CN108819748A - A kind of wireless charging system for electric automobile - Google Patents
A kind of wireless charging system for electric automobile Download PDFInfo
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- CN108819748A CN108819748A CN201810608307.8A CN201810608307A CN108819748A CN 108819748 A CN108819748 A CN 108819748A CN 201810608307 A CN201810608307 A CN 201810608307A CN 108819748 A CN108819748 A CN 108819748A
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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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- 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
- H02J50/80—Circuit arrangements or systems for wireless supply or distribution of electric power involving the exchange of data, concerning supply or distribution of electric power, between transmitting devices and receiving devices
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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
-
- 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
-
- 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
-
- 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)
- Computer Networks & Wireless Communication (AREA)
- Power Engineering (AREA)
- Charge And Discharge Circuits For Batteries Or The Like (AREA)
Abstract
The present embodiments relate to a kind of wireless charging system for electric automobile, including：Electric energy wireless transmission subsystem and electric energy wireless reception sub-system；Electric energy wireless transmission subsystem includes power supply, electric energy transfer device and transmitting coil；Electric energy wireless reception sub-system includes receiving coil, electric energy reception device and battery；The surface or underground in region shared by parking stall is arranged in transmitting coil；The side of electric car is arranged in receiving coil；Electric energy is transferred to electric energy transfer device by power supply, electric energy transfer device transmits electrical power to transmitting coil, and transmitting coil converts electrical energy into magnetic energy and emits magnetic energy, and receiving coil receives magnetic energy and is converted to electric energy, electric energy is transferred to battery by electric energy reception device, and battery obtains electric energy and completes charging.The embodiment of the present invention wirelessly realizes the appearance for reducing the problems such as mechanical wear, contact loss occur for system without the energy transfer process under electrical connection, becomes easy the maintenance of system, operation.
Description
Technical field
The present embodiments relate to electric vehicle engineering fields, and in particular to a kind of wireless charging system for electric automobile.
Background technique
The main reason for Development of Electric Vehicles is requirements at the higher level of the shortage of the energy with people to quality of life.World energy sources
The energy consumption of automobile just accounts for nearly a quarter in wastage in bulk or weight.And the quantity of automobile is being continuously increased, so as to cause
Energy and environmental problem is with regard to more serious.
The influence of oil crisis makes developed country take the lead in carrying out the exploitation of power-saving technology, and the energy consumption of branch of industry is stopped
Stay in total energy consumption 50% is horizontal.Due to transportation department's fast development, the consumption of energy source of car is much higher than other departments,
Account for the 24% of total energy consumption.Traditional automobile is because of containing hazardous substance such as CO, HC and NOX, these harmful substances in tail gas
The mankind and environment can be caused great harm, therefore the mankind will face more challenges.The world today face the energy and
Before the Double jeopardy of environment, automobile industry must be required to improve energy source of car service efficiency, pollutant is reduced with this.But
Only solve the problems, such as that this is very very difficult by improving the performance of diesel locomotive.National governments and Automobile Enterprises are generally recognized
Know energy conservation and emission reduction is the main direction of future automobile technology development, Development of EV will solve the two technical problems
Optimal path.
Key technology of the power battery charging technology as electric vehicle development has the development and popularization of electric car
Vital effect.Traditional electric vehicle charging mode be it is plug-in, limit by electric interfaces and charging pile quantity, with a period of time
In be only one or several electric cars charge.In addition, installing plug-in charging pile occupies additional place, land used lance
Shield makes the quantity of charging pile very limited, limits being widely applied for electric car.
On the other hand, no doubt plug-in charging pile has comprehensively considered many safeguard measures in design, but exposed
Charging plug still has security risk, and by taking direct current quick charge stake as an example, when its work, output voltage is up to hundreds of volts,
More than the tens of peaces of electric current, when charging, needs special messenger that could complete charging process using professional protective gear；Exposed interface must also
The problems such as so there are waterproof and dustproofs, inevitable generating system failure are brought a large amount of maintenances, service work, are further resulted in slotting
The universal of electric-type charging pile is restricted.
On the other hand, plug-in charging pile is individually present, and does not form a complete system, without always being controlled
System, investigation failure are time-consuming and laborious.
Summary of the invention
It is of the existing technology in order to solve the problems, such as, at least one embodiment of the present invention provide a kind of electric car without
Line charge electric system.
For this purpose, the embodiment of the present invention provides a kind of wireless charging system for electric automobile, the system comprises：Electric energy without
Line emits subsystem and electric energy wireless reception sub-system；
The electric energy wireless transmission subsystem includes power supply, electric energy transfer device and transmitting coil；The electric energy wirelessly connects
Receiving subsystem includes receiving coil, electric energy reception device and battery；
The surface or underground in region shared by parking stall is arranged in the transmitting coil；The receiving coil is arranged electronic
The side of automobile；
Electric energy is transferred to the electric energy transfer device by the power supply, and the electric energy transfer device transmits electrical power to described
Transmitting coil, the transmitting coil convert electrical energy into magnetic energy and emit magnetic energy, and the receiving coil receives the magnetic energy and turns
It is changed to electric energy, the electric energy is transferred to the battery by the electric energy reception device, and the battery obtains the electric energy completion and fills
Electricity.
Optionally, the electric energy transfer device, including：
Oscillator, impedance matching circuit and power amplification circuit；
The oscillator generates oscillating current after obtaining the electric energy that the power supply exports, and the oscillating current successively passes through institute
Enter the transmitting coil after stating impedance matching circuit and the power amplification circuit, the transmitting coil issues magnetic energy.
Optionally, the electric energy reception device, including：
Rectification circuit, filter circuit and charge adjustment circuit；
The receiving coil is converted to electric energy after receiving magnetic energy and exports oscillating current, and the rectification circuit obtains the vibration
DC current is exported after swinging electric current, the DC current enters the charge adjustment circuit after the filter circuit, described
The DC current is adjusted to the charging current of the battery by charge adjustment circuit, and described in the output of preset charging voltage
Charging current, the battery obtain the charging current and complete charging.
Optionally, the electric energy wireless reception sub-system further includes：Detector and the first wireless communication module；The electricity
Can wireless transmission subsystem further include：Controller and the second wireless communication module；
The DC current of the output of filter circuit described in the detector acquisition and filling for charge adjustment circuit output
Electric current and charging voltage generate detection information, and send the detection information by first wireless communication module；It is described
Controller receives the detection information by second wireless communication module, and controls the oscillation according to the detection information
The frequency of oscillation of device.
Optionally, the controller controls the frequency of oscillation of the oscillator according to the detection information, including：
The controller determines the DC current and the charging that the filter circuit exports according to the detection information
The charging current for adjusting circuit output, according to the DC current and charging current generation frequency control information, and according to
The frequency control information controls the frequency of oscillation of the oscillator.
Optionally, the controller generates frequency control information according to the DC current and the charging current, including：
The controller calculates the difference of the DC current Yu the charging current, and takes the difference as the frequency
Rate control information.
Optionally, the controller controls the frequency of oscillation of the oscillator according to the frequency control information, including：
The controller judges whether the absolute value of the difference is greater than preset threshold, if more than preset threshold, then judges
Whether the difference is greater than zero, if more than zero, then increases the frequency of oscillation of the oscillator, if reducing the vibration less than zero
Swing the frequency of oscillation of device.
Optionally, the controller increases the frequency of oscillation of the oscillator and includes：The controller is by the oscillator
Current oscillating frequency increase predeterminated frequency；
The frequency of oscillation that the controller reduces the oscillator includes：The controller is by the current vibration of the oscillator
It swings frequency and reduces predeterminated frequency.
Optionally, the electric energy wireless transmission subsystem further includes：Soft switch circuit and pressure sensor；
The soft switch circuit is arranged between the power supply and the oscillator, and the soft switch circuit and the pressure
Force snesor is connect with the controller respectively；
The controller obtains the data of the pressure sensor, judges whether parking stall stops into vehicle, if so, described
Controller sends open signal to the soft switch circuit, if it is not, then the controller is turned off to soft switch circuit transmission
Signal；Soft switch circuit no-voltage after receiving the open signal is opened or zero current turning-on, so that the oscillation
Device obtains the electric energy of the power supply output.
Optionally, the electric energy wireless transmission subsystem further includes：Monitoring device；
The controller is connect with the monitoring device；
The detection information is sent to the monitoring device by the controller, and the monitoring device is believed according to the detection
Breath determines the DC current of the filter circuit output and the charging current and charging voltage of charge adjustment circuit output,
And show the DC current, charging current and the charging voltage.
As it can be seen that wirelessly realizing at least one embodiment of the embodiment of the present invention without under electrical connection
Energy transfer process reduces the appearance for the problems such as mechanical wear, contact loss occur for system, becomes the maintenance of system, operation
It must be easy.
Further, wirelessly, without occupying additional fabricating yard, user's parking can activation system be vehicle
Charging.
Further, compared to plug-in charging modes, wirelessly, monitoring device can monitor all charging systems
State, find failure system in time.
Detailed description of the invention
In order to illustrate the technical solution of the embodiments of the present invention more clearly, below will be in embodiment or description of the prior art
Required attached drawing is briefly described, it should be apparent that, the accompanying drawings in the following description is only some realities of the invention
Example is applied, it for those of ordinary skill in the art, without any creative labor, can also be attached according to these
Figure obtains other attached drawings.
Fig. 1 is a kind of wireless charging system for electric automobile schematic diagram provided in an embodiment of the present invention.
Specific embodiment
In order to make the object, technical scheme and advantages of the embodiment of the invention clearer, below in conjunction with the embodiment of the present invention
In attached drawing, technical scheme in the embodiment of the invention is clearly and completely described, it is clear that described embodiment is
A part of the embodiments of the present invention, instead of all the embodiments.Based on the embodiments of the present invention, ordinary skill people
Member's every other embodiment obtained without making creative work, shall fall within the protection scope of the present invention.
It should be noted that, in this document, the relational terms of such as " first " and " second " or the like are used merely to one
A entity or operation with another entity or operate distinguish, without necessarily requiring or implying these entities or operation it
Between there are any actual relationship or orders.
In a first aspect, the system can wrap as shown in Figure 1, the present embodiment discloses a kind of wireless charging system for electric automobile
It includes：Electric energy wireless transmission subsystem 1 and electric energy wireless reception sub-system 2.
Electric energy wireless transmission subsystem 1 includes power supply 11, electric energy transfer device 12 and transmitting coil 13；Electric energy wireless receiving
Subsystem 2 includes receiving coil 14, electric energy reception device 15 and battery 16.
The surface or underground in region shared by parking stall is arranged in transmitting coil 13；Receiving coil 14 is arranged in electric car
Side.
Charging process is described as follows：
Electric energy is transferred to electric energy transfer device 12 by power supply 11, and electric energy transfer device 12 transmits electrical power to transmitting coil
13, transmitting coil 13 converts electrical energy into magnetic energy and emits magnetic energy, and receiving coil 14 receives magnetic energy and is converted to electric energy, and electric energy connects
Electric energy is transferred to battery 16 by receiving apparatus 15, and battery 16 obtains electric energy and completes charging.
In the present embodiment, power supply 11 can obtain electric energy from power grid and export electric energy, and power supply 11 and electric energy transfer device 12
The underground that may be provided at region shared by parking stall, without occupying additional place.
In the present embodiment, electric energy reception device 15 and battery 16 are arranged inside electric car.
As it can be seen that wireless charging system for electric automobile disclosed in the present embodiment, wirelessly realizes no electrical connection
Under energy transfer process, reduce system occur mechanical wear, contact loss the problems such as appearance, make system maintenance, behaviour
It becomes easy.
Further, wirelessly, without occupying additional fabricating yard, user's parking can activation system be vehicle
Charging.
In a specific example, electric energy transfer device 12, including：Oscillator, impedance matching circuit and power amplification
Circuit.
In the present embodiment, oscillator generates oscillating current after obtaining the electric energy that power supply 11 exports, and oscillating current successively passes through
Enter transmitting coil 13 after impedance matching circuit and power amplification circuit, transmitting coil 13 issues magnetic energy.
In the present embodiment, the oscillating current that oscillator generates is high frequency oscillating current, oscillator, impedance matching circuit and function
Rate amplifying circuit can continue to use available circuit, and this embodiment is not repeated.
In the present embodiment, after oscillating current enters transmitting coil 13, non-radiative magnetic field is formed around transmitting coil 13, it is real
Now convert electric energy to magnetic energy.
Based on a upper example, in the present embodiment, electric energy reception device 15, including：Rectification circuit, filter circuit and charging
Adjust circuit.
In the present embodiment, receiving coil 14 is converted to electric energy after receiving magnetic energy and exports oscillating current, and rectification circuit obtains
DC current is exported after oscillating current, DC current enters charge adjustment circuit after filter circuit, and charge adjustment circuit will
DC current is adjusted to the charging current of battery 16, and exports charging current with preset charging voltage, and battery 16 obtains charging
Electric current completes charging.
In the present embodiment, when the intrinsic frequency of receiving coil 14 is identical with the wave frequency received, receiving coil 14
Output oscillating current is strongest, the conversion of realization magnetic energy to electric energy.
In the present embodiment, rectification circuit and filter circuit can continue to use available circuit, and this embodiment is not repeated.
In the present embodiment, the function of charge adjustment circuit is to realize constant pressure and flow output, meets the charging current of battery 16
And various ways can be used in charging voltage, the specific implementation of charge adjustment circuit, as long as being able to achieve above-mentioned function, this implementation
Example repeats no more.
Based on a upper example, in the present embodiment, electric energy wireless reception sub-system 2 further includes：Detector and the first nothing
Line communication module；Electric energy wireless transmission subsystem 1 further includes：Controller and the second wireless communication module.
In the present embodiment, the DC current of detector acquisition filter circuit output and the charging of charge adjustment circuit output
Electric current and charging voltage generate detection information, and send detection information by the first wireless communication module；Controller passes through second
Wireless communication module receives detection information, and the frequency of oscillation of oscillator is controlled according to detection information.
In the present embodiment, detection information is fed back by the detector of electric energy wireless reception sub-system 2, so that electric energy is wirelessly sent out
The controller for penetrating subsystem 1 can control the frequency of oscillation of oscillator, reduce the work load of charge adjustment circuit.
Based on a upper example, in the present embodiment, controller controls the frequency of oscillation of oscillator according to detection information, specifically
It is described as follows：
Controller determines the DC current of filter circuit output and filling for charge adjustment circuit output according to detection information
Electric current generates frequency control information according to DC current and charging current, and controls oscillator according to frequency control information
Frequency of oscillation.
Based on a upper example, in the present embodiment, controller generates frequency control letter according to DC current and charging current
Breath, is described in detail below：
Controller calculates the difference of DC current and charging current, and takes the difference as frequency control information.
Based on a upper example, in the present embodiment, controller controls the frequency of oscillation of oscillator according to frequency control information,
It is described in detail below：
Controller judges whether the absolute value of difference is greater than preset threshold, if more than preset threshold, then whether judges difference
Greater than zero, if more than zero, then increase the frequency of oscillation of oscillator, if reducing the frequency of oscillation of oscillator less than zero.
In the present embodiment, if controller judges that the absolute value of difference no more than preset threshold, does not change the vibration of oscillator
Swing frequency.
Based on a upper example, in the present embodiment, the frequency of oscillation that controller increases oscillator includes：Controller will vibrate
The current oscillating frequency of device increases predeterminated frequency.
Controller reduce oscillator frequency of oscillation include：The current oscillating frequency of oscillator is reduced default frequency by controller
Rate.
In the present embodiment, predeterminated frequency can not limit the specific value of predeterminated frequency determines according to actual conditions herein.
In a specific example, electric energy wireless transmission subsystem 1 may also include：Soft switch circuit and pressure sensing
Device.
In the present embodiment, soft switch circuit is arranged between power supply 11 and oscillator, and soft switch circuit and pressure sensing
Device is connect with controller respectively.
In the present embodiment, controller obtains the data of pressure sensor, judges whether parking stall stops into vehicle, if so,
Controller to soft switch circuit send open signal, if it is not, then controller to soft switch circuit send cut-off signals；Sofe Switch electricity
Road no-voltage after receiving open signal is opened or zero current turning-on, so that oscillator obtains the electric energy that power supply 11 exports.
In the present embodiment, soft switch circuit can continue to use available circuit, and details are not described herein.
In the present embodiment, using soft switch circuit, power loss not only increases the efficiency of transmission of system close to zero,
Also reduce the fever of soft switch circuit and the interference of electromagnetism.
In a specific example, electric energy wireless transmission subsystem 1 may also include：Monitoring device.
In the present embodiment, controller is connect with monitoring device.
In the present embodiment, controller will test information and be sent to monitoring device, and monitoring device is determined according to detection information and filtered
Wave circuit output DC current and charge adjustment circuit output charging current and charging voltage, and show DC current,
Charging current and charging voltage.
In the present embodiment, the connection type of controller and monitoring device is wired connection, for example, RS485 connection or
RS232 connection.
In the present embodiment, staff can be intuitive to see data by monitoring device, facilitate staff's management, statistics
And breakdown maintenance.
As it can be seen that wireless charging system for electric automobile disclosed in the present embodiment, compared to plug-in charging modes, by wireless
Mode, monitoring device can monitor the state of all charging systems, find failure system in time.
It will be appreciated by those of skill in the art that although some embodiments described herein include other embodiments is wrapped
Certain features for including rather than other feature, but the combination of the feature of different embodiments means within the scope of the invention
And form different embodiments.
Although the embodiments of the invention are described in conjunction with the attached drawings, but those skilled in the art can not depart from this hair
Various modifications and variations are made in the case where bright spirit and scope, such modifications and variations are each fallen within by appended claims
Within limited range.
Claims (10)
1. a kind of wireless charging system for electric automobile, which is characterized in that the system comprises：Electric energy wireless transmission subsystem and electricity
It can wireless reception sub-system；
The electric energy wireless transmission subsystem includes power supply, electric energy transfer device and transmitting coil；Electric energy wireless receiving
System includes receiving coil, electric energy reception device and battery；
The surface or underground in region shared by parking stall is arranged in the transmitting coil；The receiving coil is arranged in electric car
Side；
Electric energy is transferred to the electric energy transfer device by the power supply, and the electric energy transfer device transmits electrical power to the transmitting
Coil, the transmitting coil convert electrical energy into magnetic energy and emit magnetic energy, and the receiving coil receives the magnetic energy and is converted to
The electric energy is transferred to the battery by electric energy, the electric energy reception device, and the battery obtains the electric energy and completes charging.
2. system according to claim 1, which is characterized in that the electric energy transfer device, including：
Oscillator, impedance matching circuit and power amplification circuit；
The oscillator generates oscillating current after obtaining the electric energy that the power supply exports, and the oscillating current successively passes through the resistance
Enter the transmitting coil after anti-match circuit and the power amplification circuit, the transmitting coil issues magnetic energy.
3. system according to claim 2, which is characterized in that the electric energy reception device, including：
Rectification circuit, filter circuit and charge adjustment circuit；
The receiving coil is converted to electric energy after receiving magnetic energy and exports oscillating current, and the rectification circuit obtains the oscillation electricity
DC current is exported after stream, the DC current enters the charge adjustment circuit, the charging after the filter circuit
The charging current that the DC current is adjusted to the battery by circuit is adjusted, and the charging is exported with preset charging voltage
Electric current, the battery obtain the charging current and complete charging.
4. system according to claim 3, which is characterized in that the electric energy wireless reception sub-system further includes：Detector
And first wireless communication module；The electric energy wireless transmission subsystem further includes：Controller and the second wireless communication module；
The DC current of the output of filter circuit described in the detector acquisition and the charging electricity of charge adjustment circuit output
Stream and charging voltage generate detection information, and send the detection information by first wireless communication module；The control
Device receives the detection information by second wireless communication module, and controls the oscillator according to the detection information
Frequency of oscillation.
5. system according to claim 4, which is characterized in that the controller controls the vibration according to the detection information
The frequency of oscillation of device is swung, including：
The controller determines that the DC current of the filter circuit output and the charging are adjusted according to the detection information
The charging current of circuit output generates frequency control information according to the DC current and the charging current, and according to described
Frequency control information controls the frequency of oscillation of the oscillator.
6. system according to claim 5, which is characterized in that the controller is according to the DC current and the charging
Electric current generates frequency control information, including：
The controller calculates the difference of the DC current Yu the charging current, and takes the difference as the frequency control
Information processed.
7. system according to claim 6, which is characterized in that the controller controls institute according to the frequency control information
The frequency of oscillation of oscillator is stated, including：
The controller judges whether the absolute value of the difference is greater than preset threshold, if more than preset threshold, then described in judgement
Whether difference is greater than zero, if more than zero, then increases the frequency of oscillation of the oscillator, if reducing the oscillator less than zero
Frequency of oscillation.
8. system according to claim 7, which is characterized in that the controller increases the frequency of oscillation packet of the oscillator
It includes：The current oscillating frequency of the oscillator is increased predeterminated frequency by the controller；
The frequency of oscillation that the controller reduces the oscillator includes：The controller is by the current oscillation frequency of the oscillator
Rate reduces predeterminated frequency.
9. system according to claim 4, which is characterized in that the electric energy wireless transmission subsystem further includes：Sofe Switch
Circuit and pressure sensor；
The soft switch circuit is arranged between the power supply and the oscillator, and the soft switch circuit and the pressure pass
Sensor is connect with the controller respectively；
The controller obtains the data of the pressure sensor, judges whether parking stall stops into vehicle, if so, the control
Device to the soft switch circuit send open signal, if it is not, then the controller to the soft switch circuit send cut-off signals；
Soft switch circuit no-voltage after receiving the open signal is opened or zero current turning-on, so that the oscillator obtains
The electric energy of the power supply output.
10. system according to claim 4, which is characterized in that the electric energy wireless transmission subsystem further includes：Monitoring is set
It is standby；
The controller is connect with the monitoring device；
The detection information is sent to the monitoring device by the controller, and the monitoring device is true according to the detection information
The DC current of the fixed filter circuit output and the charging current and charging voltage of charge adjustment circuit output, and show
Show the DC current, charging current and the charging voltage.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201810608307.8A CN108819748B (en) | 2018-06-13 | 2018-06-13 | Wireless charging system of electric automobile |
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|---|---|---|---|
| CN201810608307.8A CN108819748B (en) | 2018-06-13 | 2018-06-13 | Wireless charging system of electric automobile |
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| CN108819748A true CN108819748A (en) | 2018-11-16 |
| CN108819748B CN108819748B (en) | 2021-02-02 |
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Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN109334480A (en) * | 2018-11-22 | 2019-02-15 | 国网江苏省电力有限公司南通供电分公司 | A kind of wireless charging system for electric automobile and its charging method |
| CN109649193A (en) * | 2018-12-17 | 2019-04-19 | 华人运通控股有限公司 | Charging system and charging method |
| CN111823892A (en) * | 2020-07-21 | 2020-10-27 | 长安大学 | Automatic switch device for wireless charging coil of electric automobile and control method |
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| CN109334480A (en) * | 2018-11-22 | 2019-02-15 | 国网江苏省电力有限公司南通供电分公司 | A kind of wireless charging system for electric automobile and its charging method |
| CN109649193A (en) * | 2018-12-17 | 2019-04-19 | 华人运通控股有限公司 | Charging system and charging method |
| CN111823892A (en) * | 2020-07-21 | 2020-10-27 | 长安大学 | Automatic switch device for wireless charging coil of electric automobile and control method |
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