CN203660621U - Main circuit topological structure applied to wireless charger of electric vehicle - Google Patents
Main circuit topological structure applied to wireless charger of electric vehicle Download PDFInfo
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- CN203660621U CN203660621U CN201320824439.7U CN201320824439U CN203660621U CN 203660621 U CN203660621 U CN 203660621U CN 201320824439 U CN201320824439 U CN 201320824439U CN 203660621 U CN203660621 U CN 203660621U
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Abstract
The utility model relates to the wireless charging technical field and discloses a main circuit topological structure applied to the wireless charger of an electric vehicle, which comprises a PFC circuit, a full-bridge inverter circuit, a full-bridge output circuit and a step-down circuit. The above circuits are sequentially connected together. The PFC circuit is used for correcting the input current of a rectifier to be synchronous sine waves to that of the voltage of the mains supply. The full-bridge inverter circuit is used for supplying an exciting current to a transformer. The full-bridge output circuit is used for outputting a rectified filtering current. The step-down circuit is used for charging a battery pack. The PFC circuit comprises a rectifier, a first inductor, a first power transistor, a first power diode and a first filter capacitor. The first inductor, the first power transistor, the first power diode and the first filter capacitor are sequentially connected with the rectifier. The full-bridge inverter circuit is in connection with the primary side of the transformer. The full-bridge output circuit is in connection with the secondary side of the transformer. The step-down circuit comprises a sixth power transistor, a sixth power diode, a second inductor and a third filter capacitor. The wireless charging system provided by the utility model is stable and reliable in operation.
Description
Technical field
The utility model relates to wireless charging field, particularly relates to a kind of main circuit topological structure being applied in wireless charger of electric automobile.
Background technology
Along with the development of electric automobile, high-tension battery bag charging technique has become the focus of paying close attention to, and electric automobile is carried out to wireless charging and can bring many benefits, in the use convenient, safety.But due to wireless charging be by magnetic core of transformer to fetching realization, in the time that second level circuit and tertiary circuit dock by magnetic core, cause former limit and the secondary no-voltage feedback of transformer, owing to lacking rear class Voltage Feedback, therefore single from full-bridge topology, be open cycle system, can cause circuit working unstable.
Utility model content
(1) technical problem that will solve
The technical problems to be solved in the utility model is how a kind of stable, reliable wireless charging system is provided.
(2) technical scheme
In order to solve the problems of the technologies described above, the utility model provides a kind of main circuit topological structure being applied in wireless charger of electric automobile, it comprise successively connect for the input current of rectifier being corrected into the reduction voltage circuit that the full bridge inverter of excitation is provided, charges for the full-bridge output circuit of output rectification filter with for power brick with the pfc circuit of the synchronous sine wave of line voltage, for transformer.
Wherein, described pfc circuit comprises rectifier and connected the first inductance successively, the first power transistor, the first power diode and the first filter capacitor, described the first inductance is connected on the electric current outlet line of rectifier, described the first power transistor is connected in parallel in the current circuit of rectifier, its drain electrode is connected with the electric current outlet line of rectifier, described the first power diode is connected on the electric current outlet line of rectifier, and its positive pole is connected with the drain electrode of the first power transistor, described the first filter capacitor is connected in parallel on the current circuit of described rectifier,
Described full bridge inverter is connected with the simple of transformer, it comprises the second power transistor, the 3rd power transistor, the 4th power transistor and the 5th power transistor, after described the second power transistor and the series connection of the 3rd power transistor, be connected in parallel on the current circuit of rectifier, after described the 4th power transistor and the series connection of the 5th power transistor, be connected in parallel on the current circuit of described rectifier;
Described full-bridge output circuit is connected with the secondary level of transformer, it comprises the second power diode, the 3rd power diode, the 4th power diode, the 5th power diode and the second filter capacitor, after described the second power diode and the series connection of the 3rd power diode, be connected in parallel in current circuit, after described the 4th power diode and the series connection of the 5th power diode, be connected in parallel in current circuit, described the second filter capacitor is connected in parallel in current circuit;
Described reduction voltage circuit comprises the 6th power transistor, the 6th power diode, the second inductance and the 3rd filter capacitor, described the 6th power transistor is connected in electric current outlet line, its drain electrode is connected with described the second filter capacitor, described the 6th power diode is connected in parallel in current circuit, its negative pole connects the source electrode of the 6th power transistor, described the second inductance is connected in electric current outlet line, and described the 3rd filter capacitor is connected in parallel in current circuit.
Wherein, described pfc circuit is provided with the first stabilizing circuit, it comprises the first error amplifier, a PWM modulator and the first base drive device, the reverse input end of described the first error amplifier connects the negative pole of described the first power diode, the positive input of described the first error amplifier connects reference voltage, the voltage output end of described the first error amplifier connects the first voltage input end of PWM modulator, the voltage output end of a described PWM modulator connects the first base drive device, and described the first base drive device connects the grid of the first power transistor.
Wherein, described reduction voltage circuit is provided with the second stabilizing circuit, it comprises the second error amplifier, the 2nd PWM modulator and the second base drive device, the reverse input end of described the second error amplifier connects the current output terminal of described the first inductance, the positive input of described the second error amplifier connects reference voltage, the voltage output end of described the second error amplifier connects the first voltage input end of the 2nd PWM modulator, the voltage output end of described the 2nd PWM modulator connects the second base drive device, described the second base drive device connects the grid of the 6th power transistor.
Wherein, described power transistor is preferably MOSFET pipe.
Wherein, described pfc circuit and full bridge inverter are located in the external charging equipment of described electric automobile, and described full-bridge output circuit and reduction voltage circuit are located in the reception electric energy equipment in car.
(3) beneficial effect
Compared with prior art, the utlity model has following advantage:
A kind of main circuit topological structure being applied in wireless charger of electric automobile that the utility model provides, it is provided with pfc circuit, full bridge inverter, full-bridge output circuit and reduction voltage circuit level Four topological structure, be embodied as electric automobile and carry out wireless charging, and the stabilizing circuit of pfc circuit and reduction voltage circuit and setting forms closed-loop control, to ensure the stability of system works.
Brief description of the drawings
Fig. 1 is that circuit of the present utility model connects block diagram;
Fig. 2 is the physical circuit catenation principle figure of Fig. 1;
Fig. 3 is the connecting circuit figure of the first stabilizing circuit of the present utility model;
Fig. 4 is the connecting circuit figure of the second stabilizing circuit of the present utility model.
Embodiment
Below in conjunction with drawings and Examples, embodiment of the present utility model is described in further detail.Following instance is used for illustrating the utility model, but is not used for limiting scope of the present utility model.
As shown in Figure 1, a kind of main circuit topological structure being applied in wireless charger of electric automobile providing for the utility model, it comprise connect successively pfc circuit, for transformer the full bridge inverter of excitation is provided, for the full-bridge output circuit of output rectification filter be the reduction voltage circuit of power brick charging, form level Four topological circuit.Described pfc circuit is for being corrected into the input current of rectifier and the synchronous sine wave of line voltage, harmonic carcellation and reactive current, to realize, the power factor (PF) of civil power is brought up to and is approximately 1, the input side of described pfc circuit is civil power 220V alternating voltage, after first order pfc circuit, convert direct voltage to, again through second level full-bridge circuit, by converting direct-current power into alternating-current power, be used for to static exciter, realize transformer primary by magnetic core to fetching, the magnetic circuit coupling of secondary level, tertiary circuit is full-bridge output circuit, for output rectification filter, the fourth stage output voltage obtaining after fourth stage reduction voltage circuit directly charges the battery, realize electric automobile wireless charging with this.
As shown in Figure 2, described pfc circuit comprises rectifier and connected the first inductance L 1 successively, the first power transistor Q1, the first power diode D1 and the first filter capacitor C1, described the first inductance L 1 is connected on the electric current outlet line of rectifier, described the first power transistor Q1 is connected in parallel in the current circuit of rectifier, its drain electrode is connected with the electric current outlet line of rectifier, its source electrode is connected with the electric current incoming line of rectifier, described the first power diode D1 is connected on the electric current outlet line of rectifier, and its positive pole is connected with the drain electrode of the first power transistor Q1, described the first filter capacitor C1 is connected in parallel on the current circuit of described rectifier, in order to the direct voltage of stable output.
Described full-bridge circuit is connected with the simple of transformer T1, it comprises the second power transistor Q2, the 3rd power transistor Q3, the 4th power transistor Q4 and the 5th power transistor Q5, after described the second power transistor Q2 and the 3rd power transistor Q3 series connection, be connected in parallel on the current circuit of rectifier, described the 4th power transistor Q4 is connected the drain electrode of transistor Q4 with the source electrode that is connected in parallel on the above transistor Q3 of current circuit of described rectifier after the 5th power transistor Q5 series connection, the source electrode of described transistor Q4 connects the drain electrode of transistor Q5, the simple transistor Q2 that is connected to of described transformer T1, between Q3 and transistor Q4, between Q5, described power transistor Q2, Q5 and Q3, Q4 alternate conduction are carried out the simple excitation to transformer T1, in the full bridge inverter of the second level, duty ratio when power tube work can be set is fixed value, do not change with the variation of load, being delivered to like this magnitude of voltage that the third level obtains after rectifying and wave-filtering can be within controlled range.
Described full-bridge output circuit is connected with the secondary level of transformer T1, it comprises the second power diode D2, the 3rd power diode D3, the 4th power diode D4, the 5th power diode D5 and the second filter capacitor C2, after described the second power diode D2 and the 3rd power diode D3 series connection, be connected in parallel in current circuit, after described the 4th power diode D4 and the 5th power diode D5 series connection, be connected in parallel in current circuit, described the second filter capacitor C2 is connected in parallel in current circuit; Converting the alternating voltage of secondary input to direct voltage by the full-bridge circuit of power diode D2, D3, D4 and D5 composition presses by obtaining galvanic current after capacitor C 2 filtering again.
Described reduction voltage circuit comprises the 6th power transistor Q6, the 6th power diode D6, the second inductance L 2 and the 3rd filter capacitor C3, described the 6th power transistor Q6 is connected in electric current outlet line, its drain electrode is connected with described the second filter capacitor C2, described the 6th power diode D6 is connected in parallel in current circuit, its negative pole connects the source electrode of the 6th power transistor Q6, described the second inductance L 2 is connected in electric current outlet line, and described the 3rd filter capacitor C3 is connected in parallel in current circuit.The voltage that the direct voltage of three grades of inputs obtains after step-down is processed directly charges to high-tension battery bag.
As shown in Figure 3, wherein, described pfc circuit is provided with the first stabilizing circuit, it comprises the first error amplifier, the one PWM modulator and the first base drive device, the reverse input end of described the first error amplifier connects the negative pole of described the first power diode, the positive input of described the first error amplifier connects reference voltage Vref, the first voltage input end of voltage Vea input the one PWM modulator of the voltage output end output of described the first error amplifier, the second voltage input of a described PWM modulator connects voltage V1, the voltage output end of a described PWM modulator connects the first base drive device, described the first base drive device connects the grid of the first power transistor.First order pfc circuit is closed-loop system, voltage in collection capacitor C 1 is amplified into PWM modulator through error amplifier and then carrys out driving power pipe Q1 through base drive device, now can ensure that by voltage feedback loop the output stage voltage of PFC is stationary value.Described PWM is the abbreviation of " Pulse Width Modulation ", is called for short pulse-width modulation.
As shown in Figure 4, described reduction voltage circuit is provided with the second stabilizing circuit, it comprises the second error amplifier, the 2nd PWM modulator and the second base drive device, the reverse input end of described the second error amplifier connects the current output terminal of described the first inductance, the positive input of described the second error amplifier connects reference voltage Vref, the voltage Vea input of the voltage output end output of described the second error amplifier connects the first voltage input end of the 2nd PWM modulator, the second voltage input of a described PWM modulator connects voltage V1, the voltage output end of described the 2nd PWM modulator connects the second base drive device, described the second base drive device connects the grid of the 6th power transistor.In the situation that input voltage is in controlled range, the voltage that can ensure to charge the battery is also stable.Be amplified into PWM modulator by the voltage in collection capacitor C 3 through error amplifier and then carry out driving power pipe Q6 through base drive device, can ensure that through voltage feedback loop reduction voltage circuit output voltage is a stationary value.
Wherein, described power transistor is preferably MOSFET pipe, for metal-oxide half field effect transistor (Metal-Oxide-Semiconductor Field-Effect Transistor, MOSFET) is a kind of field-effect transistor that can be widely used in analog circuit and digital circuit.
Wherein, described pfc circuit and full bridge inverter are located in external charging equipment, and described full-bridge output circuit and reduction voltage circuit are located in car and are received in electric energy equipment, reasonable in design, and charging is convenient.
The utility model adopts pfc circuit, full bridge inverter, full-bridge output circuit and reduction voltage circuit level Four topological structure, be embodied as electric automobile and carry out wireless charging, and stabilizing circuit is set in pfc circuit and reduction voltage circuit and forms closed-loop control, to ensure the stability of system works.
The foregoing is only preferred embodiment of the present utility model; not in order to limit the utility model; all within spirit of the present utility model and principle, any amendment of doing, be equal to replacement, improvement etc., within all should being included in protection range of the present utility model.
Claims (6)
1. the main circuit topological structure being applied in wireless charger of electric automobile, it is characterized in that, comprise successively connect for the input current of rectifier being corrected into the reduction voltage circuit that the full bridge inverter of excitation is provided, charges for the full-bridge output circuit of output rectification filter with for power brick with the pfc circuit of the synchronous sine wave of line voltage, for transformer.
2. the main circuit topological structure being applied in wireless charger of electric automobile as claimed in claim 1, it is characterized in that, described pfc circuit comprises rectifier and connected the first inductance successively, the first power transistor, the first power diode and the first filter capacitor, described the first inductance is connected on the electric current outlet line of rectifier, described the first power transistor is connected in parallel in the current circuit of rectifier, its drain electrode is connected with the electric current outlet line of rectifier, described the first power diode is connected on the electric current outlet line of rectifier, and its positive pole is connected with the drain electrode of the first power transistor, described the first filter capacitor is connected in parallel on the current circuit of described rectifier,
Described full bridge inverter is connected with the simple of transformer, it comprises the second power transistor, the 3rd power transistor, the 4th power transistor and the 5th power transistor, after described the second power transistor and the series connection of the 3rd power transistor, be connected in parallel on the current circuit of rectifier, after described the 4th power transistor and the series connection of the 5th power transistor, be connected in parallel on the current circuit of described rectifier;
Described full-bridge output circuit is connected with the secondary level of transformer, it comprises the second power diode, the 3rd power diode, the 4th power diode, the 5th power diode and the second filter capacitor, after described the second power diode and the series connection of the 3rd power diode, be connected in parallel in current circuit, after described the 4th power diode and the series connection of the 5th power diode, be connected in parallel in current circuit, described the second filter capacitor is connected in parallel in current circuit;
Described reduction voltage circuit comprises the 6th power transistor, the 6th power diode, the second inductance and the 3rd filter capacitor, described the 6th power transistor is connected in electric current outlet line, its drain electrode is connected with described the second filter capacitor, described the 6th power diode is connected in parallel in current circuit, its negative pole connects the source electrode of the 6th power transistor, described the second inductance is connected in electric current outlet line, and described the 3rd filter capacitor is connected in parallel in current circuit.
3. the main circuit topological structure being applied in wireless charger of electric automobile as claimed in claim 2, it is characterized in that, described pfc circuit is provided with the first stabilizing circuit, it comprises the first error amplifier, the one PWM modulator and the first base drive device, the reverse input end of described the first error amplifier connects the negative pole of described the first power diode, the positive input of described the first error amplifier connects reference voltage, the voltage output end of described the first error amplifier connects the first voltage input end of PWM modulator, the voltage output end of a described PWM modulator connects the first base drive device, described the first base drive device connects the grid of the first power transistor.
4. the main circuit topological structure being applied in wireless charger of electric automobile as claimed in claim 2, it is characterized in that, described reduction voltage circuit is provided with the second stabilizing circuit, it comprises the second error amplifier, the 2nd PWM modulator and the second base drive device, the reverse input end of described the second error amplifier connects the current output terminal of described the first inductance, the positive input of described the second error amplifier connects reference voltage, the voltage output end of described the second error amplifier connects the first voltage input end of the 2nd PWM modulator, the voltage output end of described the 2nd PWM modulator connects the second base drive device, described the second base drive device connects the grid of the 6th power transistor.
5. as described in claim 2-4 any one, be applied in the main circuit topological structure in wireless charger of electric automobile, it is characterized in that, described power transistor is MOSFET pipe.
6. as described in claim 5 any one, be applied in the main circuit topological structure in wireless charger of electric automobile, it is characterized in that, described pfc circuit and full bridge inverter are located in the external charging equipment of described electric automobile, and described full-bridge output circuit and reduction voltage circuit are located in the reception electric energy equipment in car.
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| CN201320824439.7U CN203660621U (en) | 2013-12-12 | 2013-12-12 | Main circuit topological structure applied to wireless charger of electric vehicle |
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| CN201320824439.7U CN203660621U (en) | 2013-12-12 | 2013-12-12 | Main circuit topological structure applied to wireless charger of electric vehicle |
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Cited By (9)
| Publication number | Priority date | Publication date | Assignee | Title |
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| CN103997250A (en) * | 2014-05-29 | 2014-08-20 | 甘肃西柴动力机电制造有限公司 | Digital control voltage stabilizing inverter |
| CN105281411A (en) * | 2014-07-26 | 2016-01-27 | 王东奎 | Electric vehicle charging device |
| CN105305842A (en) * | 2015-11-30 | 2016-02-03 | 河南工程学院 | Three-phase AC-DC non-contact power supply system with power factor correction function |
| CN105305516A (en) * | 2014-07-28 | 2016-02-03 | 王东奎 | A charging system and an electric automobile charged thereby in a docking manner |
| CN106160451A (en) * | 2016-08-01 | 2016-11-23 | 上海交通大学 | Three close-loop control power factor corrector and control method, supporting wireless charging circuit |
| WO2017050290A1 (en) * | 2015-09-25 | 2017-03-30 | The Hong Kong University Of Science And Technology | Wireless charging receiver |
| CN110138242A (en) * | 2019-05-23 | 2019-08-16 | 北京动力源科技股份有限公司 | A kind of series rectifier topological structure and a kind of LLC resonance circuit |
| CN110149069A (en) * | 2019-04-30 | 2019-08-20 | 国网江苏省电力有限公司电力科学研究院 | High efficiency high-frequency inverter circuit |
| CN113328533A (en) * | 2020-02-28 | 2021-08-31 | 北京新能源汽车股份有限公司 | Wireless charging bus capacitor discharge circuit |
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2013
- 2013-12-12 CN CN201320824439.7U patent/CN203660621U/en not_active Expired - Fee Related
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| CN103997250B (en) * | 2014-05-29 | 2017-08-01 | 甘肃居立门业有限责任公司 | A kind of digital control regulated inverter |
| CN103997250A (en) * | 2014-05-29 | 2014-08-20 | 甘肃西柴动力机电制造有限公司 | Digital control voltage stabilizing inverter |
| CN105281411A (en) * | 2014-07-26 | 2016-01-27 | 王东奎 | Electric vehicle charging device |
| CN105281411B (en) * | 2014-07-26 | 2020-07-03 | 王东奎 | Charging device for electric vehicle |
| CN105305516A (en) * | 2014-07-28 | 2016-02-03 | 王东奎 | A charging system and an electric automobile charged thereby in a docking manner |
| CN105305516B (en) * | 2014-07-28 | 2020-07-03 | 王东奎 | Charging system and butt-joint charging electric automobile thereof |
| WO2017050290A1 (en) * | 2015-09-25 | 2017-03-30 | The Hong Kong University Of Science And Technology | Wireless charging receiver |
| CN108141047A (en) * | 2015-09-25 | 2018-06-08 | 香港科技大学 | Wireless charging receiver |
| US11043847B2 (en) | 2015-09-25 | 2021-06-22 | The Hong Kong University Of Science And Technology | Wireless charging receiver |
| CN108141047B (en) * | 2015-09-25 | 2022-03-01 | 香港科技大学 | Wireless charging receiver |
| CN105305842A (en) * | 2015-11-30 | 2016-02-03 | 河南工程学院 | Three-phase AC-DC non-contact power supply system with power factor correction function |
| CN106160451A (en) * | 2016-08-01 | 2016-11-23 | 上海交通大学 | Three close-loop control power factor corrector and control method, supporting wireless charging circuit |
| CN110149069A (en) * | 2019-04-30 | 2019-08-20 | 国网江苏省电力有限公司电力科学研究院 | High efficiency high-frequency inverter circuit |
| CN110138242A (en) * | 2019-05-23 | 2019-08-16 | 北京动力源科技股份有限公司 | A kind of series rectifier topological structure and a kind of LLC resonance circuit |
| CN113328533A (en) * | 2020-02-28 | 2021-08-31 | 北京新能源汽车股份有限公司 | Wireless charging bus capacitor discharge circuit |
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| TR01 | Transfer of patent right |
Effective date of registration: 20180508 Address after: No. 188, Miyun District, Miyun District, Beijing, Beijing Patentee after: Beijing treasure Car Co.,Ltd. Address before: 102206, Beijing, Shahe Town, Changping District Road, sand Yang Patentee before: BEIQI FOTON MOTOR Co.,Ltd. |
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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: 20140618 Termination date: 20211212 |