108results about How to "Less control points" patented technology

The invention discloses a guiding line generation method and a guiding line generation device. The method comprises the following steps: acquiring a stop line of an entry lane at an intersection and a stop line of an object lane; selecting a first control point in the stop line of the object lane, and selecting a second control point in the stop line of the entry lane; determining a Bezier control point according to an included angle between the entry lane and the object lane; and fitting a Bezier curve based on the first control point, the second control point and the Bezier control point, wherein the Bezier curve is a guiding line from the entry lane to the object lane. The control points in the guiding line are determined according to the stop line of the entry lane and the stop line of the object lane, and the Bezier curve generated by fitting the control points is used as the guiding line. Compared with methods for artificially drafting the guiding line, the method disclosed in the invention has the advantages of low cost, high efficiency, few control points in the generated guiding line, and realization of rapid guidance of an automatically driven vehicle to pass by the intersection at the intersection.

A technology for synchronously removing N and P from the city sewage features that the composite suspended living things system with active sludge and biomembrane is created in a batch of composite bioreactors, which in running by the sequence of anaerobic, aerobic and anoxic steps. Its advantages are short reaction flow, less consumption of carbon source, high effect and low cost.

The invention belongs to the technical field of battery materials, and discloses a preparation method of an aluminum oxide coated lithium nickel manganese cobalt cathode material. The method comprises the steps of raw material mixing, primary sintering, doping, secondary sintering, coating and size stabilization treatment, wherein the step of raw material mixing comprises the steps that a three-dimensional efficient titled mixer is adopted, polyurethane balls serve as a mixing medium, dispersing, even mixing and smashing are conducted on lithium carbonate, a nanometer spherical nickel cobalt manganese hydroxide precursor and polyethylene glycol, and a uniform intermediate mixture is formed. The preparation method of the aluminum oxide coated lithium nickel manganese cobalt cathode material is low in primary sintering temperature, short in sintering time, simple in technology, large in specific capacity and good in cycling performance. The preparation method further has the advantages of being low in investment, reliable in technology, low in operating cost and the like, and the good economic benefit and market promotion value are achieved.

The invention relates to a flexible charging optimization method sufficiently using an electric vehicle off-board charger, which solves shortcomings in the prior art. The technical scheme is that an annular network form is established according to needs to connect alternating current-direct current conversion modules; control switches are arranged between the alternating current-direct current conversion modules; the alternating current-direct current conversion modules all correspond to charging interfaces and demand data readers; control ends of the control switches are connected with a charging main controller; and the demand data readers are also connected with the charging main controller. The charging main controller judges working states and working number of the current alternating current-direct current conversion modules according to working states of the charging interfaces; if data input by the demand data reader in the current working charging interface is larger than output power of the alternating current-direct current conversion module, the charging main controller executes the step 4; and if the data input by the demand data reader in the current working charging interface is less than or equal to the output power of the alternating current-direct current conversion module, the charging main controller executes the follow-up steps.

The invention discloses washable touch screen temporary protection ink as well as a preparation method and application thereof. The washable touch screen temporary protection ink consists of the following raw materials by weight percent: 0 to 50 percent of polyacrylic acid resin solution, 5 to 90 percent of water-based paint resin, 5 to 50 percent of water-soluble macromolecule solution, 0 to 70 percent of polyacrylate emulsion, 1 to 10 percent of packing, 0.1 to 2 percent of pigment and 2 to 5 percent of functional additive, wherein the polyacrylic acid resin solution and the polyacrylate emulsion are not simultaneously equal to 0. When in preparation, a polyacrylic acid solution, the polyacrylate emulsion, a water-based leveling agent and packing are placed into a dispersion machine and uniformly mixed, and then the other components are placed into the dispersion machine to be uniformly mixed to obtain the washable touch screen temporary protection ink. The ink can protect touch screen cover plate glass or an ITO glass surface layer film against damage during a construction process at a high temperature of 200 DEG C; moreover, after the ink is used at 200 DEG C, the ink can fall off in block shapes in 30s to 2min after being soaked in water with the temperature of 50 DEG C.

The invention discloses a method for preparing modified lithium nickel manganese oxide which is the anode material of a lithium ion battery. The method comprises the following steps: mixing a manganese salt material and a nickel salt material, and preparing a nickel manganese precursor through a sol-gel method; mixing the nickel manganese precursor and the nickel salt by using a three-dimensional oblique type mixing machine; presintering and high temperature sintering, and doping F- or F- and metal cations, then adding a metallic oxide and performing wet coating; and finally, acquiring a lithium nickel manganese oxide finished product by low temperature sintering, fluid energy milling and grading. The method provided by the invention uses an ion doping modification technology to improve the cycle performance and high temperature stability of the lithium nickel manganese oxide, and uses a wet coating technology to improve the high pressure cycle performance and high temperature stability of the lithium nickel manganese oxide.

An automatic vessel wall edge detection method based on an intravascular ultrasound image sequence includes the steps of carrying out coarse detection, obtaining an initial edge of a first frame image by means of series of image processing methods according to information characteristics on a vessel wall, carrying out fine detection, improving the GVF-snake algorithm, leading in self-adjusting factors and self-adaptation external force, improving the gradient influences of data items close to the edge, reducing the smooth effect caused by diffusion, meanwhile adjusting the direction of force according to the relative position of the image edge and a current outline curve, enlarging the acquisition range of a moving outline, and solving the problems that a local area can not be reached, and accordingly the required edge can not be obtained so that the initial edge can be precisely converged to a practical vessel wall edge. In the deforming process, spline B is added for three times so as to reduce control points, improve convergence speed, achieve fairing of the outline curve and obtain the final edge of the first frame image. Due to the fact that time and space correlation between adjacent images is large, the obtained final edge serves as the initial edge of an image of the next frame, fine detection is repeated, and similarly, the vessel wall edge of the image sequence is obtained.

The invention discloses a method for preparing liquid sodium silicate by one-step liquid phase reaction. Quartz sand and liquid alkali are mixed with 2.2-3.4:1 of SiO2: NaOH molar ratio and the mixture under stirring status is pumped into a liquid phase reaction pot which is in stirring status; steam is directly fed to heat and when the pressure in the pot reaches to 0.65MPa, steam is stopped feeding; the temperature is automatically raised to 0.65-0.75MPa, and after 4-6 hours of full reaction, decompression and vacuum drawing and filtering are carried out, and the liquid material drawn and filtered is liquid sodium silicate with high purity. The invention also discloses a liquid phase reaction pot which is used specially in the method. The method of the invention has short synthesis line, few control points and simple operation, can obtain liquid sodium silicate products with high quality, generates no three wastes during the whole production course and pertains to green chemical production technique.

The invention relates to a pre-charging control method for a vehicle motor controller. Measured values obtained before and after the starting of pre-charging are compared to judge whether the pre-charging is started or not, and measured values obtained after the starting of the pre-charging and the finishing of the pre-charging are compared to judge whether the pre-charging is finished or not. By the method provided by the invention, a way of acquiring and judging the direct current bus voltage of a pre-charging circuit is improved independent of a complex detection circuit based on a conventional detection circuit to realize accurate judgment in the starting and finishing of the pre-charging, so the method is high in practicability and flexible in configuration, and the security and reliability of the motor controller and the whole electric vehicle with new energy are improved. The motor controller adopting the method has high accuracy, fewer control points and fault points, a simple and reliable system and high reliability; and the motor controller finishes pre-charging control, and a diagnostic function is added at the same time.

The invention discloses a preparation method of an oxide-cladding lithium ion battery positive material. The preparation method comprises the following steps: mixing manganese salt and nickel salt materials, preparing a nickel-manganese precursor by virtue of a sol-gel method, mixing the nickel-manganese precursor with lithium salt by adopting a three-dimensional oblique mixer, pre-sintering, sintering at high temperature, cladding in a wet method by selecting metal-containing oxide, sintering at low temperature, crushing by virtue of air flow, and grading to obtain a lithium nickel manganese oxide finished product. By adopting metal oxide and cladding the lithium nickel manganese oxide material by virtue of a special wet-method cladding process, the cycling performance and high-temperature performance of the lithium nickel manganese oxide can be improved.

The invention discloses a method of realizing a cutter path parameter arc length based on three times of PH curve interpolations. The method comprises the following steps of (1) using three times of PH curves to carry out local interpolation on two adjacent data points, acquiring several three-times PH curves and using a set of PH curves between the adjacent data points to form an interpolation curve; (2) converting the interpolation curve into one integral B spline curve, and carrying out isoparametric sampling on the integral B spline curve; (3) calculating an arc length parameter of a sampling point and establishing a target function taking the arc length parameter as a variable; (4) using an ELSPIA algorithm to solve the target function, and acquiring a B spline of an approximation parameter arc length. By using the parameter arc length method, the isoparametric sampling is performed on the integral B spline curve, cutter path B spline fitting algorithm efficiency is increased, the parameter arc length is realized, a speed fluctuation during processing is reduced and phenomena of a shape defect of a cutter path and error dissatisfaction are effectively improved.

The invention relates to a technology and a device for recycling a chloroethylene high-boiling substance. The technology includes following successive steps: recycle of chloroethylene, recycle of dichloroethane and recycle of trichloroethane. By means of two padding rectification columns, including a chloroethylene separation column and a low-boiling column, and accessory devices thereof, a chloroethylene gas and a high-purity 1,1-dichloroethane liquid are separated respectively under a normal pressure condition and a pressurized condition, so that all components in the chloroethylene high-boiling substance are fully extracted. The technology is carried out in a sealed system, is free of generation of waste residue and waste water and is environmental-protective, safe and reliable. A required heating temperature is low so that the technology can be carried out through waste hot water and waste hot steam. The technology is low in energy consumption, is less in controlling points and is simple in operation. Through rectification to a residual liquid generated during a producing process, different materials having utilization values are obtained. The method can reduce environmental pollution and has a significant economic benefit.

The invention discloses a waste recovery process in a production process of a nickel-cobalt-manganese ternary precursor used for recovering valuable metals, such as unqualified wastes which are not upto the product standard and ground recovered materials produced in the production process. Acid solution reaction is firstly carried out on a nickel-cobalt-manganese ternary precursor waste by usinga sulfuric acid solution to leach out acid-decomposable components in the waste; oxidation-reduction reaction is carried out on one part of acid-insoluble oxides in the nickel-cobalt-manganese ternaryprecursor waste by using the reductibility of valuable metal active sulfide recovered from precipitated mother liquor of the nickel-cobalt-manganese ternary precursor; and the waste is decomposed byfully utilizing the oxidation-reduction properties of two materials, so that the recovery target is achieved. The treatment process of combining waste residues with waste water in the production process is fully considered in the whole process reaction, so that the recovery rate of the valuable metals is improved while the production cost is reduced; the whole process is simple and control pointsare few; and other impurities are not introduced into the reaction process, so that the impurity removal process is reduced and the impurity removal cost is reduced.

The invention belongs to the technical field of battery materials and discloses a preparing method for a spherical LiMn1-x-yNixCoyO2 anode material. The method comprises the steps of raw material mixing, primary sintering, doping, secondary sintering and whole particle treating. A three-dimensional efficient oblique mixing machine is adopted for raw material mixing, a polyurethane sphere is adopted as a mixed material medium, and lithium carbonate, a nanometer spherical Ni-Co-Mn hydroxide precursor and polyvinyl alcohol are dispersed, mixed uniformly and smashed to form a uniform intermediate mixture. According to the preparing method for the spherical LiMn1-x-yNixCoyO2 anode material, the temperature for primary sintering is low, sintering time is short, the process is simple, the specific capacity is high, and cycling performance is good. The preparing method has the advantages of being small in investment, reliable in technology, low in operation expense and the like, and has good economic benefits and market popularization value.

The invention belongs to the technical field of a battery material, and discloses a preparation method for a zinc oxide-coated lithium nickel manganese cobalt positive electrode material. The preparation method comprises the steps of mixing raw materials, primary sintering, doping, secondary sintering, coating, and performing granulation, wherein the step of mixing raw materials is carried out by the steps of adopting a three-dimensional efficient inclined type mixer, taking zirconium balls as the material-mixing medium, and performing dispersion, uniform mixing and smashing on lithium carbonate, a nanosphere-shaped nickel manganese cobalt hydroxide precursor and polyethylene glycol to form uniform intermediate mixture. The preparation method for the zinc oxide-coated lithium nickel manganese cobalt positive electrode material is low in primary sintering temperature, short in sintering time, simple in process, high in specific capacity, and good in cycling performance; and the preparation method also has the advantages of low investment, reliable technology, low operating cost, high economic benefits, high market popularization value and the like.

The invention discloses a preparation technology of a modified positive material lithium nickel manganese oxide for a lithium-ion battery. The preparation technology comprises the following steps: mixing materials of a manganese salt and a nickel salt to prepare a nickel manganese precursor through a sol-gel method; mixing the nickel manganese precursor, a lithium salt, re-doped F<-> or F<-> and metal cations by a three-dimensional inclined mixer; carrying out pre-sintering and high-temperature sintering, adding a metal oxide and carrying out mixed cladding; and finally carrying out low-temperature sintering, airflow crushing and classification to obtain a finished product lithium nickel manganese oxide. According to the preparation technology, the high temperature performance, the electrochemical cycle performance and the specific discharge capacity of the positive material lithium nickel manganese oxide for the battery can be effectively improved.

The invention discloses a hue adjusting process for a high-whiteness coating white cardboard. An adding point of dye is selected at a head box through which core pulp passes; an adding point of a fluorescent whitening agent is selected at a feeding trough of which the surface is sized. According to the hue adjusting process disclosed by the invention, the dye and the whitening agent are separately added; when the hue is adjusted, control points are few and the adjusting time of the whiteness and the hue is short; and the adjusted finished paper not only meets the whiteness standard, but also achieves stable and uniform effects of the hue. According to the hue adjusting process disclosed by the invention, the consumption of the dye and the whitening agent is reduced and the quantity of the whitening agent in white water is little, so that the cost is reduced and the difficulty in wastewater treatment is reduced.

The invention relates to the field of medicine, in particular to a preparation process of human immunoglobulin for intravenous injection. Octanoic acid is used for replacing ethanol as a precipitatingagent, so that acidic protein in blood plasma generates precipitates; IgG molecules with high isoelectric points are reserved on supernate; only through one-step precipitation reaction, the materialscan be transferred to a chromatography working procedure; caprylate is used; lipid envelope viruses are inactivated under the mild condition in short time; even partial non-lipid envelope viruses canbe inactivated; the action time is short; the effect is good; the bioactivity of the immunoglobulin cannot be easily influenced; the product safety is improved; the quality and the yield of the product are ensured; a two-step chromatography working procedure is used; most partial polymers and other impure protein are removed; the pyrogen is reduced; chromoprotein such as ceruloplasmin can be adsorbed; the product appearance is effectively improved; one-step precipitation reaction is used; the loss is reduced; the product yield is improved; the preparation process of human immunoglobulin for intravenous injection has the advantages of high product yield, high purity and high safety.

The invention belongs to the technical field of battery materials, and discloses a preparation method of a magnesium oxide coated lithium nickel manganese cobalt cathode material. The method comprises the steps of raw material mixing, primary sintering, doping, secondary sintering and coating, wherein the step of raw material mixing comprises the steps that dispersing, even mixing and smashing are conducted on lithium carbonate, a nanometer spherical nickel cobalt manganese hydroxide precursor, polyacrylate and deionized water, and a uniform intermediate mixture is formed. The preparation method of the magnesium oxide coated lithium nickel manganese cobalt cathode material is low in primary sintering temperature, short in sintering time, simple in technology, large in specific capacity and good in cycling performance. The preparation method further has the advantages of being low in investment, reliable in technology, low in operating cost and the like, and the good economic benefit and market promotion value are achieved.

The invention discloses a sewage treatment, regeneration and reuse system and a method for treating sewage by using the system. The system comprises a pretreatment water collecting tank, an anoxic tank, an anaerobic tank, an aerobic membrane tank and a disinfection tank, wherein partition plates extending upwards from the bottoms are arranged in the anoxic tank and the anaerobic tank, an MBR membrane assembly is arranged in the aerobic membrane tank, the pretreatment water collecting tank is connected with the water inlet of the anoxic tank through a pump, the aerobic membrane tank is connected with the disinfection tank through a membrane suction pump, a gas stripping reflux pipe is arranged at the bottom of the aerobic membrane tank, the aerobic membrane tank is connected to the water inlet of the anoxic tank through the gas stripping reflux pipe, the sewage treatment, regeneration and reuse system further comprises an air supply device, and the air supply device is connected with the MBR membrane assembly and the gas stripping reflux pipe through pipelines. The system is high in sewage treatment efficiency, low in energy consumption, simple and convenient to operate and stable in effect.

The invention discloses a high-performance starch-plastic composite. The high-performance starch-plastic composite comprises raw materials in parts by weight as follows: 38-45 parts of plastic masterbatch, 10-15 parts of chloroprene rubber, 12-16 parts of modified starch, 6-10 parts of wheat straw powder, 2-5 parts of ethylene acrylic acid grafted maleic anhydride, 3-7 parts of multiwalled carbonnanotubes, 2-6 parts of silver-alginate nanofibers, 3-7 parts of straw cellulose, 2-4 parts of nano-palygorskite, 2-6 parts of talcum powder extracted from minerals, 3-5 parts of nano-rectorite, 4-8 parts of nano-calcium carbonate, 2-4 parts of an impact modifier, 1-2 parts of a coupling agent, 3-6 parts of a plasticizer, 2-5 parts of an inorganic flame retardant and 2-4 parts of an antioxidant. The starch-plastic composite has high-temperature resistance, toughness, tear resistance, impact resistance, ageing resistance and static resistance, and has long service life and high social benefit and economic benefit.

The invention relates to the technical field of sewage biochemical treatment, and provides an improved A2O biochemical reaction system and a sewage treatment method.The improved A2O biochemical reaction system comprises at least one anaerobic zone, at least one anoxic zone, at least one aerobic zone and at least one three-phase separator; the three-phase separator is arranged in the aerobic zone and is in sealed connection with the bottom of the aerobic zone, and the three-phase separator is suitable for dividing the aerobic zone into a first aerobic zone and a second aerobic zone. By adopting an integrated pool type structure, the occupied area is saved, the use of a high-efficiency reflux device is facilitated, the reflux energy consumption is reduced, and the nitrogen and phosphorus removal effect of the whole process can be obviously improved. The three-phase separator can automatically fall separated nitrified sludge back to the tail end of the second aerobic zone, the nitrified sludge flows back to the anoxic zone along with nitrified sludge mixed liquor, sludge backflow and internal backflow of the nitrified sludge mixed liquor can be combined into a whole, a set of backflow system is saved, a control point is reduced, operation is simpler, and operation, maintenance and management are convenient.

The invention discloses a semi-circular tip jewelry molding machine, and belongs to the technical field of jewelry processing machinery. The semi-circular tip jewelry molding machine mainly comprises a frame, and a feeding device and a cutting and molding device which are arranged on the frame in turn and driven by a driving device, wherein the feeding device is arranged on the frame and is used for gradually conveying metal wires to a downstream position; the cutting and molding device is arranged on the frame, positioned on the downstream of the feeding device, and used for cutting the metal wires and molding the metal wires into semi-circular tips; and the driving device is used for coordinating sequential actions of the feeding device and the cutting and molding device. The semi-circular tip jewelry molding machine can manufacture the metal wires into semi-circular tip jewelry, replaces manual manufacture, and improves the production efficiency of jewelry processing.

The invention relates to a glufosinate-ammonium clean production process and a method thereof, in particular to a glufosinate-ammonium salt reaction liquid purification and refining (including desalination, decoloration, concentration and the like) method, which adopts the combined process of electrodialysis desalination, ultrafiltration decoloration, activated carbon decoloration, evaporation, concentration and crystallization, nanofiltration and concentration, NOC advanced oxidation, evaporation, crystallization, salt separation, reverse osmosis concentration and the like. The glufosinate-ammonium salt reaction liquid does not need to be diluted and directly enters electrodialysis desalination, the desalinated liquid is subjected to ultrafiltration decolorization and activated carbon decolorization, and the method is suitable for desalination decolorization treatment of various glufosinate-ammonium ammonolysis reaction liquids. Compared with the prior art, the method has the advantages of short process flow, low equipment material requirement, investment saving, low operation cost, energy saving, water saving, small occupied area, few control points, simplicity in operation, convenience in realizing automatic control, high product recovery rate, stable and reliable product quality and the like.

The invention relates to the field of plastics and particularly relates to a biodegradable plastic preparation method. According to the biodegradable plastic preparation method disclosed by the invention, vital gluten and starch are blended, and a plasticizer is added to conduct hot press molding to prepare the biodegradable plastic. The materials used are biodegradable materials, and the protein plastic has excellent biodegradability, and belongs to environment-friendly materials, so that environmental pollution is avoided.

The invention relates to a method for preparing a high-capacity lithium iron phosphate lithium ion battery for an automobile. The method comprises the steps of: (1) preparing a negative pole plate of the battery; (2) preparing a battery cell by carrying out drying, rolling, slitting and die cutting on the negative pole plate and superposing the negative pole plate with a positive pole plate; (3) packing the dried battery cell into a plastic shell, packaging, and detecting leakage, wherein the top end of the plastic shell is provided with a liquid injection hole which is provided with a safety valve; (4) carrying out vacuumizing liquid injecting on the packaged dried battery and standing; and (5) carrying out pre-charging, high temperature aging and forming on the battery to obtain a finished product battery. The method for preparing the high-capacity lithium iron phosphate lithium ion battery for the automobile provided by the invention is simple in process and low in cost, and the obtained lithium ion battery has the advantages of uniform temperature distribution, small internal resistance of the battery, no stress inside the battery, good rate discharge and good safety of the battery and the like so that the method for preparing the high-capacity lithium iron phosphate lithium ion battery for the automobile provided by the invention has a good application prospect.

The invention relates to an intake and exhaust integrated pulse valve. A compressed air outlet connector and a container-end connector are arranged on a left valve body; a compressed air inlet connector is arranged on a right valve body; the edge part of a sealing diaphragm is tightly pressed by the left valve body and the right valve body; a sliding hole is formed in the right valve body and communicated with the compressed air inlet connector; a spring seat pipe, in which a first return spring is arranged, is connected in the sliding hole in a sliding manner; a sealing top plate is fixedly connected to the left end part of the spring seat pipe; the middle part of the sealing diaphragm is fixed on the sealing top plate, so that the sealing top plate, along with the sealing diaphragm, can be propped against the left valve body, so as to cut off the gas channel of the compressed air outlet connector; and a one-way switch hole, in which a second return spring and a sealing pressing block are arranged, is formed in the right valve body. Therefore, only one valve is needed to finish intake and exhaust, and control points are fewer during the operation, and the valve does not need to be pneumatically or electrically driven.

The invention relates to a preparation method of a lithium iron phosphate lithium ion battery for a large-capacity vehicle. The preparation method comprises the following steps of: (1) preparing a cathode pole piece of the battery; (2) manufacturing an electric core after drying, rolling, slitting, carrying out die-cutting on and carrying out lamination with an anode pole piece on the cathode pole piece; (3) mounting the dried electric core into a plastic shell, and packaging and carrying out leak detection, wherein a liquid injection hole is formed at the top end of the plastic shell, and a safe valve is mounted on the liquid injection hole; (4) vacuumizing the packaged and dried battery in a liquid injection manner, and placing; and (5) carrying out pre-charging, high-temperature aging and forming on the battery, so as to obtain a finished product battery. The preparation method provided by the invention has the advantages of simple process and low cost; the obtained lithium ion battery has the advantages of uniform temperature distribution, small battery inner resistance, no internal stress, good rate discharge, good battery security and the like; and the preparation method provided by the invention has good application prospect.

The invention discloses an environment-friendly and degradable food-grade plastic packaging film. The environment-friendly and degradable food-grade plastic packaging film is prepared from the following raw materials in parts by weight: 65 to 76 parts of modified linear low-density polyethylene particles, 25 to 35 parts of plant starch, 7 to 14 parts of sarcandra glabra fibers, 8 to 18 parts of filling master batch, 3 to 6 parts of a dispersant, 2 to 4 parts of a coupling agent, 2 to 6 parts of a compound plant antibacterial agent, 3 to 5 parts of an amphoteric surfactant, 5 to 7 parts of graphene oxide, 3 to 5 parts of xanthan gum, 1 to 3 parts of cellulose acetate, 2 to 4 parts of a light degradation agent, 1 to 3 parts of an ultraviolet absorbent, 2 to 4 parts of coconut oil, 1 to 3 parts of glycerol, 1 to 3 parts of prunus humilis bunge fibers, 1 to 3 parts of a waterproof agent and 2 to 4 parts of an antioxidant. According to the environment-friendly and degradable food-grade plastic packaging film, the plant starch and the sarcandra glabra fibers have abundant sources and a cheap price, and are environmentally friendly; the prepared plastic thin film has the advantages of high strength, low production cost, biodegradability, antistatic performance, oxidization resistance and ultraviolet resistance, and the problem of white pollution can be alleviated.

The invention relates to a fabrication method of a high-capacity lithium iron phosphate battery for an automobile. The method comprises the steps of (1) fabricating positive pole pieces of the battery, (2) conducting drying, rolling, slitting and die cutting on the positive pole pieces, and laminating the positive pole pieces with negative pole pieces to be fabricated into a battery cell, (3) drying the battery cell, loading the battery cell into a plastic housing, packaging and detecting leakage, (4) vacuumizing the packaged and dried battery, injecting liquid and placing the battery, and (5) conducting precharge, high temperature ageing and formation on the battery to obtain the finished battery, wherein liquid injection holes are formed at the top end of the plastic housing, and safety valves are mounted on the liquid injection holes. The method is simple in technology and low in cost, the obtained lithium ion battery has the advantages of uniform temperature distribution, small internal resistance, no internal stress, good rate discharge, good safety, and the like, and the method has a good application prospect.