49results about How to "Solve flatulence" patented technology

The invention discloses a lithium ion battery formation method. A negative electrode active substance of a lithium ion battery comprises a lithium-rich manganese-based positive electrode material. Theformation method includes at least three times of charge-discharge cycles; in the two former charge-discharge cycles, charge cut-off voltage is lower than 4.4V, discharge current is higher than charge current, and the second-time charge current is higher than the first-time charge current; in the last charge-discharge cycle, the charge cut-off voltage is not lower than 4.4V, and the charge current is not lower than the second-time charge current. By the step voltage charge-discharge formation method, a stable SEI film can be formed on the surface of a negative electrode in repeated low-voltage charge-discharge processes while a stable CEI film is formed on the surface of a positive electrode, side reaction between electrolyte and an electrode piece can be inhibited, gas generation is reduced, and accordingly the problem of battery swelling is solved. In addition, by the method, structural stability and capacity exertion of the lithium-rich manganese-based positive electrode material under a high voltage can be improved, and the cycle performance and the energy density of the battery are improved as well.

The invention discloses a method for improving the cycle performance and the rate capability of a lithium titanate battery. The main improvement is that additives including a stabilizer and a gas elimination agent are added into an electrolyte of the battery; the temperature is controlled to be 5 to 60 DEG C in a formation process of the battery; 3-6 sections of ladder currents from low to high are adopted for formation charge; the current interval is 0.02 to 1C; the charging time of each stage is 1 to 4 hours; and the upper limit voltage is 1.9 to 3.2V. By the method, the problem of battery swelling is solved effectively by adopting a complete and reasonable formation process and by using the electrolyte additives; the corrosion of substrates of an anode and a cathode is restrained; and therefore, the cycle performance and the rate capability of the lithium titanate battery are improved, and the requirements of a power lithium battery are met.

The invention discloses a method for solving high-temperature flatulence of a lithium titanate negative lithium-ion battery. The method comprises the following steps: fabricating a positive plate and a negative plate; fabricating a battery core; carrying out welding and packaging; carrying out encapsulating and liquid filling; carrying out formation and grading; controlling and designing the capacity of the positive plate when fabricating the positive plate and the negative plate; and designing the capacity of the negative plate; the adopted diaphragm when the battery core is fabricated is a ceramic-coated polyethylene diaphragm; the thickness of the ceramic-coated polyethylene diaphragm is 16-25 microns; high-temperature ageing and re-grading are carried out on the battery after formation in the forming and grading processes; and the high-temperature ageing temperature is 90-120 DEG C. The method disclosed by the invention is simple in process step and high in operability; the problem of flatulence of a lithium titanate battery in a high-temperature cycle can be thoroughly solved; and high-rate charge-discharge capability of the lithium titanate battery is ensured when the high-temperature cycle performance is improved.

The invention discloses a formation aging method for inhibiting the gas expansion of a lithium titanate battery. The formation aging method is used for solving the gas expansion problem of the lithiumtitanate battery generated in the using process. The method comprises three steps of previous standing, formation and aging. In the formation step, the lithium titanate battery after previous standing adopts a constant-current charging manner of first high current and then low current, the battery is charged to a cut-off voltage higher than a working voltage platform and is discharged to a half-charge state after standing. The formation aging method is based on a lithium titanate battery gas production mechanism; the charging manner of first high current and then small current is adopted in the formation process, the lithium titanate material is promoted to form an SEI film in a forced manner under high potential; the battery is discharged in the half-charge state after formation standing, and the battery is placed in a low temperature environment to promote further growth and densification of the SEI film formed in the formation process. The dense SEI film is formed on the surface ofthe anode lithium titanate material, so that the chemical reaction of an electrolyte is prevented at the position of the anode; and the purposes of inhibiting gas production and reducing expansion are reached.

The invention discloses an additive of electrolytic solution of a lithium ion battery. The additive is an estolide type organic substance. The estolide type organic substance is one kind or several kinds of materials in dicarboxylic anhydride, phthalic anhydride and propionic andydride. Because the additive is the estolide type organic substance, the compound gas can be converted into liquid or solid substances through chemical reactions. Thereby, the problems of gas bubbling and gas expansion of the battery can be solved, and the stable performance and the safety performance of the battery can be improved.

The invention relates to the technical field of lithium-ion batteries, and aims at solving the problem of relatively low safety performance of an existing lithium titanate battery. The invention provides a lithium titanate battery with high safety performance. The lithium titanate battery comprises a positive plate, a negative plate, a membrane, an electrolyte and an outer package, wherein an active material on the positive plate is a ternary material; the active material on the negative plate is lithium titanate; a solvent of the electrolyte is organic carbonate; the electrolyte contains a lithium salt, and also contains an electrolyte additive and a gas elimination agent; the electrolyte additive contains one or more of cyanided chain carbonate or cyanided cyclic carbonate; the membrane is a micro-pore thin-film membrane or a non-woven fabric membrane; and the material of the membrane is polyolefin compounded with halloysite particles and carboxymethylcellulose fiber. According to the lithium titanate battery provided by the invention, gas expansion is not easily generated; the membrane has good temperature tolerance and mechanical property, and is not easy to destroy and good in safety; and the lithium titanate battery is suitably used as a power battery.

The invention provides a homogenate coating method for negative lithium titanate. The method comprises the following steps: a, connecting a material storage box, a homogenate tank and a coating chamber into integrated homogenate coating equipment by virtue of a conveying pipeline; b, controlling the humidity in the material storage box and the homogenate tank to be in a range of 0-10% RH; c, adding a homogenate solvent and a negative electrode material into the material storage box, and controlling the humidity in the material storage box to be in a range of 0-10% RH; d, guiding the homogenate solvent and the negative electrode material into the homogenate tank for stirring; e, checking the solid content, viscosity and fineness of the homogenate, and preparing for discharging and coating; f, controlling the ambient humidity of the coating chamber to be 0-30% RH, starting to coat, and baking to obtain a negative plate coil. According to the homogenate coating method provided by the invention, a phenomenon that moisture in a lithium titanate homogenate absorbing environment is in a gel state in the homogenate coating process is eliminated, a gas expansion problem of a lithium titanate battery is reduced to a certain degree, and the electrical properties of the battery are improved.

The invention discloses a liquid water-soluble fertilizer and a preparation method thereof. The liquid water-soluble fertilizer mainly comprises the following components: 13-20% of macroelements, 10-15% of medium elements, 11-16% of trace elements, 12-18% of organic matter, 2-6% of humic acid, 14-18% of potassium fulvic acid, 11-25% of water, and 1-5% of an auxiliary agent. The water-soluble fertilizer of the invention can activate soil, degrade phosphorus and potassium, enhance immunity and resist diseases. Water is saved, and fertilizer is also saved. Water requirement is only 30% of water requirement of a common fertilizer. Manpower cost is greatly saved.

The invention relates to the technical field of lithium ion batteries, in particular to a high temperature resistant lithium titanate battery and a formation and aging method thereof. The lithium titanate battery comprises a positive plate, a negative plate, a diaphragm, an electrolyte and an outer packaging film, wherein an active substance on the positive plate is a ternary material or a mixed material of the ternary material and a lithium salt; an active substance on the negative plate is lithium titanate; the diaphragm is a PE diaphragm; the electrolyte solvent is organic carbonic ester; and LiPF6 is contained inside the electrolyte. By adopting a special material system and the formation and aging technology, the gas production problem of the lithium titanate battery is effectively solved, the high-temperature storage capacity of the lithium titanate battery is improved, and the recycling service life of the lithium titanate battery is prolonged.

The invention relates to the technical field of a lithium battery, in particular to a formation floating charge method for a lithium battery with a Li4Ti5O12 negative electrode. The formation floating charge method comprises the following steps of (1) formation, in which the lithium battery with the Li4Ti5O12 negative electrode is charged with a constant current of 0.05-1C to a cutoff voltage and then is charged with a constant voltage to a cutoff current; (2) primary activation, in which the lithium battery with the Li4Ti5O12 negative electrode is activated in a high-temperature of 50-80 DEG C for 24-72 hours and is allowed to be stood, and vacuum pumping is performed; (3) floating charging, in which the lithium battery with the Li4Ti5O12 negative electrode is alternatively and circularly charged with the constant current by using a small current and a micro current to the cutoff voltage, the alternative cycle frequency is 50-200 times, the small current is a current of 0.05-0.5C, and the micro current is a current of 0.005-0.05C; and (4) secondary activation, in which the lithium battery with the Li4Ti5O12 negative electrode is activated in a high-temperature of 50-80 DEG C for 24-72 hours and is allowed to be stood, and vacuum pumping is performed. The method is simple and is low in cost, the problem of Li4Ti5O12 bubbling is solved on a condition that no over-charging and easiness in operation are ensured, the cycle performance of the battery is improved, and the method has an important significance to promote application and development of the lithium battery.

The invention discloses an anti-inflating inner cover suitable for liquid fertilizer. The anti-inflating cover comprises a cover with a hole and a pulling cover. The cover with the hole comprises a cover body, a sealing ring and a cover bridge; the hole is located in the center of the cover bridge; cavities connected with the hole are further arranged along the two sides of the hole; the pulling cover is sequentially provided with an umbrella-shaped structure, a circular table structure and a cylindrical structure from top to bottom; and the upper surface radius of the circular table structure is larger than the lower surface radius of the circular table structure. The circular table structure and the cylindrical structure penetrate through the hole in the center of the cover bridge to enable the umbrella-shaped structure to be located in the cover body and to be tightly close to the sealing ring, the anti-inflating inner cover is arranged at a mouth of a bottle or a bag containing the liquid fertilizer, when the pressure in the bottle or the bag is increased, the umbrella-shaped structure is pressed upward, the pulling cover is deformed to form a gap between the umbrella-shaped structure and the sealing ring, air is discharged from the cavities between the sealing ring and the cover bridge, and the pressure is gradually lowered; and then the umbrella-shaped structure makes contact with the sealing ring again, so repeatedly, the pressure in the liquid fertilizer bottle is kept in a proper range, and therefore the inflating phenomenon is prevented.

The invention discloses a production process for a self-exhausting waterproof coiled material of a water conservancy project, relating to the field of a waterproof technology of the water conservancy project. According to the process, rubber powder is taken as a main raw material, organic functional clay is taken as an auxiliary material and a polyester filament woven geofabric is taken as a covering body, wherein the preparation mass ratio of the rubber powder to the organic functional clay is 1 to (0.2-0.3); the self-exhausting waterproof coiled material is prepared by procedures of preparing materials, internally mixing, molding and rolling, covering a film, drawing and coiling. According to the process method, the production cost of the waterproof coiled material is reduced; the waterproof and ventilating performance is guaranteed and the tensile strength of the material is improved; the waterproof coiled material is suitable for the water conservancy project and the problem that a composite geomembrane used by the water conservancy project is swollen is solved; the waterproof coiled material produced by the process is simple and convenient to construct and does not need to be welded so that the construction difficulty is lowered greatly and the construction efficiency and the construction quality are improved.

The invention discloses an electrolyte for a lithium ion battery. The electrolyte comprises lithium salt, carbonic ester compounds, an ionic liquid and additives. By selecting a solute and a solvent of the electrolyte and optimizing the ratio of the components of the electrolyte and the addition mode of the ionic liquid and additives and through self-controlled adjustment of parameters of the electrolyte system such as viscosity, freezing point, boiling point, heat stability, chemical stability and the like changing slightly with the change of the electrolyte operating environment, the electrolyte's wettability and compatibility with the positive pole piece and negative pole piece of a lithium titanate lithium ion battery and a diaphragm can be effectively enhanced. In addition, through the synergism between the ionic liquid in the electrolyte and the additives, stability and functionality of the electrolyte can be effectively raised. Thus, high-rate performance of the lithium titanate lithium ion battery is improved, and the problem of battery swelling after multiple circulations is solved.

The invention discloses a pea and soybean milk.The pea and soybean milk is prepared from, by weight, 200-250 parts of soybeans, 150-200 parts of peas, 50-70 parts of petroselinum crispum and 15-20 parts of peanut kernels.Firstly, the soybeans are washed to remove impurities and then put into a soaking container, water is added for immersing the soybeans, table vinegar is dripped into the soaking container, stirring is carried out until the Ph value is 5-6, and soaking is carried out for 8-12 h; then, the soaked soybeans, the peas, the petroselinum crispum and the peanut kernels are put into a grinding machine together, and water is injected for grinding; after grinding is finished, the mixture is led into a milk cooing machine, the temperature is set at 115-125 DEG C, stirring and milk cooking are carried out, after the milk is boiled, cooking continues for 2-5 min, and then high-temperature sterilization and low-temperature filling are carried out.The pea and soybean milk thoroughly solves the flatulence problem, is thick and attractive in color, aromatic and mellow in smell, excellent in taste, reasonable in nutrition matching and especially suitable for being drunk in summer, and has the effects of relieving internal heat and inducing diuresis, expelling toxins and keeping young, clearing away heat and soothing the nerves, and regulating the intestines and stomach.

The invention discloses selenium-enriched soybean milk.The selenium-enriched soybean milk is prepared from, by weight, 300-400 parts of soybeans, 60-80 parts of konjak fine powder, 10-15 parts of peanuts and 5-10 parts of corn kernels; the soybeans are washed clean, impurities are removed, the processed soybeans are put into a soaking container, water is added to enable the soybeans to be immersed into the soaking container, vinegar is dropwise added into the soybean soaking container and stirred till the pH value ranges from 5 to 6, soaking is conducted for 8-24 h, the corn kernels and the peanuts are put into another soaking container to be soaked for 6-8 h, the soaked soybeans, corn kernels and peanuts are put into a grinding machine for grinding through water injection, after grinding is finished, the mixture is led into a soybean milk boiling machine, the konjak fine powder is put into the soybean milk boiling to be stirred to be blended, stirring and boiling are conducted at the set temperature ranging from 115 DEG C to 125 DEG C, high-temperature sterilization is conducted, and low-temperature filling is conducted.According to the selenium-enriched soybean milk, the purpose of enriching selenium is achieved by fully utilizing the situation that the raw materials naturally contain selenium, the soybean milk is rich and attractive in color, sweet, delicious and reasonable in nutrition arrangement, and the effects of removing toxicity, diminishing swelling, discharging waste, keeping youth, relieving cough, reducing sputum and regulating the intestines and stomach are achieved.

The invention discloses soybean milk suitable for being drunk by hypertensive patients. The soybean milk comprises the following raw materials in parts by weight: 450-550 parts of soybeans, 48-60 parts of dragon fruits and 15-20 parts of oat. The soybean milk is prepared by the steps of cleaning the soybeans, removing impurities, putting the soybeans into a soaking container, adding water until submerging the soybeans, dropwise adding table vinegar, soaking for 8-24 hours, peeling the dragon fruits, adding the soaked soybeans, dragon fruit pulp and the oat into a grinding machine, injecting water, grinding, leading into a milk boiling machine, boiling at a set temperature of 115-125 DEG C while stirring, after seriflux is boiled, further boiling for 3-5 minutes, and then carrying out high temperature sterilization and low-temperature encapsulation. According to the soybean milk, the effects are enhanced, meanwhile, the soybean milk has a fused taste of the soybeans and the oat, false boiling and gas expansion factors are eliminated, and the gas expansion problem is thoroughly solved; and after being drunk for a long time, the soybean milk has health functions of reducing blood fat and cholesterol, regulating blood sugar and intestinal tracts, improving immunity and the like, is capable of preventing and treating hypertension and is suitable for being drunk by the hypertensive patients.

The invention relates to a liquid water-soluble fertilizer and a preparation method thereof, and is characterized in that the liquid water-soluble fertilizer contains nitrogen and bovine serum albumin, the content of the nitrogen in the liquid water-soluble fertilizer is greater than 15%, the content of amide nitrogen in the nitrogen is greater than 80%, and the amide nitrogen is provided by urea; the mass ratio of the urea to the bovine serum albumin is (92-98): (2-8). The liquid water-soluble fertilizer can solve the problem of flatulence caused by long-term storage of the liquid high nitrogen fertilizer, and can improve the quick-acting property of the liquid water-soluble fertilizer after basal application.

The present invention relates to a fresh keeping technology for dioscorea opposita thunb, wherein a self-made fruit and vegetable fresh-keeping agent is provided, and comprises, by weight, 0.8-1.2% of citric acid, 0.6-0.8% of potassium permanganate, 1.0-1.8% of bisulfite, 0.5-1.2% of active carbon, 0.6-1.0% of sodium benzoate, 0.2-0.8% of sodium polyacrylate, 0.6-0.8% of sodium 2-phenoxide, and 93-95% of pure water. The fresh-keeping technology comprises: washing dioscorea opposita thunb, sterilizing with ozone, soaking in the fresh-keeping agent, taking out, naturally drying, loading into a fresh-keeping bag filled with an inert gas, and storing at a room temperature. According to the present invention, with the application of the method to perform fresh keeping on the dioscorea opposita thunb, the fresh keeping effect is good, and the problems of mould development, swelling, water loss and the like can be effectively solved; and the used fresh-keeping agent is natural and non-toxic, and is harmless to the human health.

The invention discloses a making method and a processing system of peanut protein oily skin. The making method comprises the following steps: squeezing and crushing peanuts; mixing the squeezed and crushed peanuts with a slurry solvent to obtain slurry; boiling the slurry for the first time; performing slurry-residue separation on a slurry-residue mixture obtained by primary slurry boiling to obtain peanut protein slurry; cooking the peanut protein slurry for the second time; and cooling the peanut protein slurry subjected to secondary cooking to obtain the peanut protein oily skin. The prepared peanut protein oily skin is rich in protein, fat, cane sugar, cellulose and mineral substances such as iron and zinc, light and mellow in flavor, fine and smooth in taste, tough, not easy to break, sweet and fragrant, and free of beany flavor; the content of raffinose, stachyose and other indigestible sugars is low, so that flatulence is avoided after eating, and digestion and absorption are easy; and the water-retaining property is improved, the extensibility of the tissue structure is enhanced, and the finally prepared finished product is thin, soft and glutinous in skin, fine and smooth in taste and moderate in toughness after being rehydrated, has light fragrance of peanut oil and light fragrance of peanuts, and is rich in nutrition.