CN112937289B - Device for utilizing automobile windward resistance to change power - Google Patents

Device for utilizing automobile windward resistance to change power Download PDF

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Publication number
CN112937289B
CN112937289B CN202110315837.5A CN202110315837A CN112937289B CN 112937289 B CN112937289 B CN 112937289B CN 202110315837 A CN202110315837 A CN 202110315837A CN 112937289 B CN112937289 B CN 112937289B
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Prior art keywords
automobile
air inlet
fan
air outlet
grille
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CN112937289A (en
Inventor
杨子明
郝慧荣
张慧杰
高志鹰
周冬
侯振煜
张行
曹艳壮
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Inner Mongolia University of Technology
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Inner Mongolia University of Technology
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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
    • B60K16/00—Arrangements in connection with power supply of propulsion units in vehicles from forces of nature, e.g. sun or wind
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F03—MACHINES OR ENGINES FOR LIQUIDS; WIND, SPRING, OR WEIGHT MOTORS; PRODUCING MECHANICAL POWER OR A REACTIVE PROPULSIVE THRUST, NOT OTHERWISE PROVIDED FOR
    • F03D—WIND MOTORS
    • F03D9/00—Adaptations of wind motors for special use; Combinations of wind motors with apparatus driven thereby; Wind motors specially adapted for installation in particular locations
    • F03D9/10—Combinations of wind motors with apparatus storing energy
    • F03D9/11—Combinations of wind motors with apparatus storing energy storing electrical energy
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F03—MACHINES OR ENGINES FOR LIQUIDS; WIND, SPRING, OR WEIGHT MOTORS; PRODUCING MECHANICAL POWER OR A REACTIVE PROPULSIVE THRUST, NOT OTHERWISE PROVIDED FOR
    • F03D—WIND MOTORS
    • F03D9/00—Adaptations of wind motors for special use; Combinations of wind motors with apparatus driven thereby; Wind motors specially adapted for installation in particular locations
    • F03D9/20—Wind motors characterised by the driven apparatus
    • F03D9/25—Wind motors characterised by the driven apparatus the apparatus being an electrical generator
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F03—MACHINES OR ENGINES FOR LIQUIDS; WIND, SPRING, OR WEIGHT MOTORS; PRODUCING MECHANICAL POWER OR A REACTIVE PROPULSIVE THRUST, NOT OTHERWISE PROVIDED FOR
    • F03D—WIND MOTORS
    • F03D9/00—Adaptations of wind motors for special use; Combinations of wind motors with apparatus driven thereby; Wind motors specially adapted for installation in particular locations
    • F03D9/30—Wind motors specially adapted for installation in particular locations
    • F03D9/32—Wind motors specially adapted for installation in particular locations on moving objects, e.g. vehicles
    • 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
    • B60K16/00—Arrangements in connection with power supply of propulsion units in vehicles from forces of nature, e.g. sun or wind
    • B60K2016/006—Arrangements in connection with power supply of propulsion units in vehicles from forces of nature, e.g. sun or wind wind power driven
    • 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
    • Y02E—REDUCTION OF GREENHOUSE GAS [GHG] EMISSIONS, RELATED TO ENERGY GENERATION, TRANSMISSION OR DISTRIBUTION
    • Y02E10/00—Energy generation through renewable energy sources
    • Y02E10/70—Wind energy
    • Y02E10/72—Wind turbines with rotation axis in wind direction
    • 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
    • Y02E—REDUCTION OF GREENHOUSE GAS [GHG] EMISSIONS, RELATED TO ENERGY GENERATION, TRANSMISSION OR DISTRIBUTION
    • Y02E10/00—Energy generation through renewable energy sources
    • Y02E10/70—Wind energy
    • Y02E10/728—Onshore wind turbines
    • 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
    • Y02E—REDUCTION OF GREENHOUSE GAS [GHG] EMISSIONS, RELATED TO ENERGY GENERATION, TRANSMISSION OR DISTRIBUTION
    • Y02E70/00—Other energy conversion or management systems reducing GHG emissions
    • Y02E70/30—Systems combining energy storage with energy generation of non-fossil origin
    • 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
    • Y02T10/90—Energy harvesting concepts as power supply for auxiliaries' energy consumption, e.g. photovoltaic sun-roof

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  • Engineering & Computer Science (AREA)
  • Chemical & Material Sciences (AREA)
  • Combustion & Propulsion (AREA)
  • Mechanical Engineering (AREA)
  • Power Engineering (AREA)
  • Life Sciences & Earth Sciences (AREA)
  • Sustainable Development (AREA)
  • Sustainable Energy (AREA)
  • General Engineering & Computer Science (AREA)
  • Transportation (AREA)
  • Wind Motors (AREA)

Abstract

The invention discloses a device for utilizing the variable power of windward resistance of an automobile, which mainly relates to the technical field of vehicle engineering; comprising the following steps: a vehicle speed sensor; an ECU; the front end of the automobile is provided with a front air inlet communicated with the front air channel, a front air inlet grille is arranged in the front air inlet, the bottom of the automobile is provided with a front air outlet communicated with the front air channel, a front air outlet grille is arranged in the front air outlet, and a front fan is arranged in the front air channel; a generator; the top of the automobile is provided with a rear air inlet communicated with the rear air channel, a rear air inlet grille is arranged in the rear air inlet, the rear end of the automobile is provided with a rear air outlet communicated with the rear air channel, a rear air outlet grille is arranged in the rear air outlet, and a rear fan is arranged in the rear air channel; a motor; a transformer; the invention can convert part of head-on airflow energy in the running process of the automobile into the kinetic energy of the automobile, reduces wind resistance, improves a negative pressure area in high-speed running, and can improve the utilization rate of energy.

Description

Device for utilizing automobile windward resistance to change power
Technical Field
The invention relates to the technical field of vehicle engineering, in particular to a device for utilizing the wind resistance of an automobile to change into power.
Background
The running resistance of the automobile consists of mechanical resistance and air resistance, the resistance is not constant when the automobile runs, the automobile mainly receives the mechanical resistance when running at a low speed, the air resistance is greatly increased when the automobile runs at a high speed, for example, when the automobile runs at a speed of 90km/h, the air resistance accounts for 55% of the total running resistance, namely 55% of the total power emitted by an engine is consumed by the air resistance, so that the utilization rate of energy sources is greatly improved by recovery of energy of the head-on airflow when the automobile runs, and the existing recovery devices of the head-on airflow energy on some running vehicles are mainly in the form of wind turbines, change the head-on airflow energy into electric energy for storage for secondary utilization, and often cannot directly convert the head-on airflow energy into the kinetic energy for running of the automobile, so that certain energy sources are lost.
Disclosure of Invention
The invention aims to solve the problems in the prior art and provide the utilization device for changing the windward resistance of the automobile into the power, which can convert part of windward energy in the running process of the automobile into the kinetic energy of the automobile, reduce the windward resistance, improve the negative pressure area in the high-speed running process, reduce the energy consumption of the automobile and improve the utilization rate of energy sources.
The invention aims to achieve the aim, and the aim is achieved by the following technical scheme:
the utility model provides a car windward resistance becomes power utilizing device, includes:
the vehicle speed sensor is arranged at the wheels of the automobile and is used for measuring the speed of the automobile;
ECU；
the front air duct is positioned at the front end in the body of the automobile, the front end of the automobile is provided with a front air inlet communicated with the front air duct, a front air inlet grille is arranged in the front air inlet, the bottom of the automobile is provided with a front air outlet communicated with the front air duct, a front air outlet grille is arranged in the front air outlet, and a front fan is arranged in the front air duct;
the generator is arranged in the body of the automobile, and a rotor of the generator is in transmission connection with the front fan;
the rear air duct is positioned at the rear end of the automobile body, a rear air inlet communicated with the rear air duct is formed in the top of the automobile, a rear air inlet grille is arranged in the rear air inlet, a rear air outlet communicated with the rear air duct is formed in the rear end of the automobile, a rear air outlet grille is arranged in the rear air outlet, and a rear fan is arranged in the rear air duct;
the motor is arranged in the body of the automobile, and the rotating shaft of the motor is in transmission connection with the rear fan;
the input end of the transformer is connected with the generator, and the output end of the transformer is connected with the motor;
the vehicle speed sensor, the front air inlet grille, the front air outlet grille, the rear air inlet grille, the rear air outlet grille, the generator, the transformer and the motor are all in signal connection with the ECU.
Preferably, the front air inlet grille and the rear air inlet grille are active air inlet grille, and the front air outlet grille and the rear air outlet grille are active air outlet grille.
Preferably, the transformer comprises a closed iron core, a fixed coil winding connected with the generator and a variable coil winding connected with the motor are arranged on the closed iron core, a sliding contact is arranged on the variable coil winding, the sliding contact is connected with a control motor for adjusting the position of the sliding contact, and the control motor is in signal connection with the ECU.
Preferably, the generator and the motor are both provided with a rotation speed sensor, and the rotation speed sensor is in signal connection with the ECU.
Preferably, the output end of the transformer is connected with a rectifier, the rectifier is connected with a storage battery, and the ECU is connected with a brake pedal sensor.
Preferably, the front fan and the rear fan are vertical-axis fans.
Compared with the prior art, the invention has the beneficial effects that:
1. the vehicle speed sensor of the invention is used for measuring the vehicle speed of the automobile and sending the measurement result to the ECU, and the ECU judges whether the vehicle speed reaches the opening condition of the invention, for example, the opening condition can be set to be that the vehicle speed reaches 90km/h and above; when the ECU judges that the vehicle speed reaches the opening condition of the invention, the ECU controls to open the front air inlet grille, the front air outlet grille, the rear air inlet grille and the rear air outlet grille, the front fan rotates under the action of resistance wind, electric energy is generated on the generator, the electric energy is changed into the rotational kinetic energy of the rear fan by the motor, and the rear fan rotates, so that air flows into the rear air channel from the rear air inlet grille and flows out of the rear air outlet grille to generate backward thrust, thereby recovering windward resistance of the vehicle at a uniform speed and in an accelerated state, converting part of windward airflow energy in the running process of the vehicle into the kinetic energy of the vehicle, reducing wind resistance, improving a negative pressure area in the running process of the vehicle at a high speed, reducing the energy consumption of the vehicle and improving the utilization rate of energy sources.
2. The invention can shorten the braking distance and recover the braking energy when the automobile brakes, the brake pedal sensor detects the position of the brake pedal and sends the detection result to the ECU, the ECU judges whether the brake pedal is stepped down, if the brake pedal is stepped down, the rear air inlet grille, the rear air outlet grille and the motor are closed, and the electric energy generated on the generator is stored in the storage battery.
Drawings
FIG. 1 is a schematic diagram of the structure of the present invention;
fig. 2 is a control schematic of the ECU of the present invention;
FIG. 3 is a control flow diagram of the present invention;
FIG. 4 is a schematic diagram of a transformer of the present invention;
FIG. 5 is a transformer control flow diagram of the present invention;
FIG. 6 is a schematic diagram of the energy storage of the present invention in a high speed braking condition;
fig. 7 is a control flow chart of the present invention in a high-speed braking state.
The reference numbers shown in the drawings:
1. a vehicle speed sensor; 2. an ECU; 3. a front intake grill; 4. a front exhaust grill; 5. a rear intake grill; 6. a rear exhaust grill; 7. a front fan; 8. a generator; 81. fixing the coil winding; 82. a variable coil winding; 83. a sliding contact; 84. controlling a motor; 85. a rotation speed sensor; 9. a transformer; 10. a motor; 11. a rear fan; 12. a front air duct; 13. a rear air duct; 14. a rectifier; 15. a storage battery; 16. a brake pedal sensor.
Detailed Description
The invention will be further illustrated with reference to specific examples. It is to be understood that these examples are illustrative of the present invention and are not intended to limit the scope of the present invention. Further, it will be understood that various changes or modifications may be made by those skilled in the art after reading the teachings of the invention, and such equivalents are intended to fall within the scope of the invention as defined herein.
Examples: 1-7, the invention discloses a device for utilizing the variable power of the windward resistance of an automobile, which starts from reducing the maximum windward area, and converts part of windward airflow energy into the kinetic energy of the automobile by designing an air duct and adding an energy recovery device, and specifically comprises the following steps:
a vehicle speed sensor 1, wherein the vehicle speed sensor 1 is arranged at a wheel of an automobile and is used for measuring the speed of the automobile;
the ECU2, the ECU2 may directly adopt the ECU of the vehicle itself;
the front air duct 12 is positioned at the front end in the body of the automobile, the front end of the automobile is provided with a front air inlet communicated with the front air duct 12, the front air inlet is internally provided with a front air inlet grille 3, the bottom of the automobile is provided with a front air outlet communicated with the front air duct 12, the front air outlet is internally provided with a front air outlet grille 4, the front air duct 12 is internally provided with a front fan 7, when the automobile runs, air flow enters the front air duct 12 from the front air inlet grille 3 and is discharged out of the front air duct 12 through the front air outlet grille 4, the rear wall of the front air duct is arc-shaped, the blades of the front fan 7 face the front air inlet, and the rear sides of the blades are fixedly provided with rotating shafts;
the generator 8 is arranged in the automobile body of the automobile, the generator 8 can be arranged in the front air duct 12 or at other positions of the automobile body, and a rotor of the generator 8 is in transmission connection with a rotating shaft of the front fan 7 through a coupling;
the rear air duct 13 is positioned at the rear end of the automobile body of the automobile, a rear air inlet communicated with the rear air duct 13 is formed in the top of the automobile, a rear air inlet grille 5 is arranged in the rear air inlet, a rear air outlet communicated with the rear air duct 13 is formed in the rear end of the automobile, a rear air outlet grille 6 is arranged in the rear air outlet, a rear fan 11 is arranged in the rear air duct 13, the fan blades of the rear fan 11 face the rear air outlet, and a rotating shaft is fixed on the front sides of the fan blades;
the front fan 7 and the rear fan 11 may be horizontal shafts or vertical shafts, and preferably, the front fan 7 and the rear fan 11 are vertical shafts.
Preferably, the front air inlet grille 3 and the rear air inlet grille 5 are active air inlet grille, and the front air outlet grille 4 and the rear air outlet grille 6 are active air outlet grille, so that the opening and closing of the grille are convenient to control.
The motor 10 is arranged in the automobile body of the automobile, the motor 10 can be arranged in the rear air duct 13 or at other positions of the automobile body, and the rotating shaft of the motor 10 is in transmission connection with the rotating shaft of the rear fan 11 through a coupling;
the input end of the transformer 9 is connected with the generator 8, and the output end of the transformer 9 is connected with the motor 10;
the vehicle speed sensor 1, the front air inlet grille 3, the front air outlet grille 4, the rear air inlet grille 5, the rear air outlet grille 6, the generator 8, the transformer 9 and the motor 10 are all in signal connection with the ECU 2.
Since the resistance composition of the automobile is not constant during running, the automobile mainly receives mechanical resistance during low-speed running, and the air resistance ratio of the automobile is greatly increased during high-speed running, when the automobile runs at a speed of 90km/h, the air resistance accounts for about 55% of the total running resistance, namely, 55% of the total power emitted by the engine is consumed by the air resistance at the moment, so that the invention is very important when to start.
When the invention is used, the vehicle speed sensor 1 is used for measuring the vehicle speed of the automobile and sending the measurement result to the ECU2, and the ECU2 judges whether the vehicle speed reaches the opening condition of the invention, for example, the opening condition can be set to be that the vehicle speed reaches 90km/h and above; when the ECU2 judges that the vehicle speed reaches the opening condition of the invention, the ECU2 controls to open the front air inlet grille 3, the front air outlet grille 4, the rear air inlet grille 5 and the rear air outlet grille 6, the front fan 7 rotates under the action of resistance wind, electric energy is generated on the generator 8, the generator 8 is connected with the transformer 9 through a wire, and the air flow flows in from the front air inlet grille 3 and flows out from the front air outlet grille 4 due to the forward running of the automobile; the transformer 9 is connected with the motor 10 through a wire, the motor 10 changes electric energy into rotational kinetic energy of the rear fan 11, and the rear fan 11 rotates, so that air flows into the rear air duct 13 from the rear air inlet grille 5 and flows out of the rear air outlet grille 6 to generate backward thrust, and the detailed flow chart is shown in the figure 3, so that recovery of windward resistance of a vehicle at a uniform speed and accelerated speed in a high speed state can be completed, part of windward air flow energy in the running process of the vehicle is converted into kinetic energy of the vehicle, the energy consumption of the vehicle can be reduced, and the utilization rate of energy sources is improved.
The front duct 12 and the rear duct 13 are installed to better utilize wind energy and reduce the generation of additional internal circulation resistance, specifically:
when the automobile runs at a speed of 90km/h or more, the air in the front of the automobile is at V 1 Is introduced into the interior of the vehicle through the opened front grille 3;
the air entering the interior of the automobile is rectified through the front air duct 12 and blown to the front fan 7, and flows out of the automobile through the opened front exhaust grille 4;
air at the rear part of the automobile flows into a rear air duct 13 from a rear air inlet grille 5 under the action of a rear fan 11;
the air is accelerated in the rear duct 13 and rectified by the opened rear exhaust grill 6 at V 2 Is discharged outside the vehicle at a speed as shown in fig. 1 and 3.
From ideal conditions, the following formula can be derived from the law of conservation of energy:
W 1 ＝W 2 ；
Figure SMS_1
ω 1 T 1 ＝ω 2 T 2 ＝W；
F 1 V 1 ＝F 2 V 2 ；
in the above formula: w is wind power, S is fan swept area, ρ is air density, V is automobile running speed, V 1 、V 2 For wind speed, F 1 、F 2 Is the resistance and thrust of the wind. From the above equation, it can be seen that under ideal conditions, the power of the front fan 7 is equal to the power of the rear fan 11. If V is 1 ＞V 2 Can make F 1 ＜F 2 In this case, the resistance of the wind received by the front fan 7 of the automobile is smaller than the thrust provided by the rear fan wind 11, so that the air resistance in running of the automobile can be changed to additional running power.
To achieve V 1 ＞V 2 The conditions of (1) require a fan torque T 1 ＜T 2 . The invention changes the voltage and current of the motor 10 by using the transformer 9 to change the rotating speed of the rear fan 11, thereby meeting the requirement of T 1 ＜T 2 Is the case in (a).
Preferably, as shown in fig. 4, the transformer 9 includes a closed iron core, a fixed coil winding 81 connected with the generator 8 and a variable coil winding 82 connected with the motor 10 are arranged on the closed iron core, a sliding contact 83 is arranged on the variable coil winding 82, a control motor 84 for adjusting the position of the sliding contact 83 is connected to the sliding contact 83, and the control motor 84 is in signal connection with the ECU 2. Further, the generator 8 and the motor 10 are both provided with a rotation speed sensor 85, and the rotation speed sensor 85 is in signal connection with the ECU 2.
When the present invention is turned on, a rotation speed sensor 85 located in the vehicle measures the rotation speeds of the respective generator 8 and motor 10, and transmits signals to the ECU2; the ECU2 judges whether the rotation speed ratio of the generator 8 and the motor 10 accords with the preset ratio, if not, the control motor 84 is controlled to drive the sliding contact 83 to move so as to meet the rotation speed omega of the rear fan 11 1 And omega 2 In a preset proportion, thereby enabling the torque of the front fan and the rear fan to meet T in real time 1 And T is 2 The set proportion is satisfied, and the control flow chart is shown in fig. 5.
Preferably, as shown in fig. 6, the output end of the transformer 9 is connected with a rectifier 14, the rectifier 14 is connected with a storage battery 15, and the ECU2 is connected with a brake pedal sensor 16, so that the invention can not only recover windward resistance of the vehicle at a uniform speed and acceleration in a high-speed state, but also shorten the braking distance and recover braking energy when the vehicle brakes.
The ECU2 judges whether the utilization device of the automobile windward resistance variable power is started or not, if the utilization device is started, the brake pedal sensor 16 detects the position of the brake pedal, the ECU2 judges whether the brake pedal is stepped down, and if the brake pedal is stepped down, the rear air inlet grille 5, the rear air outlet grille 6 and the generator 8 are closed; the front fan 7 continuously rotates under the action of resistance wind, the generator 8 generates electric energy, and the generator 8 is connected with the transformer 9 through a wire to process the electric energy; the two ends of the rectifier 14 are respectively connected with the transformer 9 and the storage battery 15, and the rectifier 14 changes the alternating current into direct current which can be stored by the storage battery 15, and the specific control flow is shown in fig. 7.

Claims (6)

1. The utility model provides a car windward resistance becomes power utilization device which characterized in that includes:
a vehicle speed sensor (1), wherein the vehicle speed sensor (1) is arranged at a wheel of an automobile and is used for measuring the speed of the automobile;
ECU(2)；
the automobile comprises a front air duct (12), wherein the front air duct (12) is positioned at the front end in the automobile body of the automobile, a front air inlet communicated with the front air duct (12) is formed in the front end of the automobile, a front air inlet grille (3) is arranged in the front air inlet, a front air outlet communicated with the front air duct (12) is formed in the bottom of the automobile, a front air outlet grille (4) is arranged in the front air outlet, and a front fan (7) is arranged in the front air duct (12);
the generator (8) is arranged in the body of the automobile, and a rotor of the generator (8) is in transmission connection with the front fan (7);
the automobile comprises a rear air duct (13), wherein the rear air duct (13) is positioned at the rear end of an automobile body of the automobile, a rear air inlet communicated with the rear air duct (13) is formed in the top of the automobile, a rear air inlet grille (5) is arranged in the rear air inlet, a rear air outlet communicated with the rear air duct (13) is formed in the rear end of the automobile, a rear air outlet grille (6) is arranged in the rear air outlet, and a rear fan (11) is arranged in the rear air duct (13);
the motor (10) is arranged in the body of the automobile, and the rotating shaft of the motor (10) is in transmission connection with the rear fan (11);
the input end of the transformer (9) is connected with the generator (8), and the output end of the transformer is connected with the motor (10);
the transformer (9) changes the output voltage and current of the motor (10) and further changes the rotating speed of the rear fan (11), so that the torque of the front fan (7) is smaller than that of the rear fan (11), the resistance of wind borne by the front fan (7) of the automobile is smaller than the thrust provided by the wind of the rear fan (11), and the air resistance in running of the automobile can be changed into additional running power;
the vehicle speed sensor (1), the front air inlet grille (3), the front air outlet grille (4), the rear air inlet grille (5), the rear air outlet grille (6), the generator (8), the transformer (9) and the motor (10) are all in signal connection with the ECU (2).
2. The device for utilizing the power of changing the resistance to the wind of the automobile according to claim 1, wherein: the front air inlet grille (3) and the rear air inlet grille (5) are active air inlet grille, and the front air outlet grille (4) and the rear air outlet grille (6) are active air outlet grille.
3. The device for utilizing the power of changing the resistance to the wind of the automobile according to claim 1, wherein: the transformer (9) comprises a closed iron core, a fixed coil winding (81) connected with a generator (8) and a variable coil winding (82) connected with a motor (10) are arranged on the closed iron core, a sliding contact (83) is arranged on the variable coil winding (82), a control motor (84) for adjusting the position of the sliding contact (83) is connected with the sliding contact (83), and the control motor (84) is in signal connection with an ECU (2).
4. The device for utilizing the variable power of the windward resistance of the automobile according to claim 3, wherein: and the generator (8) and the motor (10) are respectively provided with a rotating speed sensor (85), and the rotating speed sensors (85) are in signal connection with the ECU (2).
5. The device for utilizing the power of changing the resistance to the wind of the automobile according to claim 1, wherein: the output end of the transformer (9) is connected with a rectifier (14), the rectifier (14) is connected with a storage battery (15), and the ECU (2) is connected with a brake pedal sensor (16).
6. The device for utilizing the power of changing the resistance to the wind of the automobile according to claim 1, wherein: the front fan (7) and the rear fan (11) are vertical-axis fans.
CN202110315837.5A 2021-03-24 2021-03-24 Device for utilizing automobile windward resistance to change power Active CN112937289B (en)

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