181results about How to "Fast charging and discharging" patented technology

The invention provides a heating atomization electronic cigarette using capacitances to supply power, which comprises a power supply part, a cigarette body part and a hollow cigarette holder part, wherein the power supply part comprises an indicator light, a pair of electrode connection-pegs and a lead connection-peg, the indicator light is arranged at the back end of a power supply, and the electrode connection-pegs and the lead connection-peg are arranged at the front end of the power supply; the cigarette body part comprises a pair of electrode plug interfaces, a lead plug interface, a control circuit module, a heating atomization device, a liquid suction head and a nicotine reservoir, the electrode plug interfaces and the lead plug interface are arranged at the back end of a hollow cigarette stem, and the control circuit module, the heating atomization device, the liquid suction head and the nicotine reservoir are sequentially arranged in the hollow cavity of the hollow cigarette stem; a sponge body is arranged in the nicotine reservoir, and a liquid inlet is arranged on the wall of the nicotine reservoir; the two ends of the liquid suction head are respectively contacted and connected with the heating atomization device and the sponge body, and the power supply part and the cigarette body part can be separated or connected by the electrode connection-pegs, the lead connection-peg, the electrode plug interfaces and the lead plug interface in a plug-in way; and the front end of the cigarette body is in plug-in or threaded connection with the back end of the hollow cigarette holder, and the power supply, the indicator light, the control circuit module and the heating atomization device are sequentially and electrically connected.

The invention discloses a method for preparing a lithium ion battery positive electrode material. The method comprises the following steps: preparing a monodisperse graphene solution with consistent flake diameter size and good dispersion in an ultrasonic oscillation manner; and transferring the graphene solution into a high-shear emulsifying homogenizer for performing shearing dispersion, and filling the sheared graphene solution and a positive active material into a zirconia ball milling tank together for performing ball milling and mixing. The graphene solution is mixed with the positive active material in a mechanical ball milling manner, so that the graphene can be inlaid into or coated with positive active material granules, an excellent bonding interface can be formed, and the positive active material granules are refined; and therefore, the material is uniform, and the rate capability and consistency of the material are improved. Finally, the positive slurry subjected to ball milling is dried, ground and screened so as to obtain the positive electrode material powder.

The invention relates to a preparation method for different carbon fibers / a cobalt hydroxide electrode and a solid-liquid composite electrode system. By means of pretreatment and modification of different carbon fibers, the carbon fibers serve as a substrate, composite of metal oxide or hydroxide and the carbon fibers are realized by the electrochemical deposition, and a solid electrode is obtained and has high specific capacitance in the alkaline aqueous solution. Redox substances are added into the alkaline aqueous solution, a composite electrode system that the solid electrode and liquid-phase electrolyte supply the pseudocapacitance jointly is obtained. The composite electrode system has ultra-high specific capacitance, is applied in supercapacitors, and has the advantages of ultra-high energy density, high power density and long service life. The specific capacitance of the composite electrode system can be adjusted by changing the concentration and volume of the redox substances, and the energy density and power density of the supercapacitors can be further changed to meet different using requirements.

A servo press control system comprises a servo press. The servo press comprises a servo motor, a servo controller, a transmission mechanism, a sliding block, a workbench and a grating ruler, wherein the servo controller is in communication connection with a movement controller through a network, and an I/O interface module, an operation panel and a human-machine interface are connected to the movement controller; the input end of the servo controller is connected with a capacitive energy storage device, and the output end of the servo controller is connected with the servo motor; the servo motor is connected with the transmission mechanism; the sliding block is connected with the transmission mechanism; and the human-machine interface is in communication connection with the movement controller. According to the servo press control system, requirements for different technological curves for movement of the sliding block can be met according to different working conditions, and the torque requirement of the sliding block in a certain position is met; and the stroke of the sliding block can be adjusted according to different workpieces, and the sliding block does not need to move to the top dead center every time in all cycles, so that the cycle time is shortened, meaningless stroke is minimized, and productivity is greatly improved.

The invention provides a 3D network pore structure super-capacitor carbon and a preparation method thereof. The preparation method comprises the following steps of: mixing a wooden raw material with ZnCl2, activating, washing, and recycling ZnCl2 so as to obtain AC-Zn; then mixing AC-Zn with KOH, activating, washing, recycling KOH, and etching well-developed micropores in mesopores and macropores so as to obtain AC-Zn-K; finally performing refining treatment on AC-Zn-K by use of high-temperature water vapor, opening pores with openings sealed by wood tar carbon residue particles, and eliminating organic carbon particle residues in pore canals of activated carbon, so as to obtain 3D network structure activated carbon with mutually communicated internal pores. The activated carbon prepared by the method has the advantages that the internal pores are mutually communicated, so that the internal resistance is less, and electrolyte ions can get in and out of the pores freely; during charging, an electrolyte rapidly enters into the pores of the activated carbon so as to form a double electrode layer; during discharging, the electrolyte ions are completely evacuated, and the pore canals are clean, so that the charging and discharging speeds of a capacitor are obviously improved.

Resistance quick adjustable conductive polymer (CP) / polymerized electrolyte solid (PES) composite membrane is CP / PES composite membrane by using CP solid membrane as anode material with polyelectrolyte membrane composed of polyvinylidene fluoride (PVDF), polycarbonate (PC), and lithium perchlorate (LiClO4) being compounded, or a kind of solid admixture membrane. The disclosed CP / PES composite membrane or admixture membrane can extend to be as anode layer of lithium ion cell of solid electrolyte thin film or polyelectrolyte layer to raise speed for charging / discharging cell effectively so as to possess wide foreground of application. After DC voltage is applied to the solid composite membrane, mutation of conductivity generates within short time so as to be able to apply to areas with special requirements. The invention also discloses preparation method.

The invention discloses a hybrid super capacitor and a manufacturing method thereof. According to the hybrid super capacitor and the manufacturing method thereof, a pseudo-capacitor mechanism and an electric double-layer capacitor mechanism are coordinately combined in an energy storage device, carbon materials are used as positive electrode electroactive materials, iron oxide materials are used as negative electrode electroactive materials, ionic liquid is used as electrolyte, and the hybrid super capacitor is assembled. The hybrid super capacitor has the double characteristics of an electric double-layer capacitor and a pseudo-capacitor and has the advantages of being high in charging and discharging speed, large in power density, small in internal resistance, long in cycle life and the like, and the hybrid super capacitor also has the advantages of being high in capacity, high in average voltage and large in energy density.

The invention belongs to the technical field of hybrid electric vehicles, and particularly relates to a hybrid electric vehicle using a super-capacitor accessory power system. The hybrid electric vehicle using the super-capacitor accessory power system adopts parallel-connection power assembly structural style. A power system is composed of a power source system, a motor and an engine. The power source system is composed of a super-capacitor die set and a power source control system. The super-capacitor die set is connected with the motor through a direct-current (DC)/ alternating current (AC) module. The super-capacitor die set is composed of super capacitor monomers with the number of 100-200 in a series-connection mode. The power resource control system transmits signals through a controller area network (CAN) trunk. A control unit provides a hybrid power solution for a vehicle according to different collecting values of sensor and vehicle requirements.

The invention discloses a two-way converter station charge-discharge system used for charging and discharging of an electric vehicle. The system comprises K AC/DC rectifier modules or module groups used for charging K battery boxes correspondingly, and further comprises one inverter module or inverter module group, wherein K is larger than 1; a DC input port of the inverter module or inverter module group is connected with the positive electrodes and the negative electrodes of the battery boxes corresponding to a group of switches through the group of switches; each battery box is provided with a corresponding batter management system; a main control communication unit is respectively connected with all the AC/DC rectifier modules or module groups and all the battery management systems; during charging, all the switches are off, and when a certain battery box discharges, a corresponding switch is on; and charging and discharging can be controlled through the switches, so that investment is saved and charge-discharge speed and utilization rate of the whole system are improved.

The invention discloses a preparation method of a super capacitor. The preparation method comprises the following steps: 1) preparing activated carbon by utilizing overdue starch fermented food, wherein the step 1) comprises the step 101) carrying out carbonization treatment, the step 102) carrying out grinding to obtain carbon powders, the step103) adding alkaline activators, the step 104) carrying out high-temperature drying and activation, the step 105) carrying out acid washing and water washing to remove the alkali in the carbon powders, and the step 106) carrying out drying; 2) preparing active substance electrode sheets of the super capacitor by utilizing the prepared activated carbon; and 3) constructing the super capacitor. The beneficial effects are that the overdue starch fermented food is utilized to prepare the activated carbon material which has high specific surface area and high adsorption performance, and the material is utilized as the electrode sheets to construct the super capacitor; the prepared super capacitor is quick in charging/discharging speed, large in capacitance and good in circulation charging/discharging performance; the preparation method provides an environmentally-friendly and economical processing method for the overdue starch fermented food; and the method and the prepared super capacitor have significant practical value and a wide application prospect.

The invention relates to a method for preparing a double-electric-layer capacitor. The traditional double-electric-layer capacitor can not fully develop the characteristic of rapid electricity charge and discharge of the double-electric-layer capacitor. The method provided by the invention comprises the following steps: firstly mixing raw materials and an activator, fusing and reacting in a low-temperature reacting furnace, then reacting in a high-temperature reacting furnace, and carrying out rinsing, acid washing and vacuum drying on carbon materials after high-temperature reaction, thereby preparing powder activated carbon; then respectively mixing one of the powder activated carbon, RuOx, manganese oxide and nickel oxide with an additive and a bonding agent, and pressing and molding together with current collectors, thus obtaining a double-electric-layer electrode; and finally putting one of RuOx, manganese oxide and nickel oxide electrodes and an activated carbon electrode into a container with electrolyte, thus obtaining the double-electric-layer capacitor. The electrode of the capacitor provided by the invention has higher specific surface area and microporosity. The capacitor prepared by the invention has higher electricity charge and discharge speed on the basis of higher specific capacitance.

The invention provides a petroleum fracturing direct-current transmission power system. The system comprises a power generation subsystem, a power transmission and distribution subsystem, a power transformation and distribution subsystem, a driving subsystem, an energy storage subsystem and an energy management subsystem; a power generation system and a driving system which are mutually independent in traditional electric fracturing are combined into a whole, and is unified as direct-current voltage in the form of electric energy; the direct current is transmitted to the driving end of each electric device through a bus; a driving device supplies power to the device through an inverter or a switch; and therefore, comprehensive utilization of energy of a whole well site is achieved.

The invention provides a lithium sulfur battery positive electrode material. The positive electrode material comprises a sulfur/graphene oxide/CNTs compound, the sulfur/graphene oxide/CNTs compound is coated with a conductive polymer layer, and the conductive polymer layer is coated with a binder layer. A large amount of functional groups on the surface of graphene oxide have a very good fixing effect on in situ generated sulfur simple substance, so the cycle stability of a battery is obviously improved; CNTs are compounded with graphene oxide, so the power density, the charge and discharge speed and the stability of the battery are increased; and the conductive polymer layer can improve the conductivity of the positive electrode material, and also can prevent degradation of an electrolyte and generation of other side reactions. The lithium sulfur battery positive electrode material has large electrode capacity and excellent cycle performances.

The invention discloses an EMI filter of a folding chained form feedthru capacitor structure. The EMI filter comprises a laminated substrate, an input terminal, an output terminal and two ground terminals; the laminated substrate comprises a substrate, conductive polar plates, a ground polar plate and a metal through hole, which are laminated from bottom to top in sequence; the conductive polar plate is arranged on the surface of the substrate; one end of the conductive polar plate at the first layer is connected with the input terminal, one end of the conductive polar plate on the last layer is connected with the output terminal, and the ground polar plate is arranged on the surface of the rest substrate; both ends of the ground polar plate are connected with the two ground terminals; the metal through hole is along the lamination direction of the substrate, and the conductive polar plates are connected at heads and tails through the metal through hole, so that the conductive polar plates and the ground polar plate from a spatial folding chained form feedthru capacitor structure. The chained form structure of the EMI filter provided by the invention folds and cascades a plurality of feedthru capacitors to make full use of the parasitic effect in the structure in a limited volume to achieve excellent out-of-band rejection.

The invention provides a low-voltage differential signal driver. The low-voltage differential signal driver comprises a main driving circuit and a common-mode feedback network. The main driving circuit is used for generating high-speed differential transmission data with low voltage swing. The common-mode feedback network is connected with the main driving circuit and used for comparing common-mode voltage at the output end of the main driving circuit with target common-mode voltage so as to adjust the common-mode voltage to the level of the target common-mode voltage. The low-voltage differential signal driver greatly improves the stability of the driving circuit and increases the working speed of the driving circuit.

The invention belongs to the preparation technical field of capacitors and discloses a preparation method of a carbon nano-tube super capacitor. The carbon nano-tube super capacitor is of a one-dimensional linear structure and is composed of metal wires, carbon nanotube yarns and conductive polyaniline. The preparation method comprises the steps of 1, twisting metal wires together with carbon nanotube yarns to form M-CNT yarns of a covering yarn structure, wherein double strands of yarns or metal wires are adopted as a core and the surface of the core is coated with carbon nanotube yarns; 2, putting M/CNT yarns or M-CNT yarns into a mixed solution of aniline, ammonium persulfate, perchloric acid, deionized water and ethanol, subjecting the mixture to reaction for 12-48 hours at a temperature of -20 to 5 DEG C to realize the in-situ growth of polyaniline on the surfaces of M/CNT yarns or M-CNT yarns, and finally obtaining composite yarns M/CNT/PANI or M-CNT-PANI; 3, soaking two M/CNT/PANI or M-CNT-PANI yarns in a polyving akohol-phosphoric acid sol, forming a film layer on the surfaces of the yarns, and intertwining the two composite yarns together to obtain a super capacitor. According to the technical scheme of the invention, the capacitance of the super capacitor prepared by the above method is enabled to be larger than 100 F/g. Meanwhile, the super capacitor is short in charging/discharging duration, high in energy density and simple in process, thus being applicable to textile wearable power supplies.

The invention discloses a hybrid power driving system comprising a generator (1) and a supercapacitor (3). A fuel gas engine serves as a power source of the generator. The generator is connected with the input end of a motor controller (5) through a rectification unit (2). The output end of the motor controller is connected with a traction motor (6). The supercapacitor is in parallel connection between the rectification unit and the motor controller through a bi-directional DC/DC convertor (4). A brake resistance unit (7) is further in parallel connection between the rectification unit and the motor controller. According to the system, fuel gas and capacitance hybrid power driving can be achieved simply and economically to obtain the optimal economic benefit. The invention further discloses a vehicle using the hybrid power driving system and a working process of the supercapacitor in the system.

The invention provides a preparation method of a conductive carbon material with a hierarchical porous structure. The method comprises: dissolving phenolic resin into an ethanol solution; dissolving a surface active agent F127 into an HCl-containing ethanol solution; then adding ethyl orthosilicate, silicon dioxide colloidal particles and the phenolic resin ethanol solution; transferring a mixture into a container, volatilizing ethanol, performing thermal polymerization in a reaction furnace of 100 DEG C to obtain a faint-yellow transparent thin film, and grinding the thin film into powder; putting the powder into a tubular muffle furnace, and performing carbonization under the nitrogen atmosphere protection; soaking a hierarchical porous structure carbon/silicon oxide composite material into HF of which the content is 5wt%, removing silicon oxide, only retaining carbon components of the hierarchical porous structure, washing a sample by using deionized water, and then performing drying to obtain the conductive carbon material with the hierarchical porous structure. According to the preparation method of the conductive carbon material with the hierarchical porous structure, the internal resistance of a lead acid battery electrode can be effectively reduced, and the utilization rate of active substances and the charge-discharge rate are improved; meanwhile, the electrode structure can be stabilized, and the recycling life is prolonged.