CN203674772U - Multi-load non-contact charging device and system for electric vehicle - Google Patents
Multi-load non-contact charging device and system for electric vehicle Download PDFInfo
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- CN203674772U CN203674772U CN201320649088.0U CN201320649088U CN203674772U CN 203674772 U CN203674772 U CN 203674772U CN 201320649088 U CN201320649088 U CN 201320649088U CN 203674772 U CN203674772 U CN 203674772U
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Abstract
The utility model relates to the technical field of vehicle electronics, and specifically relates to a multi-load non-contact charging device for an electric vehicle and a non-contact charging system including the charging device. The multi-load non-contact charging device comprises a full-wave rectifier circuit which is used for converting an alternating current into a direct current; a high-frequency inverter circuit connected with the full-wave rectifier circuit and used for inverting the direct current into a high-frequency alternating current; a resonance circuit connected with the high-frequency inverter circuit and composed of a first inductor and a first capacitor; a plurality of primary coils; and a compensation capacitor, wherein the plurality of coils and the compensation capacitor are connected at two end of the first capacitor in series, and wherein the capacitance Cp of the compensation capacitor is configured to meet a certain relation so as to keep a current flowing through the plurality of primary coils to be constant.
Description
Technical field
The utility model relates to automotive electronic technology, particularly a kind of for the multi-load contact-less charger of electric automobile and the non-contact power charging system that comprises this charger.
Background technology
Energy-conservation and environmental protection is the target of automobile industry development, and the development of the electric automobile such as pure electric automobile and hybrid vehicle is extensively had an optimistic view of under this background.Electric automobile generally obtains electric energy by socket from electrical network, and charger is directly fixedly connected with storage battery.Due to the existence of socket and cable, the flexibility deficiency of this charging modes.In addition, larger charging current has also formed the potential danger such as electric leakage.
For above-mentioned situation, industry has been developed the contactless charging method based on electromagnetic induction, and the method is carried out electric energy transmitting by the primary coil that is embedded in earth's surface with the electromagnetic coupled of the secondary coil that is fixed on vehicle chassis, to realize the charging to storage battery.Fig. 1 is the schematic diagram of typical contactless charging method.As shown in Figure 1, three phase worker power carries out high-frequency inversion through the direct current obtaining after rectifying and wave-filtering in inverter, the high-frequency alternating electric current producing injects primary coil, in proximity space, produce high-frequency alternating magnetic flux, secondary coil obtains induced electromotive force by coupling high-frequency alternating magnetic flux, after overpower adjustment link, exports load to.In said method, the power stage of primary side is mainly that the electric current of controlling primary coil by current closed-loop is realized, but this control method is very complicated, and is not suitable for multiple load system.
Utility model content
The purpose of this utility model is to provide a kind of multi-load contact-less charger for electric automobile, and it can realize the constant of the interior electric current of primary coil easily.
Above-mentioned purpose of the present utility model can realize by following technical proposal:
For a multi-load contact-less charger for electric automobile, comprising:
Full-wave rectifying circuit, for being converted to direct current by alternating current;
The high-frequency inverter circuit being connected with described full-wave rectifying circuit, for being changed to high-frequency alternating electric current by described DC inverter;
With the resonant circuit that described high-frequency inverter circuit is connected, it is made up of the first inductor and the first capacitor;
Multiple primary coils;
Compensation condenser,
Wherein, described multiple primary coil and compensation condenser are connected in series in the two ends of described the first capacitor.
Preferably, in above-mentioned multi-load contact-less charger, described multiple primary coils have identical inductance value and the identical mutual inductance value with secondary coil.
Preferably, in above-mentioned multi-load contact-less charger, described primary coil is flatwise coil.
Preferably, in above-mentioned multi-load contact-less charger, described flatwise coil is rectangular, and the bight of described rectangle is fillet, and the radius of described fillet and the length of described rectangle and width meet following relationship:
r＝λ×l/w
Wherein r is radius, and l is length, and w is width, and λ is constant, and span is 0.8-1.
Preferably, in above-mentioned multi-load contact-less charger, described flatwise coil is rounded or oval.
Of the present utility model also have an object to be to provide a kind of multi-load non-contact power charging system for electric automobile, and it can realize the constant of the interior electric current of primary coil easily.
Above-mentioned purpose of the present utility model can realize by following technical proposal:
For a multi-load non-contact power charging system for electric automobile, comprise:
Charger, comprising:
Full-wave rectifying circuit, for being converted to direct current by alternating current;
The high-frequency inverter circuit being connected with described full-wave rectifying circuit, for being changed to high-frequency alternating electric current by described DC inverter;
With the resonant circuit that described high-frequency inverter circuit is connected, it is made up of the first inductor and the first capacitor;
Multiple primary coils;
Compensation condenser,
Wherein, described multiple primary coils and compensation condenser are connected in series in the two ends of described the first capacitor,
Current collector, comprising:
Secondary coil;
The full bridge rectifier being connected with described secondary coil is direct current for the high-frequency alternating current conversion that described secondary coil is responded to;
The power control circuit being connected with described full bridge rectifier, for controlling the power output of described full bridge rectifier.
Accompanying drawing explanation
Above-mentioned and/or other side of the present utility model and advantage become the description of the various aspects by below in conjunction with accompanying drawing more clear and are easier to understand, and in accompanying drawing, same or analogous unit adopts identical label to represent, accompanying drawing comprises:
Fig. 1 is the schematic diagram of typical contactless charging method.
Fig. 2 is according to the circuit theory diagrams of the multi-load contact-less charger for electric automobile of an embodiment of the utility model.
Fig. 3 is the floor map of the primary coil in multi-load contact-less charger shown in Fig. 2.
Fig. 4 is according to the schematic diagram of the multi-load non-contact power charging system for electric automobile of an embodiment of the utility model.
Fig. 5 is the schematic diagram that can be applicable to the power control circuit of current collector shown in Fig. 4.
Embodiment
Below by being described with reference to the drawings, embodiment sets forth the utility model.But it will be appreciated that, these embodiments are only exemplary, there is no restriction for spirit of the present utility model and protection range.
In this manual, " coupling " word should be understood to be included in the situation that directly transmits energy or signal between two unit, or indirectly transmit the situation of energy or signal through one or more Unit the 3rd, and alleged signal includes but not limited to the signal existing with the form of electricity, light and magnetic here.
" comprise " and the term of " comprising " and so on represent except have in specification and claims, have directly and the unit and step of clearly statement, the technical solution of the utility model is not got rid of yet and is had other unit of directly or clearly not explained and the situation of step.Moreover the term such as " first ", " second ", " the 3rd " and " the 4th " does not represent that unit or numerical value are to be only used as to distinguish each unit or numerical value in the order of the aspects such as time, space, size.
By accompanying drawing, specific embodiment of the utility model is described below.
Fig. 2 is according to the circuit theory diagrams of the multi-load contact-less charger for electric automobile of an embodiment of the utility model.
As shown in Figure 2, comprise full-wave rectifying circuit 110, high-frequency inverter circuit 120, resonant circuit 130, primary coil group 140 and compensation condenser Cp according to the multi-load contact-less charger for electric automobile of the present embodiment.
Full-wave rectifying circuit 110 can adopt the form of rectifier bridge stack, and its alternating current just providing such as three-phase main-frequency AC power is converted to direct current.High-frequency inverter circuit 120 is connected with full-wave rectifying circuit 110, and its DC inverter that full-wave rectifying circuit 110 is exported is changed to high-frequency alternating electric current.
Wherein, L
1and C
1be respectively the inductance value of the first inductor and the capacitance of the first capacitor.
Referring to Fig. 2, primary coil group 140 is by multiple primary coil L that are connected in series
picomposition, each can charging to a load independently.In order to carry out inductance compensation, the charger 10 of the present embodiment is also introduced compensation condenser C
p, this compensation condenser and the primary coil L being connected in series
piafter being connected, be connected the first capacitor C
1two ends.
In the present embodiment, the shape of primary coil can be flatwise coil, and its shape for example can include but not limited to rectangle, circle or oval etc.In the time that primary coil is rectangle, the bight that can make as shown in Figure 3 rectangle is fillet so that the density of the magnetic line of force seamlessly transits at folding corner region.Preferably, the radius of fillet and the length of rectangle and width meet following relationship:
r＝λ×l/w （2）
Wherein r is radius, and l is length, and w is width, and λ is the definite constant of experiment, and span is 0.8-1.
Fig. 4 is according to the schematic diagram of the multi-load non-contact power charging system for electric automobile of an embodiment of the utility model.
As shown in Figure 4, comprise charger 10 and current collector 20 according to the multi-load non-contact power charging system 1 for electric automobile of the present embodiment, wherein, charger 10 adopts as above in conjunction with principle and the structure of embodiment described in Fig. 2 and 3, is not therefore described further.
Under a typical application scenarios, charger 10 is in a fixed position (for example, in charging station), and current collector 20 is installed on electric automobile.
In the present embodiment, current collector 20 comprises secondary coil 210, full bridge rectifier 220 and power control circuit 230.In the time that secondary coil 210 is close to one of them primary coil of primary coil group 140, between the two, there is Energy Transfer.
As shown in Figure 4, full-wave rectifying circuit 220 is connected with secondary coil 210, and its high-frequency alternating current conversion that secondary coil 210 is responded to is direct current.Power control circuit 230 is connected with full bridge rectifier 220, and it is for controlling the power output of full bridge rectifier 220.
Fig. 5 is the schematic diagram that can be applicable to the power control circuit of current collector shown in Fig. 4.Power control circuit 230 shown in Fig. 5 comprises inductor L
s, diode D, capacitor C
s, power switch pipe T
1with comparator A
1, wherein, inductor L
s, diode D, capacitor C
sbe connected between two outputs of full-wave rectifying circuit 220 power switch pipe T
1source electrode be connected to inductor L
swith the common contact of diode D, drain electrode is connected with one of them output of full-wave rectifying circuit 220, grid and comparator A
1output be connected.In the time of work, inductor L
smainly the output current of full-wave rectifying circuit 220 is carried out to flat ripple, the effect of diode D is the one-way transmission that realizes charge power, prevents power switch pipe T
1load short circuit when conducting.Capacitor C
sfor buffer condenser, as power switch pipe T
1when shutoff, the output current of full-wave rectifying circuit 220 is through inductor L
sflow into capacitor C with diode D
s, and as power switch pipe T
1when conducting, capacitor C
sto load discharge.On the other hand, power switch pipe T
1turn-on and turn-off adopt following manner realize: comparator A
1self-capacitance device C will sample
svoltage and the reference voltage at two ends compare, if the former is greater than the latter, export high level so that power switch pipe T
1conducting, otherwise make power switch pipe T
1turn-off.
Although represented and aspects more of the present utility model be discussed, but those skilled in the art are to be appreciated that and can change aspect above-mentioned under the condition that does not deviate from the utility model principle and spirit, therefore scope of the present utility model will be limited by claim and the content that is equal to.
Claims (10)
1. for a multi-load contact-less charger for electric automobile, it is characterized in that, comprising:
Full-wave rectifying circuit, for being converted to direct current by alternating current;
The high-frequency inverter circuit being connected with described full-wave rectifying circuit, for being changed to high-frequency alternating electric current by described DC inverter;
With the resonant circuit that described high-frequency inverter circuit is connected, it is made up of the first inductor and the first capacitor;
Multiple primary coils;
Compensation condenser,
Wherein, described multiple primary coil and compensation condenser are connected in series in the two ends of described the first capacitor.
2. multi-load contact-less charger according to claim 1, wherein, described multiple primary coils have identical inductance value and the identical mutual inductance value with secondary coil.
3. multi-load contact-less charger according to claim 1, wherein, described primary coil is flatwise coil.
4. multi-load contact-less charger according to claim 3, wherein, described flatwise coil is rectangular, and the bight of described rectangle is fillet, and the radius of described fillet and the length of described rectangle and width meet following relationship:
r＝λ×l/w
Wherein r is radius, and l is length, and w is width, and λ is constant, and span is 0.8-1.
5. multi-load contact-less charger according to claim 3, wherein, described flatwise coil is rounded or oval.
6. for a multi-load non-contact power charging system for electric automobile, comprise:
Charger, comprising:
Full-wave rectifying circuit, for being converted to direct current by alternating current;
The high-frequency inverter circuit being connected with described full-wave rectifying circuit, for being changed to high-frequency alternating electric current by described DC inverter;
With the resonant circuit that described high-frequency inverter circuit is connected, it is made up of the first inductor and the first capacitor;
Multiple primary coils;
Compensation condenser,
Wherein, described multiple primary coils and compensation condenser are connected in series in the two ends of described the first capacitor,
Current collector, comprising:
Secondary coil;
The full bridge rectifier being connected with described secondary coil is direct current for the high-frequency alternating current conversion that described secondary coil is responded to;
The power control circuit being connected with described full bridge rectifier, for controlling the power output of described full bridge rectifier.
7. multi-load non-contact power charging system according to claim 6, wherein, described multiple primary coils have identical inductance value and the identical mutual inductance value with secondary coil.
8. multi-load non-contact power charging system according to claim 6, wherein, described primary coil is flatwise coil.
9. multi-load non-contact power charging system according to claim 8, wherein, described flatwise coil is rectangular, and the bight of described rectangle is fillet, and the radius of described fillet and the length of described rectangle and width meet following relationship:
r＝λ×l/w
Wherein r is radius, and l is length, and w is width, and λ is constant, and span is 0.8-1.
10. multi-load non-contact power charging system according to claim 8, wherein, described flatwise coil is rounded or oval.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201320649088.0U CN203674772U (en) | 2013-10-21 | 2013-10-21 | Multi-load non-contact charging device and system for electric vehicle |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201320649088.0U CN203674772U (en) | 2013-10-21 | 2013-10-21 | Multi-load non-contact charging device and system for electric vehicle |
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| Publication Number | Publication Date |
|---|---|
| CN203674772U true CN203674772U (en) | 2014-06-25 |
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|---|---|---|---|
| CN201320649088.0U Expired - Fee Related CN203674772U (en) | 2013-10-21 | 2013-10-21 | Multi-load non-contact charging device and system for electric vehicle |
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Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN105811592A (en) * | 2014-12-30 | 2016-07-27 | 中国科学院沈阳自动化研究所 | Compensation topology circuit of inductive electric energy transmission system |
| CN106532980A (en) * | 2016-12-13 | 2017-03-22 | 西南交通大学 | Non-contact type dynamic power supply system coil for trains in rail transit |
| JP2018207774A (en) * | 2014-11-01 | 2018-12-27 | パナソニックＩｐマネジメント株式会社 | Power transmission device, vehicle mounted with power transmission device, and radio power transmission system |
-
2013
- 2013-10-21 CN CN201320649088.0U patent/CN203674772U/en not_active Expired - Fee Related
Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP2018207774A (en) * | 2014-11-01 | 2018-12-27 | パナソニックＩｐマネジメント株式会社 | Power transmission device, vehicle mounted with power transmission device, and radio power transmission system |
| CN105811592A (en) * | 2014-12-30 | 2016-07-27 | 中国科学院沈阳自动化研究所 | Compensation topology circuit of inductive electric energy transmission system |
| CN106532980A (en) * | 2016-12-13 | 2017-03-22 | 西南交通大学 | Non-contact type dynamic power supply system coil for trains in rail transit |
| CN106532980B (en) * | 2016-12-13 | 2018-11-20 | 西南交通大学 | A kind of contactless dynamic power system coil of rail transit train |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| CF01 | Termination of patent right due to non-payment of annual fee | ||
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20140625 Termination date: 20211021 |