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1603
resultados
Última actualización
09/05/2025 [07:17:00]
Resultados 100 a 125 de 1603
Resumen de: EP4550453A1
Provided is a method for producing a solid-state secondary battery electrode, using PTFE, capable of reducing resistance of the electrode and achieving strength of a positive electrode mixture sheet, and a binder.A method for producing a solid-state secondary battery sheet, including (1) preparing a composition for producing a secondary battery sheet by using a binder that is a powder which comprises a polytetrafluoroethylene resin and a conductive aid homogeneously mixed and which is free of an active material, and (2) applying a shear force while mixing the composition for producing a secondary battery sheet to obtain an electrode mixture,wherein step (2) is carried out with a content of a solvent in the composition for producing a secondary battery sheet being 10% by mass or less.
Resumen de: EP4550442A1
This non-aqueous electrolyte secondary battery comprises a negative electrode (12). The negative electrode (12) has a negative electrode mixture layer (32) formed on the surface of a negative electrode current collector (30). The negative electrode mixture layer (32) has a first negative electrode mixture layer (32a) and a second negative electrode mixture layer (32b). The first negative electrode mixture layer (32a) and the second negative electrode mixture layer (32b) include a negative electrode active material. The negative electrode active material in the first negative electrode mixture layer (32a) has two negative electrode active materials M1 and M2 of different volume-average particle size. The ratio (A2/A1) of the volume-average particle size (A2) of the negative electrode active material M2 to the volume-average particle size (A1) of the negative electrode active material M1 is in the range of 0.16-0.5. The ratio (S2/S1) of the inter-particle porosity (S2) of the negative electrode active material in the second negative electrode mixture layer (32b) to the inter-particle porosity (S1) of the negative electrode active material in the first negative electrode mixture layer (32a) is in the range of 3.5-5.0.
Resumen de: EP4550452A1
Provided is a method for producing a secondary battery electrode, using PTFE, capable of reducing electrical resistance thereof and achieving excellent strength at the same time, and a binder. A method for producing a secondary battery electrode using a non-aqueous electrolytic solution, including step (1) of preparing a powder composition for producing an electrode by using a binder that is a powder which is composed of a composition essentially including a polytetrafluoroethylene resin and a conductive aid and which is free of an active material, and step (2) of applying a shear force while mixing the composition for producing an electrode to obtain an electrode mixture, wherein step (2) is carried out with a content of a solvent in the composition for producing an electrode being 10% by mass or less.
Resumen de: EP4550537A1
The present invention relates to a protective film for solid-state batteries, which is a protective film arranged to cover a heat seal part of a solid-state battery including a battery element having a solid electrolyte, a packaging material housing the battery element, the heat seal part being disposed to a peripheral portion of the packaging material, and which contains a hydrogen sulfide adsorbent.
Resumen de: EP4550470A1
A negative electrode material for secondary batteries includes a composite material. The composite material includes an amorphous material phase, and a silicate phase dispersed in the amorphous material phase. The amorphous material phase contains Si, O, and C. The silicate phase contains at least one element M selected from the group consisting of Li, Na, K, Mg, Ca, B, and Al.
Resumen de: EP4550468A1
Provided is a positive electrode active material in which an increase in resistance is suppressed, while the charge/discharge cycle characteristics of a non-aqueous electrolyte secondary battery are improved. The positive electrode active material that is included in the non-aqueous electrolyte secondary battery includes a lithium transition metal composite oxide, said lithium transition metal composite oxide containing Ni, Ca, and Sr, and including secondary particles that are formed by flocculation of primary particles. In an element concentration distribution of a cross-section of the lithium transition metal composite oxide that is obtained using time-of-flight secondary ion mass spectrometry, the Gini coefficient of Ca and Sr on the secondary particle surface is 0.7 or less, and the Gini coefficient of Ca and Sr in the secondary particle interior is 0.6 or less.
Resumen de: EP4550611A1
A charging system (BCS) includes a charger (120) for a storage battery (BM) including a lithium-ion battery, and a battery-side device (20, 100) that monitors a battery state including a lithium precipitation amount in the lithium-ion battery. The charger includes an information acquisition unit (121) that acquires battery information including the battery state from the battery-side device, a charging determination unit (122) that determines whether charging of the storage battery is possible based on the battery information, and a charging control unit (123) that charges the storage battery based on a determination result of the charging determination unit.
Resumen de: EP4549969A1
The battery evaluation system (BRS) is a system for evaluating a storage battery (BM) including a lithium-ion battery. The battery evaluation system includes a battery monitoring unit (20) that monitors a battery state of the storage battery, and an evaluation device (130) that acquires battery state information including a monitoring result of the battery state from the battery monitoring unit and evaluates the storage battery based on the battery state information. The battery monitoring unit calculates a lithium precipitation amount in the lithium-ion battery as one index indicating the battery state. The evaluation device determines safety of the storage battery based on the lithium precipitation amount.
Resumen de: EP4550507A1
The present invention provides a non-aqueous electrolyte characterized by comprising: a lithium salt; an organic solvent; and an additive, wherein the additive includes a compound represented by a specific chemical formula. The non-aqueous electrolyte according to the present invention can suppress the deterioration of a positive electrode, reduce side reactions between the positive electrode and the electrolyte, and form a stable SEI film on a negative electrode, and thus can improve the high-temperature cycle characteristics and high-temperature storage characteristics of a lithium secondary battery comprising the non-aqueous electrolyte.
Resumen de: EP4550544A1
A battery pack comprising a plurality of battery modules according to an embodiment of the present invention may include a case, partition walls configured to partition the inside of the case into a plurality of compartments, a plurality of battery modules disposed in the plurality of compartments, respectively, a cover configured to cover the plurality of compartments from an upper side of the partition walls, and a flame retardant sheet deformed between the partition walls and the cover as the cover moves.
Resumen de: EP4550543A1
The present invention relates to a battery module capable of preventing or delaying a loss of a connector due to flame generated therein to delay thermal propagation to the outside.A battery module according to the present invention may include cell assemblies, each of which includes a plurality of cells, a busbar frame on which a busbar configured to electrically connect the cell assemblies to each other is disposed, an endplate disposed on each of both ends of the cell assembly to cover the busbar frame, a circuit board that is in contact with the busbar so as to be electrically connected to the cell assembly, a connector configured to electrically connect the circuit board to the outside, and a protective plate disposed between the circuit board and the connector to protect the connector from being deformed due to heat.
Resumen de: EP4550444A1
The present application provides a current collector, and a use thereof. The present application can provide a current collector capable of forming an electrode, which does not affect performance and operation of a secondary battery by exhibiting, in a normal state, excellent electrical characteristics including low resistance, and can ensure stability by blocking, in an abnormal state, energization of an electrode assembly through resistance increase, and a use thereof. The present application can also provide a current collector capable of ensuring excellent adhesive force between layers forming the electrode, and a use thereof.
Resumen de: EP4550445A1
The present application relates to a current collector, and a use thereof. The present application can provide a current collector capable of forming an electrode, which does not affect performance and operation of a secondary battery by exhibiting, in a normal state, excellent electrical characteristics including low resistance, and can ensure stability by blocking, in an abnormal state, energization of an electrode assembly through resistance increase, and a use thereof.
Resumen de: EP4550467A1
The present invention provides a positive electrode active material which contributes to the improvement of safety of a secondary battery. This positive electrode active material, which is contained in a nonaqueous electrolyte secondary battery, contains a lithium transition metal composite oxide; the lithium transition metal composite oxide contains Ni, Mn, P, Me (Me is composed of at least one element that is selected from the group consisting of B, Al, Si, Ti, Fe, Co, Sr, Zr, Nb, Mo, Sn, W and Bi), and at least one of Ca and Sr, respectively at specific content ratios; and the ratio m/n of the half-value width m of the diffraction peak of the (003) plane to the half-value width n of the diffraction peak of the (110) plane in an X-ray diffraction pattern obtained by X-ray diffractometry satisfies 0.75 ≤ m/n.
Resumen de: EP4550466A1
The present invention provides a positive electrode active material that is for a non-aqueous electrolyte secondary cell and has high capacity and improved charge/discharge cycle characteristics. The positive electrode active material is included in a non-aqueous electrolyte secondary cell and contains a lithium transition metal composite oxide. The lithium transition metal composite oxide contains Ni and Ca and includes secondary particles formed as a result of primary particles agglomerating. In an element concentration distribution of a cross section of the lithium transition metal complex using time-of-flight secondary ion mass spectrometry, the Gini coefficient of Ca in the secondary particle surfaces is 0.85 or less, the Gini coefficient of Ca in the interior of the secondary particles is 0.6 or less, and the ratio I<sub>Ca_OUT</sub>/I<sub>Ca_IN</sub> of the normalized intensity I<sub>Ca_OUT</sub> in the secondary particle surfaces to the normalized intensity I<sub>Ca_IN</sub> of Ca in the interior of the secondary particles is 1-5 inclusive.
Resumen de: EP4550465A1
Provided is a positive electrode active material for a non-aqueous electrolyte secondary battery that can improve the capacity and durability of the non-aqueous electrolyte secondary battery. The positive electrode active material contained in a non-aqueous electrolyte secondary battery comprises a lithium transition metal composite oxide containing at least 70 mol% of Ni and Mn with respect to the total molar amount of metal elements other than Li, the lithium transition metal composite oxide is composed of single particles, the average particle size of the single particles is 0.65 µm-4 µm, and the crystallite size of the single particles is 380 Å-750 Å.
Resumen de: EP4550456A1
The present application provides a composite negative electrode active material and a preparation method therefor, a negative electrode plate comprising same, a secondary battery and a power consuming device. The composite negative electrode active material comprises a negative electrode active material substrate and a conductive polymer layer on the surface of the negative electrode active material substrate, wherein the cyclic voltammetry curve of the composite negative electrode active material has an oxidation peak within a range of 3.2 V - 3.6 V and a reduction peak within a range of 2.1 V - 2.6 V. The composite negative electrode active material provided by the present application can combine a low volume expansion, a high capacity per gram and a high initial coulombic efficiency, thus enabling a secondary battery to combine a low volume expansion, a high energy density and a long cycle life.
Resumen de: EP4550458A1
The present invention relates to a cathode active material, a method for preparing the same and a lithium secondary battery comprising the cathode active material. The cathode active material comprises agglomerated particles represented by Formula Li1+a1Nix1Coy1Mz1M'1-x1-y1-z1O2 and single crystal particles represented by Formula Li1+a2Nix2Coy2Mz2M'1-x2-y2-z2O2, wherein M is one or two elements selected from Mn and Al, M' is one or more elements selected from B, F, Mg, Si, P, Ca, Ti, V, Cr, Fe, Ga, Sr, Y, Zr, Nb, Mo, Sn, Ba, La, Ce, and W, -0.03 ≤ a1 ≤ 0.20, 0.30 ≤ x1 ≤ 0.99, 0 ≤ y1 ≤ 0.30, 0 ≤ z1 ≤ 0.30, 0 ≤ 1-x1-y1-z1 ≤ 0.10, -0.03 ≤ a2 ≤ 0.20, 0.31 ≤ x2 ≤ 1.00, 0 ≤ y2 ≤ 0.30, 0 ≤ z2 ≤ 0.30, 0 ≤ 1-x2-y2-z2 ≤ 0.10, with the proviso that: 0 < x2-x1 ≤ 0.5.
Resumen de: EP4550437A1
The embodiments of the present application provide a negative electrode plate, including: a current collector and a first active layer provided on a surface of the current collector, where the first active layer includes a first active material and a second active material, the specific surface area of the first active material is greater than the specific surface area of the second active material, the current collector includes a first region and a second region which are arranged in a first direction, and the first active layer corresponding to the first region includes a first active material, and the first active layer corresponding to the second region includes a second active material, the first region being a region formed by the negative electrode plate protruding from a positive electrode plate in the first direction, and the second region being a region formed by the negative electrode plate overlapping with the positive electrode plate in the first direction. The technical solution of the present application can maintain good cycling stability while avoiding lithium plating, facilitating the improvement of the performance of a battery.
Resumen de: EP4550464A1
Provided is a positive electrode active material that has improved charge/discharge cycle characteristics at a high capacity of a non-aqueous electrolyte secondary battery. The positive electrode active material that is included in the non-aqueous electrolyte secondary battery includes a lithium transition metal composite oxide, said lithium transition metal composite oxide containing Ni and Sr, and including secondary particles that are formed by flocculation of primary particles. In an element concentration distribution of a cross-section of the lithium transition metal composite oxide that is obtained using time-of-flight secondary ion mass spectrometry, the Gini coefficient of Sr on the secondary particle surface is 0.85 or less, the Gini coefficient of Sr in the secondary particle interior is 0.7 or less, and the ratio I<sub>Sr_OUT</sub>/I<sub>Sr_IN</sub> of the standardized strength I<sub>Sr_OUT</sub> of the Sr on the secondary particle surface to the standardized strength I<sub>Sr_IN</sub> of the Sr in the secondary particle interior is 1-5 inclusive.
Resumen de: EP4550463A1
This positive electrode active material, which is contained in a nonaqueous electrolyte secondary battery, contains a lithium transition metal composite oxide; and the lithium transition metal composite oxide contains Ni, Ca and Sr, and comprises secondary particles, each of which is composed of aggregated primary particles. With respect to the distribution of element concentrations in a cross-section of the lithium transition metal composite oxide as determined using time-of-flight secondary ion mass spectrometry, the ratio ICa_OUT/ICa_IN of the normalized intensity ICa_OUT of Ca in the surfaces of the secondary particles to the normalized intensity ICa_IN of Ca in the insides of the secondary particles satisfies 2 ≤ ICa_OUT/ICa_IN ≤ 7, while the ratio ISr_OUT/ISr_IN of the normalized intensity ISr_OUT of Sr in the surfaces of the secondary particles to the normalized intensity ISr_IN of Sr in the insides of the secondary particles satisfies 2 ≤ ISr_OUT/ISr_IN ≤ 7.
Resumen de: EP4550462A1
The present invention provides a positive electrode active material which improves the storage characteristics of a nonaqueous electrolyte secondary battery. This positive electrode active material, which is contained in a nonaqueous electrolyte secondary battery, contains a lithium transition metal composite oxide; and the lithium transition metal composite oxide contains Ni, Ca and Sr, and comprises secondary particles, each of which is composed of aggregated primary particles. With respect to the distribution of element concentrations in a cross-section of the lithium transition metal composite oxide as determined using time-of-flight secondary ion mass spectrometry, at least one of the ratio I<sub>Ca_OUT</sub>/I<sub>Ca_IN</sub> of the normalized intensity I<sub>Ca_OUT</sub> of Ca in the surfaces of the secondary particles to the normalized intensity I<sub>Ca_IN</sub> of Ca in the insides of the secondary particles and the ratio I<sub>Sr_OUT</sub>/I<sub>Sr_IN</sub> of the normalized intensity I<sub>Sr_OUT</sub> of Sr in the surfaces of the secondary particles to the normalized intensity I<sub>Sr_IN</sub> of Sr in the insides of the secondary particles is 7 to 20.
Resumen de: EP4550514A1
Provided is a non-aqueous electrolyte secondary battery having excellent safety when an impact from the outside is received. A non-aqueous electrolyte secondary battery according to one aspect of the present disclosure comprises: an electrode body in which a band-shaped positive electrode and a band-shaped negative electrode are wound via a separator; a non-aqueous electrolyte; and an external body accommodating the electrode body and the non-aqueous electrolyte. The positive electrode has a positive electrode current collector and a positive electrode mixture layer formed on both surfaces of the positive electrode current collector. The positive electrode has, near a winding inner end, a tapered portion from the surface of one positive electrode mixture layer to the positive electrode current collector, the tapered portion becoming thinner toward the winding inner end.
Resumen de: EP4550513A1
This sealed battery comprises a bottomed and cylindrical exterior can with an opening portion, a seal assembly closing the opening portion, and a wound electrode assembly housed in the exterior can. The bottom portion of the exterior can or the seal assembly is provided with an exhaust valve. Of the end portions in the winding-axis direction of an outer-most peripheral end of the electrode assembly, the one closer to the exhaust valve is fixed by a first fixing member, and the one farther from the exhaust valve is fixed by a second fixing member. A value obtained by dividing the heat conductivity in the thickness direction of the first fixing member by the volume of the first fixing member is smaller than a value obtained by dividing the heat conductivity in the thickness direction of the second fixing member by the volume of the second fixing member.
Nº publicación: EP4550461A1 07/05/2025
Solicitante:
PANASONIC IP MAN CO LTD [JP]
Panasonic Intellectual Property Management Co., Ltd
Resumen de: EP4550461A1
Provided is a positive electrode active material able to reduce reaction resistance. This positive electrode active material, which is included in a non-aqueous electrolyte secondary battery, contains a lithium-transition metal composite oxide. The lithium-transition metal composite oxide contains prescribed amounts of Ni, Ca, P, and Me (Me being at least one element selected from the group consisting of B, Al, Si, Ti, Mn, Fe, Co, Sr, Zr, Nb, Mo, Sn, W, and Bi). The lithium-transition metal composite oxide contains secondary particles formed by agglomeration of primary particles. On the surfaces of the primary particles, including the surfaces of the secondary particles, there is a surface modification layer containing Ca and P.
BOPI
Sede Electrónica
