Detachable battery device of unmanned aerial vehicle

Abstract

The utility model relates to the technical field of unmanned aerial vehicles, in particular to an unmanned aerial vehicle detachable battery device which comprises a connecting mechanism and a battery box. The connecting mechanism comprises a mounting disc fixedly mounted on the unmanned aerial vehicle body, a lock catch needle is fixedly arranged on the side, away from the unmanned aerial vehicle body, of the mounting disc, and a first annular electrode plate A is arranged on the lock catch needle; the battery box comprises a first annular electrode plate B, a guide sleeve is fixedly installed on one side face of the first annular electrode plate B, a limiting disc is fixed to the outer side of the end, away from the first annular electrode plate B, of the guide sleeve, and a metal lock catch is arranged on the side, away from the first annular electrode plate B, of the limiting disc; the lock catch needle can penetrate through the guide sleeve and is locked with the metal lock catch; one side surface, close to the guide sleeve, of the first annular electrode plate B is in threaded connection with a first shell; a battery bin is formed in the inner side of the first shell and located between the first annular electrode plate B and the limiting disc. According to the scheme, the battery of the unmanned aerial vehicle can be quickly disassembled and assembled.

Description

Technical Field

[0001] The utility model relates to the technical field of unmanned aerial vehicles, in particular to a detachable battery device for unmanned aerial vehicles. Background Art

[0002] At present, drones have been widely used in many fields such as industry, agriculture, surveying and mapping, and security. However, the limited capacity of drone batteries has seriously affected the flight time of drones. In order to increase the flight time of drones, the battery capacity must be increased. However, the increase in battery capacity will inevitably lead to an increase in battery weight, thereby increasing the power consumption of drones, which in turn shortens the flight time. The defects of short flight time and intermittent operation of drone batteries have seriously hindered the development of drone industrialization.

[0003] One method is to achieve uninterrupted and continuous operation of the drone by automatically replacing the battery. At present, drone battery replacement devices have appeared on the market, but most of them require additional complex mechanical devices such as manipulators, lifting platforms, etc. to replace manual battery replacement. These devices are large and bulky, with complex procedures, and the battery replacement is difficult, time-consuming, and costly. For example, the existing Chinese patent application CN117585220A discloses a drone battery replacement manipulator, which designs a series of precise mechanical component systems such as a support seat, a clamping mechanism, and a knob mechanism. However, the connection between the drone and the battery is complicated, and the mechanical arm needs to be finely controlled, and the battery replacement is inconvenient; Patent CN219873876U discloses a drone battery buckle structure, which squeezes and fits the buckle card plate through an elastic member, and requires a later operator or mechanical structure to pull the card plate to pull out the battery. These patents use manual or mechanical arms to replace the battery for the drone, which wastes time and is inefficient. Therefore, it is urgent to find a new detachable battery device that can improve the endurance of the drone and is lightweight, simple in structure, short in time, low in cost, and has no adverse effects on the flight of the drone. Utility Model Content

[0004] 1. Technical issues to be resolved

[0005] In view of the deficiencies in the prior art, the utility model provides a detachable battery device for a drone, which can realize the rapid disassembly and assembly of the drone battery, and has the advantages of simple battery replacement structure, convenient operation, fast speed and high efficiency.

[0006] (II) Technical solution

[0007] To achieve the above-mentioned purpose, an embodiment of the present application provides a detachable battery device for a drone, comprising a connecting mechanism fixedly mounted on a drone body and a battery box detachably mounted on the connecting mechanism; the connecting mechanism comprises a mounting plate fixedly mounted on the drone body, a locking pin is fixedly arranged on a side of the mounting plate away from the drone body, and a first annular electrode plate A is arranged on the locking pin; the battery box comprises a first annular electrode plate B, a guide sleeve is fixedly mounted on a side of the first annular electrode plate B, a limiting disk is fixedly arranged on the outer side of an end of the guide sleeve away from the first annular electrode plate B, and a metal locking disk is arranged on a side of the limiting disk away from the first annular electrode plate B; the locking pin can pass through the guide sleeve and be locked with the metal locking disk; a first outer shell is threadedly connected to a side of the first annular electrode plate B close to the guide sleeve; a battery compartment is formed on the inner side of the first outer shell and between the first annular electrode plate B and the limiting disk.

[0008] Preferably, the first annular electrode plate A is conical in shape, and two annular copper poles A are fixedly installed on a side of the first annular electrode plate A close to the first annular electrode plate B; the first annular electrode plate B includes a first conical plate with a conical shape, and the first conical plate is provided with through mounting holes spaced apart in the circumferential direction, and a plurality of copper poles B are arranged at the mounting holes, and the copper poles B include a first copper pole B and a second copper pole B, and the first copper pole B and the second copper pole B are respectively provided with a plurality of them and are respectively distributed in a ring shape; the two annular copper poles A are in contact with the first copper pole B and the second copper pole B, respectively; the first copper pole B and the second copper pole B are respectively connected to the positive and negative poles of the battery on one side close to the battery compartment.

[0009] Preferably, a limiting ring is integrally formed on the outer side of the first conical plate, and the limiting ring is threadedly connected to the first outer shell.

[0010] Preferably, the first annular electrode plate A is slidably sleeved on the locking pin; and a first spring is fixedly connected between the mounting disk and the first annular electrode plate A.

[0011] Preferably, the end of the first shell away from the first annular electrode plate B is threadedly connected to the second shell, and the end of the second shell away from the first shell is integrally formed with a second conical plate; the metal lock is installed inside the second shell.

[0012] Preferably, the metal lock buckle includes a limiting sleeve fixed on the limiting plate; the limiting sleeve and the guide sleeve are coaxially arranged; the limiting sleeve has a smaller diameter at one end close to the limiting plate, and a larger diameter at the end away from the limiting plate; a first mounting ring is fixedly arranged on the side of the second conical plate close to the limiting plate, and the first mounting ring and the limiting sleeve are coaxially arranged; a second mounting ring is movably arranged on the inner side of the limiting sleeve, and a cover plate is integrally formed at one end of the second mounting ring away from the first mounting ring, and a second spring is fixedly connected between the first mounting ring and the second mounting ring, and the second spring is a compression spring; an end plate is arranged on the side of the cover plate close to the limiting plate, and the end plate is flat The cover plate is arranged in a row, and the area of ​​the end plate is smaller than that of the cover plate; a support column is arranged between the end plate and the cover plate, and three support columns are arranged at equal angles in the circumferential direction, and the two ends of the support column are respectively connected to the edges of the end plate and the cover plate; a metal ball is placed between two adjacent support columns; a first connecting hole is opened in the center of the end plate, and a second connecting hole is opened in the center of the cover plate, and the first connecting hole and the second connecting hole are concentrically arranged; the locking needle can pass through the first connecting hole and the second connecting hole, and the metal ball is located outside the circumference of the locking needle, there is friction between the metal ball and the locking needle, and the friction is greater than the gravity of the battery box.

[0013] Preferably, a third mounting ring is fixed to a side of the second conical plate close to the limiting disk, the third mounting ring is located outside the first mounting ring, and an end of the third mounting ring abuts against an end of the limiting sleeve.

[0014] Preferably, it includes a charging platform, which includes an electromagnet at the bottom, and a support seat is fixedly installed on the upper side of the electromagnet; the support seat includes a first support sleeve, and a support disk is fixed on one end of the first support sleeve close to the electromagnet, and the support disk is truncated; a second annular electrode plate is arranged on the inner side of the support disk, and the second annular electrode plate is conical in shape, and a copper pole C is fixedly installed on the second annular electrode plate; an annular copper pole D is arranged on the lower side of the second conical plate, and the annular copper pole D is connected to the battery; the second mounting ring and the metal ball are ferromagnetic materials; when the electromagnet attracts the second mounting ring and the metal ball, the second conical plate and the second annular electrode plate fit together, and the copper pole C and the annular copper pole D are in contact.

[0015] Preferably, one end of the first support sleeve away from the support plate is threadedly connected to the second support sleeve, and one end of the second support sleeve away from the first support sleeve is fixedly mounted with an auxiliary landing plate, and the auxiliary landing plate is conical.

[0016] Preferably, the height of the auxiliary landing plate is greater than the height of the mounting plate.

[0017] (III) Beneficial effects

[0018] The utility model provides a detachable battery device for unmanned aerial vehicles. By setting a connecting mechanism, a battery box and a charging platform, and utilizing an electromagnet and a metal lock, the battery can be disassembled and connected, thereby solving the problems of difficult alignment, long time consumption and low efficiency during replacement of unmanned aerial vehicle batteries in the prior art, improving the use efficiency of the unmanned aerial vehicle, and providing a new connection method for unmanned aerial vehicles equipped with replaceable equipment modules.

[0019] The utility model uses conical structures in many places, such as the first annular electrode plate A suspended on the locking pin, the first annular electrode plate B and the second conical plate on the upper and bottom parts of the battery box; the auxiliary landing plate of the charging platform and other structures. The UAV only needs to move to the vicinity of the target area, and when landing, it can slide along the conical slope to the center for subsequent operations, which greatly reduces the requirements for the landing accuracy of the UAV and solves the problem of difficult alignment.

[0020] The annular copper poles A and B of the utility model are different from the prior art in which the battery contacts are distributed at one or both ends of the battery box, which ensures the rotational symmetry when the battery and the drone, and the battery and the platform are docked. Therefore, the drone has multiple direction options when landing, which also reduces the accuracy requirements for the drone's landing.

[0021] The utility model can realize the plugging and unplugging of the battery box only by controlling the on and off of the electromagnet, thereby removing the exhausted battery and installing the fully charged battery, has a simple mechanical structure and saves time. BRIEF DESCRIPTION OF THE DRAWINGS

[0022] Figure 1 This is a schematic diagram of the structure of a detachable battery device for a drone;

[0023] Figure 2 A cross-sectional view of a detachable battery device for a drone;

[0024] Figure 3 A schematic diagram of a protruding connection mechanism in a detachable battery device for a drone;

[0025] Figure 4 A schematic diagram of the positional relationship between a protruding support column and a metal ball in a detachable battery device for a drone;

[0026] Figure 5 A schematic diagram of the layout of the protruding second copper electrode in a detachable battery device for a drone;

[0027] Figure 6 A schematic diagram showing a protruding charging platform in a detachable battery device for a drone.

[0028] Markings in the accompanying drawings:

[0029] 100, connecting mechanism; 110, mounting plate; 120, locking pin; 130, first annular electrode plate A; 140, annular copper pole A; 150, first spring; 200, battery box; 210, first annular electrode plate B; 211, first conical plate; 2111, mounting hole; 212, first copper pole B; 213, second copper pole B; 214, limiting ring; 220, guide sleeve; 230, limiting plate; 240, metal lock; 241, limiting sleeve; 242, first mounting ring; 243, second mounting ring; 244, cover plate; 2441 , second connecting hole; 245, second spring; 246, end plate; 2461, first connecting hole; 247, support column; 248, metal ball; 249, third mounting ring; 250, first shell; 260, battery compartment; 270, second shell; 280, second conical plate; 300, charging platform; 310, electromagnet; 320, support seat; 321, first support sleeve; 322, support disk; 323, second annular electrode plate; 324, copper pole C; 325, annular copper pole D; 330, second support sleeve; 340, auxiliary landing disk. DETAILED DESCRIPTION

[0030] The following will be combined with the drawings in the embodiments of the utility model to clearly and completely describe the technical solutions in the embodiments of the utility model. Obviously, the described embodiments are only part of the embodiments of the utility model, not all of the embodiments. Based on the embodiments in the utility model, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the utility model.

[0031] Example

[0032] The utility model provides a detachable battery device for a drone, see Figure 1-Figure 6 , including a connecting mechanism 100 fixedly installed with the drone body and a battery box 200 detachably installed with the connecting mechanism 100; during use, the battery box 200 can be easily disassembled and assembled.

[0033] The connection mechanism 100 includes a mounting plate 110 fixedly mounted on the drone body, a locking pin 120 is fixedly arranged on a side of the mounting plate 110 away from the drone body, and a first annular electrode plate A130 is arranged on the locking pin 120.

[0034] The battery box 200 includes a first annular electrode plate B210 , and a guide sleeve 220 is fixedly installed on one side of the first annular electrode plate B210 . The inner side of the guide sleeve 220 is hollow and is used to limit the locking pin 120 .

[0035] A limit plate 230 is fixed to the outer side of the end of the guide sleeve 220 away from the first annular electrode plate B210, and a metal lock 240 is provided on the side of the limit plate 230 away from the first annular electrode plate B210; the lock pin 120 can pass through the guide sleeve 220 and lock with the metal lock 240. When the metal lock 240 locks the lock pin 120, the battery in the battery box 200 supplies power to the drone and can move with the drone.

[0036] A first housing 250 is threadedly connected to a side of the first annular electrode plate B210 close to the guide sleeve 220; a battery compartment 260 is formed inside the first housing 250 and between the first annular electrode plate B210 and the limiting plate 230. A battery is arranged in the battery compartment 260.

[0037] The first annular electrode plate A130 is conical in shape, and two annular copper electrodes A140 are fixedly mounted on a side of the first annular electrode plate A130 close to the first annular electrode plate B210.

[0038] The first annular electrode plate B210 includes a first conical plate 211 in the shape of a cone, and the first conical plate 211 is provided with penetrating mounting holes 2111 spaced apart in the circumferential direction. A plurality of copper poles B are arranged at the mounting holes 2111, and the copper poles B include a first copper pole B212 and a second copper pole B213. The first copper pole B212 and the second copper pole B213 are respectively provided in plurality and are respectively distributed in a ring shape.

[0039] The two annular copper electrodes A140 are in contact with the first copper electrode B212 and the second copper electrode B213 respectively; the first copper electrode B212 and the second copper electrode B213 are connected to the positive electrode and the negative electrode of the battery respectively on one side close to the battery compartment 260.

[0040] A limiting ring 214 is integrally formed on the outer side of the first conical plate 211 , and the limiting ring 214 is threadedly connected to the first housing 250 .

[0041] The first annular electrode plate A130 is slidably sleeved on the locking pin 120; a first spring 150 is fixedly connected between the mounting plate 110 and the first annular electrode plate A130. Through the first spring 150, when the first annular electrode plate A130 and the first annular electrode plate B210 are in contact, the first spring 150 can provide a certain elastic force thereto, thereby enabling the annular copper electrode A140 and the copper electrode B to be in better contact, thereby ensuring the stability of the connection.

[0042] One end of the first shell 250 away from the first annular electrode plate B210 is threadedly connected to the second shell 270 , and one end of the second shell 270 away from the first shell 250 is integrally formed with a second conical plate 280 ; the metal lock 240 is installed inside the second shell 270 .

[0043] The metal lock buckle 240 includes a limiting sleeve 241 fixed on the limiting plate 230; the limiting sleeve 241 and the guide sleeve 220 are coaxially arranged; the limiting sleeve 241 has a smaller diameter at one end close to the limiting plate 230 and a larger diameter at one end away from the limiting plate 230.

[0044] A first mounting ring 242 is fixedly disposed on one side of the second conical plate 280 close to the limiting disk 230 , and the first mounting ring 242 and the limiting sleeve 241 are coaxially disposed.

[0045] A second mounting ring 243 is movably disposed inside the limiting sleeve 241, and a cover plate 244 is integrally formed at one end of the second mounting ring 243 away from the first mounting ring 242. A second spring 245 is fixedly connected between the first mounting ring 242 and the second mounting ring 243, and the second spring 245 is a compression spring. Under the action of the compression spring, the second mounting ring 243 moves toward the end close to the limiting plate 230.

[0046] An end plate 246 is provided on one side of the cover plate 244 close to the limiting plate 230. The end plate 246 is parallel to the cover plate 244, and the area of ​​the end plate 246 is smaller than that of the cover plate 244. A support column 247 is provided between the end plate 246 and the cover plate 244. Three support columns 247 are provided at equal angles along the circumferential direction, and the two ends of the support column 247 are respectively connected to the edge of the end plate 246 and the cover plate 244. A metal ball 248 is placed between two adjacent support columns 247. Among them, a limiting sleeve 241 is provided on the outside to limit the metal ball 248, so that the three metal balls 248 will not fall out from between the two support columns 247.

[0047] A first connecting hole 2461 is provided at the center of the end plate 246, and a second connecting hole 2441 is provided at the center of the cover plate 244. The first connecting hole 2461 and the second connecting hole 2441 are arranged concentrically; the locking pin 120 can pass through the first connecting hole 2461 and the second connecting hole 2441, and the metal ball 248 is located outside the circumference of the locking pin 120. There is friction between the metal ball 248 and the locking pin 120, and the friction is greater than the gravity of the battery box 200. When the second mounting ring 243 moves upward under the action of the second spring 245, the distance between the three metal balls 248 will gradually decrease, and then the metal balls 248 and the locking pin 120 will press against each other, and the friction between the two will gradually increase until they press against each other. Without the help of external force, the battery box 200 will not be separated from the locking pin 120.

[0048] A third mounting ring 249 is fixed to one side of the second conical plate 280 close to the limiting plate 230 . The third mounting ring 249 is located outside the first mounting ring 242 , and an end of the third mounting ring 249 abuts against an end of the limiting sleeve 241 .

[0049] Specifically, the detachable battery device of the drone further includes a charging platform 300 , and the charging platform 300 includes an electromagnet 310 at the bottom, and a support base 320 is fixedly installed on the upper side of the electromagnet 310 .

[0050] The support seat 320 includes a first support sleeve 321, and a support disk 322 is fixed at one end of the first support sleeve 321 close to the electromagnet 310, and the support disk 322 is in the shape of a truncated cone; a second annular electrode plate 323 is arranged on the inner side of the support disk 322, and the second annular electrode plate 323 is in the shape of a cone, and a copper pole C324 is fixedly installed on the second annular electrode plate 323; an annular copper pole D325 is arranged on the lower side of the second conical plate 280, and the annular copper pole D325 is connected to the battery. Specifically, the connection method can be through the copper pole B.

[0051] The second mounting ring 243 and the metal ball 248 are made of ferromagnetic materials. When the electromagnet 310 attracts the second mounting ring 243 and the metal ball 248, the second conical plate 280 and the second annular electrode plate 323 fit together, and the copper pole C324 and the annular copper pole D325 come into contact. In this process, the second mounting ring 243 and the metal ball 248 are driven to move downward. During the movement, the distance between the metal ball 248 and the locking pin 120 increases, and the friction between the two decreases, so that the locking pin 120 can be separated from the battery box 200.

[0052] Preferably, the end of the first support sleeve 321 away from the support plate 322 is threadedly connected to the second support sleeve 330, and the end of the second support sleeve 330 away from the first support sleeve 321 is fixedly mounted with an auxiliary landing plate 340, and the auxiliary landing plate 340 is conical. The height of the auxiliary landing plate 340 can be greater than the height of the mounting plate 110, and then, before charging the battery, the battery box 200 and the drone are already in a separated state.

[0053] It should be noted that when the drone is using a battery box, multiple battery boxes can be used simultaneously and installed and fixed in an array arrangement.

[0054] In the description of the present invention, it should be noted that the terms "center", "upper", "lower", "left", "right", "vertical", "horizontal", "inner", "outer", "front", "back" and the like indicate positions or positional relationships based on the positions or positional relationships shown in the accompanying drawings, and are only for the convenience of describing the present invention and simplifying the description, rather than indicating or implying that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation, and therefore cannot be understood as limiting the present invention. In addition, the terms "first", "second", and "third" are used for descriptive purposes only, and cannot be understood as indicating or implying relative importance.

[0055] In the description of the present utility model, it should be noted that, unless otherwise clearly specified and limited, the terms "installed", "connected", and "connected" should be understood in a broad sense. For example, it can be a fixed connection, a detachable connection, or an integral connection, a mechanical connection, an electrical connection, a direct connection, or an indirect connection through an intermediate medium, or the internal connection of two components. For ordinary technicians in this field, the specific meanings of the above terms in the present utility model can be understood according to specific circumstances. In the absence of conflict, the embodiments of the present utility model and the features in the embodiments can be combined with each other.

[0056] The above-mentioned embodiments only express the implementation methods of the utility model, and the descriptions thereof are relatively specific and detailed, but they cannot be understood as limiting the scope of the patent of the utility model. It should be pointed out that, for ordinary technicians in this field, several modifications and improvements can be made without departing from the concept of the utility model, and these all belong to the protection scope of the utility model. Therefore, the protection scope of the utility model patent shall be based on the attached claims.

Claims

1. A detachable battery device for an unmanned aerial vehicle, characterized in that: It comprises a connection mechanism (100) fixedly mounted on a drone fuselage and a battery box (200) detachably mounted on the connection mechanism (100); The connection mechanism (100) comprises a mounting plate (110) fixedly mounted on the drone fuselage, a locking pin (120) being fixedly arranged on a side of the mounting plate (110) away from the drone fuselage, and a first annular electrode plate A (130) being arranged on the locking pin (120); The battery box (200) comprises a first annular electrode plate B (210), a guide sleeve (220) is fixedly mounted on one side of the first annular electrode plate B (210), a limit plate (230) is fixedly disposed on the outer side of one end of the guide sleeve (220) away from the first annular electrode plate B (210), and a metal lock (240) is disposed on the side of the limit plate (230) away from the first annular electrode plate B (210); the lock pin (120) can pass through the guide sleeve (220) and be locked with the metal lock (240); A first outer shell (250) is threadedly connected to a side surface of the first annular electrode plate B (210) close to the guide sleeve (220); a battery compartment (260) is formed inside the first outer shell (250) and between the first annular electrode plate B (210) and the limiting plate (230).

2. The detachable battery device for a drone according to claim 1, characterized in that: The first annular electrode plate A (130) is conical in shape, and two annular copper electrodes A (140) are fixedly mounted on a side of the first annular electrode plate A (130) close to the first annular electrode plate B (210); The first annular electrode plate B (210) comprises a first conical plate (211) in a conical shape, the first conical plate (211) being provided with through mounting holes (2111) spaced apart in a circumferential direction, a plurality of copper poles B being arranged at the mounting holes (2111), the copper poles B comprising a first copper pole B (212) and a second copper pole B (213), a plurality of the first copper poles B (212) and the second copper poles B (213) being respectively arranged and respectively distributed in a ring shape; The two annular copper electrodes A (140) are in contact with the first copper electrode B (212) and the second copper electrode B (213) respectively; the first copper electrode B (212) and the second copper electrode B (213) are connected to the positive electrode and the negative electrode of the battery respectively on one side close to the battery compartment (260).

3. The detachable battery device for an unmanned aerial vehicle according to claim 2, characterized in that: A limiting ring (214) is integrally formed on the outer side of the first conical plate (211), and the limiting ring (214) is threadedly connected to the first outer shell (250).

4. The detachable battery device for a drone according to claim 1, characterized in that: The first annular electrode plate A (130) is slidably sleeved on the locking pin (120); and a first spring (150) is fixedly connected between the mounting plate (110) and the first annular electrode plate A (130).

5. The detachable battery device for a drone according to claim 1, characterized in that: An end of the first shell (250) away from the first annular electrode plate B (210) is threadedly connected to a second shell (270), and an end of the second shell (270) away from the first shell (250) is integrally formed with a second conical plate (280); the metal lock buckle (240) is installed inside the second shell (270).

6. The detachable battery device for an unmanned aerial vehicle according to claim 5, characterized in that: The metal lock buckle (240) comprises a limiting sleeve (241) fixed on the limiting plate (230); The limiting sleeve (241) and the guide sleeve (220) are coaxially arranged; the limiting sleeve (241) has a smaller diameter at one end close to the limiting plate (230) and a larger diameter at one end away from the limiting plate (230); A first mounting ring (242) is fixedly disposed on one side of the second conical plate (280) close to the limiting plate (230), and the first mounting ring (242) and the limiting sleeve (241) are coaxially disposed; A second mounting ring (243) is movably provided inside the limiting sleeve (241); a cover plate (244) is integrally formed at one end of the second mounting ring (243) away from the first mounting ring (242); a second spring (245) is fixedly connected between the first mounting ring (242) and the second mounting ring (243); the second spring (245) is a compression spring; An end plate (246) is provided on one side of the cover plate (244) close to the limiting plate (230); the end plate (246) is parallel to the cover plate (244), and the area of ​​the end plate (246) is smaller than the area of ​​the cover plate (244); A support column (247) is provided between the end plate (246) and the cover plate (244), three support columns (247) are provided at equal angle intervals along the circumferential direction, and two ends of the support column (247) are respectively connected to the edges of the end plate (246) and the cover plate (244); A metal ball (248) is placed between two adjacent support columns (247); a first communication hole (2461) is opened at the center of the end plate (246), and a second communication hole (2441) is opened at the center of the cover plate (244); the first communication hole (2461) and the second communication hole (2441) are concentrically arranged; The locking pin (120) is capable of passing through the first connecting hole (2461) and the second connecting hole (2441), and the metal ball (248) is located outside the circumference of the locking pin (120), and there is friction between the metal ball (248) and the locking pin (120), and the friction is greater than the gravity of the battery box (200).

7. The detachable battery device for a drone according to claim 6, characterized in that: A third mounting ring (249) is fixed to a side of the second conical plate (280) close to the limiting plate (230); the third mounting ring (249) is located outside the first mounting ring (242), and an end of the third mounting ring (249) abuts against an end of the limiting sleeve (241).

8. The detachable battery device for an unmanned aerial vehicle according to claim 6, characterized in that: The drone detachable battery device also includes a charging platform (300); The charging platform (300) comprises an electromagnet (310) at the bottom, and a support seat (320) is fixedly mounted on the upper side of the electromagnet (310); The support seat (320) comprises a first support sleeve (321), a support plate (322) being fixed to one end of the first support sleeve (321) close to the electromagnet (310), and the support plate (322) is in the shape of a truncated cone; A second annular electrode plate (323) is arranged inside the support plate (322), the second annular electrode plate (323) is conical in shape, and a copper electrode C (324) is fixedly mounted on the second annular electrode plate (323); an annular copper electrode D (325) is arranged on the lower side of the second conical plate (280), and the annular copper electrode D (325) is connected to a battery; The second mounting ring (243) and the metal ball (248) are made of ferromagnetic materials; when the electromagnet (310) attracts the second mounting ring (243) and the metal ball (248), the second conical plate (280) and the second annular electrode plate (323) are in contact, and the copper pole C (324) and the annular copper pole D (325) are in contact.

9. The detachable battery device for a drone according to claim 8, characterized in that: One end of the first support sleeve (321) away from the support plate (322) is threadedly connected to the second support sleeve (330), and one end of the second support sleeve (330) away from the first support sleeve (321) is fixedly mounted with an auxiliary landing plate (340), and the auxiliary landing plate (340) is conical.

10. The detachable battery device for a drone according to claim 9, characterized in that: The height of the auxiliary landing plate (340) is greater than the height of the mounting plate (110).

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