Alerta

BATTERY CELL CAPABLE OF DETECTING ELECTROLYTE LEAKAGE

Resumen de: US20260243622A1

The present disclosure provides a battery cell capable of detecting electrolyte leakage, including: an electrode assembly; an electrolyte; a case 100 comprising a receptor 110 accommodating the electrode assembly and the electrolyte, and a sealing portion 120 at an edge the receptor 110 and sealing the receptor 110 with the electrode assembly and the electrolyte therein; and a leakage sensor 200 coupled to and at the sealing portion 120 configured to detect the electrolyte leaking from the case 100. The leakage sensor 200 includes a conductor 220, at least a portion of the conductor 220 adjacent to and extending along an edge of the sealing portion 120. At least one of resistance, current and voltage of the electric circuit is configured change when leaked electrolyte contacts the conductor 220.

NONAQUEOUS ELECTROLYTE SECONDARY BATTERY

Resumen de: US20260246089A1

The present invention provides a nonaqueous electrolyte secondary battery which is provided with: an electrode body that is obtained by winding a positive electrode and a negative electrode, with a separator being interposed therebetween; and an outer package that contains the electrode body. With respect to this nonaqueous electrolyte secondary battery, the separator comprises a base material layer and a functional layer that is formed on the base material layer; the functional layer comprises a heat-resistant layer which contains a heat-resistant resin and inorganic particles, and resin particles which are dispersed in the heat-resistant layer and have an average particle diameter that is larger than the thickness of the heat-resistant layer; and the resin particles each have a projection part which protrudes from the surface of the heat-resistant layer.

DISTANCE MEASUREMENT APPARATUS AND METHOD, AND BATTERY ASSEMBLY EQUIPMENT AND METHOD

Resumen de: US20260243559A1

0000 A distance measurement apparatus and method, and battery assembly equipment and method. The distance measurement apparatus includes an image capture device, a processor, and a calibration assembly, where the image capture device is configured to capture an image of a gap occurring during assembly of a battery, the processor is configured to process the image to obtain a width dimension of the gap along a first direction, and the calibration assembly is configured to cooperate with the processor to correct an image capture parameter of the image capture device, and configured to cause a difference between a measured value of the gap and an actual value of the gap to be less than a preset value, where the measured value of the gap is the width dimension of the gap along the first direction obtained after an image captured by the corrected image capture device is processed by the processor.

CONTROL METHOD AND APPARATUS FOR CIRCULATING CURRENT IN MULTI-BRANCH PARALLEL BATTERY PACK UNDER RECHARGING OPERATING CONDITION, DEVICE, AND STORAGE MEDIUM

Resumen de: WO2026170782A1

The present disclosure relates to the technical field of battery management, and provides a control method and apparatus for a circulating current in a multi-branch parallel battery pack under a recharging operating condition, a device, and a storage medium. The control method for a circulating current in a multi-branch parallel battery pack under a recharging operating condition comprises: detecting a duration of a recharging operating condition of a multi-branch parallel battery pack; when the duration of the recharging operating condition is greater than a predefined duration, determining a recharging current limit according to a recharging current difference between branches, a maximum allowable recharging current, a maximum cell voltage of a branch having a highest recharging current, and a branch count; when the duration of the recharging operating condition is less than or equal to the predetermined duration, according to the recharging current difference between the branches and the maximum cell voltage of the branch having the highest recharging current, completing circulating current control under the recharging operating condition by means of performing thermal management on the battery pack. The present disclosure reduces circulating current impacts resulting from termination of a recharging operating condition.

ION PERMEABLE MEMBRANE

Resumen de: US20260242230A1

The object of the present invention is to provide an ion permeable membrane which has high quality as a permeable membrane, is capable of coping with an increase in size, has improved yields, has improved handleability, and is achieving weight reduction, and includes a solid electrolyte exhibiting alkalinity and a resin containing a carboxy group, and has an acid value of more than 0 mgKOH/g.

LITHIUM-ION SECONDARY BATTERY

Resumen de: US20260245950A1

0000 One embodiment of the present invention provides a secondary battery that can be used in a wide temperature range and is not susceptible to the ambient temperature. Another embodiment of the present invention provides a highly safe secondary battery. A barrier layer is provided for a positive electrode active material, and an electrolyte containing fluorinated cyclic carbonate or fluorinated linear carbonate is used. The structure of this embodiment leads to a state where almost no coating film, ideally no coating film, is formed on a surface of the positive electrode active material. In addition, aging treatment for forming a coating film on the positive electrode active material can be unnecessary.

CYLINDRICAL BATTERY AND METHOD FOR MANUFACTURING CYLINDRICAL BATTERY

Resumen de: US20260246032A1

0000 This cylindrical battery includes an electrode body, an exterior can, and a sealing body swaged and fixed to the opening of the exterior can via a gasket. The exterior can has: a tip bent part bent so as to extend inward in the radial direction in an opening adjacent to the gasket; and a tip cylindrical part extending in the axial direction. The gasket has a non-continuous part that can be separated in the axial direction at an opposing part that faces the radially inner side of the tip cylindrical part.

METHOD FOR MANUFACTURING LITHIUM HYDROXIDE

Resumen de: US20260242229A1

A method for producing lithium hydroxide including mixing a solid raw material containing lithium carbonate, and a calcium compound, in a medium, so as to provide a calcium carbonate-containing liquid, subjecting the calcium carbonate-containing liquid to solid-liquid separation, so as to remove a solid matter containing calcium carbonate, recovering lithium ion from a lithium ion aqueous solution obtained through the solid-liquid separation, to a recovery liquid, with an electrochemical apparatus including a lithium permselective membrane, and obtaining lithium hydroxide from the recovery liquid, the lithium ion aqueous solution having a concentration of lithium ion of 3,000 ppm by mass or more.

SECONDARY BATTERY

Resumen de: US20260245883A1

A highly safe secondary battery is provided. The secondary battery includes a positive electrode and a negative electrode. The positive electrode includes a positive electrode active material. The positive electrode active material includes lithium cobalt oxide including magnesium. Magnesium concentration in a surface portion of the positive electrode active material is higher than magnesium concentration in an inner portion of the positive electrode active material. The negative electrode includes a negative electrode active material. The negative electrode active material includes a carbon material. The secondary battery is subjected to AC impedance measurement in a state where charging is performed until a voltage reaches 4.5 V, an AC impedance value at a frequency of 1 kHz is less than 90 mΩ.

MODULAR AND SCALABLE BATTERY PACKS

Resumen de: US20260246057A1

0000 A battery pack includes battery cells arranged in an array to form a battery module layer. Multiple layers are vertically stacked with thermal management devices, such as active heat exchangers in the form of battery cold plates, above and below each layer to form a multi-layer battery stack that may be held in compression by a battery pack frame. The multi-layer battery stack and battery pack frame are surrounded by a battery enclosure, which has flat sealing surfaces to ensure robust sealing. The battery pack is associated with a thermal management system for cooling and heating the battery cells of the battery pack. The battery thermal management system provides cooling and heating by alternating cooling flow directions to achieve uniform temperature distribution. The battery pack may also include a vent detection sensor and vent isolators to detect and mitigate effects of a battery thermal runaway event. Multiple battery packs of a common form factor can be combined in parallel in different arrangements for different vehicles to optimize electric vehicle range, performance, and weight distribution. The battery system can be, charged, discharged, controlled, and thermally managed either by a centralized system or distributed system.

Non-Aqueous Electrolyte Solution for Lithium Secondary Battery and Lithium Secondary Battery Including the Same

Resumen de: US20260245962A1

0000 Provided are a non-aqueous electrolyte solution for a lithium secondary battery, which includes a compound represented by Formula 1, a lithium salt, and an organic solvent; and a lithium secondary battery including the same: 0000 0000 wherein all the variables are described herein.

BATTERY CELL AND MANUFACTURING METHOD THEREFOR, AND ELECTRIC DEVICE

Resumen de: WO2026170940A1

Embodiments of the present application provide a battery cell and a manufacturing method therefor, and an electric device. The battery cell comprises a casing, an electrode assembly, and a filler. The electrode assembly comprises a first electrode assembly and a second electrode assembly; the first electrode assembly and the second electrode assembly are stacked in a first direction; in a second direction, the length of the second electrode assembly is greater than that of the first electrode assembly; the second electrode assembly has a first surface facing the first electrode assembly; when viewed in the first direction, the second electrode assembly has an overlapping region that overlaps with the first electrode assembly, and a non‑overlapping region that does not overlap with the first electrode assembly; the side wall of the first electrode assembly close to the non-overlapping region in the second direction and a first surface of the non-overlapping region form a first step; the casing forms a second step corresponding to the first step, and an accommodating space is formed between the first step and the second step; the second direction is perpendicular to the first direction; and the filler is provided in the accommodating space. The technical solution of the present application can improve the safety and reliability of the battery cell.

BATTERY CELL AND MANUFACTURING METHOD THEREFOR, AND ELECTRICAL DEVICE

Resumen de: WO2026170941A1

Provided in the embodiments of the present application are a battery cell and a manufacturing method therefor, and an electrical device. The battery cell comprises a housing and electrode assemblies. A first electrode assembly and a second electrode assembly are stacked in a first direction; in a second direction, the length of the second electrode assembly is greater than the length of the first electrode assembly; the side wall of the first electrode assembly close to a non-overlapping region in the second direction and a surface of the non-overlapping region form a first step; the housing forms a second step corresponding to the first step, an accommodating space being formed between the first step and the second step; the second electrode assembly has a first region, and the first region comprises a region overlapping the accommodating space in the first direction; in the first region, the difference in the bonding force between any two second negative electrode sheets and second separators connected thereto is less than or equal to 2 N/m, and the bonding force between any second negative electrode sheet and a second separator connected thereto is greater than or equal to 5 N/m. The technical solution of the present application can improve the safety and reliability of the battery cell.

BATTERY, BATTERY PACK, AND PREPARATION METHOD FOR BATTERY

Resumen de: WO2026171221A1

The present application relates to the technical field of batteries. Disclosed are a battery, a battery pack, and a preparation method for a battery. The battery comprises: an electrode assembly, a first encapsulation film, and a second encapsulation film, wherein an accommodating groove for mounting of the electrode assembly is provided on the first encapsulation film, and the electrode assembly is arranged in the accommodating groove; the second encapsulation film is arranged opposite to the first encapsulation film, and a hot-melt region surrounding the periphery of the accommodating groove is reserved at each of the second encapsulation film and the first encapsulation film; and the hot-melt regions of the first encapsulation film and the second encapsulation film are respectively provided with a plurality of rows of embossments, the plurality of rows of embossments being arranged around the periphery of the electrode assembly, a spacing L 1 between adjacent embossments in the direction of width of the battery satisfying 0.1 mm≤L 1≤3 mm, and a spacing L 2 between adjacent embossments in the direction of length of the battery satisfying 0.1 mm≤L 2≤3 mm. In the present application, by providing the plurality of rows of embossments in the hot-melt regions and limiting the spacings between adjacent embossments, the melting uniformity of a hot-melt layer can be improved, a sealing effect can be improved, and the prolonging of the service life of a hot-melt pressing hea

LITHIUM-ION SECONDARY BATTERY AND MANUFACTURING METHOD THEREFOR, AND ELECTRICAL APPARATUS

Resumen de: WO2026170778A1

A lithium-ion secondary battery, comprising a negative electrode sheet. The negative electrode sheet comprises a negative electrode current collector and negative electrode active material layers; the negative electrode active material layers comprise a first negative electrode active material layer and a second negative electrode active material layer; the first negative electrode active material layer is located between the negative electrode current collector and the second negative electrode active material layer, the first negative electrode active material layer comprises first artificial graphite, the first artificial graphite comprises primary particles, Dv501 of the first artificial graphite satisfies: 13μm≤Dv501≤18μm, and R1 of the first artificial graphite satisfies: 0

COMPOSITION

Resumen de: US20260241214A1

0000 The present specification discloses a composition, a fire extinguishing device, and a use thereof. The composition and the fire extinguishing device can be applied to a product with a possibility of abnormal heat generation, ignition, and/or explosion during drive, storage, and/or maintenance processes to effectively respond to the heat generation, ignition, and explosion. The composition and the fire extinguishing device can be applied, for example, to an article comprising a plurality of the products to respond to abnormal heat generation, explosion, and/or ignition occurring in any one product, and can prevent propagation of such heat generation, explosion, and/or ignition to other adjacent products. The composition and the fire extinguishing device also have excellent handleability and storage stability. The present specification also discloses a use of the composition and the fire extinguishing device.

BINDER COMPOSITION FOR NON-AQUEOUS SECONDARY BATTERY ELECTRODE, SLURRY COMPOSITION FOR NON-AQUEOUS SECONDARY BATTERY ELECTRODE, ELECTRODE FOR NON-AQUEOUS SECONDARY BATTERY, AND NON-AQUEOUS SECONDARY BATTERY

Resumen de: US20260245906A1

0000 Provided is a binder composition for a non-aqueous secondary battery electrode that can suitably be used to produce an electrode having excellent flexibility and that can enhance battery characteristics of a secondary battery including the obtained electrode. The binder composition for a non-aqueous secondary battery electrode contains a polymer A and yields a film X having a breaking stress MPa and a breaking strain − according to tensile testing that satisfy the following relationship formula: 0.010≤breaking stress MPa/breaking strain −≤1.000.

VEHICULAR BATTERY CASE AND METHOD FOR MANUFACTURING SAME

Resumen de: US20260246050A1

A vehicular battery case 100 includes an upper cover 120 which is a tray-shaped press-formed product functioning as a lid, has a housing portion 121 for housing a battery 10, and is provided with an upper surface projecting portion 123 extending in a vehicle width direction from a left end to a right end and projecting upward on an upper surface 122 of the housing portion 121, an under cover 150 that closes the upper cover 120 from below to house the battery 10, and an upper surface outer lateral reinforcing member 110 arranged on the upper cover 120 and extending in the vehicle width direction from a left end to a right end of the housing portion 121.

DEVICE FOR PRODUCING ROLLED GRAIN LAYER AND METHOD FOR PRODUCING ROLLED GRAIN LAYER

Resumen de: US20260245860A1

0000 A production apparatus for a rolled particle layer comprises: a feeding unit configured to feed particles; a supporting and conveying unit configured to support the particles fed from the feeding unit and convey the particles from upstream to downstream; a squeegee unit disposed with a gap between the squeegee unit and the supporting and conveying unit on the supporting and conveying unit, the squeegee unit being configured to level the particles supported and conveyed by the supporting and conveying unit to form a particle layer; an ultrasonic vibration unit configured to apply vibration to the particles, which are supported and conveyed by the supporting and conveying unit, on an upstream side relative to the gap between the supporting and conveying unit and the squeegee unit; and a rolling unit configured to roll the particle layer.

SODIUM SALTS HAVING BORATE OR ALUMINATE ANIONS

Resumen de: US20260245967A1

0000 A compound of formula (I) or (II): (I) (II) X is Al or B; R<1 >in each occurrence is independently a substituent and two R<1 >groups may be linked to form a ring, with the proviso that at least one R<1 >is a partially fluorinated linear or branched C<1-20 >alkyl group in which one or more non-adjacent, non-terminal C atoms other than the C atom bound to O of X—O may be replaced with O and wherein the fluorinated C<1-20 >alkyl group includes at least one group of formula —CF<2>H or —CFH<2>; and R<2 >in each occurrence is independently a divalent organic group The compounds of formula (I) or (II) may be used in the electrolyte of a sodium battery or sodium-ion battery. 0000

BIDIRECTIONAL ADAPTIVE TERMINAL VOLTAGE (BATV) WITH A BATTERY PACK

Resumen de: US20260246283A1

0000 A Bidirectional Adaptive Terminal Voltage (BATV) system has a battery system to be integrated into various devices (or external loads), without having to modify the electrical characteristics of the devices. The battery system includes a battery cell stack and a battery management system electrically coupled with one another. The battery management system is coupled with the BATV system, which is a bidirectional converter configured to operate in either a buck or boost mode, depending on the voltage conditions of an external load when power is required to be delivered from the battery system to the external load. When the battery system is being recharged from an external power supply or from regenerative energy absorption, the BATV system also operates in either buck or boost mode, as required by recharging conditions.

BATTERY MODULE

Resumen de: US20260246026A1

A battery module comprises a battery sub-module including one or more battery cells, and a barrier disposed to face one side surface of the battery sub-module, in which the barrier includes a rigid member supporting the battery sub-module, and a heat absorbing member accommodated in the rigid member to absorb heat generated by the one or more battery cells.

AMINO-FUNCTIONALIZED POLYSILOXANE COMPOUND AND USE THEREOF, AND ELECTROCHEMICAL ENERGY STORAGE DEVICE USING SAME AS ELECTROLYTE SOLUTION

Resumen de: US20260242399A1

0000 An amino-functionalized polysiloxane compound and a use thereof, and electrochemical energy storage devices using the same as an electrolyte solution are provided. The amino-functionalized polysiloxane compound represented by formula (I) and an electrolyte solution comprising the compound, 0000 wherein n is an integer of 1-4, R<1 >is selected from any one of C1-C5 alkyl and alkoxy; R<2>, R<3 >and R<4 >are selected from alkyl, alkoxy, —(CH<2>)<3>(OCH<2>CH<2>)N(CH<3>)<2>, wherein x is 1-3, and R<2>, R<3 >and R<4 >must have a group selected from —(CH<2>)<3>(OCH<2>CH<2>)N(CH<3>)<2>.

ZINC-IODINE BATTERY

Resumen de: US20260245980A1

0000 An aqueous rechargeable zinc-iodine battery includes an aqueous electrolyte solution including zinc-iodine; a zinc anode; and a double-layered cathode having: a conductive substrate, and an adsorptive layer disposed over the conductive substrate.

DRY ELECTRODE MANUFACTURE WITH COMPOSITE BINDER

Nº publicación: US20260245856A1 20/08/2026

Solicitante:

LICAP TECH INC [US]
LICAP TECHNOLOGIES, INC.

Resumen de: US20260245856A1

0000 A free-standing electrode film may comprise an electrode active material and a composite binder comprising polytetrafluoroethylene (PTFE) and polyvinylpyrrolidone (PVP). An electrode for an energy storage device may comprise a current collector and a film on the current collector, the film including an electrode active material and a composite binder comprising PTFE and PVP. A method of manufacturing a free-standing electrode film may comprise preparing a mixture including an electrode active material and a composite binder, the composite binder comprising PTFE and one or more additional binders selected from the group consisting of PVP, polyvinylidene fluoride (PVDF), polyethylene oxide (PEO), and carboxymethylcellulose (CMC). The method may further comprise adding a solvent to the mixture, subjecting the mixture to a shear force, and, after the solvent has been added and the mixture has been subjected to the shear force, pressing the mixture into a free-standing film.