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1452
results.
Updated on
06/05/2025 [07:23:00]
Results 500 to 525 of 1452
Absstract of: US2025140809A1
The present invention relates to a positive electrode active material and a lithium secondary battery including the same, and more particularly, to a positive electrode active material including an overlithiated lithium manganese-based oxide, wherein through surface modification of the lithium manganese-based oxide, the surface resistance of the lithium manganese-based oxide is reduced, thereby improving the lifetime characteristics of the lithium secondary battery, which uses the lithium manganese-based oxide as a positive electrode active material, and a lithium secondary battery including the same.
Absstract of: US2025140786A1
The non-aqueous electrolyte secondary battery according to one aspect of the present disclosure comprises a positive electrode, a negative electrode, and a non-aqueous electrolyte, wherein: the negative electrode has a negative electrode current collector and a negative electrode mixture layer formed on the surface of the negative electrode current collector; the negative electrode mixture layer has a first negative electrode mixture layer facing the negative electrode current collector and a second negative electrode mixture layer facing the positive electrode; the negative electrode mixture layer includes a particulate negative electrode active material; at least the second negative electrode mixture layer includes carbon nanotubes; and when the interparticle porosity of the negative electrode active material in the first negative electrode mixture layer is S1, and the interparticle porosity of the negative electrode active material in the second negative electrode mixture layer is S2, 3.5≤S2/S1≤5.0 is satisfied.
Absstract of: US2025140798A1
A cathode mixture, a cathode including the same, an all-solid-state secondary battery including the cathode, and a method of manufacturing the all-solid-state secondary battery are provided. The cathode mixture includes a lithium sulfide composite and a solid electrolyte, wherein, in an X-ray diffraction analysis spectrum, a first peak that appears (e.g., exists) at a diffraction angle 2θ of about 26° to about 27.5° has a first intensity (IA), a second peak that appears (e.g., exists) at a diffraction angle 2θ of about 30.02° to about 30.06° has a second intensity (IB), and an intensity ratio ((IB/IA) of the second intensity to the first intensity satisfies 1
Absstract of: US2025140779A1
A method for producing a first electrode of a battery cell including producing a main body of the first electrode having an active material of the first electrode and a copolymer and wetting the main body with a liquid electrolyte and forming a gel polymer electrolyte as a result of reaction of the copolymer with the liquid electrolyte and forming the first electrode.
Absstract of: US2025141036A1
An embodiment battery housing including a base plate configured to support a battery module and a side member extending along a periphery of the base plate to define a receiving space in which the battery module is accommodated, wherein the side member has a guide passage defined therein to guide a fluid generated from the battery module to outside of the receiving space.
Absstract of: US2025141054A1
An assembly according to an embodiment includes: a device unit including a device having a first installation surface and a device busbar including a first extending portion extending in contact with the first installation surface and a first connecting portion extending continuously from the first extending portion; and a battery unit including a battery pack having a second installation surface facing the first installation surface and a battery busbar including a second extending portion extending in contact with the second installation surface and a second connecting portion extending continuously from the second extending portion and connectable to the first connecting portion, in which a gap is formed at least one of between the first installation surface and the first connecting portion and between the second installation surface and the second connecting portion.
Absstract of: US2025141037A1
A battery cell includes a gas flow vent system including a cell can having a plurality of walls that define a cell stack receiving zone. The plurality of walls include a vent surface including a vent opening and a gas flow guide surface. A cell stack is arranged in the cell stack receiving zone. A spacer is arranged in the cell stack receiving zone adjacent the gas flow guide surface. The spacer includes a first surface facing the cell stack and a second surface spaced from the gas flow guide surface so as to define a gas flow duct that channels gases from the cell stack to the vent opening.
Absstract of: US2025141048A1
A secondary battery includes: an electrode assembly; a case accommodating the electrode assembly and having at least one opening; a cap assembly coupled through the opening to seal the case; and at least one first spacer in contact with one side of the electrode assembly and one side of the case and located in a space between the electrode assembly and the case. The first spacer is has a shape corresponding to the shape of a space between the electrode assembly and the case.
Absstract of: US2025141044A1
An insulating film for a secondary battery, which has desired insulating property and heat resistance, and which contributes to an increase of the energy density of a battery without considerable increase of the thickness. An insulating film for a secondary battery, including a substrate film which is a polyolefin microporous membrane, and having a metal oxide contained in the substrate film. In the insulating film, the metal oxide is contained in at least some of micropores and is present on the inner wall of the micropores. A method for producing the insulating film for a secondary battery is a method of spraying a solution containing an alkyl compound corresponding to a metal of the metal oxide and/or a partial hydrolysate of the alkyl compound over the substrate film, and drying the solution.
Absstract of: US2025141053A1
Provided is a battery assembly according to example embodiments. The battery assembly includes a cell stack with first to third pouch type battery cells, and a first bus bar assembly. The first bus bar assembly includes a first bus bar, a second bus bar, and a first integrated circuit including a first sensing bar configured to measure electric potentials of a second negative electrode lead of the second pouch type battery cell and a third positive electrode lead of the third pouch type battery cell. A thickness of the first sensing bar is less than a thickness of the first bus bar.
Absstract of: US2025140782A1
Method for restoration performances of aged nickel-rich NMC cathode material for lithium-ion secondary battery, the method including: forming a cathode with the aged nickel-rich NMC cathode material and carbon black; and exposing the cathode to diethyl phosphoramidate at an exposure temperature below 160° C. so as to obtain a lithium phosphate protective layer on the cathode.
Absstract of: US2025140796A1
An active material layer is provided with at least one first pore structure, and the active material layer satisfies the following conditions: (a) 0≤M/d≤0.5, where M is a mass percentage of the first active material in the active material layer, and d is a ratio of a depth of the first pore structure to a thickness of the active material layer; and (b) −1%≤0.2M−S≤3%, where S is a porosity of the active material layer. Adding the first active material with a larger gram capacity can increase the capacity of the electrochemical apparatus.
Absstract of: US2025140797A1
This application discloses a positive electrode plate, an electrode assembly, a battery cell, a battery, and an electric device. The positive electrode plate includes a positive electrode current collector and a positive electrode active substance layer located on a surface of the positive electrode current collector. The positive electrode active substance layer includes a Li-containing active material and a Na-containing active material, where a mass ratio of the Na-containing active material and the Li-containing active material is P1, satisfying 0.02≤P1≤50. Having a positive electrode active substance layer that employs a combination of Li-containing and Na-containing active materials, the positive electrode plate can have both high energy density and high low-temperature capacity retention rate.
Absstract of: US2025140799A1
A lithium metal battery may include an anode current collector, a protective film on the anode current collector, a separator, a gel polymer electrolyte, and a cathode, wherein the lithium metal battery may further include an anode active material layer between the anode current collector and the protective film or is free of the anode active material layer, the protective film includes boron nitride (BN) and a binder, and the gel polymer electrolytes contains a gel polymer, BN, a nitrile-based compound, and a liquid electrolyte.
Absstract of: US2025140807A1
A secondary cell comprising an anode, a cathode, an electrolyte, and optionally a separator, characterized in that the anode comprises a substrate and a lithium ion storage layer comprising particles, wherein the lithium ion storage layer is deposited on the substrate; a method for its manufacturing; and a vehicle comprising such secondary cell.
Absstract of: US2025141056A1
A battery module includes a cell assembly, a first component, and a first conductive member. The cell assembly includes a plurality of cells, the cell includes a cell shell and an electrode terminal, and each electrode terminal includes a welding portion. The plurality of cells include a first cell and a second cell. The first component and the cell shell are arranged along a first direction. The first conductive member is disposed on a side of the first component, the side of the first component being a side oriented away from the cell shell. The first conductive member includes a first connection portion and a second connection portion. The first connection portion is welded to the electrode terminal of the first cell. Along the first direction, a projection of the welding portion of at least one second cell overlaps a projection of the first conductive member.
Absstract of: US2025141052A1
A bus bar 20 is a plate-shaped bus bar 20 that connects a plurality of power storage elements 11, and includes a plurality of connection portions 21 connected to electrode terminals 12A and 12B of the plurality of power storage elements, and one or more intermediate portion 22 that couples the adjacent connection portions 21, the connection portions 21 include electrode welding portion 23 disposed so as to respectively oppose the electrode terminals 12A and 12B and welded to the electrode terminals 12A and 12B, the intermediate portion 22 is provided with one or more slit 24, and the slit 24 has a shape elongated in an arrangement direction in which the connection portions 21 are arranged side by side and has a predetermined dimension in a width direction orthogonal to both the arrangement direction and an opposing direction in which the electrode welding portions 23 opposes the electrode terminals 12A and 12B.
Absstract of: US2025141045A1
A separator for a rechargeable lithium battery and a rechargeable lithium battery including the same are disclosed. For example, in an embodiment, provided is a separator for a rechargeable lithium battery including a heat resistant layer and an adhesive layer which are sequentially formed on at least one surface of a substrate, wherein the heat resistant layer includes a ceramic, the adhesive layer includes an adhesive binder and an organic filler, and the adhesive binder includes a polymer having an interpenetrating polymer network (IPN) structure.
Absstract of: US2025141050A1
An elastic sheet for an all-solid-state battery and an all-solid-state battery including the elastic sheet for an all-solid-state battery, the elastic sheet for an all-solid-state battery includes a (meth)acrylate copolymer; an aluminum hydroxide; and inorganic nanotubes, and the all-solid-state battery includes the elastic sheet; and an electrode assembly, wherein the electrode assembly includes a positive electrode, a negative electrode, and a solid electrolyte layer between the positive electrode and the negative electrode, and the elastic sheet is outside at least one of the positive electrode and the negative electrode.
Absstract of: US2025141069A1
A method to produce an energy storage battery having the steps of: providing an electrochemical cell, which is at least partially complete and is provided with an electrical collector; providing a container having a first wall; placing, on an outer surface of the first wall, an outer body, which constitutes an electrical pole of the battery; and inserting the electrochemical cell into the container bringing the electrical collector close to the first wall; providing the electrical collector with an access from the outside of the container in order to permit a weld between the electrical collector and the outer body in order to establish an electrical connection; welding the electrical collector and the outer body to one another through the aforementioned access in order to establish an electrical connection.
Absstract of: US2025141073A1
A secondary battery includes an electrode assembly including first and second electrode base material tabs at opposite sides, a hexahedral case for accommodating the electrode assembly, having opened ends respectively adjacent the first and second electrode base material tabs, and including first, second, third, and fourth surfaces respectively facing long and short sides of the electrode assembly, first and second cap assemblies respectively coupled to the case at the opened ends, and respectively including first and second electrode terminals respectively electrically connected to the first and second electrode base material tabs, and first and second insulators for insulation from the electrode assembly, and a retainer between at least one of the third surface or the fourth surface and at least one of the short sides, and at least partially covering the first insulator or the second insulator.
Absstract of: US2025141074A1
A single battery includes a casing, a first cover plate, a first terminal, an electrode assembly, and a first insulating member. The casing includes a first opening. The first cover plate seals and is installed on the first opening. The first terminal is installed on the first cover plate. The electrode assembly is arranged in the casing and has a first tab extending from a side close to the first cover plate. The first tab is fixedly connected to the first terminal and is formed with a first tab free end. The first insulating member is installed on a side of the first cover plate close to the electrode assembly. The first insulating member is provided with a tab blocked structure. A side of the first terminal close to the electrode assembly and the tab blocked structure form a first accommodating space.
Absstract of: US2025141071A1
A battery, includes: electrode body including positive and negative electrodes being alternately layered in a first direction with separator provided therebetween. The positive electrode current collector has a first burr and the negative electrode current collector has a second burr. In the battery, either the following (A) or (B) is satisfied: (A) plural first burrs do not include a pair of first burrs in which protrusion directions of adjacent first burrs differ, and plural second burrs do not include a pair of second burrs in which protrusion directions of adjacent second burrs differ; or (B) plural first burrs include only one pair of first burrs in which protrusion directions of adjacent first burrs differ, and plural second burrs include only one pair of second burrs in which protrusion directions of adjacent second burrs differ.
Absstract of: US2025140978A1
A battery box and a manufacturing method for a battery box are provided. The battery box includes at least two welded bottom plates. Each of the bottom plates is provided with a fourth cavity. The fourth cavity is configured to circulate coolant. Each of the bottom plates includes a first side wall welded to the adjacent bottom plate. The first side wall has a set width W2. The outermost bottom plate includes a second side wall spaced apart from the first side wall. The second side wall has a set width W3, where 2W2>W3. The battery box of the present disclosure can solve the problem of high manufacturing difficulty of the battery box in the prior art due to high structural complexity of the battery box.
Nº publicación: US2025140801A1 01/05/2025
Applicant:
L&F CO LTD [KR]
L&F CO., LTD
Absstract of: US2025140801A1
Disclosed is a cathode active material for secondary batteries including a core containing lithium transition metal oxide, a first coating portion formed on at least a part of the surface of the core, and a second coating portion formed on at least a part of the surface of the core where the first coating portion is not formed and optionally covering a surface of the first coating portion, wherein the first coating portion has a higher crystalline area proportion and the second coating portion has a higher amorphous area proportion. The cathode active material can improve structural stability and prevent electrolyte side reactions by effectively suppressing oxygen desorption or the like, thereby providing a secondary battery with desired characteristics.
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