Wireless charging positioning method and system based on position memory

Abstract

The invention discloses a wireless charging positioning method and system based on position memory. The wireless charging positioning method based on position memory comprises the following steps: receiving a preset instruction; based on the preset instruction, a transmitting coil of the charger is adjusted to a preset position, so that the transmitting coil of the charger is coupled with a receiving coil of to-be-charged equipment and wireless charging is carried out, and the preset position is obtained through a self-learning mode. Therefore, the wireless charging positioning method based on the position memory can quickly determine the optimal coupling position of the transmitting coil according to the'memory ', and does not need to frequently perform position matching on the receiving coil and the transmitting coil.

Description

Technical Field

[0001] The present application relates to wireless charging positioning, and in particular to a wireless charging positioning method and system based on position memory. Background Art

[0002] Wireless charging achieves contactless energy transmission through electromagnetic induction, greatly improving user convenience and safety. However, existing technologies still have significant shortcomings in practical applications.

[0003] Specifically, since wireless charging relies on the effective coupling between the transmitting coil (TX) and the receiving coil (RX), and the effective coupling between the two is greatly affected by the relative position relationship between the two, the charging efficiency and stability are greatly affected by the relative position of the two.

[0004] The position, size, and shape of the receiving coils of wireless charging devices on the market (such as mobile phones, tablets, smart wearables, etc.) vary greatly, making it difficult for traditional fixed transmitting coil designs to take into account all terminal devices. If they cannot adapt to the characteristics of the device, it will cause energy waste and unstable charging.

[0005] For example, the dimensions and relative positions of the receiving coils (most mobile phones with wireless charging capabilities have the receiving coil positioned in the center, while some phones position the receiving coil lower to avoid the camera) vary across brands and within the same brand. Consequently, during use, the transmitting coil (TX) and receiving coil (RX) cannot couple well (coupling is better when the overlapping area between the transmitting coil and the receiving coil is high), resulting in poor overall system charging efficiency. This causes the transmitting coil (TX) and receiving coil (RX) to heat up significantly, and the entire charging time is correspondingly prolonged.

[0006] Currently, the industry mainly adopts two solutions to solve the above problems: 1. Adding a receiving coil (RX) position detection circuit (for example, a planar array coil) to detect the position of the receiving coil (RX) and drive the transmitting coil (TX) to the detected sensing position through a motor; 2. Adding more transmitting coils (TX), arranging them in an array, and identifying which transmitting coil (TX) the receiving coil (RX) is best coupled to through polling.

[0007] However, adding a receiving coil (RX) position detection circuit complicates the wireless charger's structure and increases costs. Furthermore, each time a device to be charged is placed on the wireless charger, the receiving coil (RX) position detection circuit must detect the position of the device's receiving coil (RX). Even if the same device is placed on the wireless charger, the receiving coil (RX) position detection circuit must re-detect the position of the device's receiving coil (RX). This frequent motor movement introduces noise and durability issues.

[0008] Adding more transmitting coils (TX) requires reserving more coil arrangement space in the wireless charger and setting up components to prevent interference between the receiving coils, which increases the size of the wireless charger, makes the structure more complex, and increases the cost. In addition, each time the device to be charged is placed on the wireless charger, the receiving coil (RX) needs to be matched through polling. Even if the same device to be charged is placed on the wireless charger, the receiving coil (RX) still needs to be matched through polling again.

[0009] Therefore, a new wireless charging positioning solution is urgently needed. Summary of the Invention

[0010] One advantage of the present application is that it provides a wireless charging positioning method and system based on position memory, wherein the wireless charging positioning method based on position memory can quickly determine the optimal coupling position of the transmitting coil according to the "memory" without the need to frequently match the positions of the receiving coil and the transmitting coil.

[0011] According to one aspect of the present application, a wireless charging positioning method based on position memory is provided, which includes: Receive preset instructions; Based on the preset instruction, the transmitting coil of the charger is adjusted to a preset position so that the transmitting coil of the charger and the receiving coil of the device to be charged are coupled and wireless charging is performed, wherein the preset position is obtained through a self-learning mode.

[0012] In one embodiment of the wireless charging positioning method based on position memory according to the present application, adjusting the transmitting coil of the charger to a preset position based on the preset instruction includes: Get the real-time position of the transmitting coil; generating a motor drive signal based on a comparison between the real-time position and the preset position; The motor is driven by the motor driving signal to drive the transmitting coil to the preset position.

[0013] In one embodiment of the wireless charging positioning method based on position memory according to the present application, the preset instruction is bound to a local input event and / or an external signal input event.

[0014] In one embodiment of the wireless charging positioning method based on position memory described in the present application, the preset position is obtained through a self-learning mode, including: adjusting the position of the charger's transmitting coil, and determining the coupling degree between the transmitting coil and the test receiving coil of the test device to be charged when the transmitting coil is in various positions to obtain a coupling degree set; and determining the preset position based on the coupling degree set.

[0015] In one embodiment of the position memory-based wireless charging positioning method described in the present application, determining the degree of coupling between the transmitting coil and the test receiving coil of the test device to be charged when the transmitting coil is in various positions to obtain a coupling degree set includes: obtaining the energy intensity received by the test receiving coil when the transmitting coil is in various positions; and determining the degree of coupling between the transmitting coil and the receiving coil when the transmitting coil is in various positions based on the energy intensity to obtain a coupling degree set.

[0016] In one embodiment of the wireless charging positioning method based on position memory described in the present application, determining the degree of coupling between the transmitting coil and the test receiving coil of the test device to be charged when the transmitting coil is in various positions to obtain a coupling degree set includes: obtaining a power loss value of the receiving power of the test receiving coil relative to the transmitting power of the transmitting coil when the transmitting coil is in various positions; and determining the degree of coupling between the transmitting coil and the receiving coil when the transmitting coil is in various positions based on the power loss value to obtain a coupling degree set.

[0017] In one embodiment of the position memory-based wireless charging positioning method described in the present application, determining the degree of coupling between the transmitting coil and a test receiving coil of a test device to be charged when the transmitting coil is in various positions to obtain a coupling degree set includes: obtaining energy intensity received by the test receiving coil when the transmitting coil is in various positions; determining the degree of coupling between the transmitting coil and the receiving coil when the transmitting coil is in various positions based on the energy intensity to obtain a preliminary coupling degree set; determining a preliminary optimal coupling position of the transmitting coil based on the preliminary coupling degree set, wherein the energy intensity received by the test receiving coil is the highest when the transmitting coil is in the preliminary optimal coupling position; adjusting the transmitting coil to the preliminary optimal coupling position; adjusting the position of the transmitting coil again, and obtaining power loss values of the received power of the test receiving coil relative to the transmitted power of the transmitting coil when the transmitting coil is in various positions; and determining the degree of coupling between the transmitting coil and the receiving coil when the transmitting coil is in various positions based on the power loss values to obtain a coupling degree set.

[0018] According to another aspect of the present application, the present application also proposes a wireless charging positioning system based on position memory, characterized in that it includes a processor, and the processor includes: An instruction receiving module, used for receiving preset instructions; A position control module is used to adjust the transmitter coil of the charger to a preset position based on the preset instruction so that the transmitter coil of the charger and the receiving coil of the device to be charged are coupled and wireless charging is performed, wherein the preset position is obtained through a self-learning mode.

[0019] Further objectives and advantages of the present application will be fully reflected through understanding of the following description and drawings. BRIEF DESCRIPTION OF THE DRAWINGS

[0020] The above and other purposes, features, and advantages of the present application will become more apparent through a more detailed description of the embodiments of the present application in conjunction with the accompanying drawings. The accompanying drawings are intended to provide a further understanding of the embodiments of the present application and constitute a part of the specification. Together with the embodiments of the present application, they are used to explain the present application and do not constitute a limitation of the present application. In the drawings, the same reference numerals generally represent the same components or steps.

[0021] Figure 1 The figure illustrates a flow chart of a wireless charging positioning method based on position memory according to an embodiment of the present application.

[0022] Figure 2 FIG2 illustrates a flow chart of step S120 of a wireless charging positioning method based on position memory according to an embodiment of the present application.

[0023] Figure 3 The figure illustrates a flow chart of obtaining the preset position through a self-learning mode in a wireless charging positioning method based on position memory according to an embodiment of the present application.

[0024] Figure 4 FIG2 illustrates a flowchart of step S101 of an implementation method of obtaining the preset position through a self-learning mode in a wireless charging positioning method based on position memory according to an embodiment of the present application.

[0025] Figure 5 FIG2 illustrates a flowchart of step S101 of another implementation of the wireless charging positioning method based on position memory according to an embodiment of the present application, in which the preset position is acquired through a self-learning mode.

[0026] Figure 6 FIG2 illustrates a flowchart of step S101 of another implementation of the wireless charging positioning method based on position memory according to an embodiment of the present application, in which the preset position is acquired through a self-learning mode.

[0027] Figure 7 The figure illustrates a flowchart of an example of obtaining the preset position through a self-learning mode in a wireless charging positioning method based on position memory according to an embodiment of the present application.

[0028] Figure 8The figure shows a structural block diagram of a wireless charging positioning system based on position memory according to an embodiment of the present application. DETAILED DESCRIPTION

[0029] Below, the exemplary embodiments according to the present application will be described in detail with reference to the accompanying drawings. Obviously, the exemplary embodiments described are only part of the embodiments of the present application, rather than all the embodiments of the present application, and it should be understood that the present application is not limited to the exemplary embodiments described herein.

[0030] It is understood that the term "a" should be understood as "at least one" or "one or more", that is, in one embodiment, the number of an element may be one, while in another embodiment, the number of the element may be multiple, and the term "a" should not be understood as limiting the number. "Multiple" means greater than or equal to two.

[0031] Although ordinal numbers such as "first," "second," and the like will be used to describe various components, these are not intended to limit those components. The terms are used solely to distinguish one component from another. For example, a first component could be referred to as a second component, and similarly, a second component could be referred to as a first component without departing from the teachings of the present disclosure. As used herein, the term "and / or" includes any and all combinations of one or more of the associated listed items.

[0032] The terms used herein are for the purpose of describing various embodiments only and are not intended to be limiting. As used herein, the singular is intended to include the plural, unless the context clearly indicates otherwise. It will also be understood that the terms "including" and / or "having" when used in this specification specify the presence of a stated feature, number, operation, component, element, or combination thereof, and do not preclude the presence or addition of one or more other features, numbers, operations, components, elements, or combinations thereof.

[0033] As mentioned above, the position, size, and shape of the receiving coils of wireless charging devices on the market (such as mobile phones, tablets, smart wearables, etc.) vary greatly, making it difficult for traditional fixed transmitting coil designs to take into account all terminal devices. If they cannot adapt to the characteristics of the device, it will cause energy waste and unstable charging.

[0034] Currently, the industry mainly adopts two solutions to solve the above problems: 1. Adding a receiving coil (RX) position detection circuit (for example, a planar array coil) to detect the position of the receiving coil (RX) and drive the transmitting coil (TX) to the detected sensing position through a motor; 2. Adding more transmitting coils (TX), arranging them in an array, and identifying which transmitting coil (TX) the receiving coil (RX) is best coupled to through polling.

[0035] However, adding a receiving coil (RX) position detection circuit complicates the wireless charger's structure and increases costs. Furthermore, each time a device to be charged is placed on the wireless charger, the receiving coil (RX) position detection circuit must detect the position of the device's receiving coil (RX). Even if the same device is placed on the wireless charger, the receiving coil (RX) position detection circuit must re-detect the position of the device's receiving coil (RX). This frequent motor movement introduces noise and durability issues.

[0036] Adding more transmitting coils (TX) requires reserving more coil arrangement space in the wireless charger and setting up components to prevent interference between the receiving coils, which increases the size of the wireless charger, makes the structure more complex, and increases the cost. In addition, each time the device to be charged is placed on the wireless charger, the receiving coil (RX) needs to be matched through polling. Even if the same device to be charged is placed on the wireless charger, the receiving coil (RX) still needs to be matched through polling again.

[0037] Based on this, the present application proposes a novel wireless charging positioning method that uses a self-learning mode to test and record the optimal coupling positions of a transmitting coil with different devices to be charged, and further constructs a charging coupling position database. Accordingly, the charging coupling position database records the optimal coupling positions of the transmitting coil with different devices to be charged. This allows a user or a charger to select and adjust the transmitting coil to the corresponding optimal coupling position based on the identity information of the device to be charged (e.g., model, device owner, etc.), eliminating the need to continuously adjust the relative position of the current receiving coil of the device to be charged and the transmitting coil of the wireless charger to determine the optimal coupling position of the transmitting coil. For example, when a user is charging a first device to be charged, the self-learning mode test results indicate that the optimal coupling position of the transmitting coil with the first device to be charged is a first preset position. An input component (e.g., a key, voice receiver, touch screen, etc.) can be used to issue a transmitting coil position adjustment command to move the transmitting coil to the first preset position.

[0038] Compared with the solution of adding a receiving coil position detection circuit, the wireless charging positioning method of the present application can avoid frequent operation of the motor, thereby reducing the noise and energy consumption caused by frequent operation of the motor and the loss of the motor structure, and the charging response speed is faster, without mechanical action time; compared with the solution of adding a transmitting coil, the charging response speed is faster, without mechanical action time and coil polling time. The comprehensive cost and structural complexity of the wireless charging positioning method of the present application are low, and there is no need to add additional receiving coil position detection circuits and more transmitting coils and coil switching circuits. In the process of determining the optimal coupling position through the self-learning mode, the wireless charging positioning method of the present application can repeatedly detect and accurately identify the position of the receiving coil of the device to be charged, thereby improving the accuracy of the optimal coupling position and making the charging efficiency relatively better.

[0039] Accordingly, if Figures 1 to 7 As shown, the wireless charging positioning method based on position memory according to the embodiment of the present application is explained. Figure 1 As shown, the wireless charging positioning method based on position memory includes the following steps: S110: receiving a preset instruction; S120, adjusting the transmitting coil of the charger to a preset position based on the preset instruction, so that the transmitting coil of the charger and the receiving coil of the device to be charged are coupled and wireless charging is performed, wherein the preset position is obtained through a self-learning mode.

[0040] Specifically, in step S110, a preset instruction is received. Specifically, the preset instruction is bound to a local input event and / or an external signal input event. Local input events include, but are not limited to, key events, touchscreen touch events, and fingerprint input events; and external signal input events include, but are not limited to, voice input events, wireless signal input events, wired signal input events, interface signal input events, and image signal input events. A key event refers to the actuation of a preset key. A touchscreen touch event refers to the touching of a preset area of the touchscreen. A fingerprint input event refers to the input of a preset fingerprint. The preset instruction is used to adjust the position of the charger's transmitting coil. An external signal input event refers to the transmission of a control signal external to the charger to the charger, for example, a control signal, voice signal, or image signal from an external device such as a mobile phone or remote control. A voice input event refers to the input of a preset voice signal to the charger; a wireless signal input event refers to the input of a wireless signal to the charger; and an image signal input event refers to the input of an image signal to the charger. A wired signal input event refers to the input of a signal to the charger via a connecting cable. An interface signal input event refers to the input of a signal to the charger via an interface. Wireless signals include infrared signals, Bluetooth signals, etc. Wired signals include CAN signals, LIN signals, RS485 signals, RS232 signals, Ethernet signals, etc. Image signals include static image signals and dynamic signals, such as preset gesture images and preset expression images.

[0041] In one embodiment of the present application, the preset instructions include at least a first preset instruction and a second preset instruction. In some embodiments of the present application, the preset instructions further include a third preset instruction, a fourth preset instruction, and the like. The first preset instruction is used to adjust the charger's transmitting coil to a first preset position. The second preset instruction is used to adjust the charger's transmitting coil to a second preset position. The third preset instruction is used to adjust the charger's transmitting coil to a third preset position. The fourth preset instruction is used to adjust the charger's transmitting coil to a fourth preset position.

[0042] For example, in one example of the present application, when a user charges a first device to be charged, based on the test results memorized in the self-learning mode, the user knows that the optimal coupling position between the charger's transmitting coil and the first device to be charged is a first preset position, and presses a first button. This key event, i.e., the event that the first preset button is actuated, is bound to a first preset instruction. When the first button is actuated, the charger's controller receives the first preset instruction.

[0043] When a user charges a second device, the user determines, based on the test results memorized in the self-learning mode, that the optimal coupling position between the charger's transmitting coil and the second device is a second preset position. The user then presses a second button. This key press event, i.e., the second preset button actuation event, is bound to a second preset instruction. When the second button is actuated, the charger's controller receives the second preset instruction.

[0044] When a user charges a third device, the user determines, based on the test results memorized in the self-learning mode, that the optimal coupling position between the charger's transmitting coil and the third device is a third preset position. The user then presses a third button. This key press event, i.e., the third preset button actuation event, is bound to a third preset instruction. When the third button is actuated, the charger's controller receives the third preset instruction.

[0045] In another example of the present application, when a user charges a first device to be charged, the user determines, based on test results stored in the self-learning mode, that the optimal coupling position between the charger's transmitting coil and the first device to be charged is a first preset position. The user then inputs a first preset voice message, for example, "Move the transmitting coil to the first preset position." This voice input event, i.e., the first preset voice message input event, is bound to a first preset instruction. When the first preset voice message is input, the charger's controller receives the first preset instruction.

[0046] When a user charges a second device to be charged, the user determines, based on test results from the self-learning mode, that the optimal coupling position between the charger's transmitting coil and the second device to be charged is a second preset position. The user then inputs a second preset voice message, for example, "Move the transmitting coil to the second preset position." This voice input event, i.e., the second preset voice message input event, is bound to a second preset command. When the second preset voice message is input, the charger's controller receives the second preset command.

[0047] When a user charges a third device, the user determines, based on test results from the self-learning mode, that the optimal coupling position between the charger's transmitting coil and the third device is a third preset position. The user then inputs a third preset voice message, for example, "Move the transmitting coil to the third preset position." This voice input event, i.e., the third preset voice message input event, is associated with a third preset command. When the third preset voice message is input, the charger's controller receives the third preset command.

[0048] In another example of the present application, when a user charges a first device to be charged, based on test results memorized in a self-learning mode, the user determines that the optimal coupling position between the charger's transmitting coil and the first device to be charged is a first preset position, and then touches a first preset area of the touch screen. This touch screen touch event, i.e., the event that the first preset area of the touch screen is touched, is bound to a first preset instruction. When the first preset area of the touch screen is touched, the charger's controller receives the first preset instruction.

[0049] When a user charges a second device to be charged, the user determines, based on the test results memorized in the self-learning mode, that the optimal coupling position between the charger's transmitting coil and the second device to be charged is a second preset position. The user then touches a second preset area of the touch screen. This touch screen touch event, i.e., the event that the second preset area of the touch screen is touched, is bound to a second preset instruction. When the second preset area of the touch screen is touched, the charger's controller receives the second preset instruction.

[0050] When a user charges a third device to be charged, the user determines, based on test results memorized in the self-learning mode, that the optimal coupling position between the charger's transmitting coil and the third device to be charged is a third preset position. The user then touches a third preset area of the touch screen. This touch screen touch event, i.e., the event that the third preset area of the touch screen is touched, is bound to a third preset instruction. When the third preset area of the touch screen is touched, the charger's controller receives the third preset instruction.

[0051] It is worth mentioning that the preset instruction can also be bound to other events. For example, in a variant embodiment of the present application, the preset instruction is bound to the identification event of the device to be charged, that is, the preset instruction is generated based on the identification result of the device to be charged by the charger. Specifically, after confirming that the device identity information of the device to be charged can be obtained, the charger obtains the device identity information of the device to be charged, and obtains the preset instruction based on the identity information of the device to be charged. The device identity information of the device to be charged includes one or more of the following information: personal identification number (PIN), device serial number (Device ID), device model, user-defined device name, device type, etc. The device types include: iPhone, Huawei, Xiaomi, etc. When the device to be charged is placed on a wireless charger, the device identity information of the device to be charged can be obtained through the wireless charging protocol. If the device identity information of the device to be charged cannot be obtained through the wireless charging protocol, then there is no device to be charged on the charger or the device to be charged is not compatible with the charger.

[0052] The optimal coupling positions between the transmitting coil and different models of devices to be charged are tested and recorded in a self-learning mode. A charging coupling position database is further constructed. This database records the optimal coupling positions between different devices to be charged and the transmitting coil. For example, the optimal coupling position corresponding to a first device to be charged is a first preset position; the optimal coupling position corresponding to a second device to be charged is a second preset position; and the optimal coupling position corresponding to a third device to be charged is a third preset position. The event of identifying the device to be charged as the first device identity is bound to a first preset instruction. The event of identifying the device to be charged as the second device identity is bound to a second preset instruction. The event of identifying the device to be charged as the third device identity is bound to a third preset instruction. When the charger identifies the device to be charged as the first device identity, the charger controller receives the first preset instruction. When the charger identifies the device to be charged as the second device identity, the charger controller receives the second preset instruction. When the charger identifies the device to be charged as the third device identity, the charger controller receives the third preset instruction.

[0053] In step S120, the charger's transmitting coil is adjusted to a preset position based on the preset instruction, so that the charger's transmitting coil and the receiving coil of the device to be charged are coupled and wireless charging is performed. Accordingly, the preset positions include at least a first preset position and a second preset position. In some embodiments of the present application, the preset positions also include a third preset position, a fourth preset position, and so on.

[0054] Specifically, if Figure 2 As shown, step S120 includes: S121, obtaining the real-time position of the transmitting coil; S122, generating a motor driving signal based on a comparison between the real-time position and the preset position; S123, driving the motor by the motor driving signal to drive the transmitting coil to the preset position by the motor.

[0055] Regarding obtaining the preset position through the self-learning mode, in one embodiment of the present application, a user interaction interface is added to the charger panel to enter the self-learning mode, and the transmitting coil of the wireless charger is driven by the motor to find the best charging coupling position with the receiving coil of the user's mobile phone (with wireless charging function), and the memory is saved. In the next cycle or when the user does not request to change the mobile phone, the working position is always remembered and maintained. In the process of finding the best charging coupling position with the receiving coil of the user's mobile phone, the characteristic signal of the mobile phone and the power loss value can be combined at the same time.

[0056] Specifically, the preset position is obtained through the self-learning mode, such as Figure 3As shown, the method includes step S101, adjusting the position of the transmitting coil of the charger, and determining the coupling degree between the transmitting coil and the test receiving coil of the test device to be charged when the transmitting coil is in various positions to obtain a coupling degree set; S102, determining the preset position based on the coupling degree set.

[0057] In step S101 , the specific manner of determining the coupling degree between the transmitting coil and the test receiving coil of the test device to be charged when the transmitting coil is in various positions may refer to the following embodiments.

[0058] In one embodiment of the present application, the degree of coupling between the transmitting coil and the test receiving coil of the test device to be charged is determined primarily by the energy intensity received by the test receiving coil. The higher the energy intensity received by the test receiving coil, the higher the degree of coupling between the transmitting coil and the test receiving coil of the test device to be charged.

[0059] Specifically, the transmitting coil sends fixed energy at different positions, and the test receiving coil feeds back the received signal energy strength (Signal Strength) to identify the current position of the wireless transmitting coil for optimal coupling. The motor drives the transmitting coil to different positions and feeds back the energy strength of the test receiving coil. A relatively high energy strength value indicates a good coupling position.

[0060] In another embodiment of the present application, the degree of coupling between the transmitting coil and the test receiving coil of the test device to be charged is determined primarily by a power loss value of the test receiving coil's received power relative to the transmitting power of the transmitting coil. The lower the power loss value of the test receiving coil's received power relative to the transmitting power of the transmitting coil, the higher the degree of coupling between the transmitting coil and the test receiving coil of the test device to be charged.

[0061] Specifically, after the wireless charger enters charging mode, the relative positions of the transmitting coil and the test receiving coil differ, resulting in different power loss relationships. The greater the overlap between the transmitting coil and the test receiving coil, the lower the power loss, while the smaller the overlap, the higher the power loss. During operation, the transmitting coil of the wireless charger receives the current received power from the test receiving coil and calculates the loss relationship based on the current internal transmit power. The transmitting coil is simultaneously driven to different positions by a motor, and the optimal coupling position is identified based on the functional loss relationship between the transmitting coil and the test receiving coil.

[0062] It is worth mentioning that determining the coupling degree between the transmitting coil and the test receiving coil of the test device to be charged by using the power loss value can not only find the optimal coupling position, but also reduce the probability of false alarms in foreign object detection.

[0063] Specifically, different brands and even within the same brand have different receiving coil suppliers, resulting in different receiving coil parameter compensation values. Furthermore, charging positions, heights, and charging powers vary across brands and within the same brand. This often leads to Brand B falsely reporting FOD, or even failing to report FOD, even when Brand A's FOD function is met. The FOD identification principle: The transmitting coil calculates the current actual loss based on its own transmit power and the actual received power reported by the receiving coil. The presence of metal objects increases the actual loss due to the metal's absorption of electromagnetic energy (Note: the transmitting and receiving coils subtract their own losses during this calculation).

[0064] This application enters the self-learning mode by adding a user interaction interface to the wireless charger panel. The motor drives the transmitting coil of the wireless charger to find the best charging coupling position with the receiving coil of the user's mobile phone (with wireless charging function). By sending different powers and combining the actual receiving power fed back by the receiving coil, the corresponding relationship of the power loss of the receiving coil is recorded in real time, which can better match the receiving coil, thereby achieving no false alarms and normal identification of FOD (Note: the characteristic parameters of the mobile phone are recorded during the identification process, such as the mobile phone ID\quality factor Q value, etc.). Accordingly, in the self-learning mode, the correspondence between the Q value of the transmitting coil in various positions and the device to be charged with different identity information is also tested. In the subsequent process of confirming the best coupling position, if the transmitting coil is driven to the best coupling position, and the Q value corresponding to the device to be charged deviates greatly from the Q value obtained through the self-learning mode, it is determined that a foreign object has been detected.

[0065] In another embodiment of the present application, dual confirmation is performed by using the energy intensity received by the test receiving coil and the power loss value of the test receiving coil.

[0066] Accordingly, in one embodiment of the present application, the coupling degree between the transmitting coil and the test receiving coil of the test device to be charged is determined when the transmitting coil is in various positions, such as Figure 4 As shown, the method includes the steps of: S1011A, obtaining energy intensity received by the test receiving coil when the transmitting coil is in various positions; S1012A, determining, based on the energy intensity, the coupling degree between the transmitting coil and the receiving coil when the transmitting coil is in various positions to obtain a coupling degree set.

[0067] In step S102, the position of the transmitting coil when the energy intensity received by the testing receiving coil is the highest is used as the optimal coupling position, and the optimal coupling position is used as the preset position.

[0068] In another embodiment of the present application, the coupling degree between the transmitting coil and the test receiving coil of the test device to be charged is determined when the transmitting coil is in various positions, such as Figure 5 As shown, the method includes the steps of: S1011B, obtaining a power loss value of the receiving power of the test receiving coil relative to the transmitting power of the transmitting coil when the transmitting coil is in various positions; S1012B, determining, based on the power loss value, a coupling degree between the transmitting coil and the receiving coil when the transmitting coil is in various positions to obtain a coupling degree set.

[0069] In step S102, the position of the transmitting coil when the power loss value is the lowest is used as the optimal coupling position, and the optimal coupling position is used as the preset position.

[0070] In another embodiment of the present application, the coupling degree between the transmitting coil and the test receiving coil of the test device to be charged is determined when the transmitting coil is in various positions to obtain a coupling degree set, such as Figure 6 and Figure 7As shown, the method includes the following steps: S1011C, obtaining the energy intensity received by the test receiving coil when the transmitting coil is in various positions; S1012C, determining the coupling degree between the transmitting coil and the receiving coil when the transmitting coil is in various positions based on the energy intensity to obtain a preliminary coupling degree set; S1013C, determining a preliminary optimal coupling position of the transmitting coil based on the preliminary coupling degree set, wherein the energy intensity received by the test receiving coil is the highest when the transmitting coil is in the preliminary optimal coupling position; S1014C, adjusting the transmitting coil to the preliminary optimal coupling position; S1015C, further adjusting the position of the transmitting coil and obtaining a power loss value of the received power of the test receiving coil relative to the transmit power of the transmitting coil when the transmitting coil is in various positions; S1016C, determining the coupling degree between the transmitting coil and the receiving coil when the transmitting coil is in various positions based on the power loss value to obtain a coupling degree set. In step S1015C, during the process of further adjusting the position of the transmitting coil, the transmit power of the transmitting coil is simultaneously adjusted to learn the power loss in the full power range. In step S1015C, the movement range of the transmitting coil in the process of re-adjusting the position of the transmitting coil can be designed to be different from the movement range of the transmitting coil in the process of adjusting the position of the transmitting coil of the charger before step S1011C in step S101, for example, smaller than the movement range of the transmitting coil in the process of adjusting the position of the transmitting coil of the charger before step S1011C in step S101.

[0071] In step S102, the position of the transmitting coil when the power loss value is the lowest is used as the optimal coupling position, and the optimal coupling position is used as the preset position.

[0072] Based on the mechanism of the above-mentioned wireless charging positioning method based on position memory, this application proposes a wireless charging positioning system based on position memory. Figure 8 To describe the wireless charging positioning system based on position memory according to an embodiment of the present application.

[0073] Figure 8 The figure shows a block diagram of a wireless charging positioning system based on position memory according to an embodiment of the present application.

[0074] like Figure 8 As shown, the wireless charging positioning system based on position memory includes a processor 10, a memory 20, a transmitting coil 30 and a motor 40. The motor 40 is connected to the processor 10; the transmitting coil 30 is installed on the motor 50.

[0075] The processor 10 may be a central processing unit (CPU) or other forms of processing units with data processing capabilities and / or instruction execution capabilities, and may control other components in the position memory-based wireless charging positioning system to perform desired functions.

[0076] The memory 20 may include one or more computer program products, which may include various forms of computer-readable storage media, such as volatile memory and / or non-volatile memory. The volatile memory may include, for example, random access memory (RAM) and / or cache memory. The non-volatile memory may include, for example, read-only memory (ROM), a hard disk, flash memory, etc. One or more computer program instructions may be stored on the computer-readable storage medium, and the processor 10 may execute the program instructions to implement the wireless charging positioning method based on position memory and / or other desired functions described in the various embodiments of the present application described above.

[0077] The processor 10 includes a command receiving module 11 and a position control module 12. The command receiving module 11 is configured to receive a preset command. The position control module 12 is configured to adjust the charger's transmitting coil to a preset position based on the preset command, so that the charger's transmitting coil and the receiving coil of the device to be charged are coupled and wireless charging is performed. The preset position is acquired through a self-learning mode.

[0078] In one embodiment of the present application, the position control module 12 is further used to obtain the real-time position of the transmitting coil; generate a motor drive signal based on a comparison between the real-time position and the preset position; and drive the motor through the motor drive signal to drive the transmitting coil to the preset position through the motor.

[0079] In summary, the wireless charging positioning method and system based on position memory are described. The wireless charging positioning method based on position memory can quickly determine the optimal coupling position of the transmitting coil based on "memory" without the need to frequently match the positions of the receiving coil and the transmitting coil.

[0080] The above description of the present application and its embodiments is non-limiting. The drawings show only one embodiment of the present application, and the actual structure is not limited thereto. In short, if a person skilled in the art is inspired by this and, without departing from the inventive purpose of this application, designs a structure and embodiment similar to this technical solution without creatively designing, they shall fall within the scope of protection of this application.

Claims

1. A wireless charging positioning method based on position memory, characterized in that: include: Receive preset instructions; Based on the preset instruction, the transmitting coil of the charger is adjusted to a preset position so that the transmitting coil of the charger and the receiving coil of the device to be charged are coupled and wireless charging is performed, wherein the preset position is obtained through a self-learning mode.

2. The wireless charging positioning method based on position memory according to claim 1, characterized in that: Adjusting the transmitting coil of the charger to a preset position based on the preset instruction includes: Get the real-time position of the transmitting coil; generating a motor drive signal based on a comparison between the real-time position and the preset position; The motor is driven by the motor driving signal to drive the transmitting coil to the preset position.

3. The wireless charging positioning method based on position memory according to claim 2, characterized in that: The preset instruction is bound to a local input event and / or an external signal input event.

4. The wireless charging positioning method based on position memory according to claim 1, characterized in that: Acquiring the preset position through a self-learning mode includes: adjusting a position of a transmitter coil of the charger, and determining a coupling degree between the transmitter coil and a test receiver coil of a test device to be charged when the transmitter coil is at each position to obtain a set of coupling degrees; The preset position is determined based on the coupling degree set.

5. The wireless charging positioning method based on position memory according to claim 4, characterized in that: Determining a coupling degree between the transmitting coil and a test receiving coil of a test device to be charged when the transmitting coil is in various positions to obtain a set of coupling degrees includes: Acquire the energy intensity received by the test receiving coil when the transmitting coil is at various positions; A coupling degree between the transmitting coil and the receiving coil when the transmitting coil is at various positions is determined based on the energy intensity to obtain a coupling degree set.

6. The wireless charging positioning method based on position memory according to claim 4, characterized in that: Determining a coupling degree between the transmitting coil and a test receiving coil of a test device to be charged when the transmitting coil is in various positions to obtain a set of coupling degrees includes: Obtaining a power loss value of the receiving power of the test receiving coil relative to the transmitting power of the transmitting coil when the transmitting coil is at various positions; A coupling degree between the transmitting coil and the receiving coil when the transmitting coil is in various positions is determined based on the power loss value to obtain a coupling degree set.

7. The wireless charging positioning method based on position memory according to claim 3, characterized in that: Determining a coupling degree between the transmitting coil and a test receiving coil of a test device to be charged when the transmitting coil is in various positions to obtain a set of coupling degrees includes: Acquire the energy intensity received by the test receiving coil when the transmitting coil is at various positions; determining, based on the energy intensity, a coupling degree between the transmitting coil and the receiving coil when the transmitting coil is at various positions to obtain a preliminary coupling degree set; determining a preliminary optimal coupling position of the transmitting coil based on the preliminary coupling degree set, wherein the energy intensity received by the test receiving coil is the highest when the transmitting coil is at the preliminary optimal coupling position; adjusting the transmitting coil to the preliminary optimal coupling position; adjusting the position of the transmitting coil again, and obtaining a power loss value of the receiving power of the test receiving coil relative to the transmitting power of the transmitting coil when the transmitting coil is at each position; A coupling degree between the transmitting coil and the receiving coil when the transmitting coil is in various positions is determined based on the power loss value to obtain a coupling degree set.

8. A wireless charging positioning system based on position memory, characterized in that: comprising a processor, the processor comprising: An instruction receiving module, used for receiving preset instructions; A position control module is used to adjust the transmitter coil of the charger to a preset position based on the preset instruction so that the transmitter coil of the charger and the receiving coil of the device to be charged are coupled and wireless charging is performed, wherein the preset position is obtained through a self-learning mode.

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