CN115107539A - System and method for optimizing position of wireless charging coil of automobile - Google Patents
System and method for optimizing position of wireless charging coil of automobile Download PDFInfo
- Publication number
- CN115107539A CN115107539A CN202111629042.8A CN202111629042A CN115107539A CN 115107539 A CN115107539 A CN 115107539A CN 202111629042 A CN202111629042 A CN 202111629042A CN 115107539 A CN115107539 A CN 115107539A
- Authority
- CN
- China
- Prior art keywords
- charging
- module
- automobile
- ground
- receiving
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Pending
Links
Images
Classifications
-
- 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
-
- 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
-
- 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
- B60L53/35—Means for automatic or assisted adjustment of the relative position of charging devices and vehicles
- B60L53/38—Means for automatic or assisted adjustment of the relative position of charging devices and vehicles specially adapted for charging by inductive energy transfer
-
- 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
- B60L53/50—Charging stations characterised by energy-storage or power-generation means
- B60L53/51—Photovoltaic means
-
- 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
- B60L53/50—Charging stations characterised by energy-storage or power-generation means
- B60L53/53—Batteries
-
- 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
-
- 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)
- Electric Propulsion And Braking For Vehicles (AREA)
- Charge And Discharge Circuits For Batteries Or The Like (AREA)
Abstract
The invention relates to a system and a method for optimizing the position of a wireless charging coil of an automobile, wherein the system comprises a ground transmitting device and an automobile receiving device, and the automobile receiving device comprises: the receiving module is used for receiving the charging signal of the ground transmitting device and charging the automobile; the detection module is used for detecting the relative height and horizontal distance between the ground transmitting device and the receiving module and detecting related data of the receiving module in real time so as to calculate the charging efficiency; the control processing module is used for collecting the charging efficiency of each charging and sending an execution instruction to the execution module; and the execution module is used for adjusting the height and the horizontal direction of the receiving module and placing the receiving module in an interval with the highest charging efficiency relative to the ground transmitting device. The invention has compact structure, and can effectively avoid the problem of reduction of wireless charging efficiency caused by the distance between the receiving module and the ground transmitting device and the deviation of the automobile.
Description
Technical Field
The invention relates to the technical field of automobile wireless charging, in particular to a system and a method for optimizing the position of an automobile wireless charging coil.
Background
Energy conservation, environmental protection and safe trip are the permanent theme of the development of the automobile industry. As electric vehicles gradually enter people's lives, how to charge the batteries quickly and safely becomes a technical problem. For charging the electric automobile, a conduction charging mode is mostly adopted at present, namely, a charging cable is used for connecting the charger and the electric automobile. However, this operation is cumbersome, time-consuming and labor-consuming, and may easily cause electrical leakage if the cable is aged, rains and snows, forgets to remove the cable after charging, and inadvertently pulls the connecting cable. As an emerging technology, the wireless charging technology is also mainly applied to charging of small-power devices such as mobile phones, computers and walkmans, and is a brand-new concept in the field of electric vehicles.
The electric automobile wireless charging technology transmits electric energy to a vehicle receiving end electric energy picking mechanism which runs in a certain range on the ground in a high-frequency alternating magnetic field mode through a power supply guide rail buried under the ground, and then the vehicle-mounted energy storage equipment is powered, so that the electric automobile can carry a smaller number of battery packs, the endurance mileage of the electric automobile is prolonged, and meanwhile, electric energy supply becomes safer and more convenient. When the power electronic technology is continuously developed, the energy supply mode of the electric automobile is diversified, the battery replacement and charging modes appear, the charging mode also comprises a plurality of modes such as contact charging and non-contact wireless charging, the flexibility of the charging time and the charging place is enhanced, and the practicability of the electric automobile is greatly improved. The wireless charging technology for the electric automobile is a trend developed in recent years, has the advantages of safety and convenience, can greatly reduce the battery capacity of the electric automobile, reduces the weight of the automobile body, reduces the initial purchase cost of the electric automobile, is not limited by the high cost factor of a high-capacity battery, and can enable the market scale of the electric automobile to be wider. At present, the conventional device and method for wirelessly charging an electric vehicle mainly perform wireless power transmission by methods such as electromagnetic induction, magnetic resonance, microwave and the like, and improve the charging stability and reliability and the power transmission efficiency by changing the arrangement and control method of a transmitting end and a receiving end.
For a fixed-point ground power supply device, a receiving end coil inevitably has a situation of non-corresponding position in the automobile parking process, so that the receiving end coil and a transmitting end coil are horizontally deviated due to uncertain factors such as road environment, man-made driving and the like. In addition, factors such as automobile load capacity, tire pressure and road conditions affect the ground clearance of the chassis, so that the vertical clearance of the coil at the transmitting end and the receiving end is changed. When the coil at the transmitting and receiving end deviates, the self inductance and mutual inductance of the coil also change, thereby affecting the output power and transmission efficiency of the wireless charging system.
Disclosure of Invention
In order to solve the problems in the prior art, an object of the present invention is to provide a system for optimizing the position of a wireless charging coil of an automobile, which has a compact structure and can effectively avoid the problem of the decrease of the wireless charging efficiency caused by the distance between a receiving module and a ground transmitting device and the deviation of the automobile. The invention also aims to provide a position optimization method for the wireless charging coil of the automobile, which can adjust the position of the receiving module when the verticality and the horizontal position of the automobile change until the position with the most efficient charging efficiency is adjusted, and if an abnormal condition occurs, the charging is stopped and the charging module is withdrawn.
The invention discloses a position optimization system of a wireless charging coil of an automobile, which comprises a ground transmitting device fixedly arranged on the ground and an automobile receiving device wirelessly connected with the ground transmitting device, wherein the automobile receiving device comprises:
the receiving module is used for receiving the charging signal of the ground transmitting device and charging the automobile;
the detection module is used for detecting the relative height and horizontal distance between the ground transmitting device and the receiving module when the charging is started after the automobile is stopped stably, detecting related data of the receiving module in real time in the automobile charging process, obtaining the time required by charging and the charging progress, and calculating the charging efficiency;
the control processing module is used for collecting the charging efficiency of each time of automobile charging and sending an execution instruction to the execution module according to the relative height and horizontal distance between the ground transmitting device and the receiving module;
the execution module is used for adjusting the height and the horizontal direction of the receiving module and placing the receiving module in an interval with the highest charging efficiency relative to the ground transmitting device;
the receiving module, the detecting module and the executing module are respectively in signal connection with the control processing module.
In one embodiment, the receiving module comprises a DC/DC converter, a first rectifier and a receiving coil which are sequentially connected with a vehicle battery, and the receiving coil is used for being wirelessly connected with the ground transmitting device.
In one embodiment, the detection module comprises detection coils positioned at four corners of the automobile, the four detection coils are connected with a voltage detector through a second rectifier, and the detection coils are used for being wirelessly connected with the ground emission device so as to generate four voltages with different sizes and judge the deviation condition of the automobile body.
In one embodiment, the detection module further comprises a camera, a radar and a signal feedback unit, which are connected with each other, wherein the camera and the radar are both used for collecting data of the current speed and the position of the automobile relative to the ground transmitting device, and the signal feedback unit feeds the data back to the control processing module.
In one embodiment, the execution module comprises a guide rail and a translation motor, wherein the translation motor is used for enabling the receiving coil to move on a horizontal plane along the guide rail; and lifting motors are further arranged at four corners of the guide rails and are used for adjusting the horizontal height of the guide rails.
In one embodiment, the ground transmitting device comprises an aluminum back plate, a high-frequency inverter, a transmitting coil, a tray and a cover plate which are sequentially arranged on the ground, wherein the high-frequency inverter is electrically connected with the transmitting coil, and is also connected with a mains supply through a third rectifier.
In one embodiment, a resonance compensation network is arranged between the first rectifier and the receiving coil, between the detection coil and the second rectifier, and between the high-frequency inverter and the transmitting coil.
In one embodiment, the solar energy collecting device further comprises a solar energy collecting unit, a kinetic energy collecting unit and a storage battery, wherein the solar energy collecting unit and the kinetic energy collecting unit are respectively connected with the high-frequency inverter through the storage battery; the kinetic energy collecting unit comprises movable plates arranged on the ground and located on the periphery of the ground emitting device, and piezoelectric materials are laid at the bottoms of the movable plates.
In one embodiment, the high frequency inverter is made of ferrite cores and the transmitting coil is made of litz wire.
A position optimization method for a wireless charging coil of an automobile is applied to the position optimization system for the wireless charging coil of the automobile, and comprises the following steps:
s1, the automobile stops near the ground emission device according to the position indication, and the wireless charging function is started;
s2, the detection module detects the relative height and horizontal distance data of the ground emitting device and the receiving module and feeds the data back to the control processing module;
s3, the control processing module calculates the position of the highest charging efficiency according to the data fed back by the detection module and sends an execution instruction to the execution module;
s4, the execution module adjusts the position of the receiving module according to the execution instruction;
s5, the detection module detects the current position information of the receiving module relative to the ground transmitting device, detects the data of power, frequency, current and voltage of the receiving module in real time to obtain the time required by charging and the charging progress, calculates the charging efficiency, and integrates the position information and the charging efficiency into charging information after the charging is finished and feeds the charging information back to the control processing module;
s6, the control processing module establishes a database to collect charging information of each wireless charging, and uses the database to calculate the position of the highest charging efficiency as reference data in the step S3;
and S7, stopping the wireless charging function when the detection module detects that the charging is abnormal or full, and simultaneously reminding a driver in a display system of the automobile, wherein the execution module controls the receiving module to be retracted to the original position.
Compared with the prior art, the technical scheme of the invention has the beneficial effects that:
1. the invention has compact structure and can effectively avoid the problem of reduction of wireless charging efficiency caused by the distance between the receiving module and the ground transmitting device and the deviation of the automobile. When a vehicle with wireless charging stops to a ground transmitting device, a wireless charging switch is turned on, a detection module judges whether working conditions are met, when the working conditions are met, a receiving module starts to work, a charging indicator lamp in the vehicle is on, the vehicle deviates due to changes of verticality and horizontal position, an execution module can be commanded to work through an accessible control module according to stored data, the position of the receiving module is adjusted until the position with the most efficient charging efficiency is adjusted, if abnormal conditions are met, charging is stopped, and meanwhile the charging module is withdrawn.
2. The invention can enable more electric automobiles with wireless charging functions to have higher ground clearance and meet the requirements of people with requirements on the ground clearance. In the existing stage, a simple, convenient, feasible and effective method is provided for solving the problem of anxiety of endurance mileage for the vehicle enterprise, the electric vehicle with the function can carry a battery with smaller capacity, and the research and development cost of the vehicle enterprise on the battery, the purchase cost of a user and the use cost are reduced. Meanwhile, the wireless charging also saves precious charging time for users, brings greater freedom of selection for the maintenance of charging connecting wires and the like, and relieves a series of influences caused by the shortage of charging piles.
Drawings
FIG. 1 is a schematic structural diagram of a wireless charging coil position optimizing system for a vehicle according to the present invention;
fig. 2 is a schematic diagram of the connection between the car receiver and the ground transmitter of the present invention.
Description of reference numerals: the system comprises a ground transmitting device 1, a high-frequency inverter 11, a transmitting coil 12, a third rectifier 13, a vehicle receiving device 2, a receiving module 3, a DC/DC converter 31, a first rectifier 32, a receiving coil 33, a detection module 4, a detection coil 41, a second rectifier 42, a voltage detector 43, a camera 44, a radar 45, a signal feedback unit 46, a control processing module 5, an execution module 6, a guide rail 61, a translation motor 62, a lifting motor 63, a solar energy collecting unit 7, a kinetic energy collecting unit 8 and a storage battery 9.
Detailed Description
The drawings are for illustrative purposes only and are not to be construed as limiting the patent; for the purpose of better illustrating the embodiments, certain features of the drawings may be omitted, enlarged or reduced, and do not represent the size of an actual product; it will be understood by those skilled in the art that certain well-known structures in the drawings and descriptions thereof may be omitted.
In the description of the present invention, it should be noted that, unless otherwise explicitly specified or limited, the terms "mounted" and "connected" are to be construed broadly, e.g., as being fixed or detachable or integrally connected; can be mechanically or electrically connected; they may be connected directly or indirectly through intervening media, so to speak, as communicating between the two elements. The specific meaning of the above terms in the present invention can be understood in specific cases to those skilled in the art. The technical solution of the present invention is further described with reference to the drawings and the embodiments.
As shown in fig. 1 and fig. 2, the system for optimizing the position of a wireless charging coil of an automobile of the present invention comprises a ground transmitting device 1 fixed on the ground and an automobile receiving device 2 for wirelessly connecting with the ground transmitting device 1, wherein the automobile receiving device 2 comprises:
the receiving module 3 is used for receiving the charging signal of the ground transmitting device 1 and charging the automobile;
the detection module 4 is used for detecting the relative height and horizontal distance between the ground transmitting device 1 and the receiving module 3 when the charging is started after the automobile is stopped stably, detecting related data of the receiving module 3 in real time in the automobile charging process, obtaining the time required by charging and the charging progress, and calculating the charging efficiency;
the control processing module 5 is used for collecting the charging efficiency of each time of automobile charging, and sending an execution instruction to the execution module 6 according to the relative height and horizontal distance between the current ground transmitting device 1 and the receiving module 3;
the execution module 6 is used for adjusting the height and the horizontal direction of the receiving module 3, and placing the receiving module 3 in an interval with the highest charging efficiency relative to the ground transmitting device 1;
the receiving module 3, the detecting module 4 and the executing module 6 are respectively in signal connection with the control processing module 5.
The invention has compact structure, and can effectively avoid the problem of reduction of wireless charging efficiency caused by the distance between the receiving module 3 and the ground transmitting device 1 and the deviation of the automobile. In practical application, the wireless charging of electric automobile does not have exposed connector, thoroughly avoids potential safety hazards such as electric leakage, race electricity, adopts wireless charging, can hide power and transformer underground, lets the car charge at the special charging point in parking department or street. However, due to the limitation of the space of the chassis of the automobile, the weight of the wireless charging device and other factors, the size and the layout of the receiving device need to be reasonably controlled. Due to uncertain factors such as road environment and man-made driving, the receiving module 3 must have lateral deviation after the automobile stops, so that the receiving module is not aligned with the ground transmitting device 1. In addition, factors such as the load capacity of the automobile, the air pressure of tires, road conditions and the like can influence the ground clearance of the chassis, so that the vertical clearance can be changed. The self-inductance and mutual inductance of the coil therein may also be changed, thereby affecting the output power and transmission efficiency of the wireless charging system.
Therefore, by additionally arranging the detection module 4 and the execution module 6, when the receiving module 3 starts to be in wireless connection with the ground transmitting device 1 and starts a wireless charging function, the detection module 4 detects the height and horizontal distance between the receiving module 3 and the ground transmitting device 1 on the automobile in real time and feeds the height and horizontal distance back to the control processing module 5, the control processing module 5 controls the execution module 6 to adjust the position of the receiving module 3 according to the preset distance position or the situation of multiple times of charging in the past, so that the receiving module is positioned in an interval with the highest charging efficiency relative to the ground transmitting device 1, the charging process can be continuously adjusted according to the feedback of the detection module 4, the initial value can be as close to the ground transmitting device 1 as possible, and the receiving module 3 and the ground transmitting device 1 can also be ensured to be in a certain distance range according to actual needs. In each charging process, the detection module 4 collects relevant data of the receiving module 3, such as power, frequency, current and voltage, so as to calculate the time required for charging and the charging progress, obtain corresponding charging efficiency, and feed back the control processing module 5, so as to establish a database to collect information.
In one embodiment, the receiving module 3 comprises a DC/DC converter, a first rectifier 32 and a receiving coil 33, which are in turn connected to the vehicle battery, the receiving coil 33 being used for wireless connection to the ground transmitting device 1. The receiving module 3 mainly receives the transmission of the electric energy through the receiving coil 33, and the electric energy can be connected with the automobile battery only through the first rectifier 32 and the DC/DC converter in sequence, so that the alternating current during the electric energy transmission is converted into the direct current, and the fixed voltage is effectively output after the input voltage is converted, thereby obtaining the application of the electric energy to the automobile battery. The ground transmitting device 1 comprises an aluminum back plate, a high-frequency inverter 11, a transmitting coil 12, a tray and a cover plate which are sequentially arranged on the ground, wherein the high-frequency inverter 11 is electrically connected with the transmitting coil 12, and the high-frequency inverter 11 is also connected with the commercial power through a third rectifier 13. The aluminum back plate, the tray and the cover plate are of a structure for preventing damage and stable installation and are used for protecting an internal circuit, wherein the transmitting coil 12 is connected with mains supply sequentially through the high-frequency inverter 11 and the third rectifier 13, namely, power frequency alternating current provided by the mains supply is converted into direct current through the third rectifier 13 and is converted into high-frequency low-voltage alternating current through the high-frequency inverter 11, namely, a high-frequency DC/AC conversion technology, so that electric energy is transmitted through the transmitting coil 12 and the receiving coil 33. Each rectifier may employ a Buck-type three-phase PFC converter, the high-frequency inverter 11 is made of a ferrite core, and the transmitting coil 12 is made of litz wire. For better tuning and increasing the power of the power transmission, a resonance compensation network is provided between the first rectifier 32 and the receiving coil 33 and between the high-frequency inverter 11 and the transmitting coil 12. The resonance compensation network technology can refer to an ultrasonic wireless power transmission power boosting system based on a resonance compensation network with the patent number of CN201710859199.7, the reactive loss of the system is reduced, and the transmission efficiency of a receiving end is also improved.
In one embodiment, the detection module 4 includes detection coils 41 located at four corners of the automobile, the four detection coils 41 are all connected to the voltage detector 43 through the second rectifier 42, and the detection coils 41 are used for being wirelessly connected to the ground emitting device 1, so as to generate four voltages with different magnitudes and judge the body displacement condition. The detection module 4 needs to detect multiple data of the automobile in real time, wherein the displacement of the automobile body will affect the distance between the receiving module 3 and the ground transmitting device 1, and the detection is performed in real time through the four detection coils 41, which have the same principle as the receiving coil 33, so that corresponding voltage can be generated, and because the voltages induced by the detection coils 41 at the four corners are different under the condition of the displacement of the automobile body, the voltages can be distinguished through the second rectifier 42 and the voltage detector 43, and the levelness of the receiving coil 33 is preferentially adjusted according to the actual value, so that the receiving coil 33 is continuously adjusted to the area with the maximum charging efficiency according to the optimal position and distance of the database.
Further, the detection module 4 further includes a camera 44, a radar 45 and a signal feedback unit 46, which are connected to each other, the camera 44 and the radar 45 are both used for collecting data of the current vehicle speed and the position of the vehicle relative to the ground emitting device 1, and the signal feedback unit 46 feeds the data back to the control processing module 5. The camera 44 and the radar 45 in the detection module 4 also provide data of the current speed and the position of the vehicle relative to the ground transmitting device 1 when the vehicle is charged for detection, so that a driver can quickly find the similar ground transmitting device 1 when needing to be charged.
In one embodiment, the execution module 6 includes a guide rail 61 and a translation motor 62, the translation motor 62 is used for moving the receiving coil 33 along the guide rail 61 in a horizontal plane; lifting motors 63 are further arranged at four corners of the guide rail 61, and the lifting motors 63 are used for adjusting the horizontal height of the guide rail 61. In order to adjust the position of the receiving module 3, the levelness of the guide rail 61 is adjusted by the lifting motor 63 according to the detection of the vehicle body offset condition, so that the receiving coil 33 is parallel to the ground transmitting device 1, and then the receiving coil 33 moves along each guide rail 61 by the translation motor 62 according to the detection data such as the horizontal distance, so as to move to the proper charging position.
In addition, the system also comprises a solar energy collecting unit 7, a kinetic energy collecting unit 8 and a storage battery 9, wherein the solar energy collecting unit 7 and the kinetic energy collecting unit 8 are respectively connected with a high-frequency inverter 11 through the storage battery 9; the kinetic energy collecting unit 8 comprises movable plates arranged on the ground and positioned around the ground emitting device 1, and piezoelectric materials are laid at the bottoms of the movable plates. When sunlight exists, the solar energy collecting unit 7 can be used for converting the solar energy into electric energy and storing the electric energy in the storage battery 9, and the electric energy can also be generated by the piezoelectric material through the movement of the movable plate and stored in the storage battery 9.
A position optimization method of a wireless charging coil of an automobile is applied to the position optimization system of the wireless charging coil of the automobile, and comprises the following steps:
s1, the automobile stops near the ground transmitting device 1 according to the position indication, and the wireless charging function is started;
s2, the detection module 4 detects the relative height and horizontal distance data of the ground emitting device 1 and the receiving module 3, and feeds the data back to the control processing module 5;
s3, the control processing module 5 calculates the position of the highest charging efficiency according to the data fed back by the detection module 4, and sends an execution instruction to the execution module 6;
s4, the execution module 6 adjusts the position of the receiving module 3 according to the execution instruction;
s5, the detection module 4 detects the position information of the current receiving module 3 relative to the ground transmitting device 1, detects the data of power, frequency, current and voltage of the receiving module 3 in real time to obtain the time required by charging and the charging progress, calculates the charging efficiency, and integrates the position information and the charging efficiency into charging information after the charging is finished and feeds the charging information back to the control processing module 5;
s6, the control processing module 5 establishes a database to collect charging information of each wireless charging and is used for calculating the position with the highest charging efficiency in the step S3 as reference data;
s7, if the detection module 4 detects that the charging is abnormal or full, the wireless charging function is stopped, meanwhile, the driver is reminded in the display system of the automobile, and the execution module 6 controls the receiving module 3 to be retracted to the original position.
The working principle of the invention is as follows: when the vehicle with wireless charging stops to ground emitter 1, turn on the switch that wireless charges, detection module 4 judges whether to satisfy operating condition, when satisfying operating condition, receiving module 3 begins work, the interior charge indicator of car is bright, the receiving module 3 skew that the car caused because straightness change and horizontal position change of hanging down, accessible control processing module 5 commands execution module 6 according to the data of storage and carries out work, adjust receiving module 3's position, until adjusting to the most efficient position of a charging efficiency, if meet abnormal conditions, the charging stops, the module of charging withdraws simultaneously.
In the description of the present application, it is to be understood that the directions or positional relationships indicated by the directional terms such as "front, rear, upper, lower, left, right", "lateral, vertical, horizontal" and "top, bottom", etc., are generally based on the directions or positional relationships shown in the drawings for the convenience of description and simplicity of description, and in the case of not being described to the contrary, these directional terms are not intended to indicate and imply that the device or element being referred to must have a particular orientation or be constructed and operated in a particular orientation, and therefore, should not be considered as limiting the scope of the present application.
In the drawings, the positional relationship is described for illustrative purposes only and is not to be construed as limiting the present patent; it should be understood that the above-described embodiments of the present invention are merely examples for clearly illustrating the present invention, and are not intended to limit the embodiments of the present invention. Other variations and modifications will be apparent to persons skilled in the art in light of the above description. And are neither required nor exhaustive of all embodiments. Any modification, equivalent replacement, and improvement made within the spirit and principle of the present invention should be included in the protection scope of the claims of the present invention.
Claims (10)
1. The utility model provides a car wireless charging coil position optimizing system which characterized in that, including set firmly ground transmitting device on the ground and be used for with ground transmitting device wireless connection's car receiving arrangement, car receiving arrangement includes:
the receiving module is used for receiving the charging signal of the ground transmitting device and charging the automobile;
the detection module is used for detecting the relative height and horizontal distance between the ground transmitting device and the receiving module when the charging is started after the automobile is stopped stably, detecting related data of the receiving module in real time in the automobile charging process, obtaining the time required by charging and the charging progress, and calculating the charging efficiency;
the control processing module is used for collecting the charging efficiency of each time of automobile charging and sending an execution instruction to the execution module according to the relative height and horizontal distance between the ground transmitting device and the receiving module;
the execution module is used for adjusting the height and the horizontal direction of the receiving module and placing the receiving module in an interval with the highest charging efficiency relative to the ground transmitting device;
the receiving module, the detecting module and the executing module are respectively in signal connection with the control processing module.
2. The system of claim 1, wherein the receiving module comprises a DC/DC converter, a first rectifier and a receiving coil sequentially connected to a vehicle battery, and the receiving coil is configured to be wirelessly connected to the ground transmitting device.
3. The system for optimizing the position of the wireless charging coil of the automobile according to claim 2, wherein the detection module comprises detection coils positioned at four corners of the automobile, the four detection coils are all connected with a voltage detector through a second rectifier, and the detection coils are used for being wirelessly connected with the ground emission device, so that four voltages with different sizes are generated, and the system is used for judging the deviation condition of the automobile body.
4. The system of claim 3, wherein the detection module further comprises a camera, a radar and a signal feedback unit, the camera and the radar are connected to each other, the camera and the radar are both used for collecting data of the current vehicle speed and the position of the vehicle relative to the ground emitting device, and the signal feedback unit feeds the data back to the control processing module.
5. The system of claim 4, wherein the execution module comprises a guide rail and a translation motor, the translation motor is used for moving the receiving coil on a horizontal plane along the guide rail; and lifting motors are further arranged at four corners of the guide rails and are used for adjusting the horizontal height of the guide rails.
6. The system for optimizing the position of the wireless charging coil of the automobile according to claim 5, wherein the ground transmitting device comprises an aluminum back plate, a high-frequency inverter, a transmitting coil, a tray and a cover plate which are sequentially arranged on the ground, the high-frequency inverter is electrically connected with the transmitting coil, and the high-frequency inverter is further connected with a mains supply through a third rectifier.
7. The system of claim 6, wherein a resonance compensation network is disposed between the first rectifier and the receiving coil, between the detecting coil and the second rectifier, and between the high frequency inverter and the transmitting coil.
8. The system for optimizing the position of the wireless charging coil of the automobile according to claim 7, further comprising a solar energy collecting unit, a kinetic energy collecting unit and a storage battery, wherein the solar energy collecting unit and the kinetic energy collecting unit are respectively connected with the high-frequency inverter through the storage battery; the kinetic energy collecting unit comprises movable plates arranged on the ground and located on the periphery of the ground emitting device, and piezoelectric materials are laid at the bottoms of the movable plates.
9. The system of claim 8, wherein the high frequency inverter is made of ferrite core and the transmitting coil is made of litz wire.
10. A position optimization method for a wireless charging coil of an automobile is applied to the position optimization system for the wireless charging coil of the automobile according to any one of claims 1 to 9, and comprises the following steps:
s1, the automobile stops near the ground emission device according to the position indication, and the wireless charging function is started;
s2, the detection module detects the relative height and horizontal distance data of the ground emitting device and the receiving module and feeds the data back to the control processing module;
s3, the control processing module calculates the position of the highest charging efficiency according to the data fed back by the detection module and sends an execution instruction to the execution module;
s4, the execution module adjusts the position of the receiving module according to the execution instruction;
s5, the detection module detects the current position information of the receiving module relative to the ground transmitting device, detects the data of power, frequency, current and voltage of the receiving module in real time to obtain the time required by charging and the charging progress, calculates the charging efficiency, and integrates the position information and the charging efficiency into charging information after the charging is finished and feeds the charging information back to the control processing module;
s6, the control processing module establishes a database to collect charging information of each wireless charging, and uses the database to calculate the position of the highest charging efficiency as reference data in the step S3;
and S7, stopping the wireless charging function when the detection module detects that the charging is abnormal or full, and simultaneously reminding a driver in a display system of the automobile, wherein the execution module controls the receiving module to be retracted to the original position.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202111629042.8A CN115107539A (en) | 2021-12-28 | 2021-12-28 | System and method for optimizing position of wireless charging coil of automobile |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202111629042.8A CN115107539A (en) | 2021-12-28 | 2021-12-28 | System and method for optimizing position of wireless charging coil of automobile |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN115107539A true CN115107539A (en) | 2022-09-27 |
Family
ID=83325043
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202111629042.8A Pending CN115107539A (en) | 2021-12-28 | 2021-12-28 | System and method for optimizing position of wireless charging coil of automobile |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN115107539A (en) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN115333259A (en) * | 2022-10-17 | 2022-11-11 | 北京紫光芯能科技有限公司 | Method and device for adjusting wireless charging efficiency and wireless charging receiving equipment |
| CN115593340A (en) * | 2022-09-29 | 2023-01-13 | 重庆长安汽车股份有限公司（Cn） | Vehicle-mounted electrical appliance power supply system, vehicle and vehicle-mounted electrical appliance power supply method |
-
2021
- 2021-12-28 CN CN202111629042.8A patent/CN115107539A/en active Pending
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN115593340A (en) * | 2022-09-29 | 2023-01-13 | 重庆长安汽车股份有限公司（Cn） | Vehicle-mounted electrical appliance power supply system, vehicle and vehicle-mounted electrical appliance power supply method |
| CN115333259A (en) * | 2022-10-17 | 2022-11-11 | 北京紫光芯能科技有限公司 | Method and device for adjusting wireless charging efficiency and wireless charging receiving equipment |
| CN115333259B (en) * | 2022-10-17 | 2023-02-28 | 北京紫光芯能科技有限公司 | Method and device for adjusting wireless charging efficiency and wireless charging receiving equipment |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| Lukic et al. | Cutting the cord: Static and dynamic inductive wireless charging of electric vehicles | |
| CN107069873B (en) | Photovoltaic highway induction wireless charging system and charging system of vehicle | |
| WO2018196385A1 (en) | Dynamic induction wireless charging system for vehicle and charging system of vehicle | |
| US9656564B2 (en) | Adaptive wireless energy transfer system | |
| EP2632762B1 (en) | Wireless energy transfer via coupled parasitic resonators | |
| CN115107539A (en) | System and method for optimizing position of wireless charging coil of automobile | |
| CN106936225B (en) | Positioning system and method for wireless charging of electric automobile | |
| CN110293861B (en) | Capacitive coupling type automatic wireless charging system and charging method for electric automobile | |
| CN104682581B (en) | Movable equipment dynamic radio electric supply installation and dynamic radio method of supplying power to thereof based on sectional guide rail equilibrium field intensity | |
| US20150054456A1 (en) | Electric power transmission system | |
| JP5737417B2 (en) | Power supply apparatus and power supply method | |
| CN108382242B (en) | Wireless quick charging method for electric automobile | |
| US20190393728A1 (en) | Multi-Mode Wireless Power Receiver Control | |
| US20160001669A1 (en) | Vehicle And Contactless Power Feeding System | |
| KR20140117587A (en) | Vehicle power receiving device, power supply equipment and electrical power transmission system | |
| US10333355B2 (en) | Wireless charging magnetic parameter determination | |
| US11214164B2 (en) | Method and apparatus for controlling wireless power transfer to electric vehicle using bridgeless rectifier | |
| US11292348B2 (en) | Method and apparatus for performing switching synchronization for bridgeless rectifier in electric vehicle wireless power transfer system | |
| WO2019053676A1 (en) | Inductive charging arrangements for electrical vehicles | |
| CN105109358A (en) | Wireless charging system of electric automobile | |
| Lassioui et al. | Battery charger for electric vehicles based ICPT and CPT-A State of the Art | |
| KR101974506B1 (en) | Hybrid charging system for electric car | |
| CN210454485U (en) | Wireless charging pile device of electric bicycle | |
| CN209381812U (en) | Electric car V2X dynamic radio energy bidirectional pushing system | |
| CN205565904U (en) | Magnetic induction formula and magnetic resonance formula bimodulus non contact charging device |
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| PB01 | Publication | ||
| PB01 | Publication | ||
| SE01 | Entry into force of request for substantive examination | ||
| SE01 | Entry into force of request for substantive examination |