633results about How to "Reduce capacity" patented technology

The invention discloses a silicon-carbon composite material as well as a preparation method and application thereof, and relates to the technical field of battery negative electrode materials. The silicon-carbon composite material comprises active substance particles, and the active substance particles comprise a spherical porous carbon skeleton and nanometer silicon particles. The silicon-carbon composite material disclosed by the invention is high in sphericity degree, the poor pressure resistance caused by more edges and corners in the rolling process is avoided, and the problems that a solid electrolyte interface (SEI) film is continuously generated, the capacity is weakened and the circulation becomes poor due to low strength can be improved.

The invention relates to a lithium battery technology, in particular to a solid electrolyte, a lithium battery adopting the solid electrolyte and a preparation method of the lithium battery. The lithium battery comprises a positive plate containing a composite current collector, a negative plate, a diaphragm, a package and a solid electrolyte, the negative plate, the diaphragm and the positive plate are sequentially laminated in the packaging layer, and the solid electrolyte is filled among the negative plate, the diaphragm and the positive plate; the solid electrolyte and the composite current collector have an unexpected synergistic effect in the aspect of improving safety, in a needling experiment, when the solid electrolyte and the composite current collector are used at the same time, a relatively complete electronic insulating layer can be formed on the needling surface when the battery is penetrated by a needling needle, and occurrence of short circuit and thermal runaway is reduced; by using the composite current collector, the mass of the current collector in the battery is reduced, and the reduction of the battery capacity caused by high impedance of the solid electrolyte and the composite current collector is compensated, so that the sacrifice of the energy density of the battery is reduced.

The invention provides a positive active material and a preparation method thereof, a positive pole piece, a battery and electric equipment, the change rate d of the characteristic peak interplanar spacing of the positive active material (104) is greater than or equal to 0.05% and less than or equal to 0.5%, d = (d before-d after) / d before * 100%, d before is the interplanar spacing of the characteristic peak of the positive active material (104) measured by an X-ray diffractometer before circulation, and d after is greater than or equal to 0.05% and less than or equal to 100%. And d, measuring the interplanar spacing of the characteristic peak of the positive electrode active material (104) by an X-ray diffractometer at 45 DEG C after circulation for 80 weeks. Therefore, the interplanar spacing change rate of the positive electrode active material before and after circulation is small, which shows that the crystal structure stability of the positive electrode active material is good, the positive electrode active material is not easy to pulverize in the long-term circulation process of the battery, and the cycle performance of the battery can be improved.

The invention relates to the technical field of electrode materials, in particular to porous carbon, a silicon-carbon negative electrode material, an electrode plate, a lithium ion battery and an electric appliance. The porous carbon has micropores and mesopores, and the percentage of the pore volume of pores with the pore diameter smaller than 3 nm in the total pore volume is higher than 85%; the percentage of the pore volume of pores with the pore diameter less than 0.7 nm in the total pore volume is less than 15%; the pore size distribution of the porous carbon is in a Koelreuteria-type distribution, and the Koelreuteria-type distribution is that Dv / Dw of a pore size distribution curve is greater than 0.05 cm < 3 >. G <-1 >. Nm <-1 > in a pore size interval of 1-3nm. The porous carbon provided by the invention is micro-mesoporous porous carbon, is distributed in a koelreuteria shape, is low in pore resistance, can improve the silicon loading efficiency, ensures the adsorption capacity and also ensures the de-intercalation of lithium ions, and the silicon-carbon negative electrode material prepared from the porous carbon is high in capacity and efficiency and lower in expansion performance.

The invention relates to the technical field of photovoltaic energy storage methods, and discloses a method for optimizing hybrid photovoltaic energy storage based on a Perturbobserve algorithm, which comprises a load, a photovoltaic power generation subsystem, an energy storage subsystem, a control and management system and a grid-connected system. The specific control method comprises the following steps: S1, obtaining an illumination intensity value within one day through a meteorological station, and obtaining a power grid net load value within one day through a voltage sensor and a current sensor; s2, taking economy optimization as a target, considering photovoltaic energy storage capacity constraints, and establishing an energy storage SOC control strategy target function; and S3, solving is carried out by using a PerturBobserve algorithm, and an optimal control pulse sequence is obtained. By optimizing the charging and discharging time and intensity of the energy storage battery, the consumption rate of photovoltaic power generation is maximized, the light abandoning phenomenon is reduced, and the energy loss in the charging and discharging process is reduced. Meanwhile, the PertuBobserve algorithm can avoid the excessive charging and discharging of the energy storage battery while considering the system load, prolongs the service life of the battery, and solves the problem of insufficient management of the service life of the battery in a traditional method.

The invention discloses a particle swarm optimization-based flywheel-lithium battery hybrid energy storage system participation secondary frequency modulation capacity configuration method, which comprises the steps of establishing a regional power grid frequency modulation dynamic model based on ACE distribution and ARR distribution, and comprehensively considering an ACE signal distribution mode and an ARR signal distribution mode to determine a frequency modulation power instruction distributed by a hybrid energy storage system; a first-order low-pass filter is used for carrying out high and low frequency division on a frequency modulation power signal distributed by the hybrid energy storage system, a high-frequency component is distributed to flywheel energy storage for response, a low-frequency component is distributed to a lithium battery for response, and the high-frequency component and the low-frequency component serve as reference power of flywheel energy storage and lithium battery energy storage; the charging and discharging power of hybrid energy storage is adjusted and controlled by considering different energy storage SOC reconstruction domains; a hybrid energy storage capacity configuration model with the maximum hybrid energy storage participation frequency modulation income as the target is established based on the whole life cycle, and a particle swarm optimization algorithm is adopted for solving; the overall economical efficiency and safety of the hybrid energy storage system participating in frequency modulation are effectively improved.

The invention provides a power supply control device for collision unlocking of a traffic vehicle, and aims to improve the success rate of collision unlocking and reduce the capacity of a redundant power supply at the same time, the device comprises a main power supply, a standby power supply and a controller, the main power supply supplies power to a safety load and a non-safety load of the traffic vehicle, and the standby power supply supplies power to the controller. The standby power supply supplies power to the safety load when the main power supply breaks down, the controller controls the main power supply to stop supplying power to the non-safety load after receiving the collision signal, power supply to the safety load such as a door lock actuator is ensured, and therefore the door lock is driven to be unlocked. According to the device, the safety of a collision unlocking function is effectively improved, the capacity requirement of a standby power supply is reduced, and the problems of cost and arrangement are solved.

The invention belongs to the technical field of flow battery energy storage, and more specifically relates to a near-neutral total iron flow battery negative electrode electrolyte and a preparation method thereof, the negative electrode electrolyte is prepared from an iron salt, a chelating agent, a stabilizing agent, a supporting electrolyte and water at a certain temperature, the total iron concentration is 0.1-1.0 M, the molar ratio of the chelating agent to the iron salt is 1.2-2.0, the molar ratio of the stabilizing agent to the supporting electrolyte is 1.2-2.0, and the total iron concentration is 0.1-1.0 M. The molar ratio of the stabilizer to Fe is 0.25-1.0, the supporting electrolyte concentration is 0-2.0 mol / L, and the pH value is 7.0-8.5. The near-neutral negative electrode electrolyte for the total-iron flow battery is high in stability, can effectively inhibit generation of ferric hydroxide precipitates under a neutral condition, improves the stability of iron ions, greatly prolongs the cycle life of the total-iron flow battery, and can be widely applied to various aqueous flow batteries.

The invention discloses a sulfide solid electrolyte based on ionic liquid electrowetting modification and application thereof. The preparation method of the electrolyte comprises the following steps: preparing a sulfide electrolyte into an electrolyte sheet, and coating the surface of the electrolyte sheet with an ionic liquid to form an ionic liquid film, thereby obtaining the electrolyte sheet containing the ionic liquid film; and placing the sulfide solid electrolyte between electrode plates which are arranged in parallel to assemble a parallel-plate capacitor, and applying a direct-current signal to carry out electrowetting treatment, thereby obtaining the sulfide solid electrolyte based on ionic liquid electrowetting. The specific ionic liquid is introduced into the interface of the sulfide solid electrolyte and the negative electrode for electrowetting treatment, so that the interface contact angle is effectively reduced, the interface wettability is improved, the interface impedance is reduced, the electrochemical performance of the all-solid-state battery is improved, and the cycle life of the all-solid-state battery is prolonged. The method particularly focuses on the use of imidazole and pyridine ionic liquids, and selects the appropriate ionic liquid for the lithium metal negative electrode material to realize the optimal interface modification effect.

The invention provides a preparation method and application of a novel cross-linked polyarylpyridine anion exchange membrane, and the preparation method comprises the following steps: using one or more aromatic compounds as a polymer monomer main chain, and condensing with 4-acetylpyridine under the catalytic action of superacid to obtain a polymer intermediate; a quaternary ammonium salt alkenyl compound is introduced as a crosslinking agent, and crosslinking is completed by heating in the film forming process. The introduction of the novel cross-linking agent is beneficial to the construction of a two-dimensional membrane structure and can improve the mechanical properties of the anion exchange membrane, the heating cross-linking condition is beneficial to the rapid adjustment of the cross-linking degree of the ion exchange membrane and the reduction of the swelling coefficient of the ion exchange membrane during use, and the quaternary ammonium salt alkenyl compound is beneficial to the construction of an ion exchange channel and the reduction of the membrane resistance. The ion flux is improved; the anion exchange membrane has excellent spatial size stability and membrane framework stability, strong oxidation reduction resistance, strong flexibility, long service life and the like, and can be applied to the fields of flow batteries and the like. # imgabs0 #

The invention discloses a non-aqueous electrolyte additive for Prussian blue and analogues thereof, an electrolyte and a sodium-ion battery, and relates to the technical field of sodium-ion batteries, the non-aqueous electrolyte additive comprises a silane additive, the silane additive comprises a compound with a Si-O structure or / and a compound with a Si-N structure, in the silane additive, the silane additive comprises a compound with a Si-O structure and / or a compound with a Si-N structure, the mass ratio of the compound with the Si-O structure to the compound with the Si-N structure is (10: 0)-(0: 10), the mass percentage content of the electrolyte additive in the electrolyte is 0.5-10%, and compared with a contrast sample without the electrolyte additive, the electrolyte and the sodium ion battery prepared by using the electrolyte additive provided by the invention have the advantages that the charge-discharge rate of the contrast sample is 1C, the charge-discharge rate of the sodium ion battery is greatly improved, and the charge-discharge rate of the sodium ion battery is greatly improved. The first charge-discharge capacity and the cycle performance are obviously improved, and the capacity retention ratio is still 90% or above after 200 cycles.

The invention belongs to the technical field of lithium ion battery positive electrode materials, and particularly relates to a spinel phase Li4Mn5O12 coated high-nickel positive electrode material as well as a preparation method and application thereof. A substrate of the material is a high-nickel positive electrode material, a coating layer is arranged on the surface of the substrate, and the coating layer is spinel-phase Li4Mn5O12 nanoparticles; the spinel phase Li < 4 > Mn < 5 > O < 12 > accounts for 1%-3% of the high-nickel positive electrode material by mass; the chemical general formula of the high-nickel positive electrode material is LiNi < 1-x-y > Co < x > Mn < y > O < 2 >, wherein (1-x-y) < lt > is greater than or equal to 0.8; 1, 0lt; xlt; 0, 0, 0, 0; yt; Yt; and 0.2 part. The spinel with relatively high lattice matching degree with the high-nickel positive electrode material can avoid a coating layer fracture phenomenon caused by volume expansion of the coating layer; a spinel three-dimensional lithium ion diffusion channel is adopted, so that the de-intercalation rate of lithium ions is increased, and the rate capability of the high-nickel positive electrode material is enhanced.

The invention discloses a potassium-doped chain-shaped manganous-manganic oxide positive electrode material and a preparation method and application thereof, and belongs to the field of aqueous zinc ion batteries, and the preparation method comprises the following steps: preparing a mixed solution of isopropanol and deionized water; the preparation method comprises the following steps: under magnetic stirring, dissolving manganese acetate, potassium chloride and nitrilotriacetic acid into a mixed solution, and preparing K-Mn-NTA, namely a K-Mn-NCs precursor, through a hydrothermal method; then, K-Mn3O4-NCs is prepared through an annealing method; and finally, carrying out in-situ polymerization on polyaniline on the K-Mn3O4-NCs to obtain the K-Mn3O4-NCs coated PANI. When the positive electrode material is applied to the zinc ion battery, the cycle performance and the rate capability of the zinc ion battery can be improved, the conductivity of the positive electrode material is improved, the dissolution of Mn is inhibited, and the electrochemical performance of the zinc ion battery is improved.

The invention belongs to the technical field of lithium metal battery preparation, and particularly relates to a metal lithium negative electrode high-entropy current collector and a preparation method and application thereof. The preparation method of the metal lithium negative electrode high-entropy current collector comprises the following steps: with a current collector as a substrate, sputtering a high-entropy alloy target material on the current collector substrate by adopting a first magnetron sputtering mode to construct a high-entropy coating; sputtering a metal lithium target material on the surface of the high-entropy current collector by adopting a second magnetron sputtering mode, and depositing to obtain a metal lithium film layer; the metal lithium negative electrode high-entropy current collector is obtained. The high-entropy coating is deposited on the current collector substrate through magnetron sputtering, and due to the physical and chemical properties of the high-entropy coating, the surface energy state is regulated and controlled by regulating and controlling the components of the high-entropy coating, so that the nucleation potential barrier of lithium can be reduced, and the nucleation growth process of the lithium can be regulated and controlled; and lithium is uniformly deposited on the current collector, so that the cycling stability and the cycling coulombic efficiency of the high-specific-energy metal lithium negative electrode are ensured.

The present invention belongs to the field of fast mechanical switch operating mechanism, and discloses an electromagnetic repulsion mechanism coil based on a slotted yoke, comprising: a coil frame, a baffle, a fastener, a winding coil and a yoke; the yoke is a radially slotted separate structure, a coil frame is arranged at the center of the yoke, the outside of the yoke is surrounded by fasteners and fixed together on the baffle, and a winding coil is arranged inside the yoke; the flow path of the induced eddy current in the yoke is increased by radial grooving, and the eddy currents in the yokes on both sides of the slots are in opposite directions, which offsets the demagnetization effect of the eddy current, reduces spatial magnetic leakage, improves energy conversion efficiency, and improves driving efficiency. The electromagnetic repulsion mechanism coil provided by the present invention can effectively reduce the eddy current loss and magnetic saturation effect of the yoke itself, help reduce spatial magnetic leakage, and improve the driving efficiency of the electromagnetic repulsion mechanism.

According to the ultra-low power consumption Doppler radar chip capable of reducing the duty ratio and improving the impedance and the method thereof, the chip comprises a register, a control circuit, an analog delay circuit, an impedance control switch, a differential amplifier and the like, and the charge leakage amount of a sampling capacitor during the non-working period of a radio frequency circuit is reduced by improving the turn-off impedance of a frequency mixer; and the input impedance of the amplifier is improved to reduce PWM ripples on an intermediate frequency signal, so that the detection performance of a radar chip during intermittent working of a radio frequency circuit under the control of a PWM power-saving pulse is maintained as much as possible, a conventional power-saving mode is changed into an ultra-low power consumption mode, and the working current of a radar module is reduced from several milliamperes to dozens of microamperes. The method can be used for any motion induction radar sensor chip and module with power-saving control, especially a battery-powered access control system and a low-cost bulb lamp in a capacitor voltage reduction mode of high-voltage partial-voltage power supply.

The invention relates to the technical field of energy storage, in particular to graphite and a preparation method and application thereof. Therefore, when the negative electrode plate is applied to a battery, the cycle performance of the battery can be improved, and the service life of the battery can be prolonged. A graphite having a D50 of 8 [mu] m to 35 [mu] m and a single-peak or double-peak peak pattern in particle size distribution; the graphitization degree of the graphite is GD, the GD ranges from 88% to 95%, and the GD / D50 ranges from 2.6% to 11.5%.

The invention discloses a screening method for a riboswitch capable of specifically recognizing doxycycline as well as rational transformation and application of the riboswitch, and belongs to the field of gene expression regulation and control. The invention provides a doxycycline specific riboswitch, establishes a high-throughput screening method based on a flow cytometry, and obtains the doxycycline riboswitch with further improved activation multiple by means of computer-aided prediction of binding sites of the riboswitch and calculation of mutation sites. According to a dose reaction curve, the riboswitch shows linear correlation at 40-100 [mu] g / L, and meanwhile, the constructed whole-cell sensor is low in price, high in stability and simple to operate, and can be used for on-site rapid detection.

The invention relates to a floating scraping strip assembly, a cleaning module, cleaning equipment and a cleaning system.The floating scraping strip assembly can be located in the cleaning module, and the floating scraping strip assembly comprises a fixed support; the floating support is installed on the fixed support and is in sliding fit with the fixed support, the floating support comprises a first main body part and a second main body part which are oppositely arranged in a spaced mode, and the first main body part is connected with the second main body part; and the scraping strip is mounted on one side of the first main body part. According to the floating scraping strip assembly, the cleaning effect of the cleaning equipment can be improved, the cost of the floating scraping strip assembly is low, and the service life is long.

The invention provides a composite positive electrode material, a preparation method thereof, a positive electrode plate containing the composite positive electrode material, a battery and an electric device. The composite positive electrode material comprises a positive electrode active material and a coating layer, the coating layer coats at least part of the surface of the positive electrode active material, the coating layer comprises a composite material, the composite material comprises particles containing an M simple substance and a lithium ion conductor material attached to the surfaces of the particles containing the M simple substance, and M comprises at least one of S, Se and Te.

The invention relates to the technical field of batteries, in particular to a positive electrode material and a preparation method thereof, a positive plate and a sodium ion battery. The positive electrode material comprises: a) a base material having a chemical formula of Na < 3 + x + y > V < 2-x-y > CoxCuy (PO4) 3, 0.01 < = x < = 0.12, 0.01 < = y < = 0.12, and 0.02 < = x + y < = 0.2; b) a metal oxide anchored to a portion of the surface of the matrix material; and c) a carbon coating layer arranged on at least part of the surface of the matrix material anchored with the metal oxide. After Co < 2 + > and Cu < 2 + > double-element doping, lattice distortion can be formed in the material, an ion transmission channel is widened, the diffusion resistance of Na < + > in the material is reduced, and diffusion kinetics is improved.

The invention discloses a method for constructing a plunger pump digital twin system based on a CFD result. The method comprises the following steps: constructing a flow field calculation model of a plunger pump; the working condition parameters serve as input, physical field data in the plunger pump are obtained through a CFD solver, and a set of input and output data pairs are obtained; determining the change gradient according to the weight of the working condition parameter, updating the working condition parameter, repeatedly carrying out CFD solution until the value of the working condition parameter exceeds a set range, and gathering all input and output data pairs to obtain a sample data set; constructing an order reduction model of the plunger pump by utilizing a model order reduction technology, and training the order reduction model by adopting a neural network until a standard mean absolute error of the order reduction model meets a set requirement; and applying the trained order reduction model to a digital twin system, and inputting local real-time data of the plunger pump detected by a physical sensor. According to the invention, real-time monitoring and display of operation of the plunger pump are realized.

The invention discloses a preparation method of a lithium manganese iron phosphate battery positive electrode material, and belongs to the technical field of battery positive electrode material preparation. The preparation method of the lithium manganese iron phosphate battery positive electrode material comprises the following steps: (1) adding a lithium source, a manganese source, an iron source, a phosphate radical source and polyacrylonitrile into a container, then adding N, N-dimethylformamide as a solvent, stirring under a water bath heating condition to obtain a spinning solution, stirring and mixing the spinning solution with a composite organic matter, and then, carrying out ultrasonic treatment to obtain a precursor solution; carrying out ultrasonic treatment, and then carrying out electrostatic spinning to obtain a positive electrode material precursor; (2) after aging the positive electrode material precursor, transferring the positive electrode material precursor into a tubular furnace for heat treatment to obtain a carbonized positive electrode material; and (3) carrying out ball-milling mixing on the composite carbon nanotube and the carbonized positive electrode material, and pressing to obtain the lithium manganese iron phosphate battery positive electrode material. The positive electrode material prepared by the method has excellent cycle performance, structural stability and rate capability.

The invention discloses a two-stage partition optimal configuration method for voltage regulation resources containing a high-density photovoltaic power distribution network, and belongs to the technical field of power coordinated configuration planning. Comprising the following steps: generating a high-precision typical photovoltaic scene and a high-precision limit photovoltaic scene based on historical big data; carrying out two-step site selection on voltage regulation resources by utilizing subarea roughing configuration areas and subarea fine selection configuration nodes; and constructing a two-stage power distribution network voltage regulation resource constant volume model. According to the configuration method, the photovoltaic reactive output potential can be fully mobilized, the OLTC action times and the configuration capacity are reduced, the calculation dimension can be greatly reduced, the algorithm convergence capability is improved, the configuration is more appropriate to the scene, and meanwhile the economical efficiency, robustness and applicability of the configuration are improved.

The utility model discloses a heating system utilizing compressed air energy storage compression thermal coupling ground source heat pump, which belongs to the technical field of compressed air energy storage, and comprises a compressed air energy storage system and a ground source heat pump system, the water side of the steam-water cooler in each compressed air energy storage compression unit is connected with the cooling tower through a cooling water circulation pipeline, and the ground source heat pump system is connected with the cooling water circulation pipeline. According to the compressed air energy storage system, compression heat in the compressed air energy storage process can be stored in the soil in the non-heating season through comprehensive utilization of equipment such as the ground heat exchanger and the ground source heat pump unit arranged in the compressed air energy storage system and pipelines, the cross-seasonal heat storage mode is adopted, the ground source heat pump system is combined, and the energy storage efficiency is improved. The utilization efficiency of waste heat and the energy efficiency of the whole compressed air energy storage system are improved while heating is achieved.

The present application provides a circuit module and an electronic device, the circuit module comprising: a power input end connected to a first input end of a first switch tube, and an output end of the first switch tube connected to a power output end; the power input end is connected to a boost unit input end, and an output end of the boost unit is connected to an energy storage unit input end, and an output end of the energy storage unit is connected to a DC conversion unit input end, and an output end of the DC conversion unit is connected to a first input end of a second switch tube, and an output end of the second switch tube is connected to a power output end; the power input end is connected to a first input end of a comparison unit, and a second input end of the comparison unit is used to input a preset threshold value, and an output end of the comparison unit is respectively connected to a second input end of the first switch tube and a second input end of the second switch tube; when a power supply voltage input to the power input end is greater than a preset threshold value, the power supply voltage is output to the power output end; or, when the power supply voltage is less than or equal to the preset threshold value, the conversion voltage is output to the power output end.

The invention belongs to the field of sodium-ion batteries, and discloses a high-voltage-resistant sodium-ion battery positive electrode material which comprises a core layer and a coating layer, the chemical formula of the core layer is Na < x > Ca < y > (NiFeMn) < 0.33 > x (1-z-e) Al < z > Mg < e > O < 2 >; the chemical formula of the coating layer is Na3La2 (BO3) 3. (AFm) n; 0.99 < = x + y < = 1.04, 0.01 < = y < = 0.05, 0.01 < = z < = 0.1, 0 < = n < = 0.05, 0.0023 < = e < = 0.023; a is Ca and / or Al, and m is the valence state of the A element. According to the positive electrode material, through doping and coating of the core layer, the stability of the core layer material, the coating material and the interface stability of the core layer material and the coating material are realized, particularly, the surface stability of the doped core layer is remarkably improved, and the capacity and the cycle performance under the condition of high voltage are improved. Meanwhile, the invention also provides a preparation method of the high-voltage-resistant sodium-ion battery positive electrode material.

The invention discloses a flexible dynamic low-frequency wind power system multi-body coordination ride-through control method and system, and the method comprises the steps: obtaining the voltage of a power frequency system, and inputting a power-matched low-frequency AC energy consumption device according to the power of the power frequency system before a fault when the fault of the power frequency system is judged according to the voltage of the power frequency system. According to the method, overvoltage and overcurrent in the flexible dynamic low-frequency wind power system can be effectively reduced, and the fault ride-through performance of the system is improved.

The invention discloses a composite bipolar molecule for a water-soluble dual-electrode flow battery system as well as a preparation method and application of the composite bipolar molecule, and the composite bipolar molecule for the water-soluble dual-electrode flow battery system is prepared by the following preparation steps: S1, taking nitroxide free radical piperidinol and acyl chloride as raw materials, and adding a catalyst to carry out acylating chlorination reaction; and S2, carrying out a quaternization reaction with 1-propanesulfonyl-4, 4 '-dipyridyl to synthesize the water-soluble bipolar composite molecular structure. The bipolar composite molecule has the beneficial effects that the bipolar composite molecule can be used for positive and negative electrode materials of a water-soluble organic flow battery system, so that the influence caused by cross contamination between electrode materials can be avoided, and the stability of battery circulation is improved. Meanwhile, the organic dual-electrode flow battery system is suitable for a battery environment using an in-situ generated electrolyte, has the advantages of low cost, stable charging and discharging performance, high safety, high active material solubility and the like, and can meet the large-scale energy storage requirement.

The invention discloses a two-wheel wheel core driving clutch disc integrated type self-adaptive automatic speed changing electric driving system. The system comprises a box body, a main shaft, a motor assembly, a speed reducing assembly, a frame clutch disc mechanism and a self-adaptive transmission sensing mechanism, wherein the frame clutch disc mechanism and the self-adaptive transmission sensing mechanism are mainly arranged in a rotor. Each clutch unit axially moves back and forth in the frame clutch disc mechanism in an elastic pressure-equalizing sorting mode under the combined acting force of traction force and driving resistance, and work tasks such as power transmission, non-power transmission, transmission direction change and power distribution are completed. The inner friction plates and the outer friction plates are alternately arranged, and each equidistant space is always kept in a pressure-equalizing sequence under the elastic action of the outer elastic rings and the inner elastic rings, so that when the movable pressing disc releases pressure, each transfer synchronous check ring synchronously pushes the inner friction plates at the first time, and each inner elastic ring and each outer elastic check ring synchronously generate elastic release; gaps are synchronously formed between all the outer friction plates and all the inner friction plates, and the abrasion resistance, stability and reliability of the friction clutch are improved.