31results about How to "Increase the number of charge and discharge cycles" patented technology

The invention relates to a lithium metal battery negative electrode dendritic crystal inhibitor and a using method thereof. Before assembling of a lithium metal battery, a lithium metal negative electrode is subjected to dipping pretreatment through the lithium metal battery negative electrode dendritic crystal inhibitor, and the lithium metal negative electrode can react with polyamine in a solution, so that a Li-N-CX composite layer is formed; after assembling of the lithium metal battery, an SEI (Solid Electrolyte Inactivation) protective film which is higher in Li3N content and is good instability can be formed when the negative electrode is charged at the first time, so that dendritic crystal growth of a lithium negative electrode under large current can be inhibited, and depositionof the lithium metal negative electrode can be more uniform. The lithium metal battery negative electrode dendritic crystal inhibitor disclosed by the invention is capable of inhibiting the growth oflithium dendritic crystal of the lithium metal negative electrode, and formation of dead lithium can be reduced; under a large-current charging and discharging condition of a lithium metal electrode battery treated by the lithium metal battery negative electrode dendritic crystal inhibitor, the number of charge-discharge cycles is obviously increased.

The invention relates to an additive for manufacturing ultrathin electrolytic copper coil, which is characterized in that the additive is prepared by 300-800 milligram of acid amide, 20-40 milligram of casein, 5-10 milligram of tetrahydro-thiazoles sulfur copper, 5-10 milligram of polyethyleneglycol, and 40-50 milligram of gelatin which are added into per 10000 liter deionized water and well blended. The electrolytic copper coil with high performance ,which is manufactured by the additive and used in lithium ion batteries with high capacity, has basically consistent double sided structure, namely, double sided light copper coil; the thickness of the copper coil is thin; the actually measured thickness & is less than equal to 12micron; the crystal structure of the rough surface is uniform, smooth and compact; the metal density is close to the theoretical density of pure copper; the profile tolerance of the rough surface Rz is less than 2 micron; and the elongation is larger than 5%; the tensile strength is larger than 400N / mm2; the thickness extreme difference of the copper coil with the same mass area ratio is less than equal to 0.5 micron.

The invention discloses a gelled electrolyte of a lead-acid storage battery and a preparation method thereof. The electrolyte comprises the following components: sulphuric acid, silicon dioxide, sodium sulfate, polyacrylamide, polyacrylate sodium, sodium molybdate, calcium molybdate, magnesium molybdate, sodium tungstate, potassium sulfate and deionized water; the method comprises the following steps of: adding the sodium sulfate into dilute sulphuric acid to obtain a dilute sulphuric acid mixed solution, then adding the dilute sulphuric acid mixed solution into a sodium silicate solution to obtain a silicon dioxide colloidal suspension, next firstly adding the sodium molybdate, the calcium molybdate, the magnesium molybdate and the sodium tungstate into a vapor-phase silicon dioxide nano-powder suspension to obtain a nano vapor-phase silicon dioxide powder suspension, then preparing a polyacrylamide solution and a polyacrylate sodium solution, then firstly uniformly mixing the silicon dioxide colloidal suspension and the nano vapor-phase silicon dioxide powder suspension, and then adding the polyacrylamide solution and the polyacrylate sodium solution into the mixed suspension to prepare the gelled electrolyte of the lead-acid storage battery. The gelled electrolyte of the lead-acid storage battery can be widely used in a storage battery with the capability of more than 20AH.

The invention discloses lithium ion secondary battery positive electrode materials of a kind of aromatic heterocyclic ketone compounds. The lithium ion secondary battery positive electrode materials of the aromatic heterocyclic ketone compounds are ketone compounds taking an aromatic heterocyclic ketone or ketone quinine as an electrochemical oxidation reduction position point. The lithium ion secondary battery positive electrode materials comprise aromatic heterocyclic ketone derivatives and aromatic heterocyclic ketone quinine derivatives, the aromatic heterocyclic ketone derivatives and the aromatic heterocyclic ketone quinine derivatives take part in the preparation of an electrode in the mode of micromolecules or clusters in an amorphous state or in the mode of micro crystal and nanometer crystal in the phase state of alpha, beta and gamma or in the mixed phase state, and in the cluster form of the aromatic heterocyclic ketone derivatives and the aromatic heterocyclic ketone quinine derivatives, corresponding structural units are directly connected through C-C keys or a multi-key ring-combination structure. The lithium ion secondary battery positive electrode materials are provided with a dicarbonyl birdging conjugate aromatic framework, and comprise the following structure shown in the formula: . The lithium ion secondary battery positive electrode materials of aromatic heterocyclic ketone compounds has the advantages that (1) structure is abundant, and materials are low in cost and easy to obtain; (2) energy density, multiplying power density and cycling stability are high; (3) 80% of initial capacity is still kept after cycling is conducted for 150 weeks.

The invention provides a power source used for an electric vehicle. The power source comprises a high-voltage battery and a direct current converter. The direct current converter comprises a power source input anode end, a power source input cathode end, and an enable signal end used for starting the direct current converter. The anode end of the high-voltage battery is electrically connected with the power source input anode end. The cathode end of the high-voltage battery is electrically connected with the power source input cathode end. A start controlling relay is arranged between the anode end of the high-voltage battery and the enable signal end. The direct current converter comprises a direct current converting module, an equipment power supply power source output end, and a normal power source output end. The normal power source output end can still provide power for constant electric equipment under the condition that the direct current converting module does not work.

The invention belongs to the technical field of storage batteries, and specifically relates to a lead plaster composition of a positive electrode of an internally formalized storage battery. The lead plaster composition of the positive electrode of the internally formalized storage battery is prepared from the following raw materials in parts by weight: 990-1010 parts of lead powder, 0.5-1.5 parts of fibers, 0.5-1.0 part of phosphoric acid, 1-2 parts of antimonous oxide, 0.7-1.2 parts of zinc oxide, 0.5-1.5 parts of aluminum oxide, 0.5-0.8 part of ammonium hydrogen carbonate, 0.3-0.5 part of cerium hydroxide, 0.7-1.5 parts of tin monoxide, 110-130 parts of water and 80-90 parts of dilute sulphuric acid. The lead plaster composition of the positive electrode is improved, so that capacity attenuation of the internally formalized battery in the early stage is inhibited, and the service life of deep circular discharge of the battery is prolonged.

The invention discloses a preparing method of a nanotube-nickel-nickel cobalt silicate catalyst. The preparing method includes the following steps: (1) dispersing a carbon nanotube in a surfactant, adjusting the pH to 10-14, and adding a silicon source to obtain a carbon nanotube-SiO2 coaxial nuclear shell nanotube; (2) adding nickel precursors and cobalt precursors into the carbon nanotube-SiO2 coaxial nuclear shell nanotube, adjusting the pH to 8-13, and preparing a carbon nanotube-nickel cobalt silicate coaxial nuclear shell nanotube at the temperature of 50-220oC; (3) reducing the carbon nanotube-nickel cobalt silicate coaxial nuclear shell nanotube at the temperature of 300-800oC in a 5% nitrogen atmosphere to obtain the carbon nanotube-nickel-nickel cobalt silicate coaxial nuclear shell catalyst. The obtained catalyst has the advantages of high specific surface area, high catalytic activity in oxygen evolution reaction, high catalytic activity in oxygen reduction, high electric conductivity, low cost and the like; when the catalyst serves as an electrode material for lithium oxygen batteries, by-products such as lithium carbonate can be inhibited, and both the battery discharging capacity and the cycle index are high.

The invention discloses a lithium battery liquid injection system and a lithium battery liquid injection method. The lithium battery liquid injection system comprises a conveyor and a working frame for fixing the conveyor, the system also comprises a liquid injection device, a charging device and a vacuumizing device, and trays are arranged on a conveyor belt of the conveyor at intervals; and a plurality of battery cells are placed on each tray. According to the liquid injection method of the system, reasonable liquid injection and vacuumizing times are adopted, and after the charging procedure is added, the chemical electrolyte reacts in advance, so that gas in the battery is effectively discharged, the internal pressure of the battery is reduced, the battery is safer, the battery capacity is increased, the circulating charging and discharging times are increased, and the service life is prolonged.

The invention provides an aircraft and a structure battery component of the aircraft, and belongs to the technical field of the aircraft overall design. The structure battery component can play the function of bearing force and / or storing power at the same time, thereby effectively reducing the total weight when the structure and the battery are mutually independent; the structure battery component can be applied to the aircraft to realize the weight reducing of the aircraft structure system and the battery system. The aircraft is the aircraft with the structure battery component; one structure battery component comprises wing ribs on at least two ends and skin at the periphery; the wing rigs are arranged at two ends of the skin; the skin is at least a multi-layer board with one function overlay; the function overlay has a bearing function, and further has a power supply and / or power storage function; the designability of the composite material structure is sufficiently utilized, the force-bearing structure and the power supply and / or power storage battery are integrated; the structure battery component with the force-bearing, the power supply and / or power storage functions is usedfor realizing the lightweight of the aircraft, and more task load weight can be gotten in return, and the aircraft performance is improved.

The invention discloses a charging and discharging control and management method and device for SC-Li-SC hybrid energy storage, and belongs to the field of hybrid energy storage. The device comprisessuper capacitors, a rechargeable battery, a voltage stabilizing device, a current sensor, and a controller. The method comprises a method of smoothing charging power with strong randomness and large fluctuation amplitude, a method of judging whether a single super capacitor finishes charging the rechargeable battery, a method of switching the super capacitors to enable the super capacitors to performing charging and discharging efficiently, and a method of realizing the approximate voltage-stabilizing discharging of the rechargeable battery. The current sensor is used for detecting the currentwhen the super capacitors charge the rechargeable battery; the controller controls the working states of the super capacitor SC1 and the super capacitor SC2 according to the current between the supercapacitors and the rechargeable battery. According to the charging and discharging control and management method and device of the invention, through a corresponding control strategy, a whole hybridenergy storage device can stably and safely charge and discharge energy under the conditions of unstable new energy generation power and large fluctuation amplitude by utilizing respective performanceadvantages of the super capacitors and the rechargeable battery.

The invention relates to a method for synchronously roughening and solidifying both surfaces of an electrolytic copper foil and equipment thereof, which belong to the technical field of electrolytic copper foils. The technical key point is that: corresponding anode plates are arranged on a smooth surface and a rough surface and electrolyte flows through the space between the electrolytic copper foil and the anode plates when the electrolytic copper foil passes through a roughening groove and a solidifying groove so as to perform electroplating copper precipitation treatment on the smooth surface and the rough surface of the electrolytic copper foil synchronously at a time, wherein the electroplating anode plates in the roughening groove and the solidifying groove of the used equipment are distributed in the middle and on the front side of a groove body. Compared with the prior art, the method for synchronously roughening and solidifying both surfaces of the electrolytic copper foil and the used equipment thereof have the advantages that: the smooth surface and the rough surface of the copper foil can be synchronously electroplated at a time, so that production efficiency is improved, and energy consumption is reduced.

The invention discloses a lead-acid storage battery colloidal electrolyte and a preparation method thereof. The electrolyte consists of the following components: sulfuric acid, silicon dioxide, sodium sulfate, polyacrylamide, sodium polyacrylate, sodium molybdate, calcium molybdate, magnesium molybdate, sodium tungstate, potassium sulfate and deionized water; method steps It is: add potassium sulfate to dilute sulfuric acid to obtain a dilute sulfuric acid mixed solution, then add it to a sodium silicate solution to obtain a silica colloidal suspension solution, and then add sodium molybdate to the fumed silica nanopowder suspension , calcium molybdate, magnesium molybdate and sodium tungstate to obtain nano fumed silica powder suspension solution, and then prepare polyacrylamide solution and sodium polyacrylate solution, and then, first mix silica colloidal suspension solution and nano vapor phase The silicon dioxide powder suspension solution is mixed uniformly, and then polyacrylamide solution and sodium polyacrylate solution are added thereinto to prepare lead-acid battery colloidal electrolyte. It can be widely used in storage batteries with a capacity above 20AH.

The invention provides an acid and glue pouring machine for accumulators and relates to the glue and acid pouring machine for the accumulators, which is used for quantitatively pouring glue and acid in accumulator production. The acid and glue pouring machine for the accumulators comprises a motor controlled by a microcomputer, wherein the output end of the motor is connected with a lifting shaft which is connected with an active plate; the active plate is provided with a plurality of hollow amount-adjusting shafts; the lower part of each amount-adjusting shaft is provided with a quantitative hammer matched with the amount-adjusting shaft; the amount-adjusting shaft extends into the hollow space of the quantitative hammer; and the quantitative hammer is fixed on a machine frame. In the invention, the motor on the top of the glue pouring machine is effectively controlled by the microcomputer to accurately control the pouring amount of glue. The glue pouring machine of the accumulator provided by the invention successfully performs quantitative control over the pouring amount of glue in the accumulators, overcomes the defect of inconsistent glue amount of the accumulators in a glue pouring process, effectively reduces the error of the glue pouring amount and prolongs the service life of the accumulators.

The invention provides a bifunctional oxygen electrocatalyst taking a hollow carbon nanotube as a carrier and preparation. A dopamine hydrochloride coated halloysite nanotube as a precursor, a hollow carbon nanotube is acquired through heat treatment and acid pickling, then nickel-cobalt metal oxide is added, a NiCo-LDH nanosheet is grown and formed on the surface of the hollow carbon nanotube carrier, after heat treatment, a highly-ordered hollow NC@ NiCo2O4 nano composite material is formed and is used as a catalyst with oxygen reduction performance and oxygen evolution performance in a metal-air battery. The invention also provides an application of the difunctional oxygen electrocatalyst in the metal-air battery. According to the bifunctional oxygen electrocatalyst, the halloysite nanotube and the dopamine hydrochloride are combined to construct the nitrogen-doped hollow carbon nanotube, and the metal oxide NiCo2O4 and the hollow carbon nanotube are combined into a whole so that the catalytic activity of a catalyst ORR and the catalytic activity of a catalyst OER can be remarkably improved, a noble metal oxygen electrocatalyst is replaced, the cost of the catalyst and a metal-air battery is reduced, and good commercial application prospects are realized.

The invention discloses a high-energy-storage power battery and a preparation method thereof. The high-energy-storage power battery is formed by assembling a positive electrode part, a negative electrode part, electrolyte and a diaphragm. The positive electrode part, the diaphragm and the negative electrode part are sequentially arranged from bottom to top, and the positive electrode part comprises a positive electrode piece protective layer, a positive electrode active substance layer and a positive electrode piece which are sequentially stacked from bottom to top. The negative electrode partcomprises a negative electrode plate, a negative electrode active material layer and a negative electrode plate protective layer which are sequentially stacked from bottom to top, the positive electrode plate comprises a positive electrode part base material and a carbon composite material, the negative electrode plate comprises a negative electrode part base material and a carbon composite material, and the positive electrode active material layer comprises lithium nickel cobalt manganate, lithium iron phosphate and high-specific-volume tantalum powder. The negative electrode active materiallayer includes a carbon-silicon composite material. The high-energy-storage power battery disclosed by the invention can achieve the effects of no short-circuit fault, no melting combustion fault andno burning explosion fault, the charging target value is more than 85% of the rated capacity within 15-30 minutes, and the minimum charging and discharging cycle is more than 3000 times.

The present invention provides a preparation of a bifunctional oxygen electrocatalyst with hollow carbon nanotubes as a carrier. After the hollow carbon nanotubes are prepared by heat treatment and pickling, the dopamine hydrochloride-coated halloysite nanotubes are used as a precursor. Add nickel-cobalt metal oxide, grow NiCo‑LDH nanosheets on the surface of hollow carbon nanotube support, and form highly ordered hollow NC@NiCo after heat treatment 2 o 4 Nanocomposites as catalysts with oxygen reduction and oxygen evolution properties in metal-air batteries. The present invention also provides the application of the above bifunctional oxygen electrocatalyst in a metal-air battery. The bifunctional oxygen electrocatalyst of the present invention constructs nitrogen-doped hollow carbon nanotubes by combining halloysite nanotubes and dopamine hydrochloride, and the metal oxide NiCo 2 o 4 Combined with hollow carbon nanotubes, it can significantly improve the catalytic activity of catalyst ORR and OER, replace noble metal oxygen electrocatalysts, reduce the cost of catalysts and metal-air batteries, and has better commercial application prospects.

The invention relates to liquid flow energy-storing batteries, in particular to an ion-exchange membrane for liquid flow energy-storing batteries, and a liquid flow energy-storing battery pack. The ion-exchange membrane consists of two parts, wherein one part is a cation-exchange membrane, and the other part is an anion-exchange membrane, and two parts are connected or compounded into an integralion-exchange membrane by the method of hot-pressing, blade coating, impregnating-drying and the like. The mutual migration of electroactive ions in positive and negative electrolyte solutions can be balanced or prevented by adopting the ion-exchange membrane so as to keep the basic balance of the electroactive ions on two sides of a battery. By adopting the liquid flow energy-storing battery pack, the charge-discharge capacity can be basically kept to have no attenuation, and the number of charge-discharge cycles is increased with no auxiliary equipment.

The invention discloses a preparing method of a nanotube-nickel-nickel cobalt silicate catalyst. The preparing method includes the following steps: (1) dispersing a carbon nanotube in a surfactant, adjusting the pH to 10-14, and adding a silicon source to obtain a carbon nanotube-SiO2 coaxial nuclear shell nanotube; (2) adding nickel precursors and cobalt precursors into the carbon nanotube-SiO2 coaxial nuclear shell nanotube, adjusting the pH to 8-13, and preparing a carbon nanotube-nickel cobalt silicate coaxial nuclear shell nanotube at the temperature of 50-220oC; (3) reducing the carbon nanotube-nickel cobalt silicate coaxial nuclear shell nanotube at the temperature of 300-800oC in a 5% nitrogen atmosphere to obtain the carbon nanotube-nickel-nickel cobalt silicate coaxial nuclear shell catalyst. The obtained catalyst has the advantages of high specific surface area, high catalytic activity in oxygen evolution reaction, high catalytic activity in oxygen reduction, high electric conductivity, low cost and the like; when the catalyst serves as an electrode material for lithium oxygen batteries, by-products such as lithium carbonate can be inhibited, and both the battery discharging capacity and the cycle index are high.

The invention relates to a lithium metal negative electrode dendrite inhibitor and a use method thereof. Before the lithium metal battery is assembled, the lithium metal negative electrode is impregnated with the lithium metal negative electrode dendrite inhibitor for pretreatment, and the metal lithium negative electrode and the polyamine in the solution reaction to form a Li-N-CX composite layer; after assembling the battery, a higher content of Li can be formed when the negative electrode is charged for the first time 3 N, and has a good stability of the SEI protective film, thereby inhibiting the dendrite growth of the lithium negative electrode under high current, making the metal lithium negative electrode deposition more uniform. The lithium metal battery negative electrode dendrite inhibitor of the invention can inhibit the growth of lithium dendrites in the lithium metal battery negative electrode, and reduce the formation of "dead lithium". The number of charge and discharge cycles of the lithium metal electrode battery treated according to the invention has been significantly improved under the condition of high current charge and discharge.

According to a lead storage battery capable of being normally started in a low charge state, the lead storage battery is a battery of a valve control sealing structure, the needle penetration of positive electrode lead paste is 15-19 mm, and the positive electrode lead paste comprises, by weight, 950-1050 parts of lead powder, 112-117 parts of purified water, 3-5 parts of auxiliary materials, 85-95 parts of dilute sulfuric acid and 1.0-2.6 parts of short fibers. By adjusting the addition amount of water and acid in the positive lead paste, the penetration of the positive lead paste is controlled to be 17 + / -2 mm, the deep cycle life of the battery is prolonged, and the battery still has good starting capability after 209 times of deep discharge cycles.

The invention discloses a preparation method based on a three-dimensional graphene / nickel hydroxide composite electrode material. The present invention first adopts the chemical vapor deposition method to grow graphene on the three-dimensional copper-nickel alloy, then uses the mixed solution of ferric chloride and hydrochloric acid to remove the alloy substrate, and finally, immerses the three-dimensional graphene in the mixed solution of nickel chloride and urea, Nickel hydroxide is grown on three-dimensional graphene to prepare a three-dimensional graphene / nickel hydroxide composite electrode material. The prepared three-dimensional graphene / nickel hydroxide composite electrode has ultra-high specific surface area, high storage capacity, and multiple ion transport channels, which can effectively improve the charge transmission efficiency. The invention provides a new idea for the preparation of the electrode material of the energy storage element, and can be used for preparing the composite electrode of the supercapacitor, and can also be used for preparing the composite electrode of the battery.

The invention provides a buffer charging circuit of a lithium battery. The buffer charging circuit comprises a charger interface, a battery interface, a charging circuit connected with the charger interface and the battery interface, a buffer timing circuit and a supplementary circuit. The charging circuit comprises a low-current charging circuit body formed by connecting a diode and a current limiting resistor in series and a high-current charging circuit body formed by connecting a diode and a normally open contact of a relay in series. The buffer timing circuit is an RC timer, and the normally open contact of the relay in the high-current charging circuit body is controlled to be closed by a triode. The supplementary circuit comprises a battery charging voltage detecting unit and a supplementary unit enabling the triode in the buffer timing circuit to be disconnected. The buffer charging circuit has the advantages that the problem that the lithium battery is charged with high currents instantly when the battery is in an undervoltage and over discharge state is solved, and the problem that when the lithium battery is charged with the high currents, virtual full charging is caused by ripples of charging voltages is solved; the service life of a power source is prolonged, and the number of cycles of charging and discharging is increased.

A class of anode materials for lithium ion secondary batteries of aromatic heterocyclic ketones, which are ketone compounds with aromatic heterocyclic ketones or ketoquinones as electrochemical redox sites, including aromatic heterocyclic ketones and aromatic heterocyclic ketoquinones Derivatives, this type of compound participates in the preparation of electrodes in the form of small molecules or polymers in an amorphous state or in the form of micro-crystals and nano-crystals with α, β, γ and other different phases or mixed phases. , the corresponding structural units are directly connected by C-C bonds or multi-bond and ring structures. The material is a material with a dicarbonyl bridged conjugated aromatic skeleton, and has the following structure: (1) rich in structure, cheap and easy to obtain; (2) high energy density, rate power density and cycle stability ; and (3) the advantages of maintaining 80% of the initial capacity after 150 cycles.

A lithium secondary battery, and more particularly, to a lithium secondary battery having improved performance by minimizing the content of impurities such as sodium in the battery.

The invention relates to the technical field of battery cathode materials and especially provides a preparation method of a lithium cobalt nickel manganese oxide cathode material. By selecting the rawmaterials during preparation of the lithium cobalt nickel manganese oxide cathode material and reasonably selecting and proportioning water solutions and organic solvents during treatment, the performance of the cathode material is effectively improved. The cathode material has stable charge-discharge property and low capacity attenuation rate, is increased in cyclic charge-discharge times and isprolonged in service life.

The invention discloses an adjustable water-soluble battery adhesive, which is prepared from the following raw materials in parts by weight: 2 to 5 parts of aliphatic dianhydride, 0.1 to 1 part of aromatic diamine, 15 to 20 parts of solvent and 1.5 to 2.5 parts of catalyst. According to the present invention, the oxygen group substituted biphenyl diamine is adopted as the aromatic diamine, such that the soft and hard chain segment structure distribution of the polyimide adhesive can be regulated and controlled, the compatibility with the aliphatic dianhydride can be increased, the adhesive can form the compact membrane structure, and the interface impedance of the battery can be reduced; according to the present invention, by using the aliphatic dianhydride and the 1, 2, 3, 4-tetrahydro-1-naphthalenesuccinic acid dianhydride, the flexibility of the polyimide is improved, the good mechanical stability and the appropriate viscosity are provided, and when the polyimide is applied to the negative electrode of the battery, the cycle performance of the battery under the high current density charge-discharge condition is improved, and the influence of the rapid charge operation on the service life of the battery is reduced.