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1376
results.
Updated on
03/05/2025 [07:30:00]
Results 300 to 325 of 1376
Absstract of: WO2025086427A1
The present invention provides an electrolyte, a lithium ion battery, and an electric device. The electrolyte comprises a solvent, a lithium salt, and an additive, wherein the solvent comprises a fluoroether, a carbonate ester compound, and a carboxylate ester compound, and the mass ratio of the fluoroether, the carbonate ester compound, and the carboxylate ester compound is (10-20):(40-65):(20-45); the additive comprises a first additive, and the first additive is a tetranitrile compound as shown in formula I. Compared with the prior art, in the electrolyte of the present invention, the fluoroether is added in the solvent, so that an SEI membrane having better toughness can be formed on one side of a metal lithium negative electrode, thereby improving the stability of a metal lithium negative electrode interface; in addition, the tetranitrile compound is further added as the additive, thereby effectively improving the stability of a positive electrode, and achieving a synergistic effect with the fluoroether to effectively balance the transport rate of lithium ions, effectively mitigate the problem of lithium dendrites prone to occurring in a metal lithium negative electrode system, and thus improve the cycle life and the safety performance of a battery.
Absstract of: WO2025086458A1
The embodiments of the present disclosure belong to the technical field of batteries. Provided are an explosion-proof valve patch, a cover plate assembly, a battery cell, a battery and an electric device. The explosion-proof valve patch comprises a patch body; a first rubber ring arranged on a first surface of the patch body and provided with a first gap; and a second rubber ring arranged on the first surface of the patch body, located on the inner side of the first rubber ring and provided with a second gap, the first gap and the second gap being staggered.
Absstract of: WO2025086452A1
The present application pertains to the technical field of batteries, and provides a battery cell, a battery, and an electrical device. The battery cell comprises a positive electrode sheet, a negative electrode sheet, and a separator film. The positive electrode sheet comprises a positive electrode active material area, the negative electrode sheet comprises a negative electrode active material area, the negative electrode sheet and the positive electrode sheet are stacked in a first direction, and the separator film is located between any adjacent positive electrode sheet and negative electrode sheet. The projection of the negative electrode sheet on a first plane perpendicular to the first direction completely falls within the range of the projection of the positive electrode sheet on the first plane, and the projection of the positive electrode active material area on the first plane falls with the range of the projection of the negative electrode active material area on the first plane.
Absstract of: US2025138096A1
A battery detection circuit and a battery detection method are provided. The battery detection circuit includes battery gauge circuits and a processing circuit. The battery gauge circuits read battery information of batteries, and the battery information at least includes a current battery capacity, a current temperature and a current cell voltage. The processing circuit receives and processes the battery information, and performs: determining whether a battery temperature of any one of the batteries is greater than a designated temperature; if negative, determining whether the current cell voltage of any one of the batteries is lower than a designated voltage, and if affirmative, adjusting the corresponding current battery capacity to generate a reported battery capacity.
Absstract of: US2025138091A1
A method of calculating a state of charge of a battery, includes: calculating, by at least one processor, a state of charge (SOC) of a battery; obtaining, by the at least one processor, a temperature of the battery; calculating, by the at least one processor, based on the obtained temperature, a plurality of temperatures associated with a plurality of SOCs of the battery that are gradually downgraded from the calculated SOC of the battery by a grade; determining, by the at least one processor, based on the calculated plurality of temperatures, a specific SOC associated with a discharge end point of the battery; and determining, by the at least one processor, based on the determined specific SOC, a change trend of the SOC of the battery.
Absstract of: US2025138681A1
An electronic device having a novel structure is provided. A battery is provided in each component of an electronic device, whereby the electronic device includes two batteries. The electronic device including the two batteries and a display portion that can be called a flexible display and has a plurality of foldable portions is provided as a novel device.
Absstract of: US2025137870A1
A hold-down mechanism includes a bearing member, at least two hold-down structures arranged on the bearing member, and a locking structure. The hold-down structures are configured to be movable on the bearing member. During testing, each of the hold-down structures is pressed against a unit under test. If the unit under test has an irregular or uneven surface, a distance D between each hold-down face and the bearing member is changed by moving each of the hold-down structures, such that each hold-down face can abut on the surface of the unit under test. Once in abutting, each of the hold-down structures is locked by the locking structure, such that a curved surface formed by joining the various hold-down faces well fits the surface of the unit under test, achieving effective profiling and ensuring that the entire surface of the unit under test is effectively held down.
Absstract of: US2025137852A1
A temperature sensor comprising a housing that receives a temperature measuring element is provided. The housing includes a polymer composition comprising a polymer matrix that includes a thermotropic liquid crystalline polymer. The polymer composition exhibits a melt viscosity of about 150 Pa−s or less and a deflection temperature under load of about 170° C. or more.
Absstract of: US2025140837A1
The present invention relates to a positive electrode active material and a lithium secondary battery including the same, and more particularly, to a positive electrode active material including an overlithiated lithium manganese-based oxide, which can be synthesized at a lower temperature than that in a conventional synthesis process, and compensate for phase development and lithium ion conductivity, which are insufficient when synthesized at low temperatures, and a lithium secondary battery including the same.
Absstract of: US2025140830A1
An electrochemical device includes a positive electrode plate, a negative electrode plate, and an electrolyte. The negative electrode plate includes a negative electrode active layer, the positive electrode plate includes a positive electrode active layer, the positive electrode active layer includes a positive electrode active material, the positive electrode active layer includes element aluminum, an amount A (mmol) of the element aluminum in the positive electrode active layer and a total area B (m2) of the negative electrode active layer satisfy 3≤A/B≤25, and the positive electrode active material includes lithium manganese oxide and a manganese-containing compound.
Absstract of: US2025140842A1
A positive electrode for an all-solid-state battery includes a current collector, and a positive electrode active material layer on the current collector, the positive electrode active material layer including a positive electrode active material; a sulfide solid electrolyte; a dispersion medium including a compound of CH3C(═O)O—R1, where R1 is a C7 to C9 alkyl group; a binder; an electrolyte salt; one or more of a monofunctional or higher (meth)acrylate having an alkylene glycol group, an oligomer thereof; and a cross-linked product thereof, and a conductive material.
Absstract of: US2025140824A1
A cathode active material for lithium secondary batteries having a multiphase structure and a manufacturing method thereof are disclosed. The cathode active material includes a lithium oxide according to the chemical formula Li1+xMn2O4 and having a multiphase structure including at least a cation-disordered rock salt (DRX) structure. In the formula, x satisfies the relationship 0≤x≤0.75.
Absstract of: US2025140829A1
A process of preparing a Li1+xMn2O4 product (wherein. 0
Absstract of: WO2025087034A1
A current collecting component (3), a thermal management assembly (30), a battery (100), and an electric device. The current collecting component (3) comprises a device body (31); the device body (31) is provided with a main inlet (311), a main outlet (312), a plurality of sub-inlets (313), and a plurality of sub-outlets (314); the plurality of sub-outlets (314) are communicated with the main outlet (312); an extension flow channel (315) is formed inside the device body (31); one end of the extension flow channel (315) is communicated with the main inlet (311), and the other end of the extension flow channel (315) extends away from the main inlet (311); one of the plurality of sub-inlets (313) is communicated with the main inlet (311), and the remaining sub-inlets (313) are communicated with the extension flow channel (315); the quantity of the sub-inlets (313) is equal to that of the sub-outlets (314), and the sub-inlets (313) are in one-to-one correspondence to the sub-outlets (314); and the sub-inlets (313) are respectively adjacent to the corresponding sub-outlets (314).
Absstract of: WO2025087000A1
Provided are an electrolyte, a battery, and an electric device. The electrolyte comprises a redox couple, the redox couple only has one oxidation potential, and the oxidation potential of the redox couple is 3.4-4.2 V.
Absstract of: WO2025086994A1
A battery pack, comprising a battery module (20) and a heat exchange member (10). The battery module (20) comprises at least one row of battery groups; the heat exchange member (10) comprises a heat exchange main body (100), and a plurality of protective protrusions (130) which are spaced apart from one another and are all connected to the heat exchange main body (100); the heat exchange member (10) is attached to one surface of the battery module (20); and all the protective protrusions (130) extend away from the battery module (20). The structural form of the protective protrusions (130) achieves a relatively light weight and relatively low costs, so that the energy consumption of an electric vehicle is relatively low, and the endurance of the electric vehicle is ensured.
Absstract of: WO2025087414A1
A single-crystal positive electrode material and a preparation method therefor, and a lithium ion battery. The single-crystal positive electrode material is a particulate matter, and the particulate matter comprises an inner-layer material and a cladding layer covering the surface of the inner-layer material, wherein the particulate matter comprises a first particle having an average particle size F1 of 1.0-2.0 μm and a second particle having an average particle size F2 of 2.5-6.0 μm, and the average thickness T1 of a cladding layer of the first particle is smaller than the average thickness T2 of a cladding layer of the second particle; the cladding layer comprises a fast ion conductor; the molecular formula of the inner-layer material is: Li1+aNixCoyMzQbO2±cAd, wherein 0≤a<0.20, 0.60≤x<1.0, 0
Absstract of: WO2025086390A1
Disclosed is a preparation method for a lithium metal electrode. The preparation method comprises the following steps: step S1, preliminary work; step S2, forming an alloy liquid; step S3, coating the alloy liquid; and step S4, monitoring and feeding back the coating result. The lithium metal electrode is formed by coating the alloy liquid containing lithium metal on a conductive substrate, and the thickness of the lithium metal electrode can be adjusted by adjusting the coating thickness of the alloy liquid, so as to improve the simplicity of the thickness adjustment of the lithium metal electrode, and the consistency of the coating thickness of the alloy liquid is convenient to control; in addition, the lithium metal and an auxiliary metal are mixed to form the alloy liquid, such that the affinity with the conductive substrate can be enhanced, thereby improving the stability of connection between the alloy liquid and the conductive substrate, and by monitoring the actual coating thickness of the alloy liquid, and adjusting the coating speed according to the coating thickness, the technical effect of improving the coating thickness accuracy can be achieved.
Absstract of: WO2025086213A1
A modified lithium iron phosphate, a preparation method therefor and a use thereof. The preparation method comprises the following steps: (1) mixing a zirconium salt, a tungstate and a solvent, to obtain a mixed salt solution, adjusting the pH, then adding lithium iron phosphate and performing a heating reaction; (2) separating a slurry obtained by the heating reaction into a solid and a liquid, and subjecting the obtained solid to a one-step sintering treatment, to obtain a first sintered material; (3) mixing an organic carbon source, a lithium source and the first sintered material, and performing a second sintering treatment, to obtain a modified lithium iron phosphate. A material having a negative thermal expansion effect is used as a coating layer, which is then coated with an electrically conductive material, causing pores to appear during a second coating process due to the negative thermal expansion effect, which is conducive to the embedding of organic matter and improves bonding tightness between the two layers of coatings. The pores generated during the negative thermal expansion process are conducive to the entry of lithium ions, which can better generate lithium tungstate and lithium zirconate from the tungsten oxide and zirconium oxide generated by decomposition.
Absstract of: WO2025086389A1
A method for preparing a lithium metal electrode, comprising: step S1, preparing molten lithium; step S2, adding auxiliary metal to the molten lithium, and mixing and stirring to form an alloy liquid; step S3, cooling the alloy liquid to a target temperature, and heating a conductive substrate to a preset temperature, such that the temperature difference between the target temperature and the preset temperature is within a preset range; and step S4, coating the conductive substrate with the alloy liquid to obtain a lithium metal electrode. The lithium metal electrode is formed by coating the conductive substrate with the alloy liquid containing lithium metal, and the thickness of the lithium metal electrode can be adjusted by adjusting the coating thickness of the alloy liquid, thereby improving the flexibility and convenience of thickness adjustment of a lithium battery. Additionally, the lithium metal and the auxiliary metal are mixed to form the alloy liquid, so that the affinity with the conductive substrate can be enhanced, and thus the technical effect of improving the stability of connection between the alloy liquid and the conductive substrate is achieved.
Absstract of: US2025138101A1
A battery pack includes: an assembled battery in which power storage devices are connected; a current application line for applying current to the assembled battery; voltage detection lines for detecting voltages of the power storage devices; and a battery monitoring device that measures internal impedances of the power storage devices via the current application line and the voltage detection lines. Each of the power storage devices includes an electrode assembly in which a positive electrode plate and a negative electrode plate are alternately stacked, and an electrode plate on one principal surface of the electrode assembly and an electrode plate on the other principal surface of the electrode assembly have the same polarity, the direction of current that flows through the positive electrode plate is an opposite direction of the direction of current that flows through the negative electrode plate, and each of the power storage devices is stacked.
Absstract of: US2025138104A1
A method, an apparatus and device, and a computer-readable storage medium for detecting Li-plating in a lithium battery. The method for detecting Li-plating in a lithium battery includes: charging and discharging the lithium battery to be detected at a preset current, and collecting correlation parameters of the lithium battery during the charging and discharging; acquiring a current number of charge-discharge cycles of the lithium battery; calculating a plurality of detection scores for detecting whether there is Li-plating in the lithium battery based on the current number of charge-discharge cycles and the correlation parameters; and determining a fused detection score based on the plurality of detection scores, and determining that there is Li-plating in the lithium battery if the fused detection score exceeds a fused detection threshold.
Absstract of: US2025138090A1
A battery system may include a plurality of battery packs, a plurality of first relays, each first relay of the plurality of first relays connected between a positive electrode of each respective battery pack of the plurality of battery packs and each respective first node of a plurality of first nodes for each of the plurality of battery packs, a plurality of second relays connected between a negative electrode of the respective battery pack and each respective second node of a plurality of second nodes for each of the plurality of battery packs, a capacitor having both ends connected between a first wiring connected to the plurality of first nodes and a second wiring connected to the plurality of second nodes, a resistor and a switch connected in series between the first wiring and the second wiring, and a plurality of pack battery management systems (BMS).
Absstract of: US2025138102A1
An apparatus for diagnosing a state of a battery includes a voltage measuring unit configured to measure a voltage of a battery and measure a target voltage for the battery when the measured voltage reaches a preset first reference voltage, a resistance measuring unit configured to measure a target resistance of the battery when the measured voltage reaches a preset second reference voltage, and a control unit configured to determine a voltage increase/decrease pattern for the target voltage based on a voltage profile in which the target voltage is stored, determine a resistance increase/decrease pattern for the target resistance based on a resistance profile in which the target resistance is stored, and diagnose a state of the battery from the voltage increase/decrease pattern and the resistance increase/decrease pattern according to a preset diagnostic rule.
Nº publicación: US2025140845A1 01/05/2025
Applicant:
LG ENERGY SOLUTION LTD [KR]
LG Energy Solution, Ltd
Absstract of: US2025140845A1
Disclosed is a lithium secondary battery including: a positive electrode; a negative electrode; and an electrolyte, wherein the positive electrode comprises a positive electrode active material layer comprising a positive electrode active material layer composition, wherein the negative electrode comprises a negative electrode active material layer comprising a negative electrode active material layer composition, wherein the positive electrode active material layer composition comprises a positive electrode active material comprising a layered active material containing nickel, and an olivine-based active material, wherein the negative electrode active material layer composition comprises a negative electrode active material comprising a silicon-based active material, and wherein a part by weight of the olivine-based active material (A) based on 100 parts by weight of the positive electrode active material, and a part by weight of the silicon-based active material (B) based on 100 parts by weight of the negative electrode active material satisfy Formulas 1 and 2:4.524+0.939×e0.0537×A
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