CN204068356U - A kind of wireless charging circuit of electric automobile - Google Patents
A kind of wireless charging circuit of electric automobile Download PDFInfo
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- CN204068356U CN204068356U CN201420453870.XU CN201420453870U CN204068356U CN 204068356 U CN204068356 U CN 204068356U CN 201420453870 U CN201420453870 U CN 201420453870U CN 204068356 U CN204068356 U CN 204068356U
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- 210000004027 cell Anatomy 0.000 claims description 18
- 238000006243 chemical reaction Methods 0.000 claims description 11
- 230000008878 coupling Effects 0.000 claims description 11
- 238000010168 coupling process Methods 0.000 claims description 11
- 238000005859 coupling reaction Methods 0.000 claims description 11
- 230000005611 electricity Effects 0.000 claims description 3
- 210000000352 storage cell Anatomy 0.000 claims description 3
- 230000007704 transition Effects 0.000 claims description 3
- 238000000034 method Methods 0.000 description 5
- 239000003990 capacitor Substances 0.000 description 4
- 238000005457 optimization Methods 0.000 description 4
- 230000000694 effects Effects 0.000 description 3
- 238000010586 diagram Methods 0.000 description 2
- 230000033228 biological regulation Effects 0.000 description 1
- 230000005540 biological transmission Effects 0.000 description 1
- 230000009514 concussion Effects 0.000 description 1
- 230000007812 deficiency Effects 0.000 description 1
- 230000005684 electric field Effects 0.000 description 1
- 238000004146 energy storage Methods 0.000 description 1
- 238000005516 engineering process Methods 0.000 description 1
- 230000007613 environmental effect Effects 0.000 description 1
- 238000001914 filtration Methods 0.000 description 1
- 230000005764 inhibitory process Effects 0.000 description 1
- 238000012423 maintenance Methods 0.000 description 1
- 230000002093 peripheral effect Effects 0.000 description 1
- 230000008569 process Effects 0.000 description 1
- 230000004044 response Effects 0.000 description 1
- 238000005070 sampling Methods 0.000 description 1
- 238000004088 simulation Methods 0.000 description 1
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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
- Y02T90/12—Electric charging stations
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Abstract
The utility model discloses a kind of wireless charging circuit of electric automobile, comprise vehicle electronic circuit and the underground circuit of electric automobile; Wherein underground circuit comprises the generation circuit of high-frequency ac power, the bottom crown of the first electric capacity, the bottom crown of the second electric capacity and first side first resonant circuit; The bottom crown of the first electric capacity, the generation circuit of high-frequency ac power are connected successively with the bottom crown of the second electric capacity; The vehicle electronic circuit of electric automobile comprises the top crown of the first electric capacity, the top crown of the second electric capacity, the 3rd electric capacity, the second full-bridge type diode rectifier circuit, LC filter circuit, Vehicular accumulator cell and secondary side first resonant circuit; Secondary side first resonant circuit is connected in parallel on the logical high frequency characteristics that Vehicular accumulator cell two ends utilize electric capacity, utilizes the vehicle electronic circuit of electric automobile and underground circuit to form a charge circuit, charges to Vehicular accumulator cell.This utility model circuit and smart structural design, can replace the wireless charging device of part occasion, improves the efficiency of wireless charging to a certain extent.
Description
Technical field
The utility model relates to charging electric vehicle technical field, is specifically related to a kind of wireless charging circuit of electric automobile.
Background technology
It is power that electric automobile (EV) refers to vehicle power, drives wheels travel with motor, meets the vehicle of road traffic, safety regulations requirements.Due to less relative to orthodox car to environmental impact, its prospect is extensively had an optimistic view of, but current techniques is still immature, wherein one of urgent problem is the charging problems of electric automobile, and the charging pile of current electric automobile is also main to charge with wired forms, in order to make charging electric vehicle convenient, not only realize wireless charging, even by reasonably arranging, campaign-styled charging can be realized, namely not necessarily will stop during charging travelling.
Therefore, the utility model passes through capacitance structure and circuit design cleverly, makes electric automobile realize wireless charging.
So-called electric capacity, holds and discharges the element of electric charge exactly.Electric capacity is mainly used in following several important occasion.Power circuit: the effect of bypass, decoupling, filtering and energy storage; Signal processing circuit: the effect of coupling and concussion.
The size of the capacitive reactance of electric capacity in alternating current circuit and frequency is inversely proportional to, and namely frequency is less, and capacitive reactance is larger; Otherwise frequency is higher, electric capacity itself is also less to the inhibition of electric current.
Utility model content
The purpose of this utility model is the deficiency overcoming prior art existence, provides a kind of wireless charging circuit of electric automobile, charges to Vehicular accumulator cell or vehicle-mounted capacitor batteries.
The utility model is achieved through the following technical solutions.
A wireless charging circuit for electric automobile, it comprises: the vehicle electronic circuit of electric automobile and underground circuit; Wherein underground circuit comprises the generation circuit of high-frequency ac power, the bottom crown of the first electric capacity, the bottom crown of the second electric capacity and first side first resonant circuit; The bottom crown of the first electric capacity, the generation circuit of high-frequency ac power are connected successively with the bottom crown of the second electric capacity; The vehicle electronic circuit of electric automobile comprises the top crown of the first electric capacity, the top crown of the second electric capacity, the 3rd electric capacity, the second full-bridge type diode rectifier circuit, LC filter circuit, Vehicular accumulator cell and secondary side first resonant circuit; The top crown of the top crown of the first electric capacity, the second full-bridge type diode rectifier circuit, the second electric capacity connects successively; First side first resonant circuit and secondary side first resonant circuit are of coupled connections; 3rd electric capacity, LC filter circuit and Vehicular accumulator cell connect in turn, and the two ends of the 3rd electric capacity are connected in parallel on the second full-bridge type diode rectifier circuit two ends, and secondary side first resonant circuit is connected in parallel on Vehicular accumulator cell two ends.
Further optimization, one IGBT, the 2nd IGBT of the controlled high-frequency inverter circuit of full-bridge, the gate pole of the 3rd IGBT and the 4th IGBT, all be connected to a road PWM waveform, the waveform of this four road PWM is identical between two, one IGBT is identical with the PWM waveform that the 4th IGBT gate pole is accessed, and the 2nd IGBT is identical with the PWM waveform that the 3rd IGBT gate pole is accessed; The collector electrode of the one IGBT, the collector electrode of the 3rd IGBT are connected with the anode of the 4th electric capacity; The emitter of the one IGBT, the collector electrode of the 2nd IGBT connect; The collector electrode of the 3rd IGBT, the collector electrode of the 4th IGBT connect; The negative terminal of the emitter of the 2nd IGBT, the emitter of the 4th IGBT, the 4th electric capacity connects; From the collector electrode of the 2nd IGBT and the collector electrode of the 4th IGBT respectively draw single line as high-frequency ac power produce circuit two ends; The wherein bottom crown of termination first electric capacity, the bottom crown of another termination second electric capacity.
Further optimization, first side first resonant circuit comprises first side and the 5th electric capacity of the first coupling inductance be connected in parallel; Secondary side first resonant circuit comprises the secondary side of the first coupling inductance, and the voltage at the 5th electric capacity two ends is voltage between terminal CD.
Further optimization, the output of the second full-bridge type diode rectifier circuit, after LC filter circuit, is connected to the two ends of Vehicular accumulator cell, and secondary side first resonant circuit is attempted by Vehicular accumulator cell, for the Real-time Feedback of vehicular electricity storage cell voltage, realize closed-loop control.
Further optimization, the generation circuit of high-frequency ac power comprises the first full-bridge type diode rectifier circuit, the 4th electric capacity, the controlled high-frequency inverter circuit of full-bridge, pwm control circuit and four tunnel PWM drive circuit; Civil power after the first full-bridge type diode rectifier circuit, then obtains direct current through the two ends of the 4th electric capacity, and the voltage at the 4th electric capacity two ends is the voltage between terminal AB; This direct current, through the controlled high-frequency inverter circuit of full-bridge be made up of a four IGBT switching tubes i.e. IGBT, the 2nd IGBT, the 3rd IGBT and the 4th IGBT, obtains the AC power of high frequency; The gate level of the IGBT wherein in the controlled high-frequency inverter circuit of full-bridge, the 2nd IGBT, the 3rd IGBT and the 4th IGBT, is linked into the output of four tunnel PWM drive circuit respectively.
Preferred further, pwm control circuit can adopt existing circuit, adopt TMS320F2812 chip, four tunnel PWM drive circuit adopt discrete component to form, the PWM waveform that TMS320F2812 chip exports is connected in series four tunnel PWM drive circuit, and the output of this four tunnels PWM drive circuit connects the gate level of an IGBT to the 4th IGBT respectively.
Further preferred, described wireless charging circuit also comprises AD conversion module circuit, two summing circuits that AD conversion module circuit is made up of operational amplifier, by between terminal AB between voltage and terminal CD voltage transitions to 0 ~ 3.3V, sample for pwm control circuit.Pwm control circuit is to after between the terminal AB after AD conversion module circuit conversion, between voltage and terminal CD, voltage carries out ratiometric conversion, and the numerical value obtained produces the PWM waveform of four tunnel different duty.
Compared with prior art, the utility model tool has the following advantages and technique effect:
The utility model structure is ingenious, with electric capacity every straight-through friendship, logical high frequency and the characteristic hindering low frequency, dexterously the charging system of Vehicular accumulator cell is divided into two parts, by the electric field between two capacitor plates, realizes the transmission of energy.The utility model leads to high frequency principle based on electric capacity, utilizes power device to produce a frequency changer circuit, utilizes closed-loop control, and Vehicular accumulator cell or vehicle-mounted capacitor batteries can be charged by stability and high efficiency rapidly.Improve the fail safe of charging, be convenient to the plurality of advantages such as maintenance, there are good market prospects.
Accompanying drawing explanation
Fig. 1 is the schematic diagram that high-frequency ac power produces circuit.
Fig. 2 is the schematic diagram of full-bridge type diode rectifier circuit and LC filter circuit.
Fig. 3 is the system connection layout of wireless charging.
Fig. 4 is the emulation charge waveforms of the system of wireless charging.
Embodiment
Elaborate to embodiment of the present utility model below in conjunction with accompanying drawing and example, but enforcement of the present utility model and protection being not limited thereto, if there is the not special process described in detail below, is all that those skilled in the art can refer to existing techniques in realizing.
As Fig. 1, as an example, the generation circuit of high-frequency ac power comprises the first full-bridge type diode rectifier circuit, the 4th electric capacity, the controlled high-frequency inverter circuit of full-bridge, pwm control circuit and four tunnel PWM drive circuit; Civil power, after the first full-bridge type diode rectifier circuit, obtains direct current at the two ends of the 4th electric capacity C4, and the voltage at the 4th electric capacity two ends is the voltage between terminal AB; This voltage, through the controlled high-frequency inverter circuit of full-bridge be made up of four IGBT switching tubes the one IGBTVT1, the 2nd IGBTVT2, the 3rd IGBTVT3 and the 4th IGBTVT4, obtains the AC power Us of high frequency; The gate level of the IGBT wherein in the controlled high-frequency inverter circuit of full-bridge, the 2nd IGBT, the 3rd IGBT and the 4th IGBT, is linked into the output of four tunnel PWM drive circuit respectively.
Pwm control circuit can be available circuit (can not be key design of the present utility model, can refer to existing techniques in realizing), dsp chip and peripheral circuit is adopted to form, four tunnel PWM drive circuit adopt discrete component to form, the PWM waveform that dsp chip exports is connected in series four tunnel PWM drive circuit, and the output (PWM1, PWM2, PWM3 and PWM4) of this four tunnels PWM drive circuit is connected the gate level of an IGBT to the 4th IGBT respectively.
The collector electrode of the one IGBT of the controlled high-frequency inverter circuit of full-bridge, the collector electrode of the 3rd IGBT are connected with the anode of the 4th electric capacity; The emitter of the one IGBT, the collector electrode of the 2nd IGBT connect; The collector electrode of the 3rd IGBT, the collector electrode of the 4th IGBT connect; The negative terminal of the emitter of the 2nd IGBT, the emitter of the 4th IGBT, the 4th electric capacity connects; From the collector electrode of the 2nd IGBT and the collector electrode of the 4th IGBT respectively draw single line as high-frequency ac power produce circuit two ends; The wherein bottom crown N of termination first electric capacity, the bottom crown Q of another termination second electric capacity.
First side first resonant circuit is composed in parallel by the first side L1p of the first coupling inductance and the 5th electric capacity C5; The voltage at the 5th electric capacity two ends is voltage between terminal CD.Two summing circuits that AD conversion module circuit is made up of operational amplifier, by between terminal AB between voltage and terminal CD voltage transitions to 0-3.3V, for the sampling of DSP control circuit.DSP control circuit is to after between the terminal AB after AD conversion module circuit conversion, between voltage and terminal CD, voltage carries out ratiometric conversion, and the numerical value obtained produces the PWM waveform of four tunnel different duty.
As Fig. 2, as an example, the top crown M of the first electric capacity, the top crown P of the second electric capacity, a full-bridge type diode rectifier circuit VD1 to VD4 connects successively; First side first resonant circuit and secondary side first resonant circuit are of coupled connections; 3rd electric capacity C3, LC filter circuit and Vehicular accumulator cell connect in turn, and the two ends of the 3rd electric capacity are connected in parallel on the second full-bridge type diode rectifier circuit two ends.The output of the second full-bridge type diode rectifier circuit, after LC filter circuit, is connected to the two ends of Vehicular accumulator cell.Secondary side first resonant circuit is composed in parallel by the secondary side of the first coupling inductance and on-vehicle battery.Secondary side first resonant circuit is attempted by Vehicular accumulator cell, for the Real-time Feedback of vehicular electricity storage cell voltage, realizes closed-loop control.
Fig. 3 is the system connection layout of wireless charging.High-frequency ac power charges to charging electric vehicle circuit through the first electric capacity and the second electric capacity, the exquisite part of design is that the first electric capacity C1 and the second electric capacity C2 is seemingly in harmony but actually at variance, the top crown M of the first electric capacity and the top crown P of the second electric capacity belongs to the vehicle electronic circuit of electric automobile, and the bottom crown N of the first electric capacity and the bottom crown Q of the second electric capacity belongs to underground circuit; First side L1p, the 5th electric capacity C5 of the first coupling inductance and the voltage of secondary side L1s three to the vehicle-mounted storage battery of electric automobile of the first coupling inductance detect in real time, realize the design of the wireless charging of electric automobile thus.The first side of the first coupling inductance in Fig. 3 and the secondary side of the first coupling inductance are of coupled connections, and realize Vehicular accumulator cell Voltage Feedback.
Fig. 4 is the emulation charge waveforms of the system of wireless charging.The Vehicular accumulator cell of electric automobile or capacitor batteries are equivalent to the electric capacity of a 1000F, electric capacity is charged.Drawn by simulation waveform, the dynamic response of system charging is very fast, substantially can reach the charging requirement of storage battery, can charge to storage battery rapidly.
Claims (7)
1. a wireless charging circuit for electric automobile, is characterized in that comprising: the vehicle electronic circuit of electric automobile and underground circuit; Wherein underground circuit comprises the generation circuit of high-frequency ac power (Us), the bottom crown (N) of the first electric capacity (C1), the bottom crown (Q) of the second electric capacity (C2) and first side first resonant circuit; The bottom crown of the first electric capacity, the generation circuit of high-frequency ac power are connected successively with the bottom crown of the second electric capacity; The vehicle electronic circuit of electric automobile comprises the top crown (M) of the first electric capacity, the top crown (P) of the second electric capacity, the 3rd electric capacity (C3), the second full-bridge type diode rectifier circuit, LC filter circuit, Vehicular accumulator cell and secondary side first resonant circuit; The top crown of the top crown of the first electric capacity, the second full-bridge type diode rectifier circuit, the second electric capacity connects successively; First side first resonant circuit and secondary side first resonant circuit are of coupled connections; 3rd electric capacity, LC filter circuit and Vehicular accumulator cell connect in turn, and the two ends of the 3rd electric capacity are connected in parallel on the second full-bridge type diode rectifier circuit two ends, and secondary side first resonant circuit is connected in parallel on Vehicular accumulator cell two ends.
2. the wireless charging circuit of a kind of electric automobile according to claim 1, it is characterized in that, one IGBT, the 2nd IGBT of the controlled high-frequency inverter circuit of full-bridge, the gate pole of the 3rd IGBT and the 4th IGBT, all be connected to a road PWM waveform, the waveform of this four road PWM is identical between two, one IGBT is identical with the PWM waveform that the 4th IGBT gate pole is accessed, and the 2nd IGBT is identical with the PWM waveform that the 3rd IGBT gate pole is accessed; The collector electrode of the one IGBT, the collector electrode of the 3rd IGBT are connected with the anode of the 4th electric capacity; The emitter of the one IGBT, the collector electrode of the 2nd IGBT connect; The collector electrode of the 3rd IGBT, the collector electrode of the 4th IGBT connect; The negative terminal of the emitter of the 2nd IGBT, the emitter of the 4th IGBT, the 4th electric capacity connects; From the collector electrode of the 2nd IGBT and the collector electrode of the 4th IGBT respectively draw single line as high-frequency ac power produce circuit two ends; The wherein bottom crown of termination first electric capacity, the bottom crown of another termination second electric capacity.
3. the wireless charging circuit of a kind of electric automobile according to claim 1, is characterized in that, first side first resonant circuit comprises first side (L1p) and the 5th electric capacity (C5) of the first coupling inductance be connected in parallel; Secondary side first resonant circuit comprises the secondary side (L1s) of the first coupling inductance, and the voltage at the 5th electric capacity two ends is voltage between terminal CD.
4. the wireless charging circuit of a kind of electric automobile according to claim 1, it is characterized in that, the output of the second full-bridge type diode rectifier circuit is after LC filter circuit, be connected to the two ends of Vehicular accumulator cell, secondary side first resonant circuit is attempted by Vehicular accumulator cell, for the Real-time Feedback of vehicular electricity storage cell voltage, realize closed-loop control.
5. the wireless charging circuit of a kind of electric automobile according to claim 1, it is characterized in that, the generation circuit of high-frequency ac power comprises the first full-bridge type diode rectifier circuit, the 4th electric capacity (C4), the controlled high-frequency inverter circuit of full-bridge, pwm control circuit and four tunnel PWM drive circuit; Civil power after the first full-bridge type diode rectifier circuit, then obtains direct current through the two ends of the 4th electric capacity, and the voltage at the 4th electric capacity two ends is the voltage between terminal AB; This direct current, through the controlled high-frequency inverter circuit of full-bridge be made up of a four IGBT switching tubes i.e. IGBT, the 2nd IGBT, the 3rd IGBT and the 4th IGBT, obtains the AC power (Us) of high frequency; The gate level of the IGBT wherein in the controlled high-frequency inverter circuit of full-bridge, the 2nd IGBT, the 3rd IGBT and the 4th IGBT, is linked into the output of four tunnel PWM drive circuit respectively.
6. the wireless charging circuit of a kind of electric automobile according to claim 5, it is characterized in that, pwm control circuit adopts TMS320F2812 chip, four tunnel PWM drive circuit adopt discrete component to form, the PWM waveform that TMS320F2812 chip exports is connected in series four tunnel PWM drive circuit, and the output of this four tunnels PWM drive circuit connects the gate level of an IGBT to the 4th IGBT respectively.
7. the wireless charging circuit of a kind of electric automobile according to claim 6, it is characterized in that, also comprise AD conversion module circuit, two summing circuits that AD conversion module circuit is made up of operational amplifier, by between terminal AB between voltage and terminal CD voltage transitions to 0 ~ 3.3V, sample for pwm control circuit.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201420453870.XU CN204068356U (en) | 2014-08-12 | 2014-08-12 | A kind of wireless charging circuit of electric automobile |
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| Application Number | Priority Date | Filing Date | Title |
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| CN201420453870.XU CN204068356U (en) | 2014-08-12 | 2014-08-12 | A kind of wireless charging circuit of electric automobile |
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| CN204068356U true CN204068356U (en) | 2014-12-31 |
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| CN201420453870.XU Expired - Fee Related CN204068356U (en) | 2014-08-12 | 2014-08-12 | A kind of wireless charging circuit of electric automobile |
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Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104201730A (en) * | 2014-08-12 | 2014-12-10 | 华南理工大学 | Wireless charging circuit of electric vehicle |
| CN111114350A (en) * | 2020-02-17 | 2020-05-08 | 哈尔滨工业大学（威海） | Unmanned ship wireless charging system |
-
2014
- 2014-08-12 CN CN201420453870.XU patent/CN204068356U/en not_active Expired - Fee Related
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104201730A (en) * | 2014-08-12 | 2014-12-10 | 华南理工大学 | Wireless charging circuit of electric vehicle |
| CN111114350A (en) * | 2020-02-17 | 2020-05-08 | 哈尔滨工业大学（威海） | Unmanned ship wireless charging system |
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| 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: 20141231 |