Symmetrical battery module for unmanned helicopter

Abstract

The present invention discloses a symmetrical battery module for an unmanned helicopter, which relates to the technical field of unmanned helicopters, and comprises two battery outer frames symmetrically arranged in a casing of an unmanned helicopter, wherein a plurality of battery sheets are inserted and installed inside the two battery outer frames, and an upper swivel and a lower swivel located outside the main rotor motor of the unmanned helicopter are coaxially arranged between the two battery outer frames, and the upper swivel and the lower swivel have the same size and structure, and are symmetrically arranged up and down, and a counterweight is fixed to the top surface of the upper swivel and the bottom surface of the lower swivel, and a driving assembly for driving the upper swivel and the lower swivel to coaxially rotate in the opposite direction is arranged between the upper swivel and the lower swivel, and the two counterweights are respectively located on both sides of the main rotor motor of the unmanned helicopter. The present invention makes the weight of the two battery outer frames and the counterweights the same on both sides of the main rotor motor in the unmanned helicopter, thereby ensuring the stability of the center inside the unmanned helicopter, and improving the safety and stability of the unmanned helicopter in special circumstances.

Description

Technical Field

[0001] The present invention relates to the technical field of unmanned helicopters, and in particular to a symmetrical battery module for unmanned helicopters. Background Art

[0002] Unmanned aerial vehicles, also known as "drones", are unmanned aircraft that are controlled by radio remote control equipment and self-contained program control devices. Drone batteries are the source of power for drone flight. Existing drone battery packs are generally powered by AC power and store electrical energy. In order to increase the voltage, multiple batteries are generally connected in series to form a battery pack.

[0003] When installing the batteries of unmanned helicopters, in order to ensure that the weight distribution on the left and right sides of the fuselage is even, which is beneficial to the stability and controllability during flight and reduces the flight instability caused by the center of gravity shift, some use symmetrical installation of battery packs, that is, they are installed on both sides of the main rotor motor respectively. However, in the actual work process, some are equipped with battery packs by calculating the mileage, or due to accidents and emergencies, the number of battery cells in the battery pack is odd. Therefore, in the process of installing battery cells in the symmetrical battery module, it is inevitable that there will be more on one side and less on the other side, which may cause the overall center of gravity to shift, affecting the flight of the unmanned helicopter. Summary of the invention

[0004] The purpose of the present invention is to solve the problem in the prior art that when installing battery cells, there are more on one side and less on the other side, which affects the overall center of gravity, and to propose a symmetrical battery module for an unmanned helicopter.

[0005] In order to achieve the above object, the present invention adopts the following technical solutions:

[0006] A symmetrical battery module for an unmanned helicopter comprises two battery outer frames symmetrically arranged in a casing of the unmanned aircraft, a plurality of battery cells are inserted and installed inside the two battery outer frames, an upper rotating ring and a lower rotating ring located outside a main rotor motor of the unmanned aircraft are coaxially arranged between the two battery outer frames, the upper rotating ring and the lower rotating ring have the same size and structure, and are symmetrically arranged up and down, a counterweight is fixed to the top surface of the upper rotating ring and the bottom surface of the lower rotating ring, a driving assembly for driving the upper rotating ring and the lower rotating ring to coaxially rotate in the opposite direction is arranged between the upper rotating ring and the lower rotating ring, the two counterweights are respectively located on both sides of the main rotor motor of the unmanned aircraft, and the weight of the two counterweights is the same as the weight of a battery cell;

[0007] The inner wall of the battery outer frame is provided with a terminal seat for powering the battery cell, the top of a side surface of the battery outer frame facing the upper rotating ring is provided with a side groove, and a plurality of inner grooves are opened on the side wall of the side groove corresponding to the battery cell, each inner groove is provided with an elastic power-on component for assisting the power-on state of the battery cell, and a controller electrically connecting the plurality of elastic power-on components and the driving component is also installed on the outer side of the battery outer frame.

[0008] Preferably, a plurality of annular teeth are provided at the same position on the bottom surface of the upper rotating ring and the top surface of the lower rotating ring, and the driving assembly includes a servo motor and a bevel gear connected to the output shaft of the servo motor, and the upper and lower ends of the bevel gear are respectively meshed with the upper and lower groups of annular teeth.

[0009] Preferably, four groups of support members are installed in a circular array on the outer sides of the upper and lower swivels, and the support members include support columns, support gaskets fixed at the upper and lower ends of the support columns, and two arc-shaped slots opened on the sides of the support columns. The outer sides of the upper and lower swivels are both fitted in the arc-shaped slots, and the counterweight block does not contact the support columns.

[0010] Preferably, a frame-shaped slot is opened outward at the opening of the battery outer frame, and a plurality of linearly distributed battery cell slots are arranged at intervals inside the battery outer frame. Two terminal seats are arranged on the upper and lower inner walls of each battery cell slot, and electrode terminals are respectively arranged on the upper and lower sides of one end of the battery cell in the terminal seat, and a flange is extended outward from the other end of the battery cell to be caught in the frame-shaped slot.

[0011] Preferably, both sides of the top of the frame-shaped slot of the battery outer frame are penetrated by rotation grooves, and a flip plate is hingedly installed between the two rotation grooves. The flip plate fits in the frame-shaped slot, and both sides of one end of the flip plate are provided with rotation blocks that fit in the rotation grooves, and the other end of the flip plate and the top of the frame-shaped slot are provided with chamfers.

[0012] Preferably, screw holes are provided at the four corners of the side groove, and a baffle for sealing the side groove is installed in the side groove by bolts, and an induction lamp with a corresponding number is installed above the baffle corresponding to each elastic power-carrying component. The induction lamp is connected in series with each corresponding battery cell through a terminal seat, and the induction lamp is electrically connected to the controller.

[0013] Preferably, the elastic power supply component includes a telescopic rod vertically fixedly installed at the bottom of the inner groove, a lifting magnetic block connected to the top of the telescopic rod, a buffer spring sleeved on the outside of the piston end of the telescopic rod, an electromagnet block installed in the top wall of the inner groove and a connecting contact arranged below the lifting magnetic block, the electromagnet block is arranged in series with each corresponding battery cell through a terminal seat, and the circuit where the connecting contact is located is arranged in parallel with each corresponding battery cell.

[0014] Preferably, the middle part of the connecting contact piece is U-shaped and the two ends are horizontal, and the middle part of the connecting contact piece is fixedly attached to the bottom of the lifting magnetic block, and the ends of the two ends of the connecting contact piece away from the U-shaped part are respectively attached to the two ends of the corresponding battery cell and the energized parts of the other battery cells. When the battery cell is powered by the electromagnet block, the magnetic repulsion causes the lifting magnetic block to move downward and drive the circuit where the connecting contact piece is located to be disconnected. When the terminal block connected to the battery cell is powered off, the buffer spring and the magnetic attraction cause the lifting magnetic block to drive the circuit where the connecting contact piece is located upward to connect and be connected in parallel with the circuit where the battery cell is located.

[0015] Preferably, connecting rods are extended from the upper and lower corners of a side surface of the battery outer frame close to the upper rotating ring, and the battery outer frame is fixed to the upper and lower sides of the casing of the unmanned helicopter through a plurality of connecting rods.

[0016] Compared with the prior art, the present invention has the following advantages:

[0017] The present invention firstly arranges an upper rotating ring and a lower rotating ring of the same size between two battery outer frames, and arranges counterweights on the upper rotating ring and the lower rotating ring. When the number of battery cells in the battery outer frame needs to be adjusted according to actual needs, or when the battery cells in the battery outer frame fail or an emergency occurs, resulting in different numbers of battery cells in the two battery outer frames, the upper rotating ring and the lower rotating ring can be driven by a driving component to rotate 90 degrees in the opposite direction, so that the two counterweights are moved to a position close to a group of battery outer frames, so that the weights of the two battery outer frames and the counterweights are the same on both sides of the main rotor motor in the unmanned helicopter, thereby ensuring the stability of the center of the unmanned helicopter, and improving the safety and stability of the unmanned helicopter in special circumstances.

[0018] In addition, an elastic power-on component is set on one side of each battery cell. When a battery cell fails during the flight of the unmanned helicopter, the circuit where the single battery cell is located is in a power-off state. The location and number of battery cell failures can be quickly determined based on the on and off of the induction light. At the same time, the elastic power-on component can quickly isolate the circuit where the faulty battery cell is located to ensure the smooth flow of the entire circuit, thereby enabling the unmanned helicopter to continue to operate normally and stably, achieving rapid response and repair. BRIEF DESCRIPTION OF THE DRAWINGS

[0019] Figure 1 This is a schematic diagram of the structure of a symmetrical battery module for an unmanned helicopter proposed by the present invention;

[0020] Figure 2 This is a schematic structural diagram from another perspective of a symmetrical battery module for an unmanned helicopter proposed by the present invention;

[0021] Figure 3 This is a schematic structural diagram of a symmetrical battery module for an unmanned helicopter proposed by the present invention when the flip cover is opened;

[0022] Figure 4 This is a schematic structural diagram of a symmetrical battery module for an unmanned helicopter proposed by the present invention after the battery outer frame is cut open;

[0023] Figure 5 A side view of a battery frame of a symmetrical battery module for an unmanned helicopter proposed by the present invention;

[0024] Figure 6 This is a schematic structural diagram of a battery outer frame of a symmetrical battery module for an unmanned helicopter proposed by the present invention after being cut open at another time;

[0025] Figure 7 A symmetrical battery module for an unmanned helicopter proposed by the present invention Figure 4 Enlarged view of point A in the middle;

[0026] Figure 8 A symmetrical battery module for an unmanned helicopter proposed by the present invention Figure 6 Enlarged view of point B in the middle;

[0027] Fig. 9 A symmetrical battery module for an unmanned helicopter proposed by the present invention Figure 5 Enlarged view of point C in the middle;

[0028] Fig.10 This is a schematic diagram of the upper rotating ring structure of a symmetrical battery module for an unmanned helicopter proposed by the present invention;

[0029] Fig.11 This is a schematic diagram of the support structure of a symmetrical battery module for an unmanned helicopter proposed by the present invention;

[0030] Fig.12 A schematic diagram of the battery outer frame structure of a symmetrical battery module for an unmanned helicopter proposed by the present invention;

[0031] Fig.13 A schematic diagram of the battery cell structure of a symmetrical battery module for an unmanned helicopter proposed by the present invention;

[0032] Fig.14 This is a schematic diagram of the flip cover structure of a symmetrical battery module for an unmanned helicopter proposed by the present invention;

[0033] Fig.15 This is a circuit connection principle diagram of a symmetrical battery module for an unmanned helicopter proposed by the present invention.

[0034] In the figure: 1. battery frame; 2. flip cover; 3. upper swivel; 4. lower swivel; 5. drive assembly; 6. counterweight; 7. support; 8. battery cell; 9. side groove; 10. inner groove; 11. elastic power supply assembly; 12. induction lamp; 13. baffle; 101. frame slot; 102. battery cell slot; 103. connecting rod; 104. rotating groove; 105. terminal seat; 201. rotating block; 301. annular teeth; 71. support column; 72. support gasket; 73. arc slot; 801. electrode terminal; 802. flange; 111. telescopic rod; 112. buffer spring; 113. lifting magnetic block; 114. electromagnet block; 115. connecting contact. DETAILED DESCRIPTION

[0035] The technical solutions in the embodiments of the present invention will be clearly and completely described below in conjunction with the drawings in the embodiments of the present invention. Obviously, the described embodiments are only part of the embodiments of the present invention, rather than all the embodiments.

[0036] In the description of the present invention, it is necessary to understand that the terms "upper", "lower", "front", "back", "left", "right", "top", "bottom", "inside", "outside", etc., indicating the orientation or position relationship are based on the orientation or position relationship shown in the 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 a limitation on the present invention.

[0037] Reference Figure 1-Figure 3 A symmetrical battery module for an unmanned helicopter comprises two battery outer frames 1 symmetrically arranged in a casing of the unmanned helicopter, a plurality of battery sheets 8 are inserted and installed in the two battery outer frames 1, an upper swivel 3 and a lower swivel 4 are coaxially arranged on the outside of the main rotor motor of the unmanned helicopter, the upper swivel 3 and the lower swivel 4 are of the same size and structure, and are symmetrically arranged up and down, and the upper swivel 3 and the lower swivel 4 are located in the middle of the two battery outer frames 1, a counterweight block 6 is fixed on the top surface of the upper swivel 3 and the bottom surface of the lower swivel 4, and a driving mechanism for the upper swivel 3 and the lower swivel 4 is arranged between the upper swivel 3 and the lower swivel 4. The driving assembly 5 of the ring 3 and the lower swivel ring 4 rotate coaxially in the opposite direction. When the battery cells 8 in the two battery frames 1 are inconsistent, in order to maintain the stability of the overall center of gravity, the counterweight method is used to achieve the same weight distribution of the two battery frames 1 on both sides of the main rotor motor. The two counterweights 6 are respectively located on both sides of the main rotor motor of the drone, so that when the upper swivel ring 3 and the lower swivel ring 4 rotate in the opposite direction at the same time, the two counterweights 6 rotate 90° and then move to the same side position, and the weight of the two counterweights 6 is the same as the weight of one battery cell 8, thereby completing the counterweighting of one battery cell 8.

[0038] Reference Figure 4-Figure 9 and Fig.15 The inner wall of the battery outer frame 1 is provided with a terminal seat 105 which is energized with the battery cell 8, so that each battery cell 8 is in a section of the circuit, and then all the battery cells 8 constitute the entire power supply circuit. A side groove 9 is provided on the top of one side of the battery outer frame 1 facing the upper rotating ring 3. The length of the side groove 9 is slightly smaller than the length of the entire battery outer frame 1, and a plurality of inner grooves 10 are opened on the side wall of the side groove 9 corresponding to the battery cell 8. Each inner groove 10 is provided with an elastic power-on component 11 which assists the power-on state of the battery cell 8, that is, when the power is cut off in a small section of the circuit where the battery cell 8 is located, the elastic power-on component 11 can complete the circuit to ensure the power supply of the entire circuit. A controller electrically connecting the plurality of elastic power-on components 11 and the driving component 5 is also installed on the outside of the battery outer frame 1. The controller can be installed in the battery outer frame 1 or the casing of the unmanned helicopter according to actual needs to assist in regulating the entire power supply circuit. Fig.15 Where P is the controller.

[0039] The four corners of the side groove 9 are provided with screw holes, and a baffle 13 for sealing the side groove 9 is installed in the side groove 9 by bolts. The detachable setting of the baffle 13 facilitates the installation and maintenance of the elastic power-carrying component 11 in the inner groove 10. The upper part of the baffle 13 corresponds to each elastic power-carrying component 11 and is installed with a corresponding numbered induction lamp 12. For example, all the induction lamps 12 in one battery outer frame 1 are numbered A1-An in sequence, and all the induction lamps 12 in another battery outer frame 1 are numbered B1-Bn in sequence. The induction lamp 12 is connected to the opposite battery outer frame 10 through the terminal seat 105. Each battery cell 8 that should be set is set in series, that is, the induction lamp 12 will be powered on and lit after the battery cell 8 is installed in the battery frame 1. When the battery cell 8 fails or the battery cell 8 is not installed, the induction lamp 12 is in an off state, and the induction lamp 12 is electrically connected to the controller, so that the controller can sense the on and off state of the induction lamp 12 and then determine the number. According to the number, the controller determines the number of battery cells 8 that are placed in sequence or can work normally in the two battery frames 1, and then adjusts the entire circuit according to the actual state, or controls the operation of the drive component 5.

[0040] Reference Figure 1-Figure 2 and Fig.10 A plurality of annular teeth 301 are provided at the same position on the bottom surface of the upper swivel ring 3 and the top surface of the lower swivel ring 4. The driving assembly 5 includes a servo motor and a bevel gear connected to the output shaft of the servo motor. The servo motor can rotate forward and reverse, and the servo motor is fixed in the casing of the unmanned helicopter by a corresponding support frame. The upper and lower ends of the bevel gear are respectively engaged with the upper and lower groups of annular teeth 301. When the servo motor drives the bevel gear to rotate, the upper swivel ring 3 and the lower swivel ring 4 rotate in the opposite direction at the same time with the cooperation of the two groups of annular teeth 301.

[0041] Reference Figure 1-Figure 2 and Fig.11Four groups of support members 7 for support are installed in a circular array on the outer sides of the upper swivel ring 3 and the lower swivel ring 4. While ensuring the rotational stability of the upper swivel ring 3 and the lower swivel ring 4, the four support members 7 are distributed in a circular manner and matched with the two battery outer frames 1. The support member 7 includes a support column 71, a support gasket 72 fixed at the upper and lower ends of the support column 71, and two arc-shaped slots 73 opened on the side of the support column 71. A number of screw holes are provided on the outer sides of the upper and lower support gaskets 72. The support gaskets 72 are fixed to the unmanned helicopter casing through the screw holes by bolts, thereby realizing the stability of the vertical placement of the support column 71. The outer sides of the upper swivel ring 3 and the lower swivel ring 4 are both matched and arranged in the arc-shaped slots 73. When the drive assembly 5 is working, the upper swivel ring 3 and the lower swivel ring 4 rotate horizontally around the main rotor motor, and the counterweight block 6 does not contact the support column 71, thereby ensuring that when the upper swivel ring 3 and the lower swivel ring 4 rotate, the counterweight block 6 will not interfere with the rotation.

[0042] Reference Figure 1-Figure 2 and Figure 12-13 The internal interval of the battery outer frame 1 is provided with a plurality of linearly distributed battery cell slots 102 to achieve the same spacing when adjacent battery cells 8 are placed, and at the same time, the adjacent battery cells 8 can be made not to fit together to facilitate heat dissipation. Two terminal seats 105 are provided on the upper and lower inner walls of each battery cell slot 102. The upper and lower sides of one end of the battery cell 8 are respectively provided with electrode terminals 801 placed in the terminal seat 105 to realize power supply of the battery cell 8. The other end of the battery cell 8 extends outwardly to have a flange 802 stuck in the frame-shaped slot 101. When the battery cell 8 is inserted, there is a gap between the flanges 802 of two adjacent battery cells 8 to facilitate the battery cell 8 to be pulled out through the gap.

[0043] At the same time, in order to ensure that the battery frame 1 is firmly fixed in the unmanned helicopter, connecting rods 103 are extended from the upper and lower corners of the side of the battery frame 1 close to the upper swivel 3, and the battery frame 1 is fixed to the upper and lower sides of the casing of the unmanned helicopter through a plurality of connecting rods 103, and a screw hole for inserting a bolt is provided in the middle of the connecting rod 103.

[0044] Reference Figure 1-Figure 3 and 12. Fig.14, a frame-shaped card slot 101 is opened outward at the opening of the battery outer frame 1, and rotation slots 104 are penetrated from top to bottom on both sides of the top of the frame-shaped card slot 101 of the battery outer frame 1, and a flip plate 2 is hingedly installed between the two rotation slots 104, and the flip plate 2 fits in the frame-shaped card slot 101, so that the flip plate 2 can cover all the battery cells 8 and stably place all the battery cells 8 in the battery outer frame 1, and the flip plate 2 can be fixed with bolts or electrically locked to block the opening of the battery outer frame 1, and rotating blocks 201 that fit in the rotation slot 104 are provided on both sides of one end of the flip plate 2, and the other end of the flip plate 2 and the top of the frame-shaped card slot 101 are chamfered to ensure that the flip plate 2 can be flipped from horizontal to vertical, and at the same time, the flip plate 2 can be flipped to fit in the frame-shaped card slot 101, that is, Figure 1 and Figure 3 shown.

[0045] Reference Figure 4-Figure 9 and Fig.15 The elastic power supply component 11 includes a telescopic rod 111 vertically fixedly installed at the bottom of the inner groove 10, a lifting magnet 113 connected to the top of the telescopic rod 111, a buffer spring 112 sleeved on the outer side of the piston end of the telescopic rod 111, an electromagnet block 114 installed in the top wall of the inner groove 10 and a connecting contact 115 arranged below the lifting magnet 113. The telescopic rod 111 is fixedly connected to the lifting magnet 113 to realize the up and down movement of the lifting magnet 113, driving the telescopic rod 111 to contract and extend. The electromagnet block 114 is connected to the terminal block 10. 5 is arranged in series with each corresponding battery cell 8, so that when the battery cell 8 works normally, the electromagnet block 114 in the same small series circuit works, so that the electromagnet block 114 and the lifting magnetic block 113 repel each other. Since the position of the electromagnet block 114 is constant, the lifting magnetic block 113 moves away from the electromagnet block 114, that is, moves downward, and compresses the buffer spring 112. The circuit where the connecting contact piece 115 is located is connected in parallel with each corresponding battery cell 8. Here, only when the circuit where the connecting contact piece 115 is located is powered on.

[0046] The middle part of the connecting contact piece 115 is U-shaped and the two ends are horizontal, and the middle part of the connecting contact piece 115 is fixedly attached to the bottom of the lifting magnetic block 113, so that the connecting contact piece 115 follows the lifting magnetic block 113 to rise and fall, and the two ends of the connecting contact piece 115 away from the end of the U-shaped part are respectively attached to the two ends of the corresponding battery cell 8 and the energized parts of the other battery cells 8, that is, only when the circuit where the battery cell 8 is located is disconnected, when the battery cell 8 supplies power to the electromagnet block 114, the lifting magnetic block 113 is driven downward by magnetic repulsion and drives the circuit where the connecting contact piece 115 is located to be disconnected, and when the terminal seat 105 connected to the battery cell 8 is powered off, the buffer spring 112 and the magnetic attraction cause the lifting magnetic block 113 to drive the circuit where the connecting contact piece 115 is located to be connected and connected in parallel with the circuit where the battery cell 8 is located, which is convenient for avoiding interference when the battery cell 8 is working normally, and for timely and rapid repair of the overall circuit when a fault occurs in the battery cell 8, thereby ensuring the smoothness of the overall power supply circuit.

[0047] Working principle: The number of battery cells 8 needs to be adjusted according to the working requirements of the unmanned helicopter. At this time, the number of battery cells 8 is just an odd number. The battery cells 8 are inserted into the battery cell slots 102 of the two battery frames 1 in turn, so that the battery cells 8 inside the two battery frames 1 are placed symmetrically as much as possible, until the number of battery cells 8 in one group of battery frames 1 is one more than the number of battery cells 8 in the other group of battery frames 1. At this time, the flip cover 2 is closed, and after the battery cells 8 remain stable, the motor terminal of each battery cell 8 fits in the terminal seat 105, so that the circuit where the battery cell 8 is located is connected to the overall circuit. At this time, the induction lamp 12 connected in series with the battery cell 8 is on, and the electromagnet block 114 is in a power-on state. Since the electromagnet block 114 is connected to the lifting The magnetic blocks 113 repel each other, and at this time, the lifting magnetic block 113 moves downward, driving the connecting contact piece 115 downward, and the circuit where the connecting contact piece 115 is located is disconnected. In the battery cell slot 102 where no battery cell 8 is inserted, due to the lack of connection of the battery cell 8 at the terminal seat 105, the circuit where the terminal seat 105 without the battery cell 8 is located is in a disconnected state, that is, the induction light 12 at this location is off, and the electromagnet block 114 at this location is powered off. Under the state of attraction between the buffer spring 112 and the lifting magnetic block 113 and the electromagnet block 114, the lifting magnetic block 113 at this time is moved upward until it contacts the electromagnet block 114, and the circuit where the connecting contact piece 115 is located begins to be energized, so that the entire circuit bypasses the circuit without the battery cell 8, and the operation of the entire circuit is kept stable;

[0048] When the overall circuit is running, the controller receives the switch status of several induction lights 12, and determines which group of internal battery cells 8 in the two battery frames 1 has the fewer number of internal battery cells 8 according to the number of the induction lights 12. After the determination is completed, the servo motor is driven to work, and the servo motor drives the bevel gear to rotate, thereby driving the upper swivel ring 3 and the lower swivel ring 4 to rotate 90°. After the upper swivel ring 3 and the lower swivel ring 4 rotate 90° in the opposite direction, the two counterweights 6 are moved to the battery frame 1 where the battery cells 8 with fewer number of internal battery cells 8 are located, so that the weights of the two battery frames 1 on both sides of the main rotor motor are equal;

[0049] When the unmanned helicopter is flying steadily, if some of the battery cells 8 fail at this time, the circuit where the battery cell 8 is located is disconnected, the induction light 12 is disconnected and extinguished, and the electromagnet block 114 is disconnected. Based on the above principle, the circuit where the contact piece 115 is located rises to replace the circuit where the original battery cell 8 is located, so that the entire circuit can work normally. At this time, even if the controller contacts the induction light 12 and the number changes, since the battery cell 8 is still in the battery frame 1, the weight of the two battery frames 1 does not change, so that the servo motor remains normal.

[0050] The above description is only a preferred specific implementation manner of the present invention, but the protection scope of the present invention is not limited thereto. Any technician familiar with the technical field can make equivalent replacements or changes according to the technical scheme and inventive concept of the present invention within the technical scope disclosed by the present invention, which should be covered by the protection scope of the present invention.

Claims

1. A symmetrical battery module for an unmanned helicopter, comprising two battery frames (1) symmetrically arranged in a housing of the unmanned helicopter, characterized in that: A plurality of battery cells (8) are inserted and installed inside the two battery outer frames (1); an upper rotating ring (3) and a lower rotating ring (4) are coaxially arranged between the two battery outer frames (1) and are located outside the main rotor motor of the unmanned aerial vehicle; the upper rotating ring (3) and the lower rotating ring (4) are of the same size and structure and are symmetrically arranged up and down; a counterweight (6) is fixed to the top surface of the upper rotating ring (3) and the bottom surface of the lower rotating ring (4); a driving component (5) is arranged between the upper rotating ring (3) and the lower rotating ring (4) for driving the upper rotating ring (3) and the lower rotating ring (4) to rotate coaxially and in opposite directions; the two counterweights (6) are respectively located on both sides of the main rotor motor of the unmanned aerial vehicle, and the weight of the two counterweights (6) is the same as the weight of one battery cell (8); The inner wall of the battery outer frame (1) is provided with a terminal seat (105) for powering the battery cell (8); a side groove (9) is provided at the top of a side surface of the battery outer frame (1) facing the upper rotating ring (3); and a plurality of inner grooves (10) are provided on the side wall of the side groove (9) corresponding to the battery cell (8); each inner groove (10) is provided with an elastic power supply component (11) for assisting the battery cell (8) in the power supply state; and a controller for electrically connecting the plurality of elastic power supply components (11) and the drive component (5) is also installed on the outer side of the battery outer frame (1); The elastic power supply component (11) comprises a telescopic rod (111) vertically fixedly mounted at the bottom of the inner groove (10), a lifting magnetic block (113) connected to the top of the telescopic rod (111), a buffer spring (112) sleeved on the outside of the piston end of the telescopic rod (111), an electromagnet block (114) mounted in the top wall of the inner groove (10), and a connecting contact piece (115) arranged below the lifting magnetic block (113), wherein the electromagnet block (114) is connected in series with each corresponding battery cell (8) through a terminal seat (105), and the circuit where the connecting contact piece (115) is located is connected in parallel with each corresponding battery cell (8); The middle part of the connecting contact piece (115) is U-shaped and the two ends are horizontal, and the middle part of the connecting contact piece (115) is fixedly attached to the bottom of the lifting magnetic block (113), and the ends of the two ends of the connecting contact piece (115) away from the U-shaped part are respectively attached to the two ends of the corresponding battery cell (8) and the power supply parts of the other battery cells (8). When the battery cell (8) supplies power to the electromagnet block (114), the lifting magnetic block (113) moves downward due to magnetic repulsion and drives the circuit where the connecting contact piece (115) is disconnected. When the terminal seat (105) connected to the battery cell (8) is powered off, the buffer spring (112) and magnetic attraction cause the lifting magnetic block (113) to drive the circuit where the connecting contact piece (115) is connected upward to connect and connect in parallel with the circuit where the battery cell (8) is located.

2. A symmetrical battery module for an unmanned helicopter according to claim 1, characterized in that: A plurality of annular teeth (301) are provided at the same position on the bottom surface of the upper rotating ring (3) and the top surface of the lower rotating ring (4); the driving assembly (5) comprises a servo motor and a bevel gear connected to an output shaft of the servo motor; upper and lower ends of the bevel gear are respectively meshed with upper and lower groups of annular teeth (301).

3. The symmetrical battery module for an unmanned helicopter according to claim 1, characterized in that: Four groups of supporting members (7) are installed in a circular array on the outer sides of the upper rotating ring (3) and the lower rotating ring (4). The supporting members (7) include a supporting column (71), supporting gaskets (72) fixed at the upper and lower ends of the supporting column (71), and two arc-shaped slots (73) opened on the side of the supporting column (71). The outer sides of the upper rotating ring (3) and the lower rotating ring (4) are both arranged in a matching manner in the arc-shaped slots (73), and the counterweight block (6) does not contact the supporting column (71).

4. The symmetrical battery module for an unmanned helicopter according to claim 1, characterized in that: The opening of the battery outer frame (1) is provided with a frame-shaped slot (101) extending outward, and the interior of the battery outer frame (1) is provided with a plurality of linearly distributed battery cell slots (102) at intervals, and two terminal seats (105) are provided on the upper and lower inner walls of each battery cell slot (102), and electrode terminals (801) disposed in the terminal seat (105) are provided on the upper and lower sides of one end of the battery cell (8), respectively, and the other end of the battery cell (8) is provided with a flange (802) extending outwardly and being clamped in the frame-shaped slot (101).

5. The symmetrical battery module for an unmanned helicopter according to claim 4, characterized in that: The top of the frame-shaped slot (101) of the battery outer frame (1) is penetrated by rotation slots (104) at both sides, and a flip plate (2) is hingedly mounted between the two rotation slots (104). The flip plate (2) fits in the frame-shaped slot (101), and rotation blocks (201) that fit in the rotation slot (104) are provided on both sides of one end of the flip plate (2). The other end of the flip plate (2) and the top of the frame-shaped slot (101) are chamfered.

6. The symmetrical battery module for an unmanned helicopter according to claim 1, characterized in that: Screw holes are provided at the four corners of the side groove (9), and a baffle (13) for sealing the side groove (9) is installed in the side groove (9) by means of bolts. An induction lamp (12) with a corresponding number is installed above the baffle (13) at a position corresponding to each elastic power supply component (11). The induction lamp (12) is connected in series with each correspondingly arranged battery cell (8) via a terminal seat (105), and the induction lamp (12) is electrically connected to a controller.

7. The symmetrical battery module for an unmanned helicopter according to claim 1, characterized in that: Connecting rods (103) extend from the upper and lower corners of a side surface of the battery outer frame (1) close to the upper rotating ring (3), and the battery outer frame (1) is fixed to the upper and lower sides of the casing of the unmanned helicopter via a plurality of connecting rods (103).

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