CN207274460U - Electric automobile multichannel magnetic coupling type wireless charging system based on magnetic integrated-type LC wave filters - Google Patents
Electric automobile multichannel magnetic coupling type wireless charging system based on magnetic integrated-type LC wave filters Download PDFInfo
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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
- Y02T10/72—Electric energy management in electromobility
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Abstract
A kind of electric automobile multichannel magnetic coupling type wireless charging system based on magnetic integrated-type LC wave filters, including alternating current 220V AC voltage input terminal, it is rectifier bridge, inverter bridge, multichannel magnetic coupler successively from the voltage input end, three tunnels is exported after the multichannel magnetic coupler：Rectified bridge, LC wave filters are battery-powered to more than 320V, 48V and 24V tri- respectively, its feature is that the LC wave filters integrate mode filter for magnetic.The utility model uses integrated magnetic, and multiple inductance are integrated, and reduces volume and weight, improves power density, electric automobile is had the space of opposite bigger, improves the popularity rate of electric automobile.
Description
Technical field
Electric automobile is the utility model is related to, particularly a kind of electric automobile multichannel magnetic based on magnetic integrated-type LC wave filters
Manifold type wireless charging system.
Background technology
Electric automobile has the advantages that " zero-emission ", energy source are wide, is to alleviate China as a kind of new traffic tool
Petroleum resources are nervous, the important means of urban atmospheric pollution serious problems, are the effective carriers for promoting transport development mode transformation.
Electric automobile charging station is built, realizes that energy is changed between electric automobile and power grid, is the basis for promoting ev industry development.
Distance travelled is shorter every time after electric automobile charging, and most electric automobile cruising ability is 150 kilometers under normal circumstances
Left and right, thus need to build an extensive electrically-charging equipment network, provide conveniently electric energy supply for automobile user
Service.Charging system for electric automobile can run to electric automobile and provide energy, be the important foundation support of ev industry
System, and electric automobile realize the essential important step in commercialization, industrialization process.
Contain substantial amounts of electrical energy transformer in electric automobile, i.e., containing substantial amounts of magnetic device (abbreviation magnetic part), such as transformation
Device, inductance etc..It is to complete energy storage and the main devices of conversion, filtering and electrical isolation, is to influence converter volume, again
The principal element of amount.In order to reduce the volume of magnetic part, weight, power density is improved, it is proposed that integrated magnetic.So-called magnetic integrates
Technology is exactly that such as inductance, transformer, are wound on a magnetic core, from knot by two or more discrete magnetic parts in converter
Concentrate in together on structure, realized with a magnetic device, so as to reduce the number of devices in Switching Power Supply, reduce volume, carry
High power density, make the wiring between each magnetic part it is most short, loss reduce, output filter effect be improved.
At present, wireless charging technology mainly has magnet coupled resonant type, induction, radio waves type, field coupling formula
Four kinds of basic modes.Magnet coupled resonant type is that Massachusetts science and engineering is transmitted under a kind of charging technique of exploitation, Same Efficieney at present
It is distant, it is considered to be to be most hopeful to be widely used in the wireless charging mode of electric automobile.Magnet coupled resonant type is also referred to as
Near field resonant mode, is made of energy dispensing device and energy acceptance device, when two devices are adjusted to identical frequency, exists in other words
When resonating in one specific frequency, they can exchange mutual energy, the identical vibration frequency being arranged in magnetic field
Coil, can power from one to another.
In existing technology, multichannel magnet coupled resonant type wireless charging system in addition to output motor drive voltage level,
Other multiple voltage class can also be exported, such as control class device, on-board air conditioner, vehicle audio, the electricity of display screen electrical installation
Press grade.Multichannel magnet coupled resonant type wireless charging system is powered respectively according to different voltages grade in electric automobile, often
Road power supply can be isolated, and accomplish the strong and weak isolation of different voltages grade, reliability and security are good.
In existing technology, in multichannel magnet coupled resonant type wireless charging system, per there are LC wave filters all the way, filtered per road
Ripple device has inductance, and the output of three tunnels is not shared in utility model, that is, employ three path filters, cause volume big, weight is big, work(
Rate density is low.
Utility model content
The purpose of this utility model is to provide a kind of electric automobile multichannel magnetic coupling based on magnetic integrated-type LC wave filters
Formula wireless charging system, using integrated magnetic, integrates multiple inductance, reduces volume and weight, improves power density, makes electricity
Electrical automobile has the space of opposite bigger, improves the popularity rate of electric automobile.
The technical solution of the utility model is as follows：
A kind of electric automobile multichannel magnetic coupling type wireless charging system based on magnetic integrated-type LC wave filters, including alternating current
220V AC voltage input terminal, is rectifier bridge, inverter bridge, multichannel magnetic coupler successively from the voltage input end, through the multichannel magnetic
Three tunnels are exported after coupler：Rectified bridge, LC wave filters are battery-powered to more than 320V, 48V and 24V tri- respectively, it is special
Point is that the LC wave filters integrate mode filter for magnetic.
The magnetic integrates mode filter as decoupling type magnetic integrated-type LC wave filters, coefficient of coup adjustable type magnetic integrated-type LC
Wave filter or close coupling type magnetic integrated-type LC wave filters.
The decoupling type magnetic integrated-type LC wave filters share 4 magnetic poles, the first filter inductance (Lf1), the second filtered electrical
(Lf2) and the 3rd filter inductance (Lf3) are felt rotating around in the 1st magnetic pole, the 2nd magnetic pole and the 3rd magnetic pole, and the 4th magnetic pole is not around any
Winding；Air gap is provided with 1st magnetic pole, the 2nd magnetic pole and the 3rd magnetic pole, the air gap of each magnetic pole is the inductance value according to respective branch
Requirement and set, the expression formula of the first filter inductance (Lf1) is：
The expression formula of other two filter inductances is identical, and current ripples are then only determined by the voltage and inductance value of itself.
The coefficient of coup adjustable type magnetic integrated-type LC wave filters share 4 magnetic poles, the first filter inductance (Lf1),
Two filter inductances (Lf2) and the 3rd filter inductance (Lf3) are rotating around in the 1st magnetic pole, the 2nd magnetic pole and the 3rd magnetic pole, the 4th magnetic pole
Not around any winding；Air gap is all opened in 4 magnetic poles, then the magnetic resistance of four magnetic poles can adjust, and the magnetic flux of three windings is all
Passing through mutually, there is coupling between three windings, the air gap of 4 magnetic poles plays the role of adjustment, when there is coupling, the first filtering
The expression formula of inductance (Lf1) is：
The expression formula of other two filter inductances is identical, current ripples then except being decided by the voltage and inductance value of itself,
Also related to M13 to the mutual inductance M12 of other filter inductances, coupling direction is is mutually reinforcing, then current ripples reduce, this is
The distinctive function of integrated mode filter, and mutual inductance is adjustable, can be mainly adjusted according to the air gap of 4 columns, so as to reach corresponding
Electric property.
The close coupling type magnetic integrated-type LC wave filters share 3 magnetic poles, the first filter inductance (Lf1), the second filtering
Inductance (Lf2) and the 3rd filter inductance (Lf3) are rotating around in the 1st magnetic pole, the 2nd magnetic pole and the 3rd magnetic pole, the magnetic flux of three windings
All it is to pass through mutually, there is coupling between three windings, the expression formula of the first filter inductance (Lf1) is：
The expression formula of other two filter inductances is identical, this formula is identical with formula (2), but difference is due to not having
4 magnetic poles, cause magnetic flux not to be adjusted, i.e. mutual inductance M12 and M13 is fixed value.
The technique effect of the utility model is as follows：
(1) electric automobile multichannel magnetic coupling type wireless charging system of the utility model based on magnetic integrated-type LC wave filters,
It is to be based on the basis of magnetic coupling wireless charging, avoids the various problems of traditional wired charging, can realize traveling process
Middle charging, i.e. " wireless charging, stop to fill, filled when walking ", so as to solve the problems, such as that batteries of electric automobile cruising ability is weak；
(2) this programme meets the needs of different voltages grade by the charging of multichannel magnetic couplers coils, can realize multichannel
Isolation, increases security, improves efficiency；
(3) the utility model control source is line voltage 220V alternating currents, and rectified bridging is changed to direct current, direct current
High-frequency alternating current is transformed to by inverter bridge again, frequency carries out radio between 100K-300K, then by multichannel magnetic coupler
Can transmission, wherein main receiving coil, which is connected to after electric energy after rectification to direct current, gives master battery pack power supply, master battery pack mainly gives motor
Power supply, supply voltage is in more than 320V.In addition two-way mainly to electric automobile internal dc voltage grade power, be divided into 48V,
Two grades of 24V, 48V can be supplied to on-board air conditioner, and 24V can be supplied to control class device；
(4) the utility model magnetic integrated-type LC wave filters, by the filter inductance that voltage class is tri- tunnel of 320V, 48V, 24V
Integrated.Propose three kinds of integrated morphologies altogether, not only can less inductance weight and volume, moreover it is possible to reduce current ripples,
Lifting system performance.
Brief description of the drawings
Fig. 1 is existing electric automobile tradition multichannel magnetic coupling type wireless charging system schematic diagram；
Fig. 2 is electric automobile multichannel magnetic coupling type wireless charging system of the utility model based on magnetic integrated-type LC wave filters
Schematic diagram；
Fig. 3 is decoupling type magnetic integrated-type LC filter schematics；
Fig. 4 is the magnetic flux distribution schematic diagram of decoupling type magnetic integrated-type LC wave filters；
Fig. 5 is coefficient of coup adjustable type magnetic integrated-type LC filter schematics；
Fig. 6 is the magnetic flux distribution schematic diagram of coefficient of coup adjustable type magnetic integrated-type LC wave filters；
Fig. 7 is close coupling type magnetic integrated-type LC filter schematics；
Fig. 8 is the magnetic flux distribution schematic diagram of close coupling type magnetic integrated-type LC wave filters.
Embodiment
The utility model is described in further detail with reference to the accompanying drawings and examples, but should not limit the utility model with this
Protection domain.
First referring to Fig. 2, Fig. 2 is electric automobile multichannel magnetic coupling type of the utility model based on magnetic integrated-type LC wave filters
Wireless charging system schematic diagram, as seen from the figure, electric automobile multichannel magnetic coupling of the utility model based on magnetic integrated-type LC wave filters
Box-like wireless charging system, including alternating current 220V AC voltage input terminal, are rectifier bridge, inversion successively from the voltage input end
Bridge, multichannel magnetic coupler, three tunnels are exported after the multichannel magnetic coupler：Respectively rectified bridge, LC wave filters to more than 320V,
48V and 24V tri- are battery-powered, its feature is that the LC wave filters integrate mode filter for magnetic.
Control source is line voltage 220V alternating currents, and rectified bridging is changed to direct current, and direct current passes through inverter bridge again
High-frequency alternating current is transformed to, frequency carries out wireless power transmission between 100K-300K, then by multichannel magnetic coupler, wherein
Main receiving coil is connected to after electric energy and powers after rectification to direct current to 320V master battery packs, and master battery pack mainly gives motor power supply, supplies
Piezoelectric voltage is in more than 320V.In addition two-way is mainly powered to electric automobile internal dc voltage grade, is divided into 48V, 24V two
Grade.
The emphasis of the utility model is the design of integrated mode filter, proposes three kinds of integration wave filters respectively, respectively
Shown in Fig. 3 to be decoupling type magnetic integrated-type LC wave filters, coefficient of coup adjustable type magnetic integrated-type LC wave filters and close coupling type
Magnetic integrated-type LC wave filters.It is described separately below：
(1) decoupling type magnetic integrated-type LC wave filters
Decoupling type magnetic integrated-type LC wave filters are as shown in Figure 3.In figure, the decoupling type magnetic integrated-type LC wave filters share
4 magnetic poles, the first filter inductance Lf1, the second filter inductance Lf2 and the 3rd filter inductance Lf3 are rotating around in the 1st magnetic pole, the 2nd magnetic
On column and the 3rd magnetic pole, the 4th magnetic pole is not around any winding；Air gap, each magnetic pole are provided with 1st magnetic pole, the 2nd magnetic pole and the 3rd magnetic pole
Air gap be to be set according to the requirement of the inductance value of respective branch.
So the magnetic flux of three windings is circulated from 4 magnetic poles, do not coupled mutually between three magnetic poles, that is, decoupling type
Magnetic integrated-type LC wave filters, magnetic flux distribution are as shown in Figure 4.By taking the first filter inductance Lf1 as an example, its expression formula is
The expression formula of other two filter inductances is identical, and current ripples are then only determined by the voltage and inductance value of itself.
(2) coefficient of coup adjustable type magnetic integrated-type LC wave filters
Coefficient of coup adjustable type magnetic integrated-type LC wave filters are as shown in Figure 5.In figure, integrated filter shares 4 magnetic poles,
First filter inductance Lf1, the second filter inductance Lf2 and the 3rd filter inductance Lf3 are rotating around in the 1st magnetic pole, the 2nd magnetic pole and the 3rd
In magnetic pole, the 4th magnetic pole is not around any winding；Air gap is all opened in 4 magnetic poles, then the magnetic resistance of four magnetic poles can adjust, three
The magnetic flux of winding is all to pass through mutually, there is coupling, the magnetic of coefficient of coup adjustable type magnetic integrated-type LC wave filters between three windings
Reduction of fractions to a common denominator cloth is as shown in Figure 6.The air gap of 4 magnetic poles plays the role of adjustment, is then decoupling type once 4 magnetic poles do not have air gap.When having
During coupling, the expression formula by taking the first filter inductance Lf1 as an example is：
The expression formula of other two filter inductances is identical, current ripples then except being decided by the voltage and inductance value of itself,
Also related to M13 to the mutual inductance M12 of other filter inductances, coupling direction is is mutually reinforcing, then current ripples reduce, this is
The distinctive function of integrated mode filter.And mutual inductance is adjustable, it can be mainly adjusted according to the air gap of 4 columns, so as to reach corresponding
Electric property.
(3) close coupling type magnetic integrated-type LC wave filters
Close coupling type magnetic integrated-type LC wave filters are as shown in Figure 7.In figure, integrated filter shares 3 magnetic poles, the first filter
Ripple inductance Lf1, the second filter inductance Lf2 and the 3rd filter inductance Lf3 rotating around in the 1st magnetic pole, the 2nd magnetic pole and the 3rd magnetic pole,
The magnetic flux of three windings is all to pass through mutually, there is coupling, the magnetic flux of close coupling type magnetic integrated-type LC wave filters between three windings
Distribution is as shown in Figure 8.Expression formula by taking the first filter inductance Lf1 as an example is：
The expression formula of other two filter inductances is identical, this formula is identical with formula (2), but difference is due to not having
4th magnetic pole, causes magnetic flux not to be adjusted, i.e. mutual inductance M12And M13For fixed value.
The utility model for electric automobile multichannel magnet coupled resonant type wireless charging system integrated magnetic research compared with
It is few, and electric automobile space is limited, and whole system magnetic part is also more, it is necessary to using integrated magnetic to numerous magnetic
Part is integrated, so as to reduce volume and weight, improves power density, moreover it is possible to improve system filter performance.The utility model
Advantage is：
(1) electric automobile multichannel magnetic coupling type wireless charging system of the utility model based on magnetic integrated-type LC wave filters be most
Prominent advantage is can to charge in vehicle traveling process, i.e. " wireless charging, stop to fill, filled when walking ", and magnetic coupling is humorous
Transmit distant under formula of shaking Same Efficieney, be most to be hopeful to be widely used in a kind of mode of electric automobile wireless charging；
(2) multichannel magnet coupled resonant type wireless charging system, is supplied respectively according to different voltages grade in electric automobile
Electricity, per road, power supply can be isolated, and accomplish the strong and weak isolation of different voltages grade, reliability and security are good；
(3) the utility model focuses on magnetic integrated-type LC wave filters, mainly will be by voltage class 320V, 48V, 24V
The filter inductance on three tunnels is integrated.Propose three kinds of integrated morphologies altogether, not only can less inductance weight and volume, moreover it is possible to
Reduce current ripples, lifting system performance；
(4) the utility model extends to more than three tunnel of electric automobile the wireless charging system exported, and way gets over multisystem
Isolation performance is better, and magnetic device is also more, and the utility model can more improve power density.
Claims (5)
1. a kind of electric automobile multichannel magnetic coupling type wireless charging system based on magnetic integrated-type LC wave filters, including alternating current 220V
Ac voltage input, is rectifier bridge, inverter bridge, multichannel magnetic coupler successively from the voltage input end, through the multichannel magnetic coupling
Three tunnels are exported after device：Rectified bridge, LC wave filters are battery-powered to more than 320V, 48V and 24V tri- respectively, its feature exists
In the LC wave filters mode filter is integrated for magnetic.
2. the electric automobile multichannel magnetic coupling type wireless charging system according to claim 1 based on magnetic integrated-type LC wave filters
System, it is characterised in that the magnetic integrates mode filter as decoupling type magnetic integrated-type LC wave filters, coefficient of coup adjustable type magnetic collection
It is molded LC wave filters or close coupling type magnetic integrated-type LC wave filters.
3. the electric automobile multichannel magnetic coupling type wireless charging system according to claim 2 based on magnetic integrated-type LC wave filters
System, it is characterised in that the decoupling type magnetic integrated-type LC wave filters share 4 magnetic poles, the first filter inductance (Lf1), the second filter
Ripple inductance (Lf2) and the 3rd filter inductance (Lf3) rotating around in the 1st magnetic pole, the 2nd magnetic pole and the 3rd magnetic pole, the 4th magnetic pole not around
Any winding；Air gap is provided with 1st magnetic pole, the 2nd magnetic pole and the 3rd magnetic pole, the air gap of each magnetic pole is the electricity according to respective branch
The requirement of sensibility reciprocal and set, the expression formula of the first filter inductance (Lf1) is：
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4. the electric automobile multichannel magnetic coupling type wireless charging system according to claim 2 based on magnetic integrated-type LC wave filters
System, it is characterised in that the coefficient of coup adjustable type magnetic integrated-type LC wave filters share 4 magnetic poles, the first filter inductance
(Lf1), the second filter inductance (Lf2) and the 3rd filter inductance (Lf3) be rotating around in the 1st magnetic pole, the 2nd magnetic pole and the 3rd magnetic pole,
4th magnetic pole is not around any winding；Air gap is all opened in 4 magnetic poles, then the magnetic resistance of four magnetic poles can adjust, the magnetic of three windings
Logical is all to pass through mutually, there is coupling between three windings, and the air gap of 4 magnetic poles plays the role of adjustment, when there is coupling, the
The expression formula of one filter inductance (Lf1) is：
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The mutual inductance M of other filter inductances12And M13Correlation, coupling direction is is mutually reinforcing, then current ripples reduce, this is integrated
The distinctive function of mode filter, and mutual inductance is adjustable, can be mainly adjusted according to the air gap of 4 columns, so as to reach corresponding electricity
Gas performance.
5. the electric automobile multichannel magnetic coupling type wireless charging system according to claim 2 based on magnetic integrated-type LC wave filters
System, it is characterised in that the close coupling type magnetic integrated-type LC wave filters share 3 magnetic poles, the first filter inductance (Lf1), second
Filter inductance (Lf2) and the 3rd filter inductance (Lf3) rotating around in the 1st magnetic pole, the 2nd magnetic pole and the 3rd magnetic pole, three windings
Magnetic flux is all to pass through mutually, there is coupling between three windings, and the expression formula of the first filter inductance (Lf1) is：
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| CN111564983A (en) * | 2020-05-27 | 2020-08-21 | 华中科技大学 | Integrated electric automobile electric energy conversion device and control method thereof |
| CN111987809A (en) * | 2020-07-28 | 2020-11-24 | 东北林业大学 | Secondary control type LCC-S wireless charging system based on magnetic integration technology and orthogonal decoupling method |
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| CN114157126A (en) * | 2021-12-07 | 2022-03-08 | 青岛大学 | Magnetic integrated Trap-CL filter for current type grid-connected inverter |
| US11901113B2 (en) | 2019-01-07 | 2024-02-13 | Delta Electronics (Shanghai) Co., Ltd. | Inversely coupled inductor and power supply module |
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| US20200403499A1 (en) * | 2017-05-05 | 2020-12-24 | Delta Electronics (Shanghai) Co., Ltd | Power converter, inductor element and control method of phase shedding |
| US11909311B2 (en) * | 2017-05-05 | 2024-02-20 | Delta Electronics (Shanghai) Co., Ltd | Power converter, inductor element and control method of phase shedding |
| CN108648902A (en) * | 2018-05-21 | 2018-10-12 | 中广核核电运营有限公司 | Magnetic integrated device and power-switching circuit |
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