CN113911371A - Unmanned aerial vehicle battery increase-volume anti-falling system - Google Patents
Unmanned aerial vehicle battery increase-volume anti-falling system Download PDFInfo
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- CN113911371A CN113911371A CN202111194833.2A CN202111194833A CN113911371A CN 113911371 A CN113911371 A CN 113911371A CN 202111194833 A CN202111194833 A CN 202111194833A CN 113911371 A CN113911371 A CN 113911371A
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- 238000001514 detection method Methods 0.000 claims abstract description 15
- 238000005192 partition Methods 0.000 claims description 12
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- 230000005611 electricity Effects 0.000 claims 1
- 238000007689 inspection Methods 0.000 abstract description 6
- 230000002159 abnormal effect Effects 0.000 description 6
- 230000000694 effects Effects 0.000 description 6
- 238000012360 testing method Methods 0.000 description 6
- 238000000034 method Methods 0.000 description 4
- 238000010276 construction Methods 0.000 description 2
- 238000013461 design Methods 0.000 description 2
- 238000011161 development Methods 0.000 description 2
- 230000002349 favourable effect Effects 0.000 description 2
- 230000004927 fusion Effects 0.000 description 2
- 238000009434 installation Methods 0.000 description 2
- 238000012423 maintenance Methods 0.000 description 2
- 238000004804 winding Methods 0.000 description 2
- 230000004913 activation Effects 0.000 description 1
- 230000006978 adaptation Effects 0.000 description 1
- 230000009286 beneficial effect Effects 0.000 description 1
- 230000005540 biological transmission Effects 0.000 description 1
- 230000003139 buffering effect Effects 0.000 description 1
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- 238000005516 engineering process Methods 0.000 description 1
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B64—AIRCRAFT; AVIATION; COSMONAUTICS
- B64D—EQUIPMENT FOR FITTING IN OR TO AIRCRAFT; FLIGHT SUITS; PARACHUTES; ARRANGEMENT OR MOUNTING OF POWER PLANTS OR PROPULSION TRANSMISSIONS IN AIRCRAFT
- B64D45/00—Aircraft indicators or protectors not otherwise provided for
- B64D45/04—Landing aids; Safety measures to prevent collision with earth's surface
- B64D45/06—Landing aids; Safety measures to prevent collision with earth's surface mechanical
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B64—AIRCRAFT; AVIATION; COSMONAUTICS
- B64D—EQUIPMENT FOR FITTING IN OR TO AIRCRAFT; FLIGHT SUITS; PARACHUTES; ARRANGEMENT OR MOUNTING OF POWER PLANTS OR PROPULSION TRANSMISSIONS IN AIRCRAFT
- B64D17/00—Parachutes
- B64D17/02—Canopy arrangement or construction
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B64—AIRCRAFT; AVIATION; COSMONAUTICS
- B64D—EQUIPMENT FOR FITTING IN OR TO AIRCRAFT; FLIGHT SUITS; PARACHUTES; ARRANGEMENT OR MOUNTING OF POWER PLANTS OR PROPULSION TRANSMISSIONS IN AIRCRAFT
- B64D27/00—Arrangement or mounting of power plants in aircraft; Aircraft characterised by the type or position of power plants
- B64D27/02—Aircraft characterised by the type or position of power plants
- B64D27/24—Aircraft characterised by the type or position of power plants using steam or spring force
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- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01M—PROCESSES OR MEANS, e.g. BATTERIES, FOR THE DIRECT CONVERSION OF CHEMICAL ENERGY INTO ELECTRICAL ENERGY
- H01M50/00—Constructional details or processes of manufacture of the non-active parts of electrochemical cells other than fuel cells, e.g. hybrid cells
- H01M50/20—Mountings; Secondary casings or frames; Racks, modules or packs; Suspension devices; Shock absorbers; Transport or carrying devices; Holders
- H01M50/204—Racks, modules or packs for multiple batteries or multiple cells
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- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01M—PROCESSES OR MEANS, e.g. BATTERIES, FOR THE DIRECT CONVERSION OF CHEMICAL ENERGY INTO ELECTRICAL ENERGY
- H01M50/00—Constructional details or processes of manufacture of the non-active parts of electrochemical cells other than fuel cells, e.g. hybrid cells
- H01M50/20—Mountings; Secondary casings or frames; Racks, modules or packs; Suspension devices; Shock absorbers; Transport or carrying devices; Holders
- H01M50/244—Secondary casings; Racks; Suspension devices; Carrying devices; Holders characterised by their mounting method
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- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01M—PROCESSES OR MEANS, e.g. BATTERIES, FOR THE DIRECT CONVERSION OF CHEMICAL ENERGY INTO ELECTRICAL ENERGY
- H01M50/00—Constructional details or processes of manufacture of the non-active parts of electrochemical cells other than fuel cells, e.g. hybrid cells
- H01M50/20—Mountings; Secondary casings or frames; Racks, modules or packs; Suspension devices; Shock absorbers; Transport or carrying devices; Holders
- H01M50/249—Mountings; Secondary casings or frames; Racks, modules or packs; Suspension devices; Shock absorbers; Transport or carrying devices; Holders specially adapted for aircraft or vehicles, e.g. cars or trains
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- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01M—PROCESSES OR MEANS, e.g. BATTERIES, FOR THE DIRECT CONVERSION OF CHEMICAL ENERGY INTO ELECTRICAL ENERGY
- H01M50/00—Constructional details or processes of manufacture of the non-active parts of electrochemical cells other than fuel cells, e.g. hybrid cells
- H01M50/20—Mountings; Secondary casings or frames; Racks, modules or packs; Suspension devices; Shock absorbers; Transport or carrying devices; Holders
- H01M50/262—Mountings; Secondary casings or frames; Racks, modules or packs; Suspension devices; Shock absorbers; Transport or carrying devices; Holders with fastening means, e.g. locks
- H01M50/264—Mountings; Secondary casings or frames; Racks, modules or packs; Suspension devices; Shock absorbers; Transport or carrying devices; Holders with fastening means, e.g. locks for cells or batteries, e.g. straps, tie rods or peripheral frames
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- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
- Y02E—REDUCTION OF GREENHOUSE GAS [GHG] EMISSIONS, RELATED TO ENERGY GENERATION, TRANSMISSION OR DISTRIBUTION
- Y02E60/00—Enabling technologies; Technologies with a potential or indirect contribution to GHG emissions mitigation
- Y02E60/10—Energy storage using batteries
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- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
- Y02T—CLIMATE CHANGE MITIGATION TECHNOLOGIES RELATED TO TRANSPORTATION
- Y02T50/00—Aeronautics or air transport
- Y02T50/60—Efficient propulsion technologies, e.g. for aircraft
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- Engineering & Computer Science (AREA)
- Aviation & Aerospace Engineering (AREA)
- Chemical & Material Sciences (AREA)
- Chemical Kinetics & Catalysis (AREA)
- Electrochemistry (AREA)
- General Chemical & Material Sciences (AREA)
- Mechanical Engineering (AREA)
- Charge And Discharge Circuits For Batteries Or The Like (AREA)
Abstract
The invention discloses an unmanned aerial vehicle battery capacity-increasing anti-falling system which comprises a battery shell and an anti-falling device, wherein two groups of battery cells are arranged in the battery shell, one group of battery cells are butted with a battery chip through an industrial protocol, and the top of the battery shell is provided with a key switch electrically connected with the battery cells; the anti-falling device is characterized in that an electronic detection element and a controller are further arranged in the battery shell and are powered by the battery cell, the controller is electrically connected with the electronic detection element and the anti-falling device, the anti-falling device is arranged at the front part of the battery shell, an electric contact is arranged at the joint of the anti-falling device and the anti-falling device, and the battery cell supplies power to the anti-falling device through the electric contact. The invention can make up the short board of the battery capacity and flight safety of the existing unmanned aerial vehicle, meet the demand of the power department on the working time of the unmanned aerial vehicle for the line inspection work; simultaneously, at the anterior integrated anti-falling device of battery case, control the anti-falling device through the controller and start and protect the unmanned aerial vehicle organism to effectively reduce the economic loss because of the unmanned aerial vehicle crash leads to.
Description
Technical Field
The invention belongs to the technical field of unmanned aerial vehicle devices, and particularly relates to an unmanned aerial vehicle battery capacity increasing and falling preventing system.
Background
With the development of the power grid industry and the progress of science and technology, the construction level of the power grid infrastructure is comprehensively improved and improved day by day, the upgrading of the power industry is gradually advanced in depth and order, and new practical requirements are provided for working tools and working methods. Based on this, novel instruments such as unmanned aerial vehicle, intelligent robot are applied to in power grid planning, construction, operation and the maintenance, especially utilize unmanned aerial vehicle to carry out the work of normalizing tour and spread comprehensively to transmission line.
At present, the duration of unmanned aerial vehicle for routing inspection in the industry is generally short, so that the routing inspection work efficiency is low. When each unmanned aerial vehicle goes out to work, 10-15 batteries need to be carried at least to basically meet the requirement of going out to fly operation on the same day, but along with the increase of the number of the batteries going out to be carried, the total weight of the batteries is increased by geometric times, inconvenience is brought to patrol and examine work, and therefore the unmanned aerial vehicle patrol and examine work provides higher requirements for the battery endurance.
On the other hand, unmanned aerial vehicle can't guarantee self balance at some times at the in-process of carrying out the flight task, and then leads to unmanned aerial vehicle to fall, and unmanned aerial vehicle original equipment battery price cost is higher, in case unmanned aerial vehicle meets emergency and leads to the crash when flight operation, also can cause economic loss.
Disclosure of Invention
Based on the above, the invention provides an unmanned aerial vehicle battery capacity increasing and falling preventing device, which aims to solve the problems that the battery endurance of the existing unmanned aerial vehicle is low and the inspection working quality of the power industry is affected, and meanwhile, the property loss caused by the falling of the unmanned aerial vehicle is reduced.
The invention adopts the technical scheme that the unmanned aerial vehicle battery capacity-increasing anti-falling system comprises a battery shell and an anti-falling device, wherein the anti-falling device is arranged above an unmanned aerial vehicle body, two groups of battery cells are arranged in the battery shell, one group of battery cells are butted with a battery chip through an industrial protocol, and the top of the battery shell is provided with a key switch electrically connected with the battery cells; the anti-falling device is characterized in that an electronic detection element and a controller are further arranged in the battery shell and are powered by the battery cell, the controller is electrically connected with the electronic detection element and the anti-falling device, the anti-falling device is arranged at the front part of the battery shell, an electric contact is arranged at the joint of the anti-falling device and the anti-falling device, and the battery cell supplies power to the anti-falling device through the electric contact.
Preferably, the capacities of the two groups of cells are not lower than 7000 milliamperes.
Preferably, the anti-falling device comprises a mounting box, a movable pressing plate, a sensor and a parachute, wherein the top end of the mounting box is open, the side wall and the side wall of the battery shell are integrally formed, the movable pressing plate is detachably arranged on the top end of the mounting box through an electric control clamping piece, the sensor is arranged at the bottom of the mounting box and is electrically connected with the electric control clamping piece through the controller, and the parachute is collected and placed in the mounting box and is fixedly connected with the mounting box through a pull rope.
Preferably, the sensor comprises an altitude sensor and an attitude sensor, and a partition plate is arranged between the sensor and the parachute.
Preferably, the middle part of the partition board is provided with a slotted hole, the four corners of the partition board are provided with small holes, and the pull rope is installed through the small holes.
Preferably, the electronic detection element comprises a GPS and an accelerometer, the electronic detection element and the controller are arranged at the top of the battery shell, and a spacer is arranged between the electronic detection element and the battery core.
Preferably, the lower part of the two sides of the battery shell is provided with a clamping groove which is detachably connected with the unmanned aerial vehicle body.
Preferably, the middle parts of the two sides of the battery shell are provided with connecting rings close to the anti-falling device, and the binding bands are used for connecting the battery shell and the unmanned aerial vehicle body through the connecting rings.
Preferably, battery case top end face flushes with anti-falling device, and the bottom end face surpasss anti-falling device and matches with unmanned aerial vehicle organism top recess.
Compared with the prior art, the invention has the beneficial effects that:
1) the invention can make up the current unmanned aerial vehicle battery capacity and flight safety short plate, increases the battery capacity of the battery cell from the existing 3850 milliamperes to 7000 milliamperes through expanding the battery, and has the endurance of about 40-50 minutes, realizes the long-time endurance capability of the battery under the condition of rated load, and meets the requirement of the power department on the working time of the unmanned aerial vehicle for line inspection work; meanwhile, the anti-falling device is integrated at the front part of the battery shell, when the unmanned aerial vehicle crashes due to an emergency in flight, the embedded electronic detection element captures an abnormal state and then controls the anti-falling device to start to protect the body of the unmanned aerial vehicle through the controller, so that the economic loss caused by crash of the unmanned aerial vehicle is effectively reduced, and the development and maintenance of electric power facilities in China are effectively supported;
2) through tests, when the battery capacity is 7000-plus 7100 milliampere, the flight power can provide the best cruising ability compared with the consumption loss generated by the load of the unmanned aerial vehicle, and the cost performance is highest;
3) the anti-falling device is arranged at the front part of the battery shell, so that the design requirement of the flight mechanics of the unmanned aerial vehicle body is better met, the parachute is more standard to be arranged, and the unmanned aerial vehicle body is protected by popping up when falling;
4) by arranging the altitude sensor and the attitude sensor, the controller carries out double-sensor data fusion to realize accurate judgment, effectively prevent collision and falling and avoid the risk of the fryer caused by propeller winding;
5) the parachute and the sensor are isolated by the partition plate, so that mutual interference is prevented, the effect of the anti-falling device is prevented from being influenced, and the partition plate is provided with a hollow groove, so that the circuit installation is facilitated and the self weight is reduced;
6) the abnormal state of the unmanned aerial vehicle is captured through the GPS and the accelerometer, so that accurate time standards of positioning, speed measurement and high precision are provided, the judgment precision of the abnormal flight of the unmanned aerial vehicle can be improved, and the effective protection of the unmanned aerial vehicle body is realized;
7) the battery shell and the unmanned aerial vehicle body are connected through the connecting ring by utilizing the binding band, so that the battery shell, the anti-falling device and the unmanned aerial vehicle body are firmly connected at the moment that the parachute is popped out, and secondary protection is formed;
8) battery case and anti-falling device top end face parallel and level, the air current of being convenient for is level and smooth to be passed through, reduces the resistance, and battery case lower part and the recess looks adaptation at unmanned aerial vehicle organism top are connected as an organic wholely with the unmanned aerial vehicle organism, are favorable to compact structure.
Drawings
FIG. 1 is a schematic structural view of the present invention;
FIG. 2 is a partial schematic view of the present invention;
FIG. 3 is a schematic view of a battery case according to the present invention;
FIG. 4 is a front view of a battery housing of the present invention;
FIG. 5 is a cross-sectional view of the fall arrest device of the present invention;
FIG. 6 is a schematic diagram of electrical connections for the electronic components of the present invention;
the labels in the figure are: 1. battery case, 101, electric core, 102, battery chip, 103, draw-in groove, 2, anti-falling device, 201, mounting box, 202, activity clamp plate, 203, sensor, 204, parachute, 205, automatically controlled fastener, 206 baffle, 3, unmanned aerial vehicle organism, 4, key switch, 5, electronic detection original paper, 6, controller, 7, go-between.
Detailed Description
The invention will be further explained in conjunction with the drawings attached to the specification in order to facilitate better understanding by those skilled in the art.
Example 1
1-6, an unmanned aerial vehicle battery increases and holds anti-falling system, includes battery housing 1 and anti-falling device 2, installs in unmanned aerial vehicle organism 3 top, and unmanned aerial vehicle organism 3 top is equipped with the recess for install battery housing 1.
Two groups of battery cells 101 are arranged in the battery shell 1, the capacity of the two groups of battery cells 101 is not lower than 7000 milliamperes, and the applicant passes experimental verification, when the battery capacity is 7000 plus 7100 milliamperes, the provided flight power has the best cruising ability after offsetting the consumption generated by the load added by the unmanned aerial vehicle, and the cost investment is small; for normal use of the battery cells 101, a group of the battery cells 101 are docked with the battery chip 102 by an industrial protocol; the top of the battery shell 1 is provided with a key switch 4 electrically connected with the battery core 101, and whether the battery core 101 supplies power is controlled through the key switch 4.
An electronic detection element 5 and a controller 6 are further arranged in the battery shell 1 and are powered by the battery core 101, and the controller 6 is electrically connected with the electronic detection element 5 and the anti-falling device 2. Specifically, electron detection component 5 includes GPS and accelerometer, catches unmanned aerial vehicle's abnormal state through GPS and accelerometer, provides accurate location, the time standard of measuring the speed and the high accuracy, controller 6 mainly controls through the chip procedure, adopt 2 nd generation intelligent algorithm, cooperation high speed processor, 8000 attitude data analysis per second, the instantaneous activation, can realize quick response under the critical condition in 0.01 second, can improve the unusual judgement precision of unmanned aerial vehicle flight, thereby realize the effective protection to unmanned aerial vehicle organism 3.
Furthermore, the sensor 203 comprises an altitude sensor and an attitude sensor, and by arranging the altitude sensor and the attitude sensor, the controller 6 carries out double-sensor data fusion to realize accurate judgment, so that collision and falling are effectively prevented, and the risk of the fryer caused by propeller winding is avoided; a partition plate 206 is arranged between the sensor 203 and the parachute 204 to prevent mutual interference and influence on the function of the anti-falling device 2; the middle of the partition 206 is provided with a slotted hole which is convenient for circuit installation and reduces the weight of the partition, the four corners of the partition 206 are provided with small holes, and the pull rope is installed through the small holes.
Preferably, the lower parts of the two sides of the battery shell 1 are provided with clamping grooves 103, and the clamping grooves 103 are detachably connected with the unmanned aerial vehicle body 3, so that the battery core 101 in the battery shell 1 can be charged and the anti-falling device 2 can be maintained conveniently.
Furthermore, the connecting rings 7 are arranged at the middle parts of the two sides of the battery shell 1 close to the anti-falling device 2, and the battery shell 1 and the unmanned aerial vehicle body 3 are connected through the connecting rings 7 by using binding bands, so that the battery shell 1, the anti-falling device 2 and the unmanned aerial vehicle body 3 are firmly connected at the moment that the parachute 204 is popped up, and secondary protection is formed;
principle of use
When the unmanned aerial vehicle takes off, the GPS, the accelerometer, the altitude sensor and the attitude sensor jointly acquire the flight state of the unmanned aerial vehicle. Wherein GPS and accelerometer provide accurate location, the time standard of measuring the speed and the high accuracy, the weight catches unmanned aerial vehicle's abnormal conditions, altitude sensor and attitude sensor mainly detect unmanned aerial vehicle's appearance state, when the parameter of gathering is different in presetting the parameter, controller 6 controls automatically controlled fastener 205 explodes and pushes away movable clamp plate 202, make movable clamp plate 202 break away from mounting box 201, parachute 204 and stay cord are together pulled open and are extended, make unmanned aerial vehicle fall in-process and obtain the buffering protection, effectively reduce the economic loss that the unmanned aerial vehicle crash brought.
Test of use
In the capacity-increasing battery test, the modified capacity-increasing battery is installed on the Dajiang imperial 2 unmanned aerial vehicle to carry out the line inspection work simulation, and the battery runs stably in the multiple flight tests. And setting the minimum safe flight electric quantity, acquiring the flight time reaching the electric quantity, and comparing the flight time with the flight time data when the original battery reaches the same minimum electric quantity, wherein the flight time is prolonged by 44 minutes at the lowest and 51 minutes at the highest. The obtained compatibilized battery is safe and effective and has ideal application feasibility.
In the anti-falling device test, the rotor of the unmanned aerial vehicle is suspended, emergency is simulated, the unmanned aerial vehicle enters a prepared crash state, and the operation effect of the anti-falling device is detected. The test result shows many times, and this abnormal state is all normally caught to built-in electron detecting element, and the quick automatic start of anti-falling device has effectually prevented that unmanned aerial vehicle from falling.
Claims (9)
1. The unmanned aerial vehicle battery capacity-increasing anti-falling system is characterized by comprising a battery shell (1) and an anti-falling device (2) which are arranged above an unmanned aerial vehicle body (3), wherein two groups of battery cores (101) are arranged in the battery shell (1), one group of battery cores (101) are butted with a battery chip (102) through an industrial protocol, and the top of the battery shell (1) is provided with a key switch (4) which is electrically connected with the battery cores (101); still be equipped with electron detecting element (5) and controller (6) in battery case (1), supply power by electric core (101), electron detecting element (5) and anti-falling device (2) are connected to controller (6) electricity, and battery case (1) front portion is located in anti-falling device (2), and the junction of the two is equipped with the electrical contact, and electric core (101) are through the electrical contact to anti-falling device (2) power supply.
2. The unmanned aerial vehicle battery capacity-increasing and anti-falling system of claim 1, wherein the capacities of the two groups of cells (101) are not lower than 7000 milliamperes.
3. The unmanned aerial vehicle battery capacity-increasing anti-falling system according to claim 1, characterized in that, the anti-falling device (2) comprises a mounting box (201), a movable pressing plate (202), a sensor (203) and a parachute (204), the mounting box (201) is provided with an opening at the top end, the side wall is integrally formed with the side wall of the battery shell (1), the movable pressing plate (202) is detachably arranged at the top end of the mounting box (201) through an electric control clamping piece (205), the sensor (203) is arranged at the bottom of the mounting box (201) and is electrically connected with a controller (6) through the electric control clamping piece (205), and the parachute (204) is collected and placed in the mounting box (201) and is fixedly connected with the mounting box (201) through a pull rope.
4. The unmanned aerial vehicle battery capacity-increasing and falling-preventing system of claim 3, wherein the sensor (203) comprises an altitude sensor and an attitude sensor, and a partition plate (206) is arranged between the sensor (203) and the parachute (204).
5. The unmanned aerial vehicle battery capacity-increasing anti-falling system of claim 4, wherein a slotted hole is formed in the middle of the partition plate (206), small holes are formed in four corners of the partition plate, and the pull rope is installed through the small holes.
6. The unmanned aerial vehicle battery capacity-increasing and anti-falling system according to claim 1, wherein the electronic detection element (5) comprises a GPS and an accelerometer, the electronic detection element (5) and the controller (6) are arranged on the top of the battery shell (1), and a spacer is arranged between the electronic detection element and the battery cell (101).
7. The unmanned aerial vehicle battery capacity-increasing anti-falling system according to claim 1, wherein a clamping groove (103) is formed in the lower portion of each of two sides of the battery housing (1), and the battery housing is detachably connected with the unmanned aerial vehicle body (3) through the clamping groove (103).
8. The unmanned aerial vehicle battery capacity-increasing anti-falling system according to claim 1, wherein the middle parts of the two sides of the battery shell (1) are provided with connecting rings (7) near the anti-falling device (2), and the battery shell (1) and the unmanned aerial vehicle body (3) are connected through the connecting rings (7) by adopting a binding band.
9. The unmanned aerial vehicle battery capacity-increasing anti-falling system of claim 1, wherein the top end face of the battery shell (1) is flush with the anti-falling device (2), and the bottom end face exceeds the anti-falling device (2) and is matched with a groove at the top of the unmanned aerial vehicle body (3).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202111194833.2A CN113911371A (en) | 2021-10-14 | 2021-10-14 | Unmanned aerial vehicle battery increase-volume anti-falling system |
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| Application Number | Priority Date | Filing Date | Title |
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| CN202111194833.2A CN113911371A (en) | 2021-10-14 | 2021-10-14 | Unmanned aerial vehicle battery increase-volume anti-falling system |
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| CN113911371A true CN113911371A (en) | 2022-01-11 |
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