CN114122609B - Ultralow-temperature high-performance lithium iron phosphate power battery - Google Patents
Ultralow-temperature high-performance lithium iron phosphate power battery Download PDFInfo
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- CN114122609B CN114122609B CN202111411189.XA CN202111411189A CN114122609B CN 114122609 B CN114122609 B CN 114122609B CN 202111411189 A CN202111411189 A CN 202111411189A CN 114122609 B CN114122609 B CN 114122609B
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- GELKBWJHTRAYNV-UHFFFAOYSA-K lithium iron phosphate Chemical compound [Li+].[Fe+2].[O-]P([O-])([O-])=O GELKBWJHTRAYNV-UHFFFAOYSA-K 0.000 title claims abstract description 19
- 230000001681 protective effect Effects 0.000 claims abstract description 59
- 230000007246 mechanism Effects 0.000 claims abstract description 13
- 230000005540 biological transmission Effects 0.000 claims description 51
- 238000010438 heat treatment Methods 0.000 claims description 38
- 238000005192 partition Methods 0.000 claims description 9
- 238000007789 sealing Methods 0.000 claims description 6
- 230000003014 reinforcing effect Effects 0.000 claims description 3
- 230000001105 regulatory effect Effects 0.000 abstract 2
- 239000003792 electrolyte Substances 0.000 description 5
- 239000000463 material Substances 0.000 description 5
- 229910001416 lithium ion Inorganic materials 0.000 description 4
- 238000000034 method Methods 0.000 description 3
- 238000004806 packaging method and process Methods 0.000 description 3
- 239000007774 positive electrode material Substances 0.000 description 3
- HBBGRARXTFLTSG-UHFFFAOYSA-N Lithium ion Chemical compound [Li+] HBBGRARXTFLTSG-UHFFFAOYSA-N 0.000 description 2
- 238000009792 diffusion process Methods 0.000 description 2
- 239000002184 metal Substances 0.000 description 2
- 229910052751 metal Inorganic materials 0.000 description 2
- 230000005012 migration Effects 0.000 description 2
- 238000013508 migration Methods 0.000 description 2
- 239000002245 particle Substances 0.000 description 2
- 239000000843 powder Substances 0.000 description 2
- 238000007086 side reaction Methods 0.000 description 2
- WHXSMMKQMYFTQS-UHFFFAOYSA-N Lithium Chemical compound [Li] WHXSMMKQMYFTQS-UHFFFAOYSA-N 0.000 description 1
- 239000013543 active substance Substances 0.000 description 1
- 239000010405 anode material Substances 0.000 description 1
- 230000015572 biosynthetic process Effects 0.000 description 1
- 239000010406 cathode material Substances 0.000 description 1
- 239000011248 coating agent Substances 0.000 description 1
- 238000000576 coating method Methods 0.000 description 1
- 230000003247 decreasing effect Effects 0.000 description 1
- 238000009831 deintercalation Methods 0.000 description 1
- 238000010586 diagram Methods 0.000 description 1
- 230000000694 effects Effects 0.000 description 1
- 230000005611 electricity Effects 0.000 description 1
- 230000006872 improvement Effects 0.000 description 1
- 238000009434 installation Methods 0.000 description 1
- 239000007791 liquid phase Substances 0.000 description 1
- 229910052744 lithium Inorganic materials 0.000 description 1
- 230000008569 process Effects 0.000 description 1
- 230000002035 prolonged effect Effects 0.000 description 1
- 238000000926 separation method Methods 0.000 description 1
- 230000003245 working effect Effects 0.000 description 1
Classifications
-
- 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
-
- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01M—PROCESSES OR MEANS, e.g. BATTERIES, FOR THE DIRECT CONVERSION OF CHEMICAL ENERGY INTO ELECTRICAL ENERGY
- H01M10/00—Secondary cells; Manufacture thereof
- H01M10/60—Heating or cooling; Temperature control
- H01M10/61—Types of temperature control
- H01M10/615—Heating or keeping warm
-
- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01M—PROCESSES OR MEANS, e.g. BATTERIES, FOR THE DIRECT CONVERSION OF CHEMICAL ENERGY INTO ELECTRICAL ENERGY
- H01M10/00—Secondary cells; Manufacture thereof
- H01M10/60—Heating or cooling; Temperature control
- H01M10/62—Heating or cooling; Temperature control specially adapted for specific applications
-
- 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
-
- 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
-
- 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
-
- 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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- Chemical & Material Sciences (AREA)
- Chemical Kinetics & Catalysis (AREA)
- Electrochemistry (AREA)
- General Chemical & Material Sciences (AREA)
- Engineering & Computer Science (AREA)
- Manufacturing & Machinery (AREA)
- Aviation & Aerospace Engineering (AREA)
- Secondary Cells (AREA)
- Battery Mounting, Suspending (AREA)
Abstract
The invention discloses an ultralow temperature high-performance lithium iron phosphate power battery, which belongs to the field of unmanned aerial vehicle batteries, and comprises a battery body, wherein the battery body can be arranged in a battery compartment of an unmanned aerial vehicle, one end of the battery body is provided with an electric terminal electrically connected with an unmanned aerial vehicle, the outer side of the battery body is fixedly connected with at least one auxiliary regulating mechanism for providing auxiliary force between the battery body and the inner wall of the battery compartment to fix the battery body and heat the battery body, the auxiliary regulating mechanism comprises a protective shell fixed on the outer side of the battery body, and elastic telescopic arms are slidably connected on two sides of the protective shell.
Description
Technical Field
The invention relates to the field of unmanned aerial vehicle battery, in particular to an ultralow-temperature high-performance lithium iron phosphate power battery.
Background
The lithium iron phosphate battery disclosed in the application publication No. CN109119686A has the advantages that the low-temperature performance, the normal-temperature and high-temperature cycle performance of the lithium iron phosphate battery are improved, and the service life of the lithium iron phosphate battery is effectively prolonged;
The unmanned aerial vehicle flies in a high-altitude environment frequently, and the flying environment temperature is low, so that a lithium iron phosphate battery is often used, and is arranged in a battery compartment of the unmanned aerial vehicle and electrically connected with an electricity receiving end of the unmanned aerial vehicle, so that electric energy is provided for the unmanned aerial vehicle;
The existing unmanned aerial vehicle battery is usually fixed by using a bin cover of a battery bin, when the bin cover accidentally drops, the battery easily drops from the inside of the battery bin, so that the unmanned aerial vehicle is easy to crash because no kinetic energy can not fly, and the working performance of the battery at low temperature can not be effectively ensured only by the low-temperature resistance of the battery, therefore, the ultra-low-temperature high-performance lithium iron phosphate power battery is provided.
Disclosure of Invention
1. Technical problem to be solved
Aiming at the problems in the prior art, the invention aims to provide the ultralow-temperature high-performance lithium iron phosphate power battery, which can effectively reduce the probability that a battery body falls off from the inside of a battery compartment when an unmanned aerial vehicle flies, improve the stability of power supply of the unmanned aerial vehicle, reduce the probability of crash of the unmanned aerial vehicle and ensure the working performance of the battery body at low temperature.
2. Technical proposal
In order to solve the problems, the invention adopts the following technical scheme.
The ultralow-temperature high-performance lithium iron phosphate power battery comprises a battery body, wherein the battery body can be installed in a battery compartment of an unmanned aerial vehicle, and one end of the battery body is provided with an electric connection end electrically connected with the battery;
The battery body is fixedly connected with at least one auxiliary adjusting mechanism at the outer side of the battery body, and the auxiliary adjusting mechanism is used for providing an auxiliary force between the battery body and the inner wall of the battery bin to fix the battery body and heat the battery body;
The auxiliary adjusting mechanism comprises a protective shell fixed on the outer side of the battery body, elastic telescopic arms are connected to two sides of the protective shell in a sliding mode, elastic components which drive the elastic telescopic arms to slide towards the inside of the protective shell are further arranged on the inner walls of two sides of the protective shell, the elastic telescopic arms are symmetrically arranged, guide blocks are connected to the inside of the protective shell in a sliding mode, the sections of the guide blocks are isosceles quadrilaterals, waist lines on two sides are opposite to one end, located inside the protective shell, of the elastic telescopic arms, and power components which drive the guide blocks to slide are further arranged inside the protective shell.
Further, the elastic component comprises a fixed plate fixed on the outer side of the elastic telescopic arm, and a first return spring is fixedly connected between the fixed plate and the inner wall of the protective shell.
Further, one end of the elastic telescopic arm, which is close to the guide block, is fixedly connected with a moving wheel.
Further, one end of the elastic telescopic arm extending out of the protective shell is inclined towards one end far away from the power-receiving end, and an included angle between the elastic telescopic arm and the side wall of the protective shell is 30-60 degrees.
Further, one end of the elastic telescopic arm extending out of the protective shell is rotatably connected with a reinforcing plate.
Further, the power component comprises a first threaded rod which is rotationally connected inside the protective shell, the first threaded rod is in threaded connection with the guide block, and one end of the first threaded rod extends to the outer side of the protective shell and is fixedly connected with a first transmission cap head.
Further, the elastic telescopic arm stretches the sliding shell including sliding connection in protective housing one side, sliding connection has the sliding support in the inside of sliding shell, the one end that the sliding support kept away from the guide block extends to the outside of sliding shell, sliding shell's inside still is provided with second return spring and is used for adjusting the spring adjustment subassembly of sliding support elasticity degree.
Further, the spring adjusting component comprises a spring pressing plate which is connected inside the sliding shell in a sliding mode, the spring pressing plate is located at one end, far away from the sliding support, of the second return spring, a second threaded rod and a first bevel gear are further connected in a rotating mode inside the sliding shell, one end, far away from the guide block, of the second threaded rod is fixedly connected with a second bevel gear which is meshed with the first bevel gear, and the upper end of the first bevel gear extends to the outer side of the sliding shell to be fixedly connected with a second transmission cap head.
Further, the inside of the protective shell is fixedly connected with a partition plate, one end, far away from the guide block, of the inside of the protective shell is separated into a heating cavity through the partition plate, a heating bag is arranged in the heating cavity, a cutting assembly for cutting the heating bag is further arranged in the protective shell, and a sealing cover matched with the heating cavity is further assembled on the protective shell;
The cutting assembly comprises a sliding seat, a cutting tool, a transmission rail, a transmission plate and a transmission round rod, wherein the sliding seat slides on the separation plate, the cutting tool is fixedly connected to one side of the sliding seat, which is positioned in the heating cavity, and is used for cutting the heating bag, the transmission rail is fixedly connected to one side of the sliding seat, which is positioned outside the heating cavity, the transmission plate is fixed to one end, which is close to the transmission rail, of the first threaded rod, the transmission plate is far away from the transmission round rod, and the transmission round rod is in sliding connection with the transmission rail.
3. Advantageous effects
Compared with the prior art, the invention has the advantages that:
(1) This scheme is fixed battery body through setting up supplementary adjustment mechanism and providing an auxiliary force between battery body and battery compartment inner wall, can effectually reduce the probability that battery body drops from the battery compartment is inside when unmanned aerial vehicle flies to reduce unmanned aerial vehicle's probability of air crash.
(2) This scheme can let the electric end that connects and unmanned aerial vehicle's electric end closely laminate through setting up the flexible arm of elasticity, promotes unmanned aerial vehicle's stability.
(3) This scheme can effectually heat battery body through setting up the heating package, guarantees the working property of battery body under the low temperature.
Drawings
FIG. 1 is a schematic view of one end of the present invention;
FIG. 2 is a schematic diagram of another embodiment of the present invention;
FIG. 3 is a schematic view of the auxiliary adjusting mechanism of the present invention;
FIG. 4 is an enlarged view of the invention at A in FIG. 3;
FIG. 5 is a schematic view of the cross-sectional structure of the elastic telescoping arm of the present invention;
FIG. 6 is a schematic view of the spring adjustment assembly of the present invention;
Fig. 7 is an exploded view of the present invention at B in fig. 3.
The reference numerals in the figures illustrate:
1. A battery body; 2. an electrical connection terminal; 3. a protective housing; 4. a sliding housing; 5. a sliding support; 6. a reinforcing plate; 7. a first drive cap head; 8. a first threaded rod; 9. a guide block; 10. a moving wheel; 11. a fixing plate; 12. a first return spring; 13. a second drive cap head; 14. blanking holes; 15. a second return spring; 16. a spring pressing plate; 17. a second threaded rod; 18. a first bevel gear; 19. a second bevel gear; 20. sealing cover; 21. a heating chamber; 22. heating the bag; 23. a sliding seat; 24. a cutting tool; 25. a transmission rail; 26. a drive plate; 27. a partition plate; 28. and (5) driving the round rod.
Detailed Description
The technical solutions in the embodiments of the present invention will be clearly and completely described below with reference to the accompanying drawings in the embodiments of the present invention; it is apparent that the described embodiments are only some embodiments of the present invention, not all embodiments, and that all other embodiments obtained by persons of ordinary skill in the art without making creative efforts based on the embodiments in the present invention are within the protection scope of the present invention.
Referring to fig. 1-7, an ultralow temperature high performance lithium iron phosphate power battery comprises a battery body 1, wherein the battery body 1 can be installed in a battery compartment of an unmanned aerial vehicle, and one end of the battery body 1 is provided with an electric connection end 2 electrically connected with the unmanned aerial vehicle;
Here, the battery body 1 improves its performance in a low-temperature environment by:
1. The ionic diffusion performance of the positive electrode material at low temperature is improved by adopting a method of surface coating the active substance body by using a material with excellent conductivity, so that the interface conductivity of the positive electrode material is improved, the interface impedance is reduced, the side reaction of the positive electrode material and electrolyte is reduced, and the material structure is stabilized;
2. the particle size of the material is reduced, the Li+ migration path is shortened, and the specific surface area of the material is increased by the method, so that side reactions with electrolyte are increased. The discharge capacity of the material increases with decreasing particle size at-20 ℃ because the diffusion distance of lithium ions is shortened, making the process of deintercalation of lithium easier;
3. Improving electrolyte: the electrolyte is used as an important component of the lithium ion battery, not only determines the migration rate of Li+ in a liquid phase, but also participates in SEI film formation, and plays a critical role in SEI film performance. The viscosity of the electrolyte is increased, the conductivity is reduced, the SEI film resistance is increased, the compatibility with anode and cathode materials is poor, and the energy density, the cycle performance and the like of the battery are greatly deteriorated;
Referring to fig. 1-3, at least one auxiliary adjusting mechanism is fixedly connected to the outer side of the battery body 1, for providing an auxiliary force between the battery body 1 and the inner wall of the battery compartment to fix the battery body 1 and heat the battery body 1.
Here, the auxiliary adjusting mechanism comprises a protective shell 3 fixed on the outer side of the battery body 1, elastic telescopic arms are slidably connected to two sides of the protective shell 3, elastic components for driving the elastic telescopic arms to slide towards the interior of the protective shell 3 are further arranged on the inner walls of two sides of the protective shell 3, the two elastic telescopic arms are symmetrically arranged, a guide block 9 is slidably connected to the interior of the protective shell 3, the section of the guide block 9 is isosceles quadrilateral, waist lines on two sides are opposite to one end of the elastic telescopic arms, located in the protective shell 3, and a power component for driving the guide block 9 to slide is further arranged in the protective shell 3;
When installing battery body 1 in the inside of battery compartment, drive guide block 9 through power component and remove, when guide block 9 removed, the lateral wall of guide block 9 can promote the flexible arm of elasticity, lets the flexible arm of elasticity stretch out the inside of protective housing 3, contacts with the inner wall of battery compartment to fix battery body 1.
Referring to fig. 4, the elastic component includes a fixing plate 11 fixed on the outer side of the elastic telescopic arm, and a first return spring 12 fixedly connected between the fixing plate 11 and the inner wall of the protective housing 3, where when the guide block 9 no longer pushes the elastic telescopic arm, the first return spring 12 pushes the fixing plate 11, so that the elastic telescopic arm slides towards the inside of the protective housing 3.
In order to reduce the friction between the elastic telescopic arm and the guide block 9, a movable wheel 10 is fixedly connected to the end of the elastic telescopic arm near the guide block 9, as shown in fig. 3 and 4.
Referring to fig. 3, in order to make the joint between the power connection end 2 and the power connection portion of the unmanned aerial vehicle more tightly, one end of the elastic telescopic arm extending out of the protective housing 3 is inclined towards one end far away from the power connection end 2, and an included angle between the elastic telescopic arm and a side wall of the protective housing 3 is 30 ° to 60 °.
And, in order to increase the area of contact between flexible arm and the unmanned aerial vehicle storehouse that charges, the flexible arm of elasticity stretches out the one end rotation of protecting sheathing 3 and is connected with gusset plate 6.
Referring to fig. 3 again, the power assembly includes a first threaded rod 8 rotatably connected inside the protective housing 3, the first threaded rod 8 is in threaded connection with the guide block 9, one end of the first threaded rod 8 extends to the outer side of the protective housing 3 and is fixedly connected with a first driving cap 7, and the first threaded rod 8 is driven to move by rotating the first driving cap 7 through a wrench, because the first threaded rod 8 is in threaded connection with the guide block 9, the guide block 9 is driven to move when the first threaded rod 8 rotates.
Referring to fig. 3-5, the elastic telescopic arm includes a sliding shell 4 slidably connected to one side of the protective housing 3, a sliding support 5 slidably connected to the inside of the sliding shell 4, one end of the sliding support 5 away from the guide block 9 extends to the outside of the sliding shell 4, and a second return spring 15 and a spring adjusting assembly for adjusting the tightness of the sliding support 5 are further disposed inside the sliding shell 4;
Referring to fig. 5 and 6, the spring adjusting assembly includes a spring pressing plate 16 slidably connected in the sliding shell 4, the spring pressing plate 16 is located at one end of the second return spring 15 away from the sliding bracket 5, the sliding shell 4 is further rotatably connected with a second threaded rod 17 and a first bevel gear 18, one end of the second threaded rod 17 away from the guide block 9 is fixedly connected with a second bevel gear 19 engaged with the first bevel gear 18, the upper end of the first bevel gear 18 extends to the outer side of the sliding shell 4 and is fixedly connected with a second transmission cap head 13, in order to reduce the thickness of the elastic telescopic arm and avoid the second transmission cap head 13 from affecting the sliding of the elastic telescopic arm, a blanking hole 14 adapted to the second transmission cap head 13 is formed in the sliding shell 4, the second bevel gear 18 is driven to rotate by rotating the second transmission cap head 13, because the first bevel gear 18 and the second bevel gear 19 are engaged and connected, the second threaded rod 17 and the spring pressing plate 16 are engaged and connected, when the second bevel gear 18 rotates, the second pressing plate 16 is driven to slide, and the spring pressing plate 16 is driven to slide by the second bevel gear 18, and the second spring pressing plate is adjusted.
Further, referring to fig. 2, 3 and 7, a partition plate 27 is fixedly connected to the inside of the protective housing 3, one end, far away from the guide block 9, of the inside of the protective housing 3 is separated into a heating cavity 21 by the partition plate 27, a heating bag 22 is installed in the heating cavity 21, a cutting assembly for cutting the heating bag 22 is further arranged in the protective housing 3, and a sealing cover 20 matched with the heating cavity 21 is further arranged on the protective housing 3;
Wherein, the heating bag 22 comprises a packaging bag and metal powder filled in the packaging bag, and when the packaging bag is torn, the metal powder contacts with moisture in the air to form a heating body to heat the battery body 1;
herein, referring to fig. 3 and 7, the cutting assembly includes a sliding seat 23, a cutting tool 24, a transmission rail 25, a transmission plate 26 and a transmission round rod 28, wherein the sliding seat 23 slides on the partition plate 27, the cutting tool 24 is fixedly connected to one side of the sliding seat 23 located inside the heating cavity 21 for cutting the heating bag 22, the transmission rail 25 is fixedly connected to one side of the sliding seat 23 located outside the heating cavity 21, the transmission plate 26 is fixed to one end of the first threaded rod 8 close to the transmission rail 25, one end of the transmission plate 26 far away from the first threaded rod 8 is fixedly connected with the transmission round rod 28, and the transmission round rod 28 is slidably connected with the transmission rail 25;
when the battery body 1 needs to be heated, the heating bag 22 is placed in the heating cavity 21, then the heating cavity 21 is sealed through the sealing cover 20, the first threaded rod 8 is rotated again, the transmission plate 26 is driven to rotate together when the first threaded rod 8 rotates, the transmission plate 26 can drive the transmission rail 25 to horizontally slide through the transmission round rod 28 when rotating, the cutting tool 24 can be driven to slide together through the sliding seat 23 when the transmission rail 25 slides, and the heating bag 22 can be cut when the cutting tool 24 slides.
When in use: the first bevel gear 18 is driven to rotate by rotating the second transmission cap head 13, because the first bevel gear 18 is in meshed connection with the second bevel gear 19, the first bevel gear 18 drives the second threaded rod 17 to rotate together through the second bevel gear 19 when rotating, and because the second threaded rod 17 is in threaded connection with the spring pressing plate 16, the spring pressing plate 16 is driven to slide when rotating, and the tightness degree of the second return spring 15 can be adjusted when the spring pressing plate 16 slides;
Then the battery body 1 is installed into a battery compartment of the unmanned aerial vehicle, and after the installation is completed, the first transmission cap head 7 is rotated to drive the first threaded rod 8 to move, because the first threaded rod 8 is in threaded connection with the guide block 9, the guide block 9 is driven to move when the first threaded rod 8 rotates, and when the guide block 9 moves, the side wall of the guide block 9 pushes the elastic telescopic arm to enable the elastic telescopic arm to extend out of the protective shell 3 and contact with the inner wall of the battery compartment, so that the battery body 1 is fixed;
When the battery body 1 needs to be heated, the heating bag 22 is placed in the heating cavity 21, then the heating cavity 21 is sealed through the sealing cover 20, the first threaded rod 8 is rotated, the transmission plate 26 is driven to rotate together when the first threaded rod 8 rotates, the transmission plate 26 drives the transmission rail 25 to horizontally slide through the transmission round rod 28 when rotating, the cutting tool 24 is driven to slide together through the sliding seat 23 when the transmission rail 25 slides, and the heating bag 22 is cut when the cutting tool 24 slides;
In summary, the auxiliary adjusting mechanism is arranged to provide an auxiliary force between the battery body 1 and the inner wall of the battery compartment to fix the battery body 1, so that the probability that the battery body 1 falls off from the inner part of the battery compartment when the unmanned aerial vehicle flies can be effectively reduced, the probability of the unmanned aerial vehicle falling down is reduced, the power receiving end 2 can be tightly attached to the power receiving end of the unmanned aerial vehicle through the elastic telescopic arm, the stability of the unmanned aerial vehicle is improved, the battery body 1 can be effectively heated through the heating bag 22, and the working performance of the battery body 1 at low temperature is ensured.
The above description is only of the preferred embodiments of the present invention; the scope of the invention is not limited in this respect. Any person skilled in the art, within the technical scope of the present disclosure, may apply to the present invention, and the technical solution and the improvement thereof are all covered by the protection scope of the present invention.
Claims (7)
1. An ultralow-temperature high-performance lithium iron phosphate power battery comprises a battery body (1), and is characterized in that: the battery body (1) can be arranged in the unmanned aerial vehicle battery compartment, and one end of the battery body (1) is provided with an electric connection end (2) electrically connected with the unmanned aerial vehicle;
The battery pack is characterized in that the outer side of the battery body (1) is fixedly connected with at least one auxiliary adjusting mechanism, and the auxiliary adjusting mechanism is used for providing an auxiliary force between the battery body (1) and the inner wall of the battery bin to fix the battery body (1) and heat the battery body (1);
The auxiliary adjusting mechanism comprises a protective shell (3) fixed on the outer side of a battery body (1), elastic telescopic arms are slidably connected to two sides of the protective shell (3), elastic components for driving the elastic telescopic arms to slide towards the inside of the protective shell (3) are further arranged on the inner walls of two sides of the protective shell (3), the two elastic telescopic arms are symmetrically arranged, guide blocks (9) are slidably connected to the inside of the protective shell (3), the section of each guide block (9) is isosceles quadrangle, waist lines on two sides are opposite to one end of the elastic telescopic arms, located inside the protective shell (3), and a power component for driving the guide blocks (9) to slide is further arranged inside the protective shell (3);
The elastic telescopic arm comprises a sliding shell (4) which is connected to one side of the protective shell (3) in a sliding manner, a sliding support (5) is connected to the inside of the sliding shell (4) in a sliding manner, one end, away from the guide block (9), of the sliding support (5) extends to the outer side of the sliding shell (4), and a second return spring (15) and a spring adjusting assembly for adjusting the tightness degree of the sliding support (5) are further arranged in the sliding shell (4);
the elastic component is including fixing fixed plate (11) in the flexible arm outside, fixedly connected with first return spring (12) between fixed plate (11) and protective housing (3) inner wall.
2. The ultra-low temperature high performance lithium iron phosphate power battery according to claim 1, wherein: one end of the elastic telescopic arm, which is close to the guide block (9), is fixedly connected with a moving wheel (10).
3. The ultra-low temperature high performance lithium iron phosphate power battery according to claim 1, wherein: the end of the elastic telescopic arm, which extends out of the protective shell (3), is inclined towards the end far away from the power connection end (2), and an included angle between the elastic telescopic arm and the side wall of the protective shell (3) is 30-60 degrees.
4. The ultra-low temperature high performance lithium iron phosphate power battery according to claim 3, wherein: one end of the elastic telescopic arm extending out of the protective shell (3) is rotatably connected with a reinforcing plate (6).
5. The ultra-low temperature high performance lithium iron phosphate power battery according to claim 1, wherein: the power assembly comprises a first threaded rod (8) which is rotationally connected inside the protective casing (3), the first threaded rod (8) is in threaded connection with a guide block (9), and one end of the first threaded rod (8) extends to the outer side of the protective casing (3) and is fixedly connected with a first transmission cap head (7).
6. The ultra-low temperature high performance lithium iron phosphate power battery according to claim 1, wherein: the spring adjusting assembly comprises a spring pressing plate (16) which is slidably connected inside a sliding shell (4), the spring pressing plate (16) is located at one end of a second return spring (15) away from the sliding support (5), a second threaded rod (17) and a first bevel gear (18) are further rotatably connected inside the sliding shell (4), one end of the second threaded rod (17) away from a guide block (9) is fixedly connected with a second bevel gear (19) which is meshed with the first bevel gear (18), and the upper end of the first bevel gear (18) extends to the outer side of the sliding shell (4) to be fixedly connected with a second transmission cap head (13).
7. The ultra-low temperature high performance lithium iron phosphate power battery according to claim 4, wherein: the inside of the protective shell (3) is fixedly connected with a partition plate (27), one end, far away from the guide block (9), of the inside of the protective shell (3) is separated into a heating cavity (21) through the partition plate (27), a heating bag (22) is arranged in the heating cavity (21), a cutting assembly for cutting the heating bag (22) is further arranged in the protective shell (3), and a sealing cover (20) matched with the heating cavity (21) is further arranged on the protective shell (3);
The cutting assembly comprises a sliding seat (23), a cutting tool (24), a transmission rail (25), a transmission plate (26) and a transmission round rod (28), wherein the sliding seat (23) slides on a partition plate (27), the cutting tool (24) is fixedly connected to one side of the inside of the heating cavity (21) and used for cutting the heating bag (22), the transmission rail (25) is fixedly connected to one side of the sliding seat (23) located outside of the heating cavity (21), the transmission plate (26) is fixed to one end, close to the transmission rail (25), of a first threaded rod (8), one end, far away from the first threaded rod (8), of the transmission plate (26) is fixedly connected with the transmission round rod (28), and the transmission round rod (28) and the transmission rail (25) are in sliding connection.
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| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| WO2018119739A1 (en) * | 2016-12-28 | 2018-07-05 | 深圳市大疆创新科技有限公司 | Battery fixing mechanism, frame of unmanned aerial vehicle, and battery management device |
| CN212461860U (en) * | 2020-06-09 | 2021-02-02 | 深圳市华特能科技有限公司 | Low-temperature rechargeable lithium battery pack |
| CN213816308U (en) * | 2020-11-30 | 2021-07-27 | 贵州万峰博亿能科技有限公司 | Improved lithium iron phosphate lithium ion power battery structure |
| CN214776601U (en) * | 2020-12-28 | 2021-11-19 | 江苏星睿航空科技有限公司 | Battery insulation construction for unmanned aerial vehicle takes photo by plane |
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| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| WO2018119739A1 (en) * | 2016-12-28 | 2018-07-05 | 深圳市大疆创新科技有限公司 | Battery fixing mechanism, frame of unmanned aerial vehicle, and battery management device |
| CN212461860U (en) * | 2020-06-09 | 2021-02-02 | 深圳市华特能科技有限公司 | Low-temperature rechargeable lithium battery pack |
| CN213816308U (en) * | 2020-11-30 | 2021-07-27 | 贵州万峰博亿能科技有限公司 | Improved lithium iron phosphate lithium ion power battery structure |
| CN214776601U (en) * | 2020-12-28 | 2021-11-19 | 江苏星睿航空科技有限公司 | Battery insulation construction for unmanned aerial vehicle takes photo by plane |
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