391results about "Electrolyte/reactants regeneration" patented technology

The invention belongs to the technical field of batteries, and discloses a composite lithium supplement agent, a positive pole piece, a battery and electric equipment. The composite lithium supplement agent comprises an inner core and a shell covering the inner core, wherein the shell comprises a carbon coating layer; the carbon coating layer comprises a cage-shaped ball structure, and the carbon coating layer has elasticity; the inner core comprises a lithium supplementing material. The composite lithium supplement agent can adapt to the volume change of the lithium supplement material during the first lithium removal, and the contact between the electrolyte and the interior of the composite lithium supplement agent or a decomposition product is avoided, so that the side reaction of an interface is reduced, the gas production is reduced, the battery capacity is improved, and the stability and safety of the battery are favorably improved.

The present invention relates to the field of batteries, and in particular to a high-capacity battery assembly, a repair mechanism, and a repair method for the high-capacity battery assembly, for use in prolonging the service life of high-capacity batteries while solving the problem of having a difficulty in assembling shared pipeline assemblies of existing high-capacity batteries. The high-capacity battery assembly comprises a high-capacity battery and a repair mechanism. The high-capacity battery comprises a case and battery cells arranged in the case; the case is provided with a shared electrolyte chamber; the shared electrolyte chamber is communicated with an electrolyte region of an internal cavity of each battery cell; relief holes allowing poles of the battery cells to extend out are formed in a case top plate; and the pole of each battery cell extends out of a corresponding relief hole of the case top plate, and a case region corresponding to the relief hole is fixedly sealed with a casing of the battery cell. The repair mechanism is connected to the high-capacity battery, and is used for repairing the high-capacity battery after capacity fading or suppressing the fading speed of the high-capacity battery, so as to improve the performance and cycle life of the high-capacity battery.

The invention discloses a sodium ion positive electrode material and a failure re-repairing method thereof.The failure re-repairing method of the sodium ion positive electrode material is used for re-repairing the sodium ion positive electrode material which fails due to exposure to a wet environment and comprises the following steps that S1, the failed sodium ion positive electrode material is washed with absolute ethyl alcohol and then subjected to vacuum drying, and the sodium ion positive electrode material is obtained; the pretreated layered oxygen positive electrode material is obtained; s2, preparing a repairing solvent, wherein the repairing solvent is prepared by dissolving hydrochloric acid modified polyaniline and multi-walled carbon nanotubes in N-methyl pyrrolidone; s3, dissolving the layered oxygen positive electrode material in a repairing solvent, and stirring to obtain a sodium ion positive electrode material to be dried; and S4, carrying out vacuum drying on the sodium ion positive electrode material to be dried, and cooling to obtain the repaired layered oxide positive electrode material. The method can effectively remove moisture and impurities on the surface of the failed material, recover the basic performance, and improve the stability of the repaired material structure, the specific capacity of current discharge and the cycle performance of the material.

The invention provides an organic acid leaching regeneration method of a waste nickel-zinc battery negative electrode material, and belongs to the technical field of resource recycling and reutilization, and the method comprises the following steps: disassembling a waste nickel-zinc battery, separating to obtain a negative electrode sheet, and calcining to obtain negative electrode powder; placing the negative electrode powder in an organic acid solution, ultrasonically stirring to dissolve zinc, and filtering to obtain a leaching solution; adding sodium hydroxide particles into the leachate until white precipitates are generated, standing, filtering and drying to obtain a precursor, and calcining the precursor to obtain zinc oxide powder. According to the method, inorganic acid leaching is adopted, the regenerated product can be used for the nickel-zinc battery, and no waste liquid discharge can be realized. Compared with the prior art, the method has the advantages that organic acid which is small in environmental harm is used, almost no liquid is discharged, zinc can be effectively recycled, and the method is short in process and low in cost. The method has the characteristics of greenness, high efficiency and simple process, and is beneficial to further realization of commercialized development.

The invention discloses a capacity compensation additive and a preparation method thereof, a positive pole piece, a battery and an electric device, the capacity compensation additive comprises a capacity compensation agent and a catalyst-containing carbon material, and the catalyst-containing carbon material coats at least part of the surface of the capacity compensation agent. The capacity compensation additive disclosed by the invention has relatively low decomposition voltage, so that the capacity compensation additive can release active ions at relatively low voltage, and the released active ions can compensate the loss of the active ions in an SEI membrane forming process, so that the capacity of the battery is improved; and side reaction of electrolyte under high voltage and irreversible change and side reaction of a positive electrode active material structure are avoided, so that the cycle performance of the battery is improved.

The current disclosure relate to processes and systems for discharging of rechargeable battery cells, said battery cells having electric poles and one or more vents, the method comprising puncturing a vent of a battery cell, submerging the battery cell in a discharge medium such that at least the electric poles and the punctured vent of the battery cell are covered with the discharge medium, wherein the discharge medium is an electrically conductive fluid, discharging the one or more battery cell until it has reached a target cell voltage threshold by allowing the battery cell to be submerged in the discharge medium for a predetermined processing time t, wherein the target cell voltage threshold is above 0V, then removing the one or more battery cell from the discharge medium.

A method of recovering a used battery and apparatus for recovering the capacity of a secondary battery comprising: (1) preparing a secondary battery with deteriorated lifespan characteristics; (2) heating the secondary battery with deteriorated lifespan characteristics while pressing the secondary battery with deteriorated lifespan characteristics to compress a positive electrode, negative electrode, or separator included in the secondary battery; and (3) charging / discharging the secondary battery with deteriorated lifespan characteristics, the secondary battery having been pressed and heated, and the secondary battery with deteriorated lifespan characteristics may be charged and discharged while being pressed and heated, thereby exhibiting an effect of recovering the capacity of the secondary battery with deteriorated lifespan characteristics.

The present application relates to the technical field of batteries, and particularly to a battery manufacturing process, a battery treatment device, a battery, and a power-consuming device. The battery manufacturing process comprises: obtaining a battery to be subjected to treatment, and subjecting the battery to electrolyte injection; and charging the battery before sodium in the battery is reduced at the negative electrode. In the present application, the battery is charged before sodium in the battery is reduced at the negative electrode; during the process of charging the battery, water can receive electrons at the negative electrode to undergo a reduction reaction so as to produce hydrogen and hydroxy radicals, or water is decomposed in the electrolyte to produce hydrogen ions, and the hydrogen ions can receive the electrons at the negative electrode to undergo a reduction reaction so as to produce hydrogen; in such a way, water in the battery can be removed; after the water removal, sodium is reduced at the negative electrode to produce an elementary sodium metal, thus reducing the risk of the reduced sodium reacting with water, reducing a loss of battery capacity, and improving the cycling performance of the battery.

An embodiment relates to a method for regenerating the capacity of a used battery by connecting one or both terminals of a used battery and a lithium-supplying electrode to an external power supply unit to supply a lithium inventory to the used battery in order to restore a storage capacity of the used battery, and a device for regenerating the capacity of a used battery for implementing the method.

Provided is a battery discharge apparatus, battery discharge system, and battery discharge method which uses a battery as a power source for reverse potential discharge. The battery discharge apparatus includes a discharge processor electrically connected to a first target battery and a second target battery to discharge the first and second target batteries, a first battery loader loaded with the first target battery to electrically connect the first target battery to the discharge processor, and a second battery loader loaded with the second target battery to electrically connect the second target battery to the discharge processor, and the first target battery is discharged by reverse potential discharge using the second target battery.

Embodiments of the present disclosure generally relate to battery management systems, and more particularly relate to a battery regeneration system for optimizing de-sulfation of a lead- acid type storage battery and method thereof The battery regeneration system (100) includes sensors (102), a processor (108), and a memory unit (110). The sensors determine battery parameters during charging and discharging cycles. The processor analyzes the parameters to assess sulphation severity and conductive medium levels in lead-acid battery (104). Using AI- based techniques, processor selects very high-frequency cross-pulsing technique for de- sulfation. The system generates pulse sequence data with adjustable frequency and amplitude, transmitting it to control unit (114) for de-sulfation. Periodically, pulse frequency and amplitude are adjusted within predefined ranges. The control unit receives and applies modified data to lead-acid battery, charging battery to its original condition after de-sulfation. The system also communicates conductive medium level to Battery Monitoring System (BMS) (118).

The invention discloses a sodium ion positive plate and a preparation method thereof, a sodium ion capacitor and a sodium ion battery. The sodium ion positive plate comprises a capacity compensation agent, porous carbon, a sodium ion positive electrode material, a conductive agent, a binder and an auxiliary agent, wherein the capacity compensation agent comprises a positive lithium supplement agent with a first mass percent, and the positive lithium supplement agent is used for reducing the potential of the negative plate containing hard carbon and compensating the irreversible capacity of the negative plate; the index requirements of the positive electrode lithium supplementing agent are as follows: the specific capacity is greater than or equal to 420mAh / g, and the first coulombic efficiency is less than or equal to According to the technical scheme, the high-power characteristic of the sodium ion positive plate is improved, the irreversible capacity of the negative electrode is compensated, the initial coulombic efficiency, the energy density and the cycle life of the sodium ion battery or the capacitor are effectively improved, and the preparation cost of the sodium ion battery or the capacitor is reduced.

The invention provides a method for recovering and modifying a graphite negative electrode material of a failed battery, which comprises the following steps: dispersing a negative electrode piece of the failed battery in water, collecting the graphite negative electrode material separated from a current collector, washing with deionized water for multiple times, and carrying out suction filtration to obtain a recovered graphite negative electrode material; respectively dispersing the recycled graphite negative electrode material, graphene oxide and silicon monoxide in a solvent, mixing the obtained dispersion liquid, and adding a reducing agent for reduction reaction to obtain a precursor composite material; and performing high-temperature carbonization on the precursor composite material to obtain the regenerated graphite negative electrode material. The method combines a recovery process and performance modification of the recovered graphite, is simple to operate and low in energy consumption, and not only can repair the surface of the recovered graphite, but also greatly improves the capacity, rate capability and cycle performance of the recovered graphite by compounding the recovered graphite negative electrode material with the graphene oxide and the silicon monoxide.

The invention relates to the technical field of batteries, in particular to a battery manufacturing process, a battery processing device, a battery and electric equipment.The battery manufacturing process comprises the steps that the battery to be processed is obtained, and liquid injection is conducted on the battery; the battery is charged before sodium in the battery is reduced at the negative electrode. Sodium in the battery is adopted to charge the battery before the negative electrode is reduced, and in the process of charging the battery, water can receive electrons at the negative electrode to generate a reduction reaction to generate hydrogen and hydroxyl, or water is decomposed in electrolyte to generate hydrogen ions, the hydrogen ions can receive electrons at the negative electrode to generate a reduction reaction to generate hydrogen, and the hydrogen ions can receive electrons at the negative electrode to generate hydrogen. Therefore, water in the battery can be removed, after water removal, sodium is reduced at the negative electrode to generate a sodium metal simple substance, the risk that the reduced sodium reacts with water is reduced, the loss of the battery capacity is reduced, and the cycle performance of the battery is improved.

A regeneration method of an all-solid-state battery includes a step of preparing an all-solid-state battery having a cathode that does not contain copper, and a step of executing overdischarge control of the all-solid-state battery. The overdischarge control is control of mitigating reaction variance that is variance in electrode reaction due to charging and discharging of the all-solid-state battery, by discharging the all-solid-state battery until a potential of the cathode becomes lower than an elution potential of copper.

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.

Provided are devices, systems, and methods for rejuvenating degraded energy devices. In one aspect, the present disclosure provides a method for rejuvenating an energy device, the method comprising: using at least one acoustic device to generate acoustic waves to facilitate flow and / or distribution of fresh or unused chemicals into the energy device and to replace and expel aged or used chemicals out of the energy device, thereby rejuvenating the energy device and rendering the energy device suitable for continued usage.

The invention relates to the technical field of lead-acid battery maintenance, and particularly discloses a lead-acid battery repairing device for a communication base station, the lead-acid battery repairing device comprises a repairing table, a liquid pumping unit and a water injection repairing unit, and a liquid pumping pipe in the liquid pumping unit can synchronously deflect towards the overturning side of a lead-acid battery around a rotating shaft under the action of self gravity; therefore, the inlet of the suction channel of the liquid suction pipe is always located in the accumulation area of the electrolyte, so that effective suction of the electrolyte is realized, and incomplete liquid suction caused by retention of part of the electrolyte is avoided; by means of repeated water injection and low-current charging repair, the acid liquor density can be effectively reduced, the solubility product of sulfate can be effectively improved, low-current long-time charging is adopted to reduce ohmic polarization and delay early occurrence of water decomposition voltage, finally, the vulcanization phenomenon is gradually relieved or eliminated in the process of dissolving and converting into active substances, and through repeated charging and discharging, the acid liquor density can be effectively reduced. The vulcanization phenomenon is eliminated, so that the battery capacity is effectively recovered.

The invention discloses a preparation method of an anti-aging lead-acid battery electrolyte, and relates to the technical field of electrolytes. According to the electrolyte, dilute sulphuric acid is adopted as a basic system, and a biological small molecule synergistic inhibitor (sodium glutamate and taurine), organic weak acid salt (triammonium citrate), water-soluble polymer (hydroxypropyl methyl cellulose), a conductive nano material (graphene oxide) and a green deep eutectic solvent (choline chloride-ethylene glycol) are compositely introduced; and a trace amount of aluminum salt and a metal organic catalyst are supplemented. By inhibiting sulfation, relieving grid corrosion, inhibiting gassing and balancing acid concentration, systematic improvement of the cycle life, the charge acceptance and the repair capacity of the lead-acid battery is realized.

[Problem] An object is to provide a lead sulfate coating removal device that has low power consumption and does not damage an electrode of a lead-acid battery.[Solution]A lead sulfate coating removal device implemented by an application specific integrated circuit (ASIC) that removes a lead sulfate coating generated on an electrode of a lead-acid battery includes: a generation unit that generates, on the basis of a signal extracted from the lead-acid battery, a removal signal of the lead sulfate coating having a peak value of 550 mA to 1000 mA, a pulse width of 5 nsec to 100 nsec, and a frequency of 5 kHz to 50 kHz; and a supply unit that supplies the removal signal generated by the generation unit to the electrode of the lead-acid battery.

The invention belongs to the field of batteries, and particularly relates to a method for repairing the capacity of a waste lithium ion battery. The charge-discharge cycle performance of the lithium ion battery is prolonged, and the use cost of the battery is reduced while the pressure of the waste lithium ion battery on the environment is reduced. The method comprises the following steps: deeply discharging the waste lithium ion battery; secondly, free electrolyte and gas in the inner cavity of the waste lithium ion battery are discharged, and impurities in the inner cavity of the waste lithium ion battery are brought out; then, injecting a first electrolyte into the inner cavity of the treated waste lithium ion battery, and standing for a set time; and testing the battery capacity, if the battery capacity reaches a set target value, finishing capacity restoration of the waste lithium ion battery, otherwise, continuing to execute the operation. The method is simple to operate and obvious in capacity recovery effect, and the cycle life of the lithium ion battery is greatly prolonged.

The invention discloses a method for separating a positive electrode active material and a current collector of a waste lithium ion battery, and belongs to the technical field of recycling of the waste lithium ion battery. The method comprises the following steps: discharging and disassembling the waste lithium ion battery pack, and mechanically crushing to obtain a positive electrode current collector loaded with an active material; and activating the positive current collector loaded with the active material by adopting an aqueous solution containing an activating agent, adjusting the pH value of the system to be acidic, adding a positive separating agent to form an interface layer with the positive current collector, stripping, filtering, sorting and drying to obtain the positive current collector and the positive active material. The wettability of the positive electrode active material is improved by adopting the activating agent, so that hydrogen ions and the positive electrode separating agent can enter the aluminum foil layer to form a new interface layer, and the positive electrode active material is stripped. The method is high in separation efficiency, simple and convenient to operate and free of damage to the positive electrode active material.

The present invention relates to a method for recovering the performance of a halide-based solid electrolyte. More specifically, when the halide-based solid electrolyte is heat-treated after exposure to air, the ionic conductivity of the halide-based solid electrolyte reduced by the air exposure is recovered to a level similar to that before the air exposure.

The invention provides a lithium-rich lithium supplement agent with high air stability and a preparation method thereof, and relates to the field of lithium ion battery lithium supplement agents. The preparation method of the lithium-rich lithium supplement agent with high air stability comprises the following steps: low-temperature carbonization coating and polymerization coating. According to the lithium-rich lithium supplement agent with high air stability and the preparation method, the air stability, the isolation performance and the water absorption of the lithium-rich lithium supplement agent are improved, the dynamic performance of the lithium-rich lithium supplement agent is improved, and the matching performance of the lithium-rich lithium supplement agent and a positive electrode material is improved; and the electrical performance is further improved.

A recycling method for a lithium ion secondary battery that can improve the implementation efficiency is provided. The recycling method for a lithium ion secondary battery disclosed herein includes a Li precipitating step of performing pulse charging and discharging on a lithium ion secondary battery in a low temperature environment so that Li is precipitated on a negative electrode, and an active material breaking step of repeatedly charging and discharging the lithium ion secondary battery in a range where a positive electrode is in a low potential region so that a positive electrode active material is broken.

To provide a nonaqueous electrolytic solution, which provides improved properties over nonaqueous electrolytic solutions of the prior art.SOLUTION: The invention relates to the use of a compound of Formula I in a nonaqueous battery electrolyte formulation, where W is independently selected from the group consisting of H, F, Cl, Br and I; Z is independently selected from the group consisting of H, O(CW2)pCW3, (CW2)pCW3, OCY3, OCW3, polyalkylene glycol and polyolester; n is an integer from 1 to 1000; one of T1 and T2 is W, and the other is (CY2)mCY3; Y is independently selected from the group consisting of F, Cl, Br and I; and p is an integer from 0 to 9.SELECTED DRAWING: None

This invention discloses a battery, a battery pack, and an electrical device. The battery includes a casing, a core, a column, a first membrane, and a second membrane. The casing has an inner cavity, and the core is assembled within the inner cavity. The column supports the core to prevent it from collapsing. The column has a first cavity for storing a lithium replenishment medium and a second cavity for storing a fire-fighting medium. The first cavity has a first hole in its wall, and the second cavity has a second hole in its wall. The first membrane seals the first hole. When subjected to a first pressure, the first membrane ruptures, allowing the lithium replenishment medium in the first cavity to flow into the inner cavity through the first hole. The second membrane seals the second hole. When subjected to a second pressure, the second membrane ruptures, allowing the fire-fighting medium in the second cavity to flow into the inner cavity through the second hole. The second pressure is greater than the first pressure. The battery of this invention enables secondary lithium replenishment, improving the problems of short battery life and severe battery degradation. Furthermore, it has a fire-fighting function in the event of thermal runaway or rapid gas generation, ensuring the safety of battery use.

The invention discloses a lithium battery electrolyte safety performance improving method combined with a graphene technology, and relates to the technical field of electrochemistry, and the method comprises the following steps: calculating a safety risk coefficient of electrolyte operation data; forming a critical value of the safety risk coefficient; when the safety risk coefficient is smaller than the critical value, no processing is carried out; when the safety risk coefficient is greater than a critical value, generating a repair scheme; based on historical data, analysis is carried out to obtain a promotion consumed time distribution condition; decomposing the performance boosting packet into local boosting packets; and the local lifting package is used for improving the performance of the electrolyte of the lithium battery. According to the method, the safety risk coefficient of the electrolyte operation data is calculated, the performance improvement package is decomposed into at least one local improvement package, the updating time point is set for the local improvement package, and the selection of repair and performance improvement is determined, so that the adopted mode is a relatively economical improvement repair mode, and mutual conflicts during parameter updating are avoided.

The present disclosure provides a lithium supplementing diaphragm for a lithium ion battery, a lithium ion battery, and a preparation method, and belongs to the field of batteries. The lithium supplementing diaphragm comprises a diaphragm base, a pre-lithium layer, a first protective layer, and a second protective layer. The pre-lithium layer is located on one side of the diaphragm base, and the first protective layer is located on the side of the pre-lithium layer away from the diaphragm base. The second protective layer is arranged on the first surface of the diaphragm base. The material of the second protective layer comprises a polymer and an ester compound. The polymer is insoluble in the electrolyte of the lithium ion battery. The ester compound is soluble in the electrolyte of the lithium ion battery. The second protective layer of the lithium supplementing diaphragm of the present disclosure is an organic material layer, and the preparation method does not need to be carried out in a vacuum, thereby being low in cost. The first protective layer and the second protective layer isolate the lithium metal in the pre-lithium layer from water, carbon dioxide, oxygen, nitrogen, and the like in the air during the assembly process, thereby reducing the consumption of lithium in the pre-lithium layer and improving the utilization rate of lithium. The technical problems of the prior art, such as high lithium consumption of the lithium supplementing diaphragm and complex preparation method, are solved.

The present application relates to an electrode plate (10) and a manufacturing method therefor, an electrode assembly, a secondary battery (100), and a power consuming device. Lithium replenishing spaces (13) are disposed on a current collection structure (11), such that the lithium replenishing spaces (13) communicate with an active layer (12) on one side; and the battery (100) is replenished with lithium by using lithium replenishing agents in the lithium replenishing spaces (13) to offset an irreversible lithium consumption in a cycle process, so as to increase the total capacity and the energy density of the battery (100). According to the present application, due to average weights MA of corresponding active materials in different distribution regions (14) on the active layer (12), a sum V0 of internal volumes of lithium replenishing spaces (13) corresponding to each of the distribution regions (14) is controlled in a positively correlated manner based on a change in the average weights of the active materials in the different distribution regions (14), that is, a sum of internal volumes of corresponding lithium replenishing spaces (13) in a second distribution region (14b) is relatively large, and a sum of internal volumes of corresponding lithium replenishing spaces (13) in a first distribution region (14a) is relatively small. As a result, the different distribution regions (14) are replenished with different lithium. This implements quantitative and precise lithium replenishment, thereby increasing the energy density of the battery (100) and prolonging the lifespan of the battery.