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Active Fault Detection Method of Energy Storage System, and Energy Storage System

Resumen de: US20260219326A1

An active fault detection method of an energy storage system, and the energy storage system are provided. The active fault detection method of the energy storage system includes: a step of causing the state of charge of an energy storage battery to reach a first preset value; a discharge time acquisition step of causing the energy storage battery to discharge at constant current a until the state of charge thereof reaches a second preset value, stopping discharging, and acquiring a discharge time T, wherein the second preset value is less than the first preset value; and judging whether the discharge time T is less than or equal to a preset discharge time t, if so, judging that the energy storage battery has a hidden fault or the service life thereof is seriously shortened, and if not, judging that the energy storage battery is normal.

ELECTRODE ASSEMBLY FOR SECONDARY BATTERY AND METHOD OF MANUFACTURING SAME

Resumen de: US20260221488A1

Proposed is an electrode assembly for a secondary battery, the electrode assembly includes a stacked body including a first electrode plate, a second electrode plate, and a separator interposed between the first electrode plate and the second electrode plate, and an outer periphery of the stacked body may be wound with the separator for exterior finishing. In addition, the present disclosure may include a method of manufacturing an electrode assembly for a secondary battery that is externally finished with a separator.

BATTERY CELL AND BATTERY MODULE COMPRISING THE SAME

Resumen de: US20260221577A1

0000 A battery cell includes a case; an electrode assembly including a positive electrode, a negative electrode, and a separator, accommodated in the case; and a venting guide member having a guide groove therein into which a sealing portion of the case is at least partially inserted, and pressing the case to delay opening of the case.

Method for Identifying Internal Resistance Consistency Fault in Energy Storage Battery and Energy Storage System

Resumen de: US20260219331A1

0000 A method for identifying an internal resistance consistency fault in an energy storage battery and an energy storage system are provided. The method for identifying an internal resistance consistency fault in an energy storage battery includes: setting an upper limit of cell internal resistance deviation threshold; determining a relationship expression of reference internal resistance of a cell with respect to a reference temperature and reference capacity of the cell; acquiring external circuit resistance of each battery cell and current cell internal resistance; determining an actual cell internal resistance; acquiring reference internal resistance under the reference temperature and reference capacity conditions; comparing actual cell internal resistance with a same serial number in different battery modules with reference internal resistance with the same serial number to obtain an internal resistance deviation value; and determining whether the internal resistance deviation value is greater than the cell internal resistance deviation threshold.

Additive, Electrolyte Comprising Same, and Lithium Ion Battery

Resumen de: US20260221508A1

0000 Provided are an additive, an electrolyte comprising same, and a lithium ion battery. The additive includes 3-(N,N-dimethylamino)propyltrimethoxysilane and a sulfonyl silane compound, and the sulfonyl silane compound has the structure as represented by formula (I). The additive of the present application can have a relatively low HOMO level and a relatively high LUMO level, and can form a stable interfacial film, thereby effectively isolating an electrolyte from the positive and negative electrodes, avoiding an oxidation reaction between the electrolyte and the positive and negative electrodes, reducing the generation of HF, thus reducing the HF corrosion on the positive electrode, inhibiting the gas production of a battery at a high temperature, and improving the high-temperature storage performance and the high-temperature cycle performance of the battery. The formed interfacial film is compact and rich in inorganic substance, and achieves both low-temperature performance and rate capability. 0000

INTERFACE-FREE LOW-IMPEDANCE HIGH-SAFETY ALL-SOLID-STATE BATTERY AND PREPARATION METHOD THEREFOR

Resumen de: US20260221492A1

Provided in the present disclosure are an interface-free low-impedance high-safety all-solid-state battery and a preparation method therefor. In the present disclosure, uniform permeation and wetting is realized by means of a low-temperature method, and a temperature is maintained at 15° C. to 20° C., such that an electrolyte mixed solution before polymerization uniformly permeates into a positive electrode, a negative electrode, and a diaphragm of a battery cell; and then the temperature is gradually increased in a progressive manner, such that a second mixed solution undergoes a polymerization reaction. Therefore, the polymerization is uniform during in-situ polymerization, and a battery is low in interface impedance, good in consistency and stability, and high in first-time cycle efficiency. An all-solid-state battery having a unique interface-free stereoscopic net structure is manufactured, thereby improving the first-time cycle efficiency, and improving the overall electrochemical performance of the battery, and finally industrialization is easily realized.

BATTERY ELECTRODE COMPOSITION COMPRISING CARBON AND SILICON WITH SPECIFIC PROPERTIES FOR SUPERIOR PERFORMANCE

Resumen de: US20260221421A1

0000 In an aspect, a lithium-ion battery anode composition comprises a porous composite particle comprising carbon (C) and an active material comprising silicon (Si), wherein the carbon is characterized by a domain size (r), as estimated from an atomic pair distribution function G(r) obtained from a synchrotron x-ray diffraction measurement of the porous composite particle, ranging from around 10 Å (1 nm) to around 60 Å (6 nm). In a further aspect, a carbon material for use in making an anode composition for use in a Li-ion battery is characterized by a domain size (r), as estimated from an atomic pair distribution function G(r) obtained from a synchrotron x-ray diffraction measurement of the carbon material, ranging from around 10 Å (1 nm) to around 60 Å (6 nm).

SOLID-STATE BATTERY AND PREPARATION METHOD THEREOF

Resumen de: US20260221515A1

Disclosed in the present disclosure is a solid-state battery and a preparation method therefor. According to the preparation method, for a solid-state lithium-ion pouch battery using an in-situ polymerization method, an interface-free effect can be achieved through a two-time liquid injection process, thereby allowing an electrolyte solution to undergo full formation before in-situ polymerization, a full reaction, full gas production and degassing, and achieving the purposes of bubble-free solidification, improving initial efficiency and improving cycle performance of a battery cell. With respect to the problem that initiators cannot be injected, an initiator is mixed with a small amount of a volatile solubilizer to form a second polymer precursor, a first polymer precursor and the second polymer precursor are injected separately, The second polymer precursor and the first polymer precursor can be fully mixed by the in-situ polymerization under a certain polymerization pressure, thereby making a polymerization reaction more uniform.

NONAQUEOUS ELECTROLYTE SECONDARY BATTERY, AND METHOD FOR FABRICATING NONAQUEOUS ELECTROLYTE SECONDARY BATTERY

Resumen de: US20260221521A1

A technique for suppressing formation of a black region in a wound electrode body is provided. A method for fabricating a nonaqueous electrolyte secondary battery disclosed here includes: an assembly step of constructing a secondary battery assembly including a wound electrode body; and an initial charging step of performing initial charging on the secondary battery assembly. In the initial charging step, the secondary battery assembly is charged at a first charging rate until a negative electrode potential with respect to a lithium metal reference (vs. Li/Li+) of the secondary battery assembly reaches at least 0.5 V, and a remaining gas amount of the wound electrode body at the end of the initial charging step is 58 cc or less.

ANODE ACTIVE MATERIAL FOR LITHIUM SECONDARY BATTERY AND METHOD OF PREPARING THE SAME

Resumen de: US20260221433A1

0000 Provided are an anode active material for a lithium secondary battery and a method of preparing the same, wherein the anode active material for a lithium secondary battery includes a silicon-carbon composite including a porous carbon material and a silicon coating layer positioned on the porous carbon material; a metal compound layer positioned on the silicon-carbon composite and including a metal compound that is metal oxide, metal nitride, or a mixture thereof; and a carbon coating layer surrounding the silicon-carbon composite and the metal compound layer positioned on the silicon-carbon composite.

ION-CONDUCTING MEMBRANES, COMPONENTS HAVING THE ION-CONDUCTING MEMBRANES, AND PROCESSES FOR FORMING THE SAME

Resumen de: US20260221481A1

In this disclosure, an ion-conducting membrane, a component having the ion-conducting membrane and a process for making the membrane and the component are disclosed. The ion-conducting membrane includes a homogenous blend and one or more additives. The selected one or more polymers are present in a mass-percentage in a range from 1% to 40. The present ion-conducting membrane simultaneously increases the power and efficiency of the devices by combining advances in materials chemistry, nanotechnology, and manufacturing. The present ion-conducting membrane overcomes limitations in the currently known technologies without compromising the advantageous properties. The present membrane provides non-linear performance enhancement in electrochemical devices that leads to overall system level cost reduction.

BATTERY PACK

Resumen de: US20260221566A1

A battery cell module includes a plurality of battery cells stacked in a first direction, and a first groove extending in the first direction is formed at each of two ends of the first side of the battery cell module. In a second direction, the two first side covers are arranged at two opposite sides of the battery cell module. First bodies of the two first side covers are substantially parallel to a third direction of the battery cell module, and each of the first side covers is provided with an abutting part. The abutting part extends from an edge of the first side cover and is substantially perpendicular to the first body and is connected to a groove wall of the first groove. The two second side covers and the two first side covers are fastened to each other. The abutting part is inserted into the first groove.

CARRY CASE FOR RECHARGEABLE EYEWEAR DEVICES

Resumen de: US20260215557A1

0000 A carry case for an electronics-enabled eyewear device has a case body defining a storage chamber between a pair of opposing main walls configured to bear against a front and a rear of the eyewear device when received in the storage chamber. A power source is housed by the case body. Two or more charging surfaces are electrically connected to the power source and located in the storage chamber for contact engagement with complementary contact formations on the eyewear device to enable charging of an onboard battery of the eyewear device. Each of the opposing main walls has mounted thereon at least one charging surface that extends along the respective main wall for a majority of a height dimension of the main wall. In some embodiments, each main wall carries a pair of charging pads spaced apart along a length dimension of the storage chamber, the charging pads being arranged such that the eyewear device is chargeable in any one of four different orientations in the storage chamber.

SECONDARY BATTERY, BATTERY PACK, ELECTRONIC DEVICE, ELECTRIC TOOL, ELECTRIC AIRCRAFT, AND ELECTRIC VEHICLE

Resumen de: US20260221462A1

Provided is a secondary battery, where a positive electrode includes a first covered part covered with a positive electrode active material layer and a positive electrode active material non-covered part on a positive electrode foil, and a negative electrode includes a second covered part covered with a negative electrode active material layer and a negative electrode active material non-covered part on a negative electrode foil, the positive electrode active material non-covered part is joined to the positive electrode current-collecting plate at one end of an electrode wound body, and the negative electrode active material non-covered part is joined to the negative electrode current-collecting plate at the other end of the electrode wound body.

METAL COMPOSITE HYDROXIDE AND METHOD FOR PRODUCING THE SAME, POSITIVE ELECTRODE ACTIVE MATERIAL FOR LITHIUM ION SECONDARY BATTERY AND METHOD FOR PRODUCING THE SAME, AND LITHIUM ION SECONDARY BATTERY USING THE SAME

Resumen de: US20260217558A1

A positive electrode active material includes a lithium-metal composite oxide which includes secondary particles with a plurality of aggregated primary particles, the secondary particles have a multilayer structure including at least a center at which the primary particles are densely disposed, a void at which the primary particles are more sparsely disposed than the center, and a dense solid portion at which the primary particles are densely disposed, from a center of the secondary particles toward a surface a compound containing tungsten and lithium is present in a concentrated state on a surface layer of primary particles present on a surface of or inside the secondary particles and at a grain boundary between the primary particles, wherein a tap density is 1 g/cm3 or more and 2 g/cm3 or less, and a BET specific surface area is 1.45 m2/g or more and 5.4 m2/g or less.

NONAQUEOUS ELECTROLYTE SOLUTION AND NONAQUEOUS ELECTROLYTE BATTERY

Resumen de: US20260221512A1

Provided is a nonaqueous electrolyte battery in which not only the generation of a gas during high-temperature storage but also an increase in the battery resistance are inhibited. The negative electrode contains an active material containing metal particles alloyable with Li, and graphite composed of Si or a Si metal oxide. The nonaqueous electrolyte solution contains a compound represented by Formula (A); a cyclic carbonate having an unsaturated carbon-carbon bond; and at least one compound selected from the group consisting of compounds represented by the following Formula (B) or (C).

SYSTEM FOR SUPPLYING POWER TO AT LEAST ONE POWER DISTRIBUTION AND DATA HUB USING A PORTABLE BATTERY PACK

Resumen de: US20260223315A1

A system for supplying power to at least one power distribution and data hub using a portable battery pack including a battery enclosed by a wearable and replaceable pouch or skin is disclosed, wherein the pouch or skin can be provided in different colors and/or patterns. Further, the pouch or skin can be MOLLE-compatible. The battery comprises a battery element housed between a battery cover and a back plate, wherein the battery element, battery cover, and back plate have a slight curvature or contour. Further, the battery comprises flexible leads.

NETWORK SECURITY PROTECTION SYSTEM AND METHOD FOR TRACTION BATTERY, AND RELATED DEVICE

Resumen de: WO2026158209A1

The present invention is applicable to the technical field of battery security, and particularly relates to a network security protection system and method for a traction battery, and a related device. The network security protection system is used for performing data transmission between an energy storage device and a cloud platform. The network security protection system comprises a collection control module, a first calculation module, a second calculation module and a communication module. Compared with the prior art, the present invention has the advantages that security examination is performed on a scheduling control command by means of a first calculation module, such that a malicious control command can be rejected when a cloud platform end is controlled by an attacker, so as not to generate a destructive attack effect; and even if the attacker has invaded the interior of a traction battery security system, since the first calculation module and a second calculation module are subjected to management and control separation, the first calculation unit module runs independently, such that the attacker cannot affect same. The first calculation module only checks whether a control operation is destructive in the current environment, and does not perform other operations, thereby not generating interference with normal management control.

BATTERY CELL, MANUFACTURING METHOD FOR BATTERY CELL, BATTERY DEVICE, AND ELECTRIC DEVICE

Resumen de: WO2026157288A1

A battery cell (7), a manufacturing method for a battery cell (7), a battery device (2), and an electric device. Each electrode sheet (731) in an electrode assembly (73) of the battery cell (7) comprises a current collector (7311), an active material layer (7312), a connecting layer (7313), and a solid electrolyte layer (7314) that are sequentially stacked; a recess region (73131) is provided on the surface of the connecting layer (7313) facing away from the active material layer (7312); the recess region (73131) is provided with inwardly recessed recesses (73132); the solid electrolyte layer (7314) is provided on the surface of the connecting layer (7313) facing away from the active material layer (7312) and covers the recess region (73131); and a part of the solid electrolyte layer (7314) enters the recesses (73132) and is connected to the inner walls of the recesses (73132). Since a part of the solid electrolyte layer (7314) enters the recesses (73132) and is connected to the inner walls of the recesses (73132), the solid electrolyte layer (7314) in the recess region (73131) has a large thickness, and the solid electrolyte layer (7314) in the recess region (73131) also has a large contact area with the connecting layer (7313), so that the solid electrolyte layer (7314) is less prone to detachment, thereby reducing the risk of failure of the solid electrolyte layer (7314) due to a small thickness or detachment. Thus, two adjacent electrode sheets (731) are not prone to shor

DOT COATING DEVICE

Resumen de: WO2026157051A1

A dot coating device, comprising an unwinding apparatus (100), a dot coating apparatus (200), a drying apparatus (300), and a winding apparatus (400). The winding apparatus (400) comprises a frame (410), an expanding/contracting roller (420), a material pushing mechanism (430), a supporting portion (450), and a first linear driving member. The left end of the expanding/contracting roller (420) is rotatably connected to the frame (410), and the expanding/contracting roller (420) is used for winding a film. The first linear driving member is arranged on the frame (410), the supporting portion (450) is slidably connected to the frame (410) in the left-right direction, and the first linear driving member can drive the supporting portion (450) to move rightward to a position beneath the expanding/contracting roller (420). The expanding/contracting roller (420) can be contracted, so that a material roll on the expanding/contracting roller (420) falls onto the supporting portion (450). The material pushing mechanism (430) is arranged on the frame (410), and the material pushing mechanism (430) is used for pushing the material roll on the supporting portion (450) from left to right, so that the material roll can be separated from the expanding/contracting roller (420) and the supporting portion (450) and be sleeved on a fork arm of a forklift. The unwinding apparatus in the dot coating device can quickly sleeve the coated material roll on the fork arm of the forklift, thereby reducin

OXYCHLORIDE SOLID-STATE ELECTROLYTE, AND PREPARATION METHOD AND USE THEREOF

Resumen de: US20260221497A1

An oxychloride solid-state electrolyte, and a preparation method and use thereof are provided. The oxychloride solid-state electrolyte is represented by a chemical formula of xLi2O-(1−y)ZrCl4-yAlCl3, where 0

BATTERY CELL, BATTERY APPARATUS, AND ELECTRIC DEVICE

Resumen de: US20260221619A1

A battery cell, including a jelly roll that includes a plurality of electrode plates. A tab and a cut edge are provided at two ends of each electrode plate, respectively; the plurality of electrode plates are classified into first electrode plates and second electrode plates which are arranged in sequence and have opposite polarities; the tabs having opposite polarities are located on different sides of the jelly roll; the tabs located on the same side are electrically connected to a first connecting surface of a connector; and on the same side of the jelly roll, the distance between the first connecting surface and the cut edge is L, the number of electrode plates having the same polarity is n, the number of bending layers of the tabs is m, the thickness of the battery cell is T, and the thickness of each electrode plate is t, satisfying: 0.5≤N−(L−5−0.1*T/2)/(n*m*t)≤15.

METHOD FOR PREPARING GRINDING AID FOR SC/O-DOPED SULFIDE SOLID ELECTROLYTE

Resumen de: WO2026157089A1

The present invention provides a method for preparing a grinding aid for an Sc/O-doped sulfide solid electrolyte. The method comprises: mixing ethanolamine mercaptoacetate, 2-vinyl-5,5-dimethyl-1,3,2-dioxaborolane, 1-allyl-3-ethylimidazole hexafluorophosphate, and potassium ethoxide in a solvent for a reaction, wherein a mercapto-alkenyl addition reaction occurs between the ethanolamine mercaptoacetate and the 2-vinyl-5,5-dimethyl-1,3,2-dioxaborolane, and a mercapto-alkenyl addition reaction occurs between the ethanolamine mercaptoacetate and the 1-allyl-3-ethylimidazole hexafluorophosphate; and after the reaction is complete, removing the solvent to obtain the grinding aid for an Sc/O-doped sulfide solid electrolyte. The grinding aid can improve the microstructure of an electrolyte material and thus improves the electrical conductivity and safety of the electrolyte material.

Pouch Film Laminate, Pouch Type Battery Case, and Pouch Type Secondary Battery

Resumen de: US20260221545A1

0000 A pouch film laminate according to the present disclosure includes a base material layer, a gas barrier layer, a first sealant layer, and a second sealant layer which are sequentially laminated, wherein an elastic modulus of the first sealant layer is greater than an elastic modulus of the second sealant layer. A pouch type battery case comprising the pouch film laminate, and a pouch type secondary battery comprising the pouch type battery case are also disclosed.

COMPARATOR CIRCUIT PROVIDED WITH MOS TRANSISTORS USED AS DIFFERENTIAL PAIR, AND POWER SUPPLY APPARATUS WITH THE COMPARATOR CIRCUIT

Nº publicación: US20260221962A1 30/07/2026

Solicitante:

NISSHINBO MICRO DEVICES INC [JP]
NISSHINBO MICRO DEVICES INC.

Resumen de: US20260221962A1

0000 A comparator circuit includes a comparator, which detects an abnormal voltage of a secondary battery, and uses PMOS transistors or NMOS transistors used as a differential pair. The comparator circuit includes a control circuit that is configured to control voltages of two input terminals of the comparator are to be equal to each other in a standby state in which an operation of the comparator circuit is in a stop state.