Battery pack device for unmanned aerial vehicle

Abstract

The invention relates to the technical field of battery packs, in particular to a battery pack device for an unmanned aerial vehicle, the battery pack device comprises a structural frame body, and a second battery unit and a first battery unit which are arranged in the structural frame body, the structural frame body is provided with a power supply sliding plate and a movable insertion strip, and the movable insertion strip is used for driving the power supply sliding plate to move; when the battery pack device supplies power to the unmanned aerial vehicle, the power supply sliding plate is firstly conducted and contacted with the first battery unit, so that the first battery unit discharges outwards; the battery pack device for the unmanned aerial vehicle can automatically switch to the second battery unit to supply power and abandon the first battery unit when the first battery unit in the battery pack is used up under the special working condition of needing the ultimate endurance, so that the weight of the battery pack is greatly reduced, and the ultimate endurance of the unmanned aerial vehicle can be increased.

Description

Technical Field

[0001] The present invention relates to the technical field of battery packs, and in particular to a battery pack device for an unmanned aerial vehicle. Background Art

[0002] A drone is a modern remote-controlled or automatic flying device that is powered by a battery pack. The endurance of a drone is an important performance indicator of a drone. Increasing the battery pack can increase the energy storage capacity, thereby increasing the endurance of the drone. However, the battery pack is also one of the heaviest components of a drone, and its greater weight has a significant impact on the endurance of the drone. In traditional technology, the endurance of a drone is basically matched and fixed to the capacity of the battery pack. In emergency conditions, the drone's ultimate endurance cannot be increased at any time, and the endurance can only be increased by replacing the battery pack, which is insufficiently functional. Summary of the invention

[0003] The object of the present invention is to provide a battery pack device for an unmanned aerial vehicle to solve the problems raised in the above-mentioned background technology.

[0004] To achieve the above-mentioned object, the present invention provides the following technical solution: a battery pack device for a drone, comprising a structural frame, and a second battery unit and a first battery unit arranged inside the structural frame, wherein a power supply slide plate and a movable insert are arranged on the structural frame, and the movable insert is used to drive the power supply slide plate to move; When the battery pack device supplies power to the drone, the power supply slide first contacts the first battery unit, so that the first battery unit discharges externally; when the power in the first battery unit is lower than the set value, the power supply slide moves toward the second battery unit. During the movement, the first battery unit and the second battery unit are in parallel state, so that the power supply slide contacts the second battery unit, and the second battery unit discharges externally; The structural frame is provided with a limiting component, and when the first battery unit is discharged externally, the limiting component fixes the first battery unit and the structural frame to each other; when the second battery unit is discharged externally, the limiting component causes the first battery unit to fall off from the structural frame.

[0005] The limiting component includes a accommodating eaves and a switching shaft. The accommodating eaves is fixedly arranged at the lower position of the structural frame, and the switching shaft is rotatably arranged in the accommodating eaves. A limiting slat is fixedly arranged on the switching shaft. When the limiting slat is in a horizontal state, the first battery unit can be limited and blocked.

[0006] A swing lock rod is fixedly provided at the end of the switching shaft, a matching lock groove is provided on the surface of the swing lock rod, an insert tongue portion is inserted in the matching lock groove, and the matching lock groove is limited by the insert tongue portion to prevent the matching lock groove from rotating.

[0007] A magnetic panel is fixedly arranged on the insert tongue portion, and a track support arm is fixedly arranged on the surface of the structural frame. The track support arm is limitedly inserted through the magnetic panel.

[0008] A back plate is fixedly provided at the end of the track support arm, and a force spring is provided between the back plate and the magnetic panel. The force spring applies elastic pressure to the magnetic panel so that the tongue portion has an elastic tendency to move toward the inside of the matching lock groove.

[0009] The back plate is fixedly provided with an electromagnet unit, which generates magnetic force when powered on to attract the magnetic panel to move toward the back plate, so that the inserting tongue moves out of the matching lock groove.

[0010] A suspension support frame is arranged inside the structural frame, an external connection slot is opened through the surface of the structural frame, a connecting portion is fixedly arranged on the suspension support frame, the connecting portion passes through the external connection slot and extends to the outside of the structural frame, a suspension outer plate is arranged outside the structural frame, and the connecting portion and the suspension outer plate are fixed to each other.

[0011] An auxiliary spring is arranged below the suspension outer plate, and the auxiliary spring applies an upward elastic thrust to the suspension outer plate.

[0012] A synchronization socket is provided on the surface of the second battery unit, and an electromagnetic telescope is embedded and fixed in the movable insert strip. A telescopic plug shaft is provided on the electromagnetic telescope, and the telescopic activity of the telescopic plug shaft is controlled by the electromagnetic telescope. When the second battery unit is in contact with the power supply slide board, the telescopic plug shaft corresponds to the synchronization socket, and the telescopic plug shaft is extended to be inserted into the synchronization socket.

[0013] A parachute unit is disposed between the second battery unit and the first battery unit. The parachute unit is connected to the first battery unit and is used to decelerate the first battery unit during its falling process.

[0014] A conductive vertical plate is fixedly arranged on the surface of the power supply slide plate, and the conductive vertical plate is embedded and fixed in the movable fillet, and the power supply slide plate and the movable fillet are fixed to each other through the conductive vertical plate; The power supply slide is provided with a contact spring, and the power supply slide is in conductive contact with the second battery unit or the first battery unit through the contact spring. The contact spring is provided with an anti-stuck inclination angle, and a pressure-maintaining spring is provided inside the contact spring, and the pressure-maintaining spring is used to elastically support the contact spring.

[0015] A screw shaft is inserted in the movable fillet, and the screw shaft is spirally matched with the movable fillet. The movable fillet is driven to move by the rotation of the screw shaft. A screw motor for driving the screw shaft to rotate is arranged at the end of the screw shaft.

[0016] End sliding grooves are provided at both ends of the movable fillet, and a track sliding edge is fixedly provided on the surface of the structural frame, and the end sliding grooves are slidably limitedly matched with the track sliding edge.

[0017] Compared with the prior art, the present invention has the following beneficial effects: The battery pack device for the drone of the present invention can automatically switch to the second battery unit for power supply and discard the first battery unit when the power of the first battery unit in the battery pack is exhausted under special working conditions requiring extreme endurance, thereby greatly reducing the weight of the battery pack and enabling the drone to increase its extreme endurance.

[0018] The present invention cooperates with structures such as a suspended support frame, a movable fillet and an electromagnetic retractor to control the height of the second battery unit after the first battery unit is discarded, so that the second battery unit moves downward, thereby lowering the overall center of gravity of the battery pack; and avoids the overall center of gravity of the battery pack moving upward after the first battery unit is discarded, thereby affecting the controllability of the drone. BRIEF DESCRIPTION OF THE DRAWINGS

[0019] Figure 1 It is a schematic diagram of the overall structure of the present invention.

[0020] Figure 2 for Figure 1 A magnified schematic diagram of area A in the middle.

[0021] Figure 3 It is a schematic diagram of the overall structure of the present invention from another angle.

[0022] Figure 4 for Figure 3 Enlarged schematic diagram of area B in the middle.

[0023] Figure 5 It is the front view of the overall structure of the present invention.

[0024] Figure 6 It is a side view of the overall structure of the present invention.

[0025] Figure 7 It is a three-dimensional half-section schematic diagram of the power supply slide plate of the present invention.

[0026] Figure 8 for Figure 7 Enlarged schematic diagram of area C in the middle.

[0027] Fig. 9 It is a three-dimensional half-section schematic diagram of the electromagnetic expansion device of the present invention.

[0028] Fig.10 for Fig. 9 Enlarged schematic diagram of area D in the middle.

[0029] Fig.11 It is a three-dimensional half-section schematic diagram of the connection portion of the present invention.

[0030] In the figure: 1, structural frame; 2, second battery unit; 3, first battery unit; 4, power supply slide; 5, movable insert; 101, accommodating eaves; 102, switching shaft; 103, limiting slats; 104, swing lock rod; 105, matching lock groove; 106, tongue portion; 107, magnetic panel; 108, track support arm; 109, back plate; 110, force spring; 111, electromagnet unit; 201, suspension support frame ; 202, external connecting groove; 203, connecting part; 204, suspended outer plate; 205, auxiliary spring; 206, synchronous socket; 207, electromagnetic telescope; 208, telescopic plug shaft; 301, parachute unit; 401, conductive vertical plate; 402, contact spring; 403, anti-stuck inclination angle; 404, pressure-maintaining spring; 501, screw shaft; 502, screw motor; 503, end slide groove; 504, track sliding edge. DETAILED DESCRIPTION

[0031] The following will be combined with the drawings in the embodiments of the present invention to clearly and completely describe the technical solutions in the embodiments of the present invention. Obviously, the described embodiments are only part of the embodiments of the present invention, not all of the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the present invention.

[0032] See also Figures 1 to 11 The present invention provides a technical solution: a battery pack device for an unmanned aerial vehicle, comprising a structural frame 1 and a second battery unit 2 and a first battery unit 3 arranged inside the structural frame 1, a power supply slide 4 and a movable insert 5 are arranged on the structural frame 1, and the movable insert 5 is used to drive the power supply slide 4 to move; the movable insert 5 is made of plastic and has insulating properties.

[0033] When the battery pack device is supplying power to the drone, the power supply slide 4 is firstly connected to the first battery cell 3, so that the first battery cell 3 discharges to the outside; when the power in the first battery cell 3 is lower than the set value, the power supply slide 4 moves toward the second battery cell 2. During the movement, the first battery cell 3 and the second battery cell 2 are connected in parallel, so that the power supply slide 4 is connected to the second battery cell 2, and the second battery cell 2 discharges to the outside.

[0034] A limiting component is arranged on the structural frame 1. When the first battery unit 3 discharges to the outside, the limiting component fixes the first battery unit 3 and the structural frame 1 to each other; when the second battery unit 2 discharges to the outside, the limiting component causes the first battery unit 3 to fall off from the structural frame 1. The limiting component includes a accommodating eaves 101 and a switching shaft 102. The accommodating eaves 101 is fixedly arranged at the lower position of the structural frame 1, and the switching shaft 102 is rotatably arranged in the accommodating eaves 101. A limiting slat 103 is fixedly arranged on the switching shaft 102. When the limiting slat 103 is in a horizontal state, the first battery unit 3 can be limited and blocked.

[0035] A swing lock rod 104 is fixedly provided at the end of the switching shaft 102. A matching lock slot 105 is provided on the surface of the swing lock rod 104. A tongue portion 106 is inserted into the matching lock slot 105. The tongue portion 106 limits the matching lock slot 105 to prevent the matching lock slot 105 from rotating. A magnetic panel 107 is fixedly provided on the tongue portion 106. A track arm 108 is fixedly provided on the surface of the structural frame 1. The track arm 108 is limited and inserted through the magnetic panel 107. A back plate 109 is fixedly provided at the end of the track arm 108. A force spring 110 is provided between the back plate 109 and the magnetic panel 107. The force spring 110 applies elastic pressure to the magnetic panel 107, so that the tongue portion 106 has an elastic tendency to move toward the inside of the matching lock slot 105. An electromagnet unit 111 is fixedly disposed on the back plate 109 . When the electromagnet unit 111 is energized, a magnetic force is generated to attract the magnetic panel 107 to move toward the back plate 109 , so that the tongue portion 106 moves out of the matching lock slot 105 .

[0036] A suspension support frame 201 is arranged inside the structural frame 1, an external connection slot 202 is opened through the surface of the structural frame 1, a connecting portion 203 is fixedly arranged on the suspension support frame 201, the connecting portion 203 passes through the external connection slot 202 and extends to the outside of the structural frame 1, a suspension outer plate 204 is arranged outside the structural frame 1, the connecting portion 203 and the suspension outer plate 204 are fixed to each other, an auxiliary spring 205 is arranged below the suspension outer plate 204, and the auxiliary spring 205 applies an upward elastic thrust to the suspension outer plate 204.

[0037] A synchronization socket 206 is provided on the surface of the second battery unit 2, and an electromagnetic telescope 207 is embedded and fixed in the movable insert strip 5. A telescopic plug shaft 208 is provided on the electromagnetic telescope 207. The telescopic movement of the telescopic plug shaft 208 is controlled by the electromagnetic telescope 207. The electromagnetic telescope 207 is composed of structures such as a magnet bar and a coil. When the coil is energized, a magnetic force is generated to drive the magnet bar to move axially, and then drive the axial movement of the telescopic plug shaft 208 to realize the telescopic control of the telescopic plug shaft 208. The electromagnetic telescope 207 is not described in detail here.

[0038] When the second battery unit 2 is in contact with the power supply slide plate 4, the telescopic plug shaft 208 corresponds to the synchronous plug hole 206, and the telescopic plug shaft 208 is extended to be inserted into the synchronous plug hole 206. The auxiliary spring 205, the suspension outer plate 204 and other structures cooperate to enable the suspension support frame 201 to suspend and support the second battery unit 2, thereby reducing the support pressure of the telescopic plug shaft 208, so that the telescopic plug shaft 208 can change the position height of the second battery unit 2 by applying a small force on one side.

[0039] A parachute unit 301 is provided between the second battery unit 2 and the first battery unit 3 . The parachute unit 301 is connected to the first battery unit 3 and is used to decelerate the first battery unit 3 when the first battery unit 3 falls.

[0040] A conductive vertical plate 401 is fixedly arranged on the surface of the power supply slide 4, and the conductive vertical plate 401 is embedded and fixed in the movable fillet 5. The power supply slide 4 and the movable fillet 5 are fixed to each other through the conductive vertical plate 401; a contact spring 402 is arranged on the power supply slide 4, and the power supply slide 4 is in conductive contact with the second battery unit 2 or the first battery unit 3 through the contact spring 402, and an anti-stuck inclination angle 403 is arranged on the contact spring 402, and the anti-stuck inclination angle 403 can prevent the contact spring 402 from getting stuck during the up and down movement. A pressure-maintaining spring 404 is arranged inside the contact spring 402, and the pressure-maintaining spring 404 is used to elastically support the contact spring 402. Through the arrangement of the pressure-maintaining spring 404, the elasticity of the contact spring 402 is more stable and not easy to fatigue, and the stability of the contact spring 402 and the conductive contact point is improved under long-term use. The contact spring 402, the power supply slide 4 and the conductive vertical plate 401 are all made of copper alloy in one piece.

[0041] like Figure 7 and Figure 8 As shown in , the first battery unit 3 and the second battery unit 2 are both provided with conductive contacts, and the power supply slide plate 4 contacts the conductive contacts through the contact spring 402, thereby establishing a conductive connection with the first battery unit 3 or the second battery unit 2.

[0042] A screw shaft 501 is inserted in the movable fillet 5, and the screw shaft 501 is spirally matched with the movable fillet 5. The movable fillet 5 is driven to move by the rotation of the screw shaft 501. A screw motor 502 for driving the screw shaft 501 to rotate is arranged at the end position of the screw shaft 501.

[0043] End sliding grooves 503 are provided at both ends of the movable fillet 5 , and a track sliding edge 504 is fixedly provided on the surface of the structural frame 1 , and the end sliding grooves 503 and the track sliding edge 504 are slidably limited and matched.

[0044] The battery pack device for a drone of the present invention is installed in the drone when in use, and the wires of the drone are connected to the conductive vertical plate 401 to achieve power supply.

[0045] like Figure 7 and Figure 8 As shown in , the power supply slide 4 is in conductive contact with the first battery cell 3 through the contact spring 402, and the first battery cell 3 is discharged to the outside at this time. When the power in the first battery cell 3 is exhausted, the screw motor 502 drives the screw shaft 501 to rotate, so that the movable strip 5 moves up, and the movable strip 5 drives the power supply slide 4 to move up. As the power supply slide 4 moves up, since the upper and lower widths of the power supply slide 4 are greater than the spacing between the conductive contacts of the second battery cell 2 and the first battery cell 3, the second battery cell 2 and the first battery cell 3 can be temporarily in parallel, avoiding power failure when switching from the first battery cell 3 to the second battery cell 2. When the power supply slide 4 moves into place, the power supply slide 4 is only in conductive contact with the second battery cell 2, and the discharge is performed through the second battery cell 2. At this time, the electromagnetic telescopic device 207 is controlled to drive the telescopic plug shaft 208 to extend, so that the telescopic plug shaft 208 is inserted into the synchronous socket 206, and the second battery cell 2 is synchronously limited.

[0046] When you need to increase the battery life, Figure 4 As shown in , the electromagnet unit 111 is energized so that the electromagnet unit 111 generates magnetic force, attracting the magnetic panel 107 to move toward the back plate 109, so that the tongue portion 106 moves out of the matching lock slot 105. At this time, the swing lock rod 104 is unlocked, and the swing lock rod 104, the switching shaft 102 and the limiting strip 103 can rotate. The first battery unit 3 moves downward under the action of gravity, pushing the limiting strip 103 to flip and lose the limit. At this time, the first battery unit 3 is discarded, thereby greatly reducing the weight of the battery pack, greatly reducing the load of the drone, and increasing the cruising range.

[0047] During the falling process of the first battery unit 3 , the parachute unit 301 is deployed, so that the first battery unit 3 can be slowly lowered, thereby preventing the first battery unit 3 from being damaged and reducing the falling impact force of the first battery unit 3 .

[0048] Since the first battery unit 3 is discarded, the overall center of gravity of the battery pack moves up, causing the center of gravity of the drone to move up, and the drone becomes top-heavy and less stable. In the present invention, the telescopic plug shaft 208 is inserted into the synchronization socket 206 to synchronously limit the second battery unit 2. At this time, the movable strip 5 is controlled to move downward, and the telescopic plug shaft 208 and the synchronization socket 206 can cooperate to apply downward pressure to the second battery unit 2, so that the second battery unit 2, the power supply slide 4 and the movable strip 5 are synchronously lowered, thereby lowering the overall center of gravity of the battery pack, so that the center of gravity of the drone returns to normal; when the second battery unit 2 moves downward, the suspension support frame 201 is pushed downward, and the auxiliary spring 205 is further compressed.

[0049] Although embodiments of the present invention have been shown and described, it will be appreciated by those skilled in the art that various changes, modifications, substitutions and variations may be made to the embodiments without departing from the principles and spirit of the present invention, and that the scope of the present invention is defined by the appended claims and their equivalents.

Claims

1. A battery pack device for an unmanned aerial vehicle, comprising a structural frame, and a second battery unit and a first battery unit arranged inside the structural frame, characterized in that: The structural frame is provided with a power supply slide and a movable insert, and the movable insert is used to drive the power supply slide to move; When the battery pack device supplies power to the drone, the power supply slide first contacts the first battery unit, so that the first battery unit discharges externally; when the power in the first battery unit is lower than the set value, the power supply slide moves toward the second battery unit. During the movement, the first battery unit and the second battery unit are in parallel state, so that the power supply slide contacts the second battery unit, and the second battery unit discharges externally; The structural frame is provided with a limiting component, and when the first battery unit is discharged externally, the limiting component fixes the first battery unit and the structural frame to each other; when the second battery unit is discharged externally, the limiting component causes the first battery unit to fall off from the structural frame.

2. A battery pack device for drone according to claim 1, characterized in that: The limiting component includes a accommodating eaves and a switching shaft. The accommodating eaves is fixedly arranged at the lower position of the structural frame, and the switching shaft is rotatably arranged in the accommodating eaves. A limiting slat is fixedly arranged on the switching shaft. When the limiting slat is in a horizontal state, the first battery unit can be limited and blocked.

3. A battery pack device for an unmanned aerial vehicle according to claim 2, characterized in that: A swing lock rod is fixedly provided at the end of the switching shaft, a matching lock groove is provided on the surface of the swing lock rod, an insert tongue portion is inserted in the matching lock groove, and the matching lock groove is limited by the insert tongue portion to prevent the matching lock groove from rotating.

4. The battery pack device for drone according to claim 3, characterized in that: A magnetic panel is fixedly arranged on the insert tongue portion, and a track support arm is fixedly arranged on the surface of the structural frame. The track support arm is limitedly inserted through the magnetic panel.

5. The battery pack device for drone according to claim 4, characterized in that: A back plate is fixedly provided at the end of the track support arm, and a force spring is provided between the back plate and the magnetic panel. The force spring applies elastic pressure to the magnetic panel so that the tongue portion has an elastic tendency to move toward the inside of the matching lock groove.

6. The battery pack device for drone according to claim 5, characterized in that: The back plate is fixedly provided with an electromagnet unit, which generates magnetic force when powered on to attract the magnetic panel to move toward the back plate, so that the inserting tongue moves out of the matching lock groove.

7. The battery pack device for drone according to claim 1, characterized in that: A suspension support frame is arranged inside the structural frame, an external connection slot is opened through the surface of the structural frame, a connecting portion is fixedly arranged on the suspension support frame, the connecting portion passes through the external connection slot and extends to the outside of the structural frame, a suspension outer plate is arranged outside the structural frame, and the connecting portion and the suspension outer plate are fixed to each other.

8. The battery pack device for drone according to claim 7, characterized in that: An auxiliary spring is arranged below the suspension outer plate, and the auxiliary spring applies an upward elastic thrust to the suspension outer plate.

9. The battery pack device for drone according to claim 8, characterized in that: A synchronization socket is provided on the surface of the second battery unit, and an electromagnetic telescope is embedded and fixed in the movable insert strip. A telescopic plug shaft is provided on the electromagnetic telescope, and the telescopic activity of the telescopic plug shaft is controlled by the electromagnetic telescope. When the second battery unit is in contact with the power supply slide board, the telescopic plug shaft corresponds to the synchronization socket, and the telescopic plug shaft is extended to be inserted into the synchronization socket.

10. The battery pack device for drone according to claim 1, characterized in that: A parachute unit is disposed between the second battery unit and the first battery unit. The parachute unit is connected to the first battery unit and is used to decelerate the first battery unit during its falling process.

11. The battery pack device for drone according to claim 1, characterized in that: A conductive vertical plate is fixedly arranged on the surface of the power supply slide plate, and the conductive vertical plate is embedded and fixed in the movable fillet, and the power supply slide plate and the movable fillet are fixed to each other through the conductive vertical plate; The power supply slide is provided with a contact spring, and the power supply slide is in conductive contact with the second battery unit or the first battery unit through the contact spring. The contact spring is provided with an anti-stuck inclination angle, and a pressure-maintaining spring is provided inside the contact spring, and the pressure-maintaining spring is used to elastically support the contact spring.

12. The battery pack device for drone according to claim 1, characterized in that: A screw shaft is inserted in the movable fillet, and the screw shaft is spirally matched with the movable fillet. The movable fillet is driven to move by the rotation of the screw shaft. A screw motor for driving the screw shaft to rotate is arranged at the end of the screw shaft.

13. The battery pack device for drone according to claim 12, characterized in that: End sliding grooves are provided at both ends of the movable fillet, and a track sliding edge is fixedly provided on the surface of the structural frame, and the end sliding grooves are slidably limitedly matched with the track sliding edge.

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