CN112677803A - Wireless charging alignment system for new energy automobile - Google Patents

Wireless charging alignment system for new energy automobile Download PDF

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Publication number
CN112677803A
CN112677803A CN202110033502.4A CN202110033502A CN112677803A CN 112677803 A CN112677803 A CN 112677803A CN 202110033502 A CN202110033502 A CN 202110033502A CN 112677803 A CN112677803 A CN 112677803A
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charging
signal
module
calibration module
calibration
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刘春梅
陈琨
朱旭晖
程美
秦咏梅
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Hunan Automotive Engineering Vocational College
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Hunan Automotive Engineering Vocational College
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Priority to CN202110033502.4A priority Critical patent/CN112677803A/en
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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
    • 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
    • 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
    • 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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Abstract

The invention provides a wireless charging alignment system of a new energy automobile, which comprises a charging end calibration module, a charging end adjustment module, a receiving end calibration module and a receiving end guide module, wherein the charging end calibration module and the receiving end calibration module are provided with signal receivers, alignment calibration is carried out through the signal receivers, the receiving end calibration module sends an adjustment instruction to the receiving end guide module according to alignment calibration data, the receiving end guide module generates and displays an image, the charging end calibration module sends an adjustment instruction to the charging end adjustment module according to the alignment calibration data, and the charging end adjustment module adjusts the position of a charging coil. Can help the driver to counterpoint through this system better and park, guarantee that the wireless charging efficiency of new energy automobile is in higher level, make this system can adapt to different motorcycle types through the adjustment of end adjusting module that charges to the charging coil simultaneously.

Description

Wireless charging alignment system for new energy automobile
Technical Field
The invention relates to the technical field of electric automobiles, in particular to a wireless charging alignment system for a new energy automobile.
Background
Along with electric automobile's popularization, more and more fill electric pile and be installed at each place, fill the tanker aircraft of its function of electric pile similar to the gas station the inside, can fix on ground or wall, and along with the development of wireless charging technique, wireless electric pile that fills will replace the tradition because of its convenience fills electric pile, and the counterpoint of high accuracy is the prerequisite that wireless electric pile that fills carries out the high efficiency and charges.
Many alignment systems have been developed, and through extensive search and reference, it has been found that the existing systems are disclosed as KR101704264B1, KR1020140051609A and KR101558698B1, including identification lines, parking stops and video devices. In the scheme, the parking limiter limits the reversing position of the vehicle, and the imaging device is matched with the identification line to limit the relative position of the vehicle and the identification line. The driver can adjust the position of the vehicle body in time according to the position image of the vehicle body fed back by the image device relative to the identification line, so that the difficulty in accurate alignment of the new energy vehicle and the wireless charging coil is effectively reduced. However, the system is only aligned by the imaging device, so that the accuracy is not high enough, and the charging efficiency is further influenced.
Disclosure of Invention
The invention aims to provide a new energy automobile wireless charging alignment system aiming at the defects,
in order to overcome the defects of the prior art, the invention adopts the following technical scheme:
a wireless charging alignment system of a new energy automobile comprises a charging end calibration module, a charging end adjustment module, a receiving end calibration module and a receiving end guide module, wherein the charging end calibration module and the receiving end calibration module are provided with signal receivers and perform alignment calibration through the signal receivers, the receiving end guide module is installed in a cab in the automobile and guides a driver to stop in an image mode, and the charging end adjustment module is installed in a charging pile and adjusts the position of a charging coil;
further, the signal receiver comprises a transmitting part and a receiving part, the transmitting part comprises a signal generator, a signal modulator, a transmitting filter, a transmitting digital-to-analog converter and a transmitting port, and the receiving part comprises a receiving port, a signal amplifier and a signal processor;
furthermore, two signal receiving and sending devices in the same horizontal position are arranged on the charging end calibration module, and two signal receiving and sending devices in the same vertical line are arranged on the receiving end calibration module;
further, the two signal receivers on the charging terminal calibration module send signals to the signal receivers of the receiving terminal calibration module, and the receiving terminal calibration module calculates the left and right offset of the vehicle according to the received time difference;
further, the two signal receiving and sending devices on the power receiving end calibration module send signals to the signal receiving and sending devices of the charging end calibration module, and the charging end calibration module calculates the upper and lower offset of a charging coil of the charging pile according to the received time difference;
furthermore, the power receiving end calibration module takes a straight line where two signal receivers on the charging end calibration module are located as an x axis, a perpendicular line of a midpoint of the two signal receivers is a y axis to establish a coordinate system, a motion track of the signal receivers of the power receiving end calibration module is simulated into a function f (M), a real-time tangent line is calculated through the function f (M) to further convert the function f (M) into an offset angle of the vehicle, and the offset angle and the left and right offsets are sent to the power receiving end guidance module and presented in an image form to guide a driver to stop the vehicle;
further, an infrared distance meter is further arranged on the charging end calibration module, and when the infrared distance meter detects a vehicle within a certain distance, the signal transceiver is started to carry out alignment calibration;
furthermore, the end calibration module that charges includes connecting plate and calibration plate, the connecting plate with fill electric pile fixed connection, the installation on the calibration plate the ware is received and sent out to the signal, the connecting plate with the calibration plate passes through the locking groove joint.
The beneficial effects obtained by the invention are as follows:
this system comes the accurate positioning vehicle and fills the positional relation between the electric pile through the data transmission between the ware is received in the signal, including horizontal migration and angular migration for final vehicle is in a suitable relative position with filling electric pile when stopping steady, has improved wireless charging efficiency who charges greatly, and simultaneously, this system can also adjust from top to bottom filling electric pile's charging coil, with the motorcycle type that adapts to the difference.
Drawings
The invention will be further understood from the following description in conjunction with the accompanying drawings. The components in the figures are not necessarily to scale, emphasis instead being placed upon illustrating the principles of the embodiments. Like reference numerals designate corresponding parts throughout the different views.
FIG. 1 is a schematic diagram of the alignment calibration process of the present system.
FIG. 2 is a diagram illustrating offset calculation.
Fig. 3 is a schematic diagram of the calculation of the offset angle.
Fig. 4 is a schematic diagram of image display of the power receiving end guidance module.
Fig. 5 is a diagram illustrating a relationship between charging efficiency and offset.
Fig. 6 is a modular schematic.
Detailed Description
In order to make the objects and advantages of the present invention more apparent, the present invention will be further described in detail with reference to the following embodiments; it should be understood that the specific embodiments described herein are merely illustrative of the invention and are not intended to limit the invention. Other systems, methods, and/or features of the present embodiments will become apparent to those skilled in the art upon review of the following detailed description. It is intended that all such additional systems, methods, features and advantages be included within this description, be within the scope of the invention, and be protected by the accompanying claims. Additional features of the disclosed embodiments are described in, and will be apparent from, the detailed description that follows.
The same or similar reference numerals in the drawings of the embodiments of the present invention correspond to the same or similar components; in the description of the present invention, it should be understood that if there is an orientation or positional relationship indicated by terms such as "upper", "lower", "left", "right", etc., based on the orientation or positional relationship shown in the drawings, it is only for convenience of description and simplification of description, but it is not indicated or implied that the device or component referred to must have a specific orientation, be constructed and operated in a specific orientation, and therefore, the terms describing the positional relationship in the drawings are only used for illustrative purposes and are not to be construed as limitations of the present patent, and specific meanings of the terms may be understood by those skilled in the art according to specific situations.
The first embodiment.
A wireless charging alignment system of a new energy automobile comprises a charging end calibration module, a charging end adjustment module, a receiving end calibration module and a receiving end guide module, wherein the charging end calibration module and the receiving end calibration module are provided with signal receivers and perform alignment calibration through the signal receivers, the receiving end guide module is installed in a cab in the automobile and guides a driver to stop in an image mode, and the charging end adjustment module is installed in a charging pile and adjusts the position of a charging coil;
the signal receiver comprises a transmitting part and a receiving part, wherein the transmitting part comprises a signal generator, a signal modulator, a transmitting filter, a transmitting digital-to-analog converter and a transmitting port, and the receiving part comprises a receiving port, a signal amplifier and a signal processor;
the charging end calibration module is provided with two signal receiving and sending devices in the same horizontal position, and the receiving end calibration module is provided with two signal receiving and sending devices in the same vertical line;
the two signal receivers on the charging end calibration module send signals to the signal receivers of the power receiving end calibration module, and the power receiving end calibration module calculates the left and right offset of the vehicle according to the received time difference;
the two signal receiving and sending devices on the power receiving end calibration module send signals to the signal receiving and sending devices of the charging end calibration module, and the charging end calibration module calculates the upper and lower offset of a charging coil of the charging pile according to the received time difference;
the power receiving end calibration module takes a straight line where two signal receivers on the charging end calibration module are located as an x axis, a coordinate system is established by taking a perpendicular line of midpoints of the two signal receivers as a y axis, a motion track of the signal receiver of the power receiving end calibration module is simulated into a function f (M), a real-time tangent line is calculated through the function f (M) to be converted into an offset angle of a vehicle, and the offset angle and the left and right offset are sent to the power receiving end guidance module and presented in an image form to guide a driver to park;
the charging end calibration module is also provided with an infrared distance meter, and when the infrared distance meter detects a vehicle within a certain distance, the infrared distance meter starts a signal transceiver to carry out alignment calibration;
the charging end calibration module comprises a connecting plate and a calibration plate, the connecting plate is fixedly connected with the charging pile, the signal receiving and sending device is installed on the calibration plate, and the connecting plate and the calibration plate are connected through a locking groove in a clamped mode.
Example two.
A wireless charging alignment system of a new energy automobile comprises a charging end calibration module, a charging end adjustment module, a receiving end calibration module and a receiving end guide module, wherein the charging end calibration module and the receiving end calibration module are provided with signal receivers and perform alignment calibration through the signal receivers, the receiving end guide module is installed in a cab in the automobile and guides a driver to stop in an image mode, and the charging end adjustment module is installed in a charging pile and adjusts the position of a charging coil;
the signal receiver comprises a transmitting part and a receiving part, wherein the transmitting part comprises a signal generator, a signal modulator, a transmitting filter, a transmitting digital-to-analog converter and a transmitting port, and the receiving part comprises a receiving port, a signal amplifier and a signal processor;
the charging end calibration module is provided with two signal receiving and sending devices in the same horizontal position, and the receiving end calibration module is provided with two signal receiving and sending devices in the same vertical line;
the two signal receivers on the charging end calibration module send signals to the signal receivers of the power receiving end calibration module, and the power receiving end calibration module calculates the left and right offset of the vehicle according to the received time difference;
the two signal receiving and sending devices on the power receiving end calibration module send signals to the signal receiving and sending devices of the charging end calibration module, and the charging end calibration module calculates the upper and lower offset of a charging coil of the charging pile according to the received time difference;
the power receiving end calibration module takes a straight line where two signal receivers on the charging end calibration module are located as an x axis, a coordinate system is established by taking a perpendicular line of midpoints of the two signal receivers as a y axis, a motion track of the signal receiver of the power receiving end calibration module is simulated into a function f (M), a real-time tangent line is calculated through the function f (M) to be converted into an offset angle of a vehicle, and the offset angle and the left and right offset are sent to the power receiving end guidance module and presented in an image form to guide a driver to park;
the charging end calibration module is also provided with an infrared distance meter, and when the infrared distance meter detects a vehicle within a certain distance, the infrared distance meter starts a signal transceiver to carry out alignment calibration;
the charging end calibration module comprises a connecting plate and a calibration plate, the connecting plate is fixedly connected with the charging pile, the signal receiver is mounted on the calibration plate, and the connecting plate and the calibration plate are clamped through a locking groove;
the new energy automobile wireless charging alignment system comprises a charging end calibration module, a charging end adjustment module, a receiving end calibration module and a receiving end guide module, wherein the charging end calibration module and the receiving end calibration module are provided with signal receivers, alignment calibration is carried out through the signal receivers, the receiving end calibration module sends an adjustment instruction to the receiving end guide module according to alignment calibration data, the receiving end guide module generates and displays an image, the charging end calibration module sends an adjustment instruction to the charging end adjustment module according to the alignment calibration data, and the charging end adjustment module adjusts the position of a charging coil;
the charging end calibration module is installed on the outer side of the charging pile, the charging end adjustment module is installed on the inner side of the charging pile, the receiving end calibration module is installed at the tail of the vehicle, and the receiving end guidance module is installed in a cab of the vehicle;
the charging end calibration module is provided with two signal receivers at the same horizontal position, namely a first signal receiver and a second signal receiver, the power receiving end calibration module is provided with two signal receivers on the same vertical line, namely a third signal receiver and a fourth signal receiver, the signal receiver comprises a transmitting part and a receiving part, the transmitting part comprises a signal generator, a signal modulator, a transmitting filter, a transmitting digital-to-analog converter and a transmitting port, the signal generator generates a signal, the signal is modulated by the signal modulator, the analog signal is converted into a digital signal by the transmitting digital-to-analog converter after being filtered and removed by the transmitting filter, and the digital signal is transmitted by a transmitting port, the receiving part comprises a receiving port, a signal amplifier and a signal processor, and the alignment calibration comprises two processes of vehicle calibration and coil calibration;
the vehicle calibration comprises the following steps:
s11, the first signal receiver sends the signal with the sending time stamp t1The third signal receiver generates a receiving time t after receiving the alignment information2；
S12, the second signal receiver sends the signal with the sending time stamp t3The third signal receiver generates a receiving time t after receiving the alignment information4；
S13, calculating t1 t2Time difference Δ t of1And converting a distance l between the first signal receiver and the third signal receiver1Calculating t3 t4Time difference Δ t of2And converted into the distance l between the second signal receiver and the third signal receiver2；
S14, according to l1、l2And the first signal receiver and the second signalDistance l between hair extension devices3Calculating the relative position M of the third signal receiver and the left and right offset delta l of the vehicle;
s15, measuring the real-time tangential direction of the vehicle according to the continuous track of the M, and further calculating the deviation angle delta theta of the vehicle;
the coil calibration comprises the following steps:
s21, the third signal receiver sends t 'with sending time stamp'1The first signal transmitter generates the reception time t 'after receiving the alignment information'2；
S22, the fourth signal receiver sends t 'with sending time stamp'3The first signal transmitter generates the reception time t 'after receiving the alignment information'4；
S23, calculating t'1t′2Time difference of Δ t'1And converting a distance l 'of the third signal receiver from the first signal receiver'1Calculating t'3t′4Time difference of Δ t'2And converted into a distance l 'of the fourth signal receiver from the first signal receiver'2；
S24, according to l'1、l′2And a distance l 'between the third and fourth signal receivers'3And calculating the up-down offset delta l' of the charging coil.
Example three.
A wireless charging alignment system of a new energy automobile comprises a charging end calibration module, a charging end adjustment module, a receiving end calibration module and a receiving end guide module, wherein the charging end calibration module and the receiving end calibration module are provided with signal receivers and perform alignment calibration through the signal receivers, the receiving end guide module is installed in a cab in the automobile and guides a driver to stop in an image mode, and the charging end adjustment module is installed in a charging pile and adjusts the position of a charging coil;
the signal receiver comprises a transmitting part and a receiving part, wherein the transmitting part comprises a signal generator, a signal modulator, a transmitting filter, a transmitting digital-to-analog converter and a transmitting port, and the receiving part comprises a receiving port, a signal amplifier and a signal processor;
the charging end calibration module is provided with two signal receiving and sending devices in the same horizontal position, and the receiving end calibration module is provided with two signal receiving and sending devices in the same vertical line;
the two signal receivers on the charging end calibration module send signals to the signal receivers of the power receiving end calibration module, and the power receiving end calibration module calculates the left and right offset of the vehicle according to the received time difference;
the two signal receiving and sending devices on the power receiving end calibration module send signals to the signal receiving and sending devices of the charging end calibration module, and the charging end calibration module calculates the upper and lower offset of a charging coil of the charging pile according to the received time difference;
the power receiving end calibration module takes a straight line where two signal receivers on the charging end calibration module are located as an x axis, a coordinate system is established by taking a perpendicular line of midpoints of the two signal receivers as a y axis, a motion track of the signal receiver of the power receiving end calibration module is simulated into a function f (M), a real-time tangent line is calculated through the function f (M) to be converted into an offset angle of a vehicle, and the offset angle and the left and right offset are sent to the power receiving end guidance module and presented in an image form to guide a driver to park;
the charging end calibration module is also provided with an infrared distance meter, and when the infrared distance meter detects a vehicle within a certain distance, the infrared distance meter starts a signal transceiver to carry out alignment calibration;
the charging end calibration module comprises a connecting plate and a calibration plate, the connecting plate is fixedly connected with the charging pile, the signal receiver is mounted on the calibration plate, and the connecting plate and the calibration plate are clamped through a locking groove;
the new energy automobile wireless charging alignment system comprises a charging end calibration module, a charging end adjustment module, a receiving end calibration module and a receiving end guide module, wherein the charging end calibration module and the receiving end calibration module are provided with signal receivers, alignment calibration is carried out through the signal receivers, the receiving end calibration module sends an adjustment instruction to the receiving end guide module according to alignment calibration data, the receiving end guide module generates and displays an image, the charging end calibration module sends an adjustment instruction to the charging end adjustment module according to the alignment calibration data, and the charging end adjustment module adjusts the position of a charging coil;
the charging end calibration module is installed on the outer side of the charging pile, the charging end adjustment module is installed on the inner side of the charging pile, the receiving end calibration module is installed at the tail of the vehicle, and the receiving end guidance module is installed in a cab of the vehicle;
the charging end calibration module is provided with two signal receivers at the same horizontal position, namely a first signal receiver and a second signal receiver, the power receiving end calibration module is provided with two signal receivers on the same vertical line, namely a third signal receiver and a fourth signal receiver, the signal receiver comprises a transmitting part and a receiving part, the transmitting part comprises a signal generator, a signal modulator, a transmitting filter, a transmitting digital-to-analog converter and a transmitting port, the signal generator generates a signal, the signal is modulated by the signal modulator, the analog signal is converted into a digital signal by the transmitting digital-to-analog converter after being filtered and removed by the transmitting filter, and the digital signal is transmitted by a transmitting port, the receiving part comprises a receiving port, a signal amplifier and a signal processor, and the alignment calibration comprises two processes of vehicle calibration and coil calibration;
the vehicle calibration comprises the following steps:
s11, the first signal receiver sends the signal with the sending time stamp t1The third signal receiver generates a receiving time t after receiving the alignment information2；
S12, the second signal receiver sends the signal with the sending time stamp t3The third signal receiver generates a receiving time t after receiving the alignment information4；
S13, calculating t1 t2Time difference Δ t of1And converting a distance l between the first signal receiver and the third signal receiver1Calculating t3 t4Time difference Δ t of2And converted into the distance l between the second signal receiver and the third signal receiver2；
S14, according to l1、l2And a distance l between the first signal receiver and the second signal receiver3Calculating the relative position M of the third signal receiver and the left and right offset delta l of the vehicle;
s15, measuring the real-time tangential direction of the vehicle according to the continuous track of the M, and further calculating the deviation angle delta theta of the vehicle;
the coil calibration comprises the following steps:
s21, the third signal receiver sends t 'with sending time stamp'1The first signal transmitter generates the reception time t 'after receiving the alignment information'2；
S22, the fourth signal receiver sends t 'with sending time stamp'3The first signal transmitter generates the reception time t 'after receiving the alignment information'4；
S23, calculating t'1t′2Time difference of Δ t'1And converting a distance l 'of the third signal receiver from the first signal receiver'1Calculating t'3t′4Time difference of Δ t'2And converted into a distance l 'of the fourth signal receiver from the first signal receiver'2；
S24, according to l'1、l′2And a distance l 'between the third and fourth signal receivers'3Calculating the upper and lower offset delta l' of the charging coil;
as shown in fig. 2, the formula for calculating the offset in the steps S14 and S24 is:
Figure BDA0002893233220000081
Figure BDA0002893233220000091
Δ l is negative for leftward shift, Δ l is positive for rightward shift, Δ l 'is negative for upward shift, and Δ l' is positive for downward shift;
as shown in fig. 3, the method for calculating the offset angle in step S15 includes:
firstly, establishing a coordinate system which takes the middle point of the first signal receiver and the second signal receiver as an origin, the direction from the origin to the first signal receiver is the positive direction of an x axis, and the vertical line of the coordinate system is a y axis, and obtaining a function f (M) of an M point track in the coordinate system and calculating a derivative f' (M) of the function according to the continuous M point positions calculated in the step S14;
M0the tangent slope at point in time is: k ═ f' (M)0)；
The offset angle delta theta is 90-arctank;
the power receiving end calibration module sends delta l and delta theta to the power receiving end guidance module, and the power receiving end guidance module displays the model position and angle of the vehicle on a screen as shown in fig. 4, so that a driver can conveniently adjust and park;
the power receiving end guidance module can also display the distance delta S between the vehicle and the charging pile, and the calculation formula of the delta S is as follows:
Figure BDA0002893233220000092
if the vehicle is provided with an automatic parking system, the power receiving end guidance module is connected into the automatic parking system and controls the vehicle to park so that delta l and delta theta are both 0;
after the vehicle is stopped, the charging terminal adjusting module receives the upper and lower offset Δ l' calculated in step S24, and adjusts the charging coil accordingly.
Example four.
A wireless charging alignment system of a new energy automobile comprises a charging end calibration module, a charging end adjustment module, a receiving end calibration module and a receiving end guide module, wherein the charging end calibration module and the receiving end calibration module are provided with signal receivers and perform alignment calibration through the signal receivers, the receiving end guide module is installed in a cab in the automobile and guides a driver to stop in an image mode, and the charging end adjustment module is installed in a charging pile and adjusts the position of a charging coil;
the signal receiver comprises a transmitting part and a receiving part, wherein the transmitting part comprises a signal generator, a signal modulator, a transmitting filter, a transmitting digital-to-analog converter and a transmitting port, and the receiving part comprises a receiving port, a signal amplifier and a signal processor;
the charging end calibration module is provided with two signal receiving and sending devices in the same horizontal position, and the receiving end calibration module is provided with two signal receiving and sending devices in the same vertical line;
the two signal receivers on the charging end calibration module send signals to the signal receivers of the power receiving end calibration module, and the power receiving end calibration module calculates the left and right offset of the vehicle according to the received time difference;
the two signal receiving and sending devices on the power receiving end calibration module send signals to the signal receiving and sending devices of the charging end calibration module, and the charging end calibration module calculates the upper and lower offset of a charging coil of the charging pile according to the received time difference;
the power receiving end calibration module takes a straight line where two signal receivers on the charging end calibration module are located as an x axis, a coordinate system is established by taking a perpendicular line of midpoints of the two signal receivers as a y axis, a motion track of the signal receiver of the power receiving end calibration module is simulated into a function f (M), a real-time tangent line is calculated through the function f (M) to be converted into an offset angle of a vehicle, and the offset angle and the left and right offset are sent to the power receiving end guidance module and presented in an image form to guide a driver to park;
the charging end calibration module is also provided with an infrared distance meter, and when the infrared distance meter detects a vehicle within a certain distance, the infrared distance meter starts a signal transceiver to carry out alignment calibration;
the charging end calibration module comprises a connecting plate and a calibration plate, the connecting plate is fixedly connected with the charging pile, the signal receiver is mounted on the calibration plate, and the connecting plate and the calibration plate are clamped through a locking groove;
the new energy automobile wireless charging alignment system comprises a charging end calibration module, a charging end adjustment module, a receiving end calibration module and a receiving end guide module, wherein the charging end calibration module and the receiving end calibration module are provided with signal receivers, alignment calibration is carried out through the signal receivers, the receiving end calibration module sends an adjustment instruction to the receiving end guide module according to alignment calibration data, the receiving end guide module generates and displays an image, the charging end calibration module sends an adjustment instruction to the charging end adjustment module according to the alignment calibration data, and the charging end adjustment module adjusts the position of a charging coil;
the charging end calibration module is installed on the outer side of the charging pile, the charging end adjustment module is installed on the inner side of the charging pile, the receiving end calibration module is installed at the tail of the vehicle, and the receiving end guidance module is installed in a cab of the vehicle;
the charging end calibration module is provided with two signal receivers at the same horizontal position, namely a first signal receiver and a second signal receiver, the power receiving end calibration module is provided with two signal receivers on the same vertical line, namely a third signal receiver and a fourth signal receiver, the signal receiver comprises a transmitting part and a receiving part, the transmitting part comprises a signal generator, a signal modulator, a transmitting filter, a transmitting digital-to-analog converter and a transmitting port, the signal generator generates a signal, the signal is modulated by the signal modulator, the analog signal is converted into a digital signal by the transmitting digital-to-analog converter after being filtered and removed by the transmitting filter, and the digital signal is transmitted by a transmitting port, the receiving part comprises a receiving port, a signal amplifier and a signal processor, and the alignment calibration comprises two processes of vehicle calibration and coil calibration;
the vehicle calibration comprises the following steps:
s11, the first signal receiver sends the signal with the sending time stamp t1The third signal receiver generates a receiving time t after receiving the alignment information2；
S12, the second signal receiver sends the signal with the sending time stamp t3The third signal receiver generates a receiving time t after receiving the alignment information4；
S13, calculating t1 t2Time difference Δ t of1And converting a distance l between the first signal receiver and the third signal receiver1Calculating t3 t4Time difference Δ t of2And converted into the distance l between the second signal receiver and the third signal receiver2；
S14, according to l1、l2And a distance l between the first signal receiver and the second signal receiver3Calculating the relative position M of the third signal receiver and the left and right offset delta l of the vehicle;
s15, measuring the real-time tangential direction of the vehicle according to the continuous track of the M, and further calculating the deviation angle delta theta of the vehicle;
the coil calibration comprises the following steps:
s21, the third signal receiver sends t 'with sending time stamp'1The first signal transmitter generates the reception time t 'after receiving the alignment information'2；
S22, the fourth signal receiver sends t 'with sending time stamp'3The first signal transmitter generates the reception time t 'after receiving the alignment information'4；
S23, calculating t'1t′2Time difference of Δ t'1And converting a distance l 'of the third signal receiver from the first signal receiver'1Calculating t'3t′4Time difference of Δ t'2And convertA distance l 'between the fourth signal receiver and the first signal receiver'2；
S24, according to l'1、l′2And a distance l 'between the third and fourth signal receivers'3Calculating the upper and lower offset delta l' of the charging coil;
as shown in fig. 2, the formula for calculating the offset in the steps S14 and S24 is:
Figure BDA0002893233220000111
Figure BDA0002893233220000121
Δ l is negative for leftward shift, Δ l is positive for rightward shift, Δ l 'is negative for upward shift, and Δ l' is positive for downward shift;
as shown in fig. 3, the method for calculating the offset angle in step S15 includes:
firstly, establishing a coordinate system which takes the middle point of the first signal receiver and the second signal receiver as an origin, the direction from the origin to the first signal receiver is the positive direction of an x axis, and the vertical line of the coordinate system is a y axis, and obtaining a function f (M) of an M point track in the coordinate system and calculating a derivative f' (M) of the function according to the continuous M point positions calculated in the step S14;
M0the tangent slope at point in time is: k ═ f' (M)0)；
The offset angle delta theta is 90-arctank;
the power receiving end calibration module sends delta l and delta theta to the power receiving end guidance module, and the power receiving end guidance module displays the model position and angle of the vehicle on a screen as shown in fig. 4, so that a driver can conveniently adjust and park;
the power receiving end guidance module can also display the distance delta S between the vehicle and the charging pile, and the calculation formula of the delta S is as follows:
Figure BDA0002893233220000122
if the vehicle is provided with an automatic parking system, the power receiving end guidance module is connected into the automatic parking system and controls the vehicle to park so that delta l and delta theta are both 0;
after the vehicle is stopped, the charging terminal adjusting module receives the upper and lower offset delta l' calculated in the step S24, and correspondingly adjusts the charging coil;
the charging end calibration module comprises a connecting plate and a calibration plate, a square groove is arranged in the middle of the connecting plate, a fixed anchor is arranged in the square groove, the connecting plate is connected with a charging pile through the fixed anchor, two connecting strips are arranged between the connecting plate and the calibration plate, the connecting strips and the connecting plate are integrally formed, locking grooves are arranged at two ends of each connecting strip, a convex block is arranged at the back of the calibration plate, a locking sleeve is arranged on the convex block, the locking sleeve is matched with the locking grooves in a clamping manner, the convex block and the calibration plate are integrally formed, a cavity is arranged in the convex block, threaded holes are formed in four corners of the calibration plate and communicated with the cavity, fastening bolts are arranged in the threaded holes, two symmetrical fixed grooves are formed in the surface of the calibration plate, the signal receiver is installed in the fixed grooves, and data line guide, and a data line led out from the signal receiver is connected with the charging end adjusting module through the data line guide pipe.
Although the invention has been described above with reference to various embodiments, it should be understood that many changes and modifications may be made without departing from the scope of the invention. That is, the methods, systems, and devices discussed above are examples. Various configurations may omit, substitute, or add various procedures or components as appropriate. For example, in alternative configurations, the methods may be performed in an order different than that described, and/or various components may be added, omitted, and/or combined. Moreover, features described with respect to certain configurations may be combined in various other configurations, as different aspects and elements of the configurations may be combined in a similar manner. Further, elements therein may be updated as technology evolves, i.e., many elements are examples and do not limit the scope of the disclosure or claims.
Specific details are given in the description to provide a thorough understanding of the exemplary configurations including implementations. However, configurations may be practiced without these specific details, for example, well-known circuits, processes, algorithms, structures, and techniques have been shown without unnecessary detail in order to avoid obscuring the configurations. This description provides example configurations only, and does not limit the scope, applicability, or configuration of the claims. Rather, the foregoing description of the configurations will provide those skilled in the art with an enabling description for implementing the described techniques. Various changes may be made in the function and arrangement of elements without departing from the spirit or scope of the disclosure.
In conclusion, it is intended that the foregoing detailed description be regarded as illustrative rather than limiting, and that it be understood that these examples are illustrative only and are not intended to limit the scope of the invention. After reading the description of the invention, the skilled person can make various changes or modifications to the invention, and these equivalent changes and modifications also fall into the scope of the invention defined by the claims.

Claims (8)

1. The utility model provides a wireless counterpoint system that charges of new energy automobile, instructs the module including the end of charging calibration module, the end of charging adjustment module, the end of receiving electricity calibration module and the end of receiving electricity, the end of charging calibration module with the end of receiving electricity is equipped with the signal on the calibration module and is received the transceiver and pass through the signal is received the transceiver and is counterpointed the calibration, the end of receiving electricity instructs the module to install in the car driver's cabin and instruct the driver to park with the image form, the end of charging adjustment module is installed in charging electric pile and is adjusted charging coil's position.
2. The wireless charging alignment system of the new energy automobile according to claim 1, wherein the signal receiver comprises a transmitting part and a receiving part, the transmitting part comprises a signal generator, a signal modulator, a transmitting filter, a transmitting digital-to-analog converter and a transmitting port, and the receiving part comprises a receiving port, a signal amplifier and a signal processor.
3. The wireless charging alignment system of the new energy automobile as claimed in any one of the preceding claims, wherein the charging end calibration module is provided with two signal receiving and sending devices located at the same horizontal position, and the receiving end calibration module is provided with two signal receiving and sending devices located at the same vertical line.
4. The wireless charging alignment system of the new energy automobile according to any one of the preceding claims, wherein two signal receivers on the charging terminal calibration module send signals to the signal receivers of the receiving terminal calibration module, and the receiving terminal calibration module calculates the left and right offset of the vehicle according to the received time difference.
5. The wireless charging alignment system of the new energy automobile as claimed in any one of the preceding claims, wherein the two signal receivers on the power receiving terminal calibration module send signals to the signal receivers of the charging terminal calibration module, and the charging terminal calibration module calculates an up-down offset of a charging coil of the charging pile according to the received time difference.
6. The wireless charging alignment system for the new energy automobile as claimed in one of the preceding claims, wherein the power receiving end calibration module uses a straight line where two signal receivers on the charging end calibration module are located as an x-axis, a coordinate system is established with a perpendicular line between the two signal receivers as a y-axis, a motion trajectory of the signal receivers of the power receiving end calibration module is simulated as a function f (m), the function f (m) is calculated to calculate a real-time tangent line and further convert the real-time tangent line into an offset angle of the vehicle, and the offset angle and the left and right offset are sent to the power receiving end guidance module and presented in the form of an image to guide a driver to stop the vehicle.
7. The system according to any one of the preceding claims, wherein the charging terminal calibration module further comprises an infrared distance meter, and when the infrared distance meter detects a vehicle within a certain distance, the signal transceiver is activated to perform alignment calibration.
8. The wireless charging alignment system of the new energy automobile as claimed in any one of the preceding claims, wherein the charging terminal calibration module includes a connection board and a calibration board, the connection board is fixedly connected with the charging pile, the calibration board is provided with the signal transceiver, and the connection board and the calibration board are clamped through a locking groove.
CN202110033502.4A 2021-01-12 2021-01-12 Wireless charging alignment system for new energy automobile Pending CN112677803A (en)

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CN111301402A (en) * 2018-12-12 2020-06-19 通用汽车环球科技运作有限责任公司 System and method for assisting vehicle parking in alignment with wireless battery charging pad
CN111391681A (en) * 2020-06-05 2020-07-10 深圳赫兹创新技术有限公司 Charging system and charging management platform of portable wireless transmitting terminal that charges

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* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN104520135A (en) * 2012-08-09 2015-04-15 宝马股份公司 Device and method for positioning by means of triangulation
CN105083045A (en) * 2014-05-21 2015-11-25 福特全球技术公司 Sonic triangulation method for locating vehicles for hands-free electric vehicle charging
CN108602447A (en) * 2016-02-05 2018-09-28 株式会社东芝 Charging unit and position offset detection method
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