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ION CONDUCTOR, COMPOSITE, SHEET, ELECTRODE, SEPARATOR, AND POWER STORAGE DEVICE

Absstract of: EP4664493A1

Provided are an ion conductor whose lithium ion conducting property can be controlled, a composite, a sheet, an electrode, a separator, and a power storage device. The ion conductor (10) contains a solid electrolyte (19) which has a garnet-type crystal structure containing Li, La, Zr, and O, wherein lithium carbonate (19a) is partially present on a surface of the solid electrolyte. The composite (19d) contains the ion conductor and an ionic liquid containing a lithium salt dissolved therein, wherein the ionic liquid contains a fluorine-based anion, and, in a film (19c) which covers the surface of the solid electrolyte, the relative concentration ratio of a fluoride to carbonate ions is 0.1 or greater. The power storage device (11) includes the ion conductor.

AGGREGATES, SHEET, SEPARATOR, ELECTRODE AND POWER STORAGE DEVICE

Absstract of: EP4664589A1

To provide an assembly composite, a sheet, a separator and an electrode in which dendritic growth of metallic Li is suppressed, and a power storage device. The assembly composite (10) which contains oxide grains (19) having a garnet-type crystal structure (22) containing Li, La, and Zr, and inorganic grains composed of a main-group element including Mg. The median diameter of the inorganic grains is 1/2 or less the median diameter of the oxide grains. The volume ratio of the inorganic grains to the oxide grains is 1 vol% or more and 10 vol% or less. The power storage device (11) includes the assembly composite.

Electrolyte composition

Absstract of: GB2641750A

An electrolyte composition for a lithium-ion battery, the composition comprising: (a) 18-35 wt% of lithium salt; (b) 1-25 wt% of solvent additive; and (c) 45-80 wt% of solvent. The total amount of (a), (b) and (c) is less than or equal to 100 wt% of the electrolyte composition. The lithium salt comprises lithium bis(fluorosulfonyl)imide (LiFSI) and lithium 4,5-dicyano-2-(trifluoromethyl)imidazole (LiTDI). The solvent additive comprises one or more fluorinated and/or unsaturated carbonate compounds, such as fluoroethylene carbonate (FEC), vinylene carbonate (VC) or trifluoro-propylene carbonate (TFPC); and is preferably a mixture of FEC and VC. The solvent comprises a cyclic carbonate and a linear carbonate. The cyclic carbonate may be one or more of ethylene carbonate (EC) and propylene carbonate (PC). The linear carbonate may include one or more of dimethyl carbonate (DMC), ethyl methyl carbonate (EMC) and diethyl carbonate (DEC). The solvent may comprise 35-85 wt% cyclic carbonate and 15-65 wt% linear carbonate. The solvent may include 25-55 wt% EC, 10-45 wt% PC and 15-65 wt% DMC. The solvent additive may further include organosilicon or succinonitrile in an amount up to 5 wt% based on the total amount of electrolyte composition.

BOX BODY, BATTERY, AND ELECTRIC DEVICE

Absstract of: EP4664612A1

The present application provides a housing (10), a battery (100), and an electric device, where the housing (10) includes a base plate (110), a mounting beam (130), and a module beam (120), the base plate (110) has a first side surface (111) and a second side surface (112) opposite to each other in a thickness direction (H), a reinforcement structure (113) is provided on the base plate (110), the module beam (120) is disposed on the first side surface (111), the mounting beam (130) is disposed on the second side surface (112), and the reinforcement structure (113) is configured to connect to the mounting beam (130) and/or the module beam (120). The housing (10) provided in embodiments of the present application can utilize the reinforcement structure (113) to connect the mounting beam (130) and/or the module beam (120), thereby enhancing the connection strength between the base plate (110) and the mounting beam (130) and/or the module beam (120), thus achieving the purpose of meeting the high structural strength requirements of the housing (10).

ELECTRODE SUBSTRATE FOR RECHARGEALE LITHIUM BATTERY AND RECHARGEABLE LITHIUM BATTERY INCLUDING THE SAME

Absstract of: EP4664568A1

Disclosed are electrode substrates for rechargeable lithium batteries, and rechargeable lithium batteries including the electrode substrates. The electrode substrate for a rechargeable lithium battery includes a support layer that includes a polymer resin matrix and a fiber, and a metal layer on at least one surface of the support layer. An average cross-sectional diameter of the fiber is in a range of about 0.1 µm to about 10 µm.

METHOD FOR MANUFACTURING POSITIVE ELECTRODE ACTIVE MATERIAL

Absstract of: EP4663606A1

The present invention relates to a method for manufacturing a positive electrode active material and, more specifically, to a method for manufacturing a positive electrode active material, the method comprising the steps of: (A) preparing a lithium composite transition metal oxide by mixing a positive electrode active material precursor and a lithium (Li)-containing raw material and then firing the mixture; and (B) forming a coating layer on the lithium composite transition metal oxide by mixing the lithium composite transition metal oxide and a coating raw material and heat-treating same, wherein the heat treatment includes a temperature increasing section for increasing the temperature and a maintaining section for maintaining the temperature, and includes a section for injecting steam only in the temperature increasing section.

BATTERY PACK

Absstract of: EP4664626A1

A battery pack having a pack case including a lower case and an upper case that define an inner space, a plurality of battery cells in the inner space, a separation sheet between a bottom of the pack case and the plurality of battery cells, and a thermally conductive resin layer between the separation sheet and the plurality of battery cells, in which the separation sheet is coupled to the thermally conductive resin layer, and a first adhesive strength per unit area between the separation sheet and the thermally conductive resin layer is lower than a second adhesive strength per unit area between the pack case and the thermally conductive resin layer.

ELECTROLYTE SOLUTION, BATTERY CELL, BATTERY, AND ELECTRIC DEVICE

Absstract of: EP4664591A1

Provided in this application are an electrolyte solution, a battery cell, a battery, and a power consuming apparatus. The electrolyte solution includes a first anion represented by Formula (I), where X, a, b, R¹, and R² are respectively as defined herein.

SECONDARY BATTERY AND ELECTRICAL DEVICE

Absstract of: EP4664561A1

The present application provides a secondary battery and an electrical device. The secondary battery comprises: a positive electrode sheet, wherein the positive electrode sheet comprises a positive electrode film layer, the positive electrode film layer comprises a positive electrode active material containing transition metal elements, based on the total molar number of the transition metal elements in the positive electrode active material, the molar content of nickel element is not lower than 85%, and the energy per unit area of the positive electrode film layer on a single side of the positive electrode sheet is 15-35 mWh/cm², optionally 20-35 mWh/cm²; and a negative electrode sheet, wherein the negative electrode sheet comprises a negative electrode film layer, the negative electrode film layer comprises a negative electrode active material containing a carbon-silicon composite material, and the carbon-silicon composite material comprises carbon matrix particles having a carbon skeleton and silicon nanoparticles attached to the carbon skeleton. According to the secondary battery, the energy density of the secondary battery is improved by means of the matching design of a positive electrode active material and a negative electrode active material.

NEGATIVE ELECTRODE FOR LITHIUM-ION BATTERY, METHOD FOR MANUFACTURING NEGATIVE ELECTRODE MATERIAL, AND METHOD FOR IDENTIFYING SAME

Absstract of: EP4664544A1

The present invention relates to a negative electrode for a lithium-ion battery, said negative electrode including carbon and silicon, wherein: the negative electrode has a silicon concentration of 2-80 mass% in a negative electrode material layer, and a half-value width of 3.0 deg. or more of a peak in a (111) surface of Si in an XRD pattern in which Cu-Kα lines of the negative electrode are used; and, when performing a charging and discharging test under predetermined conditions using a battery in which the negative electrode, a separator, and a positive electrode are stacked, and an electrolyte solution in which a supporting lithium salt is dissolved in a carbonate solvent is used, and the capacity retention of the battery is 95%, in an X-ray photoelectron spectroscopy (XPS) spectrum of the negative electrode surface, the relationship I528(O1s)/I531(O1s)≥0.1 holds, where I528(O1s) is the peak height near a binding energy of 528 eV, and I531(O1s) is the peak height near 531 eV.

BATTERY SYSTEM, SECONDARY BATTERY, AND ELECTRIC AERIAL VEHICLE

Absstract of: EP4664600A1

A battery system is mounted on an electric vehicle. The battery system includes a secondary battery (2) and a battery control unit. The battery control unit controls the secondary battery (2) to perform a high-rate discharge when the electric vehicle is started. A positive electrode (4) of the secondary battery (2) has a first active material (41) and a second active material (42). The second active material (42) has a high resistance region in which a resistance is higher than that of the first active material (41) in a high-rate discharge region which is the SOC region of the secondary battery (2) where high-rate discharge is performed at startup time. The secondary battery (2) is configured so that, when high-rate discharge is performed at startup time, after the utilization rate of the second active material (42) becomes higher than the utilization rate of the first active material (41), the utilization rate of the first active material (41) becomes higher than the utilization rate of the second active material (42).

DIPHOSPHORUS PENTASULFIDE COMPOSITION, STARTING MATERIAL COMPOSITION FOR SULFIDE-BASED INORGANIC SOLID ELECTROLYTE MATERIALS, SULFIDE-BASED INORGANIC SOLID ELECTROLYTE MATERIAL, METHOD FOR PRODUCING SULFIDE-BASED INORGANIC SOLID ELECTROLYTE MATERIAL, SOLID ELECTROLYTE, SOLID ELECTROLYTE MEMBRANE, ALL-SOLID-STATE LITHIUM ION BATTERY AND METHOD FOR PRODUCING DIPHOSPHORUS PENTASULFIDE COMPOSITION

Absstract of: EP4664492A1

There is provided a diphosphorus pentasulfide composition according to the present embodiment, in which a degree of crystallinity calculated from a spectrum obtained by X-ray diffraction using a CuKa ray as a ray source is equal to or more than 40% and equal to or less than 80%, in a DSC curve of the diphosphorus pentasulfide composition obtained by measurement using a differential scanning calorimeter under conditions of a start temperature of 25°C, a measurement temperature range of equal to or more than 30°C and equal to or less than 350°C, a temperature rising rate of 5°C/min, and an argon atmosphere of 100 ml/min, an endothermic peak is observed in a temperature range of equal to or more than 280°C and equal to or less than 300°C, and a heat of fusion of the endothermic peak is equal to or more than 60 J/g and equal to or less than 100 J/g.

1.5V LITHIUM BATTERY AND MANUFACTURING METHOD THEREFOR

Absstract of: EP4664584A1

The present application relates to a 1.5V lithium battery and a manufacturing method thereof. The lithium battery includes a circuit assembly, a plastic frame, a wound battery core assembly, a first metal housing, a second metal housing, a first insulating seal and an insulating sheath. The wound battery core assembly is arranged in the second metal housing, the first metal housing and the second metal housing dock with each other and fixed by circumferential welding, and the circuit assembly includes a PCB, a low-voltage positive cap, a high-voltage positive connecting piece and a negative elastic piece. In the present application, the circuit assembly can stably output a low voltage of 1.5V. An upper end of the wound battery core assembly is located at a shallow position in the second metal housing is shallow, a length of the positive tab is shortened, the positive tab is not long enough to contact an inner wall of the metal housing, and the risk of a short circuit between the positive tab and the metal housing is completely addressed. The first insulating seal and the second insulating seal can prevent an electrolyte from leaking out or entering the first metal housing, thus guaranteeing stable electrical performance.

METHOD FOR PREPARING METAL-BEARING HYDROXIDE PARTICULATE MATERIAL

Absstract of: EP4663608A1

A method for preparing a metal-bearing M'-hydroxide particulate material, the method comprising the steps of:(a) determining a target value (D') for a median particle diameter D50 of the material to be prepared, preferably the D' being in the range of 3-20 µm ;(b) combining, during a time period (T1-T2), streams of an aqueous solution (βc) containing salts of metals Mc' and an aqueous solution (ω) containing an alkali metal hydroxide in a stirred tank reactor at a pH of 10.5-12.5, determined at 20 °C, thereby increasing the sizes of particles comprising Mc'-hydroxide in a slurry thus formed;(c) continuing step (b) until the D50 of the particles reaches approximately a value of Dc, wherein the amount of metals Mc' provided by the flow of solution (βc) during the period (T1-T2) is θc, wherein Dc=1−ε∗D'3, wherein ε is a predetermined value selected from the range of 0.01-0.9;(d) providing at least a fraction Sc of the slurry obtained in step (c) either to the same or to a different stirred tank reactor, wherein 0

NON-AQUEOUS ELECTROLYTE AND LITHIUM SECONDARY BATTERY COMPRISING SAME

Absstract of: EP4664592A1

The present disclosure relates to a non-aqueous electrolyte including a lithium salt, an organic solvent, and an additive, wherein the additive includes a compound represented by the following Formula 1:In Formula 1 above, R₁ is an allyl group or a propargyl group; R₂, R₃, R₄ and R₅ are each independently selected from hydrogen and an alkyl group having 1 to 5 carbon atoms; L is selected from a single bond and an alkylene group having 1 to 10 carbon atoms; and X is selected from -C(=O)-, -S(=O)- and -S(=O)₂-.

BATTERY, TERMINAL APPARATUS, AND BATTERY MANUFACTURING METHOD

Absstract of: EP4664654A1

This application provides a battery, including a negative electrode plate and a separator. The negative electrode plate includes a negative active substance layer and a functional layer that are stacked. The functional layer includes Mg²⁺, where some of the Mg²⁺ is embedded in the negative active substance layer. The separator includes a base film and a coating layer located on a surface of the base film, and the coating layer bonds the base film and the functional layer. The coating layer includes a polymer material. The polymer material is coordination-crosslinked with at least some of the remaining Mg²⁺ in the functional layer. The polymer material in the coating layer performs a coordination crosslinking reaction with the Mg²⁺ in the functional layer, so as to effectively increase binding strength between the negative electrode plate and the separator, thereby helping prevent deformation of the battery during a cycle process. In addition, after ionization of the polymer material, ionic conductivity performance of the polymer material can be effectively improved, and internal resistance of the battery is reduced, thereby improving fast charging performance of the battery. This application further provides a terminal apparatus including a battery and a method for manufacturing a battery.

BATTERY CELL, BATTERY, AND ELECTRIC DEVICE

Absstract of: EP4664666A1

This application pertains to the technical fields of batteries (100), and provides a battery cell (10), a battery (100), and an electric device. The electric device includes a battery (100), the battery (100) includes a battery cell (10), and the battery cell (10) includes a casing (12), an electrode assembly (11), an electrode terminal (13), an adapter (14), and an insulating member (15). The electrode assembly (11) is disposed within the casing (12). The adapter (14) is disposed within the casing (12) and conductively connected to the electrode assembly (11) and the electrode terminal (13). The insulating member (15) is disposed within the casing (12) and at least partially located between the adapter (14) and the casing (12), and at least a portion of the insulating member (15) is spaced apart from the adapter (14). Spacing at least the portion of the insulating member (15) apart from the adapter (14) can mitigate the problem that heat from the adapter (14) being conducted to the insulating member (15) causes failure of insulation performance of the insulating member (15).

CATHODE ACTIVE MATERIAL, AND CATHODE AND LITHIUM SECONDARY BATTERY COMPRISING SAME

Absstract of: EP4664558A1

The present invention relates to a cathode active material, and a cathode and a lithium secondary battery, comprising same and, particularly, to a cathode active material, and a cathode and a lithium secondary battery, comprising same, the cathode active material comprising a lithium transition metal oxide having a single crystallization degree (X) of 0.50 to 0.75 according to formula 1, wherein the lithium transition metal oxide is in the form of a single particle. In formula 1, a_i represents a value (A_i/A) of the cross-sectional area (A_i) of the ith crystalline particle relative to the single particle cross-sectional area (A) when the single particle consists of i crystalline particles.

NEGATIVE ELECTRODE MATERIAL AND PREPARATION METHOD THEREFOR, AND SECONDARY BATTERY

Absstract of: EP4664555A1

The present disclosure relates to a field of batteries, particular to an anode material, a preparation method thereof, and a secondary battery, wherein the anode material includes a silicon-based active material and a matrix material; the anode material includes hydrogen element, halogen element, nitrogen element, and sulfur element, wherein a mass content of the hydrogen element is mH, a mass content of the halogen element is mX, a mass content of the sulfur element is mS, and a mass content of the nitrogen element is mN, and following relational expressions are satisfied: 0.02≤mX/mH≤5.00, 0.0≤mN/mH≤20.00, 0.05≤mS/mH≤5.00. According to the technical solution, by adjusting the contents of the hydrogen element, the nitrogen element, the sulfur element and the halogen element within an appropriate range, the volume expansion of the anode material can be effectively inhibited, and capacity, initial coulombic efficiency, powder conductivity, cycle performance and rate performance of anode material are improved.

CONTROL METHOD FOR REFRIGERATION SYSTEM, RELATED APPARATUS AND STORAGE MEDIUM

Absstract of: EP4664608A1

Embodiments of the present application provide a control method for a refrigeration system, related devices, and a storage medium, involving battery cooling technology. The method includes: in a case that a current ambient temperature being within a first preset temperature range is determined, a water pump of the refrigeration system and a compressor of the refrigeration system are activated; in a case that a first pressure corresponding to the refrigeration system reaching a preset pressure value is determined, a fan of the refrigeration system is activated, so as to maintain a pressure of the refrigeration system within a preset pressure range for cooling a battery management system; in a case that the current ambient temperature being within a second preset temperature range is determined, the water pump of the refrigeration system is activated, and activation of the compressor and the fan is prohibited.

ASSEMBLY METHOD AND ASSEMBLY APPARATUS

Absstract of: EP4664574A1

An assembly method and an assembly apparatus. The assembly method is used for assembling a battery unit; the battery unit comprises a housing and a plurality of battery cell assemblies connected in series and/or in parallel and accommodated in the housing; each battery cell assembly comprises an active substance coating part and a conductive part; the conductive part is located at one end of the battery cell assembly in the first direction and is used for electrically connecting the active substance coating part and an electrode post of the battery unit; the assembly method comprises the following steps: stacking the plurality of battery cell assemblies in a second direction, the second direction being perpendicular to the first direction; electrically connecting the conductive pats of the plurality of battery cell assemblies; and placing the plurality of battery cell assemblies into the housing.

BATTERY CELL, BATTERY, AND ELECTRIC DEVICE

Absstract of: EP4664664A1

A battery cell (20), a battery (100), and an electric device. The battery cell (20) comprises: an electrode lead-out portion (201), used for leading out the electric energy of the battery cell (20); electrode assemblies (22), each comprising a main body (222) and tabs (221), wherein each tab (221) comprises a transition portion (2211) and a connection portion (2212), the transition portion (2211) is bent relative to the connection portion (2212), the transition portion (2211) is connected between the main body (222) and the connection portion (2212), and the connection portion (2212) is adapted to be connected to the electrode lead-out portion (201); and insulating members (24), each arranged on the bent outer side of the corresponding tab (221), wherein each insulating member (24) comprises a first insulator (241), a second insulator (242), and a third insulator (243), the second insulator (242) is connected between the first insulator (241) and the third insulator (243), the first insulator (241) is fixed to the main body (222), the third insulator (243) is fixed to the electrode lead-out portion (201), and at least part of the transition portion (2211) is not fixed to the insulating member (24). The battery cell (20), the battery (100), and the electric device are beneficial to reducing the risk of tearing the tabs (221).

BATTERY CELL, BATTERY, AND ELECTRICAL DEVICE

Absstract of: EP4664668A1

The present application provides a battery cell (20), a battery (100), and an electrical device, where the battery cell (20) includes a case (22) and an insulating protective layer (24), the insulating protective layer (24) being disposed on an inner wall of the case (22). In the battery cell (20) provided in the embodiments of the present application, the insulating protective layer (24) is disposed on the inner wall of the case of the battery cell (20), where the insulating protective layer (24) can separate the case (22) from the electrolyte solution inside the case (22), so as to reduce the probability of contact between the case (22) and the electrolyte solution, thereby lowering the probability of corrosion breakdown of the case (22).

DEVICE AND METHOD FOR HEATING A TRACTION BATTERY IN AN ELECTRIC OR HYBRID VEHICLE

Absstract of: EP4663471A1

Die Erfindung betrifft eine Vorrichtung zum Heizen einer Traktionsbatterie (2) für ein Elektro- oder Hybridfahrzeug, wobei die Vorrichtung mindestens eine Einrichtung (7) zur Erfassung oder Ermittlung einer Temperatur der Traktionsbatterie (2), einen Kühlkreislauf (9) und mindestens eine elektrische Komponente mit mindestens einem GaN-Leistungstransistor (11) oder SiC-Leistungstransistor aufweist, wobei die Traktionsbatterie (2) und die elektrische Komponente mit dem Kühlkreislauf (9) thermisch gekoppelt sind, wobei in einem Betriebszustand der mindestens eine GaN- oder SiC-Leistungstransistor in Rückwärtsrichtung betrieben wird, wobei eine Steuereinrichtung (10) des mindestens einen GaN- oder SiC-Leistungstransistor derart ausgebildet ist, in Abhängigkeit der Temperatur der Traktionsbatterie (2) den GaN- oder SiC-Leistungstransistor für eine vorbestimmte Zeit in Rückwärtsrichtung keine Gate-Source-Spannung zuzuführen, wobei die vorbestimmte Zeit größer als eine initiale Delay-Zeit ist, sowie ein Verfahren.

BATTERY DIAGNOSIS APPARATUS AND BATTERY DIAGNOSIS METHOD

Nº publicación: EP4664129A1 17/12/2025

Applicant:

LG ENERGY SOLUTION LTD [KR]
LG Energy Solution, Ltd

Absstract of: EP4664129A1

Provided is a battery diagnosis apparatus and a battery diagnosis method. The battery diagnosis apparatus includes a data obtaining unit configured to obtain a first target full-cell profile representing a correspondence between a capacity factor and a voltage of a target cell while a first electric stimulation is being applied to the target cell, and a control circuit configured to generate an estimated full-cell profile based on the first target full-cell profile and an overpotential profile. The control circuit determines a first performance factor group as a primary estimation result for charge/discharge performance of the target cell by applying a cell diagnosis logic to the estimated full-cell profile. The control circuit determines a second performance factor group as a secondary estimation result for the charge/discharge performance of the target cell by applying a factor correction model to the first performance factor group. The second performance factor group includes an estimation result of a negative electrode loading amount of the target cell.