CN111740484A - Wireless charging device of electric vehicle - Google Patents
Wireless charging device of electric vehicle Download PDFInfo
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- CN111740484A CN111740484A CN202010566254.5A CN202010566254A CN111740484A CN 111740484 A CN111740484 A CN 111740484A CN 202010566254 A CN202010566254 A CN 202010566254A CN 111740484 A CN111740484 A CN 111740484A
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- H—ELECTRICITY
- H02—GENERATION; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
- H02J—CIRCUIT ARRANGEMENTS OR SYSTEMS FOR SUPPLYING OR DISTRIBUTING ELECTRIC POWER; SYSTEMS FOR STORING ELECTRIC ENERGY
- H02J7/00—Circuit arrangements for charging or depolarising batteries or for supplying loads from batteries
- H02J7/02—Circuit arrangements for charging or depolarising batteries or for supplying loads from batteries for charging batteries from ac mains by converters
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B60—VEHICLES IN GENERAL
- B60L—PROPULSION OF ELECTRICALLY-PROPELLED VEHICLES; SUPPLYING ELECTRIC POWER FOR AUXILIARY EQUIPMENT OF ELECTRICALLY-PROPELLED VEHICLES; ELECTRODYNAMIC BRAKE SYSTEMS FOR VEHICLES IN GENERAL; MAGNETIC SUSPENSION OR LEVITATION FOR VEHICLES; MONITORING OPERATING VARIABLES OF ELECTRICALLY-PROPELLED VEHICLES; ELECTRIC SAFETY DEVICES FOR ELECTRICALLY-PROPELLED VEHICLES
- B60L53/00—Methods of charging batteries, specially adapted for electric vehicles; Charging stations or on-board charging equipment therefor; Exchange of energy storage elements in electric vehicles
- B60L53/10—Methods of charging batteries, specially adapted for electric vehicles; Charging stations or on-board charging equipment therefor; Exchange of energy storage elements in electric vehicles characterised by the energy transfer between the charging station and the vehicle
- B60L53/12—Inductive energy transfer
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- H—ELECTRICITY
- H02—GENERATION; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
- H02J—CIRCUIT ARRANGEMENTS OR SYSTEMS FOR SUPPLYING OR DISTRIBUTING ELECTRIC POWER; SYSTEMS FOR STORING ELECTRIC ENERGY
- H02J50/00—Circuit arrangements or systems for wireless supply or distribution of electric power
- H02J50/10—Circuit arrangements or systems for wireless supply or distribution of electric power using inductive coupling
- H02J50/12—Circuit arrangements or systems for wireless supply or distribution of electric power using inductive coupling of the resonant type
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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
- Y02T10/00—Road transport of goods or passengers
- Y02T10/60—Other road transportation technologies with climate change mitigation effect
- Y02T10/70—Energy storage systems for electromobility, e.g. batteries
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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
- Y02T10/00—Road transport of goods or passengers
- Y02T10/60—Other road transportation technologies with climate change mitigation effect
- Y02T10/7072—Electromobility specific charging systems or methods for batteries, ultracapacitors, supercapacitors or double-layer capacitors
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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
- Y02T10/00—Road transport of goods or passengers
- Y02T10/60—Other road transportation technologies with climate change mitigation effect
- Y02T10/72—Electric energy management in electromobility
-
- 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
- Y02T90/14—Plug-in electric vehicles
Abstract
The invention relates to a wireless charging device of an electric vehicle, comprising: the transmitting module is connected with the alternating current power supply, the receiving module is connected with a battery of the target electric car, the transmitting module sends electric energy from the alternating current power supply to the receiving module through the electromagnetic induction principle, and the receiving module stores the electric energy to the battery of the target electric car, so that the conversion of electric energy-magnetic energy-electric energy is realized, a cable is not needed, and wireless charging is really realized.
Description
Technical Field
The invention relates to the technical field of wireless charging, in particular to a wireless charging device for an electric vehicle.
Background
The electric vehicle occupies a great proportion in daily life, and the charging problem is increasingly highlighted along with the continuous increase of the number of the electric vehicles. At present, most of charging processes are connected with a storage battery after being connected with an exchanger through a power line, and are charged in series.
No matter the district charges, still special electric motor car fills the electric field, all is the charging of accomplishing through the mode of charging cable, but the long-term outdoor environment of charging cable causes the insulating layer ageing easily, makes electric core expose, has the electric shock and injures people's danger, and the potential safety hazard that the electric leakage arouses the conflagration simultaneously.
Disclosure of Invention
In view of the above, the present invention is directed to overcome the shortcomings of the prior art, and to provide a wireless charging device for an electric vehicle, so as to wirelessly charge the electric vehicle by using the electromagnetic induction principle.
In order to achieve the purpose, the invention adopts the following technical scheme:
an electric vehicle wireless charging device comprising: a transmitting module and a receiving module;
the transmitting module is connected with an alternating current power supply, and the receiving module is connected with a battery of the target electric car;
the transmitting module transmits the electric energy from the alternating current power supply to the receiving module through an electromagnetic induction principle, and the receiving module stores the electric energy to a battery of the target electric car.
Optionally, the transmitting module includes: the device comprises a first rectifying and filtering unit, an electric energy conversion unit and a transmitting unit;
the first rectifying and filtering unit is connected with an alternating current power supply and is also connected with the transmitting unit through the electric energy conversion unit;
the first rectification filter unit is used for rectifying alternating current of the alternating current power supply into unidirectional direct current and reducing alternating current ripple coefficient;
the electric energy conversion unit is used for converting the electric energy of the unidirectional direct current into magnetic energy;
the transmitting unit is used for transmitting the magnetic energy value and the receiving module.
Optionally, the first rectifying and filtering unit includes a first rectifying bridge and a first filtering capacitor;
the input end of the first rectifier bridge is connected with an alternating current power supply, the first output end of the first rectifier bridge is connected with the first end of the first filter capacitor, the second output end of the first rectifier bridge is connected with the second end of the first filter capacitor, and the first filter capacitor is connected to the two ends of the electric energy conversion unit in parallel;
the first rectifier bridge is used for rectifying alternating current into unidirectional direct current, and the first filter capacitor is used for reducing alternating current ripple coefficients.
Optionally, the electric energy conversion unit includes: the circuit comprises a microcontroller, a first resonant capacitor, a second resonant capacitor, a first high-frequency switching tube and a second high-frequency switching tube;
the grid electrode of the first high-frequency switching tube is connected with the microcontroller, the source electrode of the first high-frequency switching tube is connected with the first output end of the first rectifier bridge, and the drain electrode of the first high-frequency switching tube is connected with the source electrode of the second high-frequency switching tube;
the grid electrode of the second high-frequency switching tube is connected with the microcontroller, and the drain electrode of the second high-frequency switching tube is connected with the second output end of the first rectifier bridge;
the first resonance capacitor and the second resonance capacitor are connected in series and then connected in parallel to two ends of the first rectifier bridge.
Optionally, the transmitting unit is a transmitting coil;
one end of the transmitting coil is connected with the drain electrode of the first high-frequency switching tube, and the other end of the transmitting coil is connected with the first resonant capacitor.
Optionally, the receiving module includes: the receiving unit, the second rectifying and filtering unit and the switching converter;
the receiving unit is connected with the input end of the second rectifying and filtering unit, the output end of the second rectifying and filtering unit is connected with the input end of the switch converter, and the output end of the switch converter is connected with the battery of the target electric car;
the receiving unit is used for receiving the magnetic energy of the transmitting module and converting the magnetic energy into electric energy;
the second rectifying and filtering unit is used for rectifying the received electric energy into direct current and filtering clutter of the received electric energy;
the switching converter is used for outputting stable direct current to charge a battery of the target electric car.
Optionally, the switching converter includes: a transformer and a voltage control unit;
the input end of the transformer is connected with the voltage control unit and the output end of the second rectifying and filtering unit;
the output end of the transformer is connected with a battery of the target electric car;
the voltage control unit is used for controlling the voltage conversion of the transformer.
Optionally, the voltage control unit includes: the power supply control chip, the output feedback control chip, the isolation feedback control chip and the MOS tube are connected in series;
the power control chip is connected with the grid electrode of the MOS tube, the drain electrode of the MOS tube is connected with the primary coil of the transformer, and the source electrode of the MOS tube is grounded;
the power supply control chip is also connected with the output feedback control chip through the isolation feedback control chip, and the output feedback control chip is also connected with a secondary coil of the transformer.
Optionally, the receiving unit includes: a receiving coil and a third resonant capacitor;
the receiving coil and the third resonant capacitor are connected in parallel to the input end of the second rectifying and filtering unit.
Optionally, the second rectifying and filtering unit includes: a second rectifier bridge and a second filter capacitor;
the input end of the second rectifier bridge is connected with the receiving coil in parallel, the output end of the second rectifier bridge is connected with the third resonant capacitor in parallel, and the third resonant capacitor is further connected with the switch converter.
The invention discloses a wireless charging device of an electric vehicle, which comprises: a transmitting module and a receiving module; the transmitting module is connected with an alternating current power supply, and the receiving module is connected with a battery of the target electric car; the transmitting module transmits the electric energy from the alternating current power supply to the receiving module through an electromagnetic induction principle, and the receiving module stores the electric energy to a battery of the target electric car. Adopt the technical scheme of this application for transmission module turns into magnetic energy with the electric energy through electromagnetic induction's principle and sends to receiving module, and receiving module turns into the electric energy with magnetic energy again, and then charges for the electric motor car, and whole process need not the cable conductor, real realization wireless charging, has avoided because the emergence of the dangerous problem of series that the cable conductor trouble brought.
Drawings
In order to more clearly illustrate the embodiments of the present invention or the technical solutions in the prior art, the drawings used in the description of the embodiments or the prior art will be briefly described below, it is obvious that the drawings in the following description are only some embodiments of the present invention, and for those skilled in the art, other drawings can be obtained according to the drawings without creative efforts.
Fig. 1 is a schematic circuit diagram of a wireless charging device for an electric vehicle according to an embodiment of the present invention;
fig. 2 is a circuit schematic diagram of the receiving module in fig. 1.
Detailed Description
In order to make the objects, technical solutions and advantages of the present invention more apparent, the technical solutions of the present invention will be described in detail below. It is to be understood that the described embodiments are merely exemplary of the invention, and not restrictive of the full scope of the invention. All other embodiments, which can be derived by a person skilled in the art from the examples given herein without any inventive step, are within the scope of the present invention.
Fig. 1 is a schematic circuit diagram of a wireless charging device for an electric vehicle according to an embodiment of the present invention, and fig. 2 is a schematic circuit diagram of a receiving module in fig. 1.
As shown in fig. 1 and fig. 2, the wireless charging device for an electric vehicle of the present embodiment includes: the device comprises a transmitting module 1 and a receiving module 2, wherein the transmitting module 1 is connected with an alternating current power supply A, the receiving module 2 is connected with a battery B of a target electric car, the transmitting module 1 is wirelessly connected with the receiving module 2 through a coil, the transmitting module 1 sends electric energy from the alternating current power supply A to the receiving module 2 through the electromagnetic induction principle, and the receiving module 2 stores the electric energy to the battery B of the target electric car.
Specifically, the transmitting module 1 may include: the device comprises a first rectifying and filtering unit 11, an electric energy conversion unit 12 and a transmitting unit 13, wherein the first rectifying and filtering unit 11 is connected with an alternating current power supply A, and the first rectifying and filtering unit 11 is also connected with the transmitting unit 13 through the electric energy conversion unit 12; the first rectifying and filtering unit 11 is used for rectifying the alternating current of the alternating current power supply A into a unidirectional direct current and reducing an alternating current ripple coefficient; the electric energy conversion unit 12 is used for converting electric energy of the unidirectional direct current into magnetic energy, and the transmitting unit 13 is used for transmitting the magnetic energy value receiving module 2. And the first rectifying and filtering unit 11 may include a first rectifying bridge 111 and a first filtering capacitor 112; the input end of the first rectifier bridge 111 is connected with the alternating current power supply a, the first output end of the first rectifier bridge 111 is connected with the first end of the first filter capacitor 112, the second output end of the first rectifier bridge 111 is connected with the second end of the first filter capacitor 112, and the first filter capacitor 112 is connected in parallel with two ends of the electric energy conversion unit 12; the first rectifying bridge 111 is used for rectifying the alternating current into unidirectional direct current, and the first filter capacitor 112 is used for reducing the alternating current ripple factor. The power conversion unit 12 may then include: a microcontroller 121, a first resonant capacitor 122, a second resonant capacitor 123, a first high-frequency switch tube 124 and a second high-frequency switch tube 125; the grid electrode of the first high-frequency switching tube 124 is connected with the microcontroller 121, the source electrode of the first high-frequency switching tube 124 is connected with the first output end of the first rectifier bridge 111, and the drain electrode of the first high-frequency switching tube 124 is connected with the source electrode of the second high-frequency switching tube 125; the grid electrode of the second high-frequency switching tube 125 is connected with the microcontroller 121, and the drain electrode of the second high-frequency switching tube 125 is connected with the second output end of the first rectifier bridge 111; the first resonant capacitor 122 and the second resonant capacitor 123 are connected in series and then connected in parallel to two ends of the first rectifier bridge 111. In general, the transmitting unit 13 may be a transmitting coil; one end of the transmitting coil is connected to the drain of the first high-frequency switching tube 124, and the other end of the transmitting coil is connected to the first resonant capacitor 122. For example, the model of the microcontroller 121 is PIC24HJ32GP304-S/WRLQFP48, and the frequency of the magnetic field exchange can be changed by adjusting the set parameters of the MCU microcontroller 121 to control the charging current and the charging time. The first rectifier bridge 111 mainly rectifies the mains supply into a unidirectional direct current, the first filter capacitor 112 reduces the alternating current ripple coefficient, the first resonance capacitor 122 and the second resonance capacitor 123 enable the circuit to work in a resonance state, the first high-frequency switch tube 124 and the second high-frequency switch tube 125 are alternately switched to enable the transmitting coil and the first filter capacitor 112 to work in the resonance state to generate an alternating magnetic field, and then the transmitting coil transmits the obtained alternating magnetic field.
The receiving module 2 may then include: a receiving unit 21, a second rectifying and filtering unit 22 and a switching converter 23; the receiving unit 21 is connected with the input end of the second rectifying and filtering unit 22, the output end of the second rectifying and filtering unit 22 is connected with the input end of the switch converter 23, and the output end of the switch converter 23 is connected with the battery B of the target electric car; the receiving unit 21 is used for receiving the magnetic energy of the transmitting module 1 and converting the magnetic energy into electric energy; the second rectifying and filtering unit 22 is configured to rectify the received electric energy into direct current and filter noise waves of the received electric energy; the switching converter 23 is used to output a stable direct current to charge the battery B of the target electric vehicle. Wherein, the switching converter 23 includes: a transformer 231 and a voltage control unit; the input end of the transformer 231 is connected with the voltage control unit and the output end of the second rectifying and filtering unit 22, and the output end of the transformer 231 is connected with the battery B of the target electric vehicle; the voltage control unit is used for controlling the voltage conversion magnitude of the transformer 231. As shown IN fig. 2, the second rectifier bridge 221 IN fig. 2 is the same as the second rectifier bridge 221 IN fig. 1, except that IN fig. 2 is connected to both ends of the receiving coil 211, and OUT + and OUT-are connected to the positive and negative electrodes of the target electric vehicle battery B, respectively. Wherein, the voltage control unit includes: a power control chip 232, an output feedback control chip 233, an isolation feedback control chip 234 and an MOS tube 235; the power control chip 232 is connected with the grid electrode of the MOS tube 235, the drain electrode of the MOS tube 235 is connected with the primary coil of the transformer 231, and the source electrode of the MOS tube 235 is grounded; the power control chip 232 is further connected to the output feedback control chip 233 through the isolation feedback control chip 234, and the output feedback control chip 233 is further connected to the secondary winding of the transformer 231. The receiving unit 21 includes: a receiving coil 211 and a third resonance capacitor 212; the receiving coil 211 and the third resonant capacitor 212 are connected in parallel to the input end of the second rectifying and filtering unit 22. The second rectifying and filtering unit 22 includes: a second rectifier bridge 221 and a second filter capacitor 222, wherein the input end of the second rectifier bridge 221 is connected in parallel with the receiving coil 211, the output end of the second rectifier bridge 221 is connected in parallel with a third resonant capacitor 212, and the third resonant capacitor 212 is further connected with the switching converter 23. The receiving coil 211 receives the magnetic energy emitted by the transmitting coil and converts the magnetic energy into electric energy, the third resonant capacitor 212 enables the receiving coil 211 and the transmitting coil to resonate to obtain the highest efficiency, the second rectifier bridge 221 rectifies the received electric energy into direct current, the second filter capacitor 222 filters and receives carried noise waves, and the switch converter 23 adjusts and outputs stable direct current for charging the battery B through closed-loop voltage regulation. As shown in fig. 2, the MOS transistor 235 is operated in a self-tuning state, and the switch alternately stores energy in the inductor, and the transformer 231 mainly performs voltage transformation. The power control chip 232 provides high-speed pulse for the MOS tube 235, and simultaneously detects overvoltage and overvoltage to realize real-time control, the output feedback control chip 233 mainly adopts a programmable control chip to realize output end detection and synchronously feeds back to the power control chip 232 to realize adjustment output, and the isolation feedback control chip 234 mainly realizes isolation feedback between the height of the optical coupler, so that the circuit works in a closed loop state. Meanwhile, the diode 236 performs a voltage rectification function, and the energy storage capacitor 237 performs energy storage filtering on the secondary converted electric energy. VCC is shown high and GND is ground.
Through the electromagnetic induction principle, with digital module control, make output coil set for accurate resonant frequency, produce induction magnetic field, adopted digital regulation and control equally at receiving system, make transmission and receipt accurate matching resonant frequency, let the energy conversion efficiency of induction machine reach the highest, receive through filter capacitor, resonant capacitor, rectifier bridge circuit, the direct current is stabilized in the exportable, quick charging improves charge efficiency effectively.
In using, can set up emission module 1 in the wireless electric pile that fills of electric motor car, fill electric pile's host computer and adopt the current host computer that fills electric pile, the transmitter that charges is changed into to the port that charges of host computer, and the controller also is the equipment that former car was furnished with, and the commercial power electric wire netting of 220V is inserted to 1 one end of emission module that charges, and one end and receiving module 2 phase-matchs can accomplish the wireless charging of efficient. The vehicle that will install wireless receiver puts the one side that has the transmitter at wireless charging stake, with receiver and transmitter at same water flat line or perpendicular line to keep certain effective distance, put the vehicle, then pay with cell-phone scanning two-dimensional code, the payment is accomplished the back host computer and is started and carry out the pulsed and charge to the storage battery, the transmitter is for the equipment that contains emission module 1, the receiver is for the equipment that contains receiving module 2.
The invention discloses a wireless charging device of an electric vehicle, which comprises: a transmitting module 1 and a receiving module 2; the transmitting module 1 is connected with an alternating current power supply A, and the receiving module 2 is connected with a battery B of the target electric car; the transmitting module 1 transmits electric energy from the alternating current power supply A to the receiving module 2 through the electromagnetic induction principle, and the receiving module 2 stores the electric energy to the battery B of the target electric car. Adopt the technical scheme of this application for transmission module 1 turns into the magnetic energy with the electric energy through electromagnetic induction's principle and sends to receiving module 2, and receiving module 2 turns into the electric energy with magnetic energy again, and then charges for the electric motor car, and whole process need not the cable conductor, and real realization is wireless to be charged, has avoided the emergence of the dangerous problem of series because the cable conductor trouble brings.
It is understood that the same or similar parts in the above embodiments may be mutually referred to, and the same or similar parts in other embodiments may be referred to for the content which is not described in detail in some embodiments.
It should be noted that the terms "first," "second," and the like in the description of the present invention are used for descriptive purposes only and are not to be construed as indicating or implying relative importance. Further, in the description of the present invention, the meaning of "a plurality" means at least two unless otherwise specified.
In the description herein, references to the description of the term "one embodiment," "some embodiments," "an example," "a specific example," or "some examples," etc., mean that a particular feature, structure, material, or characteristic described in connection with the embodiment or example is included in at least one embodiment or example of the invention. In this specification, the schematic representations of the terms used above do not necessarily refer to the same embodiment or example. Furthermore, the particular features, structures, materials, or characteristics described may be combined in any suitable manner in any one or more embodiments or examples.
Although embodiments of the present invention have been shown and described above, it is understood that the above embodiments are exemplary and should not be construed as limiting the present invention, and that variations, modifications, substitutions and alterations can be made to the above embodiments by those of ordinary skill in the art within the scope of the present invention.
Claims (10)
1. An electric vehicle wireless charging device, comprising: a transmitting module and a receiving module;
the transmitting module is connected with an alternating current power supply, and the receiving module is connected with a battery of the target electric car;
the transmitting module transmits the electric energy from the alternating current power supply to the receiving module through an electromagnetic induction principle, and the receiving module stores the electric energy to a battery of the target electric car.
2. The wireless charging apparatus of claim 1, wherein the transmitting module comprises: the device comprises a first rectifying and filtering unit, an electric energy conversion unit and a transmitting unit;
the first rectifying and filtering unit is connected with an alternating current power supply and is also connected with the transmitting unit through the electric energy conversion unit;
the first rectification filter unit is used for rectifying alternating current of the alternating current power supply into unidirectional direct current and reducing alternating current ripple coefficient;
the electric energy conversion unit is used for converting the electric energy of the unidirectional direct current into magnetic energy;
the transmitting unit is used for transmitting the magnetic energy value and the receiving module.
3. The wireless charging device of claim 2, wherein the first rectifying and filtering unit comprises a first rectifying bridge and a first filtering capacitor;
the input end of the first rectifier bridge is connected with an alternating current power supply, the first output end of the first rectifier bridge is connected with the first end of the first filter capacitor, the second output end of the first rectifier bridge is connected with the second end of the first filter capacitor, and the first filter capacitor is connected to the two ends of the electric energy conversion unit in parallel;
the first rectifier bridge is used for rectifying alternating current into unidirectional direct current, and the first filter capacitor is used for reducing alternating current ripple coefficients.
4. The wireless charging apparatus of claim 3, wherein the power conversion unit comprises: the circuit comprises a microcontroller, a first resonant capacitor, a second resonant capacitor, a first high-frequency switching tube and a second high-frequency switching tube;
the grid electrode of the first high-frequency switching tube is connected with the microcontroller, the source electrode of the first high-frequency switching tube is connected with the first output end of the first rectifier bridge, and the drain electrode of the first high-frequency switching tube is connected with the source electrode of the second high-frequency switching tube;
the grid electrode of the second high-frequency switching tube is connected with the microcontroller, and the drain electrode of the second high-frequency switching tube is connected with the second output end of the first rectifier bridge;
the first resonance capacitor and the second resonance capacitor are connected in series and then connected in parallel to two ends of the first rectifier bridge.
5. The wireless charging apparatus according to claim 4, wherein the transmitting unit is a transmitting coil;
one end of the transmitting coil is connected with the drain electrode of the first high-frequency switching tube, and the other end of the transmitting coil is connected with the first resonant capacitor.
6. The wireless charging apparatus of claim 1, wherein the receiving module comprises: the receiving unit, the second rectifying and filtering unit and the switching converter;
the receiving unit is connected with the input end of the second rectifying and filtering unit, the output end of the second rectifying and filtering unit is connected with the input end of the switch converter, and the output end of the switch converter is connected with the battery of the target electric car;
the receiving unit is used for receiving the magnetic energy of the transmitting module and converting the magnetic energy into electric energy;
the second rectifying and filtering unit is used for rectifying the received electric energy into direct current and filtering clutter of the received electric energy;
the switching converter is used for outputting stable direct current to charge a battery of the target electric car.
7. The wireless charging apparatus of claim 6, wherein the switching converter comprises: a transformer and a voltage control unit;
the input end of the transformer is connected with the voltage control unit and the output end of the second rectifying and filtering unit;
the output end of the transformer is connected with a battery of the target electric car;
the voltage control unit is used for controlling the voltage conversion of the transformer.
8. The wireless charging apparatus according to claim 7, wherein the voltage control unit comprises: the power supply control chip, the output feedback control chip, the isolation feedback control chip and the MOS tube are connected in series;
the power control chip is connected with the grid electrode of the MOS tube, the drain electrode of the MOS tube is connected with the primary coil of the transformer, and the source electrode of the MOS tube is grounded;
the power supply control chip is also connected with the output feedback control chip through the isolation feedback control chip, and the output feedback control chip is also connected with a secondary coil of the transformer.
9. The wireless charging apparatus of claim 6, wherein the receiving unit comprises: a receiving coil and a third resonant capacitor;
the receiving coil and the third resonant capacitor are connected in parallel to the input end of the second rectifying and filtering unit.
10. The wireless charging device according to claim 9, wherein the second rectifying and filtering unit includes: a second rectifier bridge and a second filter capacitor;
the input end of the second rectifier bridge is connected with the receiving coil in parallel, the output end of the second rectifier bridge is connected with the third resonant capacitor in parallel, and the third resonant capacitor is further connected with the switch converter.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202010566254.5A CN111740484A (en) | 2020-06-19 | 2020-06-19 | Wireless charging device of electric vehicle |
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202010566254.5A CN111740484A (en) | 2020-06-19 | 2020-06-19 | Wireless charging device of electric vehicle |
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| CN111740484A true CN111740484A (en) | 2020-10-02 |
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Citations (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104065178A (en) * | 2014-06-20 | 2014-09-24 | 中国矿业大学 | Three-phase load single-phase wireless power supply system and design method thereof |
| CN210680419U (en) * | 2019-08-21 | 2020-06-05 | 王万辉 | Wireless charging pile for electric vehicle |
| CN210780562U (en) * | 2019-12-10 | 2020-06-16 | 王万辉 | Wireless charging power adapter of electric vehicle |
-
2020
- 2020-06-19 CN CN202010566254.5A patent/CN111740484A/en active Pending
Patent Citations (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104065178A (en) * | 2014-06-20 | 2014-09-24 | 中国矿业大学 | Three-phase load single-phase wireless power supply system and design method thereof |
| CN210680419U (en) * | 2019-08-21 | 2020-06-05 | 王万辉 | Wireless charging pile for electric vehicle |
| CN210780562U (en) * | 2019-12-10 | 2020-06-16 | 王万辉 | Wireless charging power adapter of electric vehicle |
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