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1110
results.
Updated on
01/09/2024 [07:42:00]
Results 25 to 50 of 1110
Absstract of: US2024291304A1
A battery charging system can include a first charger module having a first AC side couplable to an AC source and a first DC side couplable to a battery and first control circuitry that operates the first charger to charge or discharge the battery; and a second charger module having a second AC side couplable to the AC source and a second DC side couplable to the battery and second control circuitry that operates the second charger to generate heat, wherein: if the first charger module is charging the battery from the AC source, the second control circuitry operates the second charger to generate heat without delivering charging current to the battery; and if the second charger is discharging the battery to the AC source, the second control circuitry operates the second charger to generate heat without delivering current to the AC source.
Absstract of: US2024291291A1
An active balancer achieving reductions in size and price. The active balancer according to the present technology may equalize the voltages of a plurality of cells. The active balancer may be provided with a capacitor and an inductance arranged between the cells. The active balancer may be further provided with: a plurality of switching elements Q1, Q2, Q3, Q4 for switching connection states between the plurality of cells, and detection circuits M1, M2, M3, M4 for detecting the voltages of the switching elements Q1, Q2, Q3, Q4. The detection circuits M1, M2, M3, M4 may detect voltage resonance and current resonance of the switching elements Q1, Q2, Q3, Q4.
Absstract of: US2024291294A1
A battery system includes: a charging circuit comprising a bidirectional charger and a main processor; and a plurality of battery packs, wherein each of the plurality of battery packs comprises a battery cell and a battery processor, wherein the main processor is configured to transmit, by using the bidirectional charger, to the battery processor of each of the plurality of battery packs, a charging signal to charge the battery cell of each of the plurality of battery packs, wherein the battery processor is configured to: based on receiving the charging signal, sequentially perform constant current (CC) charging of each of the plurality of battery packs according to a predefined order, and based on the CC charging of the plurality of battery packs being completed, simultaneously perform constant voltage (CV) charging of each of the plurality of battery packs.
Absstract of: US2024291112A1
A rechargeable battery module includes: a plurality of battery cells; a lower case accommodating lower ends of the battery cells; a holder case coupled to the lower case and accommodating the battery cells; a plurality of bus bars on the holder case; a plurality of bonding wires connecting the battery cells to the bus bars; and an upper case covering the bus bars and the bonding wires and coupled to the holder case.
Absstract of: WO2024174817A1
Provided in the present application are an energy storage system and a control method thereof. The energy storage system comprises a plurality of battery packs which are connected in parallel and a controller, each battery pack among the plurality of battery packs comprising at least one battery module, and each battery module comprising a battery cell unit and a DC/DC conversion circuit. The plurality of battery packs comprise a first battery pack and a second battery pack. Thus, the controller can control the DC/DC conversion circuits of the battery modules in the first battery pack to separately charge the battery cell units of the battery modules in the first battery pack to a first battery level, and then control the DC/DC conversion circuits of the battery modules in the second battery pack to separately charge the battery cell units of the battery modules in the second battery pack to the first battery level. Implementing the embodiments of the present application can achieve charging the battery modules by groups in turn, so that the battery modules can be fully charged stepwise and successively, thereby prolonging the service life of the battery modules, increasing the power backup time of the energy storage system, and achieving strong system stability.
Absstract of: WO2024174807A1
A lithium supplementing material and a preparation method therefor, a positive electrode sheet, and a secondary battery. The lithium supplementing material comprises a core (10) and catalytic grains (20), and the core (10) is composed of a lithium-rich compound; at least some of the catalytic grains (20) are in bond contact with the core (10). The catalytic grains (20) can increase the number of gain boundaries of the lithium-rich compound, thereby facilitating improvement of a lithium ion transfer rate of the lithium-rich compound, and the catalytic grains (20) can also catalyze decomposition of the lithium-rich compound at a lower potential to generate lithium ions, thereby reducing a decomposition voltage of the lithium ions in the lithium supplementing material; meanwhile, the lower decomposition voltage can reduce release of oxygen from the core, thereby avoiding occurrence of an oxygen reduction reaction between highly active atomic oxygen and an electrolyte to generate gases such as CO and CO2.
Absstract of: WO2024174820A1
The present application relates to the field of energy storage devices, and discloses a battery, comprising battery cells, first heat exchange plates, and insulating and heat conducting layers, wherein each battery cell is provided with a pole, and the pole is provided with a heat exchange surface; each insulating and heat conducting layer is arranged between the heat exchange surface and a corresponding first heat exchange plate; the insulating and heat conducting layer is provided with a first side surface and a second side surface that are opposite to each other, the first side surface is attached to the first heat exchange plate, and the second side surface is used for being attached to the heat exchange surface or being attached to a metal piece connected to the pole. The present application effectively improves the heat dissipation effect of the battery.
Absstract of: WO2024174286A1
The present invention relates to the technical field of sodium ion batteries. Provided in the present invention are a carbon-hard carbon composite material, a preparation method therefor and a use thereof. The carbon-hard carbon composite material is prepared from the following raw materials in parts by mass: 80-120 parts of a porous carbon powder and 1-10 parts of a carbon material. According to the present invention, a carbon material containing N, S or P is pyrolyzed and coated on the surface of porous nano carbon to fill a carbon nanotube channel, and a rod-shaped SEI film is formed in an inner layer channel, so that the problem of sodium dendrites produced by excessive "active" sodium consumption caused by an unstable SEI film may be effectively prevented, and the overall utilization rate of the material is improved. Meanwhile, defects on the surface of the porous carbon may be modified, the contact area between an electrode and an electrolyte is reduced, the interfacial impedance is reduced, and the problem of excessive decomposition of the electrolyte is notably solved, which is beneficial to sodium ions being transmitted into the material from the electrolyte. The present invention effectively improves the first-cycle coulombic efficiency and the cycle stability, and presents a significant prospect in the commercial application of sodium-ion batteries.
Absstract of: WO2024174170A1
The present application provides a separator for a secondary battery, a secondary battery, and an electric device. The separator for a secondary battery comprises a base membrane and a coating located on at least one surface of the base membrane; the coating comprises inorganic particles; on the basis of the total number of inorganic particles in the coating, the number of inorganic particles having a particle size of 2 nm to 50 nm is not less than 50%; and the inorganic particles comprise ion conductors. The separator can improve the cycle performance and high-temperature storage performance of the secondary battery, and improve the electrochemical performance of the secondary battery.
Absstract of: WO2024174169A1
The present application provides a silicon-based negative electrode active material. The silicon-based negative electrode active material comprises a silicate containing an alkaline earth metal element, and also contains a K element and an Mn element.
Absstract of: WO2024174221A1
Provided in the present application are a lithium secondary battery and an electric device. The lithium secondary battery comprises: a positive electrode sheet, which comprises a positive current collector and a positive electrode active material layer arranged on at least one side of the positive current collector, wherein the diffusion coefficient of lithium ions in the positive electrode active material layer is Ds; and an electrolyte, which comprises a solvent, wherein the solvent comprises at least one of compounds of formula (I) below, the mass fraction of the compound of formula (I) in the solvent is W1, and the mass fraction W1 of the compound of formula (I) and the diffusion coefficient Ds of lithium ions in the positive electrode active material layer satisfy: 2×10-18cm2/s≤W1×Ds≤8×10-6cm2/s, optionally 3×10-14cm2/s≤W1×Ds≤7×10-10cm2/s, where R1 and R2 respectively and independently comprise at least one of an alkyl group having 1-3 carbon atoms and a haloalkyl group having 1-3 carbon atoms. In the lithium secondary battery, by regulating and controlling the diffusion coefficient Ds of lithium ions in the positive electrode material and the amount of the compound of formula (I), the transmission rate of lithium ions in the electrolyte can be effectively increased, and the energy density and fast charging performance of the lithium secondary battery are improved.
Absstract of: WO2024174452A1
A solid electrolyte material, a preparation method, an electrode comprising the solid electrolyte material, and a lithium ion battery. The solid electrolyte material comprises a halide solid electrolyte, and the chemical general formula of the halide solid electrolyte is: Li2+a+2bZr1-a-bMaNbX6, wherein the element M is selected from one or two of Eu and Gd; the value range of 2+a+2b is 2.15-2.65; the element N is different from M, and the ionic radius r(N) of the element N is 60 pm < r(N) < 95 pm; the value range of a+b is 0.1-0.5, and the value range of a/b is 1-6; X is at least one of F, Cl, Br, and I. Compared with a standard structure of Li2ZrCl6, Zr is used as a main element, and elements M and N of proper types are doped; and on the premise of low cost, the ionic conductivity of the halide solid electrolyte is improved by increasing the proportion of a lithium element and on the basis of the synergistic effect of the element M and the element N.
Absstract of: WO2024174450A1
Disclosed in the present invention is a composite metal foil, comprising a support body and a conductive layer, wherein the conductive layer is arranged on at least one face of the support body; the elongation of the composite metal foil is greater than or equal to 2%; and the peeling force between the conductive layer and the support body is greater than or equal to 0.3 N/cm. Further disclosed in the present invention are an electrode material of a battery using the composite metal foil, and a battery. By using the technical means of the present invention, the structure of the metal foil is improved, such that the problem of the peeling force and the elongation of the composite metal foil being relatively low can be effectively solved, thereby effectively improving the quality of the metal foil, and improving the performance effect of the battery using the metal foil.
Absstract of: WO2024174294A1
Disclosed are a preparation method for a silicon-carbon composite material and a silicon-carbon composite material. The method comprises preparing a porous carbon-doped porous copper complex, then depositing nano silicon on the porous carbon-doped porous copper complex by adopting a silane cracking method, and obtaining a silicon-carbon composite material. The steps for preparing a porous carbon-doped porous copper complex at least comprise: S11) uniformly mixing carbon disulfide, activated carbon, and an adhesive, and pressing the mixture into a copper foam to form a sheet-shaped structure; S12) transferring the sheet-shaped structure obtained in step S11) into a carbonization device, and heating and carbonizing in an inert atmosphere to obtain a porous carbon-doped porous copper complex. The present invention significantly addresses the problem where, when using only porous carbon as a substrate for depositing nano silicon, the nano silicon cannot be completely deposited within the porous carbon, leading to exposed nano silicon, which affects the expansion and high-temperature storage performance thereof. Meanwhile, the present invention also overcomes the notable deficiencies of using only porous metal for nano silicon deposition, such as poor consistency and low efficiency.
Absstract of: US2024287645A1
A recycling process for Lithium-ion (Li-ion) batteries includes a selective leach of charge material metals followed by impurity control for effecting microstructures such as a pore volume and surface area for optimal structures and charge performance. Particle characteristics having a favorable effect on performance correlate with soluble impurities in a recycling leach solution formed from spent charge material in a battery recycling stream. Spent batteries yield a black mass of agitated, comingled cathode material, anode material and current collectors. Leaching of the black mass yields a recycling solution of charge material metals and impurities. Selective adjustment of these impurities through adding and/or separating soluble ions in the solution drives formation of internal voids, surface area and pore volume in the resulting cathode material.
Absstract of: US2024287646A1
A method of recycling Ni and/or Co from a functional material such as a battery or catalyst material, the method comprising: forming an acidic aqueous recycling feed of the functional material by acid leaching the functional material or a derivative thereof, the acidic aqueous recycling feed comprising Ni and/or Co in solution; contacting the acidic aqueous recycling feed with an organic solvent extraction composition; and extracting one or both of Ni and Co from the acidic aqueous recycling feed into the organic solvent extraction composition, wherein the organic solvent extraction composition comprises: an organic solvent which is immiscible with the acidic aqueous recycling feed; a picolinic acid ester or picolinic acid amide which is soluble in the organic solvent; and a phase transfer catalyst.
Absstract of: US2024287371A1
A heat transfer fluid for immersion cooling of electrical componentry includes a mixture of certain trialkyl phosphate esters and triaryl phosphate esters. Also disclosed is an immersion cooling system employing the heat transfer fluid and a method of cooling electrical componentry using the immersion cooling system. The mixture of phosphate esters of the present disclosure exhibits favorable properties in a circulating immersion cooling system, such as low flammability, low pour point, high electrical resistivity and low viscosity for pumpability.
Absstract of: US2024287326A1
Disclosed herein is a method of discharging a battery by providing a composition having a solution of a crosslinked or crosslinkable polymer and a solvent and conductive carbon particles; and applying the composition to a battery in contact with an anode and a cathode to form an electrical connection from the anode to the cathode.
Absstract of: US2024287226A1
The present disclosure relates to a hydrophilic polymer and a method for preparing the same. The hydrophilic polymer is characterized in that it is a copolymer of a conjugated diene, a monoolefin and a hydrophilic monomer represented by Formula I. In the Formula I, X1, X2 and X3 are each independently selected from hydrogen atoms, or a linear or branched alkyl with 1-4 carbon atoms. At least one of R1, R2 and R3 is hydrophilic group; and the others are each independently selected from hydrogen atoms or, an alkyl or alkoxy with 1-4 carbon atoms.
Absstract of: WO2024177130A1
Provided are a secondary-battery-unit charging state estimation device, a secondary-battery-unit charging state estimation method, and a secondary-battery-unit charging state estimation program with which it is possible to estimate, in real-time with good followability, the state of charge (SOC) of a secondary battery on the basis of parameters at the time of measurements. The present invention provides a secondary-battery-unit charging state estimation device that estimates, by employing formula 1 or 2, the state of charge (SOC) or the state of power (SOP) of a secondary battery unit that has at least one battery cell, wherein the secondary-battery-unit charging state estimation device is equipped with a corrected full-charge-capacity calculation means for calculating a corrected full charge capacity (FCCadj) of the secondary battery unit, and the corrected full-charge-capacity calculation means calculates a corrected full charge capacity (FCCadj) by employing a Weibull function that employs, as the variables, indices that are based on physical quantities at the time of measurements, obtained from the secondary battery unit.
Absstract of: WO2024177055A1
The present invention recovers electric power from a noise component that is generated by electrostatic induction. Disclosed is a power storage device which comprises: a first metal element that is electrically floated from the ground; a second metal element that is capacitively coupled to the first metal element and generates a charge imbalance in the first metal element; and a power storage unit which is connected to the first metal element and the second metal element so as to store the potential difference generated between the first metal element and the second metal element.
Absstract of: WO2024177682A1
Systems and methods are provided for charging a chargeable electronic device with a USB interface. An example method includes comparing a charging voltage level of a charging device to a charge voltage rage. The method may further include charging a battery with a charging current based on the charging voltage level being within the charging voltage range. The method may further include comparing the charging current to a charge current range, and increasing the charging current based on a determination that it is within the charge current range. The method may involve again comparing the charging voltage level to the charge voltage range and the charging current to the charge current range, and continuing to charge the chargeable electronic device with the charging current based on a determination that the charging voltage level is within the charge voltage range and the charging current is within the charge current range.
Absstract of: WO2024177632A1
A recycling process for Lithium-ion (Li-ion) batteries includes a selective leach of charge material metals followed by impurity control for effecting microstructures such as a pore volume and surface area for optimal structures and charge performance. Particle characteristics having a favorable effect on performance correlate with soluble impurities in a recycling leach solution formed from spent charge material in a battery recycling stream. Spent batteries yield a black mass of agitated, comingled cathode material, anode material and current collectors. Leaching of the black mass yields a recycling solution of charge material metals and impurities. Selective adjustment of these impurities through adding and/or separating soluble ions in the solution drives formation of internal voids, surface area and pore volume in the resulting cathode material.
Absstract of: WO2024177583A1
The invention is related with a magnesium battery where boron compound is used in soldi phase electrolyte.
Nº publicación: WO2024174400A1 29/08/2024
Applicant:
YANTAI TAYHO ADVANCED MATERIALS RES INSTITUTE CO LTD [CN]
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Absstract of: WO2024174400A1
The present invention relates to the technical field of lithium battery materials. Disclosed are a meta-aramid polymer having a grid structure, a preparation method therefor, and a use thereof. According to the present invention, in the process of forming the meta-aramid polymer, alkyl is introduced between macromolecules by means of an alkylation reaction, so that adjacent molecular chains are connected in a chemical bond mode to form a grid structure. The meta-aramid polymer having a grid structure is mixed with a pore-forming agent and a cosolvent to prepare a coating slurry which is then coated on the surface of a polyolefin porous diaphragm to obtain a high-performance lithium battery coating diaphragm. Compared with a coating diaphragm prepared by a traditional method, the diaphragm in the present invention exhibits higher heat resistance, heat resistance shrinkage rate and puncture strength, and has better wettability with an electrolyte, thereby prolonging the cycle life of the battery. The meta-aramid coating diaphragm having a grid structure may also improve the oxidation resistance of the diaphragm, which is conducive to achieving high potential and improving energy density.
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