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NEGATIVE ELECTRODE PLATE AND ZINC SECONDARY BATTERY

Resumen de: WO2025197192A1

The present invention provides a negative electrode plate including a negative electrode active material and a nonionic water-absorbing polymer, and comprising a nonionic water-absorbing polymer layer formed from the nonionic water-absorbing polymer on a surface of at least one of a pair of main surfaces. The present invention also provides a zinc secondary battery including a positive electrode, a negative electrode including the negative electrode plate, a separator that isolates the positive electrode and the negative electrode in a manner allowing for hydroxide ion conduction, and an electrolytic solution.

HEAT TRANSFER SUPPRESSION SHEET AND BATTERY PACK

Resumen de: WO2025197179A1

Provided are: a heat transfer suppression sheet which exhibits high holding ability of a particle material and also excellent compression characteristics, is capable of preventing increase in convective heat transfer, and exhibits excellent thermal insulation performance; and a battery pack which comprises said heat transfer suppression sheet and is excellent in safety. A heat transfer suppression sheet (10) includes inorganic particles (30) and first organic fibers (20) having wide stem parts (21) in which the dimension equivalent to the width thereof is 1-100 μm, and branch parts (22) which branch from the stem parts (21). The stem parts (21) of the first organic fibers (20) are multilayered and aligned along a main surface (10a) of the heat transfer suppression sheet (10). In addition, this battery pack has: a plurality of battery cells; and the heat transfer suppression sheet (10). The plurality of battery cells are connected in series or in parallel.

COMPOSITE CURRENT COLLECTOR AND LITHIUM ION BATTERY

Resumen de: WO2025194585A1

A composite current collector and a lithium ion battery, relating to the technical field of battery materials. The composite current collector comprises a modified high molecular polymer film, and a conductive layer and a protective layer that are stacked on at least one side surface of the modified high molecular polymer film; the modified high molecular polymer film comprises a high molecular polymer and a modified material; the modified material comprises a carbon nanotube-grafted carbon fiber material. According to the composite current collector, the high molecular polymer film having improved mechanical properties is prepared by compounding the high molecular polymer and the carbon nanotube-grafted carbon fiber material, and the high molecular polymer film and the conductive layer have excellent cohesiveness, so that the mechanical properties of the composite current collector are significantly improved, the defect rate of a product is reduced, and the popularization of the composite current collector at an application end is promoted.

ELECTRODE SHEET STRUCTURE OF BATTERY, BATTERY, AND PREPARATION METHOD FOR ELECTRODE SHEET

Resumen de: WO2025194584A1

An electrode sheet of a battery. The electrode sheet comprises a metal layer (1), wherein an attenuated-transport layer (2) is provided at the edge of a first end of the metal layer (1); an active material layer (3) is provided on the surface of the attenuated-transport layer (2) away from the metal layer (1); and the resistivity of the attenuated-transport layer (2) is at least 1.1 to 2 times that of the active material layer (3). The attenuated-transport layer (2) disposed between the metal layer (1) and the active material layer (3) reduces the transport rate of electrons, suppresses the deintercalation rate of lithium ions, can solve safety problems such as lithium plating at the edge of the electrode sheet and excessive thickness at the head and tail of the electrode sheet, and ensures that lithium plating does not occur at the head and tail of the electrode sheet, thereby facilitating the improvement of the charging and discharging safety of a battery. In addition, further disclosed in the present invention are a preparation method for an electrode sheet, and a battery.

LITHIUM-RICH MANGANESE-BASED POSITIVE ELECTRODE MATERIAL AND PREPARATION METHOD THEREFOR, POSITIVE ELECTRODE AND BATTERY

Resumen de: WO2025194564A1

The present application relates to the technical field of battery materials, and discloses a lithium-rich manganese-based positive electrode material and a preparation method therefor, a positive electrode and a battery. The preparation method comprises: mixing and sintering a lithium source and a lithium-rich manganese-based precursor, with a ratio of the molar amount of lithium to the total molar amount of metals in the precursor being (1-1.05)+x:1, wherein the lithium-rich manganese-based precursor is at least one of MnxM1-x(OH)a, MnxM1-xOb and MnxM1-x(CO3)c, where 0.05≤x＜0.50; the lithium source is diffused to form lithium-rich Li2MnO3 during the sintering process, and the remaining metal M forms a high-ion-conductivity channel structure in an Mn-deficient state; and the metal M is selected from at least one of Ni, Co, Al, Ti, Mg, Zr, Nb, Cr, Fe, Se, Ru, Sb, Ir, Sn, Y, Sr, W, Mo and V. The preparation method is simple, and can prepare a positive electrode material with a good rate capability and a high charging and discharging rate.

BATTERY STATE ESTIMATION SYSTEM, BATTERY STATE ESTIMATION METHOD, AND BATTERY STATE ESTIMATION PROGRAM

Resumen de: WO2025197446A1

According to the present invention, a measurement value acquisition unit acquires voltage data on a secondary battery measured at regular intervals from a discharge end timing of the secondary battery to a first timing. A difference integrated value calculation unit calculates differential voltages between a voltage measured at a first timing and each of a plurality of voltages measured during an idle period from the discharge end timing to the first timing, and calculates an integrated value of the plurality of calculated differential voltages. A voltage change amount estimation unit estimates a voltage change amount on the basis of the integrated value of the calculated differential voltage by referring to a preconstructed table or preconstructed function describing the relationship between (a) the integrated value of the differential voltages and (b) the voltage change amount from the first timing to a second timing at which the voltage of the secondary battery is considered to converge. An OCV estimation unit estimates the voltage at the second timing by adding the estimated voltage change amount to the voltage measured at the first timing.

TRANSFER MEMBER FOR FORMING NEGATIVE ELECTRODE, NEGATIVE ELECTRODE STRUCTURE, AND METHOD FOR MANUFACTURING SAME

Resumen de: WO2025197956A1

Provided are: a transfer member for forming a negative electrode that ensures adhesion of a carbon-containing layer against handling when forming an electrode having a carbon-containing layer, and that has excellent transferability of the carbon-containing layer onto a solid electrolyte layer or a current collector as a transfer material; a negative electrode structure, an electrode, and a secondary battery using the transfer member; and a method for producing the same. The transfer member for forming a negative electrode is applied to a secondary battery, transfers a carbon-containing layer to a body to be transferred, and includes a substrate having a first linear expansion coefficient, and the carbon-containing layer that contains an electrically conductive carbon allotrope and that has a second linear expansion coefficient in which the absolute value of the difference with the first linear expansion coefficient is 10.0 × 10-6 K-1 or less.

NEGATIVE ELECTRODE STRUCTURE, SECONDARY BATTERY, AND METHOD FOR MANUFACTURING SAME

Resumen de: WO2025197954A1

Provided are: a negative electrode structure having excellent ion conductivity between a negative electrode containing carbon and an oxide-based solid electrolyte layer; a secondary battery capable of operating at room temperature using the negative electrode structure; and methods for manufacturing the negative electrode structure and the secondary battery. The negative electrode structure is characterized by comprising: a negative electrode including an allotrope of carbon having conductivity; an electrolyte layer including an oxide-based solid electrolyte; an intermediate layer disposed between the negative electrode and the electrolyte layer and including at least one among an inorganic material and a lithium alloy that are alloyed with lithium; and a protective layer bonded to the negative electrode on a surface of the negative electrode opposite to a surface in contact with the intermediate layer, wherein an absolute value of a difference between a first linear expansion coefficient of the protective layer and a second linear expansion coefficient of the negative electrode is 10.0×10-6K-1 or less.

BATTERY PACK AND CHARGING CONTROL CIRCUIT

Resumen de: WO2025197711A1

This battery pack comprises a secondary battery and a charging control circuit. The charging control circuit is controllable to charge the secondary battery by constant current charging and constant voltage charging. The charging control circuit estimates deterioration of the secondary battery by using a change in voltage of the secondary battery in the constant current charging.

ESTIMATION DEVICE AND ESTIMATION METHOD

Resumen de: WO2025197105A1

An estimation device (1) comprises an estimation unit (3) that estimates at least a parameter using a storage battery state space model (21) that includes at least a resistance as a parameter, such estimation performed on the basis of the current of a storage battery (50) detected by a current detection device (51) and the voltage of the storage battery (50) detected by a voltage detection device (52). The estimation unit (3) comprises: an inverse sigmoid transformation parameter estimation unit (31) that estimates an inverse sigmoid transformation parameter obtained by performing inverse sigmoid transformation of the parameter; and a sigmoid transformation unit (32) that obtains as an estimated value of the parameter a sigmoid transformation parameter obtained by performing sigmoid transformation of the estimated inverse sigmoid transformation parameter.

SYSTEM AND METHOD FOR MANAGING BATTERY MATRIX CONFIGURATIONS

Resumen de: WO2025196492A1

This disclosure relates to system (200) and method (500) for managing battery matrix configurations. The method (500) includes receiving (501), by a Battery Management System (BMS) (201), one of a first level battery charge signal, a second level battery charge signal, or a battery discharge signal. A second battery module (102) is connected with a first battery module (101) in first voltage configuration (100A) or second voltage configuration (100B). A plurality of switches includes a first set of switches, a second set of switches, and a set of relay switches. The set of relay switches includes first relay switch, second relay switch, and supply control switch. The supply control switch is in one of a first closed state, a second closed state, or an open state. The method (500) further includes managing (502), by the BMS (201), the state of the supply control switch based on the received signal.

SYSTEMS AND METHODS FOR PROTECTING A DEVICE AGAINST FAULTY SWITCHES

Resumen de: WO2025196630A1

Embodiments herein disclose a system and a method for safeguarding devices against deep discharge events caused by faulty boot-up switches. The system includes an energy storage unit connected to a battery management system (BMS), wherein the BMS comprises a boot-up switch, an inhibit circuit, and a fault detection unit. The inhibit circuit enables power from the energy storage unit to reach one or more electronic components for a first time period on the boot-up switch being engaged. The fault detection unit continuously monitors the status of the boot-up switch. If the boot-up switch is activated beyond the first time period (thereby indicating a fault), a protection mode can be activated or an alert can be triggered to an operator.

SELECTIVE LITHIUM EXTRACTION METHOD FOR LITHIUM BATTERY RECOVERY AND USE THEREOF

Resumen de: WO2025195300A1

The present application relates to the technical field of recovery of waste lithium-ion batteries, and particularly relates to a selective lithium extraction method for lithium battery recovery and the use thereof. The selective lithium extraction method for lithium battery recovery comprises the following steps: S1, disassembling and screening; S2, acidification of mixed waste; S3, aging of the mixed waste under a constant temperature; S4, sintering and lithium leaching; S5, impurity removal and filtration of a filtrate; and S6, pH adjustment of the resulting lithium extraction liquid. The selective lithium extraction method for lithium battery recovery of the present application is different from conventional lithium extraction recovery methods, has relatively high selectivity during the impurity removal process, greatly reduces the time required by the impurity removal process and the operation difficulty, also simplifies the preparation process of lithium sulfate, ultimately greatly improves the lithium extraction efficiency and quality, and reduces the cost of a high-purity lithium extraction process; and the method has great market prospects.

BATTERY CELL, BATTERY AND ELECTRIC DEVICE

Resumen de: WO2025194456A1

A battery cell (20), comprising: a casing (21); an electrode assembly (22), wherein the electrode assembly (22) is arranged in the casing (21) and comprises a separator (221) and electrode sheets (222), the separator (221) and the electrode sheets (222) being stacked and wound, and a central space (22a) being formed at the center of the electrode assembly (22); and a buffer member (23), which comprises a buffer portion (231) and an extension portion (232), the buffer portion (231) being arranged in the central space (22a), and the extension portion (232) being located outside the central space (22a) and arranged between the casing (21) and the electrode assembly (22). By means of the configuration of the buffer member (23) comprising the buffer portion (231) and the extension portion (232), the probability of brittle fracture during hot pressing of a winding structure is reduced, and the probability of bur formation is thus reduced; in addition, the spacing between the electrode sheets at the innermost corner of the electrode assembly (22) is reduced, the probability of a large gap occurring between the electrode sheets (222) at the innermost corner of the electrode assembly (22) is reduced, and the probability of lithium plating is reduced. By using the extension portion (232) to separate the electrode assembly (22) from the casing (21), the probability of the electrode assembly (22) colliding with the casing (21) when assembled into the casing (21) is reduced, thereby impro

BATTERY CELL, BATTERY, ELECTRICAL APPARATUS, PROCESSING METHOD, AND PROCESSING DEVICE

Resumen de: WO2025194454A1

A battery cell, a battery, an electrical apparatus, a processing method, and a processing device, belonging to the technical field of batteries. The battery cell comprises an electrode assembly and an elastic pad. The electrode assembly comprises an electrode sheet and a separator, arranged in a wound manner. The elastic pad is disposed at a winding center of the electrode assembly. The separator comprises a winding portion stacked on the electrode sheet, and an extension part connected to a starting end of the winding portion, the extension part being connected to the elastic pad.

SECONDARY BATTERY AND ELECTRONIC DEVICE

Resumen de: WO2025194450A1

A secondary battery and an electronic device. Specifically, the secondary battery comprises a positive electrode, a negative electrode and an electrolyte; the positive electrode comprises a lithium cobalt oxide, a binder and an inorganic additive; the electrolyte comprises lithium difluorophosphate, a dinitrile compound and a trinitrile compound. The positive electrode resistance can be reduced, warping can be suppressed, and the safety and high-temperature storage characteristics of the secondary battery can also be improved.

BATTERY CELL, BATTERY, AND ELECTRIC DEVICE

Resumen de: WO2025194457A1

A battery cell (100), a battery (1000), and an electric device (2000). The battery cell (100) comprises: a jelly roll (10), which comprises electrode sheets and separators (13) which are wound, wherein the jelly roll (10) has a winding gap (103) and comprises a straight portion (101) and bent portions (102) connected to the end portions of the straight portion (101), the electrode sheets include a first electrode sheet (11), the first electrode sheet (11) is provided with a first straight section (111) and a second straight section (112) which are located at the straight portion (101), and the first straight section (111) and the second straight section (112) are located on two opposite sides of the winding gap (103); and a buffer pad (20), which is arranged in the winding gap (103), wherein at least part of the buffer pad (20) is located between the first straight segment (111) and the second straight segment (112).

SYSTEM AND METHOD TO BALANCE CHARGE FOR MULTI TANK SYSTEM VANADIUM REDOX FLOW BATTERY AND OPERATION TOGETHER WITH LITHIUM BATTERY IN HYBRID INTEGRATION

Resumen de: WO2025198530A1

A system and method for balancing the state of charge (SOC) in a multi-tank Vanadium Redox Flow Battery (VRFB) system, particularly in hybrid integration with Lithium Batteries (LiB), is disclosed It addresses SOC imbalance issues in VRFB systems utilizing multiple hydraulically disconnected electrolyte tanks, thereby improving round-trip efficiency by eliminating the need for intermediate DC-DC converters. A small-scale DC-DC converter operating in droop control mode facilitates charge balancing between VRFB clusters during both charging and discharging. the invention provides a droop control method for hybrid energy storage systems (ESS) consisting of VRFB and LiB in both DC and AC coupled configurations. This method dynamically adjusts droop coefficients and voltage/frequency reference levels based on real-time charging and discharging requirements, ensuring optimal power distribution and SOC balance across multiple battery clusters. The system enhances overall efficiency, reliability, and cost-effectiveness of hybrid energy storage solutions by leveraging the complementary strengths of VRFB and LiB technologies.

FLUORINE-DOPED MATERIALS FOR FUNCTIONAL COATING ON LITHIUM-BASED BATTERIES

Resumen de: WO2025199502A1

Improved barriers for protecting cathodes and/or anodes in Li batteries are provided. We have found that F-doping of ALD-grown lithium metal oxides results in a barrier having a highly desirable combination of properties. In particular, these barriers have mixed conductivity where both electronic conductivity and ionic conductivity are important. Furthermore, these barriers also have the desirable mechanical properties of uniform and controllable thickness, and highly conformal deposition.

EASILY WETTABLE SEPARATOR FOR ENERGY STORAGE DEVICES

Resumen de: WO2025199456A1

Porous polymer films including membranes are disclosed that have an improved blend of properties. Porous polymer films made according to the present disclosure can show dramatically improved wicking properties when tested against electrolyte solutions, indicating a significant increase in ion conductivity. The films can also be formed with porosity properties, permeability properties, strength properties, and at thicknesses that further enhance performance.

MECHANICAL DICERS AND THEIR USE

Resumen de: WO2025199068A1

The present inventions relate to methods, systems, apparatuses, controllers, software, and composition of matter associated with rotary dicing of target starting material to generate components. The components may be utilized for energy manipulation device, e.g., battery. The components may be of a battery cell, e.g., a stacked arrangement of battery cells.

BATTERY

Resumen de: WO2025197682A1

The present disclosure provides a battery comprising: a positive electrode having a porous structure; a negative electrode; and a quasi-solid electrolyte disposed between the positive electrode and the negative electrode, wherein the positive electrode contains a first polymer and a conductive auxiliary agent, the proportion of holes having a pore diameter of 0.1-100 μm to all holes, as measured by a mercury intrusion method, is at least 23%, and the quasi-solid electrolyte contains a second polymer having a polar functional group, an ionic compound, and particles.

POWER STORAGE DEVICE

Resumen de: WO2025196975A1

A power storage device (1) comprises: a plurality of battery cells (13) which are arranged one-dimensionally in a first arrangement direction with a gap therebetween or arranged two-dimensionally in the first arrangement direction and a second arrangement direction orthogonal to the first arrangement direction; and a housing (11) which houses the plurality of battery cells (13). A first opening having a plurality of first ventilation holes (21a) in and out of which a gas refrigerant flows is formed in at least one surface of the housing (11) which extends in the first arrangement direction. A second opening in and out of which the gas refrigerant flows is formed in at least one surface different from the surface of the housing (11) in which the first opening is formed. Among the plurality of first ventilation holes (21a), the opening area of at least one of the first ventilation holes (21a) is smaller than the opening area of another first ventilation hole (21a) which has a larger pressure loss in a gas refrigerant flow path between said first ventilation hole (21a) and the second opening than that of the former first ventilation hole (21a).

NON-AQUEOUS ELECTROLYTE BATTERY AND BATTERY PACK

Resumen de: WO2025196907A1

According to an embodiment of the present invention, provided is a non-aqueous electrolyte battery comprising: a positive electrode; a negative electrode; a separator provided between the positive electrode and the negative electrode; and a non-aqueous electrolyte. The separator includes nonwoven fabric. In each of the main faces on both the front and back sides of the separator and the region of a one-third portion at the center of the separator in the thickness direction, the mass ratio of fluorine is 10%-20%, and the mass ratio of phosphorus is 4%-10%. The air permeability of the nonwoven fabric is 30 seconds/100 cm3 to 50 seconds/100 cm3.

INFORMATION PROCESSING DEVICE, INFORMATION PROCESSING METHOD, COMPUTER PROGRAM, AND INFORMATION PROCESSING SYSTEM

Nº publicación: WO2025196899A1 25/09/2025

Solicitante:

KK TOSHIBA [JP]
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