146results about "Electrolyte/reactants regeneration" patented technology

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.

[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.

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 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.

The battery processing method for processing the lithium-ion battery that includes a positive electrode material and a negative electrode material and is configured by laminating the positive electrode material and the negative electrode material in a lamination direction, and wherein gas is internally present, the battery processing method including: a gas extrusion step of extruding the gas toward a peripheral edge portion of the lithium-ion battery in a plane perpendicular to the lamination direction; and a cooling and charging step of depositing lithium on the negative electrode material by charging the lithium-ion battery while cooling.

To provide a performance recovery method for a lithium-ion secondary battery that can achieve an optimal recovered state of the lithium-ion secondary battery.SOLUTION: In a method for recovering performance of a lithium-ion secondary battery by doping lithium ions into a positive electrode included in the lithium-ion secondary battery whose capacity has been reduced, the doping of lithium ions is performed by discharge using a lithium electrode as a counter electrode in an electrolyte, and the discharge is performed to a predetermined potential V_E (V).SELECTED DRAWING: Figure 6

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, so as to prolong the service lives 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 includes a high-capacity battery and a repair mechanism. The high-capacity battery includes a housing and battery cells arranged in the housing; the housing is provided with an electrolyte region of the inner cavity of each battery cell; an avoidance hole capable of enabling an electrode terminal of each battery cell to extend out is formed on a housing top plate; the electrode terminal of each battery cell extends out from the avoidance hole on the housing top plate, and a region of the housing corresponding to the avoidance hole is fixed and sealed with a shell of the battery cell; and the repair mechanism is connected with the high-capacity battery, and is configured for repairing the high-capacity battery having an attenuated capacity or inhibiting the attenuation speed of the high-capacity battery, so as to improve the performance of the high-capacity battery and prolong the cycle life of the high-capacity battery.

A method for periodic deep discharge to extract lithium in silicon-dominant anodes may include providing a cell comprising a cathode, a separator, and a silicon-dominant anode; charging and discharging the cell through a plurality of cycles; and, following the plurality of cycles, performing one or more deep discharge cycles, where each of the one or more deep discharge cycles comprises a cutoff voltage below a normal operating voltage range of the cell. The one or more deep discharge cycles may comprise a C / 10 or lower or C / 20 or lower discharge current. The one or more deep discharge cycles may include a cutoff voltage of 3.2 V or less, a cutoff voltage of 2.5 V or less, a cutoff voltage of 1.5 V or less, or a cutoff voltage of 1 V or less. The cell may be configured at a higher temperature during the one or more deep discharge cycles.

Methods for operating a flooded electrolyte battery cell used in motive service to prevent the loss of water. When charging the cell, water in the electrolyte decomposes electrolytically to oxygen and hydrogen gases. The method includes catalytically recombining the oxygen and hydrogen gases to water vapor, inhibiting venting of the oxygen and hydrogen gases and water vapor from the cell, providing fluid communication between the catalyst and the electrolyte for the oxygen and hydrogen gases and water vapor, and hygroscopically absorbing the water vapor into the electrolyte. Devices and battery cells for carrying out the method are also provided.

Provided is a battery processing method for efficiently recovering lithium from a lithium ion battery. A battery processing method for processing a lithium ion battery (1) including a positive electrode material (31) and a negative electrode material (35) includes a lithium deposition step (S2) for depositing lithium on the negative electrode material (35) by performing pulse charging on the lithium ion battery (1) while cooling, in which a charging stage (Fc) and a charging stop stage (Fs) are alternately performed during the pulse charging, and the charging stage (Fc) is performed at least multiple times, and in the charging stage (Fc), the charging stop stage (Fs) is performed at least multiple times, and in the charging stop stage (Fs), the charging stop stage (Fs) is performed at least multiple times. The lithium ion battery (1) is cooled.

Provided is a method for repairing the capacity of a waste lithium-ion battery, which belongs to the field of batteries, so as to improve the charge and discharge cycle performance of the lithium-ion battery, and reduce the use costs of the battery while reducing the pressure of the waste lithium-ion battery on environments. The method includes: first, deeply over-discharging a waste lithium-ion battery; second, discharging a free electrolyte solution and a gas in an inner cavity of the waste lithium-ion battery together with impurities in the inner cavity of the waste lithium-ion battery; then injecting a first electrolyte solution into the inner cavity of the treated waste lithium-ion battery, and allowing the battery to stand for a set time; and testing the capacity of the battery, completing the repair of the capacity of the waste lithium-ion battery if a set target value is reached, otherwise, continuing execution of the operations above. The present disclosure is simple in operation and significant in capacity recovery effect, and greatly prolongs the cycle life of a lithium-ion battery.

To provide a recycling method of a lithium ion secondary battery which does not require discharge by a resistor and can suppress generation of copper contamination in a positive electrode.SOLUTION: A method for recycling a used lithium ion secondary battery including a laminate having a positive electrode, a separator, and a negative electrode, an exterior body accommodating the laminate, and an electrolytic solution, the method comprising: a first step of exposing the laminate to a gas containing water vapor through the electrolytic solution; and a second step of converting lithium ions contained in the negative electrode into a lithium compound.SELECTED DRAWING: None

To provide a lead sulphate coating removal device which is low in power consumption and which gives no damage to an electrode of a lead storage battery.SOLUTION: A lead sulfate coating removal device which removes a lead sulfate coating generated on an electrode of the lead storage battery and which comprises: a generation unit which generates, on the basis of a signal extracted from the lead storage battery, a removal signal for the lead sulfate coating having a peak value of 550-750 mA, a pulse width of 5-100 nsec, and a frequency of 5-50 kHz; and a supply unit which supplies the removal signal generated by the generation unit to the electrode of the lead storage battery.SELECTED DRAWING: Figure 1

A purification process for recycled graphite for use as anode material in Li-ion batteries includes a sequence of leaching and heat treatment followed by washing with deionized (DI) water and an acid wash. A graphite source results from a suitable process such as acid leaching of black mass from a batteiy recycling stream, where the leach removes a substantial portion of metal salts used for cathode materials. Impurities, most notably aluminum oxide and residual cathode materials, are often present in trace amounts in the graphite source. A sequence of heating (sintering) and pH adjusted washing further purifies the graphite into a modified, recycled graphite exceeding 99.5% purity for use in a recycled battery.

A battery includes a shell having an inner cavity; a wound core assembled in the inner cavity of the shell; a column supported in the wound core, wherein the column includes a first cavity for storing a lithium-replenishing medium and a second cavity for storing a fire-fighting medium, a cavity wall of the first cavity having a first hole, and a cavity wall of the second cavity having a second hole; a first membrane configured to block the first hole, and configured to break when subjected to a first pressure, allowing the lithium-replenishing medium in the first cavity to flow into the inner cavity; and a second membrane configured to block the second hole, and configured to break when subjected to a second pressure, allowing the fire-fighting medium in the second cavity to flow into the inner cavity, the second pressure being greater than the first pressure.

The invention relates to a method for recycling a battery, having the steps of: (a) providing an at least partially discharged battery, (b) comminuting the at least partially discharged battery in a process chamber (11) in order to obtain battery parts, (c) drying the battery parts in a process chamber (11) in order to obtain dried battery parts and a separated gas, and (d) packing the dried battery parts in order to form a package. The invention is characterized in that steps (b) and (c) are carried out in the same process chamber (11). The invention additionally relates to a mobile device for recycling a battery using the method and to a package in which 1 to 30 kg of battery parts are contained and which can be obtained using the method.

A method for filling oxygen into a NiMH battery module (1) comprising one battery cell (2), the battery module having a casing (4) encompassing the battery cell and a gas space, wherein each battery cell (2) comprises a first electrode, a second electrode, a porous separator, and an aqueous alkaline electrolyte arranged between the first electrode and the second electrode, wherein the casing (4) f comprises an inlet (25) for adding oxygen to the gas space of the battery cell (2). The method comprises monitoring (S72) battery module temperature and initiating filling of oxygen at an initial flow rate; and regulating the oxygen filling flow rate based on the monitored battery module temperature to avoid exceeding an upper temperature limit.

A charge cathode assembly includes: an electrically conductive plate having a first and second plurality of apertures therein, the second plurality of apertures being through- apertures; a plurality of pellets of a cathode material that is not weldable to the electrically conductive plate, the plurality of pellets embedded in the first plurality of apertures so that a portion of each pellet protrudes from the apertures; and, a non-conductive coating on exterior surfaces of the electrically conductive plate, the non-conductive coating filling spaces between the protruding portions of the plurality of pellets so that end faces of the protruding portions are not coated with the non-conductive coating, the non-conductive coating engaging itself through the second plurality of apertures for securing the non- conductive coating to the electrically conductive plate.

The application discloses a copper plating wastewater treatment system, which comprises a thermal regeneration cell stack, a gas-liquid separator, an electric coagulation device and a biological degradation device. 2+ The gas-liquid separation is carried out to obtain NH3 and Cu 2+ The low-concentration Cu-containing wastewater obtained through the thermal regeneration cell stack is further treated by the electric coagulation device to reduce the Cu content in the wastewater 2+ The biological degradation device is used for biodegrading the Cu-containing wastewater obtained through the electric coagulation device; and the application further discloses a treatment method for treating copper plating wastewater by using the copper plating wastewater treatment system. Compared with the prior art, the system can realize copper ion recovery and reactant regeneration, save production raw materials, utilize low-grade heat energy, save reagents and equipment required by the complex breaking reaction, save resources and reduce thermal pollution.

In the present disclosure, a method, an apparatus, and a system for collecting carbon using a fuel cell principle are disclosed. More specifically, the carbon capture device may comprise an air cartridge in which a gas including a carbon component is introduced; a fuel cartridge in which a fuel is injected; a fuel cell stack; a fuel supply line for supplying the fuel between the fuel cartridge and the fuel cell stack; and a controller, wherein the fuel cell stack may include: an anode unit including a fuel electrode for performing an oxidation reaction of the fuel supplied from the fuel supply line; a cathode unit including an air electrode for performing a reduction reaction of the gas introduced from the air cartridge; and an electrolyte unit including an electrolyte for transferring metal ions generated by the oxidation reaction of the fuel between the anode unit and the cathode unit. Various embodiments for collecting carbon and generating energy are disclosed.

This invention discloses a UPS power supply battery repair and maintenance device and intelligent logic control method. The device includes a data processing module, at least one battery desulfurization module, a local display panel, and a backend server. The data processing module includes a central processing unit, a battery pack acquisition circuit, an intelligent electric switch assembly, a charging and discharging circuit, an uplink communication circuit, and a downlink communication circuit. The battery pack acquisition circuit collects relevant data from the battery pack. The intelligent electric switch assembly controls the battery pack to connect to or disconnect from the DC bus for charging and discharging. The charging and discharging circuit charges and discharges the connected battery pack. The central processing unit aggregates, analyzes, uploads, receives instructions, and controls the battery desulfurization module and the intelligent electric switch assembly. The uplink communication circuit communicates with the local display panel and the backend server, and the downlink communication circuit communicates with the battery desulfurization module. This invention enables intelligent logic control for battery repair and maintenance.

According to one aspect, a system for electrochemical power storage may include at least one instance of a battery module, each instance of the battery module including a battery enclosure and a metal-air battery, the metal-air battery disposed in the battery enclosure; a reservoir including a volume of a liquid electrolyte; a supply conduit in fluid communication between the reservoir and the battery enclosure; a pump actuatable to move the liquid electrolyte from the reservoir into the battery enclosure via the supply conduit; and a return conduit in fluid communication between the battery enclosure and the reservoir, the liquid electrolyte movable from the battery enclosure to the reservoir, via the return conduit, with the metal-air battery immersed in the liquid electrolyte in the battery enclosure.

An aspect of the present invention is an energy storage device including: an electrode assembly obtained by winding a band-shaped positive electrode including a positive active material layer, a band-shaped negative electrode including a negative active material layer, and a band-shaped separator in the longitudinal direction; an electrolyte solution; and a case that houses the electrode assembly and the electrolyte solution, where at least one of the positive active material layer and the negative active material layer contains a hollow active material particle, the winding axis of the electrode assembly is located parallel to the horizontal direction, at least a central part of the electrode assembly is pressed with the case pressed, an excess electrolyte solution that is a part of the electrolyte solution is present between the electrode assembly and the case, the lower end of the electrode assembly has contact with the excess electrolyte solution, and the relationship between the height H from the liquid level of the excess electrolyte solution to the upper end of the electrode assembly and the width Wc of the positive active material layer satisfies the following formula 1:0.8H≤Wc≤2.0H  1

The application provides a battery electrolyte impurity treatment system and method, and belongs to the technical field of batteries, comprising a recovery tank, a filtering mechanism, a temperature control system and an electrophoresis mechanism. The upper part of the side wall of the recovery tank is provided with a liquid inlet pipe, the bottom of the recovery tank is provided with a sedimentation tank, and the sedimentation tank is provided with a discharge pipe. The filtering mechanism comprises a filter box and a filter layer, the filter box is connected with the liquid inlet pipe, and the filter layer is arranged in the filter box. The temperature control system is arranged in the recovery tank and is used for improving the temperature of the electrolyte in the recovery tank. The electrophoresis mechanism comprises a positive electrode row and a negative electrode row, the positive electrode row and the negative electrode row are arranged at the top of the recovery tank, and the positive electrode row and the negative electrode row are connected with the power supply through power supply lines. The battery electrolyte impurity treatment system provided by the application can remove large-particle suspended matter, non-dissolved substances and metal ion impurities in the electrolyte, can improve the solubility of the organic matter in the negative electrode additive and the separator in the electrolyte, and can ensure the performance index of the battery.

The invention relates to the field of secondary batteries, and provides a capacity repairing agent, a secondary battery, a capacity repairing method of the secondary battery and electric equipment, which are beneficial to repairing the attenuated capacity of the secondary battery. The capacity repairing agent is used for repairing the capacity of an attenuated secondary battery to be repaired and comprises a chemical active material meeting an alpha-beta... gamma structure, an alpha group and a beta group are connected in a covalent bond mode, the beta group and a gamma group are connected in a covalent bond or ionic bond mode, and the beta group is used for providing a site for electrochemical reaction; the alpha group is selected from-CN,-CnH2n + 1 and-Cn + 1F3H2n, or one of the group; a beta group is selected from one of-CO2 <->,-SO2 <-> and-NO2 <->; and a gamma group is selected from one of-CN,-CnH2n + 1,-CnF2n + 1,-Cn + 1F3H2n, Li < + >, Zn < 2 + >, [Cxmim] < + >, N-alkyl pyridine, tetraalkyl ammonium and tetraalkyl phosphonium.

Metal-air cells, battery stacks, battery system and methods of forming the anodes within the metalair cells without dismantling the cell are provided. The anodes include metal mesh(es) as current collector(s) and concentrated slurry comprising metal granules suspended in electrolyte, in electrical contact with the current collector(s). The concentration of the slurry is carried out by circulating it through a cell space between cathode(s) and the metal mesh(es), which are configured to increase the concentration of the metal granules accumulating thereupon. The rise in required circulation pressure (or the corresponding time period and / or changes in conductivity related thereto) is used to indicate the completion of the anode formation process. One- and two-dimensional implementations of cells are provided, and discharging efficiency may be enhanced by circulating the electrolyte during discharging.

To provide a manufacturing method for a regenerated positive electrode capable of recovering resistance increase due to reduced adhesion of positive electrode active material particles, etc., and recovering capacity reduction due to lithium depletion in a positive electrode.SOLUTION: A manufacturing method for a regenerated positive electrode in a used lithium-ion secondary battery including a laminate having a positive electrode, either a separator or a solid electrolyte layer, and a negative electrode, includes extracting the positive electrode from the laminate, pressing the extracted positive electrode, and doping lithium ions into the pressed positive electrode. The doping of lithium ions is performed by discharging in an electrolyte solution using a lithium electrode as a counter electrode.SELECTED DRAWING: Figure 3

The application discloses a performance repairing method of a lithium ion battery, the lithium ion battery and an electric equipment. The performance repairing method comprises the following steps: (1) screening the retired batteries to screen the repairable retired batteries; (2) performing specific discharge treatment on the repairable retired batteries; (3) performing exhaust on the retired batteries, and adding a functional additive liquid, wherein the functional additive liquid comprises acid; (4) charging the retired batteries; (5) discharging at least part of electrolyte and waste gas in the retired batteries; (6) adding a functional repairing electrolyte into the retired batteries; and (7) aging and forming. According to the method, the metal impurities deposited on the electrode surface are removed, and the SEI film is repaired, so that the capacity expression and stability of the retired batteries are greatly improved, the impedance of the retired batteries is reduced, and the safety performance and cycle life performance of the retired batteries are improved.

This invention provides a battery processing method and a battery processing system that can efficiently recover lithium from lithium-ion batteries. [Solution] A battery processing method for processing a lithium-ion battery comprising a positive electrode material and a negative electrode material, wherein the positive electrode material and the negative electrode material are stacked in a stacking direction, and gas is present inside, the method comprising: a gas extrusion step of pushing the gas toward the peripheral edge of the lithium-ion battery in a plane perpendicular to the stacking direction; and a cooling and charging step of charging the lithium-ion battery while cooling it to deposit lithium on the negative electrode material.