CN109515220A - A kind of wireless charging device and wireless charging method applied to the double loads of electric car - Google Patents
A kind of wireless charging device and wireless charging method applied to the double loads of electric car Download PDFInfo
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- CN109515220A CN109515220A CN201811538190.7A CN201811538190A CN109515220A CN 109515220 A CN109515220 A CN 109515220A CN 201811538190 A CN201811538190 A CN 201811538190A CN 109515220 A CN109515220 A CN 109515220A
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- 238000000034 method Methods 0.000 title claims abstract description 23
- 230000005540 biological transmission Effects 0.000 claims abstract description 17
- 238000001914 filtration Methods 0.000 claims description 15
- 230000005611 electricity Effects 0.000 claims description 5
- 230000008878 coupling Effects 0.000 claims description 2
- 238000010168 coupling process Methods 0.000 claims description 2
- 238000005859 coupling reaction Methods 0.000 claims description 2
- 238000009434 installation Methods 0.000 claims description 2
- 238000010276 construction Methods 0.000 abstract description 2
- 238000000926 separation method Methods 0.000 abstract description 2
- 238000010586 diagram Methods 0.000 description 3
- 238000004088 simulation Methods 0.000 description 3
- 239000003990 capacitor Substances 0.000 description 2
- 150000001875 compounds Chemical class 0.000 description 2
- 230000007812 deficiency Effects 0.000 description 2
- 230000005672 electromagnetic field Effects 0.000 description 2
- 238000004146 energy storage Methods 0.000 description 2
- 238000005516 engineering process Methods 0.000 description 1
- 230000006872 improvement Effects 0.000 description 1
- 230000004048 modification Effects 0.000 description 1
- 238000012986 modification Methods 0.000 description 1
- 230000009467 reduction Effects 0.000 description 1
- 239000007787 solid Substances 0.000 description 1
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Classifications
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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
-
- 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 invention belongs to wireless charging technical fields, more particularly, to a kind of wireless charging device and wireless charging method applied to the double loads of electric car.Compared with the prior art, the invention has the advantages that: 1) wireless electric vehicle charging device can be realized wireless power transmission to double loads, saves the construction cost of charging pile；2) control method of wireless electric vehicle charging device can be realized the wireless power transmission to double loads, and charging load can charge simultaneously, save the charging time；3) control method of wireless electric vehicle charging device realizes the power distributed controll to each load, easy to operate, collection control performance is good in alternating current source by frequency separation method.
Description
Technical field
The invention belongs to wireless charging technical fields, more particularly, to a kind of wireless charging applied to the double loads of electric car
Electric installation and wireless charging method.
Background technique
The mode of electric car charging has contact charging and contactless two kinds of charging.Electric automobile charging pile is more at present
It is charged using contact.It charges compared to contact, contactless charging has reduction cable cost, reduces route internal resistance heat waste
The advantages that consuming, avoiding interface mechanical wear.In addition, wireless charging can be realized intelligent automatic control, operate more easy.Cause
This, electric car wireless charging has great significance to the development of electric car with universal.
Currently, wireless electric vehicle charging device is directed to one-to-one charging mostly, since electric car charging needs centainly
Time significantly increases the demand of electric automobile charging pile.For battery-super capacitor mixed energy storage system, the two
Charge requirement is different, if needing to complete the wireless of battery and super capacitor in order using common one-to-one charging method
Charging, it is inconvenient.
Therefore, to solve the above problems, it is desirable to provide a kind of new wireless charging device and wireless charging side
Method.
Summary of the invention
The first purpose of this invention is, for deficiency present in background technique, provides a kind of applied to electronic vapour
The wireless charging device of the double loads of vehicle.
For this purpose, above-mentioned purpose of the invention is achieved through the following technical solutions:
A kind of wireless charging device applied to the double loads of electric car, which is characterized in that described to be applied to electric car
The wireless charging device of double loads includes AC power source, loosely coupled transformer and rectification filtering unit；The loosely coupled transformer
Including transmitting terminal, the first receiving end and the second receiving end；The transmitting terminal is connected to AC power source, first receiving end and
Two receiving ends are respectively connected to the first rectification filtering unit and the second rectification filtering unit, first rectification filtering unit and
The output end of two rectification filtering units is respectively connected to the load of the first electric automobile rechargeable battery and the second electric car charging electricity
Pond load.
While by adopting the above technical scheme, the present invention can also be used or be combined using technology further below
Scheme:
Preferably, the AC power source exports the voltage source being combined by two component sine waves, and two just
The working frequency of string wave component is different.
Preferably, the intrinsic frequency of the first receiving end and the second receiving end of loosely coupled transformer respectively with alternating current
The working frequency of two component sine waves in source is identical, and the intrinsic frequency of the transmitting terminal of loosely coupled transformer is between AC power source
Between the working frequency of two component sine waves.
Second object of the present invention is, for deficiency present in background technique, provides a kind of applied to electronic vapour
The wireless charging method of the double loads of vehicle.
For this purpose, above-mentioned purpose of the invention is achieved through the following technical solutions:
A kind of wireless charging method applied to the double loads of electric car, it is described applied to the wireless of the double loads of electric car
Charging method is included: and is included: alternating current based on the previously described wireless charging device applied to the double loads of electric car
Source exports the voltage source being combined by two component sine waves, and the working frequency of two component sine waves is different, and
Working frequency is denoted as f respectively1And f2；The intrinsic frequency of first receiving end of loosely coupled transformer and the second receiving end respectively with friendship
The working frequency of two component sine waves in galvanic electricity source is identical, and the intrinsic frequency of the transmitting terminal of loosely coupled transformer is between alternating current
Between the working frequency of two component sine waves in source；According to the frequency selective characteristic of wireless charging, the f of AC power source1Component
Efficiency of transmission to the energy of the first receiving end is much higher than the second receiving end, the f of AC power source2Energy of the component to the second receiving end
The efficiency of transmission of amount is much higher than the first receiving end, passes through each frequency point in alternating current source unified configuration and regulation AC power source
The amplitude of amount can be realized and carry out wireless charging to two electric vehicle charging loads, and fill in the realization of alternating current source to two
The control of electrical load power distribution.
Wireless charging device realizes that the principle of double load charge controls is as follows:
Definition AC power source is UsSin (2 π ft), when two receiving ends are located at power supply two sides, between two receiving ends
Coupling can approximation ignore.The energy transmission efficiency ratio of two loads are as follows:
Wherein, ηL1And ηL2Respectively indicate the energy transmission efficiency of two charging loads, PL1And PL2Two charging loads respectively
Power, M1Indicate the mutual inductance of transmitting terminal and the first receiving end, M2Indicate the mutual inductance of transmitting terminal and the second receiving end, r1And r2Point
The internal resistance of the first receiving end and the second receiving end, r are not indicated1+Req1Indicate the first equivalent resistance for receiving end loop, r2+Req2Table
Show the equivalent resistance of the second reception end loop, f1And f2It respectively indicates the first reception end loop and second and receives the intrinsic of end loop
Frequency,WithIt respectively indicates the first reception end loop and second and receives the circuit Q of end loop
Factor, L1And L2Respectively indicate the self-induction of the first receiving end and the second receiving end.
The transmission characteristic and mutual inductance parameter of double load resonant formula radio energy transmission systems, quality factor of circuit and frequency are inclined
Condition of shifting one's love is related.Particularly, working frequency f1When, load 1 obtains a large amount of transimission power, when working frequency is f2When, big portion
Divide power that will be transferred to 2 sides of load.
According to the principle of stacking of circuit, the power that load-side receives can be regarded as by multi-frequency voltage source difference component
The sum of bearing power of transmission.For a compound electric potential source Us1sin(2πf1t)+Us2sin(2πf2T), power supply component Us1sin
(2πf1T) electric energy transmitted is mainly received by load 1, and Us2sin(2πf2T) energy transmitted is mainly received by load 2.Pass through
The amplitude of two frequency power source components is adjusted, unified regulation can be carried out to bearing power distribution in source side.
Compared with the prior art, the invention has the advantages that:
1) wireless electric vehicle charging device can be realized the wireless power transmission to double loads, save the construction of charging pile
Cost；
2) control method of wireless electric vehicle charging device can be realized the wireless power transmission to double loads, and charging is negative
Load can charge simultaneously, save the charging time；
3) control method of wireless electric vehicle charging device is realized in alternating current source by frequency separation method to each
The power distributed controll of load, easy to operate, collection control performance is good.
Detailed description of the invention
Fig. 1 is the schematic diagram of the wireless charging device provided by the present invention applied to the double loads of electric car.
Fig. 2 a-2b is the simulation result diagram of wireless charging method provided by the present invention.
Specific embodiment
The present invention is described in further detail referring to the drawings and specific embodiments.
Fig. 1 is the schematic diagram of the wireless charging device provided by the present invention applied to the double loads of electric car.Such as Fig. 1 institute
Show, wireless charging device includes AC power source, loosely coupled transformer and rectification filtering unit.
AC power source 1 connects the transmitting terminal 21 of loosely coupled transformer 2, and receiving end 1 receives transmitting terminal 21 by wireless transmission
Alternating electromagnetic field energy, DC current signal is obtained by rectification filtering unit 3, the DC current signal act on load electricity
Electrical automobile battery 1.Receiving end 2 receives alternating electromagnetic field energy of the transmitting terminal 21 by wireless transmission, passes through rectification filtering unit 5
DC current signal is obtained, which acts on load batteries of electric automobile 2.
AC power source is combined by the sinusoidal voltage source of different frequency (being denoted as f1 and f2 respectively).Receiving end 1 and reception
The intrinsic frequency at end 2 is identical as the frequency of AC power source component respectively, and the intrinsic frequency of transmitting terminal is between two AC power sources point
Between the frequency of amount.According to the frequency selective characteristic of wireless charging, the transmission of the energy of the f1 component of AC power source to receiving end 1
Efficiency is much higher than receiving end 2, and the efficiency of transmission of the energy of the f2 component of AC power source to receiving end 2 is much higher than receiving end 1, exchanges
The amplitude of each frequency component of power supply can be realized in the unified configuration of source side and regulation to two electric car charging loads
Wireless charging, and realize in power end to two charging load power distributed controlls.
The present invention also provides a kind of control methods of wireless electric vehicle charging device, and AC power source is by different frequency
The sinusoidal voltage source of (being denoted as f1 and f2) is combined.The intrinsic frequency of receiving end 1 and receiving end 2 respectively with AC power source component
Frequency it is identical, the intrinsic frequency of transmitting terminal is between the frequency of two AC power source components.For a compound electric potential source
Us1sin(2πf1t)+Us2sin(2πf2T), power supply component Us1sin(2πf1T) electric energy transmitted mainly (that is to say electricity by load 1
Electrical automobile battery 1) it receives, and Us2sin(2πf2T) energy transmitted is mainly connect by loading 2 (that is to say batteries of electric automobile 2)
It receives.By adjusting the amplitude of two frequency power source components, unified regulation can be carried out to bearing power distribution in source side.
The embodiment of the present invention has carried out simulating, verifying to the control method of wireless electric vehicle charging device.The embodiment
The simulator built is as described below:
AC power source is Us, and two sinusoidal voltage source component frequencies are respectively f1=3kHz and f2=5kHz, and transmitting terminal is solid
Having frequency is 4kHz, and 1 intrinsic frequency of receiving end is 3kHz, and 2 intrinsic frequency of receiving end is 5kHz.Rectification filtering unit is used and is not controlled
Rectification, LC filtering, load is using the pure resistor load of two 5 Ω come the power characteristic of the short charging interval of equivalent energy-storage battery.
In this embodiment, the control method of wireless electric vehicle charging device specifically: adjustment AC power source sine wave
The amplitude combinations of component measure the charging voltage and charging current variation of two loads.
Obtained simulation result is shown in that Fig. 2 a-2b, Fig. 2 a-2b are the simulation result of wireless charging method provided by the present invention
Figure, the various combination of power supply component will lead to the difference of load-side power distribution.AC power source is expressed as U in Fig. 2 as=24sin
(2πf1t)+24sin(2πf2t)；AC power source is expressed as U in Fig. 2 bs=24sin (2 π f1t)+12sin(2πf2t)；In Fig. 2 a
In, the reception frequency phase-difference very little of two loads, and the amplitude for reducing f2 power supply component can make load 1 obtain greater proportion
Transimission power, i.e., as shown in Figure 2 b.
Above-mentioned specific embodiment is used to illustrate the present invention, is merely a preferred embodiment of the present invention, rather than to this
Invention is limited, and within the spirit of the invention and the scope of protection of the claims, to any modification of the invention made, is equal
Replacement, improvement etc., both fall within protection scope of the present invention.
Claims (4)
1. a kind of wireless charging device applied to the double loads of electric car, which is characterized in that described to be applied to electric car pair
The wireless charging device of load includes AC power source, loosely coupled transformer and rectification filtering unit；The loosely coupled transformer packet
Include transmitting terminal, the first receiving end and the second receiving end；The transmitting terminal is connected to AC power source, first receiving end and second
Receiving end is respectively connected to the first rectification filtering unit and the second rectification filtering unit, first rectification filtering unit and second
The output end of rectification filtering unit is respectively connected to the load of the first electric automobile rechargeable battery and the second electric automobile rechargeable battery
Load.
2. the wireless charging device according to claim 1 applied to the double loads of electric car, which is characterized in that the friendship
Galvanic electricity source exports the voltage source that is combined by two component sine waves, and the mutual not phase of the working frequency of two component sine waves
Together.
3. the wireless charging device according to claim 2 applied to the double loads of electric car, which is characterized in that loose coupling
The intrinsic frequency work with two component sine waves of AC power source respectively of the first receiving end and the second receiving end of transformer
Frequency is identical, the working frequency of the intrinsic frequency of the transmitting terminal of loosely coupled transformer between two component sine waves of AC power source
Between.
4. a kind of wireless charging method applied to the double loads of electric car, which is characterized in that described to be applied to electric car pair
The wireless charging method of load is based on the wireless charging for being applied to the double loads of electric car described in any one of claim 1-3
Electric installation, and include: that AC power source exports the voltage source that is combined by two component sine waves, and two component sine waves
Working frequency is different, and working frequency is denoted as respectivelyf 1Withf 2；The first receiving end and the second receiving end of loosely coupled transformer
Intrinsic frequency it is identical as the working frequency of two component sine waves of AC power source respectively, the transmitting terminal of loosely coupled transformer
Intrinsic frequency is between the working frequency of two component sine waves of AC power source；It is selected according to the frequency of wireless charging special
Property, AC power sourcef 1Component to the first receiving end energy efficiency of transmission be much higher than the second receiving end, AC power sourcef 2Point
The efficiency of transmission to the energy of the second receiving end is measured much higher than the first receiving end, by the unified configuration of alternating current source and regulation
The amplitude of each frequency component of AC power source, which can be realized, carries out wireless charging to two electric vehicle charging loads, and is exchanging
Source side realizes the control being distributed to two charging load power.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201811538190.7A CN109515220A (en) | 2018-12-16 | 2018-12-16 | A kind of wireless charging device and wireless charging method applied to the double loads of electric car |
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201811538190.7A CN109515220A (en) | 2018-12-16 | 2018-12-16 | A kind of wireless charging device and wireless charging method applied to the double loads of electric car |
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| CN109515220A true CN109515220A (en) | 2019-03-26 |
Family
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| CN201811538190.7A Pending CN109515220A (en) | 2018-12-16 | 2018-12-16 | A kind of wireless charging device and wireless charging method applied to the double loads of electric car |
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Citations (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US20040130916A1 (en) * | 1999-06-21 | 2004-07-08 | Baarman David W. | Adaptive inductive power supply |
| CN103532251A (en) * | 2013-10-22 | 2014-01-22 | 南车株洲电力机车有限公司 | Electromagnetic induction charging system of energy-storage electromobile |
| CN204794286U (en) * | 2015-06-02 | 2015-11-18 | 介面光电股份有限公司 | Wireless charging device and system |
| US20170237340A1 (en) * | 2014-10-20 | 2017-08-17 | Momentum Dynamics Corporation | Method and apparatus for intrinsic power factor correction |
| CN108401471A (en) * | 2015-11-19 | 2018-08-14 | 苹果公司 | Induction type power transmitter |
| CN108667154A (en) * | 2018-05-21 | 2018-10-16 | 南昌大学 | A kind of multifrequency multi-load wireless charging platform with load isolation characteristic |
| CN209634299U (en) * | 2018-12-16 | 2019-11-15 | 中国电建集团华东勘测设计研究院有限公司 | A kind of wireless charging device applied to the double loads of electric car |
-
2018
- 2018-12-16 CN CN201811538190.7A patent/CN109515220A/en active Pending
Patent Citations (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US20040130916A1 (en) * | 1999-06-21 | 2004-07-08 | Baarman David W. | Adaptive inductive power supply |
| CN103532251A (en) * | 2013-10-22 | 2014-01-22 | 南车株洲电力机车有限公司 | Electromagnetic induction charging system of energy-storage electromobile |
| US20170237340A1 (en) * | 2014-10-20 | 2017-08-17 | Momentum Dynamics Corporation | Method and apparatus for intrinsic power factor correction |
| CN204794286U (en) * | 2015-06-02 | 2015-11-18 | 介面光电股份有限公司 | Wireless charging device and system |
| CN108401471A (en) * | 2015-11-19 | 2018-08-14 | 苹果公司 | Induction type power transmitter |
| CN108667154A (en) * | 2018-05-21 | 2018-10-16 | 南昌大学 | A kind of multifrequency multi-load wireless charging platform with load isolation characteristic |
| CN209634299U (en) * | 2018-12-16 | 2019-11-15 | 中国电建集团华东勘测设计研究院有限公司 | A kind of wireless charging device applied to the double loads of electric car |
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