1002 results about "Lead–acid battery" patented technology

The invention provides a rapid welding storage battery busbar structure and a manufacturing process, and relates to the field of lead-acid storage batteries, the rapid welding storage battery busbar structure comprises a plate group, a non-lead metal strip, a non-lead metal positive terminal and a non-lead metal negative terminal, the non-lead metal strip and the non-lead metal positive terminal are made of metal or alloy with the conductivity higher than that of lead, and the non-lead metal strip is electrified to be rapidly heated and is welded with the cluster group tab and the non-lead metal positive and negative terminals at the same time, and after being firmly welded, the non-lead metal strip is cut to form a busbar and is sealed by glue. According to the lead-acid storage battery, metal with the conductivity higher than that of lead is adopted to replace lead and lead-based alloy to serve as the busbar of the lead-acid storage battery, the gravimetric specific energy of the lead-acid storage battery is improved, the material cost of the lead-acid storage battery is reduced, the mode of welding by heating the metal strip is adopted to replace the technology of manufacturing the busbar through hot melting of lead, the production efficiency is improved, and the energy consumption is reduced; meanwhile, clean production is achieved, and lead pollution in the traditional production process is avoided.

The invention provides a battery running state monitoring and evaluating method and system, electronic equipment and a storage medium, and relates to the technical field of battery monitoring. The method comprises the following steps: collecting multi-mode monitoring data of a battery in a charging and discharging process; a multi-view encoder based on deep learning pre-processes the multi-modal monitoring data to obtain a multi-modal fusion feature vector; performing causal chain reasoning on the multi-modal fusion feature vector based on a preset fusion lead-acid storage battery knowledge graph to obtain a battery state causal chain, and performing state evaluation on the lead-acid storage battery based on the battery state causal chain to obtain a real-time state evaluation result; inputting the multi-modal fusion feature vector into a preset battery performance degradation trend estimation model to obtain a battery performance degradation trend; and comprehensively evaluating the state of the lead-acid storage battery based on the real-time state evaluation result and the battery performance degradation trend to obtain a comprehensive evaluation result. According to the method, the accuracy of the state evaluation result of the lead-acid storage battery is improved.

The invention belongs to the technical field of echelon recycling of retired lead-acid storage batteries, and particularly relates to a lead-acid storage battery capacity consistency screening method based on electrochemical impedance spectroscopy characteristic parameters. The method comprises the following steps: by taking 104 power grid decommissioned GFM series valve-regulated sealed lead-acid storage batteries as objects, firstly, measuring an electrochemical impedance spectrum in a range of 0.01 Hz-1 kHz by utilizing a Coster CS2350H electrochemical workstation, acquiring data by injecting a tiny voltage signal, and calculating impedance through Fourier transform; and then the actual residual capacity is measured through a specific charging and discharging process by using charging and discharging testing equipment. According to a measured impedance spectrum curve, after effectiveness is detected through KK transformation, part of frequency band data is removed, LR (CR) (QR) is selected to establish an equivalent circuit model, impedance spectrum fitting is carried out to determine capacity consistency screening characteristic parameters, finally 24 single batteries with good capacity consistency are screened out from 104 batteries to be recombined and reused, the difference between the maximum capacity and the minimum capacity of the selected batteries is only 48Ah, and the maximum capacity and the minimum capacity of the selected batteries are only 48Ah. And an effective way is provided for improving the screening efficiency and resource reutilization of the retired lead-acid storage battery.

The invention relates to a test device and method for detecting the permeability of a polar plate, and the device comprises a mold which is used for bearing and sealing a sample and is provided with an air inlet and an air outlet; the gas supply source is communicated with the gas inlet of the mold through a gas inlet pipeline and is used for providing gas for testing for the mold; the pressure regulating filter is arranged on the gas inlet pipeline and is used for regulating the gas pressure of the gas supply source and filtering the gas; the differential pressure gauge is used for detecting upper and lower end pressure difference of the sample; and the gas flow meter is arranged on a gas outlet pipeline communicated with the gas outlet and is used for detecting the flow of gas penetrating through the sample. The device quantitatively detects the permeability of the lead-acid storage battery pole plate based on the gas pressure difference, can also be used for detecting the permeability of other porous materials, and is wide in application range.

The invention discloses a lead-acid storage battery with uniform acid, and belongs to the technical field of batteries. The lead-acid storage battery comprises a tank body with an opening at one end, a cover body matched with the tank body, and monomer cells which are assembled in the tank body and are sequentially connected, and positive plates, negative plates and partition plates of the monomer cells are all horizontally arranged. After 100 times of cycle tests, the internal acid density deviation of the battery is less than or equal to 0.002 g / mL, and the capacity and the specific energy are both improved compared with those of a traditional lead-acid battery. By horizontally arranging the positive plate, the negative plate and the partition plate, acid layering caused by gravity is eliminated, so that acid is uniformly distributed on the same horizontal plane, and the utilization rate of active substances at the middle and lower parts of the polar plates is further improved; modularized soft package single battery cells are longitudinally stacked, traditional lead cast welding is replaced by PCB welding series connection, and flexible combination of the battery cells is achieved.

The invention relates to the technical field of lead-acid storage batteries, and discloses an automobile lead-acid storage battery health prediction method, device and equipment and a storage medium, and the method comprises the steps: detecting the SOC value and voltage value of a lead-acid storage battery when the current state of a vehicle meets the triggering condition of battery health prediction; analyzing the SOC value and the voltage value, and determining whether the vehicle meets a current sampling condition or not; if the current sampling condition is met, sampling the lead-acid storage battery in a preset time period to obtain the distribution proportion of the current value in different preset current intervals; and predicting the battery health of the lead-acid storage battery according to the distribution proportion to obtain the battery health level. According to the method, the problem of inaccurate prediction caused by dependence on multi-factor complex calculation, large vehicle end calculation resource load, no focusing on core parameters and lack of lead-acid battery characteristic adaptation in the existing lead-acid battery health prediction is solved.

The invention relates to the technical field of lead-acid storage batteries, in particular to a preparation method of a rare earth alloy for a lead-acid storage battery, which comprises the following steps: smelting refined lead and rare earth elements in a crucible electric furnace; the heating rate of the crucible electric furnace at each collection moment is adjusted; after smelting is finished, rare earth alloy liquid is obtained, and an intermediate rare earth alloy is prepared through an ingot casting technology; the method comprises the following steps: melting refined lead in a lead melting pot, heating, sequentially adding silver and sodium, stirring, heating again, adding calcium-aluminum alloy, tin and a protective agent, smelting, adding the intermediate rare earth alloy, keeping a heating state, and stirring to obtain the positive grid rare earth alloy. The heating rate in the rare earth alloy smelting process is adjusted, the rare earth element utilization rate is increased, and rare earth alloy elements are evenly distributed.

The present invention provides a full negative pressure vacuum charging process and equipment for lead-acid batteries. During the process, a negative pressure of 0.03 - 0.1 Mpa is maintained throughout the charging process. Five charge-discharge stages are adopted. After the first four charge-discharge stages, discharging is carried out. There are a total of 17 steps of charging, lasting approximately 36 hours. Compared with the previous charging time, it is reduced, the charging efficiency is improved, and the power consumption and energy consumption are reduced; the charging acceptance efficiency of the active substances in the battery is effectively improved, thereby increasing the discharge time and discharge capacity of the battery under normal temperature and low temperature conditions, and enhancing the energy density of the battery; the temperature during the charging process of the battery is effectively reduced; in the process equipment, a negative pressure plate is connected to the acid pot on the acid injection port of the battery. The height of the acid pot is such that only the gas in the acid pot is extracted under a negative pressure of 0.03 - 0.1 Mpa, so that the acid liquid will not be extracted. The negative pressure plate extracts negative pressure through a negative pressure pipe, which well matches the full negative pressure vacuum charging process and ensures the charging effect of the aforementioned charging process.

A positioning and clamping apparatus includes a hoisting unit including a support plate, two piston members, two first actuators, two hoisting plates, and an interconnection plate; a transporting unit including a second actuator, two movement rods, and a transporting plate; and a micro adjustment positioning unit including a limiting plate, two follower plates, two sliding members, a third actuator, and a positioning plate. The positioning and clamping apparatus is used for cell electrode plate groups, lead bridges, and lead heads of a lead-acid battery.

The invention belongs to the technical field of lead-acid storage battery manufacturing, and particularly discloses a lead-acid storage battery vacuum formation process and a device thereof.The assembled battery is placed in the vacuum formation device to be pretreated, electrolyte with the preset temperature is injected into the battery under the vacuum condition, and then on the premise that the vacuum state is kept, the lead-acid storage battery is formed. The method comprises the following steps: carrying out segmented constant-current charging on a battery, carrying out degassing treatment on the battery by utilizing a vacuum system of a vacuum formation device after formation is completed, checking and adjusting the liquid level of electrolyte in the battery after degassing treatment, carrying out sealing treatment on the battery after liquid level adjustment is completed, and injecting the electrolyte under a vacuum condition, so that the interference of air and bubbles is reduced; the electrolyte can more quickly and uniformly permeate into the polar plate, so that the formation reaction can be more efficiently carried out, and the segmented constant-current formation mode is also beneficial to more reasonable control of the reaction process, improvement of the conversion efficiency of the active substance and shortening of the formation time.

The invention provides an intelligent response nano-film and application thereof in waste lead-acid storage battery electrolyte recycling, and relates to the technical field of waste lead-acid storage battery electrolyte recycling, the intelligent response nano-film breaks through performance limitation of an existing film system through a specific intelligent material structure, and when heavy metal ions such as Pb < 2 + >, Fe < 3 + > and Cu < 2 + > enter the film, the intelligent response nano-film can be recycled, and the service life of the intelligent response nano-film is prolonged. The metal ligands are combined with metal ions to cause local shrinkage or closing of pore channels, so that the active defense and intelligent blocking effects of blocking heavy metals are achieved; and when SO4 < 2-> and H < + > pass through the channel, membrane pore channels are kept in an open state, so that rapid acid flux (namely the amount of substance passing through the membrane layer in unit time) of sulfuric acid is realized. The intelligent response nano film has a programmable aperture of a polymer liquid crystal network and an intelligent response valve mechanism of metal, and selective separation of heavy metal and sulfuric acid is realized by stimulating reversible adjustment of an induced film structure.

The present application relates to the technical field of lead-acid battery electrode, aiming at the problem of thick lead paste on the existing lead-acid battery plate, large resistance during charging and poor rate discharge performance of the battery, a preparation method of lead-acid battery membrane electrode is disclosed, comprising the following steps: adding a binder to the prepared lead paste, rolling the lead paste containing the binder on the lead skin to form a lead paste film layer, immersing the lead skin and the attached lead paste film layer in a sulfuric acid solution, and solidifying and drying after taking out; the binder is polytetrafluoroethylene emulsion or a binder containing polytetrafluoroethylene emulsion. Unlike the high molecular film attached to the surface of the lead-acid battery plate in the prior art, the present application obtains a thin film electrode with thin thickness, uniform active material dispersion, large active material and current collector contact area and good conductivity, and has the advantages of large rate charge and discharge cycle.

The invention discloses a composite cathode and anode plate made of a lead-carbon composite material, the composite cathode and anode plate comprises a current collector, a transition layer and an active layer which are compounded in sequence, the transition layer tightly coats the outer surface of the current collector, the active layer tightly coats the outer surface of the transition layer, and the composite cathode and anode plate is prepared by the following method: S1, preparing the composite cathode and anode plate; raw material pretreatment: placing the carbon material in a vacuum oven; according to the invention, the structural design of the composite negative plate and the preparation process are integrated, so that accurate matching of the raw material ratio and the process parameters is realized, and many defects of the traditional electrode are effectively solved; the three-layer gradient structure improves the interface bonding force, and delamination is avoided; the optimized raw material system and the preparation process have a synergistic effect, so that the hydrogen evolution overpotential is remarkably improved, the internal resistance is reduced, the cycle life is prolonged, the low-temperature performance is improved, the energy density is improved, and a reliable technical scheme is provided for the application of the lead-acid storage battery in the high-end field.

The invention relates to a charging and discharging controller. The charging and discharging controller relates to the technical field of power electronic application. The charging and discharging controller comprises a pre-stage detection circuit, a Boost circuit, a post-stage detection circuit, a control switch and a detection circuit which are arranged on a solar cell panel, after the system is powered on to run the initial program, the running program is selected according to the judgment of the photosensitive element. In the MPPT stage, the controller enables the lead-acid storage battery to receive the maximum output power P of the photovoltaic cell by adjusting the duty ratio D of the switching tube Q. And when the charging current is larger than the overcharge termination current, the storage battery is charged in a constant voltage mode, and meanwhile, the charging current of the storage battery continues to be detected. And when the charging current is lower than 10% of the rated current, switching to a floating charging stage, and charging the storage battery by adopting a constant voltage slightly higher than the voltage of the storage battery in the floating charging stage.

The present invention provides an automatic water replenishing system for traction lead-acid batteries, which relates to the technical field of batteries and solves the technical problem that it is very inconvenient to replenish water by gravity in existing lead-acid batteries. The system includes a one-way pressure relief valve, a controller, a water replenishing device, a flow sensor and a main control liquid level sensor which are respectively connected to the controller in a signal connection manner. The water replenishing device includes a water outlet pipeline, a water return pipeline, a water tank, a pumping motor and a plurality of liquid injection valves; the main control liquid level sensor is located in the liquid injection valve at the end of water injection, and the one-way pressure relief valve and the flow sensor are installed in the water return pipeline. After the battery pack is short of water, the main control liquid level sensor sends a signal, and the controller starts the pumping motor to replenish water to the corresponding sub-control liquid injection valve. After the water replenishment is completed, the return water flushes open the one-way pressure relief valve, and the flow sensor sends a water replenishment completion signal to the controller. The controller controls the pumping motor to close, completing the fully automatic water filling and injection operation for the lead-acid battery. Compared with the existing method of replenishing water by gravity, it is very convenient.

A positioning apparatus includes a support structure including a top plate and legs extending downward from four corners of the top plate; a hoisting unit including a first hoisting plate, piston members, a second hoisting plate, two pressing blocks, and a first actuator; and a clamping unit including two opposite second actuators and two pushing blocks. The positioning apparatus is used for cell electrode plate groups of a lead-acid battery.

The invention discloses a method and a system for estimating the state of charge of a lead-acid storage battery, and relates to the technical field of batteries, standard discharge data and discharge data of the lead-acid storage battery are acquired, capacity prediction is performed on the standard discharge data and the discharge data by adopting a pre-trained discharge capacity detection model, and the state of charge of the lead-acid storage battery is estimated. And obtaining a discharge capacity value and a standard discharge capacity value, and carrying out charge state analysis on the discharge capacity value and the standard discharge capacity value to obtain a charge state estimation value corresponding to the lead-acid storage battery. The technical problem that in the prior art, the state of charge of the lead-acid storage battery is mainly predicted through a pre-trained feedforward neural network model, but most of discharge data in a project is incomplete discharge, so that the model is difficult to obtain an accurate estimation result is solved.

The invention discloses a polymer composite separator for a lead-acid storage battery and a preparation method thereof, and belongs to the technical field of separator preparation, the polymer composite separator comprises the following raw materials by weight: 40-55 parts of ultra-high molecular weight polyethylene, 0.5-1 part of an initiator, 0.5-1.5 parts of sodium allyl thioglutamate, 105-115 parts of silicon dioxide, 10-20 parts of alkyl succinic anhydride modified cyclodextrin, and 180-260 parts of filling oil; the preparation raw materials of the sodium allyl thioglutamate comprise glutamic acid and allyl isothiocyanate, the sodium allyl thioglutamate and the alkyl succinic anhydride modified cyclodextrin are introduced into the preparation raw materials of a traditional PE partition plate, and finally the prepared polymer composite partition plate for the lead-acid storage battery has high porosity and low resistivity; and the anti-oxidation performance is excellent, the puncture-resistant strength is high, and the development of the lead-acid storage battery industry towards the direction of high energy density and long cycle life is facilitated.

The invention provides a method for repairing an electric return lead-acid storage battery by using a zwitter-ion additive, which comprises the following steps of: preparing the zwitter-ion additive with sulfonic acid group and amino group, and compounding the zwitter-ion additive with conductive carbon with acidified surface to prepare repairing liquid; opening an upper cover plate and a safety valve of the battery, adding a certain amount of deionized water, standing, and extracting redundant flowing liquid; after a certain amount of repairing liquid is added, low-current charging is adopted, and electrified pumping is in a barren solution state; the steps are repeated, overcharging is carried out with smaller current, and stopping is carried out; and then the battery air hole cover is reset and fixed again. And finally, testing the repaired battery, and checking the repairing effect. The method can solve the problems that the residual capacity of the returned lead-acid storage battery for electric power is high, and resources are wasted when the lead-acid storage battery is directly subjected to hazardous waste treatment; and meanwhile, the updating frequency of the lead-acid storage battery for power is reduced, and the power operation cost is reduced.

The invention discloses a lead-acid battery production process, and relates to the technical field of lead-acid battery production, and the lead-acid battery production process comprises the following steps: S1, lead powder preparation: carrying out grain cutting and closed Balton ball milling on an electrolytic lead ingot to obtain lead powder with BET0.65-0.75 m / g and apparent density 1.10-1.20 g / cm < 3 >, and the nitrogen-sealed oxygen content of a lead powder bin is less than or equal to 5vol%; s2, grid casting: heating the lead-calcium-tin-aluminum alloy to 480 + / -10 DEG C in a lead smelting furnace, and casting the lead-calcium-tin-aluminum alloy into a grid with the thickness tolerance of + / -0.05 mm through a continuous casting machine; s3, performing paste mixing; the device has the advantages that through side insertion of the inverted dovetail groove, isolation of the hydrophilic PET thin sheet and blocking of the top air curtain, condensate is guided to the collecting tank along the thin sheet and is pumped out in real time, no PbSO4 white ring is left on the surface of the polar plate, and the powder falling rate of the follow-up slicing and vibration procedures is remarkably reduced.

The invention discloses a lead-acid storage battery vent bolt which comprises a bolt body, a cylindrical containing cavity is formed in the bolt body, a clamping groove used for being connected with a gas filtering piece in a clamping mode is formed in the end, corresponding to the containing cavity, of the bolt body, and a long-strip-shaped groove hole is formed in the side wall, corresponding to the other end of the containing cavity, of the bolt body; the suppository core is detachably connected into the containing cavity, a plurality of partition plates are sequentially and obliquely arranged on the suppository core at intervals from one end to the other end, a reverse inclination angle is formed between every two adjacent partition plates, supporting columns are arranged between every two adjacent partition plates, and the partition plates divide a plurality of partition cavities in the containing cavity from one end to the other end. According to the single-layer cover of the lead-acid storage battery, the risk of liquid overflow can be reduced, the single-layer cover is convenient to disassemble and use, and the requirement of an exhaust system for mutually independent unit cells required by the design of a single-layer cover of the lead-acid storage battery is met.

The invention relates to the technical field of repair and recovery of lithium battery lead-acid storage batteries, and particularly discloses an intelligent monitoring system for repair and recovery of a lithium battery lead-acid storage battery. The system comprises a preparation module before battery repair, a first repair stage monitoring module, a second repair stage monitoring module, a third repair stage monitoring module, a test and evaluation module after repair and a database. According to the method, the surface dirt condition before the battery is repaired is monitored, the repairing parameters of all the repairing stages are adjusted according to the battery state changes of the battery in the positive and negative pulse repairing waveform stage, the high-frequency resonance repairing waveform stage and the positive pulse superposition high-frequency repairing waveform stage, and finally the repairing effect of the battery is evaluated. The multi-level repair means can accurately match the requirements of each stage, so that the repair effect is greatly improved, the battery performance is ensured to be fully recovered, the service life of the battery is effectively prolonged, and an effective data basis is provided for the improvement of the subsequent repair means.

The invention relates to a lead-acid battery negative electrode additive as well as a preparation method and application thereof, and belongs to the technical field of lead-acid storage batteries. The additive consists of sulfonated modified lignosulfonate (component A), a graphene oxide-carbon nanotube hybrid conductive agent (component B) and a mixture of modified humic acid and boric acid (component C) which are respectively used as a crystallization template agent, a conductive network construction agent and an interface film forming regulator. During preparation, a component A is prepared through a sulfomethylation reaction, a component B is prepared through ultrasonic mixing of graphene oxide and a carbon nanotube dispersion liquid, a component C is prepared after humic acid is subjected to acid pickling purification and oxidation treatment and then mixed with boric acid, and finally the three components are mixed to obtain a finished product. The additive is added into the negative electrode lead paste, can inhibit negative electrode sulfation, improve electrode conductivity, reduce hydrogen evolution side reaction and prolong the cycle life and charge-discharge efficiency of the battery, and is suitable for production of various lead-acid batteries.

The utility model discloses a lead-acid storage battery grid burr polishing device, which relates to the technical field of battery grids, and comprises a fixed table and a plurality of polishing components arranged on a grid belt conveying path on the fixed table, the polishing brush can be driven to vibrate on the grid belt to polish the grid belt; burrs on the grid belt move along with the grid belt and are polished away through the polishing brush which vibrates continuously, the burrs on the grid belt can be removed, and meanwhile the qualified rate of grid belt production can be effectively improved.

The invention belongs to the technical field of lead-acid storage battery unformed plate lead plaster filling manufacturing, and discloses a device for online automatic detection of unformed plate lead plaster moisture after surface drying, the device comprises a conveying device and a drying kiln mounted above the conveying device, one side of the drying kiln is provided with a controller, and the other side of the drying kiln is provided with a controller. Relative humidity range information can be converted into moisture content information through program setting in the controller, the moisture content and relative humidity data are detected through the dry-wet temperature sensor, the corresponding range can be found out, the heating temperature and the moisture content of the adjustable heating device in the drying kiln are controlled through the controller, the temperature in the drying kiln is reduced, and the temperature in the drying kiln is reduced. On the contrary, if the moisture content is high and the temperature in the drying kiln rises, the temperature in the drying kiln is regulated and controlled in real time, so that moisture detection of the lead plaster on the green plate is realized by detecting the relative air humidity at the tail end of the drying kiln, manual operation is reduced, and the consistency of surface dry moisture of the green plate is improved.

The utility model discloses a waste lead-acid storage battery lead recovery smelting furnace, and particularly relates to the technical field of secondary lead recovery, the waste lead-acid storage battery lead recovery smelting furnace comprises a smelting furnace, a smoke exhaust pipe is fixedly installed on the top of the smelting furnace, a feeding device is fixedly installed on the upper portion of the side wall of the smelting furnace, and a heat exchange assembly is fixedly installed outside the feeding device. The end, away from the smelting furnace, of the smoke exhaust pipe is fixedly connected with the heat exchange assembly. According to the lead recovery smelting furnace for the waste lead-acid storage battery, the heat exchange feeding device and the heat exchange assembly are matched with each other, smelting materials in the feeding barrel can be preheated, meanwhile, in the heat exchange process, spiral plates of the heat exchange assembly rotate to scrape away dust accumulated on the inner wall of the heat exchange barrel, and therefore the heat exchange efficiency is improved. And then the smoke is conveyed into the collecting pipe and finally collected into the collecting box, and the situation that the smoke is accumulated in the heat exchange cylinder for a long time, so that the heat exchange function of the heat exchange cylinder is affected, and the smelting material cannot be preheated is avoided.

A coated battery separator, coated battery gelation composite substrate, or coated battery separator membrane is provided comprising a microporous substrate; and a coating on one or both sides of the microporous substrate. The coating comprises a polymeric binder and inorganic filler or siliceous material. In some examples, the separator is coated on one or both sides of the microporous substrate or membrane, wherein the coating comprises a polymeric binder, siliceous material, and carboxymethyl cellulose (CMC). In some examples, the microporous substrate may be a ribbed microporous substrate comprising polyethylene. Also provided are batteries including the coated battery separator, coated battery gelation composite substrate, or coated battery separator membrane. Such batteries may be improved flooded lead acid batteries, VRLA gel batteries, AGM batteries, storage batteries, or flow batteries.

The invention discloses a positive grid, a preparation method, a positive plate and a lead-acid storage battery, and relates to the technical field of lead-acid storage batteries. The positive grid is prepared from the following components: Ca; al; sn; re; mg; and lead: the balance. The preparation method of the positive grid comprises the following steps: S1, melting lead; s2, first-step slag removal; s3, second-step slag removal; s4, adding metal components; s5, cooling; s6, sampling and testing. The invention also provides a positive electrode plate and a lead-acid storage battery. According to the technical scheme, rhenium can improve the mechanical strength and corrosion resistance of the grid and provide structural support; magnesium and magnesium oxide in the lead paste form magnesium sulfate together, so that the liquid-phase conductivity in a positive electrode deep hole is improved, the liquid-phase ohmic polarization is reduced, the utilization rate of a positive electrode active material is increased, and the state of the surface of a polar plate can be changed and side reaction is reduced by adding rhenium; rhenium affects an interface layer of the polar plate and electrolyte, interface resistance is optimized, ion transmission efficiency is promoted, loss is reduced, and the cycle life is prolonged.

The invention relates to the technical field of wastewater treatment, in particular to a multi-stage treatment method and system for lead smelting wastewater. The method comprises the following steps: acquiring water quality data of the multi-source lead-acid storage battery smelting wastewater, and based on the water quality data, analyzing to obtain a battery wastewater multiphase feature set; on the basis, the information of the stabilized intermediate water body is obtained by dynamically adjusting the hydrogen ion concentration, breaking a complexing structure and preferentially separating fluoride; on the basis, the antimony valence state and the antimony concentration are monitored in real time, the oxidizing agent type and the reaction intensity are matched in a self-adaptive mode, oriented efficient conversion of antimony is achieved, and low-antimony pre-sedimentation water outlet information is obtained; on the basis, according to the dynamic proportion of the inlet water hydrogen ion concentration to the lead and antimony ions, a precipitation path control instruction is automatically switched, a purified water body with lead and antimony synchronously and deeply removed is obtained, and a lead smelting wastewater multi-stage treatment log is output. Harmful pollutants in the lead smelting wastewater process are efficiently removed, the method adapts to water quality fluctuation, consumption reduction and cost saving are achieved, compliance treatment of wastewater is achieved, and environment-friendly and economic values are achieved.

The invention relates to a composite lead-acid storage battery and a preparation process, the composite lead-acid storage battery comprises a bottom groove, and is characterized in that at least one pole piece group is arranged in the bottom groove, the pole piece group comprises a plurality of pole plates, a middle cover matched with the bottom groove is arranged at the top of the pole piece group, and the middle cover is arranged in the bottom groove. The middle cover is provided with a terminal used for being electrically connected with the pole piece group, and the top of the middle cover is provided with a cover piece matched with the middle cover; the two sides, parallel to the direction of the polar plates, in the bottom groove are provided with containing grooves, and sheet-shaped magnetic materials are inserted into the containing grooves. On the basis of the structure of a traditional lead-acid storage battery, containing grooves are additionally formed in the two sides of a battery pole group, sheet-shaped magnetic materials with the same magnetic field direction are placed in the containing grooves, and finally the magnetic material composite lead-acid storage battery is manufactured through sealing and covering. According to the scheme, the structural strength of the lead-acid storage battery can be improved, the bulge deformation failure rate is reduced, the battery assembly pressure is increased, and the consistency and stability of the battery are improved.