A drone battery pack protection module

Abstract

The utility model belongs to the field of unmanned plane, disclose a kind of unmanned plane battery package protection module, including bottom plate, bottom plate bottom rotatably connected with elbow pipe, elbow pipe other end rotatably connected with flat plate, the included angle between flat plate and bottom plate is acute angle, locking unit is equipped between elbow pipe and bottom plate, when the extrusion force between elbow pipe and bottom plate reaches set value, locking unit can fix elbow pipe with bottom plate;Flat plate bottom hinged with battery compartment, the geometric center of battery compartment and the rotation axis of flat plate do not coincide when battery compartment is fixed with flat plate, multiple cooling fins are fixed outside battery compartment, multiple cooling fins are mutually parallel, and buckle lock is equipped between battery compartment and flat plate;The utility model has realized the probability of occurrence of reducing unmanned plane battery package spontaneous combustion due to high temperature or extrusion.

Description

Technical Field

[0001] This utility model belongs to the field of unmanned aerial vehicle (UAV) technology, and in particular relates to a UAV battery pack protection module. Background Technology

[0002] In recent years, drone technology has developed rapidly, and it has been widely and deeply applied in many fields such as aerial photography, forestry patrol, and high-altitude reconnaissance. However, against the backdrop of frequent lithium battery safety accidents, more and more people are paying attention to the battery safety of drones flying at high altitudes, which is a safety hazard that urgently needs to be addressed. Although current drones have temperature control systems during flight, which will alarm and stop flying when the temperature is high in summer or the battery overheats, this is a passive protection. Moreover, for aerobatic flying drones, the flight speed is higher, they often pass through obstacles, and there are situations where they need to stop suddenly, turn sharply, or even collide during flight. When these actions occur, the lithium battery and the battery compartment are squeezed together, which can easily lead to spontaneous combustion. Therefore, how to actively reduce the probability of spontaneous combustion of drone battery packs due to overheating or compression during flight is still a process worth exploring. Summary of the Invention

[0003] The purpose of this invention is to propose a drone battery pack protection module to reduce the probability of spontaneous combustion of drone battery packs due to high temperature or compression.

[0004] To achieve the above objectives, the present invention adopts the following technical solution:

[0005] A drone battery pack protection module includes a base plate, a bent tube rotatably connected to the bottom of the base plate, and a flat plate rotatably connected to the other end of the bent tube. The angle between the flat plate and the base plate is an acute angle. A locking unit is provided between the bent tube and the base plate. When the compressive force between the bent tube and the base plate reaches a set value, the locking unit can fix the bent tube to the base plate. A battery compartment is hinged to the bottom of the flat plate. When the battery compartment is fixed to the flat plate, the geometric center of the battery compartment does not coincide with the rotation axis of the flat plate. Multiple heat sinks are fixed to the outside of the battery compartment. The multiple heat sinks are parallel to each other, and a latch lock is provided between the battery compartment and the flat plate.

[0006] As a further description of the above technical solution:

[0007] The bend has a disc at each end, which is fixed to the bend by screws. Two rings are fitted on the bend between the two discs. The cross-sectional shape of the two rings is Z-shaped. The two rings are fixed to the base plate or plate by screws respectively, so as to realize the rotational connection between the bend and the base plate and the bend and the plate. End face bearings are provided between the rings and the discs, thereby reducing the resistance when the base plate or plate rotates relative to the bend.

[0008] As a further description of the above technical solution:

[0009] The locking unit includes an internal gear ring, which is coaxially fixed to a ring near the base plate. A gear is coaxially fixed to a bent tube near the base plate. The gear is coaxial with the internal gear ring, and the radius of the gear's tooth tip circle is smaller than that of the internal gear ring. Multiple spring pieces are fixed to the inner side of the ring near the base plate. The spring pieces contact the outer wall of the disc. The multiple spring pieces enable the bent tube near the base plate to be coaxial with the ring near the base plate. When the bent tube is subjected to excessive force in a certain direction, the bent tube squeezes the spring pieces, causing the gear to mesh with the internal gear ring, thereby preventing the bent tube from rotating relative to the base plate.

[0010] As a further description of the above technical solution:

[0011] The battery compartment is a square shell with an open top. A rectangular plate is welded to the top of the battery compartment, and a through groove is opened in the middle of the rectangular plate, which is connected to the battery compartment cavity. The flat plate is hinged to the rectangular plate, and the heat sink is fixed between the battery compartment and the rectangular plate. The rotating part of the latch lock is fixed to the side wall of multiple heat sinks, and the fixing part of the latch lock is fixed to the side wall of the flat plate. When the latch lock is opened, the rectangular plate rotates around the hinge axis, and the battery compartment cavity is opened for easy battery installation. When the rectangular plate and the flat plate are in contact, the latch lock is closed, which can fix the battery between the battery compartment and the flat plate.

[0012] As a further description of the above technical solution:

[0013] An insulating tube is fixed inside the bent tube, and a collector ring is fixed at each end of the insulating tube. The two collector rings are electrically connected inside the insulating tube by a wire. A through hole is opened in the middle of the base plate, and the through hole is coaxial with the top of the bent tube. The collector ring at the top of the insulating tube extends to the top of the base plate through the through hole, and multiple carbon brushes are fixed around the circumference of the through hole. Multiple carbon brushes are evenly distributed around the rotation axis of the plate on the top of the plate. The carbon brushes on the base plate and the plate are connected to plugs by wires. The plugs on the base plate are located above the base plate, and the plugs on the plate are located below the plate. This allows the battery pack to continuously power the drone when the battery compartment rotates relative to the base plate.

[0014] In summary, due to the adoption of the above technical solution, the beneficial effects of this utility model are:

[0015] (1) When the battery compartment and the plate are fixed, the geometric center of the battery compartment and the rotation axis of the plate do not coincide, so that the battery pack is always located behind the rotation center of the plate when the UAV is flying. Therefore, when a sudden stop, sharp turn or collision occurs, the battery pack and the battery compartment can rotate forward around the rotation center of the plate. When rotating forward, the center of gravity of the battery pack and the battery compartment moves upward because there is an acute angle between the plate and the base plate. This accelerates the consumption of the kinetic energy of the battery pack, reduces the squeezing and collision between the battery pack and the battery compartment, and improves the safety factor of the battery pack when the UAV's flight state changes rapidly.

[0016] (2) The heat sink of this utility model can not only improve the heat dissipation effect of the battery pack during normal flight, but also rotate from the minimum wind resistance state parallel to the wind direction to the wind resistance increase state when the UAV stops suddenly, turns sharply or collides. This increases the air resistance of the UAV in the original flight direction, which helps to reduce the emergency stop distance and the turning radius. It can not only improve the emergency response speed, but also improve the aerobatic flight performance.

[0017] (3) When the battery compartment is about to collide, the heat sink of this utility model can deform and absorb energy first, avoiding deformation of the battery compartment and battery pack, and further improving the safety factor of the battery pack during the collision. Attached Figure Description

[0018] Figure 1 This is a perspective view of the present invention;

[0019] Figure 2 This is the front view of the present invention;

[0020] Figure 3 This is a front sectional view of the present invention;

[0021] Figure 4 This is a schematic diagram of the structure of the bent tube, gear, and slip ring of this utility model;

[0022] Figure 5 This is a schematic diagram showing the installation of the spring and internal gear ring of this utility model;

[0023] Figure 6 This utility model Figure 3 Enlarged view of point A in the middle.

[0024] Legend: 1. Base plate; 2. Bend; 3. Flat plate; 4. Battery compartment; 5. Heat sink; 6. Hook and loop lock; 7. Disc; 8. Ring; 9. Internal gear ring; 10. Gear; 11. Spring; 12. Rectangular plate; 13. Insulating tube; 14. Slip ring; 15. Carbon brush; 16. Plug. Detailed Implementation

[0025] The technical solutions of the present utility model will be clearly and completely described below with reference to the accompanying drawings of the embodiments. Obviously, the described embodiments are only some embodiments of the present utility model, and not all embodiments. Based on the embodiments of the present utility model, all other embodiments obtained by those skilled in the art without creative effort are within the protection scope of the present utility model.

[0026] Please see Figure 1-6 This utility model provides a technical solution for a drone battery pack protection module:

[0027] A drone battery pack protection module includes a base plate 1, a flat plate 3 below the base plate 1, and an acute angle between the flat plate 3 and the base plate 1. A bent tube 2 is positioned between the base plate 1 and the flat plate 3, with a disc 7 at each end of the bent tube 2. The discs 7 are fixedly connected to the bent tube 2 by screws. Two rings 8 are fitted onto the bent tube 2 between the two discs 7. Both rings 8 have a Z-shaped cross-section and are fixed to the base plate 1 or the flat plate 3 by screws, respectively. This allows for rotatable connections between the bent tube 2 and the base plate 1, and between the bent tube 2 and the flat plate 3. Furthermore, end bearings are provided between the rings 8 and the discs 7, thereby reducing the resistance when the base plate 1 or the flat plate 3 rotates relative to the bent tube 2.

[0028] A locking unit is provided between the bend 2 and the base plate 1. The locking unit includes an internal gear ring 9, which is coaxially fixed with a ring 8 near the base plate 1. A gear 10 is coaxially fixed on the bend 2 near the base plate 1. The gear 10 is coaxial with the internal gear ring 9, and the tooth tip circle radius of the gear 10 is smaller than that of the internal gear ring 9. The end face bearing near the base plate 1 is located between the internal gear ring 9 and the disk 7 above the bend 2. Multiple spring pieces 11 are fixed on the inner side of the ring 8 near the base plate 1. The spring pieces 11 are in contact with the outer wall of the disk 7. The multiple spring pieces 11 can make the bend 2 near the base plate 1 coaxial with the ring 8 near the base plate 1. When the bend 2 is subjected to excessive force in a certain direction, the bend 2 squeezes the spring pieces 11, causing the gear 10 to mesh with the internal gear ring 9, thereby preventing the bend 2 from rotating relative to the base plate 1.

[0029] A battery compartment 4 is hinged to the bottom of the plate 3. When the battery compartment 4 is fixed to the plate 3, its geometric center does not coincide with the rotation axis of the plate 3. The battery compartment 4 is a square shell with an open top. A rectangular plate 12 is welded to the top of the battery compartment 4. A through slot is opened in the middle of the rectangular plate 12, which communicates with the cavity of the battery compartment 4. The plate 3 is hinged to the rectangular plate 12. Heat sinks 5 are fixed between the battery compartment 4 and the rectangular plate 12. A latch lock 6 is provided between the battery compartment 4 and the plate 3. The rotating part of the latch lock 6 is fixed to the side wall of multiple heat sinks 5, and the fixing part of the latch lock 6 is fixed to the side wall of the plate 3. When the latch lock 6 is opened, the rectangular plate 12 rotates around the hinge axis, opening the cavity of the battery compartment 4 for easy battery installation. When the rectangular plate 12 is in contact with the plate 3, the latch lock 6 is closed, which can fix the battery between the battery compartment 4 and the plate 3.

[0030] Multiple heat sinks 5 are fixed to the outside of the battery compartment 4, and the multiple heat sinks 5 are parallel to each other; an insulating tube 13 is fixed inside the bent tube 2, and a collector ring 14 is fixed to each end of the insulating tube 13. The two collector rings 14 are electrically connected inside the insulating tube 13 by wires. A through hole is opened in the middle of the base plate 1. The through hole is coaxial with the top of the bent tube 2. The collector ring 14 at the top of the insulating tube 13 extends to the top of the base plate 1 through the through hole, and multiple carbon brushes 15 are fixed around the circumference of the through hole. Multiple carbon brushes 15 are evenly distributed around the rotation axis of the plate 3 on the top of the plate 3. The carbon brushes 15 on the base plate 1 and the plate 3 are connected to plugs 16 by wires. The plugs 16 on the base plate 1 are located above the base plate 1, and the plugs 16 on the plate 3 are located below the plate 3. This facilitates the battery pack to continuously power the drone when the battery compartment 4 rotates relative to the base plate 1.

[0031] Working principle:

[0032] When using this device, the base plate 1 is fixed to the bottom shell of the drone with bolts, and the plug 16 on the base plate 1 is connected to the main circuit on the drone. Then, the latch lock 6 is opened, the battery pack is placed into the battery compartment 4, and the power cord of the battery pack is connected to the plug 16 at the bottom of the flat plate 3. Finally, the rectangular plate 12 and the flat plate 3 are merged, and the latch lock 6 is closed.

[0033] When the drone takes off, because the geometric center of the battery compartment 4 does not coincide with the rotation axis of the plate 3 when the battery compartment 4 is fixed to the plate 3, and there is an acute angle between the plate 3 and the base plate 1, under the gravity of the battery pack, the plate 3, the rectangular plate 12, and the battery compartment 4 will all rotate around the axis at the bottom of the curved tube 2. During rotation, the center of gravity of the battery pack shifts downward until the distance between the center of gravity of the battery pack and the base plate 1 is at its maximum. Figure 3 The state shown;

[0034] During normal flight, the heat sink 5 is parallel to the relative wind direction blowing towards the drone, which helps to increase the airflow speed between the heat sinks 5 and enhance the heat dissipation effect. When the drone turns normally, although the battery pack drives the bent tube 2 to squeeze the spring 11 through the battery compartment 4 and the plate 3, the deformation of the spring 11 is less than the difference between the tooth tip circle radius of the gear 10 and the tooth tip circle radius of the internal gear ring 9. Therefore, the bent tube 2 can still rotate relative to the base plate 1. The heat sink 5 drives the plate 3 and the bent tube 2 to rotate in the direction of reduced wind resistance under the wind force until the heat sink 5 returns to the state of being parallel to the relative wind direction.

[0035] When the drone makes a sudden stop, a sharp turn, or collides, the base plate 1 is fixed to the drone, so its motion is the same as the drone's. The flat plate 3 and battery compartment 4 are fixed, and their motion is changed by the force transmitted by the spring 11 and the bent tube 2. Therefore, when the drone's motion changes drastically, the bent tube 2 will squeeze the spring 11 and cause greater deformation. The gear 10 meshes with the internal gear ring 9, preventing the bent tube 2 from rotating relative to the base plate 1. Therefore, the battery compartment 4 drives the flat plate 3 to rotate around the bottom axis of the bent tube 2 under inertia. Since there is an acute angle between the flat plate 3 and the base plate 1, the center of gravity of the battery pack, the battery compartment 4, and the flat plate 3 all rise when the battery compartment 4 rotates. Therefore, the acute angle design between the base plate 1 and the flat plate 3 can convert the kinetic energy of the battery compartment 4 into gravitational potential energy, thereby realizing kinetic energy consumption, reducing the squeezing force between the battery pack and the battery compartment 4, and preventing spontaneous combustion caused by internal penetration of the battery pack.

[0036] At the same time, when the flat plate 3 rotates, the heat sink 5 also rotates, that is, the heat sink 5 rotates from a state parallel to the wind direction to a state perpendicular to the wind direction. Therefore, the drag of the drone in its original flight direction increases. Combined with the two effects of kinetic energy consumption and increased wind resistance, it is beneficial to shorten the emergency stop distance and reduce the turning radius.

[0037] The above description is only a preferred embodiment of the present utility model, but the protection scope of the present utility model is not limited thereto. Those skilled in the art can make equivalent substitutions or changes based on the technical solution and inventive concept of the present utility model within the scope of the technology disclosed in the present utility model, and all such substitutions or changes should be included within the protection scope of the present utility model.

Claims

1. A drone battery pack protection module, characterized in that... Includes a base plate (1), a bent tube (2) is rotatably connected to the bottom of the base plate (1), and a flat plate (3) is rotatably connected to the other end of the bent tube (2). The angle between the flat plate (3) and the base plate (1) is an acute angle. A locking unit is provided between the bent tube (2) and the base plate (1). When the squeezing force between the bent tube (2) and the base plate (1) reaches a set value, the locking unit can fix the bent tube (2) and the base plate (1). A battery compartment (4) is hinged to the bottom of the flat plate (3). When the battery compartment (4) is fixed to the flat plate (3), the geometric center of the battery compartment (4) does not coincide with the rotation axis of the flat plate (3). Multiple heat sinks (5) are fixed on the outside of the battery compartment (4). The multiple heat sinks (5) are parallel to each other, and a latch lock (6) is provided between the battery compartment (4) and the flat plate (3).

2. The module according to claim 1, characterized in that, The bent pipe (2) is provided with a disc (7) at each end. The disc (7) is fixedly connected to the bent pipe (2) by screws. Two rings (8) are fitted on the bent pipe (2) between the two discs (7). The cross-sectional shape of the two rings (8) is Z-shaped. The two rings (8) are fixed to the base plate (1) or the flat plate (3) by screws respectively. And end face bearings are provided between the rings (8) and the discs (7).

3. The module according to claim 2, characterized in that, The locking unit includes an internal gear ring (9), which is coaxially fixed with a ring (8) near the base plate (1). A gear (10) is coaxially fixed on a bent tube (2) near the base plate (1). The gear (10) is coaxial with the internal gear ring (9), and the tooth tip circle radius of the gear (10) is smaller than the tooth tip circle radius of the internal gear ring (9). Multiple spring pieces (11) are fixed on the inner side of the ring (8) near the base plate (1). The spring pieces (11) are in contact with the outer wall of the disc (7). The multiple spring pieces (11) can make the bent tube (2) near the base plate (1) coaxial with the ring (8) near the base plate (1). When the bent tube (2) is subjected to excessive force in a certain direction, the bent tube (2) squeezes the spring pieces (11) so that the gear (10) meshes with the internal gear ring (9).

4. The module according to claim 1, characterized in that, The battery compartment (4) is a square shell with an open top. A rectangular plate (12) is welded and fixed to the top of the battery compartment (4). A through groove is opened in the middle of the rectangular plate (12) and the through groove is connected to the cavity of the battery compartment (4). The flat plate (3) is hinged to the rectangular plate (12). The heat sink (5) is fixed between the battery compartment (4) and the rectangular plate (12). The rotating part of the latch lock (6) is fixed to the side wall of the multiple heat sinks (5), and the fixing part of the latch lock (6) is fixed to the side wall of the flat plate (3).

5. The module according to claim 1, characterized in that, An insulating tube (13) is fixed inside the bent tube (2). A collector ring (14) is fixed at both ends of the insulating tube (13). The two collector rings (14) are electrically connected inside the insulating tube (13) by a wire. A through hole is opened in the middle of the base plate (1). The through hole is coaxial with the top of the bent tube (2). The collector ring (14) at the top of the insulating tube (13) extends to the top of the base plate (1) through the through hole. Multiple carbon brushes (15) are fixed around the circumference of the through hole. Multiple carbon brushes (15) are evenly distributed around the rotation axis of the plate (3) on the top of the plate (3). The carbon brushes (15) on the base plate (1) and the plate (3) are connected to plugs (16) by wires.

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