A wireless charging system, method, extracorporeal charging device, and storage medium

Abstract

The application provides a wireless charging system, method, external charging device and storage medium, including an implantable medical device and an external charging device for wireless energy transmission with the implantable medical device, the wireless charging system further includes a voice prompt module and a control module, the control module is configured to: control the external charging device to work in a scanning mode to obtain a charging efficiency local distribution map for a region where the implantable medical device is located; based on the charging efficiency local distribution map, determine at least one optimal charging target position, and generate user navigation instructions corresponding to the optimal charging target position; control the voice prompt module to broadcast the navigation instructions to guide the user to move the external charging device to the optimal charging target position, the scheme solves the problem that the user cannot determine the best charging position, thereby causing difficult alignment, low charging efficiency, and improves the alignment accuracy, energy transmission efficiency, operation safety and user operation convenience of wireless charging.

Description

Technical Field

[0001] This invention relates to the field of medical device technology, and more particularly to a wireless charging system, method, external charging device, and storage medium. Background Technology

[0002] Currently, implantable neurostimulators combined with wireless power supply technology are widely used in the treatment of neurological diseases. By powering or charging the implanted device via an external transmitter, the device's lifespan is significantly extended. Ensuring efficient alignment and charging between the external charging device and the implanted device is a key issue in thermal management in this field.

[0003] Currently, the common approach is to compensate for the positional deviation between the external charging device and the implanted medical device by increasing the transmission power. This method increases the transmission power to make up for the energy transmission loss caused by coil misalignment. Alternatively, a simple sound and light prompt, such as a buzzer, can be used to inform the user of the charging status. This method emits a prompt sound or light when there is an abnormality in the charging process.

[0004] The main drawbacks of the above technical solutions are: increasing the transmission power to compensate for positional deviation not only increases energy consumption and device heat generation, but also poses certain safety hazards; while relying solely on simple sound and light prompts such as buzzers lacks clear directional guidance, making it difficult for users to accurately determine the direction to be adjusted and where the optimal charging position is, thus making it difficult to precisely move the external charging device to the optimal position aligned with the implanted medical device, thereby failing to fundamentally solve the problem of low charging efficiency caused by positional deviation. Summary of the Invention

[0005] This application provides a wireless charging system, method, external charging device, and storage medium to solve the problem that users have difficulty in determining the optimal charging position, resulting in alignment difficulties and low charging efficiency, thereby improving the alignment accuracy, energy transfer efficiency, operational safety, and user operation convenience of wireless charging.

[0006] In a first aspect, embodiments of this application provide a wireless charging system, including an implantable medical device and an external charging device for wireless power transmission with the implantable medical device. The wireless charging system further includes a voice prompt module and a control module, wherein the control module is configured to: The external charging device is controlled to operate in scanning mode to obtain a local distribution map of charging efficiency in the area where the implanted medical device is located; Based on the local distribution map of charging efficiency, at least one optimal charging target location is determined, and user navigation instructions corresponding to the optimal charging target location are generated; The voice prompt module is controlled to broadcast the navigation instructions to guide the user to move the external charging device to the optimal charging target location.

[0007] Secondly, embodiments of this application also provide an electronic device, the electronic device comprising: One or more processors; Storage device for storing one or more programs. When one or more programs are executed by one or more processors, the one or more processors perform the functions of any control module as described in any of the embodiments of this application.

[0008] Thirdly, embodiments of this application also provide a storage medium containing computer-executable instructions, which, when executed by a computer processor, are used to perform the functions of any control module as described in any embodiment of this application.

[0009] This application provides a wireless charging system, including an implantable medical device and an external charging device for wireless energy transfer with the implantable medical device. The wireless charging system also includes a voice prompt module and a control module. The control module is configured to: control the external charging device to operate in scanning mode to obtain a local distribution map of charging efficiency in the area where the implantable medical device is located, thereby achieving comprehensive perception and quantification of the charging efficiency of the surrounding space; determine at least one optimal charging target position based on the local distribution map of charging efficiency and generate corresponding user navigation instructions, thereby realizing the transformation from vague prompts to precise positioning and directional guidance; and finally control the voice prompt module to broadcast the navigation instructions to guide the user to move the external charging device to the optimal charging target position. This solves the problem that users have difficulty judging the best charging position, resulting in positioning difficulties and low charging efficiency, and improves the positioning accuracy, energy transfer efficiency, operational safety, and user operation convenience of wireless charging. Attached Figure Description

[0010] To more clearly illustrate the technical solutions of the exemplary embodiments of this application, the accompanying drawings used in describing the embodiments are briefly introduced below. Obviously, the accompanying drawings described are only a portion of the embodiments to be described in this application, and not all of them. For those skilled in the art, other drawings can be obtained from these drawings without any creative effort.

[0011] Figure 1 This is a schematic diagram of an implantable neurostimulator provided in an embodiment of this application; Figure 2 This is a schematic diagram of a stimulation electrode involved in an embodiment of this application; Figure 3 This is a schematic diagram of the implantable medical device involved in the embodiments of this application within the body of the subject; Figure 4 The diagram shown is a schematic diagram of a wireless charging system provided in an embodiment of the present invention; Figure 5 This is a flowchart illustrating the functional implementation of the control module of the wireless charging system provided in an embodiment of the present invention. Figure 6 This is a flowchart illustrating the functional implementation of the control module of the wireless charging system provided in an embodiment of the present invention. Figure 7 This is a flowchart illustrating the functional implementation of the control module of the wireless charging system provided in an embodiment of the present invention. Figure 8 This is a flowchart illustrating the execution logic of the control module of the wireless charging system involved in the embodiments of this application. Figure 9 This is a schematic flowchart of a wireless charging method provided in an embodiment of this application; Figure 10 This is a schematic diagram of an external charging device provided in an embodiment of the present invention. Detailed Implementation

[0012] The present application will now be described in further detail with reference to the accompanying drawings and embodiments. It should be understood that the specific embodiments described herein are merely illustrative of the application and not intended to limit it. Furthermore, it should be noted that, for ease of description, the accompanying drawings show only the parts relevant to the present application, not the entire structure.

[0013] Before introducing this technical solution, we can first illustrate the application scenarios. This technical solution can be applied to any scenario that requires precise alignment between an external charging device and an implantable medical device to achieve efficient wireless charging.

[0014] Below, we will first briefly describe one application area of ​​the embodiments of this application. An implantable neurostimulator, as a specific implantable medical device, mainly includes a stimulator implanted in the patient's body and a programmed device placed outside the patient's body. Existing neuromodulation technology mainly involves implanting electrodes at specific locations (i.e., target points) in the body through stereotactic surgery, and then having the stimulator implanted in the patient's body send discharge pulses to the target point via the electrodes, thereby modulating the electrical activity and function of the corresponding neural structures and networks, thereby improving symptoms and relieving pain. The stimulator can be any one of an implantable neurostimulation device, an implantable cardiac stimulation system (also known as a pacemaker), an implantable drug delivery system (IDDS), or a lead adapter. Implantable neurostimulation devices include deep brain stimulation (DBS), cortical nerve stimulation (CNS), spinal cord stimulation (SCS), sacral nerve stimulation (SNS), and vagus nerve stimulation (VNS).

[0015] In some embodiments, the stimulator may include an implantable pulse generator (IPG), electrode leads, and an extension lead disposed between the IPG and the electrode leads, enabling data interaction between the IPG and the electrode leads. The IPG is implanted within the patient's body. Responding to programmed commands from a programmable device, a power supply unit provides controllable electrical stimulation energy to the tissue, delivering one or two controllable electrical stimuli to specific areas of the tissue via the implanted extension lead and electrode leads. The extension lead, used in conjunction with the IPG, serves as a medium for transmitting electrical stimulation signals, conveying the signals generated by the IPG to the electrode leads. The electrode leads deliver electrical stimulation to specific areas of the tissue via their electrode contacts. The stimulator may have one or more electrode leads on one or both sides, with multiple electrode contacts on each lead.

[0016] In other embodiments, the stimulator may consist only of an electrical pulse stimulation device and electrode leads. In this case, the electrical pulse stimulation device may be embedded in the patient's skull, and the electrode leads may be implanted intracranially, with the electrical pulse stimulation device and electrode leads directly connected without the need for extension leads.

[0017] The electrode leads can be neurostimulation electrodes, delivering electrical stimulation to specific areas of tissue within the body via multiple electrode contacts. The stimulator has one or more electrode leads on one or both sides, each with multiple electrode contacts arranged uniformly or non-uniformly around the circumference of the lead. As an example, the electrode contacts can be arranged in a 4x3 array (a total of 12 contacts) around the circumference of the lead. The electrode contacts can serve as stimulation contacts and / or acquisition contacts. They can be in shapes such as sheets, rings, or dots.

[0018] In some possible approaches, the stimulated tissue can be the patient's brain tissue, and the stimulated site can be a specific area of ​​the brain tissue. Generally, the stimulated site differs depending on the patient's disease type, as well as the number of stimulation contacts (single-source or multi-source), the application of one or more specific electrical stimulation signals (single-channel or multi-channel), and the stimulation parameter data. It can be assumed that using multiple stimulation contacts (multi-source, multi-channel) will generate a larger amount of data compared to using a single-source, single-channel approach.

[0019] This application does not limit the applicable disease types, but can be any disease type applicable to deep brain stimulation (DBS), spinal cord stimulation (SCS), pelvic stimulation, gastric stimulation, peripheral nerve stimulation, or functional electrical stimulation. Among these, DBS can be used to treat or manage diseases including, but not limited to: spastic disorders (e.g., epilepsy), pain, migraines, mental illnesses (e.g., major depressive disorder (MDD)), bipolar disorder, anxiety disorders, post-traumatic stress disorder, mild depression, obsessive-compulsive disorder (OCD), behavioral disorders, mood disorders, memory disorders, mental state disorders, mobility disorders (e.g., essential tremor or Parkinson's disease), Huntington's disease, Alzheimer's disease, drug addiction, autism, or other neurological or psychiatric diseases and impairments.

[0020] The technical solutions provided in this embodiment of the invention are mainly applied to the field of implantable neurostimulation systems. A schematic diagram of the implantable neurostimulation system involved in this embodiment is shown below. Figure 1 ,like Figure 1 As shown, the implantable neurostimulation system mainly includes a battery module, a programming device, an electrical pulse stimulation device, stimulation electrodes, and electrode leads. The battery module receives and stores electrical energy emitted by an external power transmitter to power the programming device and the electrical pulse stimulation device. The electrical pulse stimulation device is implanted into the patient's body (e.g., in the chest cavity, skull, etc.). The electrode leads are connected to the electrical pulse stimulation device subcutaneously at one end, and the other end is equipped with a stimulation electrode. A schematic diagram of the stimulation electrodes can be found in [reference needed]. Figure 2 ,like Figure 2As shown, the stimulation electrode 1 includes at least one metal contact that outputs a stimulation source. These metal contacts can be circular rings 2 or directional electrodes 3 composed of multiple segmented electrode contacts. The stimulation electrode is partially implanted into a designated location in the patient's brain (such as nuclei or neural tissue associated with the condition). The doctor sends programming parameters to the electrical pulse stimulation device via a programming device. The electrical pulse stimulation device delivers electrical stimulation to at least one metal contact in the stimulation electrode through electrode wires, causing the at least one metal contact to generate an electric field to treat the corresponding condition.

[0021] In the process of wirelessly transmitting energy to implantable medical devices via external charging equipment, precise alignment between coils is crucial to ensuring charging efficiency. Figure 3 This is a schematic diagram of the implantable medical device 31 within the patient's body, as shown below. Figure 3 As shown, a medical device is implanted inside the human body, and a charger 32 (i.e., an external charging device) wirelessly charges it from outside the body. Because the center position of the implanted medical device cannot be determined, and the position of the coil inside the body is not visible, the two coils of the charger 32 and the implanted medical device 31 cannot be precisely aligned. Currently, the common approach is to increase the transmission power to compensate for energy loss caused by coil misalignment, or to use simple audible and visual prompts such as a buzzer to inform the user of abnormal charging status. If the charging power is too high, although it can temporarily compensate for the alignment deviation, it will significantly increase energy consumption and device heat generation, and may even pose safety hazards. If only audible and visual prompts are relied upon, the user lacks clear directional guidance and finds it difficult to judge the adjustment angle and optimal charging position, resulting in consistently low charging efficiency.

[0022] This invention aims to provide a wireless charging solution based on a charging efficiency distribution map and voice navigation. By scanning to obtain a local distribution map of charging efficiency, the optimal charging target location is accurately located and navigation instructions are generated to guide the user to move the external charging device to that location. This improves charging efficiency while avoiding blindly increasing power or relying on vague prompts, achieving precise alignment and dynamic guidance during the device charging process. This significantly enhances the user's personalized adaptation experience, charging safety, and optimizes the overall performance of implantable medical devices.

[0023] Example 1 This embodiment can be applied to any situation where precise alignment between an external charging device and an implantable medical device is required to achieve efficient wireless charging. Figure 4 The diagram shown is a schematic representation of a wireless charging system provided by an embodiment of the present invention. It includes an implantable medical device and an external charging device for wireless power transmission with the implantable medical device. The wireless charging system also includes a voice prompt module and a control module. Optionally, as a preferred embodiment, the voice prompt module and control module can be integrated into the external charging device.

[0024] Implantable medical devices refer to neurostimulators that are surgically implanted into the patient's body. They contain a metal casing and rely on wireless power transmission for power or charging. External charging devices are located outside the patient's body and deliver electrical energy to the implantable medical device via wireless power transmission. The voice prompt module is the functional unit in the wireless charging system responsible for converting navigation commands generated by the control module into voice signals and broadcasting them.

[0025] The control module refers to the logic processing unit in the wireless charging system responsible for executing scanning mode control, obtaining local distribution maps of charging efficiency, determining the optimal charging target location, and generating user navigation instructions.

[0026] It should be noted that the control module and voice prompt module provided in this embodiment have multiple deployment methods in terms of physical implementation: they can exist as a separate functional module completely independent of the external charging device and the implantable medical device, with independent hardware carrier and processing logic; they can also be integrated into the original controller of the external charging device and run as a functional unit of the controller; or they can be integrated into the original controller of the implantable medical device and deployed as part of the internal control architecture of the implantable device.

[0027] It can be understood that the wireless charging system provided in the embodiments of the present invention refers to a complete combination of devices for realizing wireless energy transmission. The combination of devices specifically includes an implantable medical device and an external charging device for wireless energy transmission with the implantable medical device. The wireless charging system also includes a voice prompt module and a control module.

[0028] Based on the above system structure, Figure 5 This is a flowchart illustrating the implementation function of the control module provided in an embodiment of the present invention, as shown below. Figure 5 As shown, the control module of the wireless charging system provided in this embodiment of the invention is configured to include the following steps: S110, Control the external charging device to operate in scanning mode to obtain a local distribution map of charging efficiency for the area where the implantable medical device is located.

[0029] The scanning mode refers to a working state in which the external charging device operates to obtain charging efficiency information. In this state, the external charging device will actively transmit signals or adjust its working parameters to detect the energy transmission effect at different locations.

[0030] The area where the implantable medical device is located refers to the spatial range that surrounds and includes the implantable medical device and is capable of establishing a wireless power transmission connection with the external charging device.

[0031] Among them, the local distribution map of charging efficiency refers to the graphic information obtained by scanning mode, which reflects the distribution of high and low wireless energy transmission efficiency at different locations within the area where the implantable medical device is located. This graphic information can intuitively show the pattern of charging efficiency changing with location.

[0032] Specifically, the control module can issue commands to start the external charging device and run it in scanning mode. Through the detection and data acquisition process in this mode, a local distribution map of charging efficiency can be obtained, which can describe the wireless power transmission efficiency at different locations within the area where the implanted medical device is located.

[0033] In a specific example, the control module instructs the external charging device to start scanning mode. The user (doctor or patient) holds the external charging device close to the relevant location of the patient (i.e., the outer surface of the implanted medical device) and moves it slowly. The external charging device then gradually changes its position within its movable plane range and tests the wireless power transmission efficiency between itself and the implanted medical device at each stop point. By recording the coordinates of each location point and the corresponding charging efficiency value, these data are finally collected to form a complete local distribution map of charging efficiency reflecting the charging efficiency of various locations in the area where the implanted medical device is located.

[0034] It should be noted that this step can be performed by a doctor or the patient's family after the implantation surgery of the implantable medical device. It is a one-time pre-operation, that is, the local distribution map of charging efficiency is constructed before the first formal charging control. After the construction of the distribution map is completed, the map is stored in the memory of the external charging device. Before each charging, it is only necessary to retrieve the map for automatic calibration of the charging position.

[0035] Of course, as the implanted medical device remains in the patient's body for longer periods, the patient also needs to perform daily activities. Due to factors such as the patient's body posture and movement, the position of the implanted medical device in the patient's body may change, such as deflection. This may reduce the reliability and accuracy of the previously stored or constructed local distribution map of charging efficiency. Therefore, doctors or patients can be reminded regularly to update the local distribution map of charging efficiency to improve the reliability of position calibration during each charge, thereby improving charging efficiency and the user's charging experience.

[0036] S120. Based on the local distribution map of charging efficiency, determine at least one optimal charging target location and generate user navigation instructions corresponding to the optimal charging target location.

[0037] The optimal charging target location refers to one or more specific locations within a region that have the highest charging efficiency, identified based on the local distribution map of charging efficiency.

[0038] Among them, user navigation instructions refer to guiding information used to instruct users to move the external charging device to the aforementioned optimal charging target location.

[0039] Specifically, the control module can analyze and identify the acquired local distribution map of charging efficiency, find one or more specific locations with the highest charging efficiency as the optimal charging target locations, and then create corresponding user navigation instructions to guide the user to move the external charging device based on the spatial orientation information of these optimal charging target locations.

[0040] For example, the control module analyzes the acquired local distribution map of charging efficiency, identifies the area with the highest charging efficiency value in the map, determines the center point of that area as an optimal charging target location, and then generates a user navigation command containing movement direction and distance information based on the relative orientation between the current location of the external charging device and this optimal charging target location. For example, the command might state that moving the external charging device a certain distance in a certain direction will reach the optimal charging target location.

[0041] S130: Control the voice prompt module to broadcast navigation instructions to guide the user to move the external charging device to the optimal charging target location.

[0042] Specifically, the control module can trigger the voice prompt module to play the generated user navigation instructions in a voice manner. The user can obtain operation instructions by listening to the voice information and manually adjust the spatial position of the external charging device according to the instructions until the external charging device is finally placed in the determined optimal charging target position.

[0043] For example, after the control module determines the optimal charging target location and generates the corresponding user navigation command, the control module activates the voice prompt module. The voice prompt module broadcasts the voice command to move the external charging device 5cm to the right. After hearing the navigation command, the user moves the external charging device 5cm to the right by hand according to the voice prompt, so that the external charging device reaches the optimal charging target location.

[0044] This application provides a wireless charging system, including an implantable medical device and an external charging device for wireless energy transfer with the implantable medical device. The wireless charging system also includes a voice prompt module and a control module. The control module is configured to: control the external charging device to operate in scanning mode to obtain a local distribution map of charging efficiency in the area where the implantable medical device is located, thereby achieving comprehensive perception and quantification of the charging efficiency of the surrounding space; determine at least one optimal charging target position based on the local distribution map of charging efficiency and generate corresponding user navigation instructions, thereby realizing the transformation from vague prompts to precise positioning and directional guidance; and finally control the voice prompt module to broadcast the navigation instructions to guide the user to move the external charging device to the optimal charging target position. This solves the problem that users have difficulty judging the best charging position, resulting in positioning difficulties and low charging efficiency, and improves the positioning accuracy, energy transfer efficiency, operational safety, and user operation convenience of wireless charging.

[0045] In this embodiment, optionally, the control module is further configured to: store multiple local distribution maps of charging efficiency corresponding to different transmission power levels; during the formal charging phase, according to the target transmission power level corresponding to the current charging power, call the corresponding target local distribution map of charging efficiency, and generate corresponding user navigation instructions based on the target local distribution map of charging efficiency.

[0046] In practical applications, multiple local distribution maps of charging efficiency can be pre-stored in the memory of the wireless charging system. Each map is associated with a preset transmission power level used by the external charging device when it is working in scanning mode. When the external charging device enters the formal charging process of actually transmitting wireless energy to the implantable medical device, the transmission power level is determined according to the charging power used at this time, and the local distribution map of charging efficiency corresponding to that level is retrieved from the memory as the target local distribution map of charging efficiency. Generating corresponding user navigation instructions based on the target local distribution map of charging efficiency means analyzing the target local distribution map of charging efficiency to determine the optimal charging target position and creating user navigation instructions to guide the user to move the external charging device.

[0047] For example, the wireless charging system's memory pre-stores three partial distribution maps of charging efficiency corresponding to low power, medium power, and high power levels, respectively. When entering the formal charging stage and the external charging device is currently charging at medium power, the system identifies the target transmission power level corresponding to the current charging power as medium power. It then retrieves the target partial distribution map of charging efficiency corresponding to the medium power level from the memory. The control module then analyzes the target partial distribution map of charging efficiency to determine the optimal charging target position under the power condition and generates corresponding user navigation instructions accordingly.

[0048] In this way, by pre-storing multiple local distribution maps of charging efficiency corresponding to different transmission power levels, and calling the corresponding target local distribution map of charging efficiency based on the target transmission power level corresponding to the current charging power used during the formal charging phase, the generated user navigation instructions can accurately reflect the spatial distribution characteristics of charging efficiency under that specific power level. This ensures that the location of the external charging device that the user is guided to is the truly optimal charging target location under the current actual charging power conditions, avoiding the problem of the original optimal location becoming invalid due to changes in charging power, and significantly improving the adaptability and charging efficiency of the wireless charging system under different operating power levels.

[0049] Example 2 Based on the foregoing embodiments, this embodiment will provide a more detailed description of S110 and S120, and the specific implementation methods can be found in the technical solution of this embodiment. Technical terms that are the same as or corresponding to those in the above embodiments will not be repeated here.

[0050] Figure 6 This is a flowchart illustrating the implementation function of the control module provided in an embodiment of the present invention, as shown below. Figure 6 As shown, the control module of the wireless charging system provided in this embodiment of the invention is configured to include the following steps: S210: Control the external charging device to work in scanning mode, and guide the user to move the external charging device along a preset path through the voice prompt module.

[0051] The preset path refers to moving the external charging device according to a pre-planned or set movement trajectory.

[0052] In practical applications, the control module activates the scanning mode of the external charging device and simultaneously uses the voice prompt module to issue voice instructions to the user, guiding the user to manually operate the external charging device to move its position according to a pre-planned trajectory, so as to collect charging efficiency data at different locations during the movement.

[0053] In this embodiment, optionally, the preset path is a circular path, and the control module is configured to guide the user to move the external charging device along the circular path through the voice prompt module.

[0054] As an alternative implementation method, the pre-set movement trajectory can be set as a circular path, and the control module has corresponding function settings, which can instruct the user to move the external charging device along this circular path through the voice prompt module.

[0055] S220. Based on the inertial measurement unit built into the external charging device, acquire the relative displacement data of the external charging device during the movement process.

[0056] Inertial measurement units (IMUs) are sensor components used to sense and measure the motion state and orientation of the device. Relative displacement data refers to information describing the changes in position and orientation of the external charging device relative to its starting point during movement.

[0057] The relative coordinate position refers to the spatial position identifier used to represent the various points on the movement path of the external charging device.

[0058] Specifically, an inertial measurement unit (IMU) sensor component installed inside the external charging device can be used to sense and collect information such as the change in position, direction of movement, and distance of movement of the external charging device as the user moves along a preset path in real time, thereby obtaining relative displacement data describing the trajectory of the device.

[0059] S230. Based on the relative displacement data, establish the relative coordinate positions of the external charging device in different spatial locations.

[0060] Specifically, using the starting point as a reference, the relative displacement data of the acquired external charging device during its movement can be used to calculate and convert the data to assign a set of coordinate values ​​based on this reference to each spatial point traversed by the external charging device, thereby forming a series of relative coordinate positions used to identify these spatial points.

[0061] S240. Obtain the real-time charging efficiency of the external charging device at each relative coordinate position.

[0062] Real-time charging efficiency refers to the instantaneous wireless energy transfer efficiency value measured when the external charging device performs energy transfer tests at each relative coordinate position.

[0063] In this embodiment, as the external charging device moves and stops at each established relative coordinate position, the instantaneous wireless power transmission efficiency value at that specific location point is measured and recorded, thereby obtaining a set of real-time charging efficiency data corresponding to each relative coordinate position.

[0064] The method for determining real-time charging efficiency includes: acquiring the transmission power of the external charging device in scanning mode and the receiving power of the implantable medical device; calculating the ratio of the receiving power to the transmission power as the real-time charging efficiency.

[0065] In practical applications, the real-time charging efficiency value at each measurement point is calculated as follows: by obtaining the transmission power output by the external charging device when it is working in scanning mode at that point, and at the same time obtaining the power actually received by the implantable medical device, the ratio obtained by dividing the received power by the transmission power is defined as the real-time charging efficiency at that point.

[0066] S250. Based on the relative coordinate positions and their corresponding real-time charging efficiencies, a local distribution map of charging efficiency is constructed.

[0067] Specifically, the acquired relative coordinate positions can be integrated with the real-time charging efficiency values ​​measured at these positions. Through data processing, a graphical representation of the relationship between different spatial points and charging efficiency within the scanned area can be formed, namely, a local distribution map of charging efficiency.

[0068] S260. Identify the efficiency peak region in the local distribution map of charging efficiency.

[0069] Among them, the efficiency peak region refers to one or more local high value ranges in the local distribution map of charging efficiency where the charging efficiency value is significantly higher than that of the surrounding area.

[0070] In practical applications, data analysis can be performed on the completed local distribution map of charging efficiency. Algorithms can be used to detect and mark one or more local high-value ranges in the map where the charging efficiency value is significantly higher than that of the surrounding area, thereby determining the location of these areas with the highest charging efficiency characteristics.

[0071] S270. Based on the coordinates of the efficiency peak region in the local distribution map, determine at least one candidate location.

[0072] Candidate locations refer to one or more possible optimal charging locations initially determined based on the coordinates of the efficiency peak region in the local distribution map.

[0073] Specifically, based on the coordinate information of the identified efficiency peak regions on the local distribution map of charging efficiency, one or more specific spatial points in these regions can be selected as preliminary possible optimal charging locations, i.e., candidate locations.

[0074] S280. If a candidate location is identified, the candidate location is determined as the optimal charging target location; if multiple candidate locations are identified, the final optimal charging target location is selected from the multiple candidate locations according to the preset decision rules and at least one auxiliary decision parameter.

[0075] Among them, the preset decision rule refers to the pre-set logical judgment criteria used to make a final selection from multiple candidate positions. The auxiliary decision parameters refer to information on other influencing factors besides charging efficiency that need to be considered when applying the preset decision rule.

[0076] In practical applications, when only one candidate location is obtained from the efficiency peak area, this candidate location is directly taken as the optimal charging target location to guide the user. When two or more candidate locations are obtained from the efficiency peak area, it is necessary to use pre-set logical judgment criteria and refer to one or more influencing factors other than charging efficiency to comprehensively evaluate and compare these candidate locations, and select one as the final optimal charging target location.

[0077] In this embodiment, optionally, the auxiliary decision parameters may include the transmission power value of the external charging device at each candidate location, and the control module is configured to: select the candidate location with the smallest transmission power value as the optimal charging target location according to the preset decision rules.

[0078] As an alternative approach, the auxiliary decision-making parameters can be specifically set as the output transmission power value of the external charging device when transmitting energy at each candidate location. Based on this, the control module can select the location with the lowest transmission power value from among multiple candidate locations as the final optimal charging target location according to the pre-set logical judgment criteria.

[0079] In this embodiment, optionally, the auxiliary decision parameters may include the received power value of the implantable medical device at each candidate location, and the control module is configured to: select the candidate location with the largest received power value as the optimal charging target location according to the preset decision rules.

[0080] As an alternative approach, the auxiliary decision-making parameters can be specifically set as the actual received power value obtained by the implantable medical device when transmitting energy at each candidate location. Based on this, the control module can select the location with the highest received power value from multiple candidate locations as the final optimal charging target location according to the pre-set logical judgment criteria.

[0081] In this embodiment, optionally, the auxiliary decision parameters may include the temperature data of the external charging device when it is working at each candidate location. The control module is configured to: select the candidate location with the lowest heat generation represented by the temperature data as the optimal charging target location according to the preset decision rules.

[0082] As an alternative approach, the auxiliary decision-making parameters can be specifically set as the temperature data measured by the external charging device when it operates at each candidate location. Based on this, the control module selects the location with the lowest temperature reading from among the multiple candidate locations as the final optimal charging target location, according to the pre-set logical judgment criteria.

[0083] Based on the above embodiments, the control module is configured to sequentially determine one or more auxiliary decision parameters according to a preset priority order in order to select the final optimal charging target location.

[0084] Optionally, the preset priority order can be: first, filter based on the received power value at the candidate location; if it cannot be distinguished based on the received power value, then filter further based on the transmitted power value at the candidate location; if it still cannot be distinguished, then filter further based on the degree of heat generation represented by the temperature data collected at the candidate location.

[0085] In this embodiment, if the optimal charging target location cannot be selected from multiple candidate locations by comparing the received power values, the transmit power value at the candidate location is used as the second priority criterion for further screening. If it is still impossible to distinguish, further screening is performed based on the degree of heat generated by the temperature data collected at the candidate location. This means that if multiple candidate locations still cannot be selected after comparing the received power values ​​and the transmit power values, the degree of heat generated by the temperature data collected at the candidate location is used as the third priority criterion for final screening.

[0086] S290: The voice prompt module broadcasts navigation instructions to guide the user to move the external charging device to the optimal charging target location.

[0087] The technical solution of this application embodiment, when acquiring a local distribution map of charging efficiency, guides the user to move the external charging device along a preset path through a voice prompt module; acquires relative displacement data of the external charging device during movement based on the inertial measurement unit built into the external charging device; establishes relative coordinates of the external charging device at different spatial positions based on the relative displacement data; acquires the real-time charging efficiency of the external charging device at each relative coordinate position; and constructs a local distribution map of charging efficiency based on each relative coordinate position and its corresponding real-time charging efficiency. The technical solution provided in this embodiment guides the user to move the device along a preset path through voice prompts, and combines the acquisition of relative displacement data by the inertial measurement unit to establish accurate relative coordinates, while simultaneously collecting real-time charging efficiency at each position. This allows for the efficient and accurate construction of a local distribution map of charging efficiency reflecting the spatial distribution of charging efficiency, providing a reliable data foundation for subsequently locating the optimal charging position.

[0088] The technical solution of this application embodiment determines at least one optimal charging target location through the following methods: identifying efficiency peak regions in a local distribution map of charging efficiency; determining at least one candidate location based on the coordinates of the efficiency peak regions in the local distribution map; if a candidate location is identified, determining the candidate location as the optimal charging target location; if multiple candidate locations are identified, selecting the final optimal charging target location from the multiple candidate locations according to preset decision rules and at least one auxiliary decision parameter. The technical solution provided in this embodiment determines candidate locations by identifying efficiency peak regions in a local distribution map of charging efficiency, and introduces preset decision rules and auxiliary decision parameters for comprehensive screening when multiple candidates exist, thereby ensuring that the finally selected optimal charging target location is not only the region with the highest charging efficiency, but also takes into account other key influencing factors, improving the accuracy and practicality of optimal location determination.

[0089] Example 3 Based on the foregoing embodiments, the triggering timing of the technical solution provided in this embodiment can be further explained in detail. In addition, this embodiment will also provide a detailed explanation of S130, and its specific implementation can be found in the technical solution of this embodiment. Technical terms that are the same as or corresponding to those in the above embodiments will not be repeated here.

[0090] Figure 7 This is a flowchart illustrating the implementation function of the control module provided in an embodiment of the present invention, as shown below. Figure 7 As shown, the control module of the wireless charging system provided in this embodiment of the invention is configured to include the following steps: S310. In navigation mode, if the currently detected real-time charging efficiency is lower than the charging efficiency benchmark value, a local distribution map of charging efficiency for the area where the implantable medical device is located is obtained.

[0091] Navigation mode refers to a working state in a wireless charging system used to guide users to move external charging devices to the optimal charging target location.

[0092] The charging efficiency benchmark value refers to a preset charging efficiency reference value, which is used to compare with the currently detected real-time charging efficiency to determine whether navigation operation is required.

[0093] In this embodiment, in navigation mode, when the monitored current charging efficiency value is less than the preset charging efficiency benchmark value, the system automatically starts a series of subsequent operation processes, including obtaining a local distribution map of charging efficiency, determining the optimal charging target location, and generating corresponding user navigation instructions.

[0094] Specifically, the method for determining the charging efficiency benchmark value may include the following steps: (1) In the initialization mode, record multiple real-time charging efficiency values ​​generated by the user during the movement of the external charging device within a preset time.

[0095] In practical applications, during the initial setup of the system, the control module collects and stores multiple instantaneous wireless energy transmission efficiency values ​​measured at various moments when the user manually moves the external charging device within a pre-set time period.

[0096] (2) Sort multiple real-time charging efficiency values ​​according to their numerical values, and select the efficiency value at the preset percentile position as the charging efficiency benchmark value.

[0097] The preset percentile position refers to the ranking position of multiple real-time charging efficiency values ​​after sorting them by numerical value, based on a pre-defined percentage value. For example, the position at the 90% mark.

[0098] In practical applications, all real-time charging efficiency values ​​recorded in the initialization mode are arranged in ascending or descending order. Then, the sorting position corresponding to the pre-set percentage value is determined, and the real-time charging efficiency value in that position is taken as the charging efficiency benchmark value.

[0099] In this embodiment, optionally, the control module is further configured to: determine a sliding window for storing a number of consecutive real-time charging efficiency values; in navigation mode, if the currently detected real-time charging efficiency value is higher than the stored maximum charging efficiency value, then update the stored maximum charging efficiency value, and recalculate and update the charging efficiency benchmark value according to the updated set of efficiency values ​​in the sliding window.

[0100] This can be understood as follows: as an optional solution, the control module additionally provides a data buffer specifically for storing the latest real-time charging efficiency values ​​in chronological order. When the system is in navigation mode, if the latest measured real-time charging efficiency value exceeds the previously saved highest efficiency record, this new value is saved as the maximum charging efficiency. Simultaneously, based on all updated real-time charging efficiency values ​​currently contained within the sliding window, the system recalculates and replaces the original charging efficiency benchmark value with the new value. The purpose of this setup is to dynamically track recent charging efficiency data through a sliding window and update the maximum and benchmark charging efficiency values ​​in real time. This allows the benchmark charging efficiency value to adaptively reflect changes in efficiency levels under the current charging environment, ensuring that navigation trigger conditions are always based on the latest efficiency status. This improves the system's adaptability to changes in charging conditions and the accuracy of navigation initiation.

[0101] S320. Based on the local distribution map of charging efficiency, determine at least one optimal charging target location and generate user navigation instructions corresponding to the optimal charging target location.

[0102] Based on the above embodiments, optionally, the control module is further configured to: record multiple historical optimal location data that were determined as the optimal charging target location during the historical charging process; and make decisions by referring to the historical optimal location data when determining the current optimal charging target location.

[0103] Among them, historical optimal location data refers to the relevant information that was determined by the system as the optimal charging target location and recorded and saved during previous charging processes. This information may include the spatial coordinates of these locations, the corresponding charging efficiency values, and related auxiliary decision-making parameters.

[0104] Specifically, recording multiple historical optimal location data points, which were determined as the optimal charging target location during historical charging processes, refers to an optional solution where, in addition to the previously described implementation method, the control module additionally stores information related to the ultimately selected optimal charging target location during each charging process. This information constitutes multiple historical optimal location data points. When determining the current optimal charging target location, referring to historical optimal location data for decision-making means that when the system needs to determine the optimal charging target location for this charging session, it compares or comprehensively considers the currently measured or analyzed candidate locations with the recorded historical optimal location data, utilizing past successful positioning experience to assist in the current selection and judgment process. In this way, by recording and referring to historical optimal location data, the system can optimize current decisions using historical experience, such as prioritizing historically efficient charging locations, thereby improving the accuracy and efficiency of determining the optimal charging target location and reducing the time and resource consumption required for repeated exploration.

[0105] S330. Based on the coordinates of the optimal charging target position in the local distribution map, determine the relative displacement direction of the optimal charging target position relative to the current position of the external charging device.

[0106] The relative displacement direction refers to the direction in which the external charging device needs to move, calculated based on the coordinates of the optimal charging target location in the local distribution map and the coordinates of the current location of the external charging device.

[0107] Specifically, the coordinates of the optimal charging target location marked on the local distribution map of charging efficiency can be compared and calculated with the coordinates of the current location of the external charging device to determine the direction of movement required to move from the current location of the external charging device to the optimal charging target location.

[0108] S340. Generate voice and text commands containing orientation description information based on the relative displacement direction, as user navigation commands.

[0109] Among them, directional description information refers to the directional indication content that can be understood by the user and expressed in language to indicate the relative displacement direction. For example, directional description information can be directional words such as front, back, left, and right. Voice text commands refer to converting directional description information into text format commands suitable for voice broadcast, which serve as the specific content of the user's navigation instructions.

[0110] In this embodiment, the calculated relative displacement direction can be converted into text content expressed in specific directional terms, such as moving to the left or moving to the right. Then, this text content containing directional information can be made into a text format suitable for voice broadcast, ultimately forming user navigation instructions to guide user operation.

[0111] For example, the orientation description information can be an up, down, left, and right orientation description with reference to the current position of the external charging device; the orientation description information can also be a clock orientation description with reference to the current position of the external charging device as the origin.

[0112] S350: After the voice prompt module broadcasts navigation instructions to guide the user to move the external charging device to the optimal charging target location, it controls the external charging device to switch from scanning mode to formal charging mode for charging.

[0113] Among them, charging mode refers to the formal working state in which the external charging device performs actual wireless energy transmission to the implantable medical device.

[0114] In this embodiment, after the user completes the operation according to the user navigation instructions broadcast by the voice prompt module and places the external charging device at the determined optimal charging target position, the control module issues an instruction to make the external charging device exit the scanning mode working state used for detection and positioning, and enter the formal charging mode for actual wireless power transmission to the implantable medical device, and start performing the charging function.

[0115] The technical solution of this application, when generating user navigation instructions, determines the relative displacement direction of the optimal charging target location relative to the current location of the external charging device based on the coordinates of the optimal charging target location in the local distribution map; and generates a voice text instruction containing directional description information based on the relative displacement direction, which serves as the user navigation instruction. The technical solution provided in this embodiment converts the coordinate difference between the optimal charging target location and the current location of the external charging device into a specific relative displacement direction, and further generates a voice text instruction containing directional description information, thereby transforming abstract coordinate data into intuitive voice navigation information that is easy for users to understand and execute, effectively improving navigation accuracy and user experience.

[0116] Next, a specific example will be used to illustrate the implementation process of the control module of the wireless charging system in this embodiment. Figure 8 This is a flowchart illustrating a specific implementation process of the control module for a wireless charging system. Figure 8 As shown, when a user uses the device for the first time or when the system detects that both the stored baseline and maximum charging efficiency values ​​are zero, the initialization process is initiated. The voice prompt module announces the instruction "Initialization alignment begins, please move clockwise," guiding the user to slowly move the external charging device clockwise around the area where the implanted medical device is located. During this process, the system records the real-time charging efficiency value every two seconds and stores it in the buffer for one minute. After the timeout, the system sorts all the collected real-time charging efficiency values, selects the efficiency value at the preset percentile position as the charging efficiency baseline value, and simultaneously records the maximum efficiency value that occurred during this movement. Then, the voice prompt module announces "Initialization successful." In subsequent navigation mode, the system monitors the current charging efficiency in real time. If the current efficiency is found to be lower than the stored charging efficiency benchmark value, the navigation process is triggered, and the voice prompt module announces "Alignment begins, please move according to the direction indicated by the voice prompt." Based on the relative displacement direction between the optimal charging target position determined by the acquired local distribution map of charging efficiency and the current position of the external charging device, the system retrieves the voice library to announce the specific direction to guide the user's movement. During the user's movement, the system continuously monitors the real-time charging efficiency. Once the efficiency value exceeds the charging efficiency benchmark value, it continues to determine whether it exceeds the stored maximum efficiency value. If it does, the maximum efficiency value and the charging efficiency benchmark value are updated. When the user moves the external charging device to the final position where the current efficiency meets the conditions, the voice prompt module announces "Alignment successful, please do not move the charger, charging begins." The system then controls the external charging device to switch from scanning mode to formal charging mode to begin charging, and the process ends.

[0117] Example 4 Figure 9 This is a schematic flowchart of a wireless charging method provided in an embodiment of this application. This embodiment is applicable to various situations requiring wireless charging control of implantable medical devices, such as... Figure 9 As shown, the wireless charging method provided in this embodiment of the invention includes the following steps: S410: Control the external charging device to operate in scanning mode to obtain a local distribution map of charging efficiency for the area where the implantable medical device is located.

[0118] Specifically, the control module can issue commands to start the external charging device and run it in scanning mode. Through the detection and data acquisition process in this mode, a local distribution map of charging efficiency can be obtained, which can describe the wireless power transmission efficiency at different locations within the area where the implanted medical device is located.

[0119] S420. Based on the local distribution map of charging efficiency, determine at least one optimal charging target location and generate user navigation instructions corresponding to the optimal charging target location.

[0120] Specifically, the control module can analyze and identify the acquired local distribution map of charging efficiency, find one or more specific locations with the highest charging efficiency as the optimal charging target locations, and then create corresponding user navigation instructions to guide the user to move the external charging device based on the spatial orientation information of these optimal charging target locations.

[0121] For example, the control module analyzes the acquired local distribution map of charging efficiency, identifies the area with the highest charging efficiency value in the map, determines the center point of that area as an optimal charging target location, and then generates a user navigation command containing movement direction and distance information based on the relative orientation between the current location of the external charging device and this optimal charging target location. For example, the command might state that moving the external charging device a certain distance in a certain direction will reach the optimal charging target location.

[0122] S430 controls the voice prompt module to broadcast navigation instructions to guide the user to move the external charging device to the optimal charging target location.

[0123] Specifically, the control module can trigger the voice prompt module to play the generated user navigation instructions in a voice manner. The user can obtain operation instructions by listening to the voice information and manually adjust the spatial position of the external charging device according to the instructions until the external charging device is finally placed in the determined optimal charging target position.

[0124] For example, after the control module determines the optimal charging target location and generates the corresponding user navigation command, the control module activates the voice prompt module. The voice prompt module broadcasts the voice command to move the external charging device 5cm to the right. After hearing the navigation command, the user moves the external charging device 5cm to the right by hand according to the voice prompt, so that the external charging device reaches the optimal charging target location.

[0125] This application provides a wireless charging method, including an implantable medical device and an external charging device for wireless energy transfer with the implantable medical device. The wireless charging system also includes a voice prompt module and a control module. The control module is configured to: control the external charging device to operate in scanning mode to obtain a local distribution map of charging efficiency in the area where the implantable medical device is located, thereby achieving comprehensive perception and quantification of the charging efficiency of the surrounding space; determine at least one optimal charging target position based on the local distribution map of charging efficiency and generate corresponding user navigation instructions, thereby realizing the transformation from vague prompts to precise positioning and directional guidance; and finally control the voice prompt module to broadcast the navigation instructions to guide the user to move the external charging device to the optimal charging target position. This solves the problem that users have difficulty judging the best charging position, resulting in positioning difficulties and low charging efficiency, and improves the positioning accuracy, energy transfer efficiency, operational safety, and user operation convenience of wireless charging.

[0126] Example 5 Figure 10 The diagram illustrates an external charging device according to an embodiment of the present invention. The external charging device includes a voice prompt module and a control module. The external charging device wirelessly transmits energy to an implantable medical device. The control module is configured to: control the external charging device to operate in scanning mode to obtain a local distribution map of charging efficiency in the area where the implantable medical device is located; determine at least one optimal charging target location based on the local distribution map of charging efficiency, and generate a user navigation command corresponding to the optimal charging target location; and control the voice prompt module to broadcast the navigation command to guide the user to move the external charging device to the optimal charging target location.

[0127] The external charging device provided in this application embodiment has a control module configured to: control the external charging device to operate in scanning mode to obtain a local distribution map of charging efficiency in the area where the implantable medical device is located, thereby achieving comprehensive perception and quantification of the charging efficiency of the surrounding space; determine at least one optimal charging target position based on the local distribution map of charging efficiency and generate corresponding user navigation instructions, thereby realizing the transformation from vague prompts to precise positioning and directional guidance; and finally control the voice prompt module to broadcast the navigation instructions to guide the user to move the external charging device to the optimal charging target position, solving the problem that users have difficulty judging the best charging position, resulting in positioning difficulties and low charging efficiency, and improving the positioning accuracy, energy transmission efficiency, operational safety, and user operation convenience of wireless charging.

[0128] Example 6 This application embodiment also provides a storage medium containing computer-executable instructions, which, when executed by a computer processor, are used to perform the functions of a control module of a wireless charging system. The wireless charging system includes an implantable medical device and an external charging device for wireless power transfer with the implantable medical device. The wireless charging system further includes a voice prompt module and a control module, the control module being configured to: The external charging device is controlled to operate in scanning mode to obtain a local distribution map of charging efficiency in the area where the implanted medical device is located; Based on the local distribution map of charging efficiency, at least one optimal charging target location is determined, and user navigation instructions corresponding to the optimal charging target location are generated; The voice prompt module is controlled to broadcast the navigation instructions to guide the user to move the external charging device to the optimal charging target location.

[0129] The computer storage medium in this application embodiment can be any combination of one or more computer-readable media. A computer-readable medium can be a computer-readable signal medium or a computer-readable storage medium. A computer-readable storage medium can be, for example,—but not limited to—an electrical, magnetic, optical, electromagnetic, infrared, or semiconductor system, apparatus, or device, or any combination thereof. More specific examples of computer-readable storage media (a non-exhaustive list) include: an electrical connection having one or more wires, a portable computer disk, a hard disk, random access memory (RAM), read-only memory (ROM), erasable programmable read-only memory (EPROM or flash memory), optical fiber, portable compact disk read-only memory (CD-ROM), optical storage device, magnetic storage device, or any suitable combination thereof. In this document, a computer-readable storage medium can be any tangible medium that contains or stores a program that can be used by or in conjunction with an instruction execution system, apparatus, or device.

[0130] Computer-readable signal media may include data signals propagated in baseband or as part of a carrier wave, carrying computer-readable program code. Such propagated data signals may take various forms, including but not limited to electromagnetic signals, optical signals, or any suitable combination thereof. Computer-readable signal media may also be any computer-readable medium other than computer-readable storage media, capable of sending, propagating, or transmitting programs for use by or in connection with an instruction execution system, apparatus, or device.

[0131] The program code contained on a computer-readable medium may be transmitted using any suitable medium, including—but not limited to—wireless, wire, optical fiber, RF, etc., or any suitable combination thereof.

[0132] Computer program code for performing the operations of the embodiments of this application can be written in one or more programming languages ​​or a combination thereof. Programming languages ​​include object-oriented programming languages—such as Java, Smalltalk, and C++—and conventional procedural programming languages—such as C or similar programming languages. The program code can be executed entirely on the user's computer, partially on the user's computer, as a standalone software package, partially on the user's computer and partially on a remote computer, or entirely on a remote computer or server. In cases involving remote computers, the remote computer can be connected to the user's computer via any type of network—including a local area network (LAN) or a wide area network (WAN)—or can be connected to an external computer (e.g., via the Internet using an Internet service provider).

[0133] Note that the above description is merely a preferred embodiment and the technical principles employed in this application. Those skilled in the art will understand that this application is not limited to the specific embodiments described herein, and various obvious changes, readjustments, and substitutions can be made without departing from the scope of protection of this application. Therefore, although this application has been described in detail through the above embodiments, this application is not limited to the above embodiments. Many other equivalent embodiments may be included without departing from the concept of this application, and the scope of this application is determined by the scope of the appended claims.

Claims

1. A wireless charging system, comprising an implantable medical device and an external charging device for wireless power transmission with the implantable medical device, characterized in that, The wireless charging system also includes a voice prompt module and a control module, wherein the control module is configured to: The external charging device is controlled to operate in scanning mode to obtain a local distribution map of charging efficiency in the area where the implanted medical device is located; Based on the local distribution map of charging efficiency, at least one optimal charging target location is determined, and user navigation instructions corresponding to the optimal charging target location are generated; The voice prompt module is controlled to broadcast the navigation instructions to guide the user to move the external charging device to the optimal charging target location.

2. The wireless charging system according to claim 1, characterized in that, The control module is configured to obtain the local distribution map of charging efficiency in the following manner: The voice prompt module guides the user to move the external charging device along a preset path. Based on the inertial measurement unit built into the external charging device, the relative displacement data of the external charging device during the movement process is obtained; Based on the relative displacement data, the relative coordinate positions of the external charging device in different spatial locations are established; Obtain the real-time charging efficiency of the external charging device at each of the relative coordinate positions; Based on the relative coordinate positions and their corresponding real-time charging efficiencies, a local distribution map of the charging efficiency is constructed.

3. The wireless charging system according to claim 2, characterized in that, The preset path is a circular path, and the control module is configured to guide the user to move the external charging device along the circular path through the voice prompt module.

4. The wireless charging system according to claim 2, characterized in that, The control module is also configured to: The transmitting power of the external charging device in scanning mode and the receiving power of the implantable medical device are obtained; The ratio of the received power to the transmitted power is calculated as the real-time charging efficiency.

5. The wireless charging system according to any one of claims 1 to 4, characterized in that, The control module is configured to determine at least one optimal charging target location in the following manner: Identify the efficiency peak region in the local distribution map of the charging efficiency; Based on the coordinates of the efficiency peak region in the local distribution map, at least one candidate location is determined; If a candidate location is identified, the candidate location is determined as the optimal charging target location; If multiple candidate locations are identified, the final optimal charging target location is selected from the multiple candidate locations according to the preset decision rules and at least one auxiliary decision parameter.

6. The wireless charging system according to claim 5, characterized in that, The auxiliary decision parameters include the transmission power value of the external charging device at each of the candidate locations, and the control module is configured to: select the candidate location with the smallest transmission power value as the optimal charging target location according to the preset decision rules.

7. The wireless charging system according to claim 5, characterized in that, The auxiliary decision parameters include the received power value of the implantable medical device at each of the candidate locations, and the control module is configured to: select the candidate location with the largest received power value as the optimal charging target location according to the preset decision rules.

8. The wireless charging system according to claim 5, characterized in that, The auxiliary decision parameters include temperature data of the external charging device when it is working at each of the candidate locations. The control module is configured to: select the candidate location with the lowest heat generation represented by the temperature data as the optimal charging target location according to the preset decision rules.

9. The wireless charging system according to claim 5, characterized in that, The control module is configured to sequentially determine one or more of the auxiliary decision parameters according to a preset priority order in order to select the final optimal charging target location.

10. The wireless charging system according to any one of claims 1 to 4, characterized in that, The control module is configured to generate the user navigation instructions in the following manner: Based on the coordinates of the optimal charging target position in the local distribution map, the relative displacement direction of the optimal charging target position relative to the current position of the external charging device is determined; Based on the relative displacement direction, a voice text command containing orientation description information is generated as the user navigation command.

11. The wireless charging system according to any one of claims 1 to 4, characterized in that, The control module is also configured to: Store multiple local distribution maps of charging efficiency corresponding to different transmit power levels; During the formal charging phase, based on the target transmission power level corresponding to the current charging power, the corresponding target charging efficiency local distribution map is invoked, and corresponding user navigation instructions are generated based on the target charging efficiency local distribution map.

12. The wireless charging system according to any one of claims 1 to 4, characterized in that, The control module is also configured to: In initialization mode, multiple real-time charging efficiency values ​​generated during the user's movement of the external charging device within a preset time are recorded. The multiple real-time charging efficiency values ​​are sorted by numerical value, and the efficiency value at the preset percentile position is selected as the charging efficiency benchmark value. The control module is also configured to: in navigation mode, if the currently detected real-time charging efficiency is lower than the charging efficiency benchmark value, trigger the step of generating the user navigation command.

13. The wireless charging system according to claim 12, characterized in that, The control module is also configured to: Determine a sliding window for storing a series of consecutive real-time charging efficiency values; In the navigation mode, if the currently detected real-time charging efficiency value is higher than the stored maximum charging efficiency value, the stored maximum charging efficiency value is updated, and the charging efficiency benchmark value is recalculated and updated based on the updated efficiency value set in the sliding window.

14. The wireless charging system according to claim 12, characterized in that, The control module is also configured to: Record multiple historical optimal location data that were determined as the optimal charging target location during the historical charging process; When determining the current optimal charging target location, the decision is made with reference to the historical optimal location data.

15. The wireless charging system according to claim 1, characterized in that, The control module is also configured to: After the voice prompt module broadcasts navigation instructions to guide the user to move the external charging device to the optimal charging target location, it controls the external charging device to switch from the scanning mode to the formal charging mode to start charging.

16. A wireless charging method, characterized in that, Applied to the system according to any one of claims 1 to 15, the method comprises: The external charging device is controlled to operate in scanning mode to obtain a local distribution map of charging efficiency in the area where the implanted medical device is located; Based on the local distribution map of charging efficiency, at least one optimal charging target location is determined, and user navigation instructions corresponding to the optimal charging target location are generated; The voice prompt module is controlled to broadcast the navigation instructions to guide the user to move the external charging device to the optimal charging target location.

17. An external charging device, characterized in that, Including a voice prompt module and a control module, the external charging device wirelessly transmits power to the implantable medical device, and the control module is configured to: The external charging device is controlled to operate in scanning mode to obtain a local distribution map of charging efficiency in the area where the implanted medical device is located; Based on the local distribution map of charging efficiency, at least one optimal charging target location is determined, and user navigation instructions corresponding to the optimal charging target location are generated; The voice prompt module is controlled to broadcast the navigation instructions to guide the user to move the external charging device to the optimal charging target location.

18. A computer-readable storage medium having a computer program stored thereon, characterized in that, When the computer program is executed by the processor, it implements the functions of the control module as described in any one of claims 1 to 15.

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