual temperature of the driving motor, an actual temperature of the motor controller, an actual temperature of the DCDC converter, and an actual temperature of the charger.
According to a third aspect of the application, a vehicle control unit is provided, which includes the active air intake grille control device of the new energy vehicle.
An embodiment of a fourth aspect of the application provides a new energy automobile, which includes the vehicle control unit.
According to the optimal air input, the opening and closing angle of the air inlet grille is actively and accurately controlled, the optimal air input is achieved through the reasonable opening and closing angle, the air resistance is effectively reduced while the control accuracy of the air inlet grille is improved, the energy consumption can be effectively reduced, the cruising economy of a vehicle is improved, and the use experience of a user is improved. Therefore, the problems that the air inlet grille in the related technology can only be passively controlled according to airflow, the opening and closing angle of the air inlet grille is accurately and relatively poor in control, the air inlet amount is unreasonable, the energy consumption is relatively high, the cruising economy of a vehicle and the use experience are relatively poor are solved.
Additional aspects and advantages of the present application 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 present application.
Drawings
The foregoing and/or additional aspects and advantages of the present application 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 schematic flowchart of an active grille shutter control method for a new energy vehicle according to an embodiment of the present application;
FIG. 2 is a schematic diagram of an active grille shutter control architecture provided in accordance with an embodiment of the present application;
fig. 3 is a schematic flowchart of an active grille shutter control method for a new energy vehicle according to an embodiment of the present application;
fig. 4 is a block diagram illustrating an active grille shutter control apparatus of a new energy vehicle according to an embodiment of the present application.
Detailed Description
Reference will now be made in detail to embodiments of the present application, 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 drawings are exemplary and intended to be used for explaining the present application and should not be construed as limiting the present application.
The following describes an active air intake grille control method and device, a vehicle control unit and a new energy vehicle of a new energy vehicle according to an embodiment of the present application with reference to the accompanying drawings. Aiming at the problems that the air inlet grille in the related technology mentioned in the background technology center can only be passively controlled according to the air flow, the opening and closing angle of the air inlet grille is controlled accurately and relatively poor, the air input is unreasonable, the energy consumption is large, the endurance economy and the use experience of the vehicle are relatively poor and the like, the active air inlet grille control method of the new energy automobile is provided, in the active air inlet grille control method, the opening and closing angle of the air inlet grille is actively and accurately controlled according to the optimal air input, the optimal air input is achieved through the reasonable opening and closing angle, the air inlet grille control accuracy is improved, meanwhile, the wind resistance is effectively reduced, the energy consumption can be effectively reduced, the endurance economy of the vehicle is improved, and the use experience. Therefore, the problems that the air inlet grille in the related technology can only be passively controlled according to airflow, the opening and closing angle of the air inlet grille is accurately and relatively poor in control, the air inlet amount is unreasonable, the energy consumption is relatively high, the cruising economy of a vehicle and the use experience are relatively poor are solved.
Specifically, fig. 1 is a schematic flowchart of an active grille shutter control method for a new energy vehicle according to an embodiment of the present application.
As shown in fig. 1, the active grille shutter control method for the new energy automobile comprises the following steps:
in step S101, an actual vehicle speed of the new energy vehicle, an actual pressure of the air conditioning pipeline, and/or an actual temperature of at least one vehicle component are collected.
The active air intake grille control method of the new energy automobile according to the embodiment of the application may be executed by a vehicle control unit. The active air inlet grille control method can be executed by the active air inlet grille control device, and the active air inlet grille control device can be configured in a vehicle control unit of any new energy automobile.
As shown in fig. 2, the vehicle control unit is connected to an Anti-lock Brake System (ABS) controller, so as to acquire an actual vehicle speed of the new energy vehicle through the ABS controller; the vehicle control unit is connected with the air conditioning system to collect the actual pressure of the air conditioning pipeline through the air conditioning system; the vehicle control unit is further connected with the vehicle components such as a battery system, a DCDC converter, a motor controller, a driving motor, an electric driving loop cooling water pump, a battery loop cooling water pump and a cooling fan, so that the actual temperature of at least one vehicle component can be acquired according to actual control requirements.
In this embodiment, the actual temperature of the at least one automobile part may include one or more of a maximum temperature and a minimum temperature of the battery cells of the battery pack, an actual temperature of the driving motor, an actual temperature of the motor controller, an actual temperature of the DCDC converter, and an actual temperature of the charger.
In step S102, the optimum intake air amount is matched according to the actual vehicle speed, the actual pressure, and/or the actual temperature.
It is understood that the embodiment of the present application may be matched in various ways to obtain the optimal intake air amount, and is not limited in particular herein.
As a possible implementation, matching the optimum intake air amount according to the actual vehicle speed, the actual pressure, and/or the actual temperature includes: and calculating the corresponding wind resistance under the actual vehicle speed according to a pre-stored relation table of the opening and closing angle of the air inlet grille and the wind resistance coefficient.
The prestored relation table can be calibrated according to experiments, for example, according to the embodiment of the application, the speed information of the ABS controller can be acquired through the vehicle control unit, wind resistance coefficients under different opening degrees can be obtained by utilizing wind tunnel tests and performance simulation, the influence of wind resistance of high and low vehicle speeds and the heat dissipation and cooling capacity can be balanced reasonably, and the opening degrees of the active air inlet grille under different vehicle speeds can be set.
As another possible implementation, matching the optimum intake air amount according to the actual vehicle speed, the actual pressure, and/or the actual temperature includes: and calculating the required air inflow of the new energy automobile according to the actual pressure.
According to the embodiment of the application, the pressure value of the pipeline pressure sensor of the air conditioning system can be collected through the vehicle control unit, the opening degree of the grating corresponding to the pipeline pressure at different vehicle speeds is reasonably set, and the influence on refrigeration or heat dissipation effects caused by overhigh pressure of the refrigeration system is avoided.
As another possible implementation, matching the optimum intake air amount according to the actual vehicle speed, the actual pressure, and/or the actual temperature includes: identifying a current temperature interval of at least one automobile part according to the actual temperature; and calculating the current temperature switching threshold according to the current temperature interval.
According to the embodiment of the application, the temperature of each key part can be collected through the vehicle control unit, the opening degree of the grating under different temperature thresholds is reasonably set, and the heat-insulating effect under the low-temperature condition is also optimized while the heat-dissipating and cooling capacity under the high-temperature condition is ensured.
In step S103, a target opening and closing angle of the intake grill is calculated based on the optimum intake air amount, and the intake grill is controlled to perform an intake operation at the target opening and closing angle.
It can be understood that, in the embodiment of the present application, a target opening and closing angle may be sent to the vehicle body controller to request the active intake grille to execute a certain opening, after receiving the target opening and closing angle, the vehicle body controller may forward information to the grille controller by using LIN communication, and the grille controller controls the grille to respond to the opening request and feed back the state in real time.
It should be noted that the vehicle control unit requests the active air intake grille to be fully opened when one or more of the following conditions are met, where the following conditions are:
(1) the power supply gear of the whole vehicle is in a power-off state;
(2) the active air inlet grille carries out alarm prompts such as overvoltage, undervoltage, overtemperature, stopper fault, locked rotor, electric appliance error and the like;
(3) the motor, the motor controller or the battery is over-temperature alarmed;
(4) the whole vehicle is in a gun inserting connection state;
(5) the electric drive loop and the battery loop water pump alarm for faults such as overvoltage, undervoltage and the like;
(6) the cooling fan gives out alarm for overvoltage, undervoltage, locked rotor and other faults;
(7) the pressure in the air-conditioning pipeline is overhigh;
(8) and (5) starting the remote air conditioner.
In conclusion, the opening and closing angle of the active air inlet grille is interactively controlled through the logic judgment request of the vehicle controller and LIN communication information of the vehicle body controller, so that the economic requirement of the whole vehicle can be met, and the wind resistance is reduced; the cooling requirements of key parts such as electric drive, a battery system, DCDC, a charger and the like in the charging state or the non-charging state of the whole vehicle are met; the heat dissipation requirement of a condenser after a refrigerating system is started in a charging state or a non-charging state of the whole vehicle is met, and the refrigerating or battery cooling effect of a passenger compartment is ensured; the economic benefits of balancing the working power of the cooling fan and the water pump and reducing the wind resistance are balanced, the active air inlet grille is reasonably selected, and the energy consumption loss is effectively reduced.
The active grille shutter control method for the new energy automobile is explained by a specific embodiment, as shown in fig. 3, the method comprises the following steps:
1) vehicle speed determination
According to the performance simulation and the wind tunnel test result, an active air inlet grille test opening degree and wind resistance coefficient table can be obtained. According to the wind resistance coefficients of different opening degrees, the wind resistance under different vehicle speeds and different grating opening degrees can be calculated. The low-speed wind resistance has small influence, so that the low-speed wind resistance can be set to be in a full-open state; since the influence of the high-speed wind resistance is large, the fully closed state can be set at a high speed.
2) Air conditioning system judgment
The vehicle control unit judges the required air inflow according to the pressure in the pipeline at different speeds by collecting the pressure value of the pressure sensor in the air conditioner pipeline, and controls the opening of the active air inlet grille.
3) Critical component temperature
The vehicle control unit adopts the highest temperature of the single body of the battery system, the lowest temperature of the single body, the motor temperature, the temperature of the motor controller, the DCDC temperature and the temperature of the charger, sets different temperature opening and closing thresholds corresponding to different opening degrees of the active air intake grille under the condition of ensuring the reasonable working temperature of each key part system.
According to the active air inlet grille control method of the new energy automobile, the opening and closing angle of the air inlet grille is actively and accurately controlled according to the optimal air inflow, the optimal air inflow is achieved through the reasonable opening and closing angle, the control accuracy of the air inlet grille is improved, meanwhile, the wind resistance is effectively reduced, the energy consumption can be effectively reduced, the cruising economy of the automobile is improved, and the use experience of a user is improved.
The active grille shutter control device of the new energy automobile is described next with reference to the accompanying drawings.
Fig. 4 is a block diagram schematically illustrating an active grille shutter control apparatus of a new energy vehicle according to an embodiment of the present application.
As shown in fig. 4, the active grille shutter control apparatus 10 of the new energy vehicle includes: acquisition module 100, matching module 200, and control module 300.
The acquisition module 100 is used for acquiring the actual speed of the new energy automobile, the actual pressure of an air conditioning pipeline and/or the actual temperature of at least one automobile part; the matching module 200 is used for matching the optimal air input according to the actual vehicle speed, the actual pressure and/or the actual temperature; the control module 300 is configured to calculate a target opening and closing angle of the intake grill according to the optimal intake air amount, and control the intake grill to perform an intake operation at the target opening and closing angle.
Further, the matching module 200 includes: the device comprises a first calculation unit, a second calculation unit and a third calculation unit. The first calculation unit is used for calculating the corresponding wind resistance under the actual vehicle speed according to a pre-stored relation table of the opening and closing angle of the air inlet grille and the wind resistance coefficient; the second calculating unit is used for calculating the required air inflow of the new energy automobile according to the actual pressure; and the third calculating unit is used for identifying the current temperature interval of at least one automobile part according to the actual temperature and calculating the current temperature switching threshold according to the current temperature interval.
Further, the actual temperature of the at least one vehicle component includes one or more of a maximum temperature and a minimum temperature of the battery cells of the battery pack, an actual temperature of the drive motor, an actual temperature of the motor controller, an actual temperature of the DCDC converter, and an actual temperature of the charger.
It should be noted that the foregoing explanation of the embodiment of the active grille shutter control method for a new energy vehicle also applies to the active grille shutter control device for a new energy vehicle of the embodiment, and details are not repeated here.
According to the active air inlet grille control device of the new energy automobile, the opening and closing angle of the air inlet grille is actively and accurately controlled according to the optimal air inflow, the optimal air inflow is achieved through the reasonable opening and closing angle, the control accuracy of the air inlet grille is improved, meanwhile, the wind resistance is effectively reduced, the energy consumption can be effectively reduced, the cruising economy of the automobile is improved, and the use experience of a user is improved.
In addition, the embodiment of the application also provides a vehicle control unit, which comprises the active air inlet grille control device of the new energy vehicle. This vehicle control unit is according to the initiative accurate control air intake grille opening and closing angle of optimal air input to reasonable opening and closing angle realizes the optimal air input, when improving air intake grille control accuracy, effectively reduces the windage, and then can effectively reduce the energy consumption, improves the continuation of the journey economic nature of vehicle, promotes user's use and experiences.
In addition, the embodiment of the application also provides a vehicle, and the vehicle comprises the vehicle control unit. This vehicle can be according to the initiative accurate control air intake grille opening and closing angle of optimal air input to reasonable opening and closing angle realizes the optimal air input, when improving air intake grille control accuracy, effectively reduces the windage, and then can effectively reduce the energy consumption, improves the continuation of the journey economic nature of vehicle, promotes user's use and experiences.
In the description herein, reference to the description of the term "one embodiment," "some embodiments," "an example," "a specific example," or "some examples," etc., means 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 application. In this specification, the schematic representations of the terms used above are not necessarily intended to 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 N embodiments or examples. Furthermore, various embodiments or examples and features of different embodiments or examples described in this specification can be combined and combined by one skilled in the art without contradiction.
Furthermore, the terms "first", "second" and "first" are used for descriptive purposes only and are not to be construed as indicating or implying relative importance or implicitly indicating the number of technical features indicated. Thus, a feature defined as "first" or "second" may explicitly or implicitly include at least one such feature. In the description of the present application, "N" means at least two, e.g., two, three, etc., unless specifically limited otherwise.
Any process or method descriptions in flow charts or otherwise described herein may be understood as representing modules, segments, or portions of code which include one or more N executable instructions for implementing steps of a custom logic function or process, and alternate implementations are included within the scope of the preferred embodiment of the present application in which functions may be executed out of order from that shown or discussed, including substantially concurrently or in reverse order, depending on the functionality involved, as would be understood by those reasonably skilled in the art of implementing the embodiments of the present application.
It should be understood that portions of the present application may be implemented in hardware, software, firmware, or a combination thereof. In the above embodiments, the N steps or methods may be implemented in software or firmware stored in a memory and executed by a suitable instruction execution system. If implemented in hardware, as in another embodiment, any one or combination of the following techniques, which are known in the art, may be used: a discrete logic circuit having a logic gate circuit for implementing a logic function on a data signal, an application specific integrated circuit having an appropriate combinational logic gate circuit, a Programmable Gate Array (PGA), a Field Programmable Gate Array (FPGA), or the like.
It will be understood by those skilled in the art that all or part of the steps carried by the method for implementing the above embodiments may be implemented by hardware related to instructions of a program, which may be stored in a computer readable storage medium, and when the program is executed, the program includes one or a combination of the steps of the method embodiments.
Claims (10)
1. The active air inlet grille control method of the new energy automobile is characterized by comprising the following steps of:
acquiring the actual speed of the new energy automobile, the actual pressure of an air conditioner pipeline and/or the actual temperature of at least one automobile part;
matching the optimal air input according to the actual vehicle speed, the actual pressure and/or the actual temperature; and
and calculating a target opening and closing angle of the air inlet grille according to the optimal air inflow, and controlling the air inlet grille to execute air inlet action at the target opening and closing angle.
2. The method according to claim 1, wherein said matching an optimum intake air amount according to the actual vehicle speed, the actual pressure, and/or the actual temperature includes:
and calculating the corresponding wind resistance under the actual vehicle speed according to a pre-stored relation table of the opening and closing angle of the air inlet grille and the wind resistance coefficient.
3. The method according to claim 1, wherein said matching an optimum intake air amount according to the actual vehicle speed, the actual pressure, and/or the actual temperature includes:
and calculating the required air inflow of the new energy automobile according to the actual pressure.
4. The method according to claim 1, wherein said matching an optimum intake air amount according to the actual vehicle speed, the actual pressure, and/or the actual temperature includes:
identifying a current temperature interval of the at least one automobile part according to the actual temperature;
and calculating the current temperature switching threshold according to the current temperature interval.
5. The method according to any one of claims 1 to 4, wherein the actual temperature of the at least one vehicle component comprises one or more of a maximum temperature and a minimum temperature of a battery cell of the battery pack, an actual temperature of the drive motor, an actual temperature of the motor controller, an actual temperature of the DCDC converter and an actual temperature of the charger.
6. An active air intake grille control device of a new energy automobile is characterized by comprising:
the acquisition module is used for acquiring the actual speed of the new energy automobile, the actual pressure of an air conditioner pipeline and/or the actual temperature of at least one automobile part;
the matching module is used for matching the optimal air input according to the actual vehicle speed, the actual pressure and/or the actual temperature; and
and the control module is used for calculating a target opening and closing angle of the air inlet grille according to the optimal air inflow and controlling the air inlet grille to execute air inlet action at the target opening and closing angle.
7. The apparatus of claim 6, wherein the matching module comprises:
the first calculation unit is used for calculating the corresponding wind resistance under the actual vehicle speed according to a prestored relation table of the opening and closing angle of the air inlet grille and the wind resistance coefficient;
the second calculating unit is used for calculating the required air inflow of the new energy automobile according to the actual pressure;
and the third calculating unit is used for identifying the current temperature interval of the at least one automobile part according to the actual temperature and calculating the current temperature switching threshold according to the current temperature interval.
8. The apparatus of any one of claims 6-7, wherein the actual temperature of the at least one vehicle component comprises one or more of a maximum temperature and a minimum temperature of a cell of the battery pack, an actual temperature of the drive motor, an actual temperature of the motor controller, an actual temperature of the DCDC converter, and an actual temperature of the charger.
9. A vehicle control unit, characterized by comprising the active air intake grille control device of the new energy automobile according to any one of claims 6-8.
10. A new energy automobile, characterized by comprising the vehicle control unit according to claim 9.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202110309638.3A CN113002292A (en) | 2021-03-23 | 2021-03-23 | Active air inlet grille control method and device, vehicle control unit and new energy automobile |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
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| CN114274764A (en) * | 2021-12-15 | 2022-04-05 | 东风汽车集团股份有限公司 | Control method, device and equipment of air inlet grille blade and readable storage medium |
| CN114312286A (en) * | 2021-12-02 | 2022-04-12 | 武汉格罗夫氢能汽车有限公司 | Active grille control method, storage medium and intelligent terminal |
| CN116353334A (en) * | 2023-06-01 | 2023-06-30 | 常州市佳乐车辆配件制造有限公司 | Intelligent grid control system applicable to various vehicle types |
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