Sensor wiring arrangement structure for wireless charging foreign matter detection device

Abstract

The utility model provides a sensor wiring arrangement structure for a wireless charging foreign matter detection device, which can accurately position the corresponding position of a foreign matter and enable the foreign matter to be discharged conveniently and quickly. The circuit board comprises a circuit board; the sensors are arranged in an array; a plurality of sensor arrays are arranged on the circuit board, the sensors are used for sensing the temperature or the pressure of a corresponding area, when the temperature or the pressure exceeds a set value, it is judged that foreign matter exists, the sensors are divided into transverse rows and longitudinal columns, the sensors corresponding to the transverse rows are connected in series or in parallel to form a transverse signal line for output, and the longitudinal columns are connected in parallel to form a longitudinal signal line for output. All the transverse signal lines are gathered into a transverse leading-out flat cable, the transverse leading-out flat cable is connected to a controller, the sensors corresponding to each longitudinal column are respectively connected in series or in parallel to form a longitudinal signal line for output, all the longitudinal signal lines are gathered into a longitudinal leading-out flat cable, and the longitudinal leading-out flat cable is connected to the controller.

Description

Technical Field

[0001] This utility model relates to the technical field of wireless charging equipment, specifically to a sensor wiring arrangement structure for a wireless charging foreign object detection device. Background Technology

[0002] During wireless charging, it is necessary to detect whether there are foreign objects on the surface of the wireless charging transmitter or receiver to ensure the safe and reliable operation of the wireless charging process. Existing foreign object detection devices are generally a combination of circuit boards and array sensors. The circuit board is a flexible or rigid structure. Because the sensors are arranged relatively densely, the number of lead-out ribbon cables at the last lead end of the circuit board corresponding to the array sensors is much smaller than the number of sensors. Each lead-out ribbon cable leads out the signals of multiple series sensors at the corresponding position. Therefore, when performing foreign object detection, only the corresponding position of a set of series sensors corresponding to the abnormal lead-out ribbon cable can be roughly detected, and the exact location of the foreign object cannot be obtained. When removing foreign objects, it is necessary to thoroughly check the sensor positions in the series area, resulting in low foreign object removal efficiency. Utility Model Content

[0003] To address the aforementioned issues, this invention provides a sensor wiring arrangement structure for a wireless charging foreign object detection device, which can accurately locate the corresponding position of foreign objects, making foreign object removal convenient and quick.

[0004] A sensor wiring arrangement structure for a wireless charging foreign object detection device, characterized in that it comprises:

[0005] Circuit board;

[0006] And several sensors arranged in an array;

[0007] Several sensor arrays are arranged on the circuit board. The sensors are used to sense the temperature or pressure of the corresponding surface area. The sensors are divided into horizontal rows and vertical columns. The sensors corresponding to each horizontal row are connected in series or in parallel to form a horizontal signal line output. All horizontal signal lines are gathered into a horizontal lead-out ribbon cable, which is connected to the controller. The sensors corresponding to each vertical column are connected in series or in parallel to form a vertical signal line output. All vertical signal lines are gathered into a vertical lead-out ribbon cable, which is connected to the controller.

[0008] Its further features are:

[0009] The circuit board has a rectangular area, and N*M sensors are arranged in N horizontal rows and M vertical columns on the circuit board. N horizontal signal lines converge into a horizontal lead-out ribbon cable, and M vertical signal lines converge into a vertical lead-out ribbon cable.

[0010] N horizontal signal lines are arranged in the same height area, and M vertical signal lines are arranged in another height area. This ensures that there are no convergence points between the horizontal and vertical signal lines, thus guaranteeing stable and reliable signal transmission.

[0011] Preferably, N horizontal signal lines are arranged on the upper surface of the circuit board, and M vertical signal lines are arranged on the lower surface of the circuit board.

[0012] Alternatively, N horizontal signal lines can be arranged on the lower surface of the circuit board, and M vertical signal lines can be arranged on the upper surface of the circuit board.

[0013] After adopting the above technical solution, the controller scans the data of each sensor sequentially along the XY axis coordinate system formed by the combination of horizontal and vertical signal lines during each inspection. When there is an abnormality in the sensor data at the corresponding position, the position of the foreign object is accurately located as the position of the corresponding sensor. The foreign object may exist in one or more places. Through the wiring arrangement structure of the above sensors, data is scanned sequentially one by one, and the precise position of all foreign objects is reliably obtained. It can accurately locate the corresponding position of the foreign object, making the discharge of foreign objects convenient and quick. Attached Figure Description

[0014] Figure 1 This is a schematic diagram of a specific embodiment of the present utility model (solid lines represent the upper surface and dashed lines represent the lower surface).

[0015] The names corresponding to the serial numbers in the diagram are as follows:

[0016] Circuit board 10, sensor 20

[0017] Horizontal signal line 1, Horizontal lead-out ribbon cable 2, Vertical signal line 3, Vertical lead-out ribbon cable 4. Detailed Implementation

[0018] A sensor wiring layout structure for a wireless charging foreign object detection device, see Figure 1 It includes: a circuit board 10 and several arrayed sensors 20;

[0019] A plurality of sensors 20 are arrayed on the circuit board 10. The sensors 20 are used to sense the temperature or pressure of the corresponding surface area. When the temperature or pressure exceeds the set value, it is determined that there is a foreign object. The sensors 20 are divided into horizontal rows and vertical columns. The sensors 20 corresponding to each horizontal row are connected in series or in parallel to form a horizontal signal line 1 for output. All horizontal signal lines 1 are gathered into a horizontal lead-out line 2. The horizontal lead-out line 2 is connected to the controller. The sensors 20 corresponding to each vertical column are connected in series or in parallel to form a vertical signal line 3 for output. All vertical signal lines 3 are gathered into a vertical lead-out line 4. The vertical lead-out line 4 is connected to the controller.

[0020] In a specific embodiment, the area of ​​the circuit board 10 is rectangular, and 6*8 sensors are arrayed on the circuit board 10 in 6 horizontal rows and 6 vertical columns. The 6 horizontal signal lines 1 converge into a horizontal lead-out ribbon cable 2, and the 8 vertical signal lines 3 converge into a vertical lead-out ribbon cable 4.

[0021] Six horizontal signal lines are arranged in the same height area, and eight vertical signal lines are arranged in another height area. This ensures that there are no convergence points between the horizontal and vertical signal lines, thus guaranteeing stable and reliable signal transmission.

[0022] In practice, six horizontal signal lines are arranged on the lower surface of the circuit board, and eight vertical signal lines are arranged on the upper surface of the circuit board.

[0023] Its working principle is as follows: During each inspection, the controller sequentially scans the data of each sensor along the XY axis coordinate system formed by the combination of horizontal and vertical signal lines. When there is an abnormality in the sensor data at the corresponding position, the position of the foreign object is accurately located as the position of the corresponding sensor. The foreign object may exist in one or more places. Through the wiring arrangement structure of the above sensors, the data is scanned sequentially one by one, and the precise position of all foreign objects is reliably obtained. It can accurately locate the corresponding position of the foreign object, making the removal of foreign objects convenient and quick.

[0024] It will be apparent to those skilled in the art that this invention is not limited to the details of the exemplary embodiments described above, and that it can be implemented in other specific forms without departing from the spirit or essential characteristics of this invention. Therefore, the embodiments should be considered illustrative and non-limiting in all respects, and the scope of this invention is defined by the appended claims rather than the foregoing description. Thus, it is intended that all variations falling within the meaning and scope of equivalents of the claims be included within this invention. No reference numerals in the claims should be construed as limiting the scope of the claims.

[0025] Furthermore, it should be understood that although this specification describes embodiments, not every embodiment contains only one independent technical solution. This narrative style is merely for clarity. Those skilled in the art should consider the specification as a whole, and the technical solutions in each embodiment can also be appropriately combined to form other embodiments that can be understood by those skilled in the art.

Claims

1. A sensor wiring arrangement structure for a wireless charging foreign object detection device, characterized in that: It includes: Circuit board; And several sensors arranged in an array; Several sensor arrays are arranged on the circuit board. The sensors are used to sense the temperature or pressure of the corresponding surface area. When the temperature or pressure exceeds the set value, it is determined that there is a foreign object. The sensors are divided into horizontal rows and vertical columns. The sensors corresponding to each horizontal row are connected in series or in parallel to form a horizontal signal line output. All horizontal signal lines are gathered into a horizontal lead-out line, which is connected to the controller. The sensors corresponding to each vertical column are connected in series or in parallel to form a vertical signal line output. All vertical signal lines are gathered into a vertical lead-out line, which is connected to the controller.

2. The sensor wiring arrangement structure for a wireless charging foreign object detection device according to claim 1, characterized in that: N horizontal signal lines are arranged in the same height area, and M vertical signal lines are arranged in another height area, ensuring that there are no convergence points between the horizontal and vertical signal lines.

3. The sensor wiring arrangement structure for a wireless charging foreign object detection device according to claim 2, characterized in that: N horizontal signal lines are arranged on the upper surface of the circuit board, and M vertical signal lines are arranged on the lower surface of the circuit board.

4. The sensor wiring arrangement structure for a wireless charging foreign object detection device according to claim 2, characterized in that: N horizontal signal lines are arranged on the lower surface of the circuit board, and M vertical signal lines are arranged on the upper surface of the circuit board.

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