CN110912279A - Wireless power supply device for electric automobile and power supply method thereof - Google Patents
Wireless power supply device for electric automobile and power supply method thereof Download PDFInfo
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- CN110912279A CN110912279A CN201911130896.4A CN201911130896A CN110912279A CN 110912279 A CN110912279 A CN 110912279A CN 201911130896 A CN201911130896 A CN 201911130896A CN 110912279 A CN110912279 A CN 110912279A
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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
- H02J50/12—Circuit arrangements or systems for wireless supply or distribution of electric power using inductive coupling of the resonant type
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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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- 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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- 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
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- Engineering & Computer Science (AREA)
- Power Engineering (AREA)
- Computer Networks & Wireless Communication (AREA)
- Transportation (AREA)
- Mechanical Engineering (AREA)
- Charge And Discharge Circuits For Batteries Or The Like (AREA)
- Electric Propulsion And Braking For Vehicles (AREA)
Abstract
The invention discloses a wireless power supply device for an electric automobile and a power supply method thereof, wherein the wireless power supply device for the electric automobile comprises a vehicle-mounted receiving end, a wireless charging station and a wireless charging device, wherein electric energy is transmitted to the vehicle-mounted receiving end, so that the damage caused by mechanical abrasion and cable dragging during the use of the wired charging device is effectively avoided, the safety problems of electric sparks, electric leakage and the like caused by poor contact are also avoided, meanwhile, charging equipment on the ground of the charging station is saved, the wireless charging transmitting end is buried underground, the space and the fund are saved, and the occurrence of the automobile offset phenomenon is solved through an automobile correction device.
Description
Technical Field
The invention relates to a wireless power supply device for an electric automobile, in particular to a wireless power supply device for an electric automobile and a power supply method thereof.
Background
At present, most of electric automobiles adopt a wired conduction type charging mode, and the charging mode has many defects: the non-uniform interface of the charging pile makes it difficult to realize the uniform charging of various electric automobiles; the time is long, so that equipment and cables are aged and damaged, and the maintenance cost is increased; the number of charging piles is limited, so that the simultaneous charging of a large number of electric automobiles is difficult to meet; generally, when the electric automobile is charged, 220V or 380V mains supply power electricity is connected, sparks or electric leakage is easily generated in rainy and snowy weather, and potential safety hazards are large. The above reasons greatly limit the popularization and development of wired charging of electric vehicles.
Disclosure of Invention
The purpose of the invention is as follows: a wireless power supply device for an electric automobile and a power supply method thereof are provided to solve the problems in the prior art.
The technical scheme is as follows: a wireless power supply device for an electric vehicle, comprising: the high-frequency inverter circuit comprises a high-frequency inverter circuit module, a resonance compensation module connected with the high-frequency inverter circuit module, a magnetic coupling mechanism connected with the resonance compensation module, and a receiving circuit selection module connected with the magnetic coupling mechanism.
In a further example, the high frequency inverter circuit module includes a high frequency inverter circuit including a triode Q1, a triode Q2, a triode Q3, a triode Q4, a diode D1, a diode D2, a diode D3, a diode D4, a transformer T1, a capacitor C1; a positive electrode of the capacitor C1 is connected to a collector of the triode Q1, a negative electrode of the diode D1, a collector of the triode Q2, and a negative electrode of the diode D2, one end of the transformer T1 is connected to an emitter of the triode Q1 and a positive electrode of the diode D1, the other end of the transformer T1 is connected to a negative electrode of the diode D4 and a collector of the triode Q4, and a negative electrode of the capacitor C1 is connected to an emitter of the triode Q3, a positive electrode of the diode D3, an emitter of the triode Q4, and a positive electrode of the diode D4.
In a further example, the magnetic coupling mechanism includes a transmitting end and a receiving end; the electric energy storage device of the electric automobile is wirelessly connected to a power grid to charge electric energy. In the wireless charging process, direct electrical contact is avoided, and wireless energy transfer is realized between the transmitting device and the receiving device in a magnetic field energy coupling mode. The wireless charging of the electric automobile is a novel charging mode which is green, environment-friendly, flexible and convenient.
In a further example, the transmitting end includes a housing, a transmitting coil embedded within the housing.
In a further example, the transmitting coil is in a square planar spiral configuration.
In a further example, the circumference of transmitting coil is equipped with aluminum plate, aluminum plate's length direction is equipped with the car correcting unit that can adjust electric automobile position.
In a further example, the automobile correction device includes a centering base screwed on the aluminum plate, a first slide rail and a second slide rail fixedly mounted on the centering base and located on the left and right sides of the centering base, a first centering plate slidably mounted on the first slide rail, a second centering plate slidably mounted on the second slide rail, a centering rotary bottom plate fixedly mounted at the center of the centering base, a rotary bearing seat fixedly mounted at the center of the centering rotary bottom plate, a centering rotary shaft mounted on the central shaft of the rotary bearing seat in an interference fit manner, a rotary arm mounted at one end of the centering rotary shaft by a bolt, a first centering pull rod mounted at one end of the rotary arm by a bolt, and the other end of the first centering pull rod is connected to the transverse center line of the first centering plate, the other end of the second centering pull rod is connected to the transverse center line of the second centering middle plate, the bolt is installed on the second centering pull rod at the other end of the rotating arm, and the adjusting cylinder is fixedly installed on the centering base, located on two sides of the centering rotating bottom plate and connected with the end portion of the first centering middle plate through the telescopic end.
In a further example, at least 6 centering rods are screwed on the first pair of middle plates and the second pair of middle plates, and bearing plates are arranged on the centering rods.
In a further example, an operating method of a wireless power supply device for an electric vehicle includes the steps of:
3, obtaining high-frequency square wave alternating current by the direct current through a high-frequency inverter;
and 7, performing constant-current charging on the obtained direct current to a lithium battery pack of the automobile through a DC-DC conversion module until the charging is finished.
Has the advantages that: the invention discloses a wireless power supply device for an electric automobile, which effectively avoids the mechanical abrasion and the damage caused by the dragging of a cable when a wired charging device is used and also avoids the safety problems of electric sparks, electric leakage and the like caused by poor contact by transmitting electric energy to a vehicle-mounted receiving end, simultaneously saves charging equipment on the ground of a charging station, buries the wireless charging transmitting end underground, and saves space and fund.
Drawings
Fig. 1 is a schematic diagram of wireless charging according to the present invention.
Fig. 2 is a schematic diagram of a high-frequency inverter circuit according to the present invention.
FIG. 3 is a schematic structural diagram of the calibration device of the present invention.
Fig. 4 is a partially enlarged view of the automobile correction device of the present invention.
Fig. 5 is a schematic diagram of the structure of the transmitting coil in the present invention.
The reference signs are: the high-frequency inverter circuit comprises a high-frequency inverter circuit module 1, a resonance compensation module 2, a magnetic coupling mechanism 3, a receiving circuit selection module 4, a shell 5, a transmitting end 6, a receiving end 7, a transmitting coil 8, an automobile correction device 9, a centering base 901, a first sliding rail 902, a second sliding rail 903, a first pair of middle plates 904, a second pair of middle plates 905, a centering rotating bottom plate 906, a rotating shaft bearing 907, a rotating shaft bearing 908, a rotating arm 909, a first pair of middle pull rods 910, a second pair of middle pull rods 911, an adjusting cylinder 912, a centering rod 913, a bearing plate 914 and an aluminum plate 12.
Detailed Description
Through the research and analysis of the applicant, the charging mode of the electric automobile in the prior art mostly adopts the limited charging mode of the charging pile to carry out charging, and the charging mode has a plurality of defects: the non-uniform interface of the charging pile makes it difficult to realize the uniform charging of various electric automobiles; the time is long, so that equipment and cables are aged and damaged, and the maintenance cost is increased; the number of charging piles is limited, so that the simultaneous charging of a large number of electric automobiles is difficult to meet; the electric vehicle is generally connected with 220V or 380V mains supply power electricity during charging, sparks or electric leakage is easily generated in rainy and snowy weather, the potential safety hazard is large, and the popularization and development of wired charging of the electric vehicle are greatly limited due to the reasons. In light of these problems, the applicant proposes a wireless power supply device for an electric vehicle, and the specific solution is as follows.
As shown in fig. 1, a wireless power supply device for an electric vehicle is composed of a high-frequency inverter circuit module 1, a resonance compensation module 2, a magnetic coupling mechanism 3, a receiving circuit selection module 4, and the like, wherein the resonance compensation module 2 is connected with the high-frequency inverter circuit module 1, the magnetic coupling mechanism 3 is connected with the resonance compensation module 2, and the receiving circuit selection module 4 is connected with the magnetic coupling mechanism 3; the electric energy launches on-vehicle contact end from ground, and the transfer process obtains the direct current through inputing the power frequency current to rectification filter module, obtains the wave alternating current point of high frequency from the direct current through high frequency inverter circuit module 1, makes transmitting coil 8 and receiving coil's frequency equal through resonance compensation module 2 and produces magnetic resonance, and transmitting coil 8 converts the alternating current into magnetic field energy, then in transmitting to receiving circuit selection module 4 through air medium, and then charges to the lithium cell group of car. Mechanical wear and damage caused by cable dragging when the charging device is used are effectively avoided, safety problems such as electric sparks and electric leakage caused by poor contact are also avoided, meanwhile, charging equipment on the ground of a charging station is omitted, the wireless charging transmitting terminal 6 is buried underground, and space and fund are saved.
The high-frequency inverter circuit module 1 comprises a high-frequency inverter circuit, a power supply and a control circuit, wherein the high-frequency inverter circuit comprises a triode Q1, a triode Q2, a triode Q3, a triode Q4, a diode D1, a diode D2, a diode D3, a diode D4, a transformer T1 and a capacitor C1; the positive electrode of the capacitor C1 is connected to the collector of the triode Q1, the negative electrode of the diode D1, the collector of the triode Q2, and the negative electrode of the diode D2, one end of the transformer T1 is connected to the emitter of the triode Q1 and the positive electrode of the diode D1, the other end of the transformer T1 is connected to the negative electrode of the diode D4 and the collector of the triode Q4, the negative electrode of the capacitor C1 is connected to the emitter of the triode Q3, the positive electrode of the diode D3, the emitter of the triode Q4, and the positive electrode of the diode D4, wherein the diodes D1, D2, D3, and D4 are connected in an anti-parallel manner, and the transistors Q1, the triode Q2, the triode Q3, and the triode Q4 adopt a PWM control manner, when the first half cycle of the transformer T34 is turned on, assuming that the first half cycle of the first period of the transformer T1 is on, the duty ratio is Dy, Dy = Ti/(t/2) is the second half period of the transformer, the triode Q1 and the triode Q4 are conducted, the pulse width of the voltage is adjusted, and the effective value of the voltage is adjusted, an actual converter circuit is realized, the conduction time of the triode Q1 and the triode Q4 and the conduction time of the triode Q2 and the triode Q3 cannot be completely the same, the converter cannot be normal due to the fact that the direct current magnetization is saturated under the condition that the resistance of the primary winding of the high-frequency transformer is small and the direct current component is acted for a long time, therefore, the collector of the triode Q1 and the collector of the triode Q2 in the circuit are connected with the capacitor C1 in series, the alternating current voltage on the capacitor C1 is used for voltage division, the capacitor C1 is used for bearing the direct current voltage component, and the definite positive or negative direct current component is used for reducing the conduction time of the triode Q1 and the triode Q4 or the triode Q2 and the triode Q3, the direct current component is reduced, when the voltage of the input power supply is equal, the voltage of the high-frequency inverter circuit is doubled, the high-power inverter circuit is more suitable for places with high power, and the circuit is more suitable because the wireless power supply of the electric automobile requires large transmission power.
The magnetic coupling mechanism 3 comprises a transmitting end 6, a receiving end 7, a shell 5, a transmitting coil 8, an aluminum plate 12 and an automobile correction device 9; the shell sets up on wireless charging area's subaerial, transmitting coil 8 inlays the inside of casing 5, aluminum plate 12 fixed mounting is in transmitting coil 8's circumference, car correcting unit 9 sets up aluminum plate 12's length direction. The wireless charging method is characterized in that wireless power transmission is carried out through the wireless charging transmitting terminal 6 and the vehicle-mounted receiving terminal 7 with the same resonant frequency, direct electrical contact is avoided in the wireless charging process, and wireless energy transmission is achieved between the transmitting device and the receiving device in a magnetic field energy coupling mode. The wireless charging of electric automobile is a green, nimble convenient novel charging mode, and the wireless in-process can produce the electromagnetic field of high frequency simultaneously, and the radiation that receives the electromagnetic field for a long time can the human body experience be love, and the diffusion of electromagnetic field also can reduce transmission efficiency simultaneously to when the magnetic field entered into the electric automobile chassis, thereby will produce the inside relevant electronic equipment of eddy current loss influence electric automobile, consequently be in the aluminum plate 12 of one deck has been added on the magnetic coupling mechanism 3, suppresses the magnetic field around the coil through aluminum plate 12, has strengthened the intensity between the coil simultaneously.
At present, the wireless charging coils are of two types, one type is a space spiral type, the other type is a plane spiral type, the space spiral type is long in vertical distance, the slower the magnetic field intensity is reduced, the coupling coefficient is increased by a large area, the plane spiral type does not need to occupy space, and the maximum coupling coefficient of small-size falling can be achieved.
As a preferred scheme, the transmitting coil 8 adopts a planar square spiral structure.
In the early stage of the wireless charging process, a driver needs to stop the automobile in a designated area, the parking state is not consistent and is normal in the parking process, and the automobile correction device 9 is arranged in the length direction of the aluminum plate 12.
As shown in fig. 3 and 4, the automobile calibration device 9 includes a centering base 901, a first slide rail 902, a second slide rail 903, a first centering plate 904, a second centering plate 905, a centering rotary bottom plate 906, a rotary bearing seat 907, a rotary bearing seat 908, a rotary arm 909, a first centering rod 910, a second centering rod 911, an adjusting cylinder 912, a centering rod 913, and a bearing plate 914; the centering base 901 is screwed on the aluminum plate 12, the first sliding rail 902 is fixedly installed on the centering base 901 and located on the left side of the centering base 901, the second sliding rail 903 is fixedly installed on the centering base 901 and located on the right side of the centering base 901, the first middle plate 904 is slidably installed on the first sliding rail 902, the second middle plate 905 is slidably installed on the second sliding rail 903, the centering rotary bottom plate 906 is fixedly installed on the centering base 901 and located at the central position of the centering base 901, the rotary bearing seat 907 is fixedly installed on the centering rotary bottom plate 906 and located at the central position of the centering rotary bottom plate 906, the rotary bearing seat 907 is fixedly installed on the centering rotary bottom plate 906, And is located at the center of the middle rotating base plate, the centering rotating shaft 908 is installed at the central shaft position of the rotating shaft bearing block 907 in an interference fit manner, a rotating arm 909 is bolted at one end of the centering rotating shaft 908, a first centering pull rod 910 is bolted at one end of the rotating arm 909, the other end of the first centering pull rod 910 is connected to the transverse central line of the first centering middle plate 904, the second centering pull rod 911 is bolted at the other end of the rotating arm 909, the other end of the second centering pull rod 911 is connected to the transverse central line position of the second centering middle plate 905, the adjusting cylinder 912 is fixedly installed on the centering base 901 and located at two sides of the centering rotating base plate 906, and the centering rods 913 are vertically and threadedly installed on the first centering middle plate 904 and the second centering middle plate 905 respectively, the bearing plate 914 is mounted on the centering rod 913 through bolts; at least 6 centering rods 913 are provided at the bottom of the bearing plate 914 in order to distribute the weight of the bearing plate 914; the rotation of the rotating arm 909 is driven by the telescopic motion of the adjusting cylinder, since one end of the first middle pull rod 910 and the second middle pull rod 911 is connected to the rotating arm 909, and the other end of the first middle pull rod 910 is connected with the first middle plate 904, the other end of the second middle pull rod 911 is connected with the second middle plate 905, by providing a first sliding rail 902 and a second sliding rail 903 at the bottom of the second pair of middle plates 905 and 905, thereby driving the first middle pull rod 910 to move forward, the second middle pull rod 911 to move backward, thereby carrying the bearing plates 914 which are arranged on the first middle plate pair 904 and the second middle plate pair 905 which are connected together to offset the sleepers of the first sliding rail 902 and the second sliding rail 903 in the longitudinal direction, and then drive the electric automobile above the bearing plate 914 and follow synchronous skew, and then realize carrying out the centering with electric automobile.
The working principle is as follows: when the electric automobile is charged wirelessly, the automobile calibration device 9 calibrates the automobile which deviates from the wireless charging device, the calibration cylinder is started, the telescopic end of the calibration cylinder is driven to stretch and retract to drive the first pair of middle plates 904 to move on the first slide rail 902, and further the first pair of middle rods 910 which are connected with the first pair of middle plates 904 are driven to rotate along the rotating shaft to drive the rotating arm 909 to drive the second pair of middle rods 911 to rotate synchronously, and further the second pair of middle plates 911 drives the second pair of middle plates 905 to move horizontally at the same time on the second slide rail 903 and the first pair of middle rods 913, and further the bearing plate 914 which is connected with the first pair of middle plates 904 and the second pair of middle plates 905 at one end through the middle rods 913 carries out horizontal longitudinal deviation along the first slide rail 902 and the second slide rail 903, and further the deviation work to the electric automobile is completed. After the offset work is finished, the power supply is turned on, and then the power frequency current is input into the rectification filter module to obtain direct current; the direct current passes through a high-frequency inverter to obtain high-frequency square wave alternating current; resonance is generated through the frequency morphology of the resonance compensation module 2 and the transmitting coil 8; the transmitting coil 8 converts the alternating current point into magnetic field energy, and the magnetic field energy is transmitted to the receiving coil through an air medium and rotates into electric energy; and the converted electric energy converts alternating current into direct current through rectification and filtering, and the obtained direct current is subjected to constant current charging for a lithium battery pack of the automobile through a DC-DC conversion module until the charging is finished.
The preferred embodiments of the present invention have been described in detail with reference to the accompanying drawings, however, the present invention is not limited to the specific details of the embodiments, and various equivalent changes can be made to the technical solution of the present invention within the technical idea of the present invention, and these equivalent changes are within the protection scope of the present invention.
Claims (9)
1. The wireless power supply device for the electric automobile is characterized by comprising a high-frequency inverter circuit module, a resonance compensation module connected with the high-frequency inverter circuit module, a magnetic coupling mechanism connected with the resonance compensation module, and a receiving circuit selection module connected with the magnetic coupling mechanism.
2. The wireless power supply device for an electric vehicle according to claim 1, wherein: the high-frequency inverter circuit module comprises a high-frequency inverter circuit; the high-frequency inverter circuit comprises a triode Q1, a triode Q2, a triode Q3, a triode Q4, a diode D1, a diode D2, a diode D3, a diode D4, a transformer T1 and a capacitor C1; a positive electrode of the capacitor C1 is connected to a collector of the triode Q1, a negative electrode of the diode D1, a collector of the triode Q2, and a negative electrode of the diode D2, one end of the transformer T1 is connected to an emitter of the triode Q1 and a positive electrode of the diode D1, the other end of the transformer T1 is connected to a negative electrode of the diode D4 and a collector of the triode Q4, and a negative electrode of the capacitor C1 is connected to an emitter of the triode Q3, a positive electrode of the diode D3, an emitter of the triode Q4, and a positive electrode of the diode D4.
3. The wireless power supply device according to claim 1, wherein the magnetic coupling mechanism includes a transmitting end and a receiving end.
4. The wireless power supply device for an electric vehicle according to claim 3, characterized in that: the transmitting terminal comprises a shell and a transmitting coil embedded in the shell.
5. The wireless power supply device for an electric vehicle according to claim 4, wherein: the transmitting coil adopts a plane square spiral structure.
6. The wireless power supply device for an electric vehicle according to claim 4, wherein: the circumference of transmitting coil is equipped with aluminum plate, aluminum plate's length direction is equipped with the car correcting unit that can adjust the electric automobile position.
7. The wireless power supply device for an electric vehicle according to claim 6, wherein: the automobile correcting device comprises a centering base, a first sliding rail, a second sliding rail, a first middle plate, a second middle plate, a centering rotating bottom plate, a rotating bearing seat, a rotating arm, a first centering pull rod, a second centering pull rod, a bolt, a second centering pull rod and a second centering pull rod, wherein the centering base is in threaded connection with the aluminum plate, the first sliding rail and the second sliding rail are fixedly arranged on the centering base and are positioned on the left side and the right side of the centering base, the first middle plate is arranged on the first sliding rail in a sliding fit mode, the second middle plate is arranged on the second sliding rail in a sliding fit mode, the centering rotating base is fixedly arranged at the center of the centering base, the rotating bearing seat is arranged on the center shaft of the rotating bearing seat in an interference fit mode, the bolt is arranged at one end of, the other end of the second centering pull rod is connected to the transverse center line of the second centering middle plate, and the adjusting cylinder is fixedly installed on the centering base, positioned on two sides of the centering rotating bottom plate and connected with the end part of the first centering middle plate through a telescopic end.
8. The wireless power supply device for an electric vehicle according to claim 7, wherein: at least 6 centering rods are in threaded connection with the upper surfaces of the first middle plate pair and the second middle plate pair, and bearing plates are arranged on the centering rods.
9. The working method of the wireless power supply device for the electric automobile is characterized by comprising the following steps of:
step 1, when an electric automobile is wirelessly charged, correcting the automobile deviated from a wireless charging device through an automobile correcting device, starting through an adjusting cylinder, driving a telescopic end of the adjusting cylinder to stretch and drive a first pair of middle plates to move on a first slide rail, further driving a first centering pull rod connected with the first pair of middle plates to rotate along a rotating shaft to drive a rotating arm to drive a second centering pull rod to synchronously rotate, further driving the second pair of middle plates to horizontally move on a second slide rail and the first centering rod simultaneously, further performing horizontal and longitudinal deviation along the first slide rail and the second slide rail through a bearing plate at one end connected with the first pair of middle plates and the second pair of middle plates through a centering rod, and further finishing the work of correcting the deviation of the electric automobile;
step 2, inputting the power frequency current into a rectification filter module to obtain direct current;
3, obtaining high-frequency square wave alternating current by the direct current through a high-frequency inverter;
step 4, generating resonance through the frequency forms of the resonance compensation module and the transmitting coil;
step 5, converting the alternating current point into magnetic field energy by the transmitting coil, and transmitting the magnetic field energy to the receiving coil through an air medium to rotate into electric energy;
step 6, converting the converted electric energy into direct current through rectification and filtering;
and 7, performing constant-current charging on the obtained direct current to a lithium battery pack of the automobile through a DC-DC conversion module until the charging is finished.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201911130896.4A CN110912279A (en) | 2019-11-19 | 2019-11-19 | Wireless power supply device for electric automobile and power supply method thereof |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201911130896.4A CN110912279A (en) | 2019-11-19 | 2019-11-19 | Wireless power supply device for electric automobile and power supply method thereof |
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| Publication number | Priority date | Publication date | Assignee | Title |
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| CN109120073A (en) * | 2018-09-29 | 2019-01-01 | 上海电机学院 | Wireless electric energy transmission device based on resonance resonance |
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| CN206764618U (en) * | 2017-05-19 | 2017-12-19 | 三祥新材（宁夏）有限公司 | A kind of automatic centering positioning clamping device |
| CN108808883A (en) * | 2017-04-30 | 2018-11-13 | 南京理工大学 | A kind of novel reception device in wireless charging system |
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| CN104583511A (en) * | 2012-08-24 | 2015-04-29 | 株式会社Ihi | Movable parking facility |
| CN108808883A (en) * | 2017-04-30 | 2018-11-13 | 南京理工大学 | A kind of novel reception device in wireless charging system |
| CN206764618U (en) * | 2017-05-19 | 2017-12-19 | 三祥新材（宁夏）有限公司 | A kind of automatic centering positioning clamping device |
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Application publication date: 20200324 |