CN118712510B - Lithium iron phosphate battery positive electrode and lithium ion battery pack thereof - Google Patents
Lithium iron phosphate battery positive electrode and lithium ion battery pack thereof Download PDFInfo
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- CN118712510B CN118712510B CN202410882302.XA CN202410882302A CN118712510B CN 118712510 B CN118712510 B CN 118712510B CN 202410882302 A CN202410882302 A CN 202410882302A CN 118712510 B CN118712510 B CN 118712510B
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- fixedly connected
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- battery
- voltage regulating
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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 20
- HBBGRARXTFLTSG-UHFFFAOYSA-N Lithium ion Chemical compound [Li+] HBBGRARXTFLTSG-UHFFFAOYSA-N 0.000 title abstract description 11
- 229910001416 lithium ion Inorganic materials 0.000 title abstract description 11
- 230000001105 regulatory effect Effects 0.000 claims abstract description 47
- 230000007246 mechanism Effects 0.000 claims abstract description 43
- 239000006258 conductive agent Substances 0.000 claims abstract description 11
- 230000004888 barrier function Effects 0.000 claims abstract description 8
- 210000000078 claw Anatomy 0.000 claims description 21
- 230000017525 heat dissipation Effects 0.000 claims description 18
- 239000004698 Polyethylene Substances 0.000 claims description 10
- -1 polyethylene Polymers 0.000 claims description 10
- 229920000573 polyethylene Polymers 0.000 claims description 10
- 239000007774 positive electrode material Substances 0.000 claims description 9
- 230000008878 coupling Effects 0.000 claims description 5
- 238000010168 coupling process Methods 0.000 claims description 5
- 238000005859 coupling reaction Methods 0.000 claims description 5
- 230000001681 protective effect Effects 0.000 claims 3
- 230000037431 insertion Effects 0.000 claims 2
- 238000003780 insertion Methods 0.000 claims 2
- 230000000694 effects Effects 0.000 abstract description 6
- 230000001276 controlling effect Effects 0.000 abstract description 3
- 239000000463 material Substances 0.000 abstract 1
- 238000001125 extrusion Methods 0.000 description 7
- 238000000034 method Methods 0.000 description 5
- 230000008569 process Effects 0.000 description 5
- 230000000903 blocking effect Effects 0.000 description 4
- 238000010586 diagram Methods 0.000 description 4
- 230000005855 radiation Effects 0.000 description 4
- 230000009286 beneficial effect Effects 0.000 description 3
- 239000012535 impurity Substances 0.000 description 3
- 239000012528 membrane Substances 0.000 description 3
- 239000011148 porous material Substances 0.000 description 3
- 239000003792 electrolyte Substances 0.000 description 2
- 230000004048 modification Effects 0.000 description 2
- 238000012986 modification Methods 0.000 description 2
- OKTJSMMVPCPJKN-UHFFFAOYSA-N Carbon Chemical compound [C] OKTJSMMVPCPJKN-UHFFFAOYSA-N 0.000 description 1
- 229910010707 LiFePO 4 Inorganic materials 0.000 description 1
- 239000000853 adhesive Substances 0.000 description 1
- 239000010405 anode material Substances 0.000 description 1
- 230000005540 biological transmission Effects 0.000 description 1
- 229910052799 carbon Inorganic materials 0.000 description 1
- 239000003575 carbonaceous material Substances 0.000 description 1
- 230000008859 change Effects 0.000 description 1
- 238000006243 chemical reaction Methods 0.000 description 1
- 230000006835 compression Effects 0.000 description 1
- 238000007906 compression Methods 0.000 description 1
- 238000009792 diffusion process Methods 0.000 description 1
- 238000007599 discharging Methods 0.000 description 1
- 238000005516 engineering process Methods 0.000 description 1
- 238000001914 filtration Methods 0.000 description 1
- 230000005484 gravity Effects 0.000 description 1
- 230000020169 heat generation Effects 0.000 description 1
- 150000002500 ions Chemical class 0.000 description 1
- 230000003446 memory effect Effects 0.000 description 1
- 239000007773 negative electrode material Substances 0.000 description 1
- 230000002035 prolonged effect Effects 0.000 description 1
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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
- H01M10/00—Secondary cells; Manufacture thereof
- H01M10/05—Accumulators with non-aqueous electrolyte
- H01M10/058—Construction or manufacture
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- H—ELECTRICITY
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- H01M—PROCESSES OR MEANS, e.g. BATTERIES, FOR THE DIRECT CONVERSION OF CHEMICAL ENERGY INTO ELECTRICAL ENERGY
- H01M10/00—Secondary cells; Manufacture thereof
- H01M10/05—Accumulators with non-aqueous electrolyte
- H01M10/052—Li-accumulators
- H01M10/0525—Rocking-chair batteries, i.e. batteries with lithium insertion or intercalation in both electrodes; Lithium-ion batteries
-
- 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
- H01M10/42—Methods or arrangements for servicing or maintenance of secondary cells or secondary half-cells
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- H01M10/00—Secondary cells; Manufacture thereof
- H01M10/60—Heating or cooling; Temperature control
- H01M10/61—Types of temperature control
- H01M10/613—Cooling or keeping cold
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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
- H01M10/00—Secondary cells; Manufacture thereof
- H01M10/60—Heating or cooling; Temperature control
- H01M10/64—Heating or cooling; Temperature control characterised by the shape of the cells
- H01M10/647—Prismatic or flat cells, e.g. pouch 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
- H01M10/00—Secondary cells; Manufacture thereof
- H01M10/60—Heating or cooling; Temperature control
- H01M10/65—Means for temperature control structurally associated with the cells
- H01M10/655—Solid structures for heat exchange or heat conduction
- H01M10/6556—Solid parts with flow channel passages or pipes for heat exchange
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- H—ELECTRICITY
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- 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
- H01M10/65—Means for temperature control structurally associated with the cells
- H01M10/656—Means for temperature control structurally associated with the cells characterised by the type of heat-exchange fluid
- H01M10/6561—Gases
- H01M10/6563—Gases with forced flow, e.g. by blowers
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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
- H01M10/00—Secondary cells; Manufacture thereof
- H01M10/60—Heating or cooling; Temperature control
- H01M10/65—Means for temperature control structurally associated with the cells
- H01M10/656—Means for temperature control structurally associated with the cells characterised by the type of heat-exchange fluid
- H01M10/6561—Gases
- H01M10/6566—Means within the gas flow to guide the flow around one or more cells, e.g. manifolds, baffles or other barriers
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- H—ELECTRICITY
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- H01M—PROCESSES OR MEANS, e.g. BATTERIES, FOR THE DIRECT CONVERSION OF CHEMICAL ENERGY INTO ELECTRICAL ENERGY
- H01M4/00—Electrodes
- H01M4/02—Electrodes composed of, or comprising, active material
- H01M4/13—Electrodes for accumulators with non-aqueous electrolyte, e.g. for lithium-accumulators; Processes of manufacture thereof
- H01M4/136—Electrodes based on inorganic compounds other than oxides or hydroxides, e.g. sulfides, selenides, tellurides, halogenides or LiCoFy
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- 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
- H01M50/207—Racks, modules or packs for multiple batteries or multiple cells characterised by their shape
- H01M50/209—Racks, modules or packs for multiple batteries or multiple cells characterised by their shape adapted for prismatic or rectangular cells
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- 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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- 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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- 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
- H01M50/289—Mountings; Secondary casings or frames; Racks, modules or packs; Suspension devices; Shock absorbers; Transport or carrying devices; Holders characterised by spacing elements or positioning means within frames, racks or packs
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- 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
- H01M50/289—Mountings; Secondary casings or frames; Racks, modules or packs; Suspension devices; Shock absorbers; Transport or carrying devices; Holders characterised by spacing elements or positioning means within frames, racks or packs
- H01M50/291—Mountings; Secondary casings or frames; Racks, modules or packs; Suspension devices; Shock absorbers; Transport or carrying devices; Holders characterised by spacing elements or positioning means within frames, racks or packs characterised by their shape
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- 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
- H01M50/296—Mountings; Secondary casings or frames; Racks, modules or packs; Suspension devices; Shock absorbers; Transport or carrying devices; Holders characterised by terminals of battery packs
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- 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
- H01M50/298—Mountings; Secondary casings or frames; Racks, modules or packs; Suspension devices; Shock absorbers; Transport or carrying devices; Holders characterised by the wiring of battery packs
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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
- H01M50/50—Current conducting connections for cells or batteries
- H01M50/502—Interconnectors for connecting terminals of adjacent batteries; Interconnectors for connecting cells outside a battery casing
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- 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
- H01M50/50—Current conducting connections for cells or batteries
- H01M50/543—Terminals
- H01M50/552—Terminals characterised by their shape
- H01M50/553—Terminals adapted for prismatic, pouch or rectangular cells
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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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Abstract
The invention relates to the field of lithium iron phosphate batteries, in particular to a lithium iron phosphate battery positive electrode and a lithium ion battery pack thereof, which comprises a box shell, wherein the box shell is used for placing and protecting batteries, a bottom frame is fixedly connected to the bottom of the box shell, a voltage regulating mechanism is used for regulating and controlling the volume of the positive electrode of the batteries, the voltage regulating mechanism is arranged in the box shell, the voltage regulating mechanism comprises a voltage regulating component, the voltage regulating component is arranged in the box shell, a wire is fixedly connected to the top of the voltage regulating component, and a line concentration box is inserted into one end of the wire, which is far away from the voltage regulating component. This lithium iron phosphate battery positive pole and lithium ion battery group passes round hole and pressurized tube in proper order through the conveyer pipe and extrudees the barrier film, and the barrier film will be broken at this moment, then goes into the inside conductive agent of glassware and will carry each layer of positive pole material through the conveyer pipe to play the effect that increases positive pole conductive properties, promotes charge-discharge efficiency.
Description
Technical Field
The invention relates to the technical field of lithium iron phosphate batteries, in particular to a lithium iron phosphate battery positive electrode and a lithium ion battery pack thereof.
Background
The lithium iron phosphate battery is a lithium ion battery which uses lithium iron phosphate (LiFePO 4) as a positive electrode material and carbon as a negative electrode material, wherein the rated voltage of a single battery is 3.2V, and the charging cut-off voltage is 3.6V-3.65V.
The lithium iron phosphate battery has the advantages of high working voltage, high energy density, long cycle life, good safety performance, small self-discharge rate and no memory effect.
The existing lithium iron phosphate battery has the following problems that 1, although the high-temperature safety is good and the ion diffusion rate of the positive electrode material is beneficial, the performance and the service life of the lithium iron phosphate battery are still affected to a certain extent when the lithium iron phosphate battery works for a long time in a high-temperature environment, 2, after the whole battery is charged and discharged for a long time, part of the conductive agent in the positive electrode material is lost, and the charging efficiency of the whole battery is reduced and the charging period is prolonged due to the loss of the conductive agent.
Disclosure of Invention
The invention provides a lithium iron phosphate battery positive electrode and a lithium ion battery pack thereof, which are used for solving the problems in the background technology.
In order to achieve the aim, the invention provides the technical scheme that the lithium iron phosphate battery anode comprises a box shell, wherein the box shell is used for placing and protecting batteries, and the bottom of the box shell is fixedly connected with a bottom frame;
The voltage regulating mechanism is used for regulating and controlling the volume of the positive electrode of the battery;
The utility model discloses a voltage regulating mechanism, including the box, voltage regulating mechanism sets up the inside at the box, voltage regulating assembly's top fixedly connected with wire, the one end that voltage regulating assembly was kept away from to the wire is pegged graft there is the line concentration box, the top fixedly connected with line outlet head of line concentration box, line concentration box fixedly connected with is at the top of box.
Preferably, the voltage regulating assembly comprises a battery shell, the battery shell is arranged in the box shell, the top of the battery shell is fixedly connected with a positive electrode lug and a negative electrode lug respectively, the positive electrode lug and the negative electrode lug are symmetrically connected to the top of the battery shell, and the tops of the positive electrode lug and the negative electrode lug are fixedly connected with a lead.
Preferably, the inside of battery case is fixedly connected with electric current collector, SEI membrane and polyethylene diaphragm respectively, and wherein the polyethylene diaphragm sets up the inside central part of battery case, SEI membrane sets up the position between electric current collector and polyethylene diaphragm, be provided with the pressure regulating piece between SEI membrane and the electric current collector, wherein the pressure regulating piece symmetry sets up the both sides at the battery case.
Preferably, the pressure regulating piece comprises a bevel board, the bevel board is inserted at the top of the battery shell and extends to the inside, a round hole is formed in the surface of the bevel board, a pressure pipe is extruded and adapted to the outer side of the bevel board, a blocking film is fixedly connected to the inside of the pressure pipe, one end of the pressure pipe, which is far away from the bevel board, is fixedly connected with a movable inner plate, and the movable inner plate is slidably adapted to the inside of the battery shell.
Preferably, one end of the inclined plate, which is far away from the compression pipe, is slidably matched with a conveying pipe, one end of the conveying pipe, which is far away from the inclined plate, is fixedly connected with a feeder, one side, which is close to the battery shell, of the feeder is fixedly connected with a spring, one end, which is far away from the feeder, of the spring is fixedly connected with the outer side of the battery shell, and a conductive agent is placed in the feeder.
A lithium ion battery pack comprising:
the limiting mechanism is used for limiting and fixing the battery;
A heat radiation mechanism for radiating heat inside the battery;
the limiting mechanisms are symmetrically connected to two sides of the box shell, and the heat dissipation mechanisms are fixedly arranged at the bottom of the box shell;
The limiting mechanism comprises a bottom pressing block, the bottom pressing block is fixedly connected to the bottom of the battery shell, a protection seat is arranged on the side of the bottom pressing block, the protection seat is fixedly connected to the bottom of the inner cavity of the case, an inclined surface rod is inserted into the protection seat, one end of the inclined surface rod is in extrusion fit with the bottom pressing block, one end of the inclined surface rod, far away from the bottom pressing block, of the inclined surface rod is fixedly connected with a limiting claw, the part, connected with the limiting claw, of the inclined surface rod is flexible, a hinge seat is rotationally connected to the central part of the limiting claw, the hinge seat is fixedly connected to the outer side of the case, and the top end of the limiting claw is in extrusion fit with the outer side of the battery shell.
Preferably, the heat dissipation mechanism comprises a conical tube, an inner support is fixedly connected to the top of the inner cavity of the conical tube, a swivel is rotatably connected to the inner portion of the inner support, a filter screen is fixedly connected to the bottom of the swivel, an elastic sticking ring is fixedly connected to the outer side of the filter screen, and one side, far away from the filter screen, of the elastic sticking ring is extruded and matched in the conical tube.
Preferably, the inside central part fixedly connected with radiator unit of filter screen, radiator unit fixed connection is in the bottom of case, the inboard fixedly connected with sleeve pipe of filter screen, the sleeve pipe is kept away from the one end grafting of filter screen and is had the inserted bar, the inserted bar is kept away from sheathed tube one end fixedly connected with universal seat, universal seat's bottom fixedly connected with inlays the closure plate, inlay the outside slip fit who blocks the closure plate has the board, cup joint board fixed connection is in the bottom of conical tube, cup joint the equal fixed tube in bottom of board and conical tube and be connected with the collection frame.
Preferably, the heat radiation component comprises a double connecting pipe, the double connecting pipe is fixedly connected to the bottom of the box shell, the outer end of the double connecting pipe is fixedly connected with the conical pipe, the inner side of the double connecting pipe is fixedly connected with a frame, the center part of the frame is fixedly connected with a motor, the output end of the motor is connected with a fan through a coupling, the output end of the motor is close to one end of the fan, the friction block is fixedly connected with an inner shaft in an extrusion fit manner, the inner shaft is arranged inside the output shaft of the motor, the outer end face of the inner shaft is fixedly connected with a reset spring, and one end of the reset spring, far away from the inner shaft, is fixedly connected with the inner side of the filter screen.
Preferably, one end of the double-connecting pipe, which is far away from the conical pipe, is fixedly connected with a flow pipe, the top of the flow pipe is fixedly connected with an air outlet pore plate, square holes are formed in the top of the air outlet pore plate, and the top of the inner cavity of the air outlet pore plate is fixedly connected with a first drainage plate and a second drainage plate respectively.
Compared with the prior art, the invention has the beneficial effects that:
1. The part connected with the limiting claw through the inclined plane rod is flexible, so that the rotating limiting claw can enable the top end of the rotating limiting claw to penetrate through the box shell and extrude and limit the outer side of the battery shell, and the limiting and fixing effects of the battery shell in the process of putting the battery shell are achieved.
2. The universal seat fixedly connected to the other end of the inserted link is connected with the embedded board, so that the universal seat can be inserted into the sleeved board with the embedded board, the collecting frame fixedly connected to the bottom of the sleeved board is communicated with the conical tube, and the effect that impurities filtered by the filter screen can fall into the collecting frame for collecting and processing due to self gravity is achieved.
3. The top fixedly connected with through the runner pipe is given vent to anger the orifice plate, and the top of orifice plate inner chamber of giving vent to anger No. one drainage board and No. two drainage boards of fixedly connected with respectively, consequently the wind that forms will fill the inside of case shell along No. one drainage board and No. two drainage boards respectively from bottom to top to realize the effect of heat dissipation treatment.
4. The conveyer pipe sequentially passes through the round hole and the pressed pipe and extrudes the barrier film, at the moment, the barrier film is broken, and then the conductive agent in the feeder is conveyed to each layer of the anode material through the conveyer pipe, so that the effect of increasing the conductivity of the anode and improving the charge and discharge efficiency is achieved.
Drawings
Fig. 1 is a schematic diagram of the external structure of a lithium iron phosphate battery anode and a lithium ion battery pack thereof according to the present invention.
Fig. 2 is a schematic cross-sectional view of the whole structure of the present invention.
Fig. 3 is a schematic structural view of the pressure regulating mechanism of the present invention.
Fig. 4 is a schematic diagram of a full section of the pressure regulating assembly of the present invention.
Fig. 5 is a schematic diagram of the whole cross-section structure of the pressure regulating member of the present invention.
Fig. 6 is an enlarged schematic view of the structure of fig. 5 a according to the present invention.
Fig. 7 is a schematic structural view of a limiting mechanism of the present invention.
Fig. 8 is a schematic diagram of a full section structure of the limiting mechanism of the present invention.
Fig. 9 is a schematic cross-sectional view of a part of the heat dissipating mechanism of the present invention.
Fig. 10 is a schematic cross-sectional view of the lower half of the heat dissipating mechanism of the present invention.
Fig. 11 is an enlarged schematic view of the structure of fig. 10B according to the present invention.
Fig. 12 is a schematic cross-sectional view of a heat dissipating assembly according to the present invention.
Fig. 13 is an enlarged schematic view of a part of the heat dissipating assembly according to the present invention.
Fig. 14 is a schematic cross-sectional view of a portion of a heat dissipating component of the present invention.
In the figure, 1, a box shell, 2, a bottom frame, 3, a limiting mechanism, 4, a heat dissipation mechanism, 5, a pressure regulating mechanism, 51, a pressure regulating assembly, 52, a wire, 53, a wire collecting box, 54, a wire outlet head, 511, a positive lug, 512, a negative lug, 513, a battery shell, 514, a current collector, 515, an SEI film, 516, a pressure regulating element, 517, a polyethylene diaphragm, 5161, an inclined panel, 5162, a round hole, 5163, a pressure receiving tube, 5164, a blocking film, 5165, a movable inner plate, 5166, a conveying tube, 5167, a feeder, 5168, a spring, 31, a bottom pressing block, 32, a protection seat, a bevel rod, 34, a limiting claw, 35, a hinging seat, 41, a conical tube, 42, an inner support, 43, a swivel, 44, a filter screen, 45, an elastic attaching ring, 46, a heat dissipation assembly, 47, a sleeve, 48, an inserting rod, 49, a universal seat, 40, an embedding plate, 401, a sleeve plate, 402, a collecting frame, 461, a double connecting tube, a motor, a frame, 464, a 463, a fan, 467, a fan 467, a flow plate, 469, a plug plate, a 4601, a friction plate, a 469.
Detailed Description
The present invention will be further described with reference to the accompanying drawings and detailed description, wherein it is to be understood that, under the precondition of no conflict, new embodiments can be formed by any combination of the embodiments or technical features described below, and it should be understood that the described embodiments are only some embodiments of the present invention, not all embodiments. All other embodiments, which can be made by those skilled in the art based on the embodiments of the invention without making any inventive effort, are intended to be within the scope of the invention.
Referring to fig. 1 to 14, the present invention provides a technical solution, as shown in fig. 1,2, 3, 4, 5 and 6, including a case 1, where the case 1 is used for placing and protecting a battery, and a bottom frame 2 is fixedly connected to the bottom of the case 1;
and the pressure regulating mechanism 5 is used for regulating and controlling the volume of the positive electrode of the battery.
The voltage regulating mechanism 5 is arranged in the box shell 1, wherein the voltage regulating mechanism 5 comprises a voltage regulating component 51, the voltage regulating component 51 is arranged in the box shell 1, a wire 52 is fixedly connected to the top of the voltage regulating component 51, a line concentration box 53 is inserted into one end, far away from the voltage regulating component 51, of the wire 52, a line outlet head 54 is fixedly connected to the top of the line concentration box 53, and the line concentration box 53 is fixedly connected to the top of the box shell 1.
The voltage regulating assembly 51 comprises a battery case 513, the battery case 513 is arranged in the case 1, the top of the battery case 513 is fixedly connected with a positive electrode lug 511 and a negative electrode lug 512 respectively, the positive electrode lug 511 and the negative electrode lug 512 are symmetrically connected to the top of the battery case 513, the tops of the positive electrode lug 511 and the negative electrode lug 512 are fixedly connected with a lead 52 respectively, a current collector 514, an SEI film 515 and a polyethylene film 517 are fixedly connected to the inside of the battery case 513 respectively, the polyethylene film 517 is arranged at the central part of the inside of the battery case 513, the SEI film 515 is arranged at the position between the current collector 514 and the polyethylene film 517, and a voltage regulating piece 516 is arranged between the SEI film 515 and the current collector 514, wherein the voltage regulating piece 516 is symmetrically arranged on two sides of the battery case 513.
The pressure regulator 516 includes a bevel plate 5161, the bevel plate 5161 is inserted at the top of the battery case 513 and extends to the inside, a round hole 5162 is opened on the surface of the bevel plate 5161, a pressure tube 5163 is extruded and adapted on the outer side of the bevel plate 5161, a barrier film 5164 is fixedly connected to the inside of the pressure tube 5163, a movable inner plate 5165 is fixedly connected to one end of the pressure tube 5163 far away from the bevel plate 5161, the movable inner plate 5165 is slidingly adapted to the inside of the battery case 513, a conveying pipe 5166 is slidingly adapted to one end of the bevel plate 5161 far away from the pressure tube 5163, a feeder 5167 is fixedly connected to one end of the feeder 5167 far away from the feeder 5167, a spring 5168 is fixedly connected to the outer side of the battery case 513, a conductive agent is placed inside the feeder 5167, a positive electrode material is placed between the current collector 514 and the SEI film, the positive electrode material comprises lithium iron phosphate, a conductive agent and an adhesive agent, and the like, however, after the whole battery is charged for a long time, the loss of the conductive agent is reduced in the whole charging efficiency, and the whole charging efficiency is reduced. Therefore, when the operator manually presses down the inclined plate 5161, the inclined plate 5161 presses the pressed tube 5163 outwards, the contact surface between the inclined plate 5161 and the pressed tube 5163 is an inclined surface, the movable inner plate 5165 fixedly connected to the other end of the pressed tube 5163 moves towards the inside of the battery case 513, so that the space where the positive electrode material is located is slightly compressed, meanwhile, along with the downward movement of the inclined plate 5161, the round hole 5162 formed on the surface of the inclined plate 5161 moves downwards and is communicated with the conveying tube 5166, the other end of the conveying tube 5166 is connected with the feeder 5167, the spring 5168 connected with the inner side of the feeder 5167 is compressed, the conveying tube 5166 sequentially passes through the round hole 5162 and the pressed tube 5163 and presses the blocking film 5164, the blocking film 5164 is broken, and then the conductive agent in the feeder 5167 is conveyed to each layer of the positive electrode material through the conveying tube 5166, so that the positive electrode performance is increased, and the charging efficiency is improved.
As shown in fig. 7 and 8, a limiting mechanism 3, the limiting mechanism 3 being used for limiting and fixing the battery;
a heat radiation mechanism 4, wherein the heat radiation mechanism 4 is used for radiating heat inside the battery;
the limiting mechanisms 3 are symmetrically connected to two sides of the case 1, and the heat dissipation mechanism 4 is fixedly arranged at the bottom of the case 1;
The limiting mechanism 3 comprises a bottom pressing block 31, the bottom pressing block 31 is fixedly connected to the bottom of a battery case 513, a protection seat 32 is arranged at the side of the bottom pressing block 31, the protection seat 32 is fixedly connected to the bottom of an inner cavity of the case 1, an inclined surface rod 33 is inserted into the protection seat 32, one end of the inclined surface rod 33 is in extrusion fit with the bottom pressing block 31, one end of the inclined surface rod 33 far away from the bottom pressing block 31 is fixedly connected with a limiting claw 34, the connecting part of the inclined surface rod 33 and the limiting claw 34 is flexible, the center part of the limiting claw 34 is rotationally connected with a hinging seat 35, the hinging seat 35 is fixedly connected to the outer side of the case 1, the top end of the limiting claw 34 is in extrusion fit with the outer side of the battery case 513, the battery case 513 is stretched into the case 1 and placed on the protection seat 32, in the process of downward movement of the battery case 513, the battery case will press the inclined surface rod 33 with the bottom pressing block 31 fixedly connected to the bottom thereof, wherein the contact surfaces of the bottom pressing block 31 and the inclined surface rod 33 are inclined surfaces, at this time, the inclined surface rod 33 will extend outwards along the inner wall of the protection seat 32, and the limit claw 34 fixedly connected to the other end of the inclined surface rod 33 will deflect clockwise through the hinge seat 35, wherein the connection part of the inclined surface rod 33 and the limit claw 34 is flexible, at this time, the top end of the limit claw 34 will pass through the case 1 and press and limit the outer side of the battery case 513, thereby playing the role of limiting and fixing the battery case 513 in the process of putting in, and at the same time, improving the safety of the device: reduces the potential of potential safety hazards of electric leakage, fire and the like caused by loosening of the battery, ensures the personal and property safety of users, improves the stability of electric connection, is beneficial to keeping good contact between the battery electrode and the connecting part, reduces the change of contact resistance, the electric energy transmission efficiency is improved, and the problems of heat generation, energy loss, short circuit and the like caused by poor contact are prevented.
As shown in fig. 9, 10, 11, 12, 13 and 14, the heat dissipation mechanism 4 comprises a conical tube 41, an inner support 42 is fixedly connected to the top of the inner cavity of the conical tube 41, a rotating ring 43 is rotatably connected to the inside of the inner support 42, a filter screen 44 is fixedly connected to the bottom of the rotating ring 43, an elastic attaching ring 45 is fixedly connected to the outer side of the filter screen 44, one side of the elastic attaching ring 45 away from the filter screen 44 is extruded and matched with the inside of the conical tube 41, a heat dissipation assembly 46 is fixedly connected to the central part of the inner side of the filter screen 44, the heat dissipation assembly 46 is fixedly connected to the bottom of the case 1, a sleeve 47 is fixedly connected to the inner side of the filter screen 44, a plug rod 48 is inserted into one end of the sleeve 47, which is far from the sleeve 47, a universal seat 49 is fixedly connected to the bottom of the universal seat 49, a plugging plate 40 is slidably matched with a sleeve plate 401, the sleeve plate 401 is fixedly connected to the bottom of the conical tube 41, the sleeve plate 401 and the bottom of the conical tube 41 are fixedly connected with the collecting frame 402, at this time, the filter screen 44 connected to the other end of the reset spring 466 is deflected inwards on the inner support 42 by the swivel 43, wherein the filter screen 44 plays a role in filtering impurities in the outside air, meanwhile, the elastic attaching ring 45 fixedly connected to the ring side of the filter screen 44 is elastic, during the inward deflection of the filter screen 44, the sleeve 47 fixedly connected to the inner side of the filter screen 44 is deflected inwards with the inserting rod 48, the universal seat 49 fixedly connected to the other end of the inserting rod 48 is connected with the inserting plate 40, so that the universal seat 49 is inserted into the sleeve plate 401 with the inserting plate 40, the collecting frame 402 fixedly connected to the bottom of the sleeve plate 401 is communicated with the conical tube 41, thereby playing a role in allowing the impurities filtered by the filter screen 44 to fall into the collecting frame 402 for collecting treatment due to self-gravity.
The heat dissipation assembly 46 comprises a double connecting pipe 461, the double connecting pipe 461 is fixedly connected to the bottom of the case 1, the outer end of the double connecting pipe 461 is fixedly connected with a conical pipe 41, the inner side of the double connecting pipe 461 is fixedly connected with a frame 462, the central part of the frame 462 is fixedly connected with a motor 463, the output end of the motor 463 is connected with a fan 464 through a coupling, one end of an output shaft of the motor 463, which is close to the fan 464, is fixedly connected with a friction block 4601, the outer side of the friction block 4601 is in extrusion fit with an inner shaft 465, the inner shaft 465 is arranged in the output shaft of the motor 463, the outer end face of the inner shaft 465 is fixedly connected with a reset spring 466, then the motor 463 is started again, the fan 464 connected with the output end of the motor 463 through the coupling rotates, in addition, the outermost end of the output shaft of the motor 463 is fixedly connected with the friction block 4601, the outer side of the friction block 4601 is in extrusion fit with the inner shaft 465, and the rotation of the output shaft of the motor 463 rotates together with the friction block 4601, however, there is a press fit and friction fit relationship between the friction block 4601 and the inner shaft 465, so that the friction block 4601 will rotate together with the inner shaft 465, wherein the end of the inner shaft 465 away from the motor 463 is fixedly connected with the return spring 466, and the other end of the return spring 466 is connected with the filter screen 44, so that the return spring 466 will twist, making its length reduced and diameter increased, but when the friction force between the friction block 4601 and the inner shaft 465 is smaller than the torsion force of the return spring 466, the inner shaft 465 will remain stationary with the return spring 466, and the friction block 4601 will continue to rotate with the output shaft of the motor 463, wherein the return spring 466 still remains in a compressed and twisted state, the end of the return spring 466 away from the inner shaft 465 is fixedly connected to the inner side of the filter screen 44, the end of the double-pipe 461 away from the conical pipe 41 is fixedly connected with the flow pipe 467, the top fixedly connected with of runner pipe 467 is given vent to anger the orifice plate 468, square hole has been seted up at the top of orifice plate 468 of giving vent to anger, the top of orifice plate 468 inner chamber of giving vent to anger is fixedly connected with No. one drainage plate 469 and No. two drainage plates 460 respectively, the wind that is introduced by fan 464 immediately will enter into runner pipe 467 through conical tube 41 and two connecting tubes 461 in proper order, wherein the top fixedly connected with of runner pipe 467 is given vent to anger orifice plate 468, and the top of orifice plate 468 inner chamber of giving vent to anger is fixedly connected with No. one drainage plate 469 and No. two drainage plates 460 respectively, consequently, the wind that forms will be along No. one drainage plate 469 and No. two drainage plates 460 respectively, fill into the inside of case 1 from bottom to top, thereby realize the effect of heat dissipation treatment.
When the battery case 513 is used, firstly, the battery case 513 is stretched into the case 1 and placed on the protection seat 32, during the downward movement of the battery case 513, the battery case is pressed against the inclined plane rod 33 by the bottom pressing block 31 fixedly connected to the bottom of the battery case 513, at this time, the inclined plane rod 33 is stretched outwards along the inner wall of the protection seat 32, and the limit claw 34 fixedly connected to the other end of the inclined plane rod 33 is deflected clockwise by the hinge seat 35, at this time, the top end of the limit claw 34 passes through the case 1 and presses and limits the outer side of the battery case 513. The motor 463 is then restarted, such that the fan 464 connected to its output end via the coupling is rotated, and the outermost end of the output shaft of the motor 463 is fixedly connected to the friction block 4601, while the outer side of the friction block 4601 is press-fitted with the inner shaft 465, and the rotation of the output shaft of the motor 463 rotates together with the friction block 4601, however, there is a press-fit and friction-fit relationship between the friction block 4601 and the inner shaft 465, such that the friction block 4601 rotates together with the inner shaft 465, wherein one end of the inner shaft 465 remote from the motor 463 is fixedly connected to the return spring 466, and the other end of the return spring 466 is connected to the filter screen 44, such that the return spring 466 is twisted, such that the length thereof is reduced and the diameter thereof is increased, and the filter screen 44 is inwardly deflected on the inner support 42 by the swivel 43, and during the inward deflection of the filter screen 44, the sleeve 47 fixedly connected to the inner side thereof is inwardly deflected with the insert rod 48, and the universal seat 49 fixedly connected to the other end of the insert rod 48 is connected to the insert plate 40, such that the universal seat 49 is inserted into the insert plate 401, such that the insert plate is connected to the insert plate 401, and the insert plate is connected to the collector plate 401, and the insert plate is fixed to the insert plate 401, and the plug plate, and the collector plate is connected to the plug.
In the charging process, part of lithium ions in the lithium iron phosphate are separated, transferred to the negative electrode through electrolyte and are embedded into a carbon material of the negative electrode, and meanwhile electrons are released from the positive electrode and reach the negative electrode from an external circuit, so that the balance of chemical reaction is maintained. In the discharging process, lithium ions are separated from the negative electrode and reach the positive electrode through the electrolyte, meanwhile, electrons are released from the negative electrode, and reach the positive electrode from an external circuit to provide energy for the outside.
The above embodiments are only preferred embodiments of the present invention, and the scope of the present invention is not limited thereto, but various modifications can be made by those skilled in the art without inventive effort from the above concepts, and all modifications are within the scope of the present invention.
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| CN213878299U (en) * | 2021-01-13 | 2021-08-03 | 南京宇天新能源科技有限公司 | Lithium iron phosphate battery pack |
| CN214254535U (en) * | 2021-02-05 | 2021-09-21 | 徐州晟鑫教育科技有限公司 | Prevent high security electric motor car lithium cell package of short circuit |
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| JP2008066207A (en) * | 2006-09-11 | 2008-03-21 | Gs Yuasa Corporation:Kk | Battery |
| KR20210106255A (en) * | 2020-02-20 | 2021-08-30 | 주식회사 엘지에너지솔루션 | Lithium rechargeable battery and lithium rechargeable battery manufacturing method |
| CN112542605A (en) * | 2020-12-24 | 2021-03-23 | 深圳新源柔性科技有限公司 | Flexible reserve battery |
| CN114171837B (en) * | 2021-10-22 | 2025-02-11 | 东莞市创汇原电源技术有限公司 | A portable energy storage power source capable of realizing capacity expansion |
| JP7586125B2 (en) * | 2022-04-07 | 2024-11-19 | トヨタ自動車株式会社 | Conductive Materials and Batteries |
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| CN213878299U (en) * | 2021-01-13 | 2021-08-03 | 南京宇天新能源科技有限公司 | Lithium iron phosphate battery pack |
| CN214254535U (en) * | 2021-02-05 | 2021-09-21 | 徐州晟鑫教育科技有限公司 | Prevent high security electric motor car lithium cell package of short circuit |
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