Charging method of passive lock, storage medium and passive lock

Abstract

The application provides a charging method of a passive lock, a storage medium and the passive lock. The passive lock comprises an energy collection module and an energy storage capacitor. The energy collection module is used to collect energy to charge the energy storage capacitor. The charging method comprises the following steps: obtaining a current voltage value between the energy storage capacitor; switching the charging rate of the energy collection module to the energy storage capacitor according to the comparison relationship between the current voltage value and a current switching point voltage parameter; if the charging is normal after the rate is switched, reducing the current switching point voltage parameter to obtain a first to-be-determined switching point voltage parameter; in the next charging process, switching the charging rate of the energy storage capacitor based on the first to-be-determined switching point voltage parameter; if the charging is abnormal after the rate is switched, determining the current switching point voltage parameter as a target switching point voltage parameter, so that the efficiency and success rate of unlocking based on the use habit and equipment of each user are higher in the subsequent charging process based on the target switching point voltage parameter.

Description

Technical Field

[0001] This application belongs to the field of passive lock technology, and particularly relates to a charging method, storage medium and passive lock for a passive lock. Background Technology

[0002] A passive electronic lock is a smart lock that does not require an external power source. After receiving the unlocking command and wireless energy signal through the NFC antenna, the passive electronic lock converts the energy into the power required for its operation under the joint action of relevant modules, and realizes the unlocking function under the unlocking command.

[0003] Some existing passive electronic locks adjust the charging rate of the energy storage capacitor based on the voltage across the capacitor during the charging process. For example, the charging rate is increased after the voltage across the capacitor reaches a preset value, thereby improving the charging efficiency of the passive lock. However, due to differences in users' unlocking device models and usage habits, some users may frequently fail to unlock, while others who could unlock faster are unable to improve their unlocking efficiency due to parameter limitations. Summary of the Invention

[0004] This application provides a charging method, storage medium, and passive lock for a passive lock, which can solve the problem that the switching point voltage parameters of existing passive locks cannot match the actual usage of each user, thus affecting the user's unlocking efficiency and unlocking success rate.

[0005] To achieve the above objectives, this application provides the following technical solution:

[0006] A charging method for a passive lock, the passive lock comprising an energy harvesting module and an energy storage capacitor, the energy harvesting module being used to collect energy emitted by an unlocking device to charge the energy storage capacitor, the charging method for the passive lock comprising: Obtain the current voltage value across the energy storage capacitor; The charging rate of the energy harvesting module to the energy storage capacitor is switched according to the comparison between the current voltage value and the voltage parameter at the current switching point; If charging proceeds normally after the rate switch, the voltage parameter at the current switching point is reduced to obtain the voltage parameter at the first undetermined switching point. During the next charging process, the charging rate of the energy harvesting module to the energy storage capacitor is switched based on the first pending switching point voltage parameter. If the charging is abnormal after the rate switch, the current switching point voltage parameter is determined as the target switching point voltage parameter so that the charging rate of the energy harvesting module to the energy storage capacitor is switched based on the target switching point voltage parameter in subsequent charging processes.

[0007] In some embodiments, after switching the charging rate of the energy harvesting module to the energy storage capacitor based on the first undetermined switching point voltage parameter during the next charging process, the method further includes: If charging is normal after the rate switch, the voltage parameter of the first undetermined switching point is determined as the new current switching point voltage parameter.

[0008] In some embodiments, before switching the charging rate of the energy harvesting module to the energy storage capacitor based on the comparison between the current voltage value and the current switching point voltage parameter, the method further includes: The target voltage range is determined from multiple different voltage ranges based on the current voltage value; The current switching point voltage parameter is determined based on the target voltage range and the switching point voltage parameter set, wherein the switching point voltage parameter set includes a one-to-one correspondence between multiple voltage ranges and multiple voltage switching point parameters.

[0009] In some embodiments, reducing the current switching point voltage parameter to obtain the first undetermined switching point voltage parameter includes: Obtain the first preset voltage value; Subtract the first preset voltage value from the current switching point voltage parameter to obtain the first undetermined switching point voltage parameter.

[0010] In some embodiments, determining the current switching point voltage parameter as the target switching point voltage parameter if charging anomalies after rate switching includes: If charging fails after the rate switch, a second preset voltage value is obtained, which is less than the first preset voltage value. The first undetermined switching point voltage parameter is added to the second preset voltage value to obtain the second undetermined switching point voltage parameter; During the next charging process, the charging rate of the energy harvesting module to the energy storage capacitor is switched based on the second undetermined switching point voltage parameter; If charging is abnormal after the rate switch, the current switching point voltage parameter is determined as the target switching point voltage parameter. If charging is normal after the rate switch, the stored current switching point voltage parameter is updated to the second pending switching point voltage parameter, and the updated current switching point voltage parameter is determined as the target switching point voltage parameter.

[0011] In some embodiments, if during the initial charging process of the passive lock, switching the charging rate of the energy harvesting module to the energy storage capacitor based on the initial switching point voltage parameter leads to a charging abnormality, then the charging method of the passive lock further includes: Obtain the current voltage value across the energy storage capacitor; The charging rate of the energy harvesting module to the energy storage capacitor is switched according to the comparison between the current voltage value and the voltage parameter at the current switching point; If charging is abnormal after the rate switch, the voltage parameter at the current switching point is increased to obtain the voltage parameter at the third undetermined switching point. During the next charging process, the charging rate of the energy harvesting module to the energy storage capacitor is switched based on the third pending switching point voltage parameter. If the charging is normal after the rate switch, the third pending switching point voltage parameter is determined as the target switching point voltage parameter, so that the charging rate of the energy harvesting module to the energy storage capacitor is switched based on the target switching point voltage parameter in subsequent charging processes.

[0012] In some embodiments, increasing the current switching point voltage parameter to obtain a third undetermined switching point voltage parameter includes: Obtain the third preset voltage value; The current switching point voltage parameter is added to the third preset voltage value to obtain the third undetermined switching point voltage parameter.

[0013] In some embodiments, after obtaining the current voltage value across the energy storage capacitor, the method further includes: Obtain the full charge voltage value, which is the preset voltage value across the energy storage capacitor when it is fully charged; The percentage of the energy storage capacitor that has been fully charged is determined based on the current voltage value and the fully charged voltage value. Displays the percentage of charging completed.

[0014] A storage medium for use in a passive lock, wherein a computer program is stored thereon, and the computer program executes the above-described charging method when it is run.

[0015] A passive lock, comprising: Energy storage capacitor; An energy harvesting module, connected to the energy storage capacitor, is used to harvest energy emitted by the unlocking device to charge the energy storage capacitor; A voltage detection circuit is used to detect the voltage across the energy storage capacitor; The controller, connected to the voltage detection circuit and the energy harvesting module, is used for: Obtain the current voltage value across the energy storage capacitor; The charging rate of the energy harvesting module to the energy storage capacitor is switched according to the comparison between the current voltage value and the voltage parameter at the current switching point; If charging proceeds normally after the rate switch, the voltage parameter at the current switching point is reduced to obtain the voltage parameter at the undetermined switching point. During the next charging process, the charging rate of the energy harvesting module to the energy storage capacitor is switched based on the pending switching point voltage parameter. If the charging is abnormal after the rate switch, the current switching point voltage parameter is determined as the target switching point voltage parameter, so that the charging rate of the energy harvesting module to the energy storage capacitor is switched based on the target switching point voltage parameter in subsequent charging processes.

[0016] The charging parameter adjustment method, storage medium, and electronic lock provided in this application, when the energy harvesting module is normally charging the energy storage capacitor at the current switching point voltage parameter, attempt to switch the charging rate of the energy harvesting module to the energy storage capacitor using a smaller switching point voltage parameter in the next attempt. If a charging abnormality occurs, it indicates that the current switching point voltage parameter is closest to the minimum switching point voltage parameter that matches the user's usage habits and the unlocking device. Since the earlier the charging rate of the energy storage capacitor is increased, the shorter the total charging time and the higher the unlocking efficiency, by determining the current switching point voltage parameter as the target switching point voltage parameter for subsequent charging, it is possible to ensure that each user has a higher unlocking success rate and unlocking efficiency based on their own usage habits and unlocking device. Attached Figure Description

[0017] To more clearly illustrate the technical solutions in the embodiments of this application, the accompanying drawings used in the description of the embodiments will be briefly introduced below. Obviously, the drawings described below are only some embodiments of this application, and those skilled in the art can obtain other drawings based on these drawings without creative effort.

[0018] Figure 1 This is a first flowchart of a charging method for a passive lock provided in an embodiment of this application.

[0019] Figure 2 This is a second flowchart of a charging method for a passive lock provided in an embodiment of this application.

[0020] Figure 3 This is a third flowchart of a charging method for a passive lock provided in an embodiment of this application.

[0021] Figure 4 This is a fourth flowchart of a charging method for a passive lock provided in an embodiment of this application.

[0022] Figure 5 This is a schematic diagram of the passive lock provided in an embodiment of this application. Detailed Implementation

[0023] The technical solutions of the embodiments of this application will be clearly and completely described below with reference to the accompanying drawings. Obviously, the described embodiments are only a part of the embodiments of this application, and not all of them. All other embodiments obtained by those skilled in the art based on the embodiments of this application without creative effort are within the scope of protection of this application.

[0024] To gain a more complete understanding of this application and its beneficial effects, the following description will be provided in conjunction with the accompanying drawings. In the following description, the same reference numerals denote the same parts.

[0025] A passive lock is an electronic lock that obtains energy from an external device to complete the unlocking command without requiring an internal power supply. A passive lock typically includes an energy storage capacitor, an energy harvesting module, and a power unit. The energy harvesting module collects energy from the external device and, after rectification and voltage regulation, charges the energy storage capacitor. Once the energy storage capacitor has reached a certain charge level, it supplies power to the power unit, causing it to rotate. This power unit then drives the mechanical parts of the passive lock to perform mechanical movement, thus completing the unlocking command.

[0026] In some existing passive locks, to improve unlocking efficiency while maintaining a high success rate, the energy harvesting module increases the charging rate of the energy storage capacitor when the voltage across the capacitor reaches a preset value, thereby shortening the charging time. For example, initially, the energy harvesting module charges the energy storage capacitor at a first rate; when the voltage across the capacitor reaches 1.2V, the charging rate is increased to a second rate; when the voltage reaches 3.6V, the rate is increased to a third rate; when the voltage reaches 5V, the rate is increased to a fourth rate… until the voltage reaches 15V, at which point the charging is complete. It is understood that in existing technology, the voltage parameter at the charging rate switching point of the passive lock is a preset fixed value.

[0027] However, in practical applications, users use a variety of unlocking devices, and each user's different usage habits lead to varying alignment between the unlocking device and the passive lock's charging coil during unlocking. This results in differences in the charging status of the energy storage capacitor. For example, some users have good alignment between their unlocking device and the passive lock's charging coil, so the energy storage capacitor can smoothly reach the second charging rate when the voltage reaches, for example, 1.0V, thus shortening the unlocking time. However, some users have poor alignment between their unlocking device and the passive lock's charging coil, so the energy storage capacitor needs to reach, for example, 2.0V to smoothly reach the second charging rate. If the charging rate is increased prematurely, it will lead to charging abnormalities.

[0028] Therefore, given that users have different unlocking devices and different usage habits, setting the switching point voltage of the charging rate of the energy harvesting module of the passive lock to a fixed value will result in some users having higher unlocking efficiency but being unable to further improve it due to the limitation of fixed parameters, while some users will often fail to unlock due to abnormal charging.

[0029] To address the aforementioned issues, this application provides a charging method for a passive lock. For an example, please refer to [link to example]. Figure 1 , Figure 1 This is a first flowchart illustrating a charging method for a passive lock provided in an embodiment of this application. The passive lock includes an energy harvesting module and an energy storage capacitor. The energy harvesting module collects energy emitted by the unlocking device to charge the energy storage capacitor. The charging method is executed, for example, by the controller of the passive lock, and includes the following steps S101-S104: Step S101: Obtain the current voltage value across the energy storage capacitor; Step S102: Switch the charging rate of the energy harvesting module to the energy storage capacitor based on the comparison between the current voltage value and the voltage parameter at the current switching point; It should be noted that before the passive lock unlocks during its first charge, the designer needs to preset and store the switching point voltage parameters in the passive lock according to actual needs and information such as the model of the passive lock. This allows the passive lock to switch the charging rate of the energy harvesting module to the energy storage capacitor based on the preset initial switching point voltage parameters during the first charge. For example, the designer can preset the initial switching point voltage parameter to 1.2V. During the first charge of the passive lock, when the current voltage of the energy storage capacitor reaches 1.2V, the charging rate of the energy harvesting module to the energy storage capacitor will be increased from the first rate to the second rate. Understandably, the designer can preset the initial switching point voltage parameter to a larger value to ensure normal charging and unlocking during the first charge.

[0030] It should be noted that during the initial charging of the passive lock and subsequent charging processes, the current switching point voltage parameter is reduced accordingly each time based on the normal charging result after rate switching, until charging anomalies occur. This process determines the switching point voltage parameter that best matches the user's usage habits and the unlocking device. Therefore, the current switching point voltage parameter in step S102 may be the initial switching point voltage parameter or a switching point voltage parameter obtained by reducing the initial switching point voltage parameter. For example, if this charging is the first charging of the passive lock, the current switching point voltage parameter is the initial switching point voltage parameter preset by the designer, such as 1.2V; if this charging is the second charging of the passive lock, and the passive lock normally unlocked during the first charging, the current switching point voltage parameter is the switching point voltage parameter adjusted based on the initial switching point voltage parameter, such as 1.1V.

[0031] Step S103: If charging proceeds normally after rate switching, reduce the current switching point voltage parameter to obtain the first undetermined switching point voltage parameter; Understandably, if normal charging occurs after the rate switch during this charging process, it indicates that the energy harvesting module can successfully increase the charging rate of the energy storage capacitor based on the current switching point voltage parameter. However, whether the switching point voltage parameter can be further reduced to further shorten the charging time and improve unlocking efficiency is unknown. Therefore, the current switching point voltage parameter can be reduced to obtain a first pending switching point voltage parameter. This parameter can then be used to test whether the energy harvesting module can charge the energy storage capacitor normally after switching the charging rate based on this first pending switching point voltage parameter during the next unlocking attempt, thus gradually determining the highest unlocking efficiency.

[0032] Step S104: In the next charging process, the charging rate of the energy harvesting module to the energy storage capacitor is switched based on the first pending switching point voltage parameter. If the charging is abnormal after the rate switch, the current switching point voltage parameter is determined as the target switching point voltage parameter so that the charging rate of the energy harvesting module to the energy storage capacitor is switched based on the target switching point voltage parameter in the subsequent charging process.

[0033] It should be noted that after determining the target switching point voltage parameters, the process also includes storing the determined target switching point voltage parameters in a passive lock.

[0034] Understandably, if during the next charging process, switching the charging rate of the energy harvesting module to the energy storage capacitor based on the first pending switching point voltage parameter leads to charging anomalies, it indicates that the current switching point voltage parameter used in this charging process is closest to the minimum switching point voltage parameter that best matches the user's usage habits and the unlocking device. This also represents the closest possible unlocking efficiency that the user can achieve based on their usage habits and the unlocking device. Therefore, determining the current switching point voltage parameter as the target switching point voltage parameter for use in subsequent charging processes ensures that each user has a higher unlocking success rate and unlocking efficiency based on their individual usage habits and unlocking devices.

[0035] Understandably, in the next charging process, if the energy harvesting module can still charge the energy storage capacitor normally after switching the charging rate based on the first pending switching point voltage parameter, then the first pending switching point voltage parameter can be determined as the new current switching point voltage parameter. Subsequently, the new current switching point voltage parameter can be further decreased to obtain a new first pending switching point voltage parameter. This new first pending switching point voltage parameter can then be used to switch the charging rate of the energy harvesting module on the energy storage capacitor in the next charging process. After multiple normal charging cycles and reductions of the switching point voltage parameter, the target switching point voltage parameter is determined when the switching rate causes a charging anomaly.

[0036] In practical applications, after a user activates the passive lock, for example, following the software prompts, they can attempt to unlock it multiple times. During these repeated unlocking attempts, the passive lock automatically adjusts its switching point voltage parameters based on the user's experience, ultimately determining the target switching point voltage parameters. Understandably, each lock, after learning user habits and the unlocking device's behavior, stores switching point voltage parameters specific to that user, providing a better unlocking experience in subsequent uses.

[0037] The passive lock charging method provided in this application, when normally charging the energy storage capacitor by switching the energy harvesting module's charging rate based on the current switching point voltage parameter, attempts to switch the energy harvesting module's charging rate for the energy storage capacitor using a smaller switching point voltage parameter in the next attempt. If a charging abnormality occurs, it indicates that the current switching point voltage parameter is closest to the minimum switching point voltage parameter that matches the user's usage habits and the unlocking device. We know that the earlier the charging rate of the energy storage capacitor is increased, the shorter the total charging time and the higher the unlocking efficiency. Therefore, by determining the current switching point voltage parameter as the target switching point voltage parameter for subsequent charging, it is possible to ensure that each user has a higher unlocking success rate and unlocking efficiency based on their individual usage habits and unlocking devices.

[0038] For further details, please refer to Figure 2 , Figure 2 This is a second flowchart illustrating a charging method for a passive lock provided in an embodiment of this application. The charging method for the passive lock includes the following steps S201-S212: Step S201: During the first charging process, obtain the first voltage value across the energy storage capacitor; Step S202: Determine the first target voltage range from multiple different voltage ranges based on the first voltage value; Understandably, the passive lock has multiple pre-stored voltage ranges, and the voltage range into which the first voltage value falls is determined as the first target voltage range. For example, the multiple voltage ranges include 0-1.2V, 1.2V-3.6V, 3.6V-5V, etc. If the first voltage value falls within the 0-1.2V range, for example, 1.0V, then the 0-1.2V voltage range is determined as the first target voltage range.

[0039] Step S203: Determine the current switching point voltage parameters based on the target voltage range and the switching point voltage parameter group; It should be noted that the switching point voltage parameter group includes a one-to-one correspondence between multiple voltage ranges and multiple switching point voltage parameters. For example, the switching point voltage parameter corresponding to the voltage range of 0-1.2V is 1.2V, the switching point voltage parameter corresponding to the voltage range of 1.2V-3.6V is 3.6V, the switching point voltage parameter corresponding to the voltage range of 3.6V-5V is 5V, and so on.

[0040] Step S204: Determine whether the first voltage value has reached the current switching point voltage parameter; Understandably, for example, if the first voltage value falls within the voltage range of 0-1.2V, then the current switching point voltage parameter it is compared with is 1.2V; if the first voltage value falls within the voltage range of 1.2V-3.6V, then the current switching point voltage parameter it is compared with is 3.6V, and so on.

[0041] Step S205: If the first voltage value reaches the current switching point voltage parameter, then increase the charging rate of the energy harvesting module to the energy storage capacitor; An energy harvesting module, for example, charges an energy storage capacitor by converting the harvested electrical energy into direct current, and a controller, for example, adjusts the voltage value of the direct current to regulate the charging rate of the energy harvesting module on the energy storage capacitor.

[0042] Step S206: If normal charging occurs after the rate increase, then obtain the first preset voltage value; Step S207: Subtract the first preset voltage value from the current switching point voltage parameter to obtain the first undetermined switching point voltage parameter; For example, the first preset voltage value is 0.1V. If the current switching point voltage parameter is 1.2V, then the first pending switching point voltage parameter is 1.1V.

[0043] Step S208: During the second charging process, the charging rate of the energy harvesting module to the energy storage capacitor is switched based on the voltage parameter of the first undetermined switching point; Understandably, during the first charging process, for example, when the voltage across the energy storage capacitor reaches 1.2V, the charging rate of the energy harvesting module is increased for the first time. Therefore, during the second charging process, the charging rate of the energy storage capacitor is increased for the first time when the voltage across the energy storage capacitor reaches 1.1V.

[0044] Step S209: If charging is abnormal after rate switching, obtain the second preset voltage value; It should be noted that the second preset voltage value is less than the first preset voltage value.

[0045] Step S210: Add the first undetermined switching point voltage parameter to the second preset voltage value to obtain the second undetermined switching point voltage parameter; Understandably, if an abnormal charging occurs due to the switching rate of the energy harvesting module's charging of the energy storage capacitor based on the first pending switching point voltage parameter, it can be determined that the minimum switching point voltage parameter matching the user's usage habits and the unlocking device is greater than the first pending switching point voltage parameter and less than or equal to the current switching point voltage parameter. Therefore, by adding a second preset voltage value less than the first preset voltage value to the first pending switching point voltage parameter, a second pending switching point voltage parameter greater than the first pending switching point voltage parameter and less than or equal to the current switching point voltage parameter can be obtained for use in the next charging cycle. This further helps to find a target switching point voltage parameter that is closer to the minimum switching point voltage parameter matching the user's usage habits and the unlocking device.

[0046] Preferably, the second undetermined switching point voltage parameter is taken as the midpoint between the first undetermined switching point voltage parameter and the current switching point voltage parameter. For example, the second preset voltage value is 0.05V. If the first undetermined switching point voltage parameter is 1.1V, then the second undetermined switching point voltage parameter is 1.15V.

[0047] Step S211: During the third charging process, the charging rate of the energy harvesting module to the energy storage capacitor is switched based on the voltage parameter of the second undetermined switching point; Step S212: If charging is abnormal after rate switching, the current switching point voltage parameter is determined as the target switching point voltage parameter; if charging is normal after rate switching, the stored current switching point voltage parameter is updated to the second pending switching point voltage parameter, and the updated current switching point voltage parameter is determined as the target switching point voltage parameter.

[0048] Understandably, if charging is abnormal after a rate switch, it indicates that the minimum switching point voltage parameter matching the user's usage habits and the unlocking device is greater than the second pending switching point voltage parameter and less than or equal to the current switching point voltage parameter. Therefore, the current switching point voltage parameter is determined as the target switching point voltage parameter. If charging is normal after a rate switch, it indicates that the minimum switching point voltage parameter matching the user's usage habits and the unlocking device is greater than the first pending switching point voltage parameter and less than or equal to the second switching point voltage parameter. Therefore, the second pending switching point voltage parameter is determined as the target switching point voltage parameter.

[0049] In practical applications, during the initial charging and unlocking process of a passive lock, the user may experience charging anomalies due to the energy harvesting module switching the charging rate of the energy storage capacitor based on the initial switching point voltage parameters. To address this issue, the passive lock charging method provided in this application embodiment further includes the following: [See details]. Figure 3 , Figure 3 This is a third flowchart of a charging method for a passive lock provided in an embodiment of this application. The charging method for the passive lock includes the following steps S301-S304: Step S301: Obtain the current voltage value across the energy storage capacitor; Step S302: Switch the charging rate of the energy harvesting module to the energy storage capacitor based on the comparison between the current voltage value and the voltage parameter at the current switching point; Step S303: If charging is abnormal after rate switching, increase the voltage parameter of the current switching point to obtain the voltage parameter of the third undetermined switching point; In some embodiments, increasing the current switching point voltage parameter to obtain a third undetermined switching point voltage parameter includes: obtaining a third preset voltage value; adding the current switching point voltage parameter to the third preset voltage value to obtain the third undetermined switching point voltage parameter. For example, if the third preset voltage value is 0.1V, and the current switching point voltage parameter is 1.2V, then the third undetermined switching point voltage is 1.3V.

[0050] Step S304: In the next charging process, the charging rate of the energy harvesting module to the energy storage capacitor is changed based on the third undetermined switching point voltage parameter. If the charging is normal after the rate switch, the third undetermined switching point voltage parameter is determined as the target switching point voltage parameter, so that the charging rate of the energy harvesting module to the energy storage capacitor is changed based on the target switching point voltage parameter in subsequent charging processes.

[0051] Understandably, if switching the charging rate of the energy storage capacitor based on the current switching point voltage parameter results in charging failure, then in the next charging attempt, try switching the charging rate of the energy storage capacitor based on a larger switching point voltage parameter to see if it can charge normally. After trying this multiple times until normal charging occurs after switching the rate, the target switching point voltage parameter that is closest to the minimum switching point voltage parameter matching the user's usage habits and the unlocking device can be determined.

[0052] For ease of understanding, during the initial charging of a passive lock, if switching the charging rate of the energy harvesting module to the energy storage capacitor based on the initial switching point voltage parameter leads to charging an anomaly, a switching point voltage parameter adjustment cycle, different from the normal charging during the initial charging when the switching rate was based on the initial switching point voltage parameter, is initiated. This adjustment cycle for the anomaly during the initial charging includes multiple charging processes. With time as the axis, the switching point voltage parameter based on each charging process increases progressively. Only during the final charging process does normal charging occur after switching the charging rate. In the multiple charging processes prior to the final one, switching the charging rate all resulted in charging anomalies. Therefore, it can be determined that the switching point voltage parameter based on the final charging process is closest to the minimum switching point voltage parameter that best matches user habits and the minimum switching point voltage parameter of the unlocking device.

[0053] The passive lock charging method provided in this application, when the charging rate of the energy harvesting module to charge the energy storage capacitor is abnormal when switching based on the current switching point voltage parameter, attempts to switch the charging rate of the energy harvesting module to the energy storage capacitor using a larger switching point voltage parameter (a third pending switching point voltage parameter) in the next attempt. If charging is normal after the switch, it indicates that the third pending switching point voltage parameter is closest to the minimum switching point voltage parameter that matches the user's usage habits and the unlocking device. Therefore, by determining the third pending switching point voltage parameter as the target switching point voltage parameter for subsequent charging, it is possible to ensure that each user has a higher unlocking success rate and unlocking efficiency based on their own usage habits and unlocking device.

[0054] In some embodiments, please refer to Figure 4 , Figure 4 This is a fourth flowchart of a charging method for a passive lock provided in an embodiment of this application. The charging method for the passive lock may further include the following steps S401-S403: Step S401: Charge the passive lock multiple times to attempt to unlock it. Each time the passive lock is charged, the charging rate of the energy harvesting module to the energy storage capacitor is switched based on different switching point voltage parameters to obtain the switching result corresponding to each switching point voltage parameter. The switching result is either normal charging after the rate switch or abnormal charging after the rate switch. Step S402: Determine the target switching point voltage parameter from multiple switching point voltage parameters based on multiple switching results. The target switching point voltage parameter is the smallest switching point voltage parameter among multiple switching point voltage parameters corresponding to the switching result of normal charging after rate switching. Step S403: In the subsequent charging process, the charging rate of the energy harvesting module to the energy storage capacitor is switched based on the target switching point voltage parameter.

[0055] It is understood that in the charging method of steps S401-S403 provided in the embodiments of this application, multiple different switching point voltage parameters are preset, and the charging rate of the energy storage capacitor is tested one by one based on each switching point voltage parameter to determine whether the charging is normal. In order to find the switching point voltage parameter that is closest to the minimum switching point voltage parameter that matches the user's usage habits and the unlocking device among multiple different switching point voltage parameters as the target switching point voltage parameter.

[0056] However, this method results in a large number of tests and low intelligence. Therefore, the switching point voltage parameter used by the passive lock can be gradually increased with each charging cycle. This allows the lock to lock the target switching point voltage parameter corresponding to the initial abnormal charging result after the first rate switch. This significantly reduces the number of tests.

[0057] In some embodiments, after acquiring the current voltage value across the energy storage capacitor, the control method for the passive lock further includes: acquiring a full-charge voltage value, which is a preset voltage value across the energy storage capacitor when charging is complete; determining the charging completion percentage of the energy storage capacitor based on the current voltage value and the full-charge voltage value; and displaying the charging completion percentage. In practical applications, users can know the unlocking progress based on the displayed charging completion percentage. When the charging completion percentage reaches 100%, the passive lock will definitely unlock successfully. Therefore, compared to existing passive locks that rely on charging time to determine the unlocking progress, this method is more intuitive and avoids unlocking failures due to charging timeouts, resulting in a better user unlocking experience.

[0058] This application embodiment also provides a storage medium applied to a passive lock, which stores a computer program that executes the above-described charging parameter adjustment method when the computer program is run.

[0059] This application also provides a passive lock in its embodiments; for example, please refer to [link to example]. Figure 5 , Figure 5 This is a schematic diagram of the passive lock provided in an embodiment of this application. The passive lock 100 includes an energy storage capacitor 110, an energy harvesting module 120, a voltage detection circuit 130, and a controller 140.

[0060] The energy harvesting module 120 is connected to the energy storage capacitor 110 and is used to harvest energy emitted by the unlocking device to charge the energy storage capacitor 110. The voltage detection circuit 130 is used to detect the voltage across the energy storage capacitor 110. The controller 140 is connected to the voltage detection circuit 130 and the energy harvesting module 120, and is used to: acquire the current voltage value across the energy storage capacitor 110; switch the charging rate of the energy harvesting module 120 on the energy storage capacitor 110 based on the comparison between the current voltage value and the current switching point voltage parameter; if normal charging occurs after the rate switch, decrease the current switching point voltage parameter to obtain a pending switching point voltage parameter; in the next charging process, switch the charging rate of the energy harvesting module 120 on the energy storage capacitor 110 based on the pending switching point voltage parameter; if abnormal charging occurs after the rate switch, determine the current switching point voltage parameter as the target switching point voltage parameter, so that the charging rate of the energy harvesting module 120 on the energy storage capacitor 110 is switched based on the target switching point voltage parameter in subsequent charging processes. The energy storage capacitor 110 is also connected to the controller 140, for example, to supply power to the controller 140.

[0061] In some embodiments, the passive lock 100 further includes a communication antenna connected to a controller. The communication antenna transmits the charging completion percentage to the unlocking device, allowing the unlocking device to display the charging completion percentage. The passive lock 100 may also include a display module connected to the controller, used to display the charging completion percentage of the passive lock. In practical applications, users can track the unlocking progress based on the displayed charging completion percentage. When the charging completion percentage reaches 100%, the passive lock will definitely unlock successfully. Therefore, compared to existing passive locks that rely on charging time to track unlocking progress, this method is more intuitive and avoids unlocking failures due to charging timeouts, resulting in a better user experience.

[0062] The passive lock 100 provided in this application embodiment, when normally charging the energy harvesting module 120 to charge the energy storage capacitor 110 based on the current switching point voltage parameter, attempts to switch the charging rate of the energy harvesting module 120 to the energy storage capacitor 110 using a smaller switching point voltage parameter in the next attempt. If a charging abnormality occurs, it indicates that the current switching point voltage parameter is closest to the minimum switching point voltage parameter that matches the user's usage habits and the unlocking device. We know that the earlier the charging rate of the energy storage capacitor is increased, the shorter the total charging time and the higher the unlocking efficiency. Therefore, by determining the current switching point voltage parameter as the target switching point voltage parameter for subsequent charging, it is possible to ensure that each user has a higher unlocking success rate and unlocking efficiency based on their own usage habits and unlocking device.

[0063] The charging method, storage medium, and passive lock provided in the embodiments of this application have been described in detail above. Specific examples have been used to illustrate the principles and implementation methods of this application. The description of the above embodiments is only for the purpose of helping to understand the method and core ideas of this application. At the same time, for those skilled in the art, there will be changes in the specific implementation methods and application scope based on the ideas of this application. Therefore, the content of this specification should not be construed as a limitation of this application.

Claims

1. A charging method for a passive lock, characterized in that, The passive lock includes an energy harvesting module and an energy storage capacitor. The energy harvesting module is used to collect energy emitted by the unlocking device to charge the energy storage capacitor. The charging method of the passive lock includes: Obtain the current voltage value across the energy storage capacitor; The charging rate of the energy harvesting module to the energy storage capacitor is switched according to the comparison between the current voltage value and the voltage parameter at the current switching point; If charging proceeds normally after the rate switch, the voltage parameter at the current switching point is reduced to obtain the voltage parameter at the first undetermined switching point. During the next charging process, the charging rate of the energy harvesting module to the energy storage capacitor is switched based on the first pending switching point voltage parameter. If the charging is abnormal after the rate switch, the first pending switching point voltage parameter is increased to obtain a second pending switching point voltage parameter. The second pending switching point voltage parameter is greater than the first pending switching point voltage parameter and less than or equal to the current switching point voltage parameter. In the next charging process, the charging rate of the energy harvesting module to the energy storage capacitor is switched based on the second pending switching point voltage parameter. If the charging is abnormal after the rate switch, the current switching point voltage parameter is determined as the target switching point voltage parameter. If the charging is normal after the rate switch, the stored current switching point voltage parameter is updated to the second pending switching point voltage parameter, and the updated current switching point voltage parameter is determined as the target switching point voltage parameter, so that in subsequent charging processes, the charging rate of the energy harvesting module to the energy storage capacitor is switched based on the target switching point voltage parameter.

2. The charging method for the passive lock according to claim 1, characterized in that, In the next charging process, after switching the charging rate of the energy harvesting module to the energy storage capacitor based on the first undetermined switching point voltage parameter, the method further includes: If charging is normal after the rate switch, the voltage parameter of the first undetermined switching point is determined as the new current switching point voltage parameter.

3. The charging method for the passive lock according to claim 1, characterized in that, Before switching the charging rate of the energy harvesting module to the energy storage capacitor based on the comparison between the current voltage value and the current switching point voltage parameter, the method further includes: The target voltage range is determined from multiple different voltage ranges based on the current voltage value; The current switching point voltage parameter is determined based on the target voltage range and the switching point voltage parameter set, wherein the switching point voltage parameter set includes a one-to-one correspondence between multiple voltage ranges and multiple voltage switching point parameters.

4. The charging method for the passive lock according to claim 1, characterized in that, Decreasing the current switching point voltage parameter to obtain the first undetermined switching point voltage parameter includes: Obtain the first preset voltage value; Subtract the first preset voltage value from the current switching point voltage parameter to obtain the first undetermined switching point voltage parameter.

5. The charging method for the passive lock according to claim 4, characterized in that, If charging becomes abnormal after rate switching, increasing the voltage parameter of the first undetermined switching point to obtain the voltage parameter of the second undetermined switching point includes: If charging fails after the rate switch, a second preset voltage value is obtained, which is less than the first preset voltage value. The first undetermined switching point voltage parameter is added to the second preset voltage value to obtain the second undetermined switching point voltage parameter.

6. The charging method for the passive lock according to any one of claims 1-5, characterized in that, If, during the initial charging process of the passive lock, the charging rate of the energy harvesting module to the energy storage capacitor is switched based on the initial switching point voltage parameters, resulting in a charging anomaly, then the charging method of the passive lock further includes: Obtain the current voltage value across the energy storage capacitor; The charging rate of the energy harvesting module to the energy storage capacitor is switched according to the comparison between the current voltage value and the voltage parameter at the current switching point; If charging is abnormal after the rate switch, the voltage parameter at the current switching point is increased to obtain the voltage parameter at the third undetermined switching point. During the next charging process, the charging rate of the energy harvesting module to the energy storage capacitor is switched based on the third pending switching point voltage parameter. If the charging is normal after the rate switch, the third pending switching point voltage parameter is determined as the target switching point voltage parameter, so that the charging rate of the energy harvesting module to the energy storage capacitor is switched based on the target switching point voltage parameter in subsequent charging processes.

7. The charging method for the passive lock according to claim 6, characterized in that, Increasing the current switching point voltage parameter to obtain the third undetermined switching point voltage parameter includes: Obtain the third preset voltage value; The current switching point voltage parameter is added to the third preset voltage value to obtain the third undetermined switching point voltage parameter.

8. The charging method for the passive lock according to any one of claims 1-5, characterized in that, After obtaining the current voltage value across the energy storage capacitor, the method further includes: Obtain the full charge voltage value, which is the preset voltage value across the energy storage capacitor when it is fully charged; The percentage of the energy storage capacitor that has been fully charged is determined based on the current voltage value and the fully charged voltage value. Displays the percentage of charging completed.

9. A storage medium applied to a passive lock, characterized in that, It stores a computer program, which executes the charging method according to any one of claims 1-8 when it runs.

10. A passive lock, characterized in that, include: Energy storage capacitor; An energy harvesting module, connected to the energy storage capacitor, is used to harvest energy emitted by the unlocking device to charge the energy storage capacitor; A voltage detection circuit is used to detect the voltage across the energy storage capacitor; The controller, connected to the voltage detection circuit and the energy harvesting module, is used for: Obtain the current voltage value across the energy storage capacitor; The charging rate of the energy harvesting module to the energy storage capacitor is switched according to the comparison between the current voltage value and the voltage parameter at the current switching point; If charging proceeds normally after the rate switch, the voltage parameter at the current switching point is reduced to obtain the voltage parameter at the first undetermined switching point. During the next charging process, the charging rate of the energy harvesting module to the energy storage capacitor is switched based on the pending switching point voltage parameter. If the charging is abnormal after the rate switch, the first pending switching point voltage parameter is increased to obtain the second pending switching point voltage parameter. The second pending switching point voltage parameter is greater than the first pending switching point voltage parameter and less than or equal to the current switching point voltage parameter. In the next charging process, the charging rate of the energy harvesting module to the energy storage capacitor is switched based on the second pending switching point voltage parameter. If the charging is abnormal after the rate switch, the current switching point voltage parameter is determined as the target switching point voltage parameter. If the charging is normal after the rate switch, the stored current switching point voltage parameter is updated to the second pending switching point voltage parameter, and the updated current switching point voltage parameter is determined as the target switching point voltage parameter, so that in subsequent charging processes, the charging rate of the energy harvesting module to the energy storage capacitor is switched based on the target switching point voltage parameter.

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