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POSITIVE ELECTRODE ACTIVE MATERIAL AND POSITIVE ELECTRODE AND LITHIUM SECONDARY BATTERY COMPRISING THE SAME

Resumen de: KR20250128111A

본 발명은 리튬 이차전지의 성능을 향상시킬 수 있는 양극 활물질에 관한 것으로, 50개 이하의 1차 입자로 이루어진 단입자 형태이며, 리튬을 제외한 전체 금속 중 니켈의 함량이 50몰% 이상인 리튬 복합 전이금속 산화물을 포함하고, 본 명세서에 기재된 식 1에 따른 값이 특정 범위를 만족하거나 본 명세서에 기재된 식 2에 따른 값이 특정 범위를 만족하는 양극 활물질, 및 이를 포함하는 양극 및 리튬 이차전지에 관한 것이다.

APPARATUS AND METHOD FOR MANUFACTURING ELECTRODE ASSEMBLY

Resumen de: US2025266483A1

An apparatus for manufacturing an electrode assembly includes a positive electrode plate supply part configured to supply a positive electrode plate, a positive electrode plate moving part configured to move the positive electrode plate located on the positive electrode plate supply part, a negative electrode plate supply part configured to supply a negative electrode plate, a negative electrode plate moving part configured to move the negative electrode plate located on the negative electrode plate supply part, and a stacking part on which the positive electrode plate moved from the positive electrode plate moving part and the negative electrode plate moved from the negative electrode plate moving part are alternately stacked.

BATTERY CELL, BATTERY AND ELECTRIC DEVICE

Resumen de: EP4607677A1

This application provides a battery cell, a battery, and an electric apparatus, and pertains to the field of battery technologies. The battery cell includes an outer shell, the outer shell has a wall portion, and along a thickness direction of the wall portion, the wall portion has a first surface and a second surface opposite to each other. The first surface is provided with a first groove, the second surface is provided with a second groove at a position corresponding to the first groove, a bottom surface of the first groove is provided with a scored groove, and the wall portion is capable of rupturing along the scored groove during pressure relief of the battery cell. This battery cell, first, can reduce the depth required to provide the scored groove on the wall portion, helping lower the manufacturing difficulty of the scored groove and the requirements on production devices, thereby reducing manufacturing costs, and can reduce the forming force exerted on the wall portion in processing the scored groove, helping mitigate the risk of cracks in the wall portion. Second, it can improve the morphology of a flow material during the formation of the scored groove, facilitating the flow of the material generated during the formation of the scored groove, thereby enhancing the structural consistency of the scored groove.

BATTERY AND ELECTRIC DEVICE

Resumen de: EP4607654A1

A battery (200) and an electrical apparatus (1000). The battery (200) includes a plurality of rows of battery units (10A) and a heat exchange assembly (140). The plurality of rows of battery units (10A) are arranged in a first direction. Each row of battery units (10A) comprises a plurality of battery cells (10) arranged in sequence in a second direction. Each battery cell (10) includes a first side wall (111). The first side wall (111) is the side wall with the largest area. The first direction and the second direction are perpendicular to each other. The heat exchange assembly (140) includes a heat conducting plate (70). The heat conducting plate (70) extends between adjacent rows of battery units (10A). The heat conducting plate (70) directly faces the first side walls (111) of at least some of the adjacent battery cells (10) of adjacent battery units (10A).

EXPLOSION PREVENTION VALVE, COVER PLATE ASSEMBLY, BATTERY CORE, BATTERY PACK, AND ELECTRICAL SYSTEM

Resumen de: EP4607070A1

An explosion prevention valve, a cover plate assembly, a battery core, a battery pack, and an electrical system are provided. The explosion prevention valve includes a main body (1), an explosion prevention piece (2), and a temperature-sensitive film (3). The main body is provided with a pressure relief hole (11) extending through a thickness direction thereof. The explosion prevention piece and the temperature-sensitive film are connected with the main body, and are arranged to cover the pressure relief hole. The temperature-sensitive film is made of plastic. In technical solutions of the present disclosure, the temperature-sensitive film is arranged in the explosion prevention valve. When the battery core normally operates, a temperature of the explosion prevention valve is less than a preset temperature, and the temperature-sensitive film and the explosion prevention piece are arranged to jointly cover the pressure relief hole. In this case, an opening pressure PA₁ of the explosion prevention valve is maintained between 0.4 MPa and 1.2 MPa to prevent the explosion prevention valve from being accidentally opened. When the battery core is out of control, the temperature of the explosion prevention valve is greater than the preset temperature, the temperature-sensitive film is softened, and an opening pressure PA₂ of the explosion prevention valve is reduced to be between 0.2 MPa and 1 MPa. In this way, the explosion prevention va

POWER TOOL CONTROL BASED ON BATTERY PACK THERMAL CHARACTERISTICS

Resumen de: EP4606526A1

A power tool system (100) includes a power tool (100), a sensor (455), and an electronic controller (410) of the power tool. The power tool includes a power tool housing (106), a motor housed within the power tool housing, and a pack interface (116) coupled to the power tool housing. The pack interface receives a power tool battery pack having a corresponding tool interface. The sensor senses an electrical parameter corresponding to a power tool battery pack coupled to the pack interface. The electronic controller of the power tool controls the power tool battery pack to discharge current; receives an output of the sensor when the power tool battery pack is controlled to discharge current; generates a temperature estimate by processing the output of the sensor using a thermal model stored on the memory; and generates a temperature warning signal in response to the temperature estimate exceeding a temperature threshold.

BATTERY CELL, BATTERY AND ELECTRIC DEVICE

Resumen de: EP4607686A1

A battery cell, a battery and an electric device, which belong to the technical field of batteries. The battery cell comprises a casing assembly and a battery cell assembly, wherein the casing assembly comprises a casing and a first electrode post; the casing is provided with a mounting hole, through which the first electrode post passes; the battery cell assembly comprises an active-substance coated portion and an electrically conductive portion; the active-substance coated portion is provided in the casing, the electrically conductive portion is electrically connected to the active-substance coated portion and the first electrode post; the first electrode post comprises a first electrode-post portion and a second electrode-post portion, which are formed in a split manner; at least part of the first electrode-post portion is stopped outside the casing; and at least part of the second electrode-post portion is stopped inside the casing, and the second electrode-post portion is connected to the electrically conductive portion.

SELF-SUPPORTING SEPARATOR FOR ELECTROCHEMICAL DEVICE, AND ELECTROCHEMICAL DEVICE COMPRISING SAME

Resumen de: EP4607682A1

The present disclosure relates to a self-supporting separator for an electrochemical device and an electrochemical device including the same, and relates to a self-supporting separator for an electrochemical device, which includes a negative electrode containing a silicon-based active material, wherein the self-supporting separator for an electrochemical device improves compression resistance, improves energy density, and exhibits high lifespan characteristics by adjusting the surface roughness Sa of the separator by adjusting the content and average particle diameter of the inorganic particles, and an electrochemical device including the same.

ELECTROCHEMICAL APPARATUS AND ELECTRONIC DEVICE

Resumen de: EP4607604A1

An electrochemical apparatus includes a negative electrode plate comprising a negative electrode active material. The negative electrode active material includes silicon particles and graphite particles; based on a mass of the silicon particles, a mass percentage of the silicon element is A; in the negative electrode plate, based on a total quantity of the silicon particles and the graphite particles, a quantity proportion of the silicon particles is D, and a quantity proportion of the graphite particles is E; and the electrochemical apparatus has a capacity of B mAh when discharged from a rated full-charge voltage to 3.0 V at a rate of 0.2C, and has a capacity of C mAh when discharged to 2.75 V; where(1.69+8.34A)*D+E/(0.42+9.6A)*D+E>C/B>(0.56+9.46A)*D+E/(0.42+ 9.6A)*D+E.

NEGATIVE ELECTRODE CURRENT COLLECTOR, SECONDARY BATTERY, AND ELECTRICAL DEVICE

Resumen de: EP4607624A1

The present application provides a negative electrode current collector, a secondary battery, and an electrical device. The negative electrode current collector comprises a metal substrate and a conductive layer provided on at least one surface of the metal substrate, the negative electrode current collector has a Vickers hardness of 400 MPa-900 MPa, and the conductive layer has a thickness of 0.5 µm-6 µm, optionally 0.5 µm-5 µm. While the increase of the thickness of the conductive layer is controlled as much as possible, the overall hardness of the negative electrode current collector is improved, thereby improving the machinability of a negative electrode sheet while ensuring the high-capacity characteristic of the battery; moreover, the control on the hardness of the negative electrode current collector avoids the occurrence of a brittle failure in the machining process caused by an excessively high hardness of the negative electrode current collector. If the thickness of the conductive layer exceeds 6 µm, the negative electrode sheet is prone to edge collapse, and the powder is severely separated from the current collector and cutting cannot be performed, so that subsequent machining cannot be achieved.

STRETCHING DEVICE AND METHOD FOR STRETCHING A PLASTIC FILM IN ITS TRANSPORT DIRECTION

Resumen de: EP4606557A2

Die Erfindung betrifft eine Streckvorrichtung zum Verstrecken einer Kunststofffolie in ihrer Transportrichtung mit einer ersten Walze, welche mit einem ersten Antrieb antreibbar und mit einer ersten Rotationsgeschwindigkeit rotierbar ist, und mit einer zweiten Walze, welche mit einem zweiten Antrieb antreibbar und mit einer zweiten Rotationsgeschwindigkeit rotierbar ist, wobei die zweite Rotationsgeschwindigkeit größer als die erste Rotationsgeschwindigkeit ist, wobei im Transportweg der Kunststofffolie die zweite Walze stromabwärts der ersten Walze angeordnet ist, wobei mindestens eine der Walzen eine von außen nach innen luftdurchströmbare Walze ist. Erfindungsgemäß ist die mindestens eine luftdurchströmbare Walze kontinuierlich abreinigbar.

BATTERY MODULE AND BATTERY PACK INCLUDING SAME

Resumen de: EP4607678A1

The present disclosure includes a battery module and a battery pack including the same, and the battery module according to one embodiment of the present disclosure comprises: a battery cell stack in which a plurality of battery cells are stacked; a module frame which comprises a lower frame on which the battery cell stack is mounted, and an upper cover that is coupled with the lower frame while covering the upper part of the battery cell stack; end plates which cover the front and rear surfaces of the battery cell stack; a heat insulating member which is located while covering the upper part and both side surface parts of the module frame, and located while covering the end plate; and a cover member which is located on the heat insulating member, located while covering a partial region of the upper part, both side surface parts and the lower part of the module frame, and located while covering the end plate.

PRE-SODIUM TREATED POSITIVE ELECTRODE MATERIAL FOR COPPER-ZINC-BASED SODIUM ION BATTERY AND METHOD OF PREPARING THE SAME

Resumen de: EP4606773A1

The present invention provides a pre-sodium treated positive electrode material for copper-zinc-based sodium ion battery and method of preparing the same. The method comprises obtaining a mixed solution containing copper-zinc-based elements through wet pre-sodium first, then conducting spray drying of the mixed solution containing copper-zinc-based elements to obtain precursor powder of positive electrode material for copper-zinc-based sodium ion battery, and then mixing the precursor powder with a sodium source for sintering, coating and crushing to obtain positive electrode material for copper-zinc-based sodium ion battery. The pre-sodium treated positive electrode material for copper-zinc-based sodium ion battery provided by the present invention introduces weakly oxidizing zinc and nickel elements on the basis of the copper-based material, reducing the use of highly oxidizing copper and iron elements. After being prepared into a battery, the oxidation of metal ions in the electrochemical environment is reduced overall, greatly reducing the oxidation of copper ions to the electrolyte, reducing the CO₂ gas generated by oxidation and decomposition of the electrolyte, stabilizing the electrochemical environment, and improving the electrical performance of the battery.

NONAQUEOUS ELECTROLYTE AND LITHIUM SECONDARY BATTERY COMPRISING SAME

Resumen de: EP4607649A1

A non-aqueous electrolyte includes a lithium salt, an organic solvent, a compound represented by Formula 1 as a first additive, and a compound represented by Formula 2 or Formula 3 as a second additive, wherein in Formula 1 R represents any one selected from a C1-5 perfluoroalkyl group, a C2-10 alkenyl group, and a C2-10 alkynyl group; in Formula 2, R₁ represents a C1-3 alkylene group that can be substituted with fluorine, and R₂ to R₄ each independently represent any one selected from the group consisting of H, a C1-3 alkyl group, and a nitrile group; in Formula 3, R₅ represents a C1-8 alkylene group that can be substituted with fluorine, and R₆ represents any one selected from the group consisting of H, a C1-10 alkyl group, and a C3-8 cycloalkyl group:

POST TERMINAL END ASSEMBLING METHOD FOR CYLINDRICAL BATTERY

Resumen de: EP4607689A1

The present invention relates to the field of cylindrical battery technologies, and in particular, to a method for assembling a pole terminal of a cylindrical battery. Specific steps are as follows: step 1: laser welding an irregular-shaped screw at a central position of a current collector plate, to form a composite current collector plate; step 2: laser welding the current collector plate to a tab of a core; step 3: covering the current collector plate with an insulating sheet; step 4: covering the insulating sheet and the core with a housing with an opening facing downward, where the irregular-shaped screw extends upward through an irregular-shaped hole to reach an outer side of a top of the housing; step 5: combining a nut and a nut seal gasket to form a composite nut; step 6: rotatably mounting the composite nut on the irregular-shaped screw; and step 7: welding and fixing a threaded fit between the nut and the irregular-shaped screw from above with laser. A positioning requirement in an assembly process is met, and a good electrical connection can be ensured. The yield of a processing process is significantly increased. In addition, the internal space of a cylindrical battery is fully saved. The material of a nut can be flexibly selected for a pack application end, so that the production line compatibility is high.

NEGATIVE ACTIVE MATERIAL COMPOSITE FOR RECHARGEABLE LITHIUM BATTERY, METHOD OF PREPARING THE SAME, AND NEGATIVE ELECTRODE AND RECHARGEABLE LITHIUM BATTERY INCLUDING THE SAME

Resumen de: EP4607600A2

A negative active material composite includes a core and a coating layer around (surrounding) the core. The core includes amorphous carbon and silicon nanoparticles, the coating layer includes amorphous carbon, and an adjacent distance between the silicon nanoparticles is less than or equal to about 100 nm.

CRIMPING APPARATUS FOR CYLINDRICAL BATTERY, HAVING POSITION MEASUREMENT PART FOR CRIMP-PRESSING PART

Resumen de: EP4607662A1

Disclosed is a crimping apparatus for cylindrical batteries with a crimping pressing portion position measurement unit, and more particularly a crimping apparatus for cylindrical batteries, the crimping apparatus including an upper body including a crimping pressing portion and a cam on which the upper body is disposed in plural in a circular shape, the cam being configured to rotate together with the upper bodies, wherein the crimping apparatus includes a position measurement sensor configured to measure the height of the crimping pressing portion.

BATTERY ASSEMBLING SYSTEM AND CONTROL METHOD THEREFOR, AND BATTERY PRODUCTION LINE

Resumen de: EP4607633A1

This disclosure proposes a battery assembly system, a control method, and a battery production line; and relates to the field of battery technologies. The battery assembly system can reduce the risk of congestion during the return process of trays and facilitate the miniaturization of the battery assembly system. The battery assembly system includes a stacking platform, an assembly apparatus, an assembly circulation line, and a return apparatus. The stacking platform is configured to store trays and battery modules located within the trays; one end of the assembly apparatus is connected to one end of the stacking platform via the assembly circulation line; the assembly apparatus is configured to perform assembly process for to-be-assembled battery modules; the assembly circulation line is configured to transport trays carrying the to-be-assembled battery modules to the assembly apparatus; another end of the assembly apparatus is connected to another end of the stacking platform via the return apparatus; and the return apparatus is configured to transport trays carrying assembled battery modules to the stacking platform.

EXPLOSION PREVENTION VALVE, COVER PLATE ASSEMBLY, BATTERY CORE, BATTERY PACK, AND ELECTRICAL SYSTEM

Resumen de: EP4607069A1

An explosion prevention valve, a cover plate assembly, a battery core, a battery pack, and an electrical system are provided. The explosion prevention valve includes a main body (1), an explosion prevention piece (2), and a temperature-sensitive film (3). The main body is provided with a pressure relief hole (11) extending through a thickness direction thereof. The explosion prevention piece and the temperature-sensitive film are connected to the main body, and are arranged to cover the pressure relief hole. The temperature-sensitive film is made of plastic, and has a critical breaking pressure value which is inversely proportional to a temperature of the explosion prevention valve. A thickness of the temperature-sensitive film is A, and may be 0.05 mm ≤ A ≤ 0.5 mm. In technical solutions of the present disclosure, the temperature-sensitive film is arranged in the explosion prevention valve, and a dimension of the temperature-sensitive film is defined. Within the defined dimension, when the battery core is in a normal operating condition, the temperature-sensitive film and the explosion prevention piece can jointly cover the pressure relief hole of the main body, to increase an opening pressure of the pressure relief hole, so as to reduce a risk of accidentally opening the pressure relief hole, and when the battery core is out of control, a high temperature generated after the battery core is out of control quickly softens the temperature-sensitive film, to reduce the ope

SMARTCELL CLUSTER AND BATTERY PACKAGING FOR LOW ELECTROMAGNETIC FIELD EFFECT

Resumen de: EP4606629A1

Various technologies and embodiments are presented to minimize/mitigate electromagnetic field (EMF) effects and electromagnetic interference (EMI) effects generated in a battery module/battery pack when the battery module/battery pack is utilized with alternating current (AC) operation. Respective electrical flowpaths are created throughout a battery module such that EMF/EMI generated in a first portion of a flowpath negates EMF/EMI generated in an adjacent second portion of a flowpath. The battery module operates as a smartcell, wherein battery module comprises a pair of clusterboards located between a first cluster of battery cells and a second cluster of battery cells, wherein the central positioning of the pair of clusterboards functions to isolate the first cluster of battery cells from the second cluster of battery cells.

ANODE ACTIVE MATERIAL AND LITHIUM SECONDARY BATTERY INCLUDING THE SAME

Resumen de: EP4607611A1

An anode active material according to embodiments of the present disclosure includes a silicon-based active material including core particles and a carbon coating which covers a surface of the core particles. An onset temperature of the silicon-based active material measured through a thermogravimetric analysis method is greater than 350°C and less than 390°C, and a ratio of a change value of a weight loss rate to a change value of a temperature of the silicon-based active material measured through a differential thermogravimetric analysis method is 0.000050 to 0.000150.

RECHARGEABLE BATTERY

Resumen de: EP4607637A2

A rechargeable battery of the present disclosure includes an electrode assembly comprising a plurality of electrodes stacked together and having a separator disposed between respective ones of the plurality of electrodes, and an adhesive member disposed at at least two of corner parts of the electrode assembly and attached to cover an upper surface, side surface, and lower surface of the electrode assembly.

PREVENTION OF AIR TRAP FORMATION DURING BIPOLAR STACK BATTERY FABRICATION

Resumen de: EP4607625A1

A bipolar stacked battery that prevents air from becoming trapped during formation of the bipolar stacked battery has a plurality of stacked battery cells. An electrically and ionically insulating frame is formed between each of the plurality of stacked battery cells.

BATTERY AND ELECTRIC DEVICE

Resumen de: EP4607653A1

The present application provides a battery and an electric device, relating to the technical field of batteries. The battery includes a plurality of battery cells, wherein the plurality of battery cells are stacked in a first direction, the plurality of battery cells include two first battery cells located at two ends in the first direction, two adjacent battery cells are provided therebetween with at least one first thermal management component, and one side of at least one of the first battery cells away from the first thermal management component in the first direction is provided with at least one second thermal management component, where in the first direction, the thickness of the at least one second thermal management component is less than the that of the at least one first thermal management component, so that the amount by which the at least one second thermal management component may be compressed in the first direction matches the amount of expansion of the first battery cell in the direction away from the first thermal management component, thereby meeting the expansion requirement of the first battery cell in the direction away from the first thermal management component, and reducing the space occupied by the second thermal management component in the first direction, which is beneficial to improve the energy density of the battery.

POSITIVE ELECTRODE MATERIAL, POSITIVE ELECTRODE SHEET, SODIUM ION BATTERY, MANUFACTURING METHOD THEREFOR, AND USE THEREOF

Nº publicación: EP4607615A1 27/08/2025

Solicitante:

NATFOUND TECH CO LTD [CN]
Natfound Technology Co., Ltd

Resumen de: EP4607615A1

The present invention discloses a positive-electrode material, a positive-electrode plate, a sodium-ion battery, manufacturing methods therefor, and uses thereof. The positive-electrode material of the present invention presents an O3 phase and has a chemical formula of NanMn1-x-y-zMxZnyLizO2; where M is at least one of Cu<2+>, Ni<2+>, Cr<2+>, Fe<3+>, and Co<2+>; where, 0.5 ≤ x ≤ 0.6, 0.05 ≤ y ≤ 0.1, 0.005 ≤ z ≤ 0.05, 0.9 ≤ n ≤ 1.1, and x, y, z, and n meet a principle of electroneutrality numerically; and in the NanMn1-x-y-zMxZnyLizO2, all the element Zn is located at a site Wyckoff 3b in a form of Zn<2+>, and all the element Li is located at a site Wyckoff 4c in a form of Li<+>. Mn serves as a basic framework of a core material of the positive-electrode material. An active element M is doped at the side of Mn to provide capacity, and at the same time Li and Zn are distributed in lattices orderly. Moreover, the synergistic doping and coupling effects of non-active elements Li and Zn facilitate the oxidation/reduction reaction of the active element M and inhibit the unfavorable phase transformations during charging and discharging processes, thereby improving the capacity and cyclic stability of the positive-electrode material.