CN107914596B - Electric automobile charging system based on wireless power transmission - Google Patents
Electric automobile charging system based on wireless power transmission Download PDFInfo
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- CN107914596B CN107914596B CN201711352789.7A CN201711352789A CN107914596B CN 107914596 B CN107914596 B CN 107914596B CN 201711352789 A CN201711352789 A CN 201711352789A CN 107914596 B CN107914596 B CN 107914596B
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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
- B60L53/00—Methods of charging batteries, specially adapted for electric vehicles; Charging stations or on-board charging equipment therefor; Exchange of energy storage elements in electric vehicles
- B60L53/30—Constructional details of charging stations
- B60L53/35—Means for automatic or assisted adjustment of the relative position of charging devices and vehicles
- B60L53/38—Means for automatic or assisted adjustment of the relative position of charging devices and vehicles specially adapted for charging by inductive energy transfer
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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
- B60L53/00—Methods of charging batteries, specially adapted for electric vehicles; Charging stations or on-board charging equipment therefor; Exchange of energy storage elements in electric vehicles
- B60L53/10—Methods of charging batteries, specially adapted for electric vehicles; Charging stations or on-board charging equipment therefor; Exchange of energy storage elements in electric vehicles characterised by the energy transfer between the charging station and the vehicle
- B60L53/12—Inductive energy transfer
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- H—ELECTRICITY
- H02—GENERATION; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
- H02J—CIRCUIT ARRANGEMENTS OR SYSTEMS FOR SUPPLYING OR DISTRIBUTING ELECTRIC POWER; SYSTEMS FOR STORING ELECTRIC ENERGY
- H02J50/00—Circuit arrangements or systems for wireless supply or distribution of electric power
- H02J50/10—Circuit arrangements or systems for wireless supply or distribution of electric power using inductive coupling
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- H—ELECTRICITY
- H02—GENERATION; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
- H02J—CIRCUIT ARRANGEMENTS OR SYSTEMS FOR SUPPLYING OR DISTRIBUTING ELECTRIC POWER; SYSTEMS FOR STORING ELECTRIC ENERGY
- H02J50/00—Circuit arrangements or systems for wireless supply or distribution of electric power
- H02J50/90—Circuit arrangements or systems for wireless supply or distribution of electric power involving detection or optimisation of position, e.g. alignment
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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
- Y02T10/60—Other road transportation technologies with climate change mitigation effect
- Y02T10/7072—Electromobility specific charging systems or methods for batteries, ultracapacitors, supercapacitors or double-layer capacitors
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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
- Y02T10/72—Electric energy management in electromobility
-
- 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
- Y02T90/00—Enabling technologies or technologies with a potential or indirect contribution to GHG emissions mitigation
- Y02T90/10—Technologies relating to charging of electric vehicles
- Y02T90/12—Electric charging stations
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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
- Y02T90/00—Enabling technologies or technologies with a potential or indirect contribution to GHG emissions mitigation
- Y02T90/10—Technologies relating to charging of electric vehicles
- Y02T90/14—Plug-in electric vehicles
Abstract
The electric automobile charging system based on wireless power transmission comprises a charging pile and a wireless power receiving device; the charging pile comprises a lifting control part, an automatic alignment device and a wireless electric energy transmitting device. The lifting control part comprises a signal acquisition module, a first signal processing module, a first microprocessor, a first driving module, a first executing module and a second executing module. The automatic alignment device consists of a signal transmitting system and a system receiving system. The wireless electric energy transmitting device comprises a power supply port, a first rectifier, a first DC-DC converter, a high-frequency inverter, a transmitting coil, a wired direct current charging module and a wired alternating current charging module. The wireless power receiving device comprises a receiving coil, a second rectifier, a second DC-DC converter and a battery access port. The wind-solar complementary power generation system is used as a power supply of the electric vehicle charging pile, and the problem that the power generation voltage output by the wind-solar complementary power generation system and other new energy power generation systems is low is solved.
Description
Technical Field
The invention relates to an electric automobile charging pile, in particular to an electric automobile charging system based on wireless power transmission.
Background
With the exhaustion of fossil energy and the increasing pollution of the environment, various countries in the world transfer targets to the development and application of new energy, and a wind-solar complementary power generation system is also attracting attention as an excellent new energy power generation system; meanwhile, how to use a wind-solar complementary generation system for charging an electric automobile as an excellent product for new energy application and how to efficiently and safely charge the electric automobile are also topics of increasing attention. Therefore, research on an electric vehicle wireless charging pile for a wind-solar complementary power generation system is very important.
Disclosure of Invention
The invention provides an electric vehicle charging system based on wireless power transmission, which adopts a wind-solar complementary power generation system as a power supply of an electric vehicle charging pile, and solves the problem of lower power generation voltage output by a new energy power generation system such as the wind-solar complementary system.
The technical scheme adopted by the invention is as follows:
the electric automobile charging system based on wireless power transmission comprises a charging pile and a wireless power receiving device; the charging pile comprises a lifting control part, an automatic alignment device and a wireless electric energy transmitting device.
The lifting control part comprises a signal acquisition module, a first signal processing module, a first microprocessor, a first driving module, a first executing module and a second executing module. The output end of the signal acquisition module is connected with the input end of the first signal processing module, the output end of the first signal processing module is connected with the input end of the first microprocessor, the output end of the first microprocessor is connected with the input end of the first driving module, and the output end of the first driving module is respectively connected with the input end of the first executing module and the input end of the second executing module.
The automatic alignment device consists of a signal transmitting system and a system receiving system, wherein the signal transmitting system comprises an infrared transmitting module, and the system receiving system comprises an infrared receiving module, a second signal processing module, a second microprocessor and a second driving module. The output end of the infrared emission module is connected with the input end of the infrared receiving module, the output end of the infrared receiving module is connected with the input end of the second signal processing module, the output end of the second signal processing module is connected with the input end of the second microprocessor, and the output end of the second microprocessor 9 is connected with the input end of the second driving module.
The wireless electric energy transmitting device comprises a power supply port, a first rectifier, a first DC-DC converter, a high-frequency inverter, a transmitting coil, a wired direct current charging module and a wired alternating current charging module. The output end of the power supply port is connected with the input end of a first rectifier, the output end of the first rectifier is connected with the input end of a first DC-DC converter, and the output end of the first DC-DC converter is respectively connected with the input ends of the high-frequency inverter, the wired direct current charging module and the wired alternating current charging module; the output end of the high-frequency inverter is connected with the input end of the transmitting coil.
The wireless power receiving device comprises a receiving coil, a second rectifier, a second DC-DC converter and a battery access port. The receiving coil output end is connected with the second rectifier input end, and the second rectifier output end is connected with the second DC-DC converter input end, and the second DC-DC converter output end is connected with the battery access port.
The charging pile further comprises a lifting door and six pulleys, wherein the six pulleys are arranged below the wireless electric energy transmitting device, the left pulley and the right pulley are respectively arranged in two, the front pulley and the rear pulley are respectively arranged below each pulley, and the pulleys are connected with the second driving module.
The first execution module is used for controlling the lifting of the lifting door; the first execution module controls unlocking of the pulley lock.
And the second execution module is used for controlling the lifting of the charging pile.
The infrared emission module comprises four infrared emitters which are respectively arranged at four corners of the wireless electric energy receiving device, and the infrared receiving module comprises an infrared receiver.
And the power supply port is connected with a wind-solar complementary power generation system.
Compared with the prior art, the electric automobile charging system based on wireless power transmission has the following beneficial effects:
(1): the wind-solar complementary power generation system is adopted as a power supply of a novel electric vehicle charging pile based on wireless power transmission;
(2): the lifting type wireless charging pile is adopted, the lifting type wireless charging pile is lifted when in wired charging, the lifting type wireless charging pile is lowered when in wireless charging, the diversified charging requirements are met, meanwhile, when in wireless charging, the area where the wireless charging pile is located can be used as a parking space, a large amount of land area is saved, and the situation that the urban land area is insufficient is adapted;
(3): the automatic alignment device is used to avoid the trouble of reduced charging efficiency caused by inaccurate parking position when people park for wireless charging;
(4): the three-phase three-switch three-level VIENNA rectifier reduces the production cost of the charging pile and the efficiency of electric energy conversion;
(5): the novel high-gain direct current converter is adopted, so that the problem that the power generation voltage output by a new energy power generation system such as a wind-solar complementary system is lower is solved;
(6): the application of the lifting door and the pulley lock ensures that the automatic alignment device has misoperation in a wired charging mode;
(7): the pulley block ensures the high-speed and effective operation of the automatic alignment device.
Drawings
The invention is further illustrated by the following examples in conjunction with the accompanying drawings:
FIG. 1 is a schematic view of the arrangement of the device of the present invention;
wherein: the system comprises an a-charging pile, a b-wind-solar complementary power generation system, a c-battery and L0-ground.
FIG. 2 is a schematic diagram of the structure of the device of the present invention;
fig. 3 is a schematic view of the structure of the lifting control part of the present invention.
Fig. 4 is a schematic structural diagram of an automatic alignment device according to the present invention.
Fig. 5 is a schematic diagram of the charging operation principle of the present invention.
Fig. 6 is a schematic diagram of a three-phase three-switch three-level VIENNA rectifier topology of the present invention.
Fig. 7 is a schematic diagram of a topology of a novel high gain dc converter of the present invention.
Fig. 8 is a schematic diagram of the topology of the novel capacitor self-equalizing multilevel high-frequency inverter of the present invention.
Fig. 9 is a schematic diagram of a wireless power transmission principle of the present invention.
Detailed Description
As shown in fig. 1, a novel electric automobile charging pile based on wireless power transmission comprises a charging pile a and a wireless power receiving device 9.
As shown in fig. 2, the charging pile a includes a lifting button 1, a lifting control part 2, a transmitting coil built-in device 3, an automatic alignment device 4, a wireless power transmitting device 5, a pulley 6, a lifting door 7, and a pulley latch 8. The lifting door 7 is installed as a housing of the charging pile.
As shown in fig. 3, the lifting control part 2 includes a signal acquisition module 10, a first signal processing module 11, a first microprocessor 12, a first driving module 13, a first executing module 14, and a second executing module 15. The output end of the signal acquisition module 10 is connected with the input end of the first signal processing module 11, the output end of the first signal processing module 11 is connected with the input end of the first microprocessor 12, the output end of the first microprocessor 12 is connected with the input end of the first driving module 13, and the output end of the first driving module 13 is respectively connected with the input end of the first executing module 14 and the input end of the second executing module 15.
The signal acquisition module 10 adopts a DAQM-4202 analog acquisition module.
The first signal processing module 11 employs APG-01V of the family ependeraceae.
The first microprocessor 12 employs an STM32F407 type microcontroller.
The first driving module 13 adopts XD-37GB3525.
First execution module 14 employs ENMGRT-P.
The second execution module 15 employs USR-R16-T.
As shown in fig. 4, the automatic alignment device 4 is composed of a signal transmitting system and a system receiving system, wherein the signal transmitting system comprises an infrared transmitting module 16, and the system receiving system comprises an infrared receiving module 17, a second signal processing module 18, a second microprocessor 19 and a second driving module 20. The output end of the infrared emission module 16 is connected with the input end of the infrared receiving module 17, the output end of the infrared receiving module 17 is connected with the input end of the second signal processing module 18, the output end of the second signal processing module 18 is connected with the input end of the second microprocessor 19, and the output end of the second microprocessor 19 is connected with the input end of the second driving module 20.
The second signal processing module 18 employs APG-01V of the family ependeraceae.
The second microprocessor 19 employs STM32F407.
The second driving module 20 employs XD-37GB3525.
As shown in fig. 5, the wireless power transmitting device 5 includes a power supply port 21, a first rectifier 22, a first DC-DC converter 23, a high-frequency inverter 24, a transmitting coil 25, a wired direct-current charging module 30, and a wired alternating-current charging module 31;
the output end of the power supply port 21 is connected with the input end of the first rectifier 22, the output end of the first rectifier 22 is connected with the input end of the first DC-DC converter 23, and the output end of the first DC-DC converter 23 is respectively connected with the input ends of the high-frequency inverter 24, the wired direct current charging module 30 and the wired alternating current charging module 31; the output of the high frequency inverter 24 is connected to the input of the transmitting coil 25.
As shown in fig. 5, the wireless power receiving apparatus 9 includes a receiving coil 26, a second rectifier 27, a second DC-DC converter 28, and a battery access port 29. The output end of the receiving coil 26 is connected with the input end of a second rectifier 27, the output end of the second rectifier 27 is connected with the input end of a second DC-DC converter 28, and the output end of the second DC-DC converter 28 is connected with a battery access port 29.
As shown in fig. 5, the transmission coil built-in device 3 includes a transmission coil 25.
The first rectifier 22 and the second rectifier 27 adopt three-phase three-switch three-level VIENNA type rectifiers, the circuit structure is shown in fig. 6, the three-phase three-switch three-level VIENNA type rectifier has the excellent characteristics of small number of switching tubes, simple control circuit and the like, and the VIENNA rectifier control strategy based on the combination of passivity and sliding mode variable structure control is adopted aiming at the nonlinear characteristics of the VIENNA rectifier, the sliding mode variable structure control is adopted at the outer voltage ring, and the passivity control is adopted at the inner current ring, so that the rectifier has better robustness, dynamic characteristics and Hangzhou interference.
The first DC-DC converter 23 and the second DC-DC converter 28 adopt a novel high-gain direct current converter, and are used for solving the problem of lower power generation voltage output by a new energy power generation system such as a wind-solar complementary system. The circuit structure of the DC converter is shown in fig. 7, the problem of large current and voltage stress of a low-voltage end power device in the traditional converter can be effectively solved, leakage inductance energy can be effectively recovered, and the DC converter can obtain higher performance and gain than a common converter with the same turns while keeping the duty ratio.
The high-frequency inverter 24 adopts a novel capacitor self-equalizing multi-level high-frequency inverter, which is used for overcoming the defects that the efficiency of a general inverter is low and the inverter is not suitable for being applied under the condition of limited quantity of power sources such as an electric automobile, and the circuit structure is shown in fig. 8, has the advantages of less independent power sources, low conduction loss, high transmission efficiency and the like, solves the problem of unbalanced capacitor voltage, and simplifies a modulation circuit and a modulation algorithm.
As shown in fig. 9, the infrared emission module 16 includes four infrared emitters respectively disposed at four corners of the wireless power receiving device 9, and the emission coil 25 adopts a magnetic resonance type wireless power transmission technology, which has the characteristics of long transmission distance, large displacement fault tolerance, flexible use, strong penetrating power, high transmission efficiency, etc.
The application method of the charging device comprises the following steps:
1) The signal acquisition module 10 is used for acquiring a lifting starting signal, transmitting the lifting starting signal to the first signal processing module 11 after acquisition, transmitting the signal to the first microprocessor 12 after the first signal processing module 11 processes the signal, transmitting a result to the first driving module 13 after the first driving module 13 runs through an algorithm in the microprocessor, enabling the first driving module 13 to obtain an instruction, enabling the second execution module 15 to work, enabling the device to be in a wired charging mode when the charging pile ascends, and enabling the device to be in a wireless charging mode when the charging pile descends;
2) When the charging pile descends, the power supply port 21 transmits electric energy to the first rectifier 22, three-phase alternating current is converted into direct current through rectification and then transmitted to the first DC-DC converter 23, the boosted direct current is transmitted to the high-frequency inverter 24 for inversion treatment, the direct current is converted into three-phase alternating current and then transmitted to the transmitting coil 25, the direct current is transmitted in a wireless electric energy mode, and is received by the receiving coil 26 and then transmitted to the second rectifier 27 for rectification, the three-phase alternating current is converted into direct current and then transmitted to the second DC-DC converter 28, the boosted direct current is transmitted to the battery access port 29, and the battery access port 29 charges an electric automobile battery.
3) When the charging pile rises, the power supply port 21 transmits electric energy to the first rectifier 22, three-phase alternating current is converted into direct current through rectification and then transmitted to the first DC-DC converter 23, and the first DC-DC converter 23 supplies power to the wired direct current charging module 30.
4) When the charging pile ascends, the power supply port 21 transmits electric energy to the first rectifier 22, converts three-phase alternating current into direct current through rectification, transmits the direct current to the first DC-DC converter 23, boosts the voltage through the first DC-DC converter 23, transmits the boosted direct current to the high-frequency inverter 24 for inversion treatment, converts the direct current into three-phase alternating current, and transmits the three-phase alternating current to the wired direct current charging module 30.
Wherein: in the step (2), the step of (C),
when the charging pile descends, the first driving module 13 obtains an instruction, the first executing module 14 works to open the lifting door 7 and unlock the pulley lock 8, the automatic alignment device 4 works at the moment, and the infrared receiving module 17 receives a signal emitted by the infrared emitting module 16 and then transmits the signal to the second signal processing module 18; the second signal processing module 18 performs optimized conversion such as filtering, amplifying and a/D conversion on the signals, generates digital signals, transmits the digital signals to the second microprocessor 19, performs algorithm operation on the second microprocessor 19 according to different infrared signals emitted by four corners, judges whether the transmitting coil is opposite to the receiving coil, if not, sends out an instruction to enable the second driving module 20 to work, drives the 6 pulley blocks of the pulley 6 to move, and stops working until the receiving coil is aligned with the transmitting coil.
When in specific use, the method is divided into two modes:
wireless charging mode:
when the lifting button is not started, the charging pile is positioned underground at the moment and is in a wireless charging mode, electric energy transmitted by the optical power generation system is transmitted to the power supply port through an underground cable, the power supply port transmits the electric energy to the first rectifier 22, three-phase alternating current is converted into direct current through rectification and then transmitted to the first DC-DC converter 23, the first DC-DC converter 23 is used for boosting, the boosted direct current is transmitted to the high-frequency inverter for inversion treatment, the direct current is converted into three-phase alternating current and then transmitted to the transmitting coil, the direct current is transmitted in a wireless electric energy mode, and is received by the receiving coil and then transmitted to the second rectifier 27 for rectification, the three-phase alternating current is converted into direct current and then transmitted to the second DC-DC converter 28, the second DC-DC converter 28 is used for boosting treatment and then transmitted to the battery access port, and the battery access port is used for charging the battery of the electric vehicle.
When the battery of the electric automobile is wirelessly charged, the lifting control part works, the built-in second driving module 20 works, an instruction is sent to the first executing module 14 to open the lifting door 7, the pulley lock is unlocked, the automatic alignment device works at the moment, and the infrared receiving module receives signals transmitted by the infrared transmitting module and transmits the signals to the signal processing module; the signal processing module performs optimized conversion such as filtering, amplifying and A/D conversion on the signals, generates digital signals and transmits the digital signals to the second microprocessor 19, the second microprocessor 19 performs algorithm operation according to different infrared signals emitted by four corners, judges whether the emitting coil and the receiving coil are right opposite, if not right opposite, sends out an instruction to enable the second driving module 20 to work, drives 6 pulley blocks of the pulley to move, and stops working until the receiving coil and the emitting coil are aligned.
(two), wired charging mode:
when the lifting button is not started, the lifting control part works, the built-in first driving module 13 works, an instruction is sent to the execution module, the charging pile is lifted to the ground, at the moment, the charging pile is in a wired charging mode, and the wired charging module is used for supplying power for wired direct current charging and the wired alternating current charging module is used for supplying power for wired alternating current charging.
Claims (5)
1. Electric automobile charging system based on wireless power transmission, its characterized in that includes: a charging pile (a) and a wireless electric energy receiving device (9); the charging pile (a) comprises a lifting control part (2), an automatic alignment device (4) and a wireless electric energy emission device (5); the lifting control part (2) comprises a signal acquisition module (10), a first signal processing module (11), a first microprocessor (12), a first driving module (13), a first executing module (14) and a second executing module (15);
the output end of the signal acquisition module (10) is connected with the input end of the first signal processing module (11), the output end of the first signal processing module (11) is connected with the input end of the first microprocessor (12), the output end of the first microprocessor (12) is connected with the input end of the first driving module (13), and the output end of the first driving module (13) is respectively connected with the input end of the first executing module (14) and the input end of the second executing module (15);
the automatic alignment device (4) consists of a signal transmitting system and a system receiving system, wherein the signal transmitting system comprises an infrared transmitting module (16), and the system receiving system comprises an infrared receiving module (17), a second signal processing module (18), a second microprocessor (19) and a second driving module (20);
the output end of the infrared emission module (16) is connected with the input end of the infrared receiving module (17), the output end of the infrared receiving module (17) is connected with the input end of the second signal processing module (18), the output end of the second signal processing module (18) is connected with the input end of the second microprocessor (19), and the output end of the second microprocessor (19) is connected with the input end of the second driving module (20);
the wireless power transmitting device (5) comprises a power supply port (21), a first rectifier (22), a first DC-DC converter (23), a high-frequency inverter (24), a transmitting coil (25), a wired direct-current charging module (30) and a wired alternating-current charging module (31);
the output end of the power supply port (21) is connected with the input end of the first rectifier (22), the output end of the first rectifier (22) is connected with the input end of the first DC-DC converter (23), and the output end of the first DC-DC converter (23) is respectively connected with the input ends of the high-frequency inverter (24), the wired direct-current charging module (30) and the wired alternating-current charging module (31); the output end of the high-frequency inverter (24) is connected with the input end of the transmitting coil (25);
the wireless power receiving device (9) comprises a receiving coil (26), a second rectifier (27), a second DC-DC converter (28) and a battery access port (29);
the output end of the receiving coil (26) is connected with the input end of a second rectifier (27), the output end of the second rectifier (27) is connected with the input end of a second DC-DC converter (28), and the output end of the second DC-DC converter (28) is connected with a battery access port (29);
the charging pile (a) further comprises a lifting door (7) and six pulleys (6), the six pulleys (6) are arranged below the wireless electric energy emission device (5), one pulley is arranged at the left side and the right side, the two pulleys are arranged at the front side and the rear side respectively, a pulley buckle lock (8) is arranged below each pulley (6), and the pulleys (6) are connected with the second driving module (20);
the first execution module (14) controls the lifting of the lifting door (7); the first execution module (14) controls unlocking of the pulley lock (8);
the power supply port (21) is connected with a wind-light complementary power generation system (b), and the wind-light complementary power generation system is used for charging an electric automobile.
2. The electric vehicle charging system based on wireless power transfer of claim 1, wherein: and the second execution module (15) is used for controlling the lifting of the charging pile.
3. The electric vehicle charging system based on wireless power transfer of claim 1, wherein: the infrared emission module (16) comprises four infrared emitters which are respectively arranged at four corners of the wireless power receiving device (9), and the infrared receiving module (17) comprises an infrared receiver.
4. The wireless charging method for the electric automobile charging pile is characterized by comprising the following steps of:
1), a signal acquisition module (10) is used for acquiring a lifting starting signal, the lifting starting signal is transmitted to a first signal processing module (11) after being acquired, the signal is transmitted to a first microprocessor (12) after being processed by the first signal processing module (11), a result is sent to a first driving module (13) after the algorithm in the microprocessor is operated, the first driving module (13) obtains an instruction, a second executing module (15) works, when a charging pile ascends, the device is in a wired charging mode, and when the charging pile descends, the device is in a wireless charging mode;
2) When the charging pile descends, the power supply port (21) transmits electric energy to the first rectifier (22), three-phase alternating current is converted into direct current through rectification and then is transmitted to the first DC-DC converter (23), the boosted direct current is transmitted to the high-frequency inverter (24) to be subjected to inversion treatment, the direct current is converted into three-phase alternating current and then is transmitted to the transmitting coil (25), the direct current is transmitted in the form of wireless electric energy, and is received by the receiving coil (26) and then is transmitted to the second rectifier (27) to be rectified, the three-phase alternating current is converted into direct current and then is transmitted to the second DC-DC converter (28), the boosted direct current is transmitted to the battery access port (29), and the battery access port (29) charges an electric automobile battery;
3) When the charging pile ascends, the power supply port (21) transmits electric energy to the first rectifier (22), three-phase alternating current is converted into direct current through rectification and then transmitted to the first DC-DC converter (23), and the first DC-DC converter (23) supplies power for the wired direct current charging module (30);
4) When the charging pile ascends, the power supply port (21) transmits electric energy to the first rectifier (22), three-phase alternating current is converted into direct current through rectification and then transmitted to the first DC-DC converter (23), the boosted direct current is transmitted to the high-frequency inverter (24) for inversion treatment through the first DC-DC converter (23), and the direct current is converted into three-phase alternating current and then transmitted to the wired direct current charging module (30);
in the step (2), when the charging pile descends, the first driving module (13) obtains an instruction, the first executing module (14) works to open the lifting door (7), the pulley lock (8) is unlocked, the automatic alignment device (4) works at the moment, and the infrared receiving module (17) receives a signal transmitted by the infrared transmitting module (16) and transmits the signal to the second signal processing module (18); the second signal processing module (18) performs optimized conversion such as filtering, amplifying and A/D conversion on the signals, generates digital signals, transmits the digital signals to the second microprocessor (19), and the second microprocessor (19) performs algorithm operation according to different infrared signals emitted by four corners to judge whether the emitting coil and the receiving coil are opposite, if not, an instruction is sent to enable the second driving module (20) to work, and the driving pulley (6) is driven to move until the receiving coil and the emitting coil are aligned, and then stops working.
5. The wired/wireless charging method for the electric automobile charging pile is characterized by comprising the following steps of:
(one), wireless charging mode:
when the lifting button is not started, the charging pile is positioned underground at the moment and is in a wireless charging mode, electric energy transmitted by the optical power generation system is transmitted to a power supply port through an underground cable, the power supply port transmits the electric energy to a first rectifier (22), three-phase alternating current is converted into direct current through rectification and then transmitted to a first DC-DC converter (23), the boosted direct current is transmitted to a high-frequency inverter for inversion treatment, the direct current is converted into three-phase alternating current and then transmitted to a transmitting coil, the direct current is transmitted in a wireless electric energy mode, and is received by a receiving coil and then transmitted to a second rectifier (27) for rectification, the three-phase alternating current is converted into direct current and then transmitted to a second DC-DC converter (28), the boosted direct current is transmitted to a battery access port, and the battery access port charges an electric automobile battery;
when the battery of the electric automobile is wirelessly charged, the lifting control part works, the built-in second driving module (20) works, an instruction is sent to the first executing module (14) to enable the lifting door (7) to be opened, the pulley lock is unlocked, the automatic alignment device works at the moment, and the infrared receiving module receives signals transmitted by the infrared transmitting module and transmits the signals to the signal processing module; the signal processing module performs optimized conversion such as filtering, amplifying and A/D conversion on the signals, generates digital signals and transmits the digital signals to the second microprocessor (19), the second microprocessor (19) performs algorithm operation according to different infrared signals emitted by four corners, judges whether the transmitting coil and the receiving coil are right opposite, if not right opposite, sends out an instruction to enable the second driving module (20) to work, drives the pulley to move, and stops working until the receiving coil and the transmitting coil are aligned;
(two), wired charging mode:
when the lifting button is not started, the lifting control part works, the built-in first driving module (13) works, an instruction is sent to the execution module, the charging pile is lifted to the ground, at the moment, the charging pile is in a wired charging mode, and the wired charging module is used for supplying power for wired direct current charging and the wired alternating current charging module is used for supplying power for wired alternating current charging.
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| CN112912271A (en) * | 2018-05-29 | 2021-06-04 | 多伦多大学理事会 | Wireless power transmission device, method and system |
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| CN110103740B (en) * | 2019-05-21 | 2021-01-15 | 桂林电子科技大学 | Control method of wireless dynamic charging system of electric automobile |
| CN110518717A (en) * | 2019-09-05 | 2019-11-29 | 北京交通大学 | Information interactive device and method based on non-contact power transmission system |
| CN111731119B (en) * | 2020-06-30 | 2021-12-21 | 盐城欢创科技有限公司 | Wireless charging mobile device for new energy automobile |
| CN112319254B (en) * | 2020-10-27 | 2022-08-30 | 河北工业大学 | Electric automobile wireless charging secondary robustness control system capable of selecting charging mode |
| CN112583097A (en) * | 2020-11-25 | 2021-03-30 | 国网浙江省电力有限公司杭州供电公司 | Wireless charging pile combined with new energy power generation system |
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