CN111823892A - Automatic switch device for wireless charging coil of electric automobile and control method - Google Patents
Automatic switch device for wireless charging coil of electric automobile and control method Download PDFInfo
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- CN111823892A CN111823892A CN202010707284.3A CN202010707284A CN111823892A CN 111823892 A CN111823892 A CN 111823892A CN 202010707284 A CN202010707284 A CN 202010707284A CN 111823892 A CN111823892 A CN 111823892A
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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
- B60L53/60—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
- B60L53/60—Monitoring or controlling charging stations
- B60L53/62—Monitoring or controlling charging stations in response to charging parameters, e.g. current, voltage or electrical charge
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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
- B60L53/65—Monitoring or controlling charging stations involving identification of vehicles or their battery types
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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
- B60L53/66—Data transfer between charging stations and vehicles
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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
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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
- H02J50/80—Circuit arrangements or systems for wireless supply or distribution of electric power involving the exchange of data, concerning supply or distribution of electric power, between transmitting devices and receiving devices
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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
- H02J7/0029—Circuit arrangements for charging or depolarising batteries or for supplying loads from batteries with safety or protection devices or circuits
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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
- H02J7/0029—Circuit arrangements for charging or depolarising batteries or for supplying loads from batteries with safety or protection devices or circuits
- H02J7/00306—Overdischarge protection
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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
- H02J7/0029—Circuit arrangements for charging or depolarising batteries or for supplying loads from batteries with safety or protection devices or circuits
- H02J7/0031—Circuit arrangements for charging or depolarising batteries or for supplying loads from batteries with safety or protection devices or circuits using battery or load disconnect circuits
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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
- H02J7/0029—Circuit arrangements for charging or depolarising batteries or for supplying loads from batteries with safety or protection devices or circuits
- H02J7/0031—Circuit arrangements for charging or depolarising batteries or for supplying loads from batteries with safety or protection devices or circuits using battery or load disconnect circuits
- H02J7/0032—Circuit arrangements for charging or depolarising batteries or for supplying loads from batteries with safety or protection devices or circuits using battery or load disconnect circuits disconnection of loads if battery is not under charge, e.g. in vehicle if engine is not running
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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
Abstract
The invention discloses an automatic switching device and a control method for a wireless charging coil of an electric vehicle, wherein the parking information of a vehicle is acquired through a wireless sensor arranged on a ground parking space, and the electric quantity information of the vehicle on the ground parking space is acquired at the same time; when the wireless sensor does not detect that the vehicle is parked, the switch circuit is powered off, and the electric quantity detection wireless communication module is prevented from mistakenly identifying that the electric quantity of the vehicle is smaller than a set saturation threshold value to enable the switch circuit to be started to work when the vehicle is not parked in a standard state, so that the working efficiency of the power supply coil is improved, and meanwhile, the charging safety is improved; the vehicle battery protection method and the vehicle battery protection device can prevent the vehicle from being parked for a long time, and when the natural discharging point of the vehicle battery is smaller than the set saturation threshold value, the vehicle battery is enabled to be charged repeatedly, then the battery is damaged, and the safety of the vehicle charging process is ensured.
Description
Technical Field
The invention belongs to the field of wireless charging of electric automobiles, and particularly relates to an automatic switching device and a control method for a wireless charging coil of an electric automobile.
Background
In the magnetic coupling resonance type Wireless charging technology (Wireless Power Transfer), a primary coil buried under the ground and a secondary coil fixed on an automobile chassis generate an alternating magnetic field in the air, so that energy is transferred from the primary coil to the secondary coil, and then the battery is charged.
With the vigorous popularization of the country and the improvement of the public environmental awareness, the electric automobile is gradually purchased by more and more consumers due to the advantages of low pollution and high energy efficiency. At present, batteries are generally adopted as energy storage units in electric automobiles in the market. If the traditional wired charging mode is adopted to charge the battery, a plurality of problems can be faced, such as easy aging of the cable, inflexible charging mode and low safety. The wireless charging technology can solve the problems well, and when the automobile is stopped at a fixed position, the electric automobile can be charged. And the Dynamic Wireless power transfer technology (Dynamic Wireless power transfer) can even realize the running and charging of the automobile, thereby being beneficial to solving the dilemma of long charging time and short endurance mileage of the electric automobile. However, if no matter whether the parking lot has a vehicle parked, the primary side power supply coil is always powered on, energy loss is inevitably caused, safety problems are easily caused, and the automatic development prospect of the electric automobile is not facilitated.
Disclosure of Invention
The invention aims to provide an automatic switch device and a control method for a wireless charging coil of an electric automobile, so as to overcome the defects of the prior art.
In order to achieve the purpose, the invention adopts the following technical scheme:
an automatic switch device for a wireless charging coil of an electric automobile comprises a pressure sensor, a logic control unit, a controller, a switch circuit and a power supply coil;
pressure sensor sets up in parking stall vehicle tyre position department, and power supply coil sets up in parking stall vehicle charging position, and pressure sensor connects in the logic control unit, and the logic control unit connects in the controller, and the controller is connected in switch circuit, and switch circuit connects in power supply coil.
Furthermore, two pressure sensors are respectively arranged at two diagonal tire positions of the vehicle on the parking space, and the two pressure sensors are connected in parallel with the logic control unit.
Furthermore, the two pressure sensors are respectively connected with a wireless transmitting module, and the wireless transmitting module and the logic control unit are in wireless transmission.
Furthermore, a pressing plate is arranged at the upper end of the pressure sensor, the lower end face of the pressing plate is in contact with the upper end face of the pressure sensor, the pressure sensor is buried in the ground, and the upper end face of the pressing plate is flush with the ground.
Furthermore, the pressing plate is of a steel plate structure.
Further, the switch circuit is further connected with an electric quantity detection wireless communication module, the electric quantity detection wireless communication module is connected to the controller, the vehicle-mounted electric quantity detection wireless sending module is connected to the vehicle-mounted electric quantity detection module, the vehicle-mounted electric quantity detection wireless sending module and the vehicle-mounted electric quantity detection module are both arranged on the vehicle, the vehicle-mounted electric quantity detection module is used for obtaining vehicle electric quantity information, the obtained vehicle electric quantity information is sent to the electric quantity detection wireless communication module through the vehicle-mounted electric quantity detection wireless sending module, and the electric quantity detection wireless communication module receives the vehicle electric quantity information and transmits the vehicle electric quantity information to the controller.
An automatic switch control method for a wireless charging coil of an electric automobile comprises the following steps: the method comprises the steps that vehicle parking information is obtained through a wireless sensor arranged on a ground parking space, meanwhile, the electric quantity information of a vehicle on the ground parking space is obtained, and when the wireless sensor detects that the vehicle is parked and the electric quantity of the vehicle on the ground parking space is smaller than a charging saturation threshold value, a switch circuit is started to enable a power supply coil to be electrified to work; when the wireless sensor does not detect that the vehicle is parked, the switch circuit is powered off.
Further, the vehicle parking information is obtained through two pressure sensors arranged at the diagonal tire parking positions of the vehicle.
Compared with the prior art, the invention has the following beneficial technical effects:
the invention relates to an automatic switch device for a wireless charging coil of an electric automobile, which comprises a pressure sensor, a logic control unit, a controller, a switch circuit and a power supply coil, wherein the pressure sensor is connected with the logic control unit; pressure sensor sets up in parking stall vehicle tyre position department, power supply coil sets up in parking stall vehicle charging position, pressure sensor connects in the logic control unit, the logic control unit connects in the controller, the controller is connected in switch circuit, switch circuit connects in power supply coil, through set up pressure sensor in parking stall vehicle tyre position department, as the on-off switch that the vehicle parked, the wasting of resources that power supply coil switched on always and caused when not having the vehicle to park has been avoided, the security of charging of power supply coil has been improved simultaneously, this application utilizes pressure sensor's setting, wireless charging power supply coil's control circuit has been simplified, moreover, the steam generator is simple in structure, safety and reliability.
Furthermore, two pressure sensors are respectively arranged at two diagonal tire positions of the vehicle on the parking space and connected in parallel with the logic control unit, and the two pressure sensors are used for acquiring vehicle parking information, so that the vehicle parking positions are ensured, the working efficiency of the power supply coil is optimal, and the accuracy of the pressure sensors for acquiring the vehicle information at the same time can be ensured.
Furthermore, two pressure sensors are respectively connected with a wireless transmitting module, the wireless transmitting module and the logic control unit are in wireless transmission, and the risk of communication faults caused by line aging is avoided by adopting wireless transmission.
Furthermore, the upper end of the pressure sensor is provided with a pressing plate, the lower end face of the pressing plate is in contact with the upper end face of the pressure sensor, the pressure sensor is buried in the ground, and the upper end face of the pressing plate is flush with the ground, so that the service life of the pressure sensor is prolonged.
Further, the switch circuit is further connected with an electric quantity detection wireless communication module, the electric quantity detection wireless communication module is connected to the controller, the vehicle-mounted electric quantity detection wireless transmission module is connected to the vehicle-mounted electric quantity detection module, the vehicle-mounted electric quantity detection wireless transmission module and the vehicle-mounted electric quantity detection module are arranged on the vehicle, the vehicle-mounted electric quantity detection module is used for acquiring vehicle electric quantity information, the acquired vehicle electric quantity information is transmitted to the electric quantity detection wireless communication module through the vehicle-mounted electric quantity detection wireless transmission module, the vehicle electric quantity information is received by the electric quantity detection wireless communication module and is transmitted to the controller, the vehicle information is acquired by the electric quantity detection wireless communication module, automatic power-off after vehicle charging is completed can be ensured, the overcharge risk caused by the fact that the power supply coil is powered.
A wireless charging coil automatic switch control method of an electric vehicle is characterized in that vehicle parking information is obtained through a wireless sensor arranged on a ground parking space, electric quantity information of a vehicle on the ground parking space is obtained at the same time, and when the wireless sensor detects that the vehicle is parked and the electric quantity of the vehicle on the ground parking space is smaller than a charging saturation threshold, a switch circuit is started to enable a power supply coil to be electrified to work; when the wireless sensor does not detect that the vehicle is parked, the switch circuit is powered off, and the electric quantity detection wireless communication module is prevented from mistakenly identifying that the electric quantity of the vehicle is smaller than a set saturation threshold value to enable the switch circuit to be started to work when the vehicle is not parked in a standard state, so that the working efficiency of the power supply coil is improved, and meanwhile, the charging safety is improved; this application utilizes power consumption to detect wireless communication module and acquires vehicle electric quantity information in real time, and when the completion of charging, the switch circuit is closed to the accessible controller, closes electric quantity simultaneously and detects wireless communication module and gets electric, prevents that the vehicle from parking for a long time, and when vehicle battery nature point of putting was less than the settlement saturation threshold value, makes vehicle battery charge repeatedly and then damages the battery, has ensured vehicle charging process's security.
Drawings
Fig. 1 is a schematic structural diagram in an embodiment of the present invention.
Fig. 2 is a schematic diagram of an arrangement structure of a pressure sensor in the embodiment of the invention.
Wherein, 1, a pressure sensor; 2. a wireless transmitting module; 3. a logic control unit; 4. a controller; 5. a switching circuit; 6. a power supply coil; 7. pressing a plate; 8. the electric quantity detection wireless communication module; 9. the vehicle-mounted electric quantity detection wireless sending module; 10. and a vehicle-mounted electric quantity detection module.
Detailed Description
The invention is described in further detail below with reference to the accompanying drawings:
as shown in fig. 1, an automatic switching device for a wireless charging coil of an electric vehicle comprises a pressure sensor 1, a logic control unit 3, a controller 4, a switching circuit 5 and a power supply coil 6;
Specifically, the pressure sensor 1 and the power supply coil 6 are arranged at positions, so that when the vehicle is in an optimal charging position, a vehicle tire is positioned at the upper end of the pressure sensor 1;
the parking space vehicle pressure sensor is provided with two pressure sensors 1, wherein the two pressure sensors 1 are respectively arranged at two diagonal tire positions of a parking space vehicle; namely, the two pressure sensors 1 are arranged at positions, so that after the vehicle is parked, two diagonal tires of the vehicle are respectively positioned on one pressure sensor, and the two pressure sensors 1 can be simultaneously contacted with the tires of the vehicle; the two pressure sensors 1 are both connected to a logic control unit;
the two pressure sensors 1 are respectively connected with a wireless transmitting module 2, and the wireless transmitting module 2 and the logic control unit 3 are in wireless transmission.
Specifically, as shown in fig. 2, pressure sensor 1 upper end is equipped with clamp plate 7, pressure sensor 1 buries underground in ground, subaerial recess of having seted up, pressure sensor 1 sets up in the recess, clamp plate 7 covers on pressure sensor 1, the recess upper end is equipped with spacing platform, clamp plate 7 presses with spacing platform surface contact when extreme position, prevent that the vehicle from overweight from causing the damage to pressure sensor 1, pressure sensor 1 acquires the extreme pressure value that the pressure value is less than pressure sensor when clamp plate 7 presses to extreme position, pressure sensor's life has been improved, clamp plate 7 adopts the steel sheet structure, high strength, non-deformable, form effectual protection to pressure sensor 1.
The switch circuit 5 is further connected with an electric quantity detection wireless communication module 8, the electric quantity detection wireless communication module 8 is connected to the controller 4, the electric quantity detection wireless communication module 8 is used for being in wireless communication with a vehicle-mounted electric quantity detection wireless transmission module 9, the vehicle-mounted electric quantity detection wireless transmission module 9 is connected to a vehicle-mounted electric quantity detection module 10, the vehicle-mounted electric quantity detection wireless transmission module 9 and the vehicle-mounted electric quantity detection module 10 are both arranged on a vehicle, the vehicle-mounted electric quantity detection module 10 is used for acquiring vehicle electric quantity information, the acquired vehicle electric quantity information is transmitted to the electric quantity detection wireless communication module 8 through the vehicle-mounted electric quantity detection wireless transmission module 9, and the electric quantity detection wireless communication module 8 receives the vehicle electric quantity information and.
An automatic switch control method for a wireless charging coil of an electric automobile comprises the following steps: the method comprises the steps that vehicle parking information is obtained through a wireless sensor arranged on a ground parking space, meanwhile, the electric quantity information of a vehicle on the ground parking space is obtained, and when the wireless sensor detects that the vehicle is parked and the electric quantity of the vehicle on the ground parking space is smaller than a charging saturation threshold value, a switch circuit is started to enable a power supply coil to be electrified to work; when the wireless sensor does not detect that the vehicle is parked, the switch circuit is powered off.
Specifically, when the automobile stops at a designated position of the parking lot, the tire of the automobile is positioned on a pressure plate at the upper end of a pressure sensor, the gravity of the automobile transmits the pressure to the pressure sensor under the ground through the pressure plate 7 positioned under the wheel, the pressure sensor senses the pressure at the position corresponding to the wheel, and after the pressure reaches a preset minimum threshold value, the two pressure sensors respectively send signals through wireless transmitters connected with the two pressure sensors; the two pressure sensors are connected in parallel, and do not interfere with the control of signals mutually;
the device adopts two pressure sensors to prevent the single pressure sensor from being started by the single gravity, when the logic control unit receives a signal transmitted by the wireless transmitter, the logic control unit starts to carry out AND gate logic calculation, if only the pressure signal of one wireless transmitter 1 is received, the logic control unit considers that other objects are touched by mistake and can not be identified as vehicle parking, and at the moment, the signal is stopped at the logic control unit and can not be transmitted to the controller; similarly, when no signal is transmitted from both wireless transmitters, the logic control unit will not transmit the signal. When the two wireless transmitters transmit signals, the logic control unit considers that the automobile stops at a specified position, transmits the signals to the controller, controls the primary side coil power-on circuit to be opened, and starts to wirelessly charge the electric automobile.
The method includes the steps that two pressure sensors are used for obtaining vehicle information and used as trigger switch control signals for starting a controller, when a vehicle is parked, the controller is started through a switch circuit to enable a power supply coil to be electrified, meanwhile, an electric quantity detection wireless communication module is electrified to detect electric quantity information of the parked vehicle, when the electric quantity is smaller than a saturation set threshold value, the controller does not act, the switch circuit is kept started, when the electric quantity of the parked vehicle is larger than or equal to the set saturation threshold value, the controller controls the switch circuit to be disconnected, meanwhile, the electric quantity detection wireless communication module stops working, and one-time charging is completed; when recharging, the vehicle needs to be moved, the pressure sensor is started again, and the controller is triggered to be started to enable the switch circuit to be started; the method ensures that the electric quantity detection wireless communication module is only triggered to be started once when the vehicle is parked once, and prevents the electric quantity detection wireless communication module from mistakenly identifying that the electric quantity of the vehicle is smaller than a set saturation threshold value to start a switch circuit to work when the vehicle is parked irregularly, so that the working efficiency of the power supply coil is improved, and meanwhile, the charging safety is improved; this application utilizes power detection wireless communication module to acquire vehicle electric quantity information in real time, when the completion of charging, switch circuit is closed to the accessible controller, it gets electric to close power detection wireless communication module simultaneously, prevent that the vehicle from parking for a long time, when vehicle battery nature is put a little and is less than and set for the saturation threshold, make vehicle battery charge repeatedly and then damage the battery, this application utilizes the controller, when the vehicle parks, according to power detection wireless communication module 8's priority level is higher than the signal that comes from the logic control unit, the security of vehicle charging process has been ensured.
Meanwhile, the vehicle-mounted electric quantity detection module 10 transmits the electric quantity condition of the automobile to the ground electric quantity detection wireless communication module 8 in real time through the vehicle-mounted electric quantity detection wireless transmission module 9, when the electric quantity of the battery of the electric automobile is fully charged, the vehicle-mounted electric quantity detection wireless transmission module 9 transmits a signal to the electric quantity detection wireless communication module 8, and the electric quantity detection wireless communication module 8 further transmits a feedback signal to the controller, so that the switching circuit is controlled to be disconnected, and the automobile is stopped being charged; the feedback signal of the electric quantity detection wireless communication module 8 has higher priority than the signal from the logic control unit.
In the above embodiment, the pressure plate 7 is flush with the ground, so that the pressure transmitted to the pressure sensor can be reduced, and the primary side power supply coil can be prevented from being opened by mistake when other heavy objects are pressed on the steel plate. Of course, in actual work, due to the fact that different vehicle wheelbases are different, workers can determine different specifications of the steel plates according to actual conditions. To guide the driver to stop the automobile at a designated position, position marks may be made in the corresponding steel plate areas.
Claims (8)
1. An automatic switch device for a wireless charging coil of an electric automobile is characterized by comprising a pressure sensor (1), a logic control unit (3), a controller (4), a switch circuit (5) and a power supply coil (6);
pressure sensor (1) sets up in parking stall vehicle tyre position department, and power supply coil (6) set up in parking stall vehicle charging position, and pressure sensor (1) is connected in logic control unit (3), and logic control unit (3) are connected in controller (4), and controller (4) are connected in switch circuit (5), and switch circuit (5) are connected in power supply coil (6).
2. The automatic switch device for the wireless charging coil of the electric automobile according to claim 1, characterized in that, two pressure sensors (1) are respectively arranged at two diagonal tire positions of the parking space vehicle, and the two pressure sensors (1) are connected in parallel with the logic control unit (3).
3. The automatic switch device for the wireless charging coil of the electric automobile according to claim 2, characterized in that two pressure sensors (1) are respectively connected with a wireless transmitting module (2), and the wireless transmitting module (2) and the logic control unit (3) are wirelessly transmitted.
4. The automatic switch device for the wireless charging coil of the electric automobile according to claim 1, characterized in that a pressure plate (7) is arranged at the upper end of the pressure sensor (1), the lower end surface of the pressure plate (7) is in contact with the upper end surface of the pressure sensor (1), the pressure sensor (1) is buried in the ground, and the upper end surface of the pressure plate (7) is flush with the ground.
5. The automatic switch device for the wireless charging coil of the electric automobile according to claim 4, characterized in that the pressure plate (7) is of a steel plate structure.
6. The automatic switch device for the wireless charging coil of the electric automobile according to claim 1 or 2, wherein the switch circuit (5) is further connected with a power detection wireless communication module (8), the power detection wireless communication module (8) is connected to the controller (4), the vehicle-mounted power detection wireless transmission module (9) is connected to the vehicle-mounted power detection module (10), the vehicle-mounted power detection wireless transmission module (9) and the vehicle-mounted power detection module (10) are both arranged on the vehicle, the vehicle-mounted power detection module (10) is used for acquiring vehicle power information, the acquired vehicle power information is transmitted to the power detection wireless communication module (8) through the vehicle-mounted power detection wireless transmission module (9), and the power detection wireless communication module (8) receives the vehicle power information and transmits the vehicle power information to the controller (4).
7. The electric vehicle wireless charging coil automatic switch control method for the electric vehicle wireless charging coil automatic switch device according to claim 6, characterized by comprising the following steps: the method comprises the steps that vehicle parking information is obtained through a wireless sensor arranged on a ground parking space, meanwhile, the electric quantity information of a vehicle on the ground parking space is obtained, and when the wireless sensor detects that the vehicle is parked and the electric quantity of the vehicle on the ground parking space is smaller than a charging saturation threshold value, a switch circuit is started to enable a power supply coil to be electrified to work; when the wireless sensor does not detect that the vehicle is parked, the switch circuit is powered off.
8. The automatic switch control method of the wireless charging coil of the electric vehicle as claimed in claim 7, wherein the parking information of the vehicle is obtained by two pressure sensors disposed at diagonal tire parking places of the vehicle.
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| CN202010707284.3A CN111823892A (en) | 2020-07-21 | 2020-07-21 | Automatic switch device for wireless charging coil of electric automobile and control method |
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