CN109649194B - Vehicle wireless charging alignment deviation detection device and method - Google Patents
Vehicle wireless charging alignment deviation detection device and method Download PDFInfo
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- CN109649194B CN109649194B CN201910031394.XA CN201910031394A CN109649194B CN 109649194 B CN109649194 B CN 109649194B CN 201910031394 A CN201910031394 A CN 201910031394A CN 109649194 B CN109649194 B CN 109649194B
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- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
- Y02T—CLIMATE CHANGE MITIGATION TECHNOLOGIES RELATED TO TRANSPORTATION
- Y02T10/00—Road transport of goods or passengers
- Y02T10/60—Other road transportation technologies with climate change mitigation effect
- Y02T10/70—Energy storage systems for electromobility, e.g. batteries
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- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
- Y02T—CLIMATE CHANGE MITIGATION TECHNOLOGIES RELATED TO TRANSPORTATION
- Y02T10/00—Road transport of goods or passengers
- Y02T10/60—Other road transportation technologies with climate change mitigation effect
- Y02T10/7072—Electromobility specific charging systems or methods for batteries, ultracapacitors, supercapacitors or double-layer capacitors
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- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
- Y02T—CLIMATE CHANGE MITIGATION TECHNOLOGIES RELATED TO TRANSPORTATION
- Y02T90/00—Enabling technologies or technologies with a potential or indirect contribution to GHG emissions mitigation
- Y02T90/10—Technologies relating to charging of electric vehicles
- Y02T90/14—Plug-in electric vehicles
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Abstract
The invention discloses a vehicle wireless charging alignment deviation detection device and a method, which relate to the field of wireless charging, and the device comprises a main controller, a light emitter driving module, a light emitter, a light sensor array, a measuring circuit and an alignment deviation calculation module; the wireless charging alignment deviation detection device has the advantages that the main controller controls the light emitter driving module to control the light emitter mounted on the ground to emit light signals, the measuring circuit determines the position of the maximum output light sensor in the light sensor array by detecting the output value of the light sensor array mounted on the chassis of the charging vehicle, and then the alignment deviation is calculated.
Description
Technical Field
The invention relates to the field of wireless charging, in particular to a vehicle wireless charging alignment deviation detection device and method.
Background
Electric vehicles are the current popular research and development direction in the automobile industry field, and have been rapidly developed, popularized and applied worldwide in recent years. The wireless charging has the advantages of non-contact, convenience in use, charging immediately after stopping, safety, reliability and the like, and can provide good user experience for users. However, the wireless charging technology still faces some problems to be solved urgently in the using process, and one of the more critical problems is the problem of detecting the alignment deviation of the wireless charging coil. The inaccurate alignment of the charging coil can greatly reduce the charging efficiency, and even lead to the incapability of charging when the offset is too large. At present, in a wireless charging device for an electric automobile, because an electric energy receiving coil is installed on a vehicle chassis and an electric energy transmitting coil is installed on the ground, a driver cannot observe the relative position of the receiving coil and the transmitting coil in the parking process, so that the wireless charging alignment deviation cannot be accurately evaluated and corrected. Therefore, a non-contact wireless charging alignment deviation detection method is desired.
Disclosure of Invention
The present invention is directed to solving, at least to some extent, one of the technical problems in the related art. Therefore, the invention aims to provide a vehicle wireless charging alignment deviation detection device which is simple in structure, strong in environmental adaptability and high in detection precision.
Therefore, the second purpose of the invention is to provide a vehicle wireless charging alignment deviation detection method which has simple structure, strong environmental adaptability and high detection precision.
The technical scheme adopted by the invention is as follows:
the utility model provides a wireless charging of vehicle is to deviation detection device of alignment, is applied to the wireless charging of vehicle, includes: the device comprises a main controller, a light emitter driving module, a light emitter, a light sensor array, a measuring circuit and an alignment deviation calculating module; the output end of the main controller is connected with the input end of the light emitter driving module, the output end of the light emitter driving module is connected with the input end of the light emitter, the output end of the light sensor array is connected with the input end of the measuring circuit, the output end of the main controller is connected with the input end of the measuring circuit, the output end of the measuring circuit is connected with the input end of the alignment deviation calculating module, and the output end of the alignment deviation calculating module is connected with the input end of the main controller.
Further, the light emitter is mounted on a ground transmitting coil, the array of light sensors is mounted on a receiving coil of a chassis of the charging vehicle, or,
the light emitter is installed on a chassis of the charging vehicle, and the light sensor array is installed on a ground transmitting coil.
Further, the number of rows of the photo sensor array is 2m +1, the number of columns of the photo sensor array is 2n +1, where M and N are positive integers and represent the number of photo sensors.
Further, the light emitter is installed at the center position of the ground transmitting coil or the receiving coil of the charging vehicle chassis, and the light sensor array is installed at the center position of the receiving coil or the ground transmitting coil of the charging vehicle chassis, or
The light sensor array is arranged at the central position of the ground transmitting coil or the receiving coil of the charging vehicle chassis, and the light emitter is arranged at the central position of the receiving coil or the ground transmitting coil of the charging vehicle chassis.
Further, the light emitter comprises an infrared emitter or a laser emitter, and correspondingly, the light sensor array comprises an infrared sensor or a laser sensor.
Further, the shape of the photo sensor array is circular or polygonal.
Furthermore, the vehicle display system further comprises a display module, wherein the input end of the display module is connected with the output end of the main controller, and the output end of the display module is connected with the input end of the vehicle display system.
Furthermore, the vehicle-mounted audio system further comprises a sound prompt module, wherein the input end of the sound prompt module is connected with the output end of the main controller, and the output end of the sound prompt module is connected with the vehicle-mounted audio system.
In a second aspect, the present invention provides a method for detecting a vehicle wireless charging alignment deviation, including the following steps:
receiving a wireless charging alignment completion signal;
the optical transmitter transmits an optical signal;
the measuring circuit detects the output signal of the light sensor array and finds out the light sensor corresponding to the maximum value of the output signal;
and calculating the alignment deviation according to the light sensor corresponding to the maximum value of the output signal.
Further, the step of calculating the alignment deviation according to the light sensor corresponding to the maximum value of the output signal specifically includes:
the photo-sensor corresponding to the maximum value of the output signal is (i, j), where i and j are the number of rows and columns of the photo-sensor in the photo-sensor array, respectively,
the vehicle travel offset is: [ i- (M + 1) ]. Times.L;
the column offset of the vehicle is: [ i- (N + 1) ]. Times.L; wherein M and N are positive integers representing the number of the light sensors, and L is the central distance between two adjacent sensors of the light sensor array.
The invention has the beneficial effects that:
the main controller controls the light emitter driving module to emit light signals by the light emitter installed on the ground, the measuring circuit determines the position of the maximum output light sensor in the light sensor array by detecting the output value of the light sensor array installed on the chassis of the charging vehicle, and then the alignment deviation is calculated.
Drawings
Fig. 1 is a schematic structural diagram of an embodiment of a vehicle wireless charging alignment deviation detection apparatus according to the present invention;
FIG. 2 is a schematic diagram of an arrangement of light emitters and light sensors in an embodiment of the apparatus for detecting alignment deviation of wireless charging of a vehicle according to the present invention;
FIG. 3 is a schematic structural diagram of another embodiment of a wireless charging alignment deviation detection apparatus for a vehicle according to the present invention;
FIG. 4 is a flow chart of an embodiment of a method for detecting alignment deviation of a wireless charging device of a vehicle according to the present invention;
FIG. 5a is a schematic diagram of an array of optical sensors when a ground transmitting coil and a receiving coil are aligned according to an embodiment of the apparatus for detecting alignment deviation of wireless charging of a vehicle of the present invention;
fig. 5b is a schematic diagram of the optical sensor array when the ground transmitting coil and the receiving coil are not aligned in an embodiment of the wireless charging alignment deviation detecting apparatus for a vehicle according to the present invention.
Detailed Description
It should be noted that the embodiments and features of the embodiments in the present application may be combined with each other without conflict.
As shown in fig. 1, fig. 1 is a schematic structural diagram of an embodiment of a vehicle wireless charging alignment deviation detection apparatus in the present invention, including: the device comprises a main controller, a light emitter driving module, a light emitter, a light sensor array, a measuring circuit and an alignment deviation calculating module; the light emitter is installed on a ground transmitting coil, the light sensor array is installed on a receiving coil of a chassis of a charging vehicle, the output end of the main controller is connected with the input end of the light emitter driving module, the output end of the light emitter driving module is connected with the input end of the light emitter, the output end of the light sensor array is connected with the input end of the measuring circuit, the output end of the main controller is connected with the input end of the measuring circuit, the output end of the measuring circuit is connected with the input end of the alignment deviation calculating module, and the output end of the alignment deviation calculating module is connected with the input end of the main controller.
In other embodiments, the light emitter may also be mounted to a charge receiving coil on the chassis of the charging vehicle, and the array of light sensors mounted to a ground emitting coil.
After the vehicle finishes the alignment, the main controller controls the light emitter driving module to control the light emitter mounted on the ground to emit light signals, the measuring circuit determines the position of the maximum output light sensor in the light sensor array by detecting the output value of the light sensor array mounted on the chassis of the charging vehicle, and then the alignment deviation is calculated.
For convenience of calculation, as shown in fig. 2, in this embodiment, the optical transmitter 1 is installed at a center position of the ground transmitting coil 2, the photo sensor array 3 is installed at a center position of a receiving coil of the charging vehicle chassis 4, a number of rows of the photo sensor array is 2m +1, a number of columns of the photo sensor array is 2n +1, coordinates of the photo sensor located at an upper left corner are (1, 1), coordinates of the photo sensor located at a lower right corner are (2m +1, 2n + 1), where M and N are positive integers and represent the number of the photo sensors. At this time, the center position of the photo sensor is (M +1, N + 1) aligned with the photo emitter 1.
The light emitter 1 can also be installed at the center of the receiving coil of the charging vehicle chassis 4, and the light sensor array 3 is installed at the center of the ground transmitting coil 2, in the same manner.
As shown in fig. 5a, the shape of the photo-sensor array is rectangular, the row direction and the column direction of the photo-sensor array are respectively denoted as x direction and y direction, and the coordinate position of the photo-sensor with the maximum output is denoted as (x) m ，y n ) When the ground transmit coil and receive coil are aligned, M = M +1, n = n +1.
As shown in fig. 5b, when the ground transmitting coil and the ground receiving coil are not aligned, the offset value of the transmitting coil and the receiving coil can be calculated by the sum of the values of m and n and the interval between two adjacent photo sensors, i.e. the alignment deviation is obtained.
The light emitter includes, but is not limited to, an infrared emitter or a laser emitter, and the like, and correspondingly, the light sensor array includes, but is not limited to, an infrared sensor or a laser sensor.
The shape of the photo sensor array is not limited to a rectangle, and may also be a circle or other polygons, and the description is omitted in the same principle.
As shown in fig. 3, in another embodiment, the method further includes: the vehicle display system further comprises a display module and a sound prompt module, wherein the input end of the display module is connected with the output end of the main controller, and the output end of the display module is connected with the input end of the vehicle display system. The input end of the sound prompt module is connected with the output end of the main controller, and the output end of the sound prompt module is connected with the vehicle-mounted sound system.
The driver can check the specific situation of the deviation through the vehicle-mounted screen, and when the deviation is overlarge, the sound prompt module gives an alarm to the driver through the vehicle-mounted sound system.
As shown in fig. 4, fig. 4 is a flowchart illustrating a specific embodiment of a method for detecting alignment deviation of vehicle wireless charging according to the present invention, including the following steps:
s1, receiving a wireless charging alignment completion signal, and waiting for a vehicle parking alignment completion trigger signal until receiving a parking alignment completion signal;
s2, the light emitter sends an optical signal, the optical signal irradiates on the light sensor array, and the light sensor responds to the optical signal sent by the light emitter;
s3, a measuring circuit detects the output signal of the optical sensor array and finds out the optical sensor corresponding to the maximum value of the output signal;
s4, calculating the alignment deviation according to the light sensor corresponding to the maximum value of the output signal, recording the light sensor corresponding to the maximum value of the output signal as (i, j), wherein i and j are respectively the row number and the column number of the light sensor in the light sensor array,
the vehicle travel offset is: l is a radical of an alcohol x = [i－(M+1)]×L；
The column offset of the vehicle is: l is a radical of an alcohol y = [i－(N+1)]xL; wherein M and N are positive integers representing the number of the light sensors, L is the central distance between two adjacent sensors of the light sensor array, and the obtained alignment deviation is (L) x ，L y ) The sign of the deviation amount indicates the direction of the deviation and the absolute value indicates the distance of the deviation.
While the preferred embodiments of the present invention have been illustrated and described, it will be understood by those skilled in the art that various changes in form and details may be made therein without departing from the spirit and scope of the invention as defined by the appended claims.
Claims (8)
1. The utility model provides a wireless counterpoint deviation detection device that charges of vehicle, is applied to the wireless charging of vehicle, its characterized in that includes: the device comprises a main controller, a light emitter driving module, a light emitter, a light sensor array, a measuring circuit and an alignment deviation calculating module; the output end of the main controller is connected with the input end of the light emitter driving module, and the main controller is used for receiving a wireless charging alignment completion signal; the output end of the light emitter driving module is connected with the input end of the light emitter, and the main controller is further used for controlling the light emitter driving module to control the light emitter to emit light signals; the light sensor array consists of light sensors, the output end of the light sensor array is connected with the input end of the measuring circuit, the output end of the main controller is connected with the input end of the measuring circuit, the output end of the measuring circuit is connected with the input end of the alignment deviation calculating module, and the output end of the alignment deviation calculating module is connected with the input end of the main controller;
the measuring circuit is used for detecting an output signal of the optical sensor array responding to the optical signal and finding out an optical sensor corresponding to the maximum value of the output signal; the number of rows of the photo-sensor array is 2M +1, the number of columns of the photo-sensor array is 2N +1, wherein M and N are positive integers and represent the number of the photo-sensors;
the alignment deviation calculation module is configured to calculate an alignment deviation according to the light sensor corresponding to the maximum value of the output signal, note that the light sensor corresponding to the maximum value of the output signal is (i, j), where i and j are the number of rows and the number of columns of the light sensor in the light sensor array, respectively, and then the row offset of the vehicle is: [ i- (M + 1) ]. Times.L; the column offset of the vehicle is: [ j- (N + 1) ]. Times.L; wherein L is the center distance between two adjacent photosensors in the photosensor array.
2. The vehicle wireless charging alignment deviation detection device of claim 1, wherein the light emitter is installed on a ground transmitting coil, the light sensor array is installed on a receiving coil of a chassis of a charging vehicle, or,
the light emitter is installed on a charging receiving coil of a charging vehicle chassis, and the light sensor array is installed on a ground transmitting coil.
3. The apparatus as claimed in claim 2, wherein the optical transmitter is installed at a center position of the ground transmitting coil or the receiving coil of the chassis of the charging vehicle, and the optical sensor array is installed at a center position of the receiving coil or the ground transmitting coil of the chassis of the charging vehicle, or
The light sensor array is arranged at the central position of the ground transmitting coil or the receiving coil of the charging vehicle chassis, and the light emitter is arranged at the central position of the receiving coil or the ground transmitting coil of the charging vehicle chassis.
4. The vehicle wireless charging alignment deviation detection device of claim 1, wherein the light emitter comprises an infrared emitter or a laser emitter, and correspondingly, the light sensor array comprises an infrared sensor or a laser sensor.
5. The vehicle wireless charging alignment deviation detection device according to any one of claims 1 to 4, wherein the shape of the photo sensor array comprises a circle or a polygon.
6. The vehicle wireless charging alignment deviation detection device according to any one of claims 1 to 4, further comprising a display module, wherein an input end of the display module is connected with an output end of the main controller, and an output end of the display module is connected with an input end of a vehicle display system.
7. The vehicle wireless charging alignment deviation detection device according to any one of claims 1 to 4, further comprising a voice prompt module, wherein an input end of the voice prompt module is connected with an output end of the main controller, and an output end of the voice prompt module is connected with a vehicle-mounted sound system.
8. A vehicle wireless charging alignment deviation detection method is characterized by comprising the following steps:
receiving a wireless charging alignment completion signal;
the optical transmitter transmits an optical signal;
the measuring circuit detects the output signal of the light sensor array responding to the optical signal and finds out the light sensor corresponding to the maximum value of the output signal; the number of rows of the light sensor array is 2M +1, the number of columns of the light sensor array is 2N +1, wherein M and N are positive integers and represent the number of the light sensors;
calculating a registration deviation according to the light sensor corresponding to the maximum value of the output signal, and recording that the light sensor corresponding to the maximum value of the output signal is (i, j), where i and j are the number of rows and columns of the light sensor in the light sensor array, respectively, so that the row offset of the vehicle is: [ i- (M + 1) ]. Times.L; the column offset of the vehicle is: [ j- (N + 1) ]. Times.L; wherein L is the center distance between two adjacent photosensors in the photosensor array.
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|---|---|---|---|---|
| CN103412428A (en) * | 2013-07-24 | 2013-11-27 | 北京京东方光电科技有限公司 | Aligning system |
| CN205326830U (en) * | 2016-02-06 | 2016-06-22 | 青岛鲁渝能源科技有限公司 | Electric automobile is wireless charge location alignment device |
| CN108973737A (en) * | 2018-07-27 | 2018-12-11 | 汉能移动能源控股集团有限公司 | Electric vehicle wireless charging positioning device and positioning method thereof |
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| Publication number | Priority date | Publication date | Assignee | Title |
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| US9463706B2 (en) * | 2014-07-23 | 2016-10-11 | Ford Global Technologies, Llc | Infrared triangulation method for locating vehicles for hands-free electric vehicle charging |
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| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103412428A (en) * | 2013-07-24 | 2013-11-27 | 北京京东方光电科技有限公司 | Aligning system |
| CN205326830U (en) * | 2016-02-06 | 2016-06-22 | 青岛鲁渝能源科技有限公司 | Electric automobile is wireless charge location alignment device |
| CN108973737A (en) * | 2018-07-27 | 2018-12-11 | 汉能移动能源控股集团有限公司 | Electric vehicle wireless charging positioning device and positioning method thereof |
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