CN114394004B - Wireless charging device is shared to storage battery car - Google Patents
Wireless charging device is shared to storage battery car Download PDFInfo
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- CN114394004B CN114394004B CN202111681895.6A CN202111681895A CN114394004B CN 114394004 B CN114394004 B CN 114394004B CN 202111681895 A CN202111681895 A CN 202111681895A CN 114394004 B CN114394004 B CN 114394004B
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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
- B60L53/10—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
- B60L53/122—Circuits or methods for driving the primary coil, e.g. supplying electric power to the coil
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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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- 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
- H02J50/40—Circuit arrangements or systems for wireless supply or distribution of electric power using two or more transmitting or receiving devices
- H02J50/402—Circuit arrangements or systems for wireless supply or distribution of electric power using two or more transmitting or receiving devices the two or more transmitting or the two or more receiving devices being integrated in the same unit, e.g. power mats with several coils or antennas with several sub-antennas
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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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- 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
- Y02T90/14—Plug-in electric vehicles
Landscapes
- Engineering & Computer Science (AREA)
- Power Engineering (AREA)
- Transportation (AREA)
- Mechanical Engineering (AREA)
- Computer Networks & Wireless Communication (AREA)
- Charge And Discharge Circuits For Batteries Or The Like (AREA)
Abstract
The utility model discloses a shared wireless charging device for an electric vehicle, which combines wireless charging with a fixed pile of the shared electric vehicle, is light and simple, designs the fixed pile as a charging pile, installs a plurality of transmitting coils at the top, winds an insulating coil at the outer side of each transmitting end, uniformly distributes the transmitting coils at the top and carries a man-machine interaction platform; a plurality of receiving coils are arranged at the bottom of the basket and serve as receiving ends of the wireless charging platform, and insulating coils are wound on the outer sides of the coils; the solar panel is arranged at the top of the basket, so that solar energy in the driving process can be converted into electric energy, and the electric quantity is supplemented and emergency use is realized; the transmitting end and the receiving end are controlled by the single chip microcomputer, the man-machine interaction interface can be realized, the transmitting power and the receiving power can be controlled in real time, the charging data set and the transmitting data set can be collected, and the problems of difficult charging of the battery car, difficult management of the battery car, potential safety hazards such as charging of a private pull wire and the like are skillfully solved.
Description
Technical Field
The utility model belongs to the technical field of wireless charging, and particularly relates to a shared wireless charging device for an electric vehicle.
Background
Wireless charging technology has matured in recent years, wireless charging based on electromagnetic induction principle is most widely used at present, and the wireless charging technology is vigorously developed in the aspects of low-power charging such as digital equipment charging and the like. The wireless charging technology has great potential in the market, and a wireless charging mode provides a more convenient mode for equipment charging.
The wireless charging power supply mainly uses the WPC alliance in the market, the principle is based on the electromagnetic induction principle, the receiver feeds back information codes to the transmitter, the modulation mode is an analog and digital combined PING mode, the output power is 5W, and the main power receiving end is a smart phone. Moreover, the WPC alliance wireless charging technology also has the defects and limitations of small output power, short power transmission distance and the like. For electric equipment with 200W charging power requirements such as battery cars, no relatively mature product exists in the market.
Through searching, related patents have been disclosed to solve the defects of small output power, short power transmission distance and the like in the wireless charging technology. For example, chinese patent application No.: CN201120265544.2, filing date: the utility model patent of 7 months and 26 days 2011 discloses a wireless charging system for an electric vehicle. The charging system comprises a power supply end connected with a power grid and a power receiving end arranged on the electric vehicle and connected with a storage battery of the electric vehicle, wherein the power supply end comprises a rectifying unit, a high-frequency inversion unit and a transmitting coil which are sequentially connected in series, and the input end of the rectifying unit is connected with the power grid; the power receiving end comprises a receiving coil and a rectifying unit which are connected in series, wherein the output end of the rectifying unit is connected with a storage battery of the electric vehicle; and magnetic cores are arranged in the transmitting coil and the receiving coil. This scheme has adopted fixed charging seat, needs to install receiving coil elevation structure on the vehicle and guarantees the received power, and is with high costs, uses loaded down with trivial details.
For another example, chinese patent application No.: CN202110361597.2, filing date: 2021, 4 and 2, discloses a wireless charging device for an electric bicycle. The device comprises an electric bicycle and a charging pile for wirelessly charging the electric bicycle; the electric bicycle comprises a wireless charging receiver, a controller, a rechargeable battery and a power drive; the charging pile comprises a wireless charging transmitter and a control box; the wireless charging receiver is of a tubular structure, is arranged on a handle of the electric bicycle, and is of a tubular structure, and is matched with the wireless charging receiver; the control box is connected with the wireless charging transmitter and is used for supplying power to and controlling the wireless charging transmitter; the wireless charging receiver is electrically connected with the rechargeable battery and is used for generating induced electromotive force to supply power to the rechargeable battery according to electromagnetic waves emitted by the wireless charging transmitter; the controller controls the rechargeable battery to supply power to the power drive and controls the power drive to work. The scheme adopts a special plug-in structure, the wireless charging transmitting and receiving coils are placed in the special plug-in structure, the coils are kept within a reliable distance through plug-in, and compared with wired charging, the method has no great advantage in convenience and reduces efficiency.
Disclosure of Invention
Aiming at the problems of lower charging efficiency, complex structure, poor convenience and inconvenient use of the conventional wireless charging technology, the utility model provides the storage battery car sharing wireless charging device which is provided with the bracket type wireless charging transmitter and the wireless charging device combined with the basket, so that the defects of low output power, short vertical electric quantity transmission distance, inconvenient use and the like are overcome, and the applicability of the wireless charger is improved.
In order to solve the problems, the utility model adopts the following technical scheme.
The wireless charging device comprises a receiving device, a charging converter and a transmitting device, wherein the transmitting device is fixed on the upper part of a fixed bracket for fixing front wheels of the electric vehicle, and the receiving device is arranged in a vehicle basket; the input end of the transmitting device is connected with an external power supply, the output end of the transmitting device is connected with the input end of the receiving device, and the output end of the receiving device is connected with an electric vehicle storage battery through a charging converter.
According to a further technical scheme, the transmitting device comprises a transmitting device shell, a transmitting coil set and a transmitting end control circuit; the shell of the transmitting device is arranged at the upper part of the fixed bracket; the transmitting coil group and the transmitting end control circuit are arranged in the shell of the transmitting device; the input end of the transmitting end control circuit is connected with an external power supply, the output end of the transmitting end control circuit is connected with the input end of the transmitting coil set, and the output end of the transmitting coil set is connected with the receiving device.
According to a further technical scheme, the transmitting device further comprises a man-machine interaction screen, and the man-machine interaction screen is arranged above the shell of the transmitting device; the man-machine interaction screen is in bidirectional communication connection with the transmitting end control circuit, and the transmitting end control circuit is in Bluetooth communication connection with the user mobile phone.
According to a further technical scheme, the receiving device comprises a wireless charging receiving coil set and a primary resonance rectifying circuit, wherein the wireless charging receiving coil set is arranged in the bicycle basket, and the primary resonance rectifying circuit is arranged at the bottom of the bicycle basket; one end of the wireless charging receiving coil set is connected with the output end of the transmitting coil set, the other end of the wireless charging receiving coil set is connected with the input end of the primary resonance rectifying circuit, and the output end of the primary resonance rectifying circuit is connected with the input end of the charging converter.
Further technical scheme, receiving arrangement still includes the magnetic conduction board, the inside at the bicycle basket is installed to the magnetic conduction board, and is located wireless charging receiving coil group's top.
According to a further technical scheme, the receiving device further comprises a solar panel, and the output end of the solar panel is connected with the electric vehicle storage battery.
According to a further technical scheme, the primary resonance rectifying circuit comprises a capacitor CC1, a capacitor CC2, a capacitor CC3, a capacitor CC4, a capacitor C1, a capacitor C2, a diode D2 and a diode D3;
one end of each of the capacitor CC1, the capacitor CC2, the capacitor CC3 and the capacitor CC4 is connected with the output end two of the wireless charging receiving coil set, and the other end of each of the capacitor CC1, the capacitor CC2, the capacitor CC3 and the capacitor CC4 is connected with the cathode of the diode D2 and the anode of the diode D3, and the cathode of the diode D3 is connected with the capacitor C 1 And capacitor C 2 The anode of the diode D2, the other ends of the capacitor C1 and the capacitor C2 and the output end of the wireless charging receiving coil set are grounded; the two ends of the capacitor C2 form the output end of the primary resonance rectifying circuit.
According to a further technical scheme, a bottom protection cover is movably arranged at the bottom of the bicycle basket.
Further technical scheme is equipped with the protection baffle in the periphery of human-computer interaction screen.
Compared with the prior art, the utility model has the beneficial effects that:
(1) According to the storage battery car sharing wireless charging device, a multi-coil transmitting and receiving mode is used, the magnetic conducting sheets are added to increase magnetic flux, and the wireless charging receiving distance and the charging efficiency are improved.
(2) The battery car sharing wireless charging device provided by the utility model has a man-machine interaction interface, can control a system and can acquire the running condition of the device from the interaction interface.
(3) The storage battery car sharing wireless charging device disclosed by the utility model has the advantages of no need of additional mechanical parts, low cost and easiness in use, and the wireless charging can be realized by only slightly changing the existing product.
(4) The battery car sharing wireless charging device adopts a fully fixed structure without movable parts, so that the battery car sharing wireless charging device has the advantages of good durability, good sealing performance and difficult damage.
Drawings
FIG. 1 is a schematic diagram of a wireless charging basket of the present utility model;
FIG. 2 is a schematic view of the bottom of the wireless charging basket of the present utility model;
FIG. 3 is a diagram of the internal structure of the wireless charging basket of the present utility model;
FIG. 4 is a schematic diagram of a transmitting device according to the present utility model;
FIG. 5 is an internal structural view of a transmitting device of the present utility model;
FIG. 6 is a schematic view of the structure of the charging pile according to the present utility model;
FIG. 7 is a diagram of a receiver according to the present utility model;
FIG. 8 is a schematic diagram of a primary resonant rectifier circuit according to the present utility model;
FIG. 9 is a schematic diagram of a charge converter circuit connection according to the present utility model;
fig. 10 is a schematic diagram of a charge converter closed loop algorithm according to the present utility model.
The reference numerals in the figures are: 1. a basket; 2. a magnetic conductive plate; 3. a wireless charging receiving coil set; 4. a primary resonant rectifier circuit; 5. a solar panel; 6. a bottom protective cover; 7. a transmitting device housing; 8. a man-machine interaction screen; 9. a fixed bracket; 10. a transmitting coil set; 11. and a transmitting end control circuit.
Detailed Description
The utility model is further described below in connection with specific embodiments and the accompanying drawings.
Examples
The embodiment provides a wireless charging device of storage battery car sharing, as shown in fig. 1 to 6, including receiving arrangement, charging converter and emitter, emitter fixes the upper portion at the fixed bolster 9 that is used for fixed electric bicycle front wheel, and fixed bolster 9 is used for fixed electric bicycle's front wheel for the storage battery car is more firm when charging. The receiving means is mounted inside the basket 1. A bottom protective cover 6 for protecting the receiving means inside thereof is movably installed at the bottom of the basket 1.
The transmitting device comprises a transmitting device shell 7, a man-machine interaction screen 8, a transmitting coil set 10 and a transmitting end control circuit 11. The transmitting device housing 7 is installed at the upper portion of the fixing bracket 9, and the transmitting coil group 10 and the transmitting-end control circuit 11 are installed inside the transmitting device housing 7. A man-machine interaction screen 8 is mounted above the transmitter housing 7. A protective baffle is arranged on the periphery of the man-machine interaction screen 8 and is used for protecting the man-machine interaction screen 8.
The receiving device comprises a magnetic conduction plate 2, a wireless charging receiving coil set 3, a primary resonance rectifying circuit 4 and a solar panel 5. The wireless charging receiving coil set 3 is installed inside the vehicle basket 1, and the primary resonance rectifying circuit 4 is installed at the bottom of the vehicle basket 1. The magnetic conductive plate 2 is installed inside the basket 1 and above the wireless charging receiving coil set 3 for enhancing wireless communication between the wireless charging receiving coil set 3 and the transmitting coil set 10. The output end of the solar panel 5 is connected with an electric vehicle storage battery, and solar energy in the driving process or parked state is converted into electric energy by the solar panel 5 and transmitted to the electric vehicle storage battery to assist in charging.
The input end of the transmitting end control circuit 11 is connected with an external power supply, the output end of the transmitting end control circuit 11 is connected with the input end of the transmitting coil set 10, the output end of the transmitting coil set 10 is connected with one end of the wireless charging receiving coil set 3, the other end of the wireless charging receiving coil set 3 is connected with the input end of the primary resonance rectifying circuit 4, the output end of the primary resonance rectifying circuit 4 is connected with the input end of the charging converter, and the output end of the charging converter is connected with the electric vehicle storage battery. The man-machine interaction screen 8 is in bidirectional communication connection with the transmitting end control circuit 11, and the transmitting end control circuit 11 is in Bluetooth communication connection with a user mobile phone.
The working principle of the wireless charging device shared by the battery cars is as follows:
in the transmitting device, a power line is connected to a power grid, passes through a fixed support 9 and is connected to an input end of a transmitting end control circuit 11, and is firstly converted into voltages of 48V and 12V through a power conversion circuit on the transmitting end control circuit 11, wherein 48V is used as a power supply voltage input of a transmitting coil group 10, 12V obtained by reducing voltage is used as a power supply voltage input of a driving circuit, and the other 12V is converted into a voltage of 3.3V by an LDO (low dropout regulator) to be used as a power supply of the transmitting end control circuit 11.
The microcontroller used by the transmitting end control circuit 11 is STM32G431CBT6, and the man-machine interaction screen 8, ESP8266, 4G modules, and the driving circuit of the transmitting coil set 10 are connected to the transmitting end control circuit 11. In the idle state, the MCU on the transmitting end control circuit 11 is updated through the 4G module in a networking way, controls the man-machine interaction screen 8 to display the charging verification two-dimensional code, and controls the driving circuit of the transmitting coil set 10 to be in a stop state so as to save electric energy. After a user scans a two-dimension code, the user enters a charging verification platform, meanwhile, under the guidance of a mobile phone program, the Bluetooth is connected with an ESP8266 on a transmitting end control circuit 11, after the user starts charging by verification and clicking, the transmitting end control circuit 11 controls a man-machine interaction screen 8 to display a charging interface and display charging power and full conditions in real time, meanwhile, the transmitting end control circuit 11 controls a driving circuit of a transmitting coil group 10 to work and reads voltage and current acquired from the power circuit in real time so that the man-machine interaction screen 8 can display the voltage and current in real time and upload the voltage and current in real time through a 4G module carried on the transmitting end control circuit 11. When charging, the user can monitor the charging state of the electric bicycle in real time through the mobile phone program.
The receiving device is integrally combined with the bicycle basket 1, the wireless charging receiving coil set 3 receives wireless electric energy transmitted by the transmitting coil set 10, the obtained electric energy is transmitted to the primary resonance rectifying circuit 4, after LC resonance is carried out on the wireless electric energy received by the wireless charging receiving coil set 3, the wireless electric energy received by the wireless charging receiving coil set 3 is converted into direct current through voltage doubling rectification and is output, the direct current is transmitted to the charging converter, constant current, constant voltage step-down and power matching are carried out, and therefore the storage battery can be charged.
As shown in fig. 5, the primary resonant rectifying circuit is divided into two parts, (1) represents an LC resonant circuit, and (2) represents a voltage doubler rectifying circuit. The primary resonance rectifying circuit 4 includes a capacitor CC1, a capacitor CC2, a capacitor CC3, a capacitor CC4, a capacitor C1, a capacitor C2, a diode D2, and a diode D3; one end of each of the capacitor CC1, the capacitor CC2, the capacitor CC3 and the capacitor CC4 is connected with the output end II of the wireless charging receiving coil set 3, the other ends of the capacitor CC1, the capacitor CC2, the capacitor CC3 and the capacitor CC4 are connected with the cathode of the diode D2 and the anode of the diode D3, the cathode of the diode D3 is connected with one end of the capacitor C1 and the capacitor C2, and the anode of the diode D2, the other ends of the capacitor C1 and the capacitor C2 and the output end I of the wireless charging receiving coil set 3 are grounded; the two ends of the capacitor C2 form the output end of the primary resonance rectifying circuit 4.
The charging converter circuit is a synchronous rectification voltage-reducing circuit designed under the control of STM32G431CBT6, as shown in fig. 6, direct current transmitted by the primary resonance rectification circuit 4 is used as input of the charging converter circuit, the obtained direct current power supply is transmitted to the MCU through the voltage-reducing circuit to supply power, meanwhile, the direct current power supply is also used as input of the synchronous rectification voltage-reducing circuit, the MCU receives current and voltage data transmitted by the synchronous rectification voltage-reducing circuit in real time, the working power and the working state of the whole receiving system are analyzed in real time, P-I control of current and voltage shown in fig. 7 is carried out, the MCU compares the acquired target voltage of the output storage battery end with the maximum voltage which can be constantly supplied by the input end to obtain the minimum value, the minimum value is used as output voltage connected with the storage battery end, the acquired current and the target charging current are used as input of the P-I controller, the output of the P-I controller is used as the basis of PWM modulation, and therefore the output PWM carries out P-I control of voltage and current combination, and constant voltage control and input power are matched with the target power, and the overall charging efficiency is improved.
The whole control system is controlled by an MCU, and the transmitting device realizes control and communication by adopting STM32G431CBT6, 4G modules and an ESP8266 module. And the charging controller adopts STM32G431CBT6 as a controller to control the half-bridge synchronous rectification circuit to carry out voltage-reducing constant current control.
The examples of the present utility model are merely for describing the preferred embodiments of the present utility model, and are not intended to limit the spirit and scope of the present utility model, and those skilled in the art should make various changes and modifications to the technical solution of the present utility model without departing from the spirit of the present utility model.
Claims (6)
1. The utility model provides a wireless charging device of storage battery car sharing which characterized in that: the electric bicycle comprises a receiving device, a charging converter and a transmitting device, wherein the transmitting device is fixed at the upper part of a fixed bracket (9) for fixing the front wheel of the electric bicycle, and the receiving device is arranged inside a bicycle basket (1); the input end of the transmitting device is connected with an external power supply, the output end of the transmitting device is connected with the input end of the receiving device, and the output end of the receiving device is connected with an electric vehicle storage battery through a charging converter;
the transmitting device comprises a transmitting device shell (7), a transmitting coil group (10) and a transmitting end control circuit (11); the transmitting device shell (7) is arranged at the upper part of the fixed bracket (9); the transmitting coil group (10) and the transmitting end control circuit (11) are arranged inside the transmitting device shell (7); the input end of the transmitting end control circuit (11) is connected with an external power supply, the output end of the transmitting end control circuit is connected with the input end of the transmitting coil set (10), and the output end of the transmitting coil set (10) is connected with the receiving device;
the receiving device comprises a wireless charging receiving coil set (3) and a primary resonance rectifying circuit (4), wherein the wireless charging receiving coil set (3) is arranged in the bicycle basket (1), and the primary resonance rectifying circuit (4) is arranged at the bottom of the bicycle basket (1); one end of the wireless charging receiving coil set (3) is connected with the output end of the transmitting coil set (10), the other end of the wireless charging receiving coil set (3) is connected with the input end of the primary resonance rectifying circuit (4), and the output end of the primary resonance rectifying circuit (4) is connected with the input end of the charging converter;
the charging converter circuit is a synchronous rectification voltage-reducing circuit designed under the control of STM32G431CBT6, direct current transmitted by the primary resonance rectification circuit (4) is used as the input of the charging converter circuit, 3.3V is obtained by the obtained direct current power supply through the voltage-reducing circuit and is transmitted to the MCU for supplying power, meanwhile, the direct current power supply is also used as the input of the synchronous rectification voltage-reducing circuit, the MCU receives current and voltage data transmitted by the synchronous rectification voltage-reducing circuit in real time, the working power and the working state of the whole receiving system are analyzed in real time, P-I control of current and voltage is carried out, the MCU compares the acquired target voltage of the output storage battery end with the maximum voltage which can be constantly provided by the input end to obtain the minimum value, the minimum value is used as the output voltage connected with the storage battery end, the acquired current and the target charging current are used as the input of the P-I controller, the output of the P-I controller is used as the basis of PWM modulation, and therefore the output PWM carries out P-I control of voltage and current combination, and constant current control and constant voltage control and the input power are matched with the target power;
the primary resonance rectifying circuit (4) comprises a capacitor CC1, a capacitor CC2, a capacitor CC3, a capacitor CC4, a capacitor C1, a capacitor C2, a diode D2 and a diode D3; one end of each of the capacitor CC1, the capacitor CC2, the capacitor CC3 and the capacitor CC4 is connected with the output end II of the wireless charging receiving coil set (3), the other ends of the capacitor CC1, the capacitor CC2, the capacitor CC3 and the capacitor CC4 are connected with the cathode of the diode D2 and the anode of the diode D3, the cathode of the diode D3 is connected with one end of the capacitor C1 and the capacitor C2, and the anode of the diode D2, the other ends of the capacitor C1 and the capacitor C2 and the output end I of the wireless charging receiving coil set (3) are grounded; the two ends of the capacitor C2 form the output end of the primary resonance rectifying circuit (4).
2. The battery car sharing wireless charging device according to claim 1, wherein: the transmitting device further comprises a man-machine interaction screen (8), and the man-machine interaction screen (8) is arranged above the transmitting device shell (7); the man-machine interaction screen (8) is in bidirectional communication connection with the transmitting end control circuit (11), and the transmitting end control circuit (11) is in Bluetooth communication connection with a user mobile phone.
3. The battery car sharing wireless charging device according to claim 1, wherein: the receiving device further comprises a magnetic conduction plate (2), wherein the magnetic conduction plate (2) is arranged inside the bicycle basket (1) and is positioned above the wireless charging receiving coil set (3).
4. The battery car sharing wireless charging device according to claim 3, wherein: the receiving device further comprises a solar panel (5), and the output end of the solar panel (5) is connected with the electric vehicle storage battery.
5. The battery car sharing wireless charging device according to any one of claims 1-4, wherein: a bottom protection cover (6) is movably arranged at the bottom of the bicycle basket (1).
6. The battery car sharing wireless charging device according to claim 5, wherein: and a protective baffle is arranged on the periphery of the man-machine interaction screen (8).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202111681895.6A CN114394004B (en) | 2021-12-31 | 2021-12-31 | Wireless charging device is shared to storage battery car |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202111681895.6A CN114394004B (en) | 2021-12-31 | 2021-12-31 | Wireless charging device is shared to storage battery car |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN114394004A CN114394004A (en) | 2022-04-26 |
| CN114394004B true CN114394004B (en) | 2023-08-22 |
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| CN202111681895.6A Active CN114394004B (en) | 2021-12-31 | 2021-12-31 | Wireless charging device is shared to storage battery car |
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