61results about How to "Increase the number of charge and discharge" patented technology

The present invention relates to a preparation method for modified lithium cobalt oxide capable of being recycled at a high cut-off voltage. The preparation method comprises: preparing a manganese-doped lithium cobalt oxide material according to the conventional method in the field, mixing the obtained lithium cobalt oxide half finished product and an additive such as magnesium oxide, alumina, titanium dioxide, silica, tin dioxide, zirconium dioxide, cerium dioxide and the like according to a certain ratio, calcining for 5-20 h at a temperature of 500-1100 DEG C, and grinding to obtain the modified lithium cobalt oxide product. The preparation method has the following characteristics that: operations are simple, the process is easy to control, cycle performances of the synthesized product are significantly more excellent than cycle performances of the unmodified product at the high cut-off voltage so as to increase the cut-off voltage of the lithium ion battery, and the preparation method is suitable for industrialization manufacturing of lithium ion battery positive electrode materials.

The invention discloses a formation method of a high-capacity power lithium iron phosphate battery. The formation method comprises the steps of: A, injecting an electrolyte in the battery and shelving for a period of time T at normal temperature, and charging after infiltrating a plate and a diagram adequately; B, pre-forming the battery in grades by a certain current A and electric quantity, pre-forming the battery into N grades to charge according to different volumes of the battery, shelving for a period of time T1 after charging each time, and extracting gas inside battery in the shelving process; C, shelving for a period of time T2 in a drying environment, and extracting gas in the battery after shelving; D, carrying out charge-discharge circulation for N1 times by using a certain current A1 in the second formation; E, shelving for a period of time T3 at a certain temperature t; and F, extracting gas and dividing the volume for the battery. With the adoption of the method, a stable SEI (Solid Electrolyte Interphase) film is formed for the battery, so that the charge-discharge times and service life of the battery can be effectively improved.

The invention discloses a chargeable shell lithium ion battery. The chargeable shell lithium ion battery comprises a cathode assembly and an anode assembly, wherein the cathode assembly and the anode assembly are mutually insulated; a winding body installation space is formed between the cathode assembly and the anode assembly; the winding body installation space is internally provided with an electrolyte and a winding body; a cathode lug and an anode lug are led out from the winding body at the position near the center of the winding body respectively; the cathode lug is electrically connected with the cathode assembly; and the anode lug is electrically connected with the anode assembly. By using the winding body of which the lugs are led out at the position near the center, the pulling acting force of the deformation of the winding body in the charging and discharging process for pole pieces is small, so that the number of times for charging and discharging the chargeable battery can be increased, and the service life is prolonged.

The invention discloses a preparation method of an inorganic solid electrolyte membrane, which is used for preparing an inorganic solid electrolyte matrix in an electrode of a lithium battery. A material formulation of the matrix is as follows: a mass ratio of organopolysiloxane resin to lithium phosphate to kieselguhr is (25-30):(3-5):(72-65); the organic solid electrolyte membrane is prepared by inorganic electrolyte slice-slice superposing and polyphenylene sulfide membrane packaging. An inorganic lithium compound obtained by the method disclosed by the invention is uniform in distribution in a matrix membrane, so that charging and discharging performances of a full-solid lithium battery prepared by using the electrolyte are stable, and therefore, the charging and discharging times and the service life as well as the electric capacity are respectively improved by 80%-90% in comparison with the existing lithium battery, and the content of inorganic lithium in the solid electrolyte membrane is 18%-32%. A solid lithium battery prepared by using the electrolyte membrane has the characteristics of long service life, a plurality of charging and discharging times, and large battery capacity.

The invention discloses an end battery structure and a mobile terminal. The battery structure comprises a first cell and a second cell, the first cell is the positive electrode cell of a battery, andthe second cell is the negative electrode cell of the battery; and the first cell is electrically connected with the second cell through a connecting plate, and an included angle of 0-180 DEG is formed between the first cell and the second cell. The battery structure makes the positive electrode cell and the negative electrode cell physically separated through folded cells in order to separate a positive electrode material and a negative electrode material, so the capacity of the battery is improved, the service life of the battery is prolonged, and the occupied area of the battery in a mobilephone is reduced.

The invention provides an industrial uninterrupted seamless switching inverter power supply device for solving a voltage sag problem. The device includes a power supply circuit, an isolation samplingcircuit, a super capacitor group circuit, an RS485 serial communication interface circuit, a CAN bus serial communication interface circuit, a precise full-wave rectification and operational amplification circuit, a data storage circuit, an electromagnetic relay driving circuit, an active low voltage fast AC switching circuit, an H-bridge inverter output circuit, a PWM boosting circuit and a transformer boosting circuit, wherein the power supply circuit includes an AC-DC voltage reduction circuit and a DC voltage stabilizing circuit. The device is advantaged in that the switching speed is fast, the MOSFET fast switching capability is utilized to make the switching time of the power supply to be within 1MS, the device has good versatility, long service life, small size, convenient installation and flexible use, and the key equipment can be protected pertinently.

The invention discloses a water-based conducting resin for a lithium ion battery. The water-based conducting resin is characterized by consisting of the following components by mass percent: 1-5 percent of 8-Hydroxyquiuoline, 25-45 percent of graphite, 15-30 percent of acrylic acid copolymer, 0.5-3 percent of flax oil, 5-20 percent of isopropyl alcohol, 1-5 percent of KH560 and water, and the total mass percentage is 100. The water-based conducting resin has the advantages of environmental protection, high charge-discharge frequency, and easiness in embedding and removing ions.

The invention provides a power supply system comprising an energy conversion device and an energy storing device. The energy conversion device is used for converting the potential energy difference ofa bearing structure into an electric energy when the bearing structure of a lifting appliance falls. The energy storing device is coupled to the energy conversion device and is used for storing the electric energy generated by the energy conversion device when the bearing structure falls. The energy storing device comprises at least one magnetic capacitance module which comprises at least one magnetic capacitor. Since the magnetic capacitor module is added to the system, the electric energy obtained from the energy conversion device by converting the potential energy difference without changing the main structure and design of the traditional lifting appliance, and the electric energy is provided to the lifting appliance for rising , thereby greatly increasing the reuse efficiency of theenergy sources so as to save the energy resources.

The invention discloses a power supply device which comprises an energy storage unit, a first resistance network, a first switching unit and a control unit. The energy storage unit comprises at least one magnetic capacitor, and the magnetic capacitor is provided with a first end and a second end, wherein a reference voltage is provided for the energy storage unit from the first end; the first resistance network is coupled between the first end and the second end; the first switching unit is coupled to the first resistance network; and the control unit is coupled to the first switching unit and used for controlling the state of the first switching unit, wherein the power supply device divides the reference voltage and outputs a plurality of operating tensions according to the conducting state of the first switching unit.

The invention discloses a lithium-air battery mixed type ionic liquid electrolyte and its preparation method, which belongs to the electrolyte preparation technology field. The electrolyte can be obtained by mixing dialkyl pyridines hexafluorophosphate ionic liquid, organic lithium salt with hexafluorophosphoric acid double core annular quaternary ammonium salt under the protective atmosphere of argon, stirring in the vacuum environment and vacuum drying. The electrolyte has the advantages of wide electrochemistry window, high conductivity, small internal resistance and excellent hydrophobicity. The specific capacitance and charge and discharge frequency can be improved by the lithium-air battery produced by the electrolyte, so that the electrolyte has strong practicality and enables large-scale industrial production.

The invention discloses a novel formula battery and a preparation method thereof. In the battery, an additive formula in different proportions is added to a positive pole plate and a negative pole plate, wherein the formula comprises lead powder, sulfuric acid, deionized water, fiber, oak powder, barium sulfate, carbon black, graphene and high-purity graphite. By the novel formula, electrochemical reaction of a storage battery during the working process is more complete, energy is more effectively provided, the capacity is stably improved, moreover, water consumed by reaction in the battery is low, and the water addition frequency is reduced.

The invention relates to a solar energy power accumulating system, which is connected with at least one load unit and comprises a solar panel, an energy accumulating unit, a switch unit and a control unit. The solar panel is used for receiving solar energy and then converting the solar energy into direct current electric energy; the energy accumulating unit comprises at least one magnetic capacitor and used for accumulating the direct current electric energy; the switch unit is coupled between a solar battery and the energy accumulating unit; and the control unit controls whether the switch unit is conducted or not according to the voltage value of the energy accumulating unit, and further controls the energy accumulating unit to accumulate the direct current electric energy.

The invention discloses a battery case having a radiating tube. The battery case comprises a battery case body and the radiating tube having an inner chamber and fixed at the external side surface ofthe battery case body; and a condensation working medium is arranged in the inner chamber of the radiating tube. The invention also comprises a battery having the battery case provided by the invention. The condensation working medium in the inner chamber of the radiating tube can uniformize the heat generated in the battery and timely conducts the heat, so that the charge and discharge frequencyof the battery is increased, and the usage life of the battery is prolonged.

The invention relates to the technical field of charging pile supporting facilities. The invention discloses a water-cooled centralized battery heat management device based on a new energy charging pile. The battery heat management device is used for carrying out battery heat management in the charging process of an electric automobile, and comprises a shell and a heat management module; a liquidinlet collecting and distributing device and a liquid outlet collecting and distributing device are installed on the shell and being connected with a liquid outlet and a liquid inlet of a battery packcooling plate of the electric automobile respectively; and the heat management module is arranged in the shell, and the heat management module is used for cooling or heating cooling liquid in the battery pack cooling plate. The water-cooled centralized battery thermal management device based on the new energy charging pile provided by the invention is matched with the charging pile for use, can flexibly move and serve a plurality of charging piles, provides battery heat management services for different electric vehicles, and realizes resource sharing.

The invention discloses a high-performance nano colloid power battery. The battery comprises an anode plate, a cathode plate, a positive column, a negative column, a separation membrane, electrolyte and a battery shell, and the electrolyte is prepared from the following raw materials, in parts by weight: 180-200 parts of dilute sulphuric acid with the concentration being 47-52%, 4-5 parts of nanofumed silica, 0.02-0.05 part of polyacrylamide, 0.02-0.05 part of polyvinyl alcohol, 0.02-0.05 part of alpha-naphthol acid and 40-50 parts of pure water, wherein the grain size of the nano fumed silica is 7-40nm, and the specific surface area is 175-225m/g. Compared with the prior art, the high-performance nano colloid power battery has the comprehensive properties of being long in service life and high in current discharge, and solves the problems that an existing power battery is insufficient in property and the low temperature starting capability is poor.

The invention relates to a modularized energy storing device, which is designed for a magnetic capacitor energy storing card, and is provided with a magnetic capacitor unit arranged in a shell, a conducting connection interface electrically connected with the magnetic capacitor unit and exposed out of the shell, a charging unit electrically connected with the conducting connection interface, a voltage regulating unit electrically connected with the conducting connection interface, and a control unit which is electrically connected with the conducting connection interface, the charging unit and the voltage regulating unit and can timely control the charging unit to charge the magnetic capacitor unit according to a power signal input by the conducting connection interface or controls the voltage regulating unit to perform boost or buck conversion on the output voltage of the magnetic capacitor unit so as to output a certain voltage to the conducting connection interface. The modularized energy storing device has a standardized size and simultaneously has the advantages of long service life (high charge and discharge frequency), high energy storing density, instant high-power output, quick charge and discharge and the like.

The invention relates to a mixed electrolyte and a preparation method and an application of the mixed electrolyte. The mixed electrolyte consists of an ionic liquid of dialkyl imidazolium-based diaryliodonium salt and an organic lithium salt that are equimolar. The preparation method comprises the steps of: adding N-methyl imidazole and chlorobutane into a container; then adding solvents of cyclohexane and methylbenzene; performing oil bath, rising temperature, refluxing, cooling and layering; pouring the yellow liquid in the upper layer and filtering and weighing the white crystal in the lower layer; placing the white crystal in the container, adding ethyl acetate and acetonitrile, heating, refluxing and filtering, crystallizing at -15-0 DEG C for 4-8h; re-crystallizing the crystallized product to obtain an intermediate body; dropping LiPF6 aqueous solution slowly into the intermediate body, agitating, and standing still, taking the coarse product in the lower layer and adding AgPF6 for reaction, removing white precipitate after reaction so as to obtain the mixed electrolyte. The mixed electrolyte has the advantages of good lyophobic property, simple preparation method and strongpracticality and can be used to large scale industrialized production. The mixed electrolyte used in lithium air battery can improve the energy density and charge-discharge time of the battery.

The invention discloses-70 DEG C lithium ion battery low-temperature electrolyte and a preparation method thereof, and belongs to the technical field of lithium ion battery electrolyte. According to the invention, wide-temperature-range lithium salt lithium difluoro (oxalato) borate is used as a lithium ion donor, fluoroethylene carbonate which has high-pressure oxidation resistance and is beneficial to a negative electrode film-forming agent and a dimethyl sulfite cosolvent which forms effective coordination with lithium ions are added, and an isobutyl formate cosolvent with high adsorption performance is combined; the low-temperature electrolyte with low freezing point, low viscosity and high lithium ion conductivity is obtained, transmission and diffusion of lithium ions at low temperature are effectively improved, a stable SEI interface is constructed, formation of lithium dendrites is inhibited, and the low-temperature electrolyte can stably and safely operate at the temperature of 70 DEG C below zero.

The invention discloses a manufacturing process for a penetrated aluminum foil. The objective of the invention is to overcome the problems that the resistance of positive electrodes increases due to usage of considerable adhesives (high-molecular non-conductive substances) for bonding of aluminum foils and positive electrodes, that the adhesives are poor in boding force, that the service life of lithium ion batteries is severely influenced by high temperature resulting from great resistance in long-term charging and discharging, that positive materials on the surfaces of the aluminum foils fall off after long-term usage and the like in the prior art. To overcome the above problems, the surface of an aluminum foil is subjected to coarsening at first, and then laser perforation of the aluminum foil is carried out; and after usage of the penetrated aluminum foil, the above problems are solved, and the service life of lithium ion batteries is substantially prolonged.