CN102255367A - Wireless charging system for electric vehicles - Google Patents
Wireless charging system for electric vehicles Download PDFInfo
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- CN102255367A CN102255367A CN2011102098640A CN201110209864A CN102255367A CN 102255367 A CN102255367 A CN 102255367A CN 2011102098640 A CN2011102098640 A CN 2011102098640A CN 201110209864 A CN201110209864 A CN 201110209864A CN 102255367 A CN102255367 A CN 102255367A
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Abstract
The invention relates to a wireless charging system for electric vehicles. The charging system comprises a power supply end connected with a power grid, and a power receiving end arranged on an electric vehicle and connected with a storage battery of the electric vehicle, wherein the power supply end comprises a rectifying unit, a high-frequency inverting unit and a transmitting coil which are sequentially connected in series, and the input end of the rectifying unit is connected with the power grid; and the receiving end comprises a receiving coil and a rectifying unit which are connected in series, and the output end of the rectifying unit is connected with the storage battery of the electric vehicle; and magnetic cores are respectively arranged in the transmitting coil and the receiving coil. The invention further discloses the electric vehicle with application of the wireless charging system. According to the invention, the wireless charging system is applied to the electric vehicle, and an electromagnetic coupling principle is utilized so that electric energy can be efficiently transmitted in a wireless manner, and thus, the problems of easiness for abrasion and poor safety of the traditional contact-type charging manner for the electric vehicles are solved.
Description
Technical field
The present invention relates to the vehicle technology field, relate in particular to a kind of electric vehicle wireless charging system.
Background technology
Electric motor car is owing to using electric energy as the energy, and is therefore pollution-free, meets the environmental protection demand of society, is rapidly developed at present.Common electric motor car by storage battery as its energy source, but existing storage battery when charging adopt the form of contact, easy to wear and poor stability.
Therefore, consider to adopt the mode of wireless charging to solve the defective that traditional contact is charged.The mode of existing wireless power can be divided into electromagnetic coupled, photoelectricity coupling and electromagentic resonance according to its principle.The photoelectricity coupling is that electric energy is converted into luminous energy, such as laser, transfers energy to the destination by light and is converted into electric energy again.This wireless power technology is more directly perceived, and photoelectric conversion technique also is widely used relatively.But the bang path of light has defective, is exactly in the bang path barrier to be arranged.So this technology also is that very big applied defect is arranged.The principle of the similar acoustic resonance of electromagentic resonance principle, two media has identical resonance frequency, just can be used for transmitting energy.But this technology at present still under study for action, and institute's energy energy delivered is very little, far can not satisfy the requirement of electric motor car charging.
Electromagnetic coupled is to utilize the alternating electromagnetic field of coupling to transmit energy, and wherein (Radio Frequency, RF) the wireless power technology has obtained more application at aspects such as radio-frequency (RF) identification, portable electric appts, Internet of Things to radio frequency at present.But the low problem of existing wireless radiofrequency power supply ubiquity efficiency of transmission.
Summary of the invention
Technical problem to be solved by this invention is to overcome the deficiencies in the prior art, and a kind of electric vehicle wireless charging system is provided, and can solve the problem of contact charging and wearing and tearing and poor stability, and energy transmission efficiency can satisfy the electric motor car demand.
The present invention is by the following technical solutions:
A kind of electric vehicle wireless charging system, comprise the feeder ear that is connected with electrical network, and be installed in the electric motor car and the receiving end that is connected with the storage battery of electric motor car, described feeder ear comprises rectification unit in sequential series, high-frequency inversion unit and transmitting coil, and wherein the input of rectification unit is connected with electrical network; Described receiving end comprises the receiving coil and the rectification unit of series connection, and wherein the output of rectification unit is connected with the storage battery of electric motor car; Magnetic core all is installed in transmitting coil and the receiving coil.
Preferably, described magnetic core is a high magnetoconductivity magnetic ferrite magnetic core.
Further, described transmitting coil is embedded in the face of land, and described receiving coil is installed on the electric motor car bottom.
A nearlyer step ground, described receiving coil is installed on the electric motor car bottom by a liftable device.
According to inventive concept of the present invention, also can obtain a kind of electric motor car, comprise storage battery, this electric motor car also comprises the charging device that is connected with described storage battery, described charging device is the receiving end in the described electric vehicle wireless charging system of above-mentioned arbitrary technical scheme.
Electric vehicle wireless charging system of the present invention utilizes the electromagnetic coupled principle, can carry out the wireless transmission of electric energy expeditiously, has solved the charge problem of existing easy to wear and poor stability of existing electric motor car contact.
Description of drawings
Fig. 1 is the structural representation of electric vehicle wireless charging system of the present invention;
Fig. 2 is the principle schematic of the present invention's one preferred version, and among the figure, 1 is transmitting coil, and 2 is receiving coil, and 3 is the liftable device, and 4 are electric motor car.
Embodiment
Below in conjunction with accompanying drawing technical scheme of the present invention is elaborated:
Electric vehicle wireless charging system of the present invention as shown in Figure 1, comprises feeder ear and receiving end.Feeder ear comprises rectification unit in sequential series, high-frequency inversion unit, transmitting coil, and the input of rectification unit is connected with electrical network; Receiving end comprises the receiving coil and the rectification unit of series connection, and rectification unit is connected with the storage battery of electric motor car; Magnetic core all is installed in transmitting coil and the receiving coil.
During charging, the power current in the electrical network carries out rectification through the rectification unit of feeder ear, is converted to direct current, is high-frequency alternating current through the high-frequency inversion cell translation then, is converted to electromagnetic wave through the transmitting coil that has magnetic core at last; Receiving terminal receives electromagnetic wave and is translated into high-frequency alternating current by the receiving coil with the transmitting coil electromagnetic coupled, and by rectification unit alternating current being converted into direct current then is charge in batteries.
Electromagnetic coupled degree between transmitting coil and the receiving coil has directly determined the energy transmission efficiency in the charging process, in order to improve energy transmission efficiency, can set about from two aspects.
On the one hand, can select suitable magnetic core so that the coupling coefficient of transmitting coil and receiving coil is bigger.Magnetic material can be divided into hard magnetic material and soft magnetic material, and wherein the soft magnetic material magnetic permeability is big, and coercive force is little, and magnetic hysteresis loss is low, and magnetic hysteresis loop becomes the elongate strip shape, and this material magnetizes easily, and also demagnetization easily is applicable to alternating magnetic field.And the soft magnetic ferrite in the soft magnetic material has higher resistance and littler power loss under high frequency.Therefore among the present invention, the magnetic core in transmitting coil and the receiving coil adopts high magnetoconductivity magnetic ferrite magnetic core.
On the other hand, because electromagnetic energy loss increases with distance, therefore should shorten the distance between transmitting coil and the receiving coil as far as possible.The present invention adopts scheme as shown in Figure 2, and transmitting coil 1 is embedded in the face of land, and receiving coil 2 is installed on electric motor car 4 bottoms by a liftable device 3.During charging, electric motor car 4 is placed on the transmitting coil 1, make transmitting coil 1 and receiving coil 2 over against, and the height of receiving coil 2 is descended by liftable device 3, make the distance of transmitting coil 1 and receiving coil 2 as far as possible little.
Claims (5)
1. electric vehicle wireless charging system, comprise the feeder ear that is connected with electrical network, and be installed in the electric motor car and the receiving end that is connected with the storage battery of electric motor car, it is characterized in that, described feeder ear comprises rectification unit in sequential series, high-frequency inversion unit and transmitting coil, and wherein the input of rectification unit is connected with electrical network; Described receiving end comprises the receiving coil and the rectification unit of series connection, and wherein the output of rectification unit is connected with the storage battery of electric motor car; Magnetic core all is installed in transmitting coil and the receiving coil.
2. electric vehicle wireless charging system according to claim 1 is characterized in that described magnetic core is a high magnetoconductivity magnetic ferrite magnetic core.
3. electric vehicle wireless charging system as claimed in claim 1 or 2 is characterized in that described transmitting coil is embedded in the face of land, and described receiving coil is installed on the electric motor car bottom.
4. as electric vehicle wireless charging system as described in the claim 3, it is characterized in that described receiving coil is installed on the electric motor car bottom by a liftable device.
5. an electric motor car comprises storage battery, it is characterized in that, this electric motor car also comprises the charging device that is connected with described storage battery, and described charging device is the receiving end in each described electric vehicle wireless charging system of claim 1-4.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2011102098640A CN102255367A (en) | 2011-07-26 | 2011-07-26 | Wireless charging system for electric vehicles |
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2011102098640A CN102255367A (en) | 2011-07-26 | 2011-07-26 | Wireless charging system for electric vehicles |
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| CN102255367A true CN102255367A (en) | 2011-11-23 |
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| CN2011102098640A Pending CN102255367A (en) | 2011-07-26 | 2011-07-26 | Wireless charging system for electric vehicles |
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Cited By (8)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103107576A (en) * | 2013-01-31 | 2013-05-15 | 浙江吉利汽车研究院有限公司杭州分公司 | Electric automobile wireless charging system |
| CN103427502A (en) * | 2013-08-23 | 2013-12-04 | 广西电网公司电力科学研究院 | Circuit and method for modulating envelope curves of IPT (inductive power transfer) system on basis of pulse width recognition |
| CN103944243A (en) * | 2014-02-27 | 2014-07-23 | 北京航空航天大学 | Inductive non-contact charging device with precise centering function for electric automobile |
| CN105603305A (en) * | 2014-11-17 | 2016-05-25 | Lg伊诺特有限公司 | Soft magnetic alloy, wireless power transmitting apparatus, and wireless power receiving apparatus including the same |
| CN105914825A (en) * | 2016-05-16 | 2016-08-31 | 四川仪岛科技有限公司 | Intelligent charging system |
| CN106828177A (en) * | 2017-03-31 | 2017-06-13 | 中国地质大学（武汉） | A kind of liftable wireless electric vehicle charging device |
| CN108075551A (en) * | 2017-12-25 | 2018-05-25 | 中山市小榄企业服务有限公司 | A kind of new-energy automobile charging system |
| CN109103997A (en) * | 2018-08-24 | 2018-12-28 | 长安大学 | A kind of wireless charging automotive system based on mutual inductance technology and wireless charging road |
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| US20080265684A1 (en) * | 2006-10-25 | 2008-10-30 | Laszlo Farkas | High power wireless resonant energy transfer system |
| CN101673962A (en) * | 2009-10-14 | 2010-03-17 | 奇瑞汽车股份有限公司 | Wireless charging system for electric automobile |
| CN202150726U (en) * | 2011-07-26 | 2012-02-22 | 宿迁市腾龙电动车制造厂 | Electric car wireless charging system |
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2011
- 2011-07-26 CN CN2011102098640A patent/CN102255367A/en active Pending
Patent Citations (3)
| Publication number | Priority date | Publication date | Assignee | Title |
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| US20080265684A1 (en) * | 2006-10-25 | 2008-10-30 | Laszlo Farkas | High power wireless resonant energy transfer system |
| CN101673962A (en) * | 2009-10-14 | 2010-03-17 | 奇瑞汽车股份有限公司 | Wireless charging system for electric automobile |
| CN202150726U (en) * | 2011-07-26 | 2012-02-22 | 宿迁市腾龙电动车制造厂 | Electric car wireless charging system |
Cited By (12)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103107576A (en) * | 2013-01-31 | 2013-05-15 | 浙江吉利汽车研究院有限公司杭州分公司 | Electric automobile wireless charging system |
| CN103107576B (en) * | 2013-01-31 | 2015-05-20 | 浙江吉利汽车研究院有限公司杭州分公司 | Electric automobile wireless charging system |
| CN103427502A (en) * | 2013-08-23 | 2013-12-04 | 广西电网公司电力科学研究院 | Circuit and method for modulating envelope curves of IPT (inductive power transfer) system on basis of pulse width recognition |
| CN103427502B (en) * | 2013-08-23 | 2015-08-26 | 广西电网公司电力科学研究院 | Based on IPT system envelope line modulation circuit and the method for pulsewidth identification |
| CN103944243A (en) * | 2014-02-27 | 2014-07-23 | 北京航空航天大学 | Inductive non-contact charging device with precise centering function for electric automobile |
| CN103944243B (en) * | 2014-02-27 | 2016-05-11 | 北京航空航天大学 | A kind of induction type non-contact charging device with accurate alignment function used for electric vehicle |
| CN105603305A (en) * | 2014-11-17 | 2016-05-25 | Lg伊诺特有限公司 | Soft magnetic alloy, wireless power transmitting apparatus, and wireless power receiving apparatus including the same |
| CN105603305B (en) * | 2014-11-17 | 2019-08-02 | Lg伊诺特有限公司 | Magnetically soft alloy, wireless power transmission apparatus and reception device comprising it |
| CN105914825A (en) * | 2016-05-16 | 2016-08-31 | 四川仪岛科技有限公司 | Intelligent charging system |
| CN106828177A (en) * | 2017-03-31 | 2017-06-13 | 中国地质大学（武汉） | A kind of liftable wireless electric vehicle charging device |
| CN108075551A (en) * | 2017-12-25 | 2018-05-25 | 中山市小榄企业服务有限公司 | A kind of new-energy automobile charging system |
| CN109103997A (en) * | 2018-08-24 | 2018-12-28 | 长安大学 | A kind of wireless charging automotive system based on mutual inductance technology and wireless charging road |
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Application publication date: 20111123 |