Wireless charging transmitting device and wireless charging system

Abstract

The utility model provides a wireless charging transmitting device and a wireless charging system, and relates to the technical field of wireless charging. The wireless charging transmitting device comprises a base, a charging transmitting mechanism and a foreign matter monitoring mechanism, the charging transmitting mechanism is arranged in the base, the foreign matter monitoring mechanism is arranged above the base, and the foreign matter monitoring mechanism is at least used for foreign matter monitoring at the position, corresponding to the charging transmitting mechanism, of the upper end face of the base. According to the wireless charging transmitting device, high-precision and high-reliability foreign matter detection can be realized through cooperation of the base, the charging transmitting mechanism and the foreign matter monitoring mechanism, so that the safety, the stability and the reliability of a wireless charging process are ensured, and the foreign matter monitoring mechanism is arranged above the base, so that the wireless charging transmitting device is convenient to use. Therefore, the monitoring range of the foreign matter monitoring mechanism can fully cover the wireless charging area, at least the existence of a monitoring blind area in the wireless charging area is avoided, the precision of foreign matter detection in the wireless charging area is improved, and dangerous foreign matters can be timely and accurately found.

Description

Technical Field

[0001] This utility model relates to the field of wireless charging technology, and more specifically, to a wireless charging transmitter and a wireless charging system. Background Technology

[0002] Wireless charging technology is a technology that transmits electrical energy through electromagnetic induction or electromagnetic resonance. It is widely used in mobile devices, electric vehicles and other fields. Specifically, it converts electrical energy into electromagnetic waves through a wireless charging transmitter and transmits them wirelessly to a wireless charging receiver without mechanical contact, which is convenient and efficient.

[0003] In practical applications, such as wireless charging for electric vehicles, the cavity between the wireless charging transmitter and the receiver makes it easy for foreign objects to enter, affecting charging safety. To address this, related technologies typically equip the wireless charging transmitter or receiver with a monitoring mechanism to detect foreign objects in the charging area. However, this monitoring mechanism is usually located inside the transmitter or receiver, potentially leading to blind spots and affecting detection accuracy. Inaccurate results may result in misjudgments or missed detections, compromising the safety of wireless charging. Utility Model Content

[0004] The problem this invention addresses is: how to improve the accuracy of foreign object detection.

[0005] To address the aforementioned problems, this utility model provides a wireless charging transmitter and a wireless charging system.

[0006] In a first aspect, the present invention provides a wireless charging transmitter, including a base, a charging transmitter mechanism and a foreign object detection mechanism. The charging transmitter mechanism is disposed inside the base, and the foreign object detection mechanism is disposed above the base. The foreign object detection mechanism is used at least for detecting foreign objects at the location corresponding to the position of the charging transmitter mechanism on the upper surface of the base.

[0007] Optionally, the wireless charging transmitter further includes a mounting base protruding from the upper edge of the base, and the foreign object detection mechanism is disposed within the mounting base.

[0008] Optionally, the base and the mounting base are integrally formed, or the base and the mounting base are detachably connected.

[0009] Optionally, the foreign object detection mechanism includes a metal foreign object detection structure and a living foreign object detection structure, both of which are disposed within the mounting base.

[0010] Optionally, the metal foreign object detection structure includes at least one of an infrared sensor and an image sensor, and the live foreign object detection structure includes at least one of a millimeter-wave radar and the image sensor.

[0011] Optionally, the wireless charging transmitter further includes a foreign object cleaning mechanism disposed above the base; the foreign object cleaning mechanism includes a brush structure and a driving structure, the brush structure is disposed in contact with the upper surface of the base, and the driving structure is used to drive the brush structure to move on the upper surface of the base.

[0012] Optionally, the upper surface of the base is inclined.

[0013] Optionally, the wireless charging transmitter further includes a communication mechanism for communicating with a cloud server, wherein the communication mechanism is communicatively connected to at least one of the charging transmitter, the foreign object detection mechanism, and the foreign object removal mechanism; and the cloud server is communicatively connected to a user's mobile terminal.

[0014] Optionally, the wireless charging transmitter further includes an alarm mechanism, and the foreign object detection mechanism and the foreign object removal mechanism are respectively communicatively connected to the alarm mechanism.

[0015] Secondly, this utility model provides a wireless charging system, including a wireless charging transmitter as described in the first aspect, and a wireless charging receiver adapted to the wireless charging transmitter for installation on a vehicle.

[0016] The beneficial effects of this invention's wireless charging transmitter and wireless charging system are as follows: Through the coordinated operation of the base, charging transmitter mechanism, and foreign object detection mechanism, the wireless charging transmitter of this invention achieves high-precision and high-reliability foreign object detection, thereby ensuring the safety, stability, and reliability of the wireless charging process. The base serves as the carrier for components such as the charging transmitter mechanism and the foreign object detection mechanism, and provides structural support, integrating the various components of the wireless charging transmitter and improving its overall structural strength. The charging transmitter mechanism is used to achieve wireless power transmission and charging power adjustment, thereby ensuring charging efficiency and safety. The foreign object detection mechanism is located above the base, allowing its monitoring range to fully cover the wireless charging area, at least avoiding blind spots and improving the accuracy of foreign object detection within the wireless charging area. This enables timely and accurate detection of dangerous foreign objects, and by promptly handling detected dangerous foreign objects, interference with the wireless charging process can be effectively reduced or avoided, thereby improving the safety and efficiency of wireless charging and optimizing the vehicle wireless charging experience (or user experience). Attached Figure Description

[0017] Figure 1This is a schematic diagram of the structure of a wireless charging transmitter in an embodiment of this utility model;

[0018] Figure 2 This is a partial structural schematic diagram of the wireless charging transmitter in an embodiment of this utility model.

[0019] Explanation of reference numerals in the attached figures:

[0020] 1. Base; 2. Charging and transmitting mechanism; 3. Foreign object detection mechanism; 31. Infrared sensor; 32. Millimeter-wave radar; 4. Mounting base; 5. Foreign object cleaning mechanism; 51. Brush body structure. Detailed Implementation

[0021] To make the above-mentioned objects, features, and advantages of this utility model more apparent and understandable, specific embodiments of this utility model will be described in detail below with reference to the accompanying drawings. Although some embodiments of this utility model are shown in the drawings, it should be understood that this utility model can be implemented in various forms and should not be construed as limited to the embodiments set forth herein. Rather, these embodiments are provided to provide a more thorough and complete understanding of this utility model. It should be understood that the drawings and embodiments of this utility model are for illustrative purposes only and are not intended to limit the scope of protection of this utility model.

[0022] The term "comprising" and its variations as used herein are open-ended, meaning "including but not limited to"; the term "based on" means "at least partially based on"; the term "one embodiment" means "at least one embodiment"; the term "another embodiment" means "at least one additional embodiment"; the term "some embodiments" means "at least some embodiments"; and the term "optionally" means "optional embodiments". Definitions of other terms will be given in the following description. It should be noted that the concepts of "first," "second," etc., mentioned in this utility model are only used to distinguish different devices, modules, or units, and are not used to limit the order of functions performed by these devices, modules, or units or their interdependencies.

[0023] It should be noted that the terms "one" and "multiple" used in this utility model are illustrative rather than restrictive. Those skilled in the art should understand that, unless explicitly stated otherwise in the context, they should be understood as "one or more". The term "connection" used in this utility model, unless specifically stated otherwise, can refer to a direct connection, an indirect connection via one or more intermediate components, a detachable connection, welding, or an integral connection.

[0024] Combination Figure 1 , Figure 2As shown, this utility model embodiment provides a wireless charging transmitter device, including a base 1, a charging transmitter 2 and a foreign object detection mechanism 3. The charging transmitter 2 is disposed inside the base 1, and the foreign object detection mechanism 3 is disposed above the base 1. The foreign object detection mechanism 3 is used at least for foreign object detection at the position corresponding to the position of the charging transmitter 2 on the upper surface of the base 1.

[0025] In this embodiment, the wireless charging transmitter is used to cooperate with the wireless charging receiver (such as a wireless charging receiver installed in a vehicle) to realize the wireless transmission of electrical energy to the wireless charging receiver.

[0026] The wireless charging transmitter includes a base 1, a charging transmitter 2, and a foreign object detection mechanism 3. The base 1 serves as the supporting component for the entire wireless charging transmitter, integrating all components and enhancing its overall structural strength. When used to wirelessly charge vehicles, the base 1 can be placed on the ground in the corresponding parking area to cooperate with a wireless charging receiver located at the bottom of the vehicle. The base 1 has a housing space within which the charging transmitter 2 is housed, protecting it from the base 1 housing. The charging transmitter 2 includes an excitation coil (serving as the primary coil, which works with the corresponding induction coil in the wireless charging receiver as the secondary coil to achieve wireless power transmission) and a power control module. The excitation coil is made of a highly conductive material and is positioned inside the base 1 near its upper surface to facilitate electromagnetic coupling with the induction coil of the vehicle's wireless charging receiver, thus enabling wireless power transmission. The power control module adjusts the transmission power according to the receiver's requirements to ensure charging efficiency and safety.

[0027] The wireless charging transmitter is equipped with a foreign object detection mechanism 3 to improve its compatibility and applicability. This ensures that when the wireless charging transmitter is used to wirelessly charge different devices with wireless charging receivers (such as vehicles), it can comprehensively monitor the intrusion of foreign objects within the corresponding wireless charging area, improving the accuracy of foreign object detection and ensuring the safety of wireless charging. Specifically, the foreign object detection mechanism 3 is positioned above the base 1, such as near the upper surface of the base 1. This allows the detection range of the foreign object detection mechanism 3 to fully cover the wireless charging area corresponding to the position of the charging transmitter 2 on the upper surface (or above) of the base 1 (i.e., the space between the corresponding charging transmitter 2 and the charging receiver). This at least avoids monitoring blind spots within the wireless charging area, improving the accuracy of foreign object detection within the wireless charging area, and ensuring accurate detection of foreign objects on the upper surface of the base 1 (i.e., foreign objects within the wireless charging area between the upper surface of the base 1 and the vehicle), thus guaranteeing the safety and reliability of the wireless charging process. The foreign object detection mechanism 3 is used at least to detect foreign objects in the area corresponding to the position of the charging transmitter 2 on the upper surface of the base 1 (i.e., the wireless charging area). This area is usually a critical location for electromagnetic coupling during wireless charging and is a core area where foreign objects may directly affect charging efficiency and safety. Therefore, by detecting foreign objects in this area, the practicality and accuracy of the monitoring are ensured. In some embodiments, to further improve the safety and applicability of the wireless charging device, the foreign object detection mechanism 3 can also extend the monitoring range to the area near the base 1 to detect potentially dangerous foreign objects, such as metal or living objects, that may enter the core charging area from the outside. This allows for early detection and appropriate handling of foreign objects before they enter the core charging area, thereby reducing interference with wireless charging operations.

[0028] In summary, the wireless charging transmitter of this embodiment, through the coordinated operation of the base 1, the charging transmitter 2, and the foreign object detection mechanism 3, can achieve high-precision and high-reliability foreign object detection, thereby ensuring the safety, stability, and reliability of the wireless charging process. The base 1 serves as the carrier for components such as the charging transmitter 2 and the foreign object detection mechanism 3, and provides structural support, integrating the various components of the wireless charging transmitter and improving the overall structural strength of the device. The charging transmitter 2 is used to achieve wireless power transmission and charging power adjustment, thereby ensuring charging efficiency and safety. The foreign object detection mechanism 3 is positioned above the base 1, allowing its monitoring range to fully cover the wireless charging area, at least avoiding blind spots and improving the accuracy of foreign object detection. This enables timely and accurate detection of dangerous foreign objects, and by promptly handling detected dangerous foreign objects, interference with the wireless charging process can be effectively reduced or avoided, thereby improving the safety and efficiency of wireless charging and optimizing the vehicle wireless charging experience (or user experience).

[0029] Optionally, combined Figure 1 , Figure 2 As shown, the wireless charging transmitter also includes a mounting base 4 protruding from the upper edge of the base 1, and a foreign object detection mechanism 3 is disposed inside the mounting base 4.

[0030] In this embodiment, the charging transmitter 2 is disposed within the base 1 and corresponds to the upper surface of the base 1, so that it can smoothly match (form electromagnetic coupling) with the wireless charging receiver when the vehicle's wireless charging receiver moves to the corresponding position on the upper surface of the base 1. The mounting base 4 of the wireless charging transmitter is located at the edge of the upper surface of the base 1 to avoid the area on the upper surface of the base 1 corresponding to the position of the charging transmitter 2 (i.e., the wireless charging area), thus avoiding interference with wireless charging and reducing or preventing electromagnetic interference from the foreign object detection mechanism 3 disposed within the mounting base 4 during wireless charging, ensuring the accuracy of the monitoring results. Furthermore, the mounting base 4 protrudes from the upper surface of the base 1, giving it a certain height relative to the upper surface of the base 1, thereby expanding the monitoring range of the foreign object detection mechanism 3. This ensures that the monitoring range of the foreign object detection mechanism 3 disposed within the mounting base 4 can fully cover the wireless charging area, ensuring effective foreign object detection. Furthermore, the mounting base 4 can increase the structural strength of the base 1 and improve the overall structural strength of the wireless charging transmitter. It can also be used by the driver of the charging vehicle to sense the position of the wireless charging transmitter, so that the wheels of the charging vehicle can avoid the wireless charging transmitter, preventing the driver from running over it or the wheels from staying on the base 1 for a long time. This provides better protection for the long-term use of the wireless charging transmitter and provides auxiliary reference for the accurate correspondence between the position of the wireless charging transmitter and the wireless charging receiver on the charging vehicle during the charging process.

[0031] Optionally, the base 1 and the mounting base 4 are integrally formed, or the base 1 and the mounting base 4 are detachably connected.

[0032] In this embodiment, the base 1 and the mounting base 4 can be integrally formed, such as through integral casting, injection molding, or other molding processes during manufacturing, to make the mounting base 4 and the base 1 form an integral structure. This improves the overall strength and durability of the wireless charging transmitter, reduces assembly steps, increases production efficiency, and reduces manufacturing errors that may occur due to connecting components. Alternatively, the base 1 and the mounting base 4 can be detachably connected, for example, by threaded connection, snap-fit ​​connection, or slide rail installation. This improves the ease of installation and removal of the mounting base 4 from the base 1. When the foreign object detection mechanism 3 needs repair or replacement, the mounting base 4 can be directly removed without replacing the entire base 1, reducing the later maintenance costs of the wireless charging transmitter.

[0033] Optionally, the foreign object detection mechanism 3 includes a metal foreign object detection structure and a live foreign object detection structure, both of which are installed in the mounting base 4.

[0034] Considering that metallic and living foreign objects can significantly impact the safety and efficiency of wireless charging—for example, metallic foreign objects can absorb electromagnetic energy during wireless charging, potentially leading to localized overheating, energy waste, and even fire hazards; while living foreign objects (such as small animals or human parts) entering the wireless charging area can not only interfere with electromagnetic coupling during charging but also cause electromagnetic radiation or other potential harm to the organism. Therefore, in this embodiment, the foreign object detection mechanism 3 includes a metallic foreign object detection structure and a living foreign object detection structure to achieve targeted monitoring of both metallic and living foreign objects, improving the accuracy of the monitoring. Furthermore, both the metal foreign object detection structure and the live foreign object detection structure are housed within the mounting base 4. On one hand, the mounting base 4 effectively protects the foreign object detection mechanism 3, ensuring the stability of their positions and guaranteeing their stable operation. It also prevents the foreign object detection mechanism 3 from being directly exposed to the external environment and easily damaged (e.g., by being run over by wheels), thus extending its service life and improving its operational stability and reliability. On the other hand, it facilitates dust and water protection for the foreign object detection mechanism 3, improving its adaptability to various environments and preventing decreased detection accuracy, signal interference, or even malfunctions due to dust accumulation or moisture. This ensures the foreign object detection mechanism 3 maintains stable and reliable performance during long-term operation. In some embodiments, in order to ensure that the foreign object monitoring mechanism 3 installed in the mounting base 4 can effectively monitor the wireless charging area located outside the mounting base 4, it is necessary to ensure that the mounting base 4 does not obstruct the monitoring range of the foreign object monitoring mechanism 3. For example, the mounting base 4 may be made of a wave-transparent material or a monitoring window may be reserved at the corresponding installation position of the foreign object monitoring mechanism 3 to ensure the normal transmission and reception of monitoring signals, thereby ensuring detection accuracy.

[0035] The metal foreign object detection structure can utilize existing technologies such as electromagnetic induction, current monitoring, temperature change detection, or image recognition to detect metal foreign objects. For example, by sensing changes in the electromagnetic field within the wireless charging area through a detection coil, if abnormal magnetic field interference is detected, it can be determined that a metal foreign object exists in that area. By monitoring changes in the output current of the charging transmitter 2, it can be determined whether the presence of a metal foreign object has caused abnormal electromagnetic energy loss or absorption. If abnormal current changes occur, it can be determined that a metal foreign object exists within the wireless charging area. Based on the fact that metal foreign objects easily generate eddy current effects in high-frequency electromagnetic fields, leading to significant heat accumulation, by monitoring temperature changes within the wireless charging area, if a local abnormal temperature rise trend is detected, it can be determined that a metal foreign object exists in the corresponding area. By acquiring images of the wireless charging area and performing image recognition, metal foreign object detection can be performed. The live foreign object detection structure can utilize existing technologies such as microwave reflection or image recognition to detect live foreign objects. For example, based on microwave sensors, the microwave reflection characteristics are utilized. By emitting microwave signals and receiving reflected echoes, waveform changes can be analyzed. If waveforms with typical live characteristics (such as frequency or amplitude fluctuations caused by breathing or slight movements) are detected, the presence of a live foreign object in the monitored area can be determined. Similarly, by acquiring images of the wireless charging area and performing image recognition, live foreign object detection can be performed. Additionally, the presence of a live foreign object in the wireless charging area can be determined by capturing abnormal heat source signals (such as infrared heat emitted by animals or humans).

[0036] Optionally, the metal foreign object detection structure includes at least one of an infrared sensor 31 and an image sensor, and the live foreign object detection structure includes at least one of a millimeter-wave radar 32 and an image sensor.

[0037] In this embodiment, compared to the high cost and susceptibility to false triggering caused by power transmission signal interference when using a monitoring coil for metal foreign object detection, an infrared sensor 31 can be used to achieve more economical, efficient, and stable metal foreign object detection. Specifically, the infrared sensor 31, based on real-time monitoring of temperature changes within the wireless charging area, can effectively capture local temperature anomalies caused by metal foreign objects. For example, when a metal foreign object enters a high-frequency electromagnetic field region, significant heat accumulation will occur due to the eddy current effect. The infrared sensor 31 can quickly detect this heat change and convert it into a recognizable signal to determine the presence of the metal foreign object. Compared to a monitoring coil, the infrared sensor 31 does not require additional complex sensing circuitry and is unaffected by changes in the intensity of the power transmission signal, thereby reducing the probability of false triggering and improving the reliability and accuracy of monitoring.

[0038] The metal foreign object detection structure can also employ image sensors to achieve high-precision monitoring of metal foreign objects within the wireless charging area. Specifically, image sensors can capture real-time image information about the wireless charging area and, combined with image processing algorithms (based on local or cloud computing devices, such as servers), analyze and identify specific features in the images. For example, based on the reflective properties, shape features, or color differences of metal objects in the image, image sensors can quickly identify metal foreign objects within the area. Moreover, by introducing machine learning algorithms, image sensors can classify and identify different types of metal foreign objects, improving the intelligence and accuracy of the monitoring.

[0039] Compared to the limitations of traditional electrode capacitor-based live object monitoring, such as limited monitoring range, susceptibility to environmental factors (e.g., humidity, dust), and poor adaptability to non-contact monitoring, the live foreign object monitoring structure can utilize millimeter-wave radar 32 to achieve wider range, higher sensitivity, and more stable live foreign object monitoring. Furthermore, compared to other microwave sensors (e.g., microwave radar, lidar), millimeter-wave radar 32 offers advantages such as higher resolution, stronger anti-interference capabilities, and stronger penetration. Specifically, millimeter-wave radar 32 transmits millimeter-wave signals and receives their reflected signals to accurately monitor the position, shape, and motion characteristics of target objects. Utilizing its high penetration and anti-interference capabilities, millimeter-wave radar 32 can effectively identify live foreign objects within the wireless charging area under complex environmental conditions. For example, based on millimeter-wave radar 32, by analyzing the Doppler effect of the reflected signals, it can capture minute movements of living targets (such as small animals or humans), such as breathing or heartbeat, thereby achieving accurate identification of live foreign objects.

[0040] The live foreign object detection structure can also employ an image sensor to achieve high-precision monitoring of live foreign objects within the wireless charging area. Specifically, the image sensor can capture image information about the wireless charging area in real time, and combine it with image processing algorithms (such as edge detection, contour recognition, texture analysis, etc.) to extract features that may represent live foreign objects from the captured images, thereby achieving rapid and accurate identification of live foreign objects.

[0041] Furthermore, the metal foreign object detection structure can simultaneously employ an infrared sensor 31 and an image sensor to detect metal foreign objects from multiple angles in the wireless charging area. This provides more comprehensive and accurate monitoring, effectively improving the reliability and accuracy of metal foreign object detection. By comparing and verifying the monitoring results from both methods, the accuracy of the monitoring results can be ensured, avoiding false alarms or missed detections that may occur with a single monitoring method, thus providing a higher level of safety for the wireless charging device. Similarly, the live foreign object detection structure can simultaneously employ a millimeter-wave radar 32 and an image sensor to detect live foreign objects from multiple angles in the wireless charging area. This provides more comprehensive and accurate monitoring, effectively improving the reliability and accuracy of live foreign object detection. Similarly, by comparing and verifying the monitoring results from both methods, the accuracy of the monitoring results can be ensured, avoiding false alarms or missed detections that may occur with a single monitoring method, thus providing a higher level of safety for the wireless charging device.

[0042] For example, the metal foreign object detection structure uses an infrared sensor 31, and the live foreign object detection structure uses a millimeter-wave radar 32, combined with... Figure 2 As shown, Figure 2 The monitoring range of the mid-infrared sensor 31 is the area between the two dashed lines that form the included angle γ, which covers the plane area directly above the charging transmitter 2 (i.e., the wireless charging area), thus meeting the requirements for detecting metal foreign objects. Figure 2 Two millimeter-wave radars 32 are provided (which can be arranged symmetrically). The monitoring range of one of them is the area between the two dashed lines that form the included angle α, and the monitoring range of the other is the area between the two dashed lines that form the included angle β. The monitoring range of the two millimeter-wave radars 32 can completely cover the area around the charging transmitter 2. In this way, when a living foreign object invades the entire wireless charging area and the vicinity of the wireless charging area, the living foreign object can be detected by the millimeter-wave radar.

[0043] Optionally, combined Figure 1 As shown, the wireless charging transmitter also includes a foreign object cleaning mechanism 5 disposed above the base 1; the foreign object cleaning mechanism 5 includes a brush body structure 51 and a driving structure, the brush body structure 51 is disposed in contact with the upper surface of the base 1, and the driving structure is used to drive the brush body structure 51 to move on the upper surface of the base 1.

[0044] In this embodiment, the foreign object cleaning mechanism 5 is disposed above the base 1, such as on the upper surface of the base 1, to clean foreign objects located on the upper surface of the base 1, ensuring safety and charging efficiency during the charging process. In other words, the cleaning area of ​​the foreign object cleaning mechanism 5 can cover the area corresponding to the position of the charging transmitter 2 on the upper surface of the base 1 (this area is a critical location for electromagnetic coupling during wireless charging; foreign objects here will directly affect charging efficiency and safety). The foreign object cleaning mechanism 5 includes a brush structure 51 and a driving structure. The brush structure 51 is arranged in contact with the upper surface of the base 1 and is adapted to move along the upper surface of the base 1 under the drive of the driving structure, achieving comprehensive cleaning (or sweeping) of the upper surface of the base 1 and preventing foreign objects from interfering with electromagnetic coupling during wireless charging.

[0045] Exemplarily, the movement of the brush body structure 51 under the drive of the drive structure can be oscillation around a point (such as windshield wiper cleaning), translational movement, oscillation and translational movement simultaneously, or rolling and translational movement. The drive structure can be a motor and a corresponding transmission structure. The motor drives the transmission structure, which in turn drives the brush body structure 51 to perform the corresponding movement, thereby cleaning the wireless charging area on the upper surface of the base 1. In some embodiments, the brush body structure 51 is made of a durable cleaning material, such as nylon bristles or other materials suitable for cleaning surfaces without damaging the material of the base 1.

[0046] Optionally, the foreign object detection mechanism 3 and the foreign object removal mechanism 5 are communicatively connected to enable timely response when the foreign object detection mechanism 3 detects dangerous foreign objects such as metal or living organisms, thereby promptly removing the dangerous foreign objects. This achieves a monitoring-removal linkage, enabling rapid handling of dangerous foreign objects, preventing interference with the wireless charging device, improving the safety and efficiency of the charging process, and optimizing the vehicle's wireless charging experience. Specifically, when the foreign object detection mechanism 3 detects dangerous foreign objects such as metal or living organisms, the foreign object removal mechanism 5 responds promptly, and the operational logic and related software programs involved in the foreign object removal process are existing technologies; alternatively, during this process, when relevant personnel are aware that the foreign object detection mechanism 3 has detected dangerous foreign objects such as metal or living organisms, they can manually control the foreign object removal mechanism 5 to remove the foreign objects.

[0047] Optionally, the upper surface of the base 1 is inclined.

[0048] In this embodiment, the upper surface of the base 1 is inclined to optimize the performance and adaptability of the wireless charging transmitter. Specifically, the inclined design of the upper surface of the base 1 can effectively reduce the accumulation of foreign objects, especially metal foreign objects, on the upper surface of the base 1, avoiding their direct impact on charging efficiency or potential safety hazards; and because of the inclination of the upper surface of the base 1, moisture, dust and other debris are less likely to remain on the upper surface of the base 1, thereby reducing the difficulty of cleaning and improving the reliability and ease of maintenance of the wireless charging transmitter.

[0049] Optionally, the wireless charging transmitter also includes a communication mechanism for communicating with a cloud server, the communication mechanism being communicatively connected to at least one of the charging transmitter 2, the foreign object detection mechanism 3, and the foreign object removal mechanism 5; the cloud server being communicatively connected to the user's mobile terminal.

[0050] In this embodiment, the communication mechanism of the wireless charging transmitter is used to enable communication between the wireless charging transmitter and external devices (such as a cloud server) to achieve remote monitoring, status management, and intelligent interaction of the wireless charging transmitter. Specifically, the communication mechanism can establish a stable connection with the cloud server through various wireless communication technologies (such as Wi-Fi, cellular networks, etc.) and support bidirectional data transmission. The communication mechanism is connected to at least one of the charging transmitter 2, the foreign object detection mechanism 3, and the foreign object removal mechanism 5 to enable remote monitoring and control of these three mechanisms. The cloud server is connected to the user's mobile terminal to facilitate information relay, ensuring efficient and stable bidirectional data transmission between the wireless charging transmitter and the user terminal. This allows the user to remotely view vehicle charging status information (such as charging time, power, etc.) or the wireless charging transmitter's own operating status information (including foreign object alerts, foreign object removal alerts, etc.) provided by the wireless charging transmitter through their mobile terminal.

[0051] Optionally, the wireless charging transmitter also includes an alarm mechanism, and the foreign object detection mechanism 3 and the foreign object removal mechanism 5 are respectively connected to the alarm mechanism in communication.

[0052] In this embodiment, the foreign object monitoring mechanism 3 and the foreign object removal mechanism 5 are respectively communicatively connected to an alarm mechanism, so that the alarm mechanism can generate alarm information (such as audible and visual alarm information), generate corresponding prompt information, or stop the current alarm based on the corresponding signals transmitted by the foreign object monitoring mechanism 3 or the foreign object removal mechanism 5. For example, when the foreign object monitoring mechanism 3 detects a foreign object, it generates corresponding alarm information through the alarm mechanism to remind relevant personnel or drive away the living foreign object; after the foreign object removal mechanism 5 removes the foreign object, it generates corresponding prompt information through the alarm mechanism to remind relevant personnel that the removal is complete; if the foreign object removal mechanism 5 cannot complete the removal due to reasons such as the foreign object being too heavy or being firmly connected to the base 1, it generates corresponding alarm information or prompt information through the alarm mechanism to remind relevant personnel to intervene; and so on.

[0053] Optionally, the foreign object monitoring mechanism 3 is communicatively connected to the charging transmitter mechanism 2.

[0054] In this embodiment, the foreign object detection mechanism 3 is communicatively connected to the charging transmitter 2. This allows the charging transmitter 2 to promptly pause, stop, or reduce charging power when it receives feedback from the foreign object detection mechanism 3 indicating the presence of a dangerous foreign object affecting charging efficiency and safety in the wireless charging area. This prevents the foreign object from damaging the charging system or harming any living foreign object. For example, when the foreign object detection mechanism 3 detects a metallic or living foreign object, the detection signal is transmitted to the charging transmitter 2 via the communication connection, and the charging transmitter 2 responds accordingly based on the received signal.

[0055] Optionally, the wireless charging transmitter also includes a processor (such as an embedded processor) for establishing communication between the charging transmitter 2, the foreign object detection mechanism 3, and the foreign object removal mechanism 5. The processor can process and relay signals, enabling the receiving mechanism to accurately identify the corresponding signal, thereby ensuring coordinated and synchronized operation between different mechanisms. For example, when the embedded processor receives a signal from the foreign object detection mechanism 3 indicating the presence of a dangerous foreign object affecting charging efficiency and safety in the wireless charging area, it sends a signal to the charging transmitter 2 to pause, stop charging, or reduce charging power to ensure charging safety.

[0056] To facilitate understanding, the following example illustrates the working principle of the wireless charging transmitter using existing technology, taking the foreign object detection structure of the foreign object detection mechanism 3 (using infrared sensor 31 for metal foreign object detection) and the live foreign object detection structure (using millimeter-wave radar 32) as examples of wireless charging for electric vehicles:

[0057] Once the wireless charging transmitter begins power transmission to the wireless charging receiver of the electric vehicle, the processor sends a power-on command to the foreign object detection mechanism 3. At this time, the infrared sensor 31 of the foreign object detection mechanism 3 begins real-time monitoring of the temperature on the upper surface of the base 1 (directly above the charging transmitter 2), and the millimeter-wave radar begins real-time monitoring of the area directly above the charging transmitter 2 and around the base 1. The processor then feeds back the temperature information monitored by the infrared sensor 31 and the information detected by the millimeter-wave radar to the processor for analysis and processing (foreign object analysis and identification). If a metallic foreign object is detected, the processor sends an alarm signal through the alarm mechanism and issues a control signal to the charging transmitter 2 to stop charging. Simultaneously, it controls the foreign object removal mechanism 5 to start, removing the metallic foreign object from the upper surface of the base 1. After the foreign object is removed, the infrared sensor 31 detects that the temperature has returned to normal. At this time, the processor sends a command to the charging transmitter 2 to resume power transmission and can upload information about the intrusion and removal of the metallic foreign object to the user terminal through the communication mechanism, allowing the user to monitor the wireless charging status in real time. If a live foreign object is detected to have entered the monitoring area, such as when the movement of the live foreign object is detected based on the principle of the change in the time taken for the electromagnetic wave reflection by millimeter-wave radar, the processor will issue an alarm signal through the alarm mechanism and issue a control signal to the charging transmitter 2 to stop charging. At the same time, it will control the foreign object removal mechanism 5 to start, clean the live foreign object on the upper surface of the base 1, or drive away the live foreign object by moving the foreign object removal mechanism 5. After the millimeter-wave radar detects that the foreign object has left, the processor will issue a command to the charging transmitter 2 to resume power transmission, and can upload the information of the live foreign object intrusion and removal to the user terminal through the communication mechanism, so that the user can monitor the wireless charging status in real time.

[0058] Unlike the aforementioned method of using infrared sensor 31 and millimeter-wave radar 32 for foreign object detection, the following example illustrates the working principle of the wireless charging transmitter using existing technology, taking the foreign object detection mechanism 3 and the live foreign object detection structure as examples:

[0059] Once the electric vehicle wireless charging system is powered on, i.e., when the wireless charging transmitter begins power transmission to the electric vehicle's wireless charging receiver, the processor sends a power-on command to the image sensor (such as a camera module). At this time, based on image recognition, the camera begins real-time monitoring of metallic and living foreign objects on the upper surface of the base 1 (directly above the charging transmitter 2) and its surrounding area. The principle is as follows: the camera module is trained using machine learning on a large amount of data on metallic and living foreign objects, and a database of all foreign object data is established. When the camera captures a foreign object, it performs image recognition (including feature extraction) and other operations, comparing it with the foreign object data in the database to determine the type of foreign object. If a metallic foreign object is detected, the processor sends an alarm signal via the alarm mechanism and issues a control signal to the charging transmitter 2 to stop charging. Simultaneously, it activates the foreign object removal mechanism 5 to remove the metallic foreign object from the upper surface of the base 1. After the camera detects the removal of the foreign object, the processor instructs the charging transmitter 2 to resume power transmission and can upload information about the intrusion and removal of the metallic foreign object to the user terminal via the communication mechanism, allowing the user to monitor the wireless charging status in real time. Conversely, if a living foreign object is detected (entering the monitoring area), the processor sends an alarm signal via the alarm mechanism and issues a control signal to the charging transmitter 2 to stop charging. Simultaneously, it activates the foreign object removal mechanism 5 to remove the living foreign object from the upper surface of the base 1, or uses the movement of the foreign object removal mechanism 5 to drive away the living foreign object. After the camera detects the removal of the foreign object, the processor instructs the charging transmitter 2 to resume power transmission and can upload information about the intrusion and removal of the living foreign object to the user terminal via the communication mechanism, allowing the user to monitor the wireless charging status in real time.

[0060] Another embodiment of the present invention provides a wireless charging system, including the wireless charging transmitter described above, and a wireless charging receiver adapted to the wireless charging transmitter and installed on a vehicle.

[0061] In this embodiment, the wireless charging system employs the aforementioned wireless charging transmitter to wirelessly charge vehicles equipped with corresponding wireless charging receivers, thereby optimizing the wireless charging experience. The wireless charging transmitter, through the coordinated operation of the base 1, charging transmitter 2, foreign object detection mechanism 3, and foreign object removal mechanism 5, achieves efficient and safe wireless charging. The base 1 serves as the carrier for components such as the charging transmitter 2, foreign object detection mechanism 3, and foreign object removal mechanism 5, and provides structural support, integrating the various components of the wireless charging transmitter and enhancing its overall structural strength. The charging transmitter 2 enables wireless power transmission and charging power adjustment, thereby ensuring charging efficiency and safety. The foreign object detection mechanism 3 is used to monitor foreign objects in the core charging area to detect dangerous foreign objects in a timely manner. The foreign object removal mechanism 5 is connected to the foreign object detection mechanism 3 to enable the foreign object removal mechanism 5 and the foreign object detection mechanism 3 to work together so that the foreign object detection mechanism 3 can respond quickly after detecting dangerous foreign objects and remove them, thereby reducing or avoiding interference from foreign objects to the wireless charging process, thus improving the safety and efficiency of wireless charging and optimizing the vehicle wireless charging experience (or user experience).

[0062] Although the present invention has been disclosed above, its scope of protection is not limited thereto. Those skilled in the art can make various changes and modifications without departing from the spirit and scope of the present invention, and all such changes and modifications will fall within the scope of protection of the present invention.

Claims

1. A wireless charging transmitter, characterized in that, It includes a base (1), a charging transmitter (2) and a foreign object detection mechanism (3). The charging transmitter (2) is disposed inside the base (1), and the foreign object detection mechanism (3) is disposed above the base (1). The foreign object detection mechanism (3) is used at least for foreign object detection at the position corresponding to the position of the charging transmitter (2) on the upper surface of the base (1).

2. The wireless charging transmitter as described in claim 1, characterized in that, It also includes a mounting base (4) protruding from the upper edge of the base (1), and the foreign object monitoring mechanism (3) is disposed in the mounting base (4).

3. The wireless charging transmitter as described in claim 2, characterized in that, The base (1) and the mounting base (4) are integrally formed, or the base (1) and the mounting base (4) are detachably connected.

4. The wireless charging transmitter as described in claim 2 or 3, characterized in that, The foreign object monitoring mechanism (3) includes a metal foreign object monitoring structure and a live foreign object monitoring structure, both of which are located within the mounting base (4).

5. The wireless charging transmitter as described in claim 4, characterized in that, The metal foreign object detection structure includes at least one of an infrared sensor (31) and an image sensor, and the live foreign object detection structure includes at least one of a millimeter-wave radar (32) and the image sensor.

6. The wireless charging transmitter as described in any one of claims 1-3, characterized in that, It also includes a foreign object cleaning mechanism (5) disposed above the base (1); the foreign object cleaning mechanism (5) includes a brush body structure (51) and a driving structure, the brush body structure (51) is disposed in contact with the upper surface of the base (1), and the driving structure is used to drive the brush body structure (51) to move on the upper surface of the base (1).

7. The wireless charging transmitter as described in any one of claims 1-3, characterized in that, The upper surface of the base (1) is inclined.

8. The wireless charging transmitter as described in claim 6, characterized in that, It also includes a communication mechanism for communicating with the cloud server, the communication mechanism being communicatively connected to at least one of the charging transmitter (2), the foreign object detection mechanism (3), and the foreign object removal mechanism (5); the cloud server being communicatively connected to the user's mobile terminal.

9. The wireless charging transmitter as described in claim 6, characterized in that, It also includes an alarm mechanism, and the foreign object monitoring mechanism (3) and the foreign object cleaning mechanism (5) are respectively connected to the alarm mechanism.

10. A wireless charging system, characterized in that, It includes the wireless charging transmitter as described in claims 1-9, and a wireless charging receiver adapted to the wireless charging transmitter for installation on a vehicle.

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