CN204290454U - 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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- CN204290454U CN204290454U CN201420649970.XU CN201420649970U CN204290454U CN 204290454 U CN204290454 U CN 204290454U CN 201420649970 U CN201420649970 U CN 201420649970U CN 204290454 U CN204290454 U CN 204290454U
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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 electron capacitance circuit; 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 bridge diode rectification circuit, LC filter circuit, Vehicular accumulator cell and accumulator electric-quantity feedback wireless communication module.The utility model makes Vehicular accumulator cell or vehicle-mounted capacitor batteries can stablize, efficiently, rapidly charge; Have charging security high, be convenient to the plurality of advantages such as maintenance, there are good market prospects.
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
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.
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.
In order to extend the useful life of storage battery while ensureing accumulator of electric car quick charge, need to carry out the design of charging circuit according to the charging stage of storage battery.Electron capacitance circuit can dynamically change its equivalent capacitance value according to control program, and the level and smooth charging voltage changing storage battery two ends, realizes the step charge of storage battery.
Utility model content
The purpose of this utility model is one of deficiency at least 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, and 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 electron capacitance 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 two ends of electron capacitance circuit are respectively in parallel with the bottom crown of the first electric capacity and 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 bridge diode rectification circuit, LC filter circuit, Vehicular accumulator cell and accumulator electric-quantity feedback wireless communication module; The top crown of the top crown of the first electric capacity, the second bridge diode rectification circuit, the second electric capacity connects successively; The two ends of electron capacitance circuit are in parallel with the top crown of the first electric capacity and the top crown of the second electric capacity respectively; 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 bridge diode rectification circuit two ends, and accumulator electric-quantity feedback wireless communication module is connected on Vehicular accumulator cell.
Further, the generation circuit of high-frequency ac power comprises the first bridge diode rectification circuit, the 4th electric capacity, the controlled high-frequency inverter circuit of full-bridge, pwm control circuit and eight-path PWM drive circuit; Civil power after the first bridge diode rectification 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, four tunnels being linked into PWM drive circuit respectively export PWM1, PWM2, PWM3 and PWM4.
Further, pwm control circuit adopts TMS320F2812 chip and peripheral circuit to form, eight-path PWM drive circuit adopts discrete component to form, the PWM waveform serial connection eight-path PWM drive circuit that TMS320F2812 chip exports, output PWM1, PWM2, PWM3 and the PWM4 of this eight-path PWM drive circuit are connected the gate level of an IGBT to the 4th IGBT respectively; PWM5, PWM6, PWM7 and PWM8 are connected the gate pole of the 5th IGBT, the 6th IGBT, the 7th IGBT and the 8th IGBT respectively.
Further, 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, electron capacitance circuit comprises the 5th IGBT switching tube, the 6th IGBT switching tube, the 7th IGBT switching tube, the 8th IGBT switching tube, the 5th diode, the 6th diode, the 7th diode, the 8th diode and the 5th electric capacity, wherein four tunnels of eight-path PWM drive circuit export PWM5, PWM6, PWM7 and PWM8 accesses the 5th IGBT switching tube respectively, 6th IGBT switching tube, the gate pole of the 7th IGBT switching tube and the 8th IGBT switching tube, this four roads PWM output waveform is identical between two, 5th IGBT switching tube is identical with the PWM waveform that the gate pole of the 8th IGBT switching tube is accessed, 6th IGBT switching tube is identical with the PWM waveform that the gate pole of the 7th IGBT switching tube is accessed, the PWM waveform that the gate pole of the 5th IGBT and the 7th IGBT is accessed is complementary, the PWM waveform that the gate pole of the 6th IGBT and the 8th IGBT is accessed is complementary, the collector electrode of the 5th IGBT switching tube, the collector electrode of the 6th IGBT switching tube are connected with the anode of the 5th electric capacity, the emitter of the 5th IGBT switching tube and the collector electrode pole of the 7th IGBT switching tube connect, the emitter of the 7th IGBT switching tube, the emitter of the 8th IGBT switching tube are connected with the negative terminal of the 5th electric capacity, the collector electrode of the 8th IGBT switching tube is connected with the emitter of the 6th IGBT switching tube, 5th diode, the 6th diode, the 7th diode and the equal inverse parallel of the 8th diode are at the two ends of the 5th IGBT switching tube, the 6th IGBT switching tube, the 7th IGBT switching tube and the 8th IGBT switching tube, the two ends of single line as electron capacitance circuit are respectively drawn from the emitter of the 5th IGBT switching tube and the emitter of the 6th IGBT switching tube.
Further, 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, accumulator electric-quantity feedback wireless communication module is connected on Vehicular accumulator cell, receiver voltage signal also transmits it to the DSP control chip of underground, for the Real-time Feedback of vehicular electricity storage cell voltage, realize closed-loop control.
Further, two summing circuits that AD conversion module circuit is made up of operational amplifier, by voltage transitions between terminal AB to 0-3.3V, for the sampling of DSP control circuit.
Further, DSP control circuit, to after voltage carries out ratiometric conversion between the terminal AB after AD conversion module circuit conversion, produces the PWM waveform of eight tunnel different duty in conjunction with accumulator electric-quantity signal.
Compared with prior art, the utility model tool has the following advantages and technique effect:
The utility model leads to the principle of equal effects of high frequency principle and electron capacitance circuit based on electric capacity, in the circuit, utilize 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, realize the transmission of energy.Utilize power electronic device to produce a frequency changer circuit, utilize closed-loop control, the equivalent capacitance value of level and smooth adjustment electron capacitance, makes Vehicular accumulator cell or vehicle-mounted capacitor batteries can stablize, efficiently, rapidly charge; Have charging security high, be convenient to the plurality of advantages such as maintenance, there are good market prospects.
Accompanying drawing explanation
Fig. 1 is the schematic diagram of underground circuit (comprise high-frequency ac power and produce circuit and electron capacitance circuit).
Fig. 2 is the schematic diagram of vehicle electronic circuit (comprising full-bridge type diode rectifier circuit and LC filter circuit).
Fig. 3 is a kind of connection layout of wireless charging circuit of electric automobile.
Fig. 4 is a kind of emulation charge waveforms of wireless charging circuit of electric automobile.
Fig. 5 is the voltage at electron capacitance circuit two ends and the PWM triggering signal oscillogram (in figure, T represents a control cycle) of wherein IGBT.
Embodiment
Below in conjunction with accompanying drawing and example, embodiment of the present utility model is elaborated; but enforcement of the present utility model and protection are not limited thereto; if there is the not special content described in detail it is noted that following, be all that those skilled in the art can refer to existing techniques in realizing.
As Fig. 1, as an example, a kind of wireless charging circuit of 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 Us, the bottom crown N of the first electric capacity C1, the bottom crown Q of the second electric capacity C2 and electron capacitance 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 two ends of electron capacitance circuit are respectively in parallel with the bottom crown of the first electric capacity and 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, top crown P, the 3rd electric capacity C3 of the second electric capacity, the second bridge diode rectification circuit, LC filter circuit, Vehicular accumulator cell and accumulator electric-quantity feedback wireless communication module; The top crown of the top crown of the first electric capacity, the second bridge diode rectification circuit, the second electric capacity connects successively; The two ends of electron capacitance circuit are in parallel with the top crown of the first electric capacity and the top crown of the second electric capacity respectively; 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 bridge diode rectification circuit two ends, and accumulator electric-quantity feedback wireless communication module is connected on Vehicular accumulator cell.
The generation circuit of high-frequency ac power comprises the first bridge diode rectification circuit, the 4th electric capacity, the controlled high-frequency inverter circuit of full-bridge, pwm control circuit and eight-path PWM drive circuit; Civil power, after the first bridge diode rectification 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 IGBT VT1, the 2nd IGBT VT2, the 3rd IGBT VT3 and the 4th IGBT VT4, 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 eight-path PWM drive circuit respectively.
Electron capacitance circuit comprises the 5th IGBT switching tube VT5, the 6th IGBT switching tube VT6, the 7th IGBT switching tube VT7, the 8th IGBT switching tube VT8, the 5th diode VD5, the 6th diode VD6, the 7th diode VD7, the 8th diode VD8 and the 5th electric capacity C5, wherein four tunnels of eight-path PWM drive circuit export PWM5, PWM6, PWM7 and PWM8 accesses the 5th IGBT switching tube respectively, 6th IGBT switching tube, the gate pole of the 7th IGBT switching tube and the 8th IGBT switching tube, this four roads PWM output waveform is identical between two, 5th IGBT switching tube is identical with the PWM waveform that the gate pole of the 8th IGBT switching tube is accessed, 6th IGBT switching tube is identical with the PWM waveform that the gate pole of the 7th IGBT switching tube is accessed, the PWM waveform that the gate pole of the 5th IGBT and the 7th IGBT is accessed is complementary, the PWM waveform that the gate pole of the 6th IGBT and the 8th IGBT is accessed is complementary, the collector electrode of the 5th IGBT switching tube, the collector electrode of the 6th IGBT switching tube are connected with the anode of the 5th electric capacity, the emitter of the 5th IGBT switching tube and the collector electrode pole of the 7th IGBT switching tube connect, the emitter of the 7th IGBT switching tube, the emitter of the 8th IGBT switching tube are connected with the negative terminal of the 5th electric capacity, the collector electrode of the 8th IGBT switching tube is connected with the emitter of the 6th IGBT switching tube, 5th diode, the 6th diode, the 7th diode and the equal inverse parallel of the 8th diode are at the two ends of the 5th IGBT switching tube, the 6th IGBT switching tube, the 7th IGBT switching tube and the 8th IGBT switching tube, the two ends of single line as electron capacitance circuit are respectively drawn from the emitter of the 5th IGBT switching tube and the emitter of the 6th IGBT switching tube.
Pwm control circuit adopts dsp chip and peripheral circuit to form, eight-path PWM drive circuit adopts discrete component to form, the PWM waveform serial connection eight-path PWM drive circuit that dsp chip exports, output PWM1, PWM2, PWM3 and the PWM4 of this eight-path PWM drive circuit are 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.
Electron capacitance circuit is in parallel with the bottom crown of the first electric capacity and the bottom crown of the second electric capacity, its basic functional principle for: the 5th IGBT is identical with the PWM waveform that the gate pole of the 8th IGBT is accessed, 6th IGBT is identical with the PWM waveform that the gate pole of the 7th IGBT is accessed, the PWM waveform that the gate pole of the 5th IGBT and the 7th IGBT is accessed is complementary, and the PWM waveform that the gate pole of the 6th IGBT and the 8th IGBT is accessed is complementary; Suppose that there is triggering signal the gate pole of first the 6th IGBT and the 7th IGBT, the voltage at the second electric capacity two ends is the 0, five diode and the 6th IGBT, the 7th IGBT and the 8th diode current flow, and electron capacitance circuit runs on parallel bypass mode; After a phase shifting angle, triggering signal is accessed in the gate pole of the 5th IGBT and the 8th IGBT, the 5th diode and the 8th diode current flow, and electron capacitance circuit runs on charge mode; When the voltage at the second electric capacity two ends reaches maximum, current direction changes, the 5th IGBT and the 8th IGBT conducting, and electron capacitance circuit runs on discharge mode; When the second electric capacity both end voltage reverts to 0, the 6th diode and the 5th IGBT, the 8th IGBT and the 7th diode current flow, electron capacitance circuit runs on parallel bypass mode again; After identical phase shifting angle, electron capacitance circuit both end voltage direction changes, the course of work of the above-mentioned bypass-charging-electric discharge-bypass of electron capacitance circuit cycles, by adjusting the size of phase shifting angle, reaching and making electron capacitance circuit equivalent be variable capacitance and the object changing the input voltage of the second full-bridge type diode rectifier circuit.Equivalent capacitance value all becomes positive correlation with the second electric capacity and phase shifting angle;
Two summing circuits that AD conversion module circuit is made up of operational amplifier, by voltage transitions between terminal AB to 0-3.3V, for the sampling of DSP control circuit.DSP control circuit, to (can refer to existing techniques in realizing) after voltage carries out ratiometric conversion between the terminal AB after AD conversion module circuit conversion, produces PWM1, PWM2, PWM3 and PWM4 needed for the controlled high-frequency inverter circuit of full-bridge tetra-road PWM waveform; DSP control circuit also according to battery tension signal produce PWM5, PWM6, PWM7 and PWM8 tetra-tunnel duty ratio be 50% PWM waveform, by adjusting the triggering and conducting time changing phase shifting angle of the 5th to the 8th IGBT, thus change the voltage at electron capacitance circuit two ends.
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; 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 bridge diode rectification 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.Accumulator electric-quantity feedback wireless communication module is connected on 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; The voltage of accumulator electric-quantity feedback wireless communication module to the vehicle-mounted storage battery of electric automobile detects in real time, and voltage signal is passed to underground DSP control chip, according to voltage signal, control program in chip can judge which charging stage storage battery is in, when battery tension is less than about 90% of maximum, storage battery is in constant-current charging phase, terminal voltage needs level and smooth rising, and control program reduces the phase shifting angle of electron capacitance circuit.The scope of phase shifting angle is 0-40 °, and when phase shifting angle is 40 °, equivalent capacitive reactance is minimum; Along with the reduction of phase shifting angle, equivalent capacitive reactance increases, and makes accumulator voltage increase; When phase shifting angle is 0, equivalent capacitive reactance is equal with the capacitor value of the 5th electric capacity.When battery tension exceedes 90% of maximum, storage battery is in constant voltage charging phase, and storage battery both end voltage remains unchanged substantially.
Fig. 4 is the voltage and current waveform (dotted line is current waveform) charged under storage battery room temperature.Constant current charge is adopted to improve charging rate in the low electricity stage; Constant voltage charge extending battery life is adopted after reaching certain electricity; The equivalent capacitance value of electron capacitance circuit is adjusted to realize this charging process by closed-loop control.
Fig. 5 is the 5th and the 8th IGBT, the PWM triggering signal oscillogram of the 6th and the 7th IGBT and the voltage oscillogram at electron capacitance circuit two ends from top to bottom respectively.Two-way phase shift square wave complete complementary, controls half period respectively, and the voltage at electron capacitance circuit two ends maintains in a stable voltage range, constantly carries out discharge and recharge to the 5th electric capacity of inside.
Claims (6)
1. a wireless charging circuit for electric automobile, is characterized in that the vehicle electronic circuit and the underground circuit that comprise electric automobile; 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 electron capacitance 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 two ends of electron capacitance circuit are in parallel with the bottom crown of the first electric capacity and the bottom crown of the second electric capacity respectively; 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 bridge diode rectification circuit, LC filter circuit, Vehicular accumulator cell and accumulator electric-quantity feedback wireless communication module; The top crown of the top crown of the first electric capacity, the second bridge diode rectification circuit, the second electric capacity connects successively; 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 bridge diode rectification circuit two ends, and accumulator electric-quantity feedback wireless communication module is connected on Vehicular accumulator cell.
2. 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 bridge diode rectification 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 bridge diode rectification 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.
3. the wireless charging circuit of a kind of electric automobile according to claim 2, it is characterized in that, pwm control circuit adopts TMS320F2812 chip and peripheral circuit to form, eight-path PWM drive circuit adopts discrete component to form, the PWM waveform serial connection eight-path PWM drive circuit that TMS320F2812 chip exports, wherein four tunnels of this eight-path PWM drive circuit export PWM1, PWM2, PWM3 and are connected the gate level of an IGBT to the 4th IGBT respectively with PWM4.
4. 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.
5. 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, accumulator electric-quantity feedback wireless communication module is connected on Vehicular accumulator cell, receiver voltage signal also transmits it to the DSP control chip of underground, for the Real-time Feedback of vehicular electricity storage cell voltage, realizes closed-loop control.
6. the wireless charging circuit of a kind of electric automobile according to claim 1, it is characterized in that, electron capacitance circuit comprises the 5th IGBT switching tube (VT5), the 6th IGBT switching tube (VT6), the 7th IGBT switching tube (VT7), the 8th IGBT switching tube (VT8), the 5th diode (VD5), the 6th diode (VD6), the 7th diode (VD7), the 8th diode (VD8) and the 6th electric capacity (C6), wherein four tunnels of eight-path PWM drive circuit export PWM5, PWM6, PWM7 and PWM8 accesses the 5th IGBT switching tube respectively, 6th IGBT switching tube, the gate pole of the 7th IGBT switching tube and the 8th IGBT switching tube, this four roads PWM output waveform is identical between two, 5th IGBT switching tube is identical with the PWM waveform that the gate pole of the 8th IGBT switching tube is accessed, 6th IGBT switching tube is identical with the PWM waveform that the gate pole of the 7th IGBT switching tube is accessed, the PWM waveform that the gate pole of the 5th IGBT and the 7th IGBT is accessed is complementary, the PWM waveform that the gate pole of the 6th IGBT and the 8th IGBT is accessed is complementary, the collector electrode of the 5th IGBT switching tube, the collector electrode of the 6th IGBT switching tube are connected with the anode of the 6th electric capacity, the emitter of the 5th IGBT switching tube and the collector electrode pole of the 7th IGBT switching tube connect, the emitter of the 7th IGBT switching tube, the emitter of the 8th IGBT switching tube are connected with the negative terminal of the 6th electric capacity, the collector electrode of the 8th IGBT switching tube is connected with the emitter of the 6th IGBT switching tube, 5th diode, the 6th diode, the 7th diode and the equal inverse parallel of the 8th diode are at the two ends of the 5th IGBT switching tube, the 6th IGBT switching tube, the 7th IGBT switching tube and the 8th IGBT switching tube, the two ends of single line as electron capacitance circuit are respectively drawn from the emitter of the 5th IGBT switching tube and the emitter of the 6th IGBT switching tube.
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| Application Number | Priority Date | Filing Date | Title |
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| CN201420649970.XU CN204290454U (en) | 2014-10-31 | 2014-10-31 | A kind of wireless charging circuit of electric automobile |
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| CN201420649970.XU CN204290454U (en) | 2014-10-31 | 2014-10-31 | A kind of wireless charging circuit of electric automobile |
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Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104333102A (en) * | 2014-10-31 | 2015-02-04 | 华南理工大学 | Wireless charging circuit of electric automobile |
| CN104852446A (en) * | 2015-05-22 | 2015-08-19 | 三峡大学 | Wireless charger for charging power transmission line inspection robot |
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2014
- 2014-10-31 CN CN201420649970.XU patent/CN204290454U/en not_active Expired - Fee Related
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104333102A (en) * | 2014-10-31 | 2015-02-04 | 华南理工大学 | Wireless charging circuit of electric automobile |
| CN104852446A (en) * | 2015-05-22 | 2015-08-19 | 三峡大学 | Wireless charger for charging power transmission line inspection robot |
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| Date | Code | Title | Description |
|---|---|---|---|
| GR01 | Patent grant | ||
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20150422 |