NFC near field unlocking electronic trunk lock based on vibration magnetoelectric conversion energy storage technology

Abstract

The application discloses an NFC near-field unlocking electronic trunk lock based on a vibration magnetoelectric conversion energy storage technology, which comprises a lock body assembly, a lock catch and an electric control system, a motor and a lock cylinder are arranged in the lock body assembly and are in transmission connection, the electric control system comprises an NFC interaction module, a main control module, a vibration power compensation module and a motor driving module, the NFC interaction module synchronously realizes NFC near-field communication unlocking and passive power taking, the vibration power compensation module recycles vehicle vibration energy through magnetoelectric conversion and stores the energy, and the main control module can trigger power compensation when NFC power supply is insufficient, the utility model does not need vehicle body power supply, completely gets rid of illumination restriction, can realize stable power compensation in all scenes, has high unlocking reliability, low static power consumption and is suitable for use of most two-wheeled vehicle storage trunks.

Description

Technical Field

[0001] This utility model relates to the field of two-wheeled vehicle accessories technology, specifically to an NFC near-field unlocking electronic tailgate lock based on vibration magnetoelectric conversion energy storage technology. Background Technology

[0002] Currently, most electronic tailgate locks for two-wheeled vehicles on the market require a connection cable to the vehicle's power source for power. This results in cumbersome wiring and installation, easy aging and wear of the wiring, and the risk of short circuits. Furthermore, the locks cannot be used normally when the vehicle is powered off.

[0003] Based on our existing solar-powered NFC near-field unlocking electronic tailgate lock, this solution uses NFC near-field communication for unlocking. It provides unlocking power through an NFC energy receiving coil and adds a solar panel, a photovoltaic charging management unit, and an energy storage battery to enable the tailgate lock to work independently of the vehicle body. This solves to some extent the problems of low unlocking success rate and unstable unlocking caused by insufficient NFC sensing energy.

[0004] However, the existing technology has unavoidable technical defects: solar power replenishment is highly dependent on light conditions. In scenarios with no or low light, such as at night, in underground garages, in rainy weather, or when parked indoors, it cannot effectively replenish power. Long-term exposure to such scenarios will cause the energy storage battery to run out of power, and eventually, problems such as insufficient NFC power and unlocking failure will still occur, which cannot meet the stable use requirements of two-wheeled vehicles in all scenarios and all weather. Utility Model Content

[0005] This utility model aims to solve one of the technical problems existing in the prior art.

[0006] This application provides an NFC near-field unlocking electronic tailgate lock based on vibration magnetoelectric conversion energy storage technology, applied to the tailgate of a two-wheeled vehicle. It includes a lock body assembly, a latch, and an electronic control system. The lock body assembly includes a motor and a lock cylinder. The output end of the motor is connected to the lock cylinder for transmission. The lock cylinder and the latch are adapted to lock together. The electronic control system includes an NFC interaction module, a main control module, a vibration power supply module, and a motor drive module. The motor drive module is electrically connected to the motor. The NFC interaction module simultaneously realizes NFC near-field communication unlocking and NFC passive power supply.

[0007] Furthermore, the vibration power supply module includes a permanent magnet vibrating head, a magnetoelectric conversion coil, an AC-DC conversion circuit, an energy storage battery, and a backup power control circuit. The magnetoelectric conversion coil is electrically connected to the input terminal of the AC-DC conversion circuit, the output terminal of the AC-DC conversion circuit is electrically connected to the energy storage battery, the energy storage battery is electrically connected to the power supply terminal of the motor drive module via the backup power control circuit, and the control terminal of the backup power control circuit is connected to the main control module via signal.

[0008] Furthermore, the permanent magnet vibrating head is made of a spring with good elasticity and has a permanent magnet embedded inside.

[0009] Furthermore, the NFC interaction module includes an NFC sensing antenna, an NFC energy receiving coil, an NFC control chip, an NFC power management circuit, and an energy storage device. The NFC sensing antenna is signal-connected to the NFC control chip, the NFC energy receiving coil is electrically connected to the input terminal of the NFC power management circuit, and the output terminal of the NFC power management circuit is electrically connected to the power supply terminal of the energy storage device and the main control module, respectively, to convert NFC near-field electromagnetic energy into electrical energy, providing basic power for waking up and unlocking the main control module.

[0010] Furthermore, the energy storage device is a high-capacity surface-mount capacitor, used to quickly store the instantaneous electrical energy generated by NFC passive power supply, and the energy storage battery is a miniaturized lithium-ion rechargeable battery.

[0011] Furthermore, the main control module is connected to the NFC control chip and the motor drive module respectively to obtain the output voltage of the NFC power management circuit and the output voltage of the energy storage battery in real time. When the output voltage of the NFC power management circuit is lower than the voltage of the energy storage battery, the backup power control circuit is turned on, and the energy storage battery provides compensation power to the motor drive module, forming a dual power supply architecture of NFC passive power supply and vibration energy storage supplementation.

[0012] Furthermore, the NFC power management circuit integrates a rectification unit, a filtering unit, and a voltage regulation unit. The induced electrical energy generated by the NFC energy receiving coil is rectified, filtered, and regulated. One path is stored in the energy storage device, and the other path is output to the main control module to wake up the main control module and power it.

[0013] Furthermore, the main control module has a built-in deep sleep unit. Under normal circumstances, the electronic control system is in a deep sleep state. The main control module is only woken up and put into working state when the NFC energy receiving coil generates power and outputs it to the main control module, thus realizing low-power static management.

[0014] Furthermore, it also includes a tailgate housing, which includes an upper tailgate housing and a lower tailgate housing. The lock assembly is integrated inside the tailgate housing, and the electronic control system is integrated inside the lock assembly. An NFC unlocking sensing area is set on the upper tailgate housing at the position corresponding to the NFC sensing antenna.

[0015] Furthermore, the two-wheeled vehicles include electric bicycles and motorcycles, and the tail box is a dedicated storage tail box for two-wheeled vehicles.

[0016] The beneficial effects of this utility model are as follows:

[0017] 1. This application replaces the solar power replenishment scheme with a vibration magnetoelectric conversion energy storage scheme. It uses the vibration that is inevitably generated when the two-wheeled vehicle is in motion to achieve autonomous power generation and energy storage. Regardless of day or night, weather or parking environment, as long as the vehicle is in motion, it can complete the power replenishment. This completely solves the core defect of existing technologies that rely on sunlight and is suitable for use in all scenarios.

[0018] 2. This application adopts a dual power supply architecture of NFC inductive power supply + vibration energy storage backup power supply. When the NFC energy is insufficient, the backup power compensation is automatically triggered to ensure sufficient power for motor unlocking, which fundamentally solves the problems of low unlocking success rate, unlocking lag and instability caused by insufficient NFC energy.

[0019] 3. No need to connect to the vehicle's power supply or install additional wiring, avoiding the risk of aging wiring and short circuits. Installation and replacement are convenient, and it is compatible with the modification and use of most two-wheeled vehicle tail boxes.

[0020] 4. It recovers the vibration energy generated during vehicle operation, with no additional energy consumption and no aging or wear issues associated with solar panels. The overall structure is simple, and the power consumption is extremely low in dormant mode, significantly extending the product's lifespan. Attached Figure Description

[0021] Figure 1 Circuit control diagram for an existing solar-powered NFC near-field unlocking electronic tailgate lock;

[0022] Figure 2 This is a circuit control diagram of an NFC near-field unlocking electronic tailgate lock based on vibration magnetoelectric conversion energy storage technology in an embodiment of this application;

[0023] Figure 3 A perspective view of the electronic tailgate with vibration energy storage, power replenishment, and NFC near-field unlocking in the embodiments of this application;

[0024] Figure 4 This is a three-dimensional view of the lock body assembly in the embodiment of this application;

[0025] Figure 5 This is a perspective view showing the relative positions of the permanent magnet vibrating head, magnetoelectric conversion coil, and AC-DC conversion circuit in the assembly state of the embodiments of this application.

[0026] Figure 6 This is a simplified schematic diagram of the magnetoelectric conversion AC-DC principle in the embodiments of this application.

[0027] Figure Labels

[0028] 1-Lock body assembly, 101-Motor, 102-Lock cylinder, 2-Latch, 3-Main control module, 4-Motor drive module, 5-Permanent magnet vibrating head, 6-Magnetic-electric conversion coil, 7-AC-DC conversion circuit, 8-Energy storage battery, 9-Backup power control circuit, 11-NFC sensing antenna, 12-NFC energy receiving coil, 13-NFC control chip, 14-NFC power management circuit, 15-Energy storage device, 16-Upper shell of tail box, 17-Lower shell of tail box, 18-NFC unlocking sensing area. Detailed Implementation

[0029] The technical solutions of the embodiments of this application will be clearly described below with reference to the accompanying drawings. Obviously, the described embodiments are only some, not all, of the embodiments of this application. All other embodiments obtained by those skilled in the art based on the embodiments of this application are within the scope of protection of this application.

[0030] The terms "first," "second," etc., used in the specification and claims of this application are used to distinguish similar objects and not to describe a specific order or sequence. It should be understood that such use of data can be interchanged where appropriate so that embodiments of this application can be implemented in orders other than those illustrated or described herein, and the objects distinguished by "first," "second," etc., are generally of the same class and the number of objects is not limited; for example, a first object can be one or more. Furthermore, in the specification and claims, "and / or" indicates at least one of the connected objects, and the character " / " generally indicates that the preceding and following objects are in an "or" relationship.

[0031] The following description, in conjunction with the accompanying drawings, details the NFC near-field unlocking electronic tailgate lock based on vibration magnetoelectric conversion energy storage technology provided in this application, through specific embodiments and application scenarios.

[0032] Example 1:

[0033] This application provides an NFC near-field unlocking electronic tailgate lock based on vibration magnetoelectric conversion energy storage technology, applied to the tailgate of a two-wheeled vehicle. It includes a lock body assembly 1, a latch 2, and an electronic control system. The lock body assembly 1 includes a motor 101 and a lock cylinder 102. The output end of the motor 101 is connected to the lock cylinder 102. The lock cylinder 102 is adapted to lock the latch 2. The electronic control system includes an NFC interaction module, a main control module 3, a vibration power supply module, and a motor drive module 4. The motor drive module 4 is electrically connected to the motor 101. The NFC interaction module simultaneously realizes NFC near-field communication unlocking and NFC passive power supply.

[0034] like Figures 2 to 6As shown, due to the above structure, the lock body assembly 1 and the latch 2 are installed inside the tail box of the two-wheeled vehicle. The output of the motor drive module 4 is electrically connected to the power supply pin of the motor 101. The main control module 3 is connected to the NFC interaction module, the vibration power supply module, and the motor drive module 4 respectively, forming a complete electronic control closed loop. This achieves completely independent power supply and contactless unlocking of the tail box lock, eliminating the need for wiring from the two-wheeled vehicle body and avoiding the risks of complicated installation and short circuits caused by wiring from the vehicle body. The NFC interaction module can simultaneously complete two core actions when the user's NFC device is close: one is through Near-field communication completes the two-way interaction and legality verification of the unlocking key. Secondly, it completes passive power extraction through near-field electromagnetic induction, converting NFC radio frequency energy into electrical energy required for system operation, providing basic power supply for the main control module 3 to wake up and execute unlocking commands. At the same time, the vibration power supply module realizes auxiliary power replenishment and storage, solving the core pain points of insufficient instantaneous energy and poor power supply continuity of pure NFC passive power extraction. The main control module 3 can coordinate and control the motor drive module 4 according to the real-time power supply status, and drive the motor 101 to drive the lock cylinder 102 and the latch 2 to complete the locking and unlocking actions, realizing stable and reliable operation of the tailgate lock in all scenarios.

[0035] Example 2:

[0036] In this embodiment, in addition to the structural features of the aforementioned embodiments, the vibration power supply module includes a permanent magnet vibrating head 5, a magnetoelectric conversion coil 6, an AC-DC conversion circuit 7, an energy storage battery 8, and a backup power control circuit 9. The magnetoelectric conversion coil 6 is electrically connected to the input terminal of the AC-DC conversion circuit 7, the output terminal of the AC-DC conversion circuit 7 is electrically connected to the energy storage battery 8, the energy storage battery 8 is electrically connected to the power supply terminal of the motor drive module 4 via the backup power control circuit 9, and the control terminal of the backup power control circuit 9 is signal-connected to the main control module 3.

[0037] In a specific embodiment of this application, the permanent magnet vibrating head 5 is made of a spring with good elasticity and has a permanent magnet embedded inside.

[0038] like Figures 2 to 6As shown, due to the aforementioned structure, the fixed end of the permanent magnet vibrating head is rigidly connected to the housing of the lock body assembly 1. The magnetoelectric conversion coil 6 is fixed on the PCB circuit board inside the lock body assembly 1, and the sensing area of ​​the magnetoelectric conversion coil 6 corresponds perfectly to the swing stroke of the movable end of the permanent magnet vibrating head. The magnetic field of the permanent magnet can completely cover the winding range of the magnetoelectric conversion coil 6. During the two-wheeled vehicle's operation, the continuous vibration generated by the vehicle body is completely transmitted to the permanent magnet vibrating head through the tail box housing and the housing of the lock body assembly 1, causing the permanent magnet vibrating head to oscillate at high frequency with the vibration wave. The embedded permanent magnet moves synchronously with the oscillation, causing the magnetic field of the permanent magnet to generate a sustained magnetic field relative to the winding of the magnetoelectric conversion coil 6. The continuous magnetic line cutting motion generates induced alternating current in the magnetoelectric conversion coil 6. The induced alternating current is transmitted to the AC-DC conversion circuit 7 in real time, and after rectification and voltage stabilization, it is converted into stable direct current, continuously charging the energy storage battery 8. This achieves efficient conversion and long-term storage of vibration waste energy into electrical energy during vehicle operation. When the unlocking process requires additional power, the main control module 3 can control the on / off state of the backup power control circuit 9 to accurately deliver the electrical energy stored in the energy storage battery 8 to the motor drive module 4, providing stable auxiliary power for the unlocking action. This fundamentally solves the problems of unlocking lag, unlocking failure, and unlocking instability caused by insufficient NFC passive power supply.

[0039] Example 3:

[0040] In this embodiment, in addition to the structural features of the aforementioned embodiments, the NFC interaction module includes an NFC sensing antenna 11, an NFC energy receiving coil 12, an NFC control chip 13, an NFC power management circuit 14, and an energy storage device 15. The NFC sensing antenna 11 is signal-connected to the NFC control chip 13, the NFC energy receiving coil 12 is electrically connected to the input terminal of the NFC power management circuit 14, and the output terminal of the NFC power management circuit 14 is electrically connected to the energy storage device 15 and the power supply terminal of the main control module 3, respectively, for converting NFC near-field electromagnetic energy into electrical energy to provide basic power for waking up and unlocking the main control module 3.

[0041] In a specific embodiment of this application, the energy storage device 15 is a large-capacity chip capacitor used to quickly store the instantaneous electrical energy generated by NFC passive power supply, and the energy storage battery 8 is a miniaturized lithium-ion rechargeable battery.

[0042] like Figures 2 to 6As shown, due to the aforementioned structure, the NFC sensing antenna 11 and the NFC energy receiving coil 12 are attached side-by-side and fixed inside the lock body assembly 1. The NFC control chip 13, the NFC power management circuit 14, and the energy storage device 15 are all integrated and soldered onto the PCB circuit board inside the lock body assembly 1, forming a highly integrated modular structure. When the user's NFC device is close to the NFC unlocking sensing area 18 in the trunk, the NFC energy receiving coil 12 can couple and receive the radio frequency electromagnetic field emitted by the NFC device, generating high-frequency induced alternating current. The induced alternating current is transmitted to the NFC power management circuit 14 for energy processing and then split into two outputs: one output is directly sent to the energy storage device 15 (a large-capacity surface-mount capacitor) for rapid energy storage. The system collects and stores instantaneous NFC power in a very short time, providing peak power support for the subsequent unlocking action of motor 101. Another stable output is provided to the power supply end of the main control module 3, providing basic operating power for the power-on wake-up of the main control module 3. At the same time, the NFC sensing antenna 11 can synchronously complete near-field communication with the user's NFC device, transmit unlocking key data bidirectionally, and transmit the received unlocking data to the NFC control chip 13 for preprocessing and initial legality verification, providing data basis for the execution of subsequent unlocking commands. The miniaturized lithium-ion rechargeable battery can achieve long-term energy storage within the limited space of the lock body, complementing the large-capacity chip capacitor in terms of instantaneous and long-term energy storage, adapting to the unlocking power supply needs in different scenarios.

[0043] Example 4:

[0044] In this embodiment, in addition to the structural features of the aforementioned embodiments, the main control module 3 is signal connected to the NFC control chip 13 and the motor drive module 4 respectively, and is used to obtain the output voltage of the NFC power management circuit 14 and the output voltage of the energy storage battery 8 in real time. When the output voltage of the NFC power management circuit 14 is lower than the voltage of the energy storage battery 8, the backup power control circuit 9 is turned on, and the energy storage battery 8 provides compensation power to the motor drive module 4, forming a dual power supply architecture of NFC passive power supply and vibration energy storage supplementation.

[0045] like Figures 2 to 6As shown, due to the above structure, the sampling pins of the main control module 3 are electrically connected to the voltage output terminals of the NFC power management circuit 14 and the energy storage battery 8, respectively. The control output pins of the main control module 3 are electrically connected to the controlled terminal of the backup power control circuit 9, forming a closed-loop power supply control link. During the unlocking process, after the main control module 3 is powered on and woken up, it can collect the two output voltage data of the NFC power management circuit 14 and the energy storage battery 8 in real time and synchronously through the sampling pins, and synchronously complete the final verification of the NFC unlocking key and the real-time monitoring of the power supply status. When the main control module 3 determines through its built-in voltage comparison logic that the output voltage of the NFC power management circuit 14 is lower than the output voltage of the energy storage battery 8, it determines that the current passive power supply energy of the NFC cannot meet the power requirements. When the rated power requirement for the unlocking action of motor 101 is met, the main control module 3 immediately outputs a high-level conduction control signal to the backup power control circuit 9, controlling the backup power control circuit 9 to quickly conduct, connecting the power supply terminal of the energy storage battery 8 and the motor drive module 4. The energy storage battery 8 provides compensating power to the motor drive module 4, forming a dual-power collaborative power supply architecture with the NFC passive power supply, ensuring that the motor drive module 4 can output sufficient drive power to drive motor 101 to complete the unlocking action, completely avoiding the unlocking lag and unlocking failure problems caused by insufficient NFC power. After the unlocking action is completed, the main control module 3 immediately outputs a low-level shutdown signal to control the backup power control circuit 9 to disconnect, stop the power supply output of the energy storage battery 8, reduce unnecessary power loss, and extend the service life of the energy storage battery 8.

[0046] Example 5:

[0047] In this embodiment, in addition to the structural features of the aforementioned embodiments, the NFC power management circuit 14 integrates a rectification unit, a filtering unit, and a voltage regulation unit. The induced electrical energy generated by the NFC energy receiving coil 12 is rectified, filtered, and regulated. One path is stored in the energy storage device 15, and the other path is output to the main control module 3 to wake up the main control module 3 and power it.

[0048] like Figures 2 to 6As shown, due to the aforementioned structure, the rectifier unit, filter unit, and voltage regulator unit are connected in series within the NFC power management circuit 14, forming a complete power processing link. The output terminal of the NFC energy receiving coil 12 is electrically connected to the input terminal of the rectifier unit, and the output terminal of the voltage regulator unit is electrically connected to the power supply terminals of the energy storage device 15 and the main control module 3, respectively. The high-frequency induced AC current generated by the coupling of the NFC energy receiving coil 12 is first transmitted to the rectifier unit, which converts the bidirectional alternating current into unidirectional pulsating DC current. Subsequently, the unidirectional pulsating DC current is transmitted to the filter unit, which filters out the ripple in the current. The noise is eliminated, voltage spikes and random fluctuations are removed, and the output current becomes smooth and stable. The smoothed DC power is then transmitted to the voltage regulator unit, which converts the large fluctuation range of the input voltage into a stable DC voltage of the rated value, completing the entire power processing process. The processed stable DC power is sent to the energy storage device 15 for energy storage, and continuously output to the power supply terminal of the main control module 3, ensuring that the main control module 3 can obtain a stable and continuous operating voltage during the power-on wake-up process. This avoids problems such as restart, crash, and wake-up failure of the main control module 3 due to NFC sensing voltage fluctuations, and ensures the stable operation of the entire unlocking process.

[0049] Example 6:

[0050] In this embodiment, in addition to the structural features of the aforementioned embodiments, the main control module 3 has a built-in deep sleep unit. Under normal circumstances, the electronic control system is in a deep sleep state. Only when the NFC energy receiving coil 12 generates electrical energy and outputs it to the main control module 3, the main control module 3 is woken up to enter the working state, thereby realizing low-power static management.

[0051] like Figures 2 to 6As shown, due to the aforementioned structure, the deep sleep unit is integrated into the internal logic circuit of the main control module 3. It can independently manage the power supply of the peripheral interfaces, processing units, sampling units, and communication units of the main control module 3. Under normal conditions without unlocking operations, the deep sleep unit can control the main control module 3 to shut down all unnecessary peripherals and processing units, retaining only the lowest-power power-on wake-up detection channel, thus putting the entire electronic control system into a deep sleep state. Static power consumption can be reduced to the microampere level, significantly reducing the static energy loss of the energy storage device 15 and the energy storage battery 8, and extending the product's standby lifespan. When the user's NFC device is brought close to the sensor... When the NFC energy receiving coil 12 generates electrical energy and outputs it to the power supply terminal of the main control module 3 via the NFC power management circuit 14, the deep sleep unit detects the rated input voltage and immediately triggers the wake-up logic, sequentially turning on the sampling unit, communication unit, and drive control unit of the main control module 3, enabling the main control module 3 to quickly enter the normal working state within milliseconds and complete the full process control of the unlocking process; after the unlocking action is completed and there is no subsequent operation, the deep sleep unit can control the main control module 3 to shut down the non-essential functional units again after a preset delay and enter the deep sleep state, realizing low-power static management throughout the product life cycle.

[0052] Example 7:

[0053] In this embodiment, in addition to the structural features of the aforementioned embodiments, it also includes a tail box housing, which includes an upper tail box housing 16 and a lower tail box housing 17. The lock body assembly 1 is integrated inside the tail box housing, and the electronic control system is integrated inside the lock body assembly 1. An NFC unlocking sensing area 18 is provided on the upper tail box housing 16 at the position corresponding to the NFC sensing antenna 11.

[0054] like Figures 2 to 6As shown, due to the above structure, the upper shell 16 and lower shell 17 of the tailgate are fitted together to form a complete sealed receiving cavity. The lock body assembly 1 is rigidly fixed to the inner wall of the lower shell 17 of the tailgate by fasteners. The latch 2 is fixed to the inner wall of the upper shell 16 of the tailgate corresponding to the position of the lock cylinder 102 of the lock body assembly 1. The NFC unlocking sensing area 18 is opened on the outer surface of the upper shell 16 of the tailgate. Its opening position corresponds one-to-one with the installation position of the NFC sensing antenna 11 and the NFC energy receiving coil 12 inside the lock body assembly 1. There is no metal shielding obstruction, realizing the integrated design of the tailgate lock and the tailgate shell. The lock body assembly 1 and the electronic control system are completely built into the tailgate shell, with no exposed wires. The road and components possess excellent waterproof, dustproof, and vandal-resistant properties. The precise alignment of the NFC unlocking sensing area 18 and the NFC interaction module minimizes the shielding effect of the tail box shell on NFC near-field communication and electromagnetic induction, ensuring the stability of NFC communication and the conversion efficiency of inductive power extraction. At the same time, the integrated structure allows the vehicle body vibration to be directly and completely transmitted through the tail box shell to the vibration power supply module in the lock body assembly 1, ensuring the efficiency of vibration energy transmission and improving the energy storage effect of magneto-electric conversion. Moreover, the overall structure is easy to install, requiring no drilling or wiring modifications to the two-wheeled vehicle body, and can be directly adapted to the original equipment and aftermarket modification needs of most two-wheeled vehicle tail boxes.

[0055] Example 8:

[0056] In this embodiment, in addition to the structural features of the aforementioned embodiments, the two-wheeled vehicle includes electric bicycles and motorcycles, and the tail box is a special storage tail box for two-wheeled vehicles.

[0057] like Figures 2 to 6 As shown, due to the above-mentioned structure, the two-wheeled vehicle-specific storage tail box is a standardized storage box body adapted to the standard mounting position of the rear of electric bicycles and motorcycles. The installation dimensions of the lock body assembly 1 and the locking stroke of the lock cylinder 102 are adapted to the installation and use requirements of this standardized storage box body. The electronic tail box lock of this embodiment can fully cover the usage requirements of mainstream two-wheeled vehicle models such as electric bicycles, fuel motorcycles, and electric motorcycles on the market. Whether it is a civilian commuter two-wheeled vehicle or a commercial delivery two-wheeled vehicle, it can be directly matched or modified for use. For different vibration frequencies and vibration amplitudes during different vehicle models, the elastic coefficient of the permanent magnet vibrating head can be adjusted to achieve adaptation, ensuring a stable magnetoelectric conversion energy storage effect under all vehicle models. At the same time, NFC near-field unlocking can be adapted to most mainstream user terminal NFC devices such as mobile phones, NFC cards, NFC bracelets, and NFC watches, with strong vehicle model adaptability and usage compatibility, which can meet the diversified needs of different users, different vehicle models, and different usage scenarios.

[0058] It should be noted that, in this document, the terms "comprising," "including," or any other variations thereof are intended to cover non-exclusive inclusion, such that a process, method, article, or apparatus that comprises a list of elements includes not only those elements but also other elements not expressly listed, or elements inherent to such a process, method, article, or apparatus. Without further limitations, an element defined by the phrase "comprising one..." does not exclude the presence of other identical elements in the process, method, article, or apparatus that includes that element. Furthermore, it should be noted that the scope of the methods and apparatuses in the embodiments of this application is not limited to performing functions in the order shown or discussed, but may also include performing functions substantially simultaneously or in the reverse order, depending on the functions involved. For example, the described methods may be performed in a different order than described, and various steps may be added, omitted, or combined. Additionally, features described with reference to certain examples may be combined in other examples.

[0059] The embodiments of this application have been described above with reference to the accompanying drawings. However, this application is not limited to the specific embodiments described above. The specific embodiments described above are merely illustrative and not restrictive. Those skilled in the art can make many other forms under the guidance of this application without departing from the spirit and scope of the claims, and all of these forms are within the protection scope of this application.

Claims

1. An NFC near-field unlocking electronic tailgate lock based on vibration magnetoelectric conversion energy storage technology, applied to the tailgate of a two-wheeled vehicle, comprising a lock body assembly, a latch, and an electronic control system, wherein the lock body assembly includes a motor and a lock cylinder, the output end of the motor is connected to the lock cylinder for transmission, and the lock cylinder is adapted to lock with the latch, characterized in that, The electronic control system includes an NFC interaction module, a main control module, a vibration power supply module, and a motor drive module. The motor drive module is electrically connected to the motor, and the NFC interaction module simultaneously enables NFC near-field communication unlocking and NFC passive power supply.

2. The NFC near-field unlocking electronic tailgate lock based on vibration magnetoelectric conversion energy storage technology according to claim 1, characterized in that, The vibration power supply module includes a permanent magnet vibrating head, a magnetoelectric conversion coil, an AC-DC conversion circuit, an energy storage battery, and a backup power control circuit. The magnetoelectric conversion coil is electrically connected to the input terminal of the AC-DC conversion circuit, and the output terminal of the AC-DC conversion circuit is electrically connected to the energy storage battery. The energy storage battery is electrically connected to the power supply terminal of the motor drive module via the backup power control circuit, and the control terminal of the backup power control circuit is signal-connected to the main control module.

3. The NFC near-field unlocking electronic tailgate lock based on vibration magnetoelectric conversion energy storage technology according to claim 2, characterized in that, The permanent magnet vibrating head is made of a spring and has a permanent magnet embedded inside.

4. The NFC near-field unlocking electronic tailgate lock based on vibration magnetoelectric conversion energy storage technology according to claim 2, characterized in that, The NFC interaction module includes an NFC sensing antenna, an NFC energy receiving coil, an NFC control chip, an NFC power management circuit, and an energy storage device. The NFC sensing antenna is signal-connected to the NFC control chip, the NFC energy receiving coil is electrically connected to the input terminal of the NFC power management circuit, and the output terminal of the NFC power management circuit is electrically connected to the energy storage device and the power supply terminal of the main control module, respectively. It is used to convert NFC near-field electromagnetic energy into electrical energy to provide basic power for waking up and unlocking the main control module.

5. The NFC near-field unlocking electronic tailgate lock based on vibration magnetoelectric conversion energy storage technology according to claim 4, characterized in that, The energy storage device is a high-capacity surface-mount capacitor used to quickly store the instantaneous electrical energy generated by NFC passive power supply, and the energy storage battery is a miniaturized lithium-ion rechargeable battery.

6. The NFC near-field unlocking electronic tailgate lock based on vibration magnetoelectric conversion energy storage technology according to claim 1, characterized in that, The main control module is connected to the NFC control chip and the motor drive module respectively. It is used to obtain the output voltage of the NFC power management circuit and the output voltage of the energy storage battery in real time. When the output voltage of the NFC power management circuit is lower than the voltage of the energy storage battery, the backup power control circuit is turned on, and the energy storage battery provides compensation power to the motor drive module, forming a dual power supply architecture of NFC passive power supply and vibration energy storage supplementation.

7. The NFC near-field unlocking electronic tailgate lock based on vibration magnetoelectric conversion energy storage technology according to claim 4, characterized in that, The NFC power management circuit integrates a rectification unit, a filtering unit, and a voltage regulation unit. The induced electrical energy generated by the NFC energy receiving coil is rectified, filtered, and regulated. One path is stored in the energy storage device, and the other path is output to the main control module to wake up the main control module and power it.

8. The NFC near-field unlocking electronic tailgate lock based on vibration magnetoelectric conversion energy storage technology according to claim 1, characterized in that, The main control module has a built-in deep sleep unit. Under normal circumstances, the electronic control system is in a deep sleep state. The main control module is only woken up and put into working state when the NFC energy receiving coil generates power and outputs it to the main control module, so as to realize low power static management.

9. The NFC near-field unlocking electronic tailgate lock based on vibration magnetoelectric conversion energy storage technology according to claim 1, characterized in that, It also includes a tail box housing, which includes an upper tail box housing and a lower tail box housing. The lock body assembly is integrated inside the tail box housing, and the electronic control system is integrated inside the lock body assembly. The upper tail box housing has an NFC unlocking sensing area located at the position of the NFC sensing antenna.

10. The NFC near-field unlocking electronic tailgate lock based on vibration magnetoelectric conversion energy storage technology according to claim 1, characterized in that, The two-wheeled vehicles include electric bicycles and motorcycles, and the tail box is a special storage tail box for two-wheeled vehicles.

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