Charging base for self-inspection of lithium battery of unmanned aerial vehicle and use method

Abstract

The invention discloses a charging base for self-inspection of a lithium battery of an unmanned aerial vehicle and a use method, and relates to the technical field of unmanned aerial vehicle charging. According to the charging base for lithium battery self-inspection of the unmanned aerial vehicle and the use method, the charging base comprises a charging base body and an unmanned aerial vehicle battery placement box, the charging base body is provided with a bottom plate, the unmanned aerial vehicle battery placement box is provided with a protection box, a lithium battery is arranged in the protection box, and a connecting plate is arranged at the lower end of the protection box; a guide plate is arranged in the protection box, 15 columns and 15 transverse measuring rods are arranged on the guide plate, guide sleeves are arranged between the measuring rods and the guide plate, 15 columns and 15 transverse electromagnetic coil blocks are arranged on the connecting plate, magnetic rings are arranged at the lower ends of the measuring rods, a power supply connecting plate is arranged at the lower end of the connecting plate, and a cover plate is arranged at the upper end of the protection box. An unmanned aerial vehicle connecting frame is arranged above the cover plate, the unmanned aerial vehicle connecting frame is connected with the unmanned aerial vehicle body, and a battery electricity taking plate is arranged at the front end of the protection box.

Description

Technical Field

[0001] This invention relates to the field of drone charging technology, specifically to a charging base for self-testing lithium batteries in drones and its usage method. Background Technology

[0002] Unmanned aerial vehicles (UAVs), also known as drones, are unmanned aircraft controlled by radio remote control equipment and onboard program control devices, or operated autonomously by an onboard computer, either fully or intermittently. Depending on their application, UAVs can be divided into military and civilian categories. In military applications, UAVs can be further divided into reconnaissance aircraft and target drones. In the civilian sector, however, the real demand for UAVs lies in their integration with industry applications; their widespread use in aerial photography, agriculture, plant protection, miniature selfies, express delivery, disaster relief, wildlife observation, infectious disease monitoring, surveying, news reporting, power line inspection, disaster relief, film and television production, and even romantic creations, has greatly expanded the functional applications of UAVs.

[0003] For example, patent number CN 218877623 U discloses a charging dock for drones, including a charging dock box. Multiple power indicator lights and a power socket are fixedly installed on one side of the charging dock box, with the power indicator lights located in front of the power socket. Two drone pressure plates are movably installed at both the front and rear ends of the charging dock box. Telescopic mounting rods are movably installed on both sides of the charging dock box, with an extension frame integrally formed at the end of the telescopic mounting rod furthest from the charging dock box. This drone charging dock allows direct insertion of a drone battery for charging. It also allows the extension frame to unfold to both sides, the lifting charging plate to move upwards, and then the drone to be placed directly in for positioning and secured by the drone pressure plates. This enables the drone to directly connect to the charging plug for charging, thus realizing two charging methods for both the drone battery and the drone itself, making it more convenient to use the charging dock for charging drones.

[0004] For example, patent number CN 218477644 U discloses a drone charging base, belonging to the field of drones. It includes a charging base and a connecting device mounted on the charging base. The charging base has a limiting mechanism for fixing the connecting device. The connecting device includes a connecting plate adapted to the bottom. The connecting plate is fixed to the drone via a slot at the bottom and two screws at the top. Supports are connected to both sides of the connecting plate, and the supports include diagonal bars and crossbars. Support legs are connected to both ends of the crossbars. This drone charging base, by connecting the connecting device to the drone, makes the drone more stable during landing. By incorporating shock-absorbing springs and shock-absorbing rods on the supports, the drone is cushioned during landing, reducing the risk of impact. After the drone returns to its starting position, the limiting mechanism fixes the connecting device to the charging base, thus maintaining the drone's stability during charging.

[0005] While the two patents mentioned above enable drone battery charging, they lack a device for monitoring the drone battery. Existing technologies primarily focus on the charging function and physical fixation during the charging process, lacking effective real-time monitoring methods for potential problems such as internal structural deformation and cell inconsistencies that may occur during long-term use of lithium batteries. For example, during charge-discharge cycles, the expansion or contraction of the cells in a drone lithium battery can cause changes in its internal spatial structure; if this is not detected in time, it may affect the battery's charging and discharging efficiency and safety. Summary of the Invention

[0006] (a) Technical problems to be solved To address the shortcomings of existing technologies, this invention provides a charging base for self-testing lithium batteries in drones and a method for using it. This solves the problem that existing drone charging bases only provide charging and physical fixation, lacking effective real-time monitoring of potential structural deformations that may occur during long-term use of lithium batteries. Furthermore, it fails to detect timely changes in the internal spatial structure of the drone's lithium battery due to cell expansion or contraction during charge-discharge cycles, which could potentially affect battery charging and discharging efficiency and safety. (II) Technical Solution To achieve the above objectives, the present invention provides the following technical solution: a charging base for self-testing a lithium battery of a drone and a method of use, comprising a charging base and a drone battery housing, wherein the charging base is provided with a base plate, the drone battery housing is provided with a protective box, the protective box contains a lithium battery, the lower end of the protective box is provided with a connecting plate, the inside of the protective box is provided with a guide plate, the guide plate is provided with 15 columns and 15 rows of measuring rods, a guide sleeve is provided between the measuring rods and the guide plate, the connecting plate is provided with 15 columns and 15 rows of electromagnetic coil blocks, the lower end of the measuring rods is provided with a magnetic ring, the lower end of the connecting plate is provided with a power supply connecting plate, the upper end of the protective box is provided with a cover plate, a drone connecting frame is provided above the cover plate, the drone connecting frame is connected to the drone body, the front end of the protective box is provided with a battery power-taking plate, the battery power-taking plate is connected to a power-taking interface, the right front end of the lithium battery is provided with a charging / discharging contact, the charging / discharging contact is in contact with the battery power-taking plate.

[0007] Preferably, push frames are provided on the left and right sides of the protective box, the push frames are connected to clamps, a push frame sleeve is provided between the push frames and the protective box, and the circuits inside the battery power take-up board and the power supply connection board are connected.

[0008] Preferably, piston cylinders are provided on the left and right sides of the protective box, the piston cylinders are connected to the push frame inside the protective box, and a stabilizing plate is provided at the tail end of the push frame.

[0009] Preferably, piston cylinders are provided on the left and right sides of the protective box, the piston cylinders are connected to the push frame inside the protective box, and a stabilizing plate is provided at the tail end of the push frame.

[0010] Preferably, the base plate is provided with locking boxes on all four sides, and two spring push rods are provided inside the locking boxes. A locking rod is provided between the spring push rods, and a locking spring is provided on the spring push rod. The base plate is in contact with the power supply connection plate.

[0011] Preferably, the base plate is provided with electromagnetic boxes on all four sides, and a fixed electromagnetic coil block is provided inside the electromagnetic box. The end of the spring push rod passes through the locking box and is provided with a connecting crossbar, and the connecting crossbar is provided with a movable electromagnetic coil block.

[0012] Preferably, the structure of the drone battery mounting box can be applied to the field of power battery testing for new energy vehicles.

[0013] A charging base for self-testing lithium batteries of drones and a method of using it are disclosed. The charging base for self-testing lithium batteries of drones is described above, and the specific operation is as follows: Step S1: The drone, carrying the drone battery housing, lands on the base plate of the charging base via the drone connecting frame. At this time, the power supply connection plate contacts the base plate, realizing the initial power connection preparation. At the same time, when the power supply connection plate moves down, it presses the locking rod to overcome the elastic force of the locking spring, driving the spring push rod to move, so that the locking rod moves into the locking box, and the drone battery housing and the base plate complete the mechanical locking. Step S2: While the mechanical locking is completed, because the battery power board at the front of the protective box is connected to the inside of the charging base, and the charging and discharging contacts at the right front of the lithium battery are in full contact with the battery power board to form a complete charging circuit, the charging base begins to charge the lithium battery. Step S3: During charging, the electromagnetic coil block is energized to generate a magnetic field. This magnetic field repels the magnetic force of the magnetic ring at the lower end of the measuring rod, causing the 15 columns and 15 rows of measuring rods inside the protective box to move upwards and contact the lithium battery, monitoring the structural changes of the lithium battery in real time. The guide sleeve on the guide plate ensures that the measuring rod can only move vertically. When the lithium battery undergoes volume changes due to cell expansion or contraction, it will squeeze or pull the corresponding measuring rod, causing the magnetic ring at the lower end of the measuring rod to move up and down, changing its relative distance with the corresponding electromagnetic coil block on the connecting plate. Step S4: Changes in the relative position of the electromagnetic coil block and the magnetic ring will cause changes in the induced electromotive force or inductance of the electromagnetic coil block. These changes are transmitted in real time to the control module of the charging base through the internal circuit. The control module analyzes and processes the data and converts it into the deformation of each area of ​​the lithium battery. If the deformation of a certain area exceeds the preset safety threshold, the control module will immediately issue an alarm and decide whether to suspend charging according to the situation to avoid battery damage or safety accidents caused by excessive structural deformation. Step S5: At the same time, the piston cylinders on the left and right sides of the protective box drive the pusher to move within the pusher sleeve according to the instructions of the control module, thereby driving the clamping plate to clamp lithium batteries of different sizes appropriately. The stabilizing plate at the tail end of the pusher ensures that the pusher moves smoothly and avoids uneven clamping force causing additional stress to the lithium battery. The clamping force can be dynamically adjusted according to the real-time status of the lithium battery, ensuring the stability of the lithium battery while also providing a stable environment for the accurate measurement of the measuring rod. Step S6: After charging is complete, the fixed electromagnetic coil block inside the electromagnetic box is energized, generating a magnetic field that attracts the moving electromagnetic coil block. This pushes the connecting crossbar, causing the spring push rod to move outward from the locking box, compressing the locking spring and causing the locking rod to retract from the locked position, thus releasing the mechanical lock on the drone battery housing box. Subsequently, the drone takes off with the fully charged and self-tested drone battery housing box via the drone connecting frame to perform its mission. If any abnormality is found in the lithium battery during charging or self-testing, such as excessive deformation, the control module will issue an alarm while maintaining the locked state and transmitting the abnormal data to an external terminal through the power interface, reminding staff to conduct further inspection and maintenance.

[0014] (III) Beneficial Effects This invention provides a charging base for self-testing lithium batteries in drones and a method for using it. It has the following beneficial effects: This device, by incorporating a 15-column, 15-horizontal array of measuring rods inside a protective enclosure, along with a guide cylinder, electromagnetic coil block, and magnetic ring, can accurately sense changes in the internal spatial structure of lithium batteries caused by cell expansion or contraction during charge-discharge cycles. When the lithium battery undergoes structural deformation, it compresses the corresponding measuring rod, altering the relative position between the magnetic ring at the lower end of the measuring rod and the electromagnetic coil block on the connecting plate. This changes the electromagnetic induction parameters, enabling real-time, dynamic monitoring of lithium battery structural deformation. This effectively solves the problem of the lack of such monitoring methods in existing technologies, providing early warning for the safe use of batteries.

[0015] This device is based on an improvement of existing equipment, so the improvement cost is relatively low and it will not cause a large amount of existing equipment to be discarded. It ensures the processing effect while reducing the investment in improvement costs, making it suitable for large-scale production. Attached Figure Description

[0016] Figure 1 A schematic diagram of the charging base structure for self-testing lithium batteries of drones; Figure 2 A front sectional view of a charging dock for self-testing lithium batteries of a drone; Figure 3 A side sectional view of the charging base for self-testing lithium batteries of a drone; Figure 4 CC cross-sectional view of a charging dock for self-testing lithium batteries of drones; Figure 5 Cross-sectional view of the charging base EE for self-testing lithium batteries of drones.

[0017] In the diagram: 1. Drone battery housing; 101. Protective box; 102. Connecting plate; 103. Guide plate; 104. Measuring rod; 105. Guide sleeve; 106. Electromagnetic coil block; 107. Magnetic ring; 108. Power supply connecting plate; 109. Cover plate; 110. Battery power take-off plate; 111. Power take-off interface; 112. Lithium battery; 113. Clamping plate; 114. Push frame; 115. Push frame sleeve; 116. Stabilizing plate; 117. Piston cylinder; 118. Charging and discharging contacts; 119. Drone connecting frame; 2. Charging base; 21. Base plate; 22. Locking box; 23. Spring push rod; 24. Locking rod; 25. Locking spring; 26. Connecting crossbar; 27. Moving electromagnetic coil block; 28. Fixed electromagnetic coil block; 29. ​​Electromagnetic box. Detailed Implementation

[0018] The technical solutions of the embodiments of the present invention will be clearly and completely described below with reference to the accompanying drawings. Obviously, the described embodiments are only some embodiments of the present invention, and not all embodiments. Based on the embodiments of the present invention, all other embodiments obtained by those skilled in the art without creative effort are within the scope of protection of the present invention.

[0019] Please see Figure 1-5This invention provides a technical solution: a charging base for self-testing lithium batteries of unmanned aerial vehicles (UAVs) and a method of use, comprising a charging base 2 and a UAV battery housing 1. The charging base 2 is provided with a base plate 21, and locking boxes 22 are provided on the four sides of the base plate 21. Two spring push rods 23 are provided inside the locking boxes 22, and a locking rod 24 is provided between the spring push rods 23. Locking springs 25 are provided on the spring push rods 23. The base plate 21 is in contact with a power supply connection plate 108. Electromagnetic boxes 29 are provided on the four sides of the base plate 21, and a fixed electromagnetic coil block 28 is provided inside the electromagnetic box 29. The tail end of the spring push rod 23 passes through the lock. The fixed box 22 is equipped with a connecting crossbar 26, and the connecting crossbar 26 is equipped with a movable electromagnetic coil block 27. The UAV battery mounting box 1 is equipped with a protective box 101. The protective box 101 is equipped with pushers 114 on the left and right sides. The pushers 114 are connected to clamps 113. A pusher sleeve 115 is provided between the pushers 114 and the protective box 101. The battery power taking board 110 and the power supply connection board 108 are connected to the internal circuit. The protective box 101 is equipped with piston cylinders 117 on the left and right sides. The piston cylinders 117 are connected to the pushers 114 inside the protective box 101. The tail end of the pusher 114 is equipped with a stabilizing plate 116. Piston cylinders 117 are provided on the left and right sides of the protective box 101. The piston cylinders 117 are connected to the push frame 114 inside the protective box 101. A stabilizing plate 116 is provided at the tail end of the push frame 114. A lithium battery 112 is provided inside the protective box 101. A connecting plate 102 is provided at the lower end of the protective box 101. A guide plate 103 is provided inside the protective box 101. The guide plate 103 is provided with 15 columns and 15 horizontal measuring rods 104. A guide sleeve 105 is provided between the measuring rods 104 and the guide plate 103. A 15 column and 15 horizontal electromagnetic coil block 106 is provided at the lower end of the measuring rods 104. The protective box 101 has a magnetic ring 107, a power supply connection plate 108 at the lower end of the connecting plate 102, a cover plate 109 at the upper end of the protective box 101, a drone connection frame 119 above the cover plate 109, the drone connection frame 119 being connected to the drone body, a battery power take-off plate 110 at the front end of the protective box 101, the battery power take-off plate 110 being connected to a power take-off interface 111, and a charging / discharging contact 118 at the right front end of the lithium battery 112, the charging / discharging contact 118 being in contact with the battery power take-off plate 110. The structure of the drone battery housing 1 can be applied to the field of power battery testing for new energy vehicles.

[0020] A charging base for self-testing lithium batteries of drones and a method of using it are disclosed. The charging base for self-testing lithium batteries of drones is described above, and the specific operation is as follows: Step S1: The drone, carrying the drone battery housing 1, lands on the base plate 21 of the charging base 2 via the drone connecting frame 119. At this time, the power supply connecting plate 108 contacts the base plate 21, realizing the initial power connection preparation. At the same time, when the power supply connecting plate 108 moves down, it presses the locking rod 24 to overcome the elastic force of the locking spring 25, driving the spring push rod 23 to move, so that the locking rod 24 moves into the locking box 22, so that the drone battery housing 1 and the base plate 21 are mechanically locked. Step S2: While the mechanical locking is completed, because the battery power board 110 at the front end of the protective box 101 is connected to the inside of the charging base 2, and the charging and discharging contact 118 at the right front end of the lithium battery 112 is in full contact with the battery power board 110 to form a complete charging circuit, the charging base 2 begins to charge the lithium battery 112. Step S3: During the charging process, the electromagnetic coil block 106 is energized to generate a magnetic field. This magnetic field repels the magnetic force of the magnetic ring 107 at the lower end of the measuring rod 104, causing the 15 columns and 15 rows of measuring rods 104 inside the protective box 101 to move upward and contact the lithium battery 112, thereby monitoring the structural changes of the lithium battery 112 in real time. The guide sleeve 105 on the guide plate 103 ensures that the measuring rod 104 can only move in the vertical direction. When the lithium battery 112 undergoes volume changes due to cell expansion or contraction, it will squeeze or pull the corresponding measuring rod 104. The magnetic ring 107 at the lower end of the measuring rod 104 moves up and down accordingly, changing its relative distance with the corresponding electromagnetic coil block 106 on the connecting plate 102. Step S4: Changes in the relative position of the electromagnetic coil block 106 and the magnetic ring 107 will cause changes in the induced electromotive force or inductance of the electromagnetic coil block 106. These changes are transmitted in real time to the control module of the charging base 2 through the internal circuit. The control module analyzes and processes the data and converts it into the deformation of each area of ​​the lithium battery 112. If the deformation of a certain area exceeds the preset safety threshold, the control module will immediately issue an alarm and decide whether to suspend charging according to the situation to avoid battery damage or safety accidents caused by excessive structural deformation. Step S5: Simultaneously, the piston cylinders 117 on both sides of the protective box 101 drive the pusher 114 to move within the pusher sleeve 115 according to the instructions of the control module, thereby driving the clamping plate 113 to appropriately clamp the lithium batteries 112 of different sizes; the stabilizing plate 116 at the tail end of the pusher 114 ensures that the pusher 114 moves smoothly, avoiding uneven clamping force from causing additional stress to the lithium battery 112; the magnitude of the clamping force can be dynamically adjusted according to the real-time status of the lithium battery 112, ensuring the stability of the lithium battery 112 while also providing a stable environment for the accurate measurement of the measuring rod 104; Step S6: After charging is complete, the fixed electromagnetic coil block 28 inside the electromagnetic box 29 is energized, generating a magnetic field that attracts the moving electromagnetic coil block 27, pushing the connecting crossbar 26 to move the spring push rod 23 to the outside of the locking box 22, compressing the locking spring 25, causing the locking rod 24 to retract from the locked position, and releasing the mechanical lock on the drone battery housing box 1; subsequently, the drone takes off with the fully charged and self-tested drone battery housing box 1 via the drone connecting frame 119 to perform the mission; if an abnormality is found in the lithium battery 112 during charging or self-testing, such as excessive deformation, the control module will issue an alarm while maintaining the locked state, and transmit the abnormal data to the external terminal through the power interface 111 to remind the staff to perform further inspection and maintenance.

[0021] In summary, this device, by incorporating a 15-column, 15-horizontal array of measuring rods inside the protective enclosure, along with a guide cylinder, electromagnetic coil block, and magnetic ring, can accurately sense changes in the internal spatial structure of lithium batteries caused by cell expansion or contraction during charge-discharge cycles. When the lithium battery undergoes structural deformation, it compresses the corresponding measuring rod, altering the relative position between the magnetic ring at the lower end of the measuring rod and the electromagnetic coil block on the connecting plate. This changes the electromagnetic induction parameters, enabling real-time, dynamic monitoring of lithium battery structural deformation. This effectively solves the problem of the lack of such monitoring methods in existing technologies, providing early warning for the safe use of batteries.

[0022] It should be noted that, in this document, relational terms such as "first" and "second" are used only to distinguish one entity or operation from another, and do not necessarily require or imply any such actual relationship or order between these entities or operations. Furthermore, 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 process, method, article, or apparatus.

[0023] Although embodiments of the invention have been shown and described, it will be understood by those skilled in the art that various changes, modifications, substitutions and alterations can be made to these embodiments without departing from the principles and spirit of the invention, the scope of which is defined by the appended claims and their equivalents.

Claims

1. A charging base for self-checking of a lithium battery of a drone, comprising a charging base (2) and a drone battery placing box (1), wherein the charging base (2) is provided with a bottom plate (21), and the drone battery placing box (1) is provided with a protective box (101), and the protective box (101) is internally provided with a lithium battery (112), characterized in that: The protective box (101) is provided with a connecting plate (102) at the lower end, and is internally provided with a guide plate (103), the guide plate (103) is provided with 15 columns and 15 horizontal measuring rods (104), a guide sleeve (105) is arranged between the measuring rod (104) and the guide plate (103), the connecting plate (102) is provided with 15 columns and 15 horizontal electromagnetic coil blocks (106), the measuring rod (104) is provided with a magnetic ring (107) at the lower end, the connecting plate (102) is provided with a power supply connecting plate (108) at the lower end, the protective box (101) is provided with a cover plate (109) at the upper end, a UAV connecting frame (119) is arranged above the cover plate (109), the UAV connecting frame (119) is connected with the UAV body, the protective box (101) is provided with a battery power taking plate (110) at the front end, the battery power taking plate (110) is connected with a power taking interface (111), a lithium battery (112) is provided with a charge-discharge contact (118) at the right front end, and the charge-discharge contact (118) and the battery power taking plate (110) are in contact with each other. ​ 2. The charging base for self-checking of a lithium battery of a UAV according to claim 1, characterized in that: The protective box (101) is provided with a push frame (114) on the left and right sides, the push frame (114) is connected with a clamping plate (113), a push frame sleeve (115) is arranged between the push frame (114) and the protective box (101), and the circuit inside the battery power taking plate (110) and the power supply connecting plate (108) is connected.

3. The charging base for self-checking of a lithium battery of a UAV according to claim 1, characterized in that: The protective box (101) is provided with a piston cylinder (117) on the left and right sides, the piston cylinder (117) is connected with the push frame (114) on the inside of the protective box (101), and the tail end of the push frame (114) is provided with a stabilizing plate (116).

4. The charging base for self-checking of a lithium battery of a UAV according to claim 1, characterized in that: The bottom plate (21) is provided with a locking box (22) on four sides, two spring push rods (23) are arranged inside the locking box (22), a locking rod (24) is arranged between the spring push rods (23), the spring push rods (23) are provided with locking springs (25), and the bottom plate (21) and the power supply connecting plate (108) are in contact with each other.

5. The charging base for self-checking of a lithium battery of a UAV according to claim 1, characterized in that: The bottom plate (21) is provided with an electromagnetic box (29) on four sides, the electromagnetic box (29) is internally provided with a fixed electromagnetic coil block (28), the tail end of the spring push rod (23) passes through the locking box (22) and is provided with a connecting cross rod (26), and the connecting cross rod (26) is provided with a moving electromagnetic coil block (27).

6. The charging base for self-checking of a lithium battery of a UAV according to claim 1, characterized in that: The structure of the unmanned aerial vehicle battery storage box (1) can be applied to the power battery detection field of new energy vehicles.

7. A method for using a charging base for self-checking a lithium battery of a drone, characterized in that: The lithium battery self-checking charging base of the unmanned aerial vehicle according to any one of claims 1-5, the specific operation is as follows: Step S1: The unmanned aerial vehicle carries the unmanned aerial vehicle battery storage box (1) to land on the bottom plate (21) of the charging base (2) through the unmanned aerial vehicle connecting frame (119), at this time the power supply connecting plate (108) is in contact with the bottom plate (21), realizing the initial power connection preparation, and at the same time, when the power supply connecting plate (108) moves downward, it presses the locking rod (24) to overcome the elastic force of the locking spring (25), drives the spring push rod (23) to move, and makes the locking rod (24) move to the inside of the locking box (22), so that the unmanned aerial vehicle battery storage box (1) and the bottom plate (21) are mechanically locked; Step S2: At the same time of completing the mechanical locking, because the battery power taking plate (110) at the front end of the protection box (101) is connected with the inside of the charging base (2), and the charge-discharge contact (118) at the right front end of the lithium battery (112) is in full contact with the battery power taking plate (110), a complete charging circuit is formed, so the charging base (2) starts to charge the lithium battery (112); Step S3: In the charging process, the electromagnetic coil block (106) is energized to generate a magnetic field, which repels the magnetic force of the magnetic ring (107) at the lower end of the measuring rod (104), so that the 15 columns and 15 horizontal measuring rods (104) in the inside of the protection box (101) move up and contact with the lithium battery (112), which monitors the structural change of the lithium battery (112) in real time, the guide sleeve (105) on the guide plate (103) ensures that the measuring rod (104) can only move in the vertical direction, when the lithium battery (112) expands or shrinks due to the swelling of the battery cell or the contraction, it will squeeze or pull the corresponding position of the measuring rod (104), the magnetic ring (107) at the lower end of the measuring rod (104) moves up and down accordingly, changing the relative distance between it and the corresponding electromagnetic coil block (106) on the connecting plate (102); Step S4: The change of the relative position of the electromagnetic coil block (106) and the magnetic ring (107) will cause the change of the induced electromotive force or inductance of the electromagnetic coil block (106), these change data are transmitted to the control module of the charging base (2) in real time through the internal circuit, the control module analyzes and processes the data, and converts it into the deformation amount of each area of the lithium battery (112), if the deformation amount of a certain area exceeds the preset safety threshold, the control module will immediately issue an alarm, and decide whether to suspend charging according to the situation, in order to avoid the damage or safety accident of the battery caused by excessive structural deformation; Step S5: At the same time, the piston cylinder (117) on the left and right sides of the protection box (101) drives the push frame (114) to move in the push frame sleeve (115) according to the instruction of the control module, and drives the clamping plate (113) to clamp the lithium battery (112) of different sizes, the stable plate (116) at the tail end of the push frame (114) ensures the smooth movement of the push frame, avoids the uneven clamping force to the lithium battery (112) causing additional stress, and the size of the clamping force can be dynamically adjusted according to the real-time state of the lithium battery (112), which ensures the stability of the lithium battery (112) and provides a stable environment for accurate measurement of the measuring rod (104); Step S6: After charging is completed, the fixed electromagnetic coil block (28) in the electromagnetic box (29) is powered on to generate a magnetic field that attracts the moving electromagnetic coil block (27), pushes the connecting cross rod (26) to drive the spring push rod (23) to move outward from the locking box (22), compresses the locking spring (25), and makes the locking rod (24) retract from the locking position to release the mechanical locking of the unmanned aerial vehicle battery storage box (1). Subsequently, the unmanned aerial vehicle takes off to perform a task by carrying the fully charged and self-checked unmanned aerial vehicle battery storage box (1) through the unmanned aerial vehicle connecting frame (119). If abnormal conditions are found in the lithium battery (112) during charging or self-checking, such as excessive deformation, the control module will issue an alarm while maintaining the locking state and transmit abnormal data to the external terminal through the power take-off interface (111) to remind the staff to further check and maintain.

Images