CN107399244B - Wireless charging system of portable vehicle - Google Patents
Wireless charging system of portable vehicle Download PDFInfo
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- CN107399244B CN107399244B CN201710626440.1A CN201710626440A CN107399244B CN 107399244 B CN107399244 B CN 107399244B CN 201710626440 A CN201710626440 A CN 201710626440A CN 107399244 B CN107399244 B CN 107399244B
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- 238000005516 engineering process Methods 0.000 description 7
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- 230000005540 biological transmission Effects 0.000 description 4
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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
- B60L53/60—Monitoring or controlling charging stations
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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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- 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
- B60L53/30—Constructional details of charging stations
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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
- Y02T90/00—Enabling technologies or technologies with a potential or indirect contribution to GHG emissions mitigation
- Y02T90/10—Technologies relating to charging of electric vehicles
- Y02T90/12—Electric charging stations
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- 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
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- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
- Y02T—CLIMATE CHANGE MITIGATION TECHNOLOGIES RELATED TO TRANSPORTATION
- Y02T90/00—Enabling technologies or technologies with a potential or indirect contribution to GHG emissions mitigation
- Y02T90/10—Technologies relating to charging of electric vehicles
- Y02T90/16—Information or communication technologies improving the operation of electric vehicles
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- Engineering & Computer Science (AREA)
- Power Engineering (AREA)
- Transportation (AREA)
- Mechanical Engineering (AREA)
- Charge And Discharge Circuits For Batteries Or The Like (AREA)
- Current-Collector Devices For Electrically Propelled Vehicles (AREA)
Abstract
The invention provides a mobile vehicle wireless charging system. The system comprises a vehicle position detection device consisting of a vehicle-mounted wireless signal transmitting module and a ground wireless signal receiving module, and a resonance energy transmitting circuit and a resonance vehicle-mounted energy receiving device which are laid underground. When the electric automobile detects that the battery is in a power-shortage state and wants to enter a charging road section, the vehicle-mounted signal transmitting device is started and transmits signals. And when the ground signal receiving device receives the signal transmitted by the ground signal receiving device, starting an energy transmitting coil laid underground in the charging section, and entering a pre-charging preparation state. Therefore, on one hand, the problems of slow charging preparation and the like of the electric vehicle in the moving process of the charging road section can be avoided; on the other hand, the problem of energy loss caused by the fact that the energy transmitting coil is always in a working state is avoided.
Description
Technical Field
The invention belongs to the technical field of wireless charging, and particularly relates to a mobile vehicle wireless charging system.
Background
In the face of increasingly severe energy conservation and emission reduction pressure, the world automobile industry enters a comprehensive traffic energy transformation period. Green clean energy becomes a hot spot in the world, and the development of electric vehicles becomes the development trend of the clean energy. The vigorous development of electric vehicles has become a definite direction for governments in the united states, china and europe to develop new energy vehicles, and the development of international electric vehicles is accelerated.
However, the charging problem is one of the important factors that restrict the widespread use and development of electric vehicles. At present, most of electric automobiles adopt a contact wired charging mode, and energy supplement of a power battery pack is realized through metal connection of a plug and a socket. There are many inherent drawbacks to this wired charging approach: the plug-in type electric vehicle is easy to generate sparks, easy to wear, not easy to maintain, not flexible enough and the like, and reduces the driving experience of the electric vehicle to a certain extent.
Therefore, the non-contact charging of the electric vehicle is a new direction of research. The Wireless Power Transmission (WPT) technology developed in recent years provides a new idea for solving the above problems. Compared with the traditional contact charging technology, the wireless charging has some remarkable advantages: the power utilization equipment is flexible in movement and is allowed to move freely in a certain range. Secondly, the environment adaptation is strong, the existence of exposed conductors and the generation of contact sparks are avoided, and the method is suitable for various severe environments and weathers. And the requirement of unified physical interface standard is avoided. The wireless charging technology of electric automobile promotes electric automobile's use experience with greatly increased convenience, flexibility and the security of charging.
At present, the mobile wireless charging technology of the electric automobile is in a starting stage at home, and a plurality of companies and scientific research institutes are developing technologies and products. As one of the leading-edge technologies of the new energy automobile industry, the mobile wireless charging technology of the electric automobile has a wide development prospect.
In a mobile vehicle wireless charging system, if an energy transmitting coil laid underground in a charging road section is always in a working state, a large amount of energy is wasted; if the energy transmitting coil is turned on and is in a working state when the electric automobile runs to the charging section, a part of charging opportunities of the electric automobile can be lost in a distance before the charging section.
Disclosure of Invention
The invention aims to provide a mobile vehicle charging system which is used for solving the problems of untimely charging and the like in the moving process of the system.
In order to solve the technical problems, the technical scheme of the invention is as follows:
the invention discloses a mobile vehicle wireless charging system, which comprises a wireless charging station and an electric vehicle, wherein the wireless charging station is connected with the electric vehicle; the wireless charging station at least comprises a section of starting road section and a section of charging road section which are continuously arranged; the starting road section is provided with a wireless signal receiving device and an acquisition circuit connected with the wireless signal receiving device, and the acquisition circuit is connected with the ground control unit; an energy transmitting coil and a ground power supply circuit connected with the energy transmitting coil are buried underground in the charging section, and the ground control unit is connected with the ground power supply circuit; the electric automobile comprises a signal transmitting device matched with the signal receiving device of the initial road section, an energy receiving coil matched with the energy transmitting coil of the charging road section and a charging circuit of the energy receiving coil; when the electric automobile passes through the initial road section, a signal is transmitted, and the wireless signal receiving device receives the transmitted signal and then pre-charges the energy transmitting coil.
Furthermore, the signal transmitting device of the electric automobile comprises a transmitting coil and a signal generating circuit connected with the transmitting coil.
Furthermore, the signal generating circuit is provided with a switch for controlling whether the signal generating circuit works or not.
Furthermore, the signal receiving device comprises a receiving coil, a rectifying circuit connected with the receiving coil and a voltage dividing circuit connected with the rectifying circuit; the voltage division circuit outputs a voltage signal to the ground control unit.
Furthermore, the ground power supply circuit comprises an inverter circuit and a resonance circuit formed by a coil and a capacitor; and the ground power supply circuit is connected with the ground control unit and the ground power supply system.
The invention relates to a mobile vehicle wireless charging system, which comprises a wireless charging station; the wireless charging station at least comprises a section of starting road section and a section of charging road section which are continuously arranged; the starting road section is provided with a wireless signal receiving device and an acquisition circuit connected with the wireless signal receiving device, and the acquisition circuit is connected with the ground control unit; an energy transmitting coil and a ground power supply circuit connected with the energy transmitting coil are buried underground in the charging section, and the ground control unit is connected with the ground power supply circuit; when the electric automobile passes through the initial road section, a signal is transmitted, and the wireless signal receiving device receives the transmitted signal and then pre-charges the energy transmitting coil.
Furthermore, the signal receiving device comprises a receiving coil, a rectifying circuit connected with the receiving coil and a voltage dividing circuit connected with the rectifying circuit; the voltage division circuit outputs a voltage signal to the ground control unit.
Furthermore, the ground power supply circuit comprises an inverter circuit and a resonance circuit formed by a coil and a capacitor; and the ground power supply circuit is connected with the ground control unit and the ground power supply system.
The invention has the beneficial effects that:
the wireless charging system is characterized in that a starting road section connected with the charging road section is arranged, and a wireless signal receiving device matched with a wireless signal transmitting device on the electric vehicle is arranged on the starting road section and used for receiving a charging signal of the vehicle and transmitting the received charging signal to the ground control unit. The ground control unit starts the energy transmitting coil of the charging section to carry out pre-charging, so that when the electric vehicle enters the charging section, the energy transmitting coil is in a working state, and efficient energy transmission can be carried out with the charging vehicle.
By adopting the transmitting and receiving coil as the wireless signal transmitting and receiving device, the condition of false triggering can be avoided.
By setting the switch for the wireless signal transmitting device, the signal transmitting device can be prevented from being in a working state all the time, and unnecessary energy consumption is avoided.
Drawings
Fig. 1 is a schematic diagram of a mobile wireless charging system;
FIG. 2 is a circuit of a vehicle-mounted signal transmitting module according to embodiment 1;
FIG. 3 is a circuit of a ground signal receiving module according to embodiment 1;
fig. 4 is a vehicle wireless charging circuit.
Detailed Description
In order to make the objects, technical solutions and advantages of the present invention clearer, the present invention is further described in detail below with reference to the accompanying drawings and embodiments.
The mobile wireless charging system comprises an electric automobile and a mobile wireless charging station. As shown in fig. 1: the wireless charging system specifically includes: the system comprises a wireless signal transmitting device 2 on the electric automobile 1, an initial road section 3, a ground wireless receiving device 4 arranged at the initial road section 3 and an energy transmitting coil 6 laid underground in a charging road section 5. When the vehicle enters the initial road section, the ground wireless receiving device receives the charging signal. After receiving the charging signal, the ground wireless receiving device transmits the charging signal to the ground control unit to start the energy transmitting coil of the charging section to enter pre-charging preparation.
In a mobile wireless charging system, if an energy transmitting coil laid underground in a charging road section is always in a working state, a large amount of energy is wasted; if the energy transmitting coil is turned on to be in a working state when the electric automobile runs to the charging section, a part of charging opportunities of the electric automobile can be lost in a previous distance of the charging section.
In order to solve the problems, the system is provided with a ground wireless signal receiving device at the initial road section. For detecting a position signal of the vehicle. If the electric automobile detects that the battery is in a power shortage state, the wireless signal transmitting device is started when the electric automobile is about to run to the charging road section, and the wireless signal transmitting device transmits signals. And when the ground signal receiving device receives the signal transmitted by the ground signal receiving device, starting an energy transmitting coil laid underground in the charging section, and entering a pre-charging preparation state. On one hand, the problems of slow charging preparation and the like of the electric vehicle in the moving process of the charging road section can be avoided; on the other hand, the problem of energy loss caused by the fact that the energy transmitting coil is always in a working state is avoided.
Example 1:
the vehicle-mounted transmitting device is shown in FIG. 2: the positive electrode of a vehicle battery is connected with the drain electrode of a third switching tube Q7, the source electrode of the third switching tube Q7 is connected with the drain electrode of a first switching tube Q1 and one end of a capacitor C2, the negative electrode of the battery is connected with the source electrode of a second switching tube Q2 and one end of a capacitor C3, the other end of the capacitor C2 is connected with the other end of a capacitor C3, a magnetic induction coil L1 and a capacitor C1, the other ends of the magnetic induction coil L1 and the capacitor C1 are connected with the source electrode of the first switching tube Q1 and the drain electrode of the second switching tube Q2, the grid electrodes of the first switching tube Q1 and the second switching tube Q2 are respectively connected with driving resistors R1 and R2, and the other ends of the driving resistors R1 and R2 are connected with a vehicle-mounted. The gate of the third switching tube Q7 is connected to the vehicle control unit.
The ground receiving device is shown in fig. 3: one end of an induction coil L2 is connected with one end of a compensation capacitor C4 and a 2-pin alternating-current end of a rectifier bridge D1, the other end of the induction coil L2 is connected with the other end of a compensation capacitor C4 and a 3-pin alternating-current end of a rectifier bridge D1, pins 1 and 4 of a rectifier bridge D1 are respectively connected with two ends of a supporting capacitor C3, a pin 1 of a rectifier bridge D1 is connected with one end of a voltage division resistor R3, a pin 4 of D1 is connected with one ends of voltage division resistors R4 and R6, the other end of the voltage division resistor R3 is connected with the other end of R4 and a resistor R5, the other ends of resistors R5 and R6 are respectively connected with input ends 5 and 6 of an operational amplifier U1B, and a pin 7 of an output end of the operational amplifier is output to a ground control unit.
When the electric automobile detects that the battery is in a power-deficient state, the electric automobile intends to enter a charging section in which an energy transmitting coil is laid underground. When the moving vehicle enters the charging section, the vehicle control unit (the vehicle control unit can adopt the DSP and the FPGA for control) controls the switch Q7 to enter the open state. As shown in fig. 2: at this time, the positive electrode of the vehicle battery is added to the drain of the first switching tube Q1 and one end of the capacitor C2, and the vehicle-mounted control unit sends out a driving waveform through the driving circuit, drives the first switching tube Q1 through the resistor R1 and drives the second switching tube Q2 through the resistor R2. The duty ratio of the driving waveform is expanded according to the vehicle-mounted control unit, and the expanded duty ratio is a fixed value. According to duty ratios sequentially sent by the vehicle-mounted control unit, the on-off states of the first switch tube Q1 and the second switch tube Q2 are controlled to form an inverter circuit, so that the magnetic induction coil L1 forms a sine alternating current waveform. The compensation capacitor C1 compensates for the sine wave generated by the magnetic induction coil L1, thereby preventing waveform distortion.
The ac waveform of the induction coil L1 is inductively transferred to the induction coil L2 to generate a corresponding induced ac voltage. The capacitor C4 and the capacitor C1 have the same function, i.e. compensate the induced alternating current, so as to meet the requirement of stable and accurate energy of the receiving induction coil L2. As shown in fig. 3: alternating current signals induced by the induction coil L2 are rectified by the rectifier bridge D1, and the rectified voltage value cannot meet the requirement of required voltage signals. Therefore, the capacitor C5 filters the rectified signal, the filtered signal is divided by the voltage dividing resistors R3 and R4 to be preset to enter the operational amplifier U1B, and the operational amplifier U1B outputs the operational output to the ground control unit. Wherein, it can be set that when the maximum signal is detected, the output signal of U1B generates jump, and the jump is detected to determine the precharge time. In addition, in order to realize signal acquisition, the operational amplifier is not required to be arranged, the voltage at the two ends of the voltage dividing resistor can be directly acquired, and the pre-charging time is determined according to the specific voltage value.
The surface control unit prepares the underground-laid energy transmitting coils for pre-charging by the voltage output by the operational amplifier U1B. As shown in fig. 4: the ground control unit respectively drives the switching tubes Q3, Q4, Q5 and Q6 through the driving resistors R10, R11, R12 and R13, at this time, the ground resonance coil L3 and the resonance capacitor C6 are precharged, the resonance inductor L3 and the resonance capacitor C6 form a resonance loop, and the resonance frequency is the frequency of the ground control unit driving the switching tubes Q3, Q4, Q5 and Q6. When the electric automobile resonance coil L4 enters the resonance coil L3, resonance transmission energy starts to be carried out, and the vehicle receiving resonance coil L4 resonates with the resonance capacitor to receive corresponding energy. And the resonant frequency of the resonant capacitor is the same as the resonant frequency of the transmitting end, so that the inductance of the resonant inductor L3 is the same as that of the resonant inductor L4, and the capacitance of the resonant capacitor is the same as that of the resonant capacitor. After receiving energy, the vehicle is rectified by the diode rectifier bridge and then is connected to a vehicle-mounted charger to charge a vehicle battery.
Example 2:
the vehicle-mounted transmitting device and the ground receiving device adopt infrared transmitting and receiving devices.
An infrared transmitting device is installed on the electric automobile, and an infrared receiving device is installed at the initial position of the charging road section. When the electric automobile detects that the battery is in a power-deficient state and wants to enter a charging road section paved with energy transmitting coils underground, the vehicle-mounted infrared transmitting device is manually started. When the vehicle runs to the starting position of the road section, the infrared receiving device on the ground receives a charging signal of the electric vehicle, the acquisition circuit connected with the infrared receiving device transmits the signal to the ground control unit, and the ground control unit starts an energy transmitting coil laid under the ground of the charging road section to enter a pre-charging preparation state.
Compared with the embodiment 1, the position judgment of whether the vehicle runs to the charging road section by using the infrared transmitting and receiving device is simpler and more convenient to implement.
Through the cooperation of the vehicle-mounted transmitting device and the ground receiving device, whether the electric automobile runs to the charging section can be accurately judged, the energy transmitting coil paved underground in the charging section is started in advance, and the electric automobile enters a pre-charging preparation state. On one hand, the problems of slow communication transmission and the like of the electric vehicle in the moving process of the charging road section can be avoided; on the other hand, the problem of energy loss caused by the fact that the energy transmitting coil is always in a working state is also avoided.
While the present invention has been described in detail with reference to the preferred embodiments, it should be understood that the above description should not be taken as limiting the invention. Various modifications and alterations to this invention will become apparent to those skilled in the art upon reading the foregoing description. Accordingly, the scope of the invention should be determined from the following claims.
Claims (8)
1. The utility model provides a wireless charging system of portable vehicle which characterized in that: the system comprises a wireless charging station and an electric automobile; the wireless charging station at least comprises a section of starting road section and a section of charging road section which are sequentially and continuously arranged along the driving direction of the vehicle; the starting road section is provided with a wireless signal receiving device and an acquisition circuit connected with the wireless signal receiving device, and the acquisition circuit is connected with the ground control unit; an energy transmitting coil and a ground power supply circuit connected with the energy transmitting coil are buried underground in the charging section, and the ground control unit is connected with the ground power supply circuit; the electric automobile comprises a signal transmitting device matched with the signal receiving device of the initial road section, an energy receiving coil matched with the energy transmitting coil of the charging road section and a charging circuit of the energy receiving coil; when the electric automobile detects that the battery is in a power-shortage state, the signal transmitting device is started to transmit a signal when the electric automobile passes through the starting road section, namely the charging road section is about to be driven, and the wireless signal receiving device pre-charges the energy transmitting coil after receiving the transmitted signal;
the specific structure of the signal transmitting device is as follows:
the positive electrode of a vehicle battery is connected with the drain electrode of a third switching tube Q7, the source electrode of the third switching tube Q7 is connected with the drain electrode of a first switching tube Q1 and one end of a capacitor C2, the negative electrode of the battery is connected with the source electrode of a second switching tube Q2 and one end of a capacitor C3, the other end of the capacitor C2 is connected with the other end of a capacitor C3, a magnetic induction coil L1 and a capacitor C1, the other ends of the magnetic induction coil L1 and the capacitor C1 are connected with the source electrode of the first switching tube Q1 and the drain electrode of the second switching tube Q2, the grid electrodes of the first switching tube Q1 and the second switching tube Q2 are respectively connected with driving resistors R1 and R2, and the other ends of the driving resistors R1 and R2 are connected with a vehicle-mounted; the grid electrode of the third switching tube Q7 is connected with the vehicle-mounted control unit;
the wireless signal receiving device is connected with the acquisition circuit, and the acquisition circuit is connected with the concrete connection structure of the ground control unit:
one end of an induction coil L2 is connected with one end of a compensation capacitor C4 and a 2-pin alternating-current end of a rectifier bridge D1, the other end of the induction coil L2 is connected with the other end of a compensation capacitor C4 and a 3-pin alternating-current end of a rectifier bridge D1, pins 1 and 4 of the rectifier bridge D1 are respectively connected with two ends of a supporting capacitor C5, a pin 1 of the rectifier bridge D1 is connected with one end of a voltage division resistor R3, a pin 4 of D1 is connected with one ends of voltage division resistors R4 and R6, the other end of the voltage division resistor R3 is connected with the other end of R4 and one end of a resistor R5, the other ends of resistors R5 and R6 are respectively connected with input ends 5 and 6 of an operational amplifier U1B, and a pin 7 of an output end of the operational amplifier is output to a ground control.
2. The mobile vehicle wireless charging system of claim 1, wherein: the signal transmitting device of the electric automobile comprises a transmitting coil and a signal generating circuit connected with the transmitting coil.
3. The mobile vehicle wireless charging system of claim 2, wherein: the signal generating circuit is provided with a switch for controlling whether the signal generating circuit works or not.
4. The mobile vehicle wireless charging system of claim 2 or 3, wherein: the signal receiving device comprises a receiving coil, a rectifying circuit connected with the receiving coil and a voltage dividing circuit connected with the rectifying circuit; the voltage division circuit outputs a voltage signal to the ground control unit.
5. The mobile vehicle wireless charging system of claim 1, wherein: the ground power supply circuit comprises an inverter circuit and a resonance circuit formed by a coil and a capacitor; and the ground power supply circuit is connected with the ground control unit and the ground power supply system.
6. The utility model provides a wireless charging system of portable vehicle which characterized in that: the system comprises a wireless charging station; the wireless charging station at least comprises a section of starting road section and a section of charging road section which are sequentially and continuously arranged along the driving direction of the vehicle; the starting road section is provided with a wireless signal receiving device and an acquisition circuit connected with the wireless signal receiving device, and the acquisition circuit is connected with the ground control unit; an energy transmitting coil and a ground power supply circuit connected with the energy transmitting coil are buried underground in the charging section, and the ground control unit is connected with the ground power supply circuit; when the electric automobile detects that the battery is in a power-shortage state, a signal transmitting device matched with the wireless signal receiving device is started when the electric automobile passes through the starting road section, namely the charging road section is about to be driven, a signal is transmitted, and the wireless signal receiving device receives the transmitted signal and then pre-charges the energy transmitting coil;
the specific structure of the signal transmitting device is as follows:
the positive electrode of a vehicle battery is connected with the drain electrode of a third switching tube Q7, the source electrode of the third switching tube Q7 is connected with the drain electrode of a first switching tube Q1 and one end of a capacitor C2, the negative electrode of the battery is connected with the source electrode of a second switching tube Q2 and one end of a capacitor C3, the other end of the capacitor C2 is connected with the other end of a capacitor C3, a magnetic induction coil L1 and a capacitor C1, the other ends of the magnetic induction coil L1 and the capacitor C1 are connected with the source electrode of the first switching tube Q1 and the drain electrode of the second switching tube Q2, the grid electrodes of the first switching tube Q1 and the second switching tube Q2 are respectively connected with driving resistors R1 and R2, and the other ends of the driving resistors R1 and R2 are connected with a vehicle-mounted; the grid electrode of the third switching tube Q7 is connected with the vehicle-mounted control unit;
the wireless signal receiving device is connected with the acquisition circuit, and the acquisition circuit is connected with the concrete connection structure of the ground control unit:
one end of an induction coil L2 is connected with one end of a compensation capacitor C4 and a 2-pin alternating-current end of a rectifier bridge D1, the other end of the induction coil L2 is connected with the other end of a compensation capacitor C4 and a 3-pin alternating-current end of a rectifier bridge D1, pins 1 and 4 of the rectifier bridge D1 are respectively connected with two ends of a supporting capacitor C5, a pin 1 of the rectifier bridge D1 is connected with one end of a voltage division resistor R3, a pin 4 of D1 is connected with one ends of voltage division resistors R4 and R6, the other end of the voltage division resistor R3 is connected with the other end of R4 and one end of a resistor R5, the other ends of resistors R5 and R6 are respectively connected with input ends 5 and 6 of an operational amplifier U1B, and a pin 7 of an output end of the operational amplifier is output to a ground control.
7. The mobile vehicle wireless charging system of claim 6, wherein: the signal receiving device comprises a receiving coil, a rectifying circuit connected with the receiving coil and a voltage dividing circuit connected with the rectifying circuit; the voltage division circuit outputs a voltage signal to the ground control unit.
8. The mobile vehicle wireless charging system of claim 7, wherein: the ground power supply circuit comprises an inverter circuit and a resonance circuit formed by a coil and a capacitor; and the ground power supply circuit is connected with the ground control unit and the ground power supply system.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201710626440.1A CN107399244B (en) | 2017-07-27 | 2017-07-27 | Wireless charging system of portable vehicle |
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| Application Number | Priority Date | Filing Date | Title |
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| JP5909714B2 (en) * | 2009-11-13 | 2016-04-27 | パナソニックＩｐマネジメント株式会社 | Charging and feeding system for vehicles |
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