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56results about How to "Stable charging and discharging" patented technology
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Battery control system and battery pack
ActiveUS20150035495A1Reduce differenceUnnecessary balance controlCharge equalisation circuitCircuit monitoring/indicationCharge and dischargeTemperature measurement
A battery control unit (400) controls charge and discharge of battery cells (100) on the basis of temperatures measured by a temperature measurement unit (320) and voltages measured by the voltage and current measurement unit (340). In addition, the battery control unit (400) specifies a lowest temperature cell having the lowest temperature and a highest temperature cell having the highest temperature on the basis of the temperatures measured by the temperature measurement unit (320), when a current is greater than 0. In addition, the battery control unit (400) performs balance control for equalizing voltages of all the battery cells (100), on the basis of the voltages measured by the voltage and current measurement unit (340), when a first temperature condition in which a temperature difference ΔT between the highest temperature cell and the lowest temperature cell is equal to or greater than a reference value T1 is not satisfied. On the other hand, when the temperature difference ΔT satisfies the first temperature condition, the battery control unit (400) does not perform the balance control.
Owner:NEC ENERGY DEVICES LTD
Formation method of soft package lithium ion battery
ActiveCN108598581AClosely spaced and consistentGuaranteed shuttle distanceFinal product manufactureElectrolyte accumulators manufactureElectrical batteryHigh energy
The invention provides a formation method of a soft package lithium ion battery, and belongs to the technical field of lithium ion battery manufacturing. By the formation method, the problems that howgas in the soft package lithium ion battery is effectively discharged and the formation of a more compact and stable SEI film is facilitated are solved. The formation method of the soft package lithium ion battery comprises the steps of performing pre-charging formation, secondary vacuumizing and small-current charging formation on the lithium ion battery, before pre-charging formation, performing primary vacuumizing on the lithium ion battery subjected to liquid injection and being immersed at a normal temperature to preset vacuum, performing vacuum thermal package, performing primary front-surface and back-surface rolling on the lithium ion battery after vacuum hot sealing by a rolling device, performing high-temperature immersion, reducing a temperature to a room temperature, and performing secondary front-surface and back-surface rolling on the lithium ion battery after vacuum hot sealing by a rolling device between secondary vacuumizing and small-current formation. By the method,the more compact and stable SEI film is formed on a surface of a lithium ion battery negative electrode in a high-energy consumption mode in a more stable and safer environment, so that the performance of all aspects of the lithium ion battery is improved.
Owner:ZHEJIANG FOREVER NEW ENERGY TECH CO LTD +1
Preparation method of different morphologies of cobalt monoxide nanometers loaded with foam nickel
ActiveCN108390014AReduce usageQuality improvementMaterial nanotechnologyNegative electrodesThermal insulationSolvent
The invention discloses a preparation method of different morphologies of cobalt monoxide nanometers loaded with foam nickel. The preparation method comprises: placing sheet-like foam nickel in an ultrasonic washing machine, washing, placing the washed foam nickel in a drying box, and drying; dispersing cobalt chloride hexahydrate powder into a dispersion solvent added with urea, and magneticallystirring at a room temperature to form a suspension; transferring the suspension to a high-pressure hydrothermal reaction kettle, obliquely placing the dried sheet-like foam nickel into the high-pressure hydrothermal reaction kettle, sealing the high-pressure hydrothermal reaction kettle, placing the high-pressure hydrothermal reaction kettle into the drying box, carrying out thermal insulation for 15-18 h at a temperature of 160-200 DEG C, and naturally cooling to a room temperature; taking the foam nickel out of the high-pressure hydrothermal reaction kettle, placing into the ultrasonic washing machine, washing, placing into a vacuum drying box, and drying to obtain a precursor; and calcining the precursor for 3-4 h at a calcination temperature of 400-520 DEG C.
Owner:SOUTH CHINA NORMAL UNIVERSITY
Composite lithium metal negative pole and preparation method thereof
InactiveCN110660968AUniform depositionPreserved tubular structureNegative electrodesLi-accumulatorsMetallic lithiumLithium metal
The invention belongs to the field of lithium batteries and relates to a composite lithium metal negative pole and a preparation method thereof. According to the preparation method, metal lithium is heated to a molten state in an argon-shielded glove box; a three-dimensional carbon sheet is made to contact with the molten lithium; after the three-dimensional carbon sheet is completely impregnatedby the metal lithium, the three-dimensional carbon sheet is taken out and is cooled to room temperature, so that the composite lithium metal negative pole is obtained. According to a three-dimensionalcarbon current collector, natural biomass catkin is used as a raw material; the natural biomass catkin is subjected to suction filtration and carbonization treatment, so that the three-dimensional carbon sheet is obtained; the carbonized catkin contains a large number of heteroatoms (mainly N and O), meanwhile, a hollow tubular structure is reserved; and the molten metal lithium can be easily injected into the whole three-dimensional network through capillarity; and the formed three-dimensional conductive carbon frame and rich space not only induce the uniform deposition of lithium, but alsocan adapt to volume change, so that the stable lithium metal negative pole can be obtained.
Owner:TIANJIN UNIV
Battery control system and battery pack
ActiveUS9525289B2Unnecessary balance controlStable charging and dischargingCharge equalisation circuitCircuit monitoring/indicationControl systemTemperature difference
A battery control unit (400) controls charge and discharge of battery cells (100) on the basis of temperatures measured by a temperature measurement unit (320) and voltages measured by the voltage and current measurement unit (340). In addition, the battery control unit (400) specifies a lowest temperature cell having the lowest temperature and a highest temperature cell having the highest temperature on the basis of the temperatures measured by the temperature measurement unit (320), when a current is greater than 0. In addition, the battery control unit (400) performs balance control for equalizing voltages of all the battery cells (100), on the basis of the voltages measured by the voltage and current measurement unit (340), when a first temperature condition in which a temperature difference ΔT between the highest temperature cell and the lowest temperature cell is equal to or greater than a reference value T1 is not satisfied. On the other hand, when the temperature difference ΔT satisfies the first temperature condition, the battery control unit (400) does not perform the balance control.
Owner:ENVISION AESC ENERGY DEVICES LTD
Carbon self-coated micron-sized tungsten oxide, negative electrode material, battery and preparation method
ActiveCN110783561AImprove conductivityReduce volumeTungsten oxides/hydroxidesCell electrodesElectrical batteryNanoparticle
The embodiment of the invention discloses carbon self-coated micron-sized tungsten oxide, a negative electrode material, a battery and a preparation method. The method comprises the following steps of: preparing a precursor of the carbon self-coated micron-sized tungsten oxide by adopting a water bath stirring method, and calcining the precursor of the carbon self-coated micron-sized tungsten oxide in an inert atmosphere to obtain the carbon self-coated micron-sized tungsten oxide. The carbon self-coated micron-sized tungsten oxide composite material synthesized by adopting the method providedby the embodiment of the invention is of a pomegranate-like structure, and tungsten oxide nanoparticles are uniformly distributed in a carbon matrix. The carbon matrix can improve the conductivity ofthe carbon self-coated micron-sized tungsten oxide composite material, a rapid and shortened transmission channel for potassium ions is provided, and higher rate capability is provided for a battery.Besides, due to the confinement effect of carbon, the volume expansion and the structural damage of tungsten oxide after potassium ion intercalation can be effectively reduced for the tungsten oxidenanoparticles uniformly coated by carbon, and better cycle performance is provided for the battery.
Owner:QINGDAO UNIV
Metal-oxygen battery
InactiveUS20130164638A1Stable charging and dischargingAvoid enteringFuel and primary cellsFuel and secondary cellsIon transferEngineering
Aims at providing a metal oxygen battery capable of supplying oxygen and perform charge / discharge stably. A metal oxygen battery 1 includes a positive electrode 2 to which oxygen is applied as an active substance, a negative electrode 3 to which a metal is applied as an active substance, an electrolyte layer 4 disposed between the positive electrode 2 and the negative electrode 3, and a case 5 hermetically housing the positive electrode 2, the negative electrode 3, and the electrolyte layer 4. The positive electrode 2 includes an oxygen-storing material having a catalyst function with respect to a cell reaction, and a function of, during discharge, ionizing oxygen and binding the oxygen with metal ions transferring from the negative electrode 3 through the electrolyte layer 4 to the positive electrode 2 to thereby form a metal oxide, and during charge, reducing the metal oxide and storing oxygen.
Owner:HONDA MOTOR CO LTD
Bidirectional vehicle charging and discharging system and method thereof
InactiveCN108173323AImprove efficiencyStable charging and dischargingAc-dc conversion without reversalCharging stationsPower flowElectric power conversion
The invention discloses a bidirectional vehicle charging and discharging system and is applied to a vehicle cell. The system comprises an AC / DC conversion module used for carrying out AC-DC electric power conversion, and a DC / DC conversion module which is coupled with the AC / DC conversion module and is used for stabilizing an output voltage and an output current and charging the vehicle cell, wherein the AC / DC conversion module and the DC / DC conversion module comprise at least one bidirectional conversion circuit and are used for discharging the vehicle cell.
Owner:PHIHONG TECH CO LTD
Molten salt battery and method for producing same
InactiveCN103384937AStable charging and dischargingFinal product manufactureSmall-sized cells cases/jacketsElastomerElectrical battery
In order to provide a molten salt battery that can be charged and discharged stably without requiring, as an essential element, an internal elastic component for achieving contact by pressurization, this molten salt battery is provided with: a molten salt battery body in which positive electrodes and negative electrodes are stacked alternately with separators sandwiched therebetween, the separators containing a molten salt as an electrolyte; and a battery case that is made of a flexible material and that seals and covers the molten salt battery body while exposing only the terminals from the positive electrodes and the negative electrodes. The inside of the battery case is brought into a negative pressure state, and thus, the battery case presses the molten salt battery body in the stacking direction due to the external pressure caused by atmospheric pressure.
Owner:SUMITOMO ELECTRIC IND LTD
Battery
ActiveCN111952514AEasy to assembleImprove sealingFinal product manufactureCylindrical casing cells/batteryThermodynamicsElectrical battery
According to the battery disclosed by the invention, the shoulder A and the shoulder B which are bent outwards are arranged in the middle of the base shell, so that when the battery is heated and gasin the battery expands, the gas can expand towards two ends of a cavity, a pressure relief effect can be achieved, and the phenomenon of telescopic expansion towards two electrodes can be avoided; meanwhile, the heat dissipation area of the shell can be increased, and the heat dissipation capacity is improved; the sealing performance of the battery can be improved by the sealing and flanging process, the strength of the first pole shell and the second pole shell can be improved, and the overall structural strength of the battery is improved; a first pole piece and a second pole piece are woundinto a whole, the upper end face of the first pole piece is electrically connected with a first pole shell, and the lower end face of the second pole piece is electrically connected with a second pole shell; by the adoption of the connecting mode, welding is not needed, the process can be simplified, cost is reduced, and automatic production can be better achieved. Meanwhile, the end surface contact design is adopted, rapid and stable charging and discharging can be achieved, and the cycle life of the battery is prolonged.
Owner:SHENZHEN EASY POWER STORE TECH CO LTD
Phase-change material compounded with strip VO2 nanoflower structure on silicon substrate and preparation method thereof
InactiveCN101891250AImprove charge and discharge performanceStable charging and dischargingVanadium oxidesAmmonium metavanadateCathode
The invention discloses a phase-change material compounded with a strip VO2 nanoflower structure on a silicon substrate and a preparation method thereof. The material comprises the silicon substrate and a VO2 crystal which grows on the silicon substrate; and the VO2 crystal grows in a direction vertical to the silicon substrate, has a strip nanoflower structure, and is directionally generated by nanobelts. The preparation method comprises the following steps of: adding ammonium metavanadate into the aqueous solution of oxalic acid, impregnating a silicon wafer in the aqueous solution, reacting at the temperature of between 150 and 180 DEG C under the sealed condition for 24 to 36 hours, and naturally cooling to the temperature of between 18 and 25 DEG C to prepare the phase-change material. The material serving as the cathode material of a Li cell has the advantages of high charging and discharging performance and cyclic voltammetry performance, stable material charging and discharging, and reusability. The phase-change material compounded with the strip VO2 nanoflower structure on the silicon substrate and the preparation method have the advantages of low cost, simple growth condition, high repeatability, safety and the like, and are suitable for large-scale industrialized production.
Owner:EAST CHINA NORMAL UNIV
Binary transition metal oxide and graphene oxide composite material, preparation method thereof and sodium ion battery
InactiveCN110504429AFacilitated DiffusionTightly boundMaterial nanotechnologySecondary cellsElectrical batteryOxide composite
The invention relates to the technical field of battery materials, in particular to a binary transition metal oxide and graphene oxide composite material, a preparation method thereof and a sodium ionbattery. According to the preparation method of the binary transition metal oxide and graphene oxide composite material, Prussian blue analogue is grown in situ on the surface of the graphene oxide after a hydrothermal reaction, so that the Prussian blue analogue is more tightly combined with the graphene oxide, and then the battery is more stable in the charging and discharging process, so thatthe electrochemical performance of the graphene oxide composite material is improved. After the graphene oxide is subjected to the hydrothermal reaction, three-dimensional graphene oxide is obtained,so that the specific surface area of the composite material is increased, and therefore the volume expansion of the binary transition metal oxide is effectively relieved, meanwhile, agglomeration of the binary transition metal oxide is effectively prevented, and the electrical conductivity and the cycling performance of the composite material are improved.
Owner:GUANGDONG UNIV OF TECH
Positive electrode active material for nonaqueous electrolyte secondary batteries, method for producing same, and nonaqueous electrolyte secondary battery using same
ActiveCN108886144ALess deterioration due to repeated charging and dischargingStable charging and dischargingPositive electrodesLi-accumulatorsLithiumPhysical chemistry
The present invention provides a positive electrode active material which is suppressed in deterioration caused by repeated charging and discharging and enables stable charging and discharging, thereby enabling the achievement of higher output and longer service life of a nonaqueous electrolyte secondary battery. A positive electrode active material, which is composed of a layered lithium transition metal oxide represented by general formula Lia(NibCocAldMee)O2 (wherein Me=Mn, Mg, Ti, Ru, Zr, Nb, Mo or W; 1.00<=a<=1.15; 0.25<b<1; 0<c<=0.30; 0<=d<=0.05; and 0<=e<=0.40), is configured of secondary particles, each of which is composed of aggregated primary particles. With respect to the Li composition ratio of unreacted Li and Li produced by a decomposition reaction in the secondary particles, the variation coefficient of the Li composition ratio represented by Li / M (M = Ni+Co+Al+Me) is 30% or less.
Owner:BASF TODA BATTERY MATERIALS LLC
Preparation method of lithium ion battery positive electrode material
ActiveCN104009214AImproved high-magnification performanceImprove cycle performanceCell electrodesSecondary cellsSupercritical dryingElectrical battery
The invention relates to a preparation method of a lithium ion battery positive electrode material. The preparation method comprises the following steps: 1, dispersing vanadium oxide and graphene oxide in water and / or an organic solvent, sealing the obtained solution in a hydrothermal kettle, and carrying out a hydrothermal reaction and / or a solvothermal reaction at 100-130DEG C, wherein a feeding mass ratio of the vanadium oxide to the graphene oxide is 0.8-10:1; and 2, drying the product system obtained in step 1 by adopting anyone drying method of vacuum drying, freeze drying and supercritical drying to obtain a solid product which is the positive electrode material. The method is characterized in that a reducing agent is selectively added to the system obtained in the step 1 after the step 1 and before step 2 in order to carry out a reducing reaction. The positive electrode material obtained in the invention has the advantages of high conductivity, low dimensions, super excellent high-magnification performances, good cycle stability, high repeatability, simple process, short time and environmental protection.
Owner:YADEA TECH GRP CO LTD
High-temperature-resistant and high-voltage-resistant composite lithium cobalt oxide positive electrode material as well as preparation method and application thereof
PendingCN114141999AImprove lattice stabilityFirmly connectedSecondary cellsPositive electrodesPhysical chemistrySalt solution
The invention relates to a high-temperature-resistant and high-voltage-resistant composite lithium cobalt oxide positive electrode material which is of a multi-layer structure and sequentially comprises a metal element doped particle inner core, an interface transition layer and an amorphous phosphate coating layer from inside to outside. The preparation method comprises the following steps: carrying out a co-precipitation reaction on a Co aqueous solution, an Ma aqueous solution and a carbonate solution to obtain Ma element doped cobalt carbonate; carrying out ball milling on the Ma element doped cobalt carbonate and an Ma compound, and calcining to obtain an Ma element doped cobaltosic oxide precursor; mixing the Ma element doped cobaltosic oxide precursor with a lithium source, and calcining to obtain an Ma element doped lithium cobalt oxide material; and carrying out ball milling on the Ma element doped lithium cobalt oxide material, phosphate and absolute ethyl alcohol, and calcining to obtain the high-temperature-resistant and high-voltage lithium cobalt oxide positive electrode material. The interface transition layer can enhance the connection between the coating layer and the inner core and improve the lattice stability of the interface.
Owner:HUAZHONG UNIV OF SCI & TECH
Solar-assisted rechargeable zinc-air battery with low charging potential
ActiveCN110729528AReduce overpotentialImprove energy efficiencyFuel and secondary cellsCell electrodesSemiconductor materialsBismuth vanadate
The invention discloses a solar-assisted rechargeable zinc-air battery with a low charging potential. The air cathode of the zinc-air battery is an iron oxide photoelectrode with a porous FTO substrate or a bismuth vanadate photoelectrode with a porous FTO substrate. According to the battery of the invention, the semiconductor material is used as the air cathode and the photoelectrode at the sametime, so that the charging voltage of the zinc-air battery is reduced by utilizing solar energy; and the utilization of the solar energy is realized under medium- and small-current charging and discharging, so that a low charging voltage is obtained, and therefore, the energy efficiency of the zinc-air battery is improved.
Owner:重庆新申世纪新材料科技有限公司
High-voltage charge pump circuit
InactiveCN107528468ACompact structureStable charging and dischargingApparatus without intermediate ac conversionCapacitanceDriver circuit
The invention relates to a high-voltage charge pump circuit and belongs to the motor field. The high-voltage charge pump circuit is composed of a two-phase voltage multiplier circuit, an output voltage difference detection circuit, a pump capacitor left pole plate voltage difference detection circuit and a driver circuit. According to the novel charge pump circuit, a novel power MOSFET is adopted as a switching tube; the input and output voltage of the circuit ranges from 13 V to 45V; drivers complete the control of the shift function of brainwashing and the control of the switching on and switching off of the switching tube; and the high-voltage difference detection circuit is designed in the circuit to detect the difference values of pump capacitor left pole plate voltage, output voltage and power source voltage, adopts detection results as the input signals of a linear modulation circuit so as to generate feedback signals. The high-voltage charge pump circuit has the advantages of compact circuit structure, stable charge-discharge process, linear change of output voltage with input voltage, stable voltage and low ripples.
Owner:许亚夫
Flexible battery electrode and manufacturing process thereof
ActiveCN112563443AMake experimentImprove electrochemical performanceElectrode manufacturing processesMicroscopic fiber electrodesSolid state electrolyteElectrical battery
The invention belongs to the field of flexible batteries, and relates to a flexible battery electrode and a manufacturing process thereof. The surface of a first electrode of the electrode is providedwith an irregular convex structure, and the surface of a second electrode is provided with a layer of solid electrolyte; the convex structure on the first electrode and the solid electrolyte on the second electrode are embedded with each other and are fastened and combined with each other. According to the method, the two poles of the fibrous flexible battery can be tightly connected, it is ensured that the two poles of the fibrous flexible battery are tightly bonded all the time in the bending process of the flexible device, and the flexible battery prepared through the method has more excellent flexibility and electrochemical performance.
Owner:YANGZHOU UNIV
Electrochemical device and method for manufacturing same
ActiveCN108292568AImprove reliabilityStable charging and dischargingHybrid capacitor electrolytesHybrid capacitor electrodesElectrolytic agentConductive polymer
The electrochemical device according to the present invention is characterized by comprising: a positive electrode having a positive electrode material layer containing a conductive polymer doped witha first anion and a second anion; a negative electrode having a negative electrode material layer that occludes and releases lithium ions; and a nonaqueous electrolytic solution having lithium ion conductivity, wherein the second anion is more easily expelled from the conductive polymer than the first anion, respective mole numbers M1 and M2 of the first and second anions with which the conductive polymer is doped at a charge end stage satisfy a relationship of M1<M2, and respective mole numbers M3 and M4 of the third and fourth anions with which the conductive polymer is doped at a dischargeend stage satisfy a relationship of M3>M4.
Owner:PANASONIC INTELLECTUAL PROPERTY MANAGEMENT CO LTD
Defibrillation energy storage capacitor and charging circuit
InactiveCN112510805ALittle change in characteristicsImprove charge and discharge efficiencyBatteries circuit arrangementsHeart defibrillatorsCapacitanceCharge and discharge
The invention relates to a defibrillation energy storage capacitor and a charging circuit. A storage battery is sequentially connected with the charging circuit and a low-voltage energy storage capacitor. A first interface of a PWM chip IC1 of the charging circuit, a resistor R2 and a fourteenth interface of the IC1 are connected in series. A first interface of the IC1, the capacitor C1, the resistor R1 and a twelfth interface of the IC1 are connected in series; one path between the C1 and the R1 is connected with a 13th interface of the IC1; one path is connected with a capacitor C2 and thenconnected with a tenth interface of the IC1, and the other path is grounded; one path of a ninth interface of the IC1 is connected with a sixth interface of the IC1, one path is grounded after being connected with a capacitor C3, and one path is connected with a third interface of the dual operational amplifier IC2; an eighth interface of the IC1 is connected with a first interface of the IC2, a fourth interface of the IC2 is grounded, the eighth interface of the IC2 is connected with 12V, the fourth interface of the IC2 is respectively connected with the resistor R4 and the resistor R5, and afifth interface of the IC1 is connected with a seventh interface of the IC1 in series. Safety is guaranteed, waiting is not needed, stable and repeated charging and discharging can be achieved, the economic effect is good, and power consumption is reduced.
Owner:SHANGHAI UNIV OF MEDICINE & HEALTH SCI
Anion doped high voltage charge and discharge lithium vanadium phosphate cathode material and preparation method thereof
InactiveCN108598473AReduce conductivityHigh charge and discharge capacityCell electrodesSecondary cellsWater bathsDistillation
The invention provides an anion doped high voltage charge and discharge lithium vanadium phosphate cathode material and a preparation method thereof. The preparation method comprises the following steps: putting raw materials into a reaction vessel, adding water and stirring until all the raw materials are fully dissolved, and regulating pH value of the solution with ammonia water; heating in water bath directly, drying excessive moisture by distillation and forming a sol-like substance, and drying; then putting into a tube furnace, pre-sintering for 1-4 hours, and removing impurities; and grinding and tabletting the product, and then calcining for 4-12 hours, and naturally cooling to room temperature, thus the cathode material is obtained. The preparation method is succinct in steps and easy to operate, experimental conditions are simple and controllable, requirements on experimental apparatus are low, and the obtained bromine-doped lithium vanadium phosphate cathode material has better multiplying power and cycle performance during high voltage charge and discharge and has a broader application prospect in the aspect of power batteries.
Owner:UNIV OF ELECTRONICS SCI & TECH OF CHINA
Vehicle-mounted GPS system adopting thermoelectric power generation plate used for power supply
PendingCN106837493AGuaranteed safe operationPrevent energy waste and environmental pollutionInternal combustion piston enginesExhaust apparatusAutomotive engineeringElectricity
The invention relates to the field of automobile parts and particularly relates to a vehicle-mounted GPS system. The vehicle-mounted GPS system comprises a GPS positioning module, at least one thermoelectric power generation plate used for power generation, an energy storing device used for storing power, a power supply device used for supplying power for the GPS positioning module, a clamping device used for clamping and a mounting base used for mounting the thermoelectric power generation plate, wherein both the energy storing device and the power supply device are mounted on the mounting base, and the power supply device is electrically connected with the energy storing device and the GPS positioning module; and the mounting base is annularly arranged at the outer side of a clamping plate, and the thermoelectric power generation plate is mounted between the mounting base and the clamping plate. The vehicle-mounted GPS system does not need to be connected into an automobile circuit, so that the damage of the automobile circuit due to too large load is prevented, the safe running of an automobile is ensured, and energy saving and environmental protection are facilitated.
Owner:东莞市美谷电子科技有限公司
Novel aqueous copper-bromine secondary battery
InactiveCN110828813ALow costExcellent refillabilityCell electrodesFinal product manufactureElectrolytic agentCu2 ions
The present invention relates to a novel aqueous copper-bromine secondary battery, and the battery comprises a positive electrode, a negative electrode and an electrolyte; the positive electrode is anelectrode material capable of achieving a Br- / Br2 oxidation reduction reaction, the negative electrode is metal copper, a copper alloy or a modifier thereof, and the electrolyte contains Cu2+ and Br- / Br2. According to the novel aqueous copper-bromine secondary battery disclosed by the invention, the positive electrode adopts the electrode material with better electrochemical activity, and a soluble redox couple Br- / Br2 is used for reaction on a positive electrode / electrolyte interface; and the negative electrode completes the reversible deposition and oxidation reaction of copper ions on metal copper or a negative electrode substrate thereof. The copper-bromine secondary battery disclosed by the invention is low in cost and has excellent chargeability, cycle life and high-current discharge performance; the stable charging and discharging can be carried out, the capacity can be 190-630 mAhg<-1>, and the capacity retention ratio is 89-93% after 5000 cycles; the energy density of the copper-bromine secondary battery can be 210-690 Whkg<-1>, and the power density of the copper-bromine secondary battery can be 1.78-2.1 kWkg<-1>.
Owner:CHINA TRIUMPH INT ENG
Shell structure for liquid metal battery and preparation method thereof
ActiveCN106252747ASimple manufacturing processImprove high temperature resistanceSecondary cellsElectrical batteryChemical compatibility
The invention discloses a shell structure for a liquid metal battery and a preparation method thereof. The shell structure comprises a ceramic tube, a metal base used as a positive pole and a metal top cover used as a negative pole, wherein two ends of the ceramic tube are respectively connected with the metal base and the metal top cover to form a sealed battery housing structure. The technical problems of sealing f a liquid metal battery housing, insulation between the positive pole and the negative pole, chemical compatibility between the housing and the active material of the housing and physical and chemical stability within battery storage and operating temperature range are solved.
Owner:XIAN HIGH VOLTAGE APP RES INST CO LTD
Vehicular GPS (global positioning system) with power supplied by vibration power generation assemblies
PendingCN106696841AGuaranteed to workGuaranteed safe operationElectric/fluid circuitElectricityComputer module
Owner:东莞市美谷电子科技有限公司
Wireless charging and discharging system and method for electric automobile
PendingCN112248829ACharge and discharge safetyStable charging and dischargingCharging stationsTransmission systemsElectric carsInductive charging
The invention discloses a wireless charging and discharging system and method for an electric automobile. The system comprises a charging vehicle for providing electric energy and a power receiving vehicle for receiving the electric energy, wherein the charging vehicle and the power receiving vehicle are respectively provided with a wireless communication module and a wireless charging / dischargingmodule; the system further comprises a cloud server. The cloud server sends corresponding wireless charging / discharging instruction information to the charging vehicle and the power receiving vehicleaccording to the current vehicle condition information of the charging vehicle and the power receiving vehicle; and the charging vehicle and the power receiving vehicle respectively perform wirelessdischarging and wireless charging according to the corresponding wireless charging / discharging instruction information. According to the wireless charging and discharging system and method for the electric automobile, it can be guaranteed that the electric automobile can be safely and stably charged in the advancing process under the condition that a power source is lacked, power source supply isfacilitated, traffic jam is reduced, and great comfort and convenience are brought to traveling.
Owner:IAT AUTOMOBILE TECH
Electrolyte regulation method and system and flow battery energy storage system
InactiveCN110611109AStable charging and dischargingReactant parameters controlElectrolyte stream managementState of chargeEngineering
The invention discloses an electrolyte regulation method and system and a flow battery energy storage system. The electrolyte regulation method is suitable for a flow battery energy storage device. The flow battery energy storage device comprises an electrolyte storage tank and a battery stack device. The battery stack device is formed by connecting a plurality of liquid path pipelines in parallel, and each liquid path pipeline communicates the electrolyte of a plurality of battery stacks in series. The method comprises the following steps: determining the state-of-charge value of the electrolyte in the battery stack device; if the state-of-charge value of the electrolyte in the battery stack device is within a first preset range, determining a target electrolyte flow conveyed to the battery stack device by the electrolyte storage tank; and regulating the flow battery energy storage device to a target state according to the target electrolyte flow. According to the application, the problem that the flow of the battery stack liquid paths cannot be controlled and the stable charging and discharging of the system cannot be realized for an energy storage device in which a plurality ofbattery stack liquid paths are connected in series on liquid flow pipelines connected in parallel in the related technology is solved.
Owner:中国东方电气集团有限公司
Positive plate of LiNixCoyMn(1-x-y)O2 acid-free lead-lithium secondary battery and preparation method thereof
InactiveCN104716298AExtended service lifeReduce usageElectrode carriers/collectorsSecondary cellsElectrolytic agentElectrical battery
The invention discloses a positive plate of an LiNixCoyMn(1-x-y)O2 acid-free lead-lithium secondary battery and a preparation method thereof. The positive plate is prepared through the following steps: adopting an aluminum sheet or a copper sheet as a current collector; adopting LiNixCoyMn(1-x-y)O2 as the active material of the battery positive pole, wherein x is greater than or equal to 0 and less than or equal to 1, y is greater than or equal to 0 and less than or equal to 1, and x plus y is less than or equal to 1; adopting PTFE as a binding agent; adopting acetylene black as a conductive agent to prepare the positive plate equipped with an ordinary lead-acid battery negative plate; adopting glass fiber as a partition, and adopting a neutral Li2SO4 as an electrolyte solution to assemble the acid-free lead-lithium secondary battery. Compared with the lead-acid battery, the use amount of lead is reduced by 75%, the aqueous electrolyte solution is more environment-friendly, safer and cheaper, can more remarkably improve the charge-discharge performance of the battery, and prolongs the service life of the battery.
Owner:TIANNENG GRP JIANGSU TECH
Electric vehicle charging and heating control method and device, storage medium and electric vehicle
InactiveCN112428876AStable charging and dischargingBalanced distribution of powerCharging stationsElectric vehicle charging technologyPower batteryEngineering
The invention discloses an electric vehicle charging and heating control method and device, a storage medium and an electric vehicle, and the method comprises the steps: obtaining the allowable charging and discharging power of a power battery and the target heating power of a heating device in electric equipment when the heating and charging of the power battery is determined; gradually loading the allowable heating power of the heating device according to a preset step length until the allowable heating power reaches the target heating power, obtaining the actual heating power of the heatingdevice after each time of power loading and stable heating of the heating device, and obtaining the actual consumed power of the electric equipment according to the actual heating power of the heating device, and controlling the output power of the charging device according to the actual consumption power of the electric equipment and the allowable charging and discharging power of the power battery. Therefore, according to the control method, the power of the electric vehicle for heating and charging and discharging can be distributed in a balanced mode, the electric vehicle can be charged and discharged stably, and meanwhile the charging and discharging cost and difficulty of the electric vehicle are reduced.
Owner:宝能(广州)汽车研究院有限公司
Power safety inspection system based on wearable device
InactiveCN110349287AGuarantee personal safetyReduce labor intensityChecking time patrolsParticular environment based servicesElectricityLight equipment
The invention discloses a power safety inspection system based on a wearable device. The system comprises a safety helmet, a flashlight and a remote monitoring terminal. The safety helmet includes a helmet body; and a control chamber is arranged at the rear end of the helmet body. A main control module, a positioning module, a human body monitoring module, an alarm module, and a wireless communication module are arranged in the control chamber; the positioning module, the human body monitoring module, the alarm module and the wireless communication module are connected with the main control unit respectively electrically; and the wireless communication module is in communication with the remote monitoring terminal. The safety helmet is used for storage and transmission of the inspection information of electric equipment to guarantee the personal safety of the inspection personnel. The flashlight is used for collecting equipment information and serves as inspection lighting equipment. The remote monitoring terminal is used for realizing centralized management of data, fault warning and centralized management of the operators. According to the inspection line equipment information, an inspection strategy is made, so that the labor intensity of the inspection personnel is reduced and the inspection efficiency is improved.
Owner:STATE GRID ZHEJIANG ELECTRIC POWER CO LTD JIAXING POWER SUPPLY CO
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