CN113895252A - Automobile wireless charging foreign matter detection system and method - Google Patents
Automobile wireless charging foreign matter detection system and method Download PDFInfo
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- CN113895252A CN113895252A CN202111122967.3A CN202111122967A CN113895252A CN 113895252 A CN113895252 A CN 113895252A CN 202111122967 A CN202111122967 A CN 202111122967A CN 113895252 A CN113895252 A CN 113895252A
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B60—VEHICLES IN GENERAL
- B60L—PROPULSION OF ELECTRICALLY-PROPELLED VEHICLES; SUPPLYING ELECTRIC POWER FOR AUXILIARY EQUIPMENT OF ELECTRICALLY-PROPELLED VEHICLES; ELECTRODYNAMIC BRAKE SYSTEMS FOR VEHICLES IN GENERAL; MAGNETIC SUSPENSION OR LEVITATION FOR VEHICLES; MONITORING OPERATING VARIABLES OF ELECTRICALLY-PROPELLED VEHICLES; ELECTRIC SAFETY DEVICES FOR ELECTRICALLY-PROPELLED VEHICLES
- B60L53/00—Methods of charging batteries, specially adapted for electric vehicles; Charging stations or on-board charging equipment therefor; Exchange of energy storage elements in electric vehicles
- B60L53/10—Methods of charging batteries, specially adapted for electric vehicles; Charging stations or on-board charging equipment therefor; Exchange of energy storage elements in electric vehicles characterised by the energy transfer between the charging station and the vehicle
- B60L53/12—Inductive energy transfer
- B60L53/124—Detection or removal of foreign bodies
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- H—ELECTRICITY
- H02—GENERATION; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
- H02J—CIRCUIT ARRANGEMENTS OR SYSTEMS FOR SUPPLYING OR DISTRIBUTING ELECTRIC POWER; SYSTEMS FOR STORING ELECTRIC ENERGY
- H02J50/00—Circuit arrangements or systems for wireless supply or distribution of electric power
- H02J50/10—Circuit arrangements or systems for wireless supply or distribution of electric power using inductive coupling
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- H—ELECTRICITY
- H02—GENERATION; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
- H02J—CIRCUIT ARRANGEMENTS OR SYSTEMS FOR SUPPLYING OR DISTRIBUTING ELECTRIC POWER; SYSTEMS FOR STORING ELECTRIC ENERGY
- H02J50/00—Circuit arrangements or systems for wireless supply or distribution of electric power
- H02J50/60—Circuit arrangements or systems for wireless supply or distribution of electric power responsive to the presence of foreign objects, e.g. detection of living beings
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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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- Engineering & Computer Science (AREA)
- Power Engineering (AREA)
- Computer Networks & Wireless Communication (AREA)
- Transportation (AREA)
- Mechanical Engineering (AREA)
- Geophysics And Detection Of Objects (AREA)
Abstract
The invention provides a wireless charging foreign matter detection system for an automobile, which comprises: the ground transmitting plate is used for transmitting an alternating magnetic field; the vehicle-mounted receiving board is used for receiving the alternating magnetic field and carrying out coupling charging; a foreign object detection module comprising: the infrared array sensors are used for detecting the real-time temperature of a wireless charging area between the vehicle-mounted receiving plate and the ground transmitting plate; and the processing unit is used for receiving the real-time temperature and outputting a foreign matter detection result indicating that foreign matters exist in a detection area of the infrared array sensor with abnormal temperature when the real-time temperature indicates abnormal temperature. The system and the method have the advantages that the system and the method detect the foreign matters possibly existing between the ground end and the vehicle-mounted end, the surface of the ground transmitting plate is fully covered by using 9 infrared array sensors, the vehicle-mounted receiving plate is located at any position relative to the ground transmitting plate and can be fully covered for detection, and when the infrared array sensors detect the foreign matters, the wireless charging is stopped and the specific position of the foreign matters can be accurately positioned.
Description
Technical Field
The invention relates to the technical field of infrared detection, in particular to a system and a method for detecting wireless charging foreign matters of an automobile.
Background
The wireless charging system of car passes through the magnetic field coupling, transmit alternating magnetic field and couple to on-vehicle end at ground end, realize energy transmission, carry out the in-process that wirelessly charges at the car, if there is the foreign matter between ground end and the on-vehicle end, then the foreign matter probably is heated to higher temperature under alternating magnetic field's effect, the wireless charging process that may give the car brings the potential safety hazard, need accurately find the position of foreign matter when preventing that the overheated phenomenon of foreign matter or other abnormal phenomena from bringing the potential safety hazard, and in time find the foreign matter and clear up, wireless charging is carried out again.
Disclosure of Invention
Aiming at the problems in the prior art, the invention provides an automobile wireless charging foreign matter detection system, which comprises:
a ground transmitting plate for transmitting an alternating magnetic field;
the vehicle-mounted receiving plate is arranged at the automobile end and used for receiving the alternating magnetic field and carrying out coupling charging;
a foreign object detection module disposed at the vehicle end, the foreign object detection module comprising:
the infrared array sensors are respectively arranged on the vehicle-mounted receiving plate and used for detecting the real-time temperature of a wireless charging area formed between the vehicle-mounted receiving plate and the ground transmitting plate;
and the processing unit is respectively connected with each infrared array sensor and is used for receiving the real-time temperature detected by each infrared array sensor and outputting a foreign matter detection result indicating that foreign matters exist in a detection area of the infrared array sensor with abnormal temperature when the real-time temperature indicates abnormal temperature.
Preferably, the vehicle-mounted controller is respectively connected with the vehicle-mounted receiving board and the foreign matter detection module, and is used for controlling the vehicle-mounted receiving board to stop charging according to the foreign matter detection result.
Preferably, the number of the infrared array sensors is 9, each infrared array sensor is distributed in an array, and the detection area of each infrared array sensor corresponds to the upper, lower, left, right, center, upper left, upper right, lower left and lower right areas of the ground emission plate respectively.
Preferably, the central point of on-vehicle receiving board puts and is equipped with 1 infrared array sensor, the upper and lower, left and right, upper left and lower left and right position of infrared array sensor of central point puts all is equipped with 1 infrared array sensor to be array distribution.
Preferably, the detection area of the infrared array sensor at the central position is a square scanning area, and the detection areas of the infrared array sensors at the upper, lower, left, right, upper left, upper right, lower left and lower right positions are trapezoidal scanning areas so as to completely cover the wireless charging area.
Preferably, the bottom surface of the infrared array sensor of central point position with on-vehicle receiving board is parallel, the infrared array sensor of upper and lower, left and right, upper left and upper right and lower left and right position is kept away from the one side of on-vehicle receiving board respectively with the infrared array sensor of central point position is kept away from the one side of on-vehicle receiving board is an contained angle, the angle of contained angle is between 58 degrees to 59 degrees.
Preferably, the detection area of each infrared array sensor is divided into eight-by-eight pixel areas distributed in an array, and the real-time temperature output by each infrared array sensor is distributed in the corresponding pixel area, and then the processing unit includes:
the receiving subunit is used for receiving the real-time temperature output by each infrared array sensor;
and the processing subunit is connected with the receiving subunit and is used for comparing the real-time temperature corresponding to each pixel area with a preset standard temperature, obtaining a foreign matter detection result indicating that foreign matter exists when at least one real-time temperature is higher than the standard temperature, positioning the pixel area in which the abnormal real-time temperature is distributed correspondingly to serve as a specific position of the foreign matter, and containing and outputting the specific position of the foreign matter in the foreign matter detection result.
Preferably, the method for detecting the wireless charging foreign matters of the automobile is applied to the system for detecting the wireless charging foreign matters of the automobile, and specifically comprises the following steps:
step S1, the automobile wireless charging foreign matter detection system detects the real-time temperature of a wireless charging area formed between the vehicle-mounted receiving board and the ground transmitting board;
and step S2, when the real-time temperature indicates temperature abnormality, the wireless charging foreign matter detection system of the automobile outputs a foreign matter detection result indicating that foreign matter exists in a detection area of the infrared array sensor with the temperature abnormality.
Preferably, the step S2 further includes the step of controlling the vehicle-mounted receiving board to stop charging according to the foreign object detection result.
Preferably, the detection area of each infrared array sensor is divided into eight-by-eight pixel areas, and the real-time temperature output by each infrared array sensor is distributed in the corresponding pixel area, then in step S2, the wireless charging foreign object detection system of the vehicle compares each real-time temperature with a preset standard temperature, when at least one of the real-time temperatures is greater than the standard temperature, obtains a foreign object detection result indicating that a foreign object exists, locates the abnormal pixel area where the real-time temperature is distributed corresponding to as a specific position of the foreign object, and includes the specific position of the foreign object in the foreign object detection result and outputs the specific position.
The technical scheme has the following advantages or beneficial effects: the system and the method aim at detecting the foreign matters possibly existing between the ground end and the vehicle-mounted end, the surface of the ground transmitting plate is fully covered by using 9 infrared array sensors, the vehicle-mounted receiving plate of the automobile can be fully covered and detected at any position relative to the ground transmitting plate, and when the infrared array sensors detect the foreign matters, the wireless charging is stopped and the specific position of the foreign matters can be accurately positioned.
Drawings
FIG. 1 is a schematic diagram of the system in accordance with the preferred embodiment of the present invention;
FIG. 2 is a schematic view of an infrared array sensor according to a preferred embodiment of the present invention;
FIG. 3 is a schematic view of the installation position of the infrared array sensor before the deflection angle is reduced in the preferred embodiment of the present invention;
FIG. 4 is a schematic view of the scanning range of the infrared array sensor after the deflection angle is reduced according to the preferred embodiment of the present invention;
FIG. 5 is a schematic diagram of an 8 × 8 array scanned by an infrared array sensor according to a preferred embodiment of the present invention;
FIG. 6 is a schematic view of the scanning range of the infrared array sensor under the worst case in the preferred embodiment of the present invention;
FIG. 7 is a diagram illustrating the detection range of a centrally located infrared array sensor in accordance with a preferred embodiment of the present invention;
FIG. 8 is a diagram illustrating the detection range of the upper infrared array sensor according to the preferred embodiment of the present invention;
FIG. 9 is a diagram illustrating the detection range of the left position IR array sensor in accordance with the preferred embodiment of the present invention;
FIG. 10 is a diagram illustrating the detection range of the infrared array sensor at the lower book position in accordance with the preferred embodiment of the present invention;
FIG. 11 is a diagram illustrating the detection range of the infrared array sensor at the right position in accordance with the preferred embodiment of the present invention;
FIG. 12 is a diagram illustrating the detection range of the upper left infrared array sensor in accordance with the preferred embodiment of the present invention;
FIG. 13 is a diagram of the detection range of the upper right infrared array sensor in accordance with the preferred embodiment of the present invention;
FIG. 14 is a diagram illustrating the detection range of the infrared array sensor at the lower left position in accordance with the preferred embodiment of the present invention;
FIG. 15 is a diagram illustrating the detection range of the infrared array sensor at the lower right position in accordance with the preferred embodiment of the present invention;
FIG. 16 is a flowchart illustrating the steps of the method according to the preferred embodiment of the present invention.
Detailed Description
The invention is described in detail below with reference to the figures and specific embodiments. The present invention is not limited to the embodiment, and other embodiments may be included in the scope of the present invention as long as the gist of the present invention is satisfied.
In a preferred embodiment of the present invention, based on the above problems in the prior art, there is provided a wireless charging foreign object detection system for an automobile, as shown in fig. 1 and 2, including:
a ground transmitting plate 1 for transmitting an alternating magnetic field;
the vehicle-mounted receiving plate 2 is arranged at the automobile end and used for receiving the alternating magnetic field and carrying out coupling charging;
a foreign matter detection module 3, sets up in the car end, and foreign matter detection module 3 includes:
the infrared array sensors 31 are respectively arranged on the vehicle-mounted receiving plate 2 and are used for detecting the real-time temperature of a wireless charging area formed between the vehicle-mounted receiving plate 2 and the ground transmitting plate 1;
and the processing unit 32 is connected to each infrared array sensor 31, and is used for receiving the real-time temperature detected by each infrared array sensor 31, and outputting a foreign object detection result indicating that foreign objects exist in the detection area of the infrared array sensor 31 with abnormal temperature when the real-time temperature indicates abnormal temperature.
Specifically, in this embodiment, the foreign object may be heated due to eddy current loss under the action of the strong alternating magnetic field between the ground transmitting plate 1 and the vehicle-mounted receiving plate 2, at this time, the infrared array sensor 31 disposed on the vehicle-mounted receiving plate 2 measures the temperature of the surface of the ground transmitting plate 1, and when it is detected that the temperature of a certain part on the ground transmitting plate 1 is high, it is determined that the foreign object may exist at the position, and meanwhile, the wireless charging is stopped, and the specific position of the foreign object is accurately located.
Preferably, the length and width of the ground transmitting plate can be set to 840mm and 710mm, respectively, and the length and width of the vehicle-mounted receiving plate can be set to 384mm and 350mm, respectively.
In the preferred embodiment of the present invention, the vehicle-mounted controller 4 is further included, and is respectively connected to the vehicle-mounted receiving board 2 and the foreign object detection module 3, and is configured to control the vehicle-mounted receiving board 2 to stop charging according to the foreign object detection result.
In the preferred embodiment of the present invention, the number of the infrared array sensors 31 is 9, each infrared array sensor 31 is distributed in an array, and the detection area of each infrared array sensor 31 corresponds to the upper, lower, left, right, center, upper left, upper right, lower left and lower right areas of the ground emission plate, respectively.
In the preferred embodiment of the present invention, 1 infrared array sensor 31 is disposed at the center of the vehicle-mounted receiving board 2, and 1 infrared array sensor 31 is disposed at the upper, lower, left, right, upper left, upper right, lower left, and lower right positions of the infrared array sensor 31 at the center, so as to be distributed in an array.
Specifically, in this embodiment, the infrared array sensor 31 projects the scanning plane onto the surface of the ground emission plate 1 in a central projection manner, the maximum included angle of the projection light is 60 °, and the infrared array sensor 31 has digital output capability, can measure a temperature range of 0 ° to 80 ° by using a 3.3V or 5C driving voltage, uses a compact SMD package type, and is suitable for reflow mounting.
Specifically, in this embodiment, the infrared array sensors 31 determine whether a foreign object falls within the range of the alternating magnetic field by detecting the temperature distribution on the surface of the ground transmitting plate 1, and 9 infrared array sensors 31 are installed at the center of the bottom surface of the vehicle-mounted receiving plate 2, and the bottom surfaces of different infrared array sensors 31 and the ground transmitting plate are at different angles for scanning different areas, so as to realize the full coverage of the ground transmitting plate by the scanning light, and the full coverage characteristic is not affected by the vertical distance and the offset distance between the vehicle-mounted receiving plate 2 and the ground transmitting plate 1.
In a preferred embodiment of the present invention, the detection area of the infrared array sensor 31 at the central position is a square scanning area, and the detection areas of the infrared array sensors 31 at the upper, lower, left, right, upper left, upper right, lower left and lower right positions are trapezoidal scanning areas, so as to completely cover the wireless charging area.
In the preferred embodiment of the present invention, the bottom surface of the central infrared array sensor 31 is parallel to the vehicle-mounted receiving board 2, and the surfaces of the upper, lower, left, right, upper left, upper right, lower left and lower right infrared array sensors 31 far from the vehicle-mounted receiving board 2 respectively form an included angle with the surface of the central infrared array sensor 31 far from the vehicle-mounted receiving board 2, and the included angle is between 58 degrees and 59 degrees.
Specifically, in this embodiment, the maximum scanning angle of each infrared array sensor 31 is 60 °, 3 infrared array sensors 31 are installed side by side, and the included angles between the bottom surface of the sensor and the positive direction of the X axis are respectively set to 60 °, 0 °, and-60 °, at this time, when viewed from the direction of the X axis, the scanning range in the direction of the X axis can be fully covered, the scanning area of the infrared array sensor 31 at the middle position is a square, the scanning area of the infrared array sensor 31 at the edge position is an infinite isosceles trapezoid, it can be calculated that the base angle of the isosceles trapezoid is 67 °, in this state, a tiny scanning blind area exists between two infrared array sensors 31, and since the volume of the sensor itself is small relative to the ground emission plate, the deflection angle (deflection 58 ° to 59 °) of two infrared array sensors 31 at the periphery can be slightly reduced to eliminate the scanning blind area, meanwhile, other scanning areas are not affected, a schematic diagram of the infrared array sensor 31 before the deflection angle is reduced is shown in fig. 4, and a schematic diagram of the infrared array sensor 31 after the deflection angle is reduced is shown in fig. 5.
Specifically, in the present embodiment, the full coverage of the scanning area is independent of the vertical distance between the ground emitting board 1 and the vehicle-mounted receiving board 2, and the vertical distance only affects the size of the central square scanning area, but also affects the starting position of the trapezoidal scanning area, which are always coincident, so that the scanning range is not affected by the change of the vertical distance between the ground emitting board 1 and the vehicle-mounted receiving board 2.
Specifically, in this embodiment, when the ground emission board 1 and the vehicle-mounted receiving board 2 are not completely aligned, the infrared array sensors 31 can obtain an infinite trapezoidal scanning area, so that even though the misalignment offset between the ground emission board 1 and the vehicle-mounted receiving board 2 is large, a scanning blind area does not occur, and the 9 infrared array sensors 31 can still cover the surface of the ground emission board 1 in a full range, thereby realizing the detection of foreign matters at any position.
In a preferred embodiment of the present invention, as shown in fig. 6, the detection area of each infrared array sensor 31 is divided into eight-by-eight pixel areas and the real-time temperature output by each infrared array sensor 31 is distributed in the corresponding pixel area, and the processing unit 32 includes:
a receiving subunit 321, configured to receive the real-time temperature output by each infrared array sensor 31;
a processing subunit 322, connected to the receiving subunit 321, configured to compare the real-time temperature corresponding to each pixel region with a preset standard temperature, and when at least one of the real-time temperatures is greater than the standard temperature, obtain a foreign object detection result indicating that a foreign object exists, locate a pixel region where the abnormal real-time temperature is distributed correspondingly as a specific position of the foreign object, and include and output the specific position of the foreign object in the foreign object detection result.
Specifically, in this embodiment, as shown in fig. 7, since the trapezoidal scanning range of the infrared array sensor 31 is infinite, the accuracy of 8 × 8 array detection is deteriorated, in order to ensure the accuracy of 8 × 8 array detection, the infrared array sensor 31 needs to be downwardly shifted by a certain angle, the size of the 8 × 8 array grid is reduced, and accurate positioning is performed, since the trapezoidal scanning range is not infinite at this time, when the downward shifting installation angle of the infrared array sensor 31 is maximum, it is ensured that the scanning area covers the surface of the whole ground emission plate under the worst condition, when the worst condition occurs, the height between the ground emission plate 1 and the vehicle-mounted receiving plate 2 is 80mm, and the vehicle-mounted receiving plate 2 is farthest from the ground emission plate 1, and the included angle between the infrared array sensor 31 and the ground emission plate 1 at this time can be calculated: the installation included angles of the infrared array sensors 31 on the right side, the lower side and the right lower side and the plane of the ground emission plate 1 are 23.14 degrees, 21.22 degrees and 24.58 degrees respectively, and the size of the trapezoid is calculated at the moment: the farthest distance that right side, downside and right downside need trapezoidal is 665mm, 518mm, 842.9mm respectively, and the length of obtaining trapezoidal upper base and lower bottom by calculation is respectively: 100.46mm for a, 762.29mm for b, 99.09mm for a, 601.76mm for b, 101.58mm for a and 977.68mm for b.
Specifically, in the present embodiment, the detection region of the center position infrared array sensor 31 is shown in fig. 7, the detection region of the upper position infrared array sensor 31 is shown in fig. 8, the detection region of the left position infrared array sensor 31 is shown in fig. 9, the detection region of the lower position infrared array sensor 31 is shown in fig. 10, the detection region of the right position infrared array sensor 31 is shown in fig. 11, the detection region of the upper left position infrared array sensor 31 is shown in fig. 12, the detection region of the upper right position infrared array sensor 31 is shown in fig. 13, the detection region of the lower left position infrared array sensor 31 is shown in fig. 14, and the detection region of the lower right position infrared array sensor 31 is shown in fig. 15.
In a preferred embodiment of the present invention, a method for detecting a wireless charging foreign object in an automobile is applied to a system for detecting a wireless charging foreign object in an automobile, as shown in fig. 16, and specifically includes the following steps:
step S1, the automobile wireless charging foreign matter detection system detects the real-time temperature of a wireless charging area formed between the vehicle-mounted receiving board 2 and the ground transmitting board 1;
in step S2, when the real-time temperature indicates a temperature abnormality, the wireless charging foreign object detection system of the vehicle outputs a foreign object detection result indicating that a foreign object is present in the detection area of the infrared array sensor 31 having the temperature abnormality.
In a preferred embodiment of the present invention, step S2 further includes that the vehicle wireless charging foreign object detection system controls the vehicle-mounted receiving board 2 to stop charging according to the foreign object detection result.
In a preferred embodiment of the present invention, the detection area of each infrared array sensor 31 is divided into eight-by-eight pixel areas, and the real-time temperature output by each infrared array sensor 31 is distributed in the corresponding pixel area, then in step S2, the wireless charging foreign object detection system of the vehicle compares each real-time temperature with a preset standard temperature, when at least one of the real-time temperatures is greater than the standard temperature, obtains a foreign object detection result indicating the presence of a foreign object, locates the pixel area corresponding to the abnormal real-time temperature distribution as a specific position of the foreign object, and includes the specific position of the foreign object in the foreign object detection result and outputs the foreign object detection result.
While the invention has been described with reference to a preferred embodiment, it will be understood by those skilled in the art that various changes in form and detail may be made therein without departing from the spirit and scope of the invention.
Claims (10)
1. The utility model provides a wireless foreign matter detecting system that charges of car which characterized in that includes:
a ground transmitting plate for transmitting an alternating magnetic field;
the vehicle-mounted receiving plate is arranged at the automobile end and used for receiving the alternating magnetic field and carrying out coupling charging;
a foreign object detection module disposed at the vehicle end, the foreign object detection module comprising:
the infrared array sensors are respectively arranged on the vehicle-mounted receiving plate and used for detecting the real-time temperature of a wireless charging area formed between the vehicle-mounted receiving plate and the ground transmitting plate;
and the processing unit is respectively connected with each infrared array sensor and is used for receiving the real-time temperature detected by each infrared array sensor and outputting a foreign matter detection result indicating that foreign matters exist in a detection area of the infrared array sensor with abnormal temperature when the real-time temperature indicates abnormal temperature.
2. The wireless charging foreign object detection system of claim 1, further comprising a vehicle-mounted controller respectively connected to the vehicle-mounted receiving board and the foreign object detection module, for controlling the vehicle-mounted receiving board to stop charging according to the foreign object detection result.
3. The automobile wireless charging foreign matter detection system according to claim 1, wherein the number of the infrared array sensors is 9, each infrared array sensor is distributed in an array, and a detection area of each infrared array sensor corresponds to an upper area, a lower area, a left area, a right area, a center area, an upper left area, an upper right area, a lower left area and a lower right area of the ground emission plate.
4. The system for detecting foreign matters in wireless charging of an automobile according to claim 3, wherein 1 infrared array sensor is arranged at the center position of the vehicle-mounted receiving plate, and 1 infrared array sensor is arranged at the upper, lower, left, right, upper left, upper right, lower left and lower right positions of the infrared array sensor at the center position so as to be distributed in an array.
5. The system for detecting foreign matters in wireless charging of an automobile according to claim 3, wherein the detection area of the infrared array sensor at the center position is a square scanning area, and the detection areas of the infrared array sensors at the upper, lower, left, right, upper left, upper right, lower left and lower right positions are trapezoidal scanning areas so as to completely cover the wireless charging area.
6. The system according to claim 5, wherein the bottom surface of the infrared array sensor at the central position is parallel to the vehicle-mounted receiving board, one surface of the infrared array sensor at the upper, lower, left, right, upper left, upper right, lower left and lower right positions, which is far away from the vehicle-mounted receiving board, is respectively at an included angle with one surface of the infrared array sensor at the central position, which is far away from the vehicle-mounted receiving board, and the included angle is between 58 degrees and 59 degrees.
7. The system for detecting foreign matters during wireless charging of an automobile according to claim 1, wherein the detection area of each infrared array sensor is divided into pixel areas distributed in an eight-by-eight array, and the real-time temperature output by each infrared array sensor is distributed in the corresponding pixel area, the processing unit comprises:
the receiving subunit is used for receiving the real-time temperature output by each infrared array sensor;
and the processing subunit is connected with the receiving subunit and is used for comparing the real-time temperature corresponding to each pixel area with a preset standard temperature, obtaining a foreign matter detection result indicating that foreign matter exists when at least one real-time temperature is higher than the standard temperature, positioning the pixel area in which the abnormal real-time temperature is distributed correspondingly to serve as a specific position of the foreign matter, and containing and outputting the specific position of the foreign matter in the foreign matter detection result.
8. A wireless charging foreign object detection method for an automobile, which is applied to the wireless charging foreign object detection system for the automobile as claimed in any one of claims 1 to 7, and specifically comprises the following steps:
step S1, the automobile wireless charging foreign matter detection system detects the real-time temperature of a wireless charging area formed between the vehicle-mounted receiving board and the ground transmitting board;
and step S2, when the real-time temperature indicates temperature abnormality, the wireless charging foreign matter detection system of the automobile outputs a foreign matter detection result indicating that foreign matter exists in a detection area of the infrared array sensor with the temperature abnormality.
9. The method for detecting foreign matters during wireless charging of an automobile according to claim 8, wherein the step S2 further comprises the step of controlling the vehicle-mounted receiving board to stop charging according to the result of the detection of foreign matters.
10. The method as claimed in claim 8, wherein the detection area of each infrared array sensor is divided into eight-by-eight pixel areas and the real-time temperature output by each infrared array sensor is distributed in the corresponding pixel area, then in step S2, the wireless charging foreign object detection system compares each real-time temperature with a preset standard temperature, when at least one real-time temperature is greater than the standard temperature, obtains a foreign object detection result indicating the presence of a foreign object, locates the pixel area corresponding to the abnormal real-time temperature as a specific location of the foreign object, and includes the specific location of the foreign object in the foreign object detection result for outputting.
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Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| EP2503663A1 (en) * | 2011-03-23 | 2012-09-26 | Hanrim Postech Co., Ltd | Method for controlling power transmission in wireless power transmission apparatus and wireless power transmission apparatus thereof |
| CN103563215A (en) * | 2011-05-27 | 2014-02-05 | 日产自动车株式会社 | Non-contact power supply device |
| CN207426816U (en) * | 2017-11-03 | 2018-05-29 | 深圳威兹新能源科技有限公司 | A kind of detection device of metal foreign body for wireless charging |
| US20180239055A1 (en) * | 2017-02-23 | 2018-08-23 | Qualcomm Incorporated | Foreign object detection using infrared sensing |
| CN108539807A (en) * | 2017-03-03 | 2018-09-14 | 松下知识产权经营株式会社 | It can charge prompting method and can charge prompting system |
-
2021
- 2021-09-24 CN CN202111122967.3A patent/CN113895252A/en active Pending
Patent Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| EP2503663A1 (en) * | 2011-03-23 | 2012-09-26 | Hanrim Postech Co., Ltd | Method for controlling power transmission in wireless power transmission apparatus and wireless power transmission apparatus thereof |
| CN103563215A (en) * | 2011-05-27 | 2014-02-05 | 日产自动车株式会社 | Non-contact power supply device |
| US20180239055A1 (en) * | 2017-02-23 | 2018-08-23 | Qualcomm Incorporated | Foreign object detection using infrared sensing |
| CN108539807A (en) * | 2017-03-03 | 2018-09-14 | 松下知识产权经营株式会社 | It can charge prompting method and can charge prompting system |
| CN207426816U (en) * | 2017-11-03 | 2018-05-29 | 深圳威兹新能源科技有限公司 | A kind of detection device of metal foreign body for wireless charging |
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