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NON-AQUEOUS ELECTROLYTE SECONDARY BATTERY

Resumen de: US20260331593A1

0000 In the present invention, a negative electrode has a non-facing part on the side of the electrode body on the inner end side in the winding direction. The non-facing part has a composite material non-facing part, in which the negative electrode composition layer is formed on at least one surface of the negative electrode core. In the composite material non-facing part, the winding-direction length of a negative electrode composite layer formed on an inner circumference surface of the negative electrode core is 0.3 turns or more along the winding direction of the composite material non-facing part, and the winding-direction length of a negative electrode composite layer formed on an outer circumference surface of the negative electrode core does not exceed ⅔ of the winding-direction length of the negative electrode composite layer formed on the inner circumference surface of the negative electrode core.

CYLINDRICAL BATTERY

Resumen de: US20260331523A1

0000 A positive electrode includes, between the winding start side end of a positive electrode mixture layer and the winding end side end of the positive electrode mixture layer in an o-direction, a first positive electrode core exposed portion positioned at one edge in a β-direction and to which a positive electrode lead is connected, and a second positive electrode core exposed portion positioned at the other edge in the β-direction and a part of which is opposite the first positive electrode core exposed portion in the β-direction with a part of the positive electrode mixture layer therebetween. The part of the positive electrode mixture layer is disposed between the first and second positive electrode core exposed portions in the β-direction. The width-direction length a between the first and second positive electrode core exposed portions is not less than 10% of the β-direction length b of the positive electrode.

CHARGER AND OCV DATA ACQUISITION METHOD

Resumen de: US20260328856A1

A charger includes a control unit, a voltage measurement unit, and an OCV data extraction unit. The control unit controls charging of a secondary battery when the secondary battery is attached to the charger. The voltage measurement unit measures a terminal voltage of the secondary battery during charging. The OCV data extraction unit extracts OCV data that can be used to analyze the deterioration degree of the secondary battery. The charger has a first mode and a second mode as one cycle of charging of the secondary battery. In the first mode, the control unit charges the secondary battery with a predetermined current value. The voltage measurement unit measures a terminal voltage value (α) of the secondary battery. The control unit and the voltage measurement unit shift to the second mode after the end of the first mode. In the second mode, the control unit suspends charging for a predetermined suspension time. The voltage measurement unit measures the OCV value (β) of the secondary battery immediately after the elapse of the suspension time. The control unit and the voltage measurement unit return to the first mode after the end of the second mode. The control unit compares a terminal voltage value (αA) acquired in the first mode with a terminal voltage value (αB) acquired in the first mode one cycle before the first mode. The control unit controls the first time such that a difference value between the terminal voltage value (αA) and the terminal voltage value (αB)

VAPORIZING DEVICE

Resumen de: US20260324718A1

0000 A vaporizing device can include a pod including a pod battery to power the pod to produce and emit vapor through a mouthpiece. The pod can be a single-use disposable vaporizing device pod. The vaporizing device can also include a power bank including a power bank battery. The power bank and the pod can be structured to fit together in a combined configuration. The power bank battery can charge the pod battery with the power bank and the pod fit together and electrically connected to each other in the combined configuration. The pod can produce and emit vapor in a standalone configuration wherein the pod is not fit together with the power bank or electrically connected to the power bank. Also, the pod can produce and emit vapor in the combined configuration wherein the pod is fit together with the power bank and electrically connected to the power bank.

POLYMER ELECTROLYTE AND SECONDARY BATTERY

Resumen de: US20260331579A1

0000 A polymer electrolyte that exhibits high ionic conductivity. The polymer electrolyte contains a polymer having a specific free terminal polyether structure, a specific polyether cross-linked structure, and a specific fluorine sulfonylimide anionic group, and the volume swelling ratio of the polymer electrolyte determined by a methyl ethyl ketone immersion method is 40% to 120%.

RECTANGULAR SECONDARY BATTERY

Resumen de: US20260331594A1

0000 A rectangular secondary battery includes a wound electrode body and an insulating protective film wound around the electrode body to cover the electrode body, wherein the insulating protective film has at least side circumferential surface parts that extend in a circumferential direction of side circumferential surfaces of the electrode body and a bottom surface part that covers a bottom surface of the electrode body, on the side circumferential surface of the wound electrode body, an end surface overlapping part in which end surface parts on both sides of the insulating protective film overlap each other is formed. The end surface overlapping part has penetration regions and reaching the side circumferential surface of the electrode body, and the periphery of the penetration regions of the end surface overlapping part and the side circumferential surface of the electrode body are bonded and fixed through the penetration regions with an electrically insulating tape.

BATTERY PACK

Resumen de: US20260331680A1

A battery pack capable of lashing a battery group without using a side rail that connects a pair of end plates together is obtained. A battery pack 1 of the present invention has a battery main body 20 having a battery group 30 in which a plurality of single batteries 31 have been laminated and a pair of end plates 40 that are respectively disposed at both ends of the battery group 30 in a lamination direction, an installation portion in which the battery main body 20 is installed, and brackets 50 that fix the battery main body 20 to the installation portion, and the brackets 50 hold the battery main body 20 in a state of being pressurized in the lamination direction.

Pouch-Type Battery Case and Method for Manufacturing the Same, and Method for Manufacturing Secondary Battery

Resumen de: US20260331647A1

A pouch-type battery case including a cup part having a recessed shape; and a gas pocket part disposed at one side of the cup part and having a recessed shape is provided. A wrinkle part folds or unfolds so that a depth of the gas pocket part varies depending on an internal pressure of the gas pocket part may be defined on a circumferential portion of the gas pocket part. The wrinkle part may include: a convex portion protruding to the outside of the gas pocket part; and a concave portion which is alternately disposed with the convex portion in a depth direction of the gas pocket part. A remaining thickness of the convex portion may be less than a remaining thickness of the concave portion.

Temperature-Based Battery-Charging-Profile Architectures and Applications Thereof

Resumen de: US20260331942A1

0000 The present document describes techniques associated with temperature-based battery-charging-profile architectures and applications thereof. Although advances in battery chemistries may enable batteries to be charged at temperatures that are higher or lower than the limits of conventional-battery chemistries (e.g., 0 °C to 60 °C), conventional hardware is generally restricted (e.g., hardcoded) to those limits. However, the temperature-based battery-charging-profile architectures and applications thereof, as described herein, provide a low-cost solution for conventional battery-charging hardware to be able to charge batteries with battery chemistries having expanded charging limits. The techniques described herein enable charging of batteries at temperatures that are outside of the standard JEITA mask by utilizing a switching mechanism operated by a controller that switches, based on the battery temperature, to a different charge profile with a reduced charge rate at a reduced voltage and/or current without affecting the JEITA mask.

POLYMER ELECTROLYTE AND SECONDARY BATTERY

Resumen de: US20260331578A1

A polymer electrolyte exhibits high mechanical strength even at high temperatures, and high ionic conductivity, and can minimize the occurrence of dendrites at the interface between a polymer electrolyte and a battery negative electrode. The polymer electrolyte contains a polymer having a specific free terminal polyether structure, a specific polyether cross-linked structure, and a specific fluorine sulfonylimide anionic group, the polymer electrolyte contains a specific amount of a specific alkali metal salt, and the volume swelling ratio of the polymer electrolyte determined by a methyl ethyl ketone immersion method is 30% to 120%.

AEROSOL-GENERATING DEVICE

Resumen de: US20260324717A1

An aerosol-generating device according to an embodiment includes a main body including a first connection terminal on a bottom surface thereof, and a battery removably coupled to the main body and including a first battery terminal connected to the first connection terminal on a first surface facing the bottom surface, wherein the battery has a cross-sectional shape matching a cross-sectional shape of the main body, extends in a longitudinal direction of the main body, and forms an outer circumferential surface of the aerosol-generating device together with the main body.

CATHODE ACTIVE MATERIAL FOR LITHIUM SECONDARY BATTERY, MANUFACTURING METHOD OF SAME, AND LITHIUM SECONDARY BATTERY COMPRISING SAME

Resumen de: US20260331491A1

The present invention relates to a positive electrode active material for a lithium secondary battery, the positive electrode active material comprising a single-particle lithium transition metal oxide containing from 50 mol % to 70 mol % of nickel based on a total moles of transition metals, and satisfying Equation 1 below.Dv50/Dn50≥3.0  Equation 1 In Equation 1, Dv50 is a volume-based average particle diameter of the positive electrode active material, and Dn50 is a number-based average particle diameter of the positive electrode active material.

AEROSOL-GENERATING DEVICE

Resumen de: US20260324755A1

An aerosol-generating device includes an aerosol generator configured to generate an aerosol, a main body in which the aerosol generator is arranged, and a battery pack including a battery configured to supply power to the aerosol generator and a battery case accommodating the battery, wherein one of the main body and the battery pack includes a hook protrusion maintaining a position of the battery pack with respect to the main body, the other one of the main body and the battery pack includes a hook groove into which the hook protrusion is coupled, and the battery pack is detachably coupled to the main body by a sliding movement with respect to the main body.

LID-DISASSEMBLING DEVICE AND BATTERY ELECTROLYTE INJECTION APPARATUS

Resumen de: US20260331737A1

0000 The disclosure provides a lid-disassembling device and a battery electrolyte injection apparatus. The lid-disassembling device comprises a rack and a conveying mechanism. The conveying mechanism comprises a baseplate, a lifting assembly, and a gripping assembly and a plurality of blocking assemblies. The gripping assembly may first be driven by the lifting assembly to move downward, and the upper lid is then clamped by the gripping assembly. While the gripping assembly clamps the upper lid, the plugs of the plurality of blocking assemblies may respectively enter the plurality of injection cups and block the liquid-draining holes of the injection cups. Then, the gripping assembly is moved upward under the drive of the lifting assembly to remove the upper lid from the pallet and thus separate the injection cup from the battery.

ELECTROLYTE SOLUTION FOR LITHIUM SECONDARY BATTERY AND LITHIUM SECONDARY BATTERY COMPRISING THE SAME

Resumen de: US20260331580A1

An electrolyte solution for a lithium-sulfur battery and a lithium secondary battery comprising the same are provided. The electrolyte solution includes a nonaqueous solvent, a lithium salt, a nitrate salt, and an aryl derivative, wherein the nonaqueous solvent includes a linear ether compound and a conjugated heterocyclic compound, and the aryl derivative includes a thiolate compound, a thiol compound, a disulfide compound, or a mixture of two or more thereof, wherein each of R1 to R4 is independently a 5- or 6-membered heteroaryl containing at least one N or S atom as a ring atom, and the electrolyte solution is capable of effectively suppressing capacity fading over repeated charge and discharge cycles of the lithium secondary battery.

NONAQUEOUS ELECTROLYTE SECONDARY BATTERY

Resumen de: US20260331517A1

0000 With respect to a nonaqueous electrolyte secondary battery according to the present disclosure, the positive electrode contains a lithium-containing composite oxide and a sulfonic acid compound that is present on the particle surfaces of the lithium-containing composite oxide; the sulfonic acid compound is represented by formula (I); the negative electrode comprises a negative electrode core body, a first negative electrode mixture layer that is arranged on the surface of the core body, and a second negative electrode mixture layer that is arranged on the surface of the first negative electrode mixture layer; the thickness T1 of the first negative electrode mixture layer and the thickness T2 of the second negative electrode mixture layer satisfy the relational expression 0.1≤T1/(T1+T2)≤0.9; the first negative electrode mixture layer and the second negative electrode mixture layer each contain a negative electrode active material and a binder; the binder content CI in the first negative electrode mixture layer and the binder content C2 in the second negative electrode mixture layer satisfy the relational expression C1>C2. (In the formula, A represents a group 1 element or a group 2 element, R represents a hydrocarbon group; and n is 1 or 2.) 0000

CATHODE ACTIVE MATERIAL FOR LITHIUM SECONDARY BATTERY, MANUFACTURING METHOD THEREFOR, AND LITHIUM SECONDARY BATTERY COMPRISING SAME

Resumen de: US20260331487A1

0000 The present invention relates to a positive electrode active material for a lithium rechargeable battery, which is a lithium transition metal oxide containing nickel (Ni) and manganese (Mn), wherein the lithium transition metal oxide may be a single particle and has a crystal defect rate of less than 3%.

BATTERY PACK AND VEHICLE INCLUDING THE SAME

Resumen de: US20260331698A1

A battery pack and a vehicle including the same are provided. The battery pack is configured to improve energy density and ensure structural stability even when a thermal event occurs. The battery pack includes a cell assembly, a cell case accommodating the cell assembly, the cell case including an open portion at least at one side thereof, and a pack housing to which the cell case is coupled, the pack housing including a venting path facing the open portion.

NEGATIVE ELECTRODE FOR SECONDARY BATTERIES, SECONDARY BATTERY, AND METHOD FOR PRODUCING NEGATIVE ELECTRODE FOR SECONDARY BATTERIES

Resumen de: US20260331464A1

0000 A negative electrode for secondary batteries according to one embodiment of the present disclosure is characterized by comprising a negative electrode current collector and a negative electrode mixture layer that is arranged on the negative electrode current collector, and is also characterized in that: the negative electrode mixture layer contains a binder and a negative electrode active material that contains a carbon material and an Si-based material; the pore size distribution of the negative electrode mixture layer as determined by a mercury intrusion method has two peak values R1 and R2; the peak value RI is within the range of 0.5 μm to 1.5 μm; the peak value R2 is within the range of 2 μm to 10 μm; and the content of the binder contained in the negative electrode mixture layer is 4% by mass or more with respect to the total mass of the negative electrode active material.

Battery Pack and Device Including the Same

Resumen de: US20260331655A1

A battery pack includes a plurality of cell units each including at least one battery cell and a cell cover surrounding and supporting the at least one battery cell and a pack case accommodating and supporting the plurality of cell units in an internal space, wherein the cell cover includes: a first cover portion covering one side of the at least one battery cell, a second cover portion covering the other side of the at least one battery cell, and a cap portion connecting the first cover portion to the second cover portion and covering an upper end portion of the at least one battery cell, wherein the cap portion is detachably coupled to the first cover portion and the second cover portion.

AEROSOL-GENERATING DEVICE

Resumen de: US20260324736A1

0000 An aerosol generating device according to an embodiment includes a housing including a first accommodation space for accommodating an aerosol generating article, a second accommodation space for accommodating a cartridge in which an aerosol generating material is stored, and a battery accommodation space, a first airflow passage arranged inside the housing and connecting the first accommodation space and the second accommodation space to each other, a first heat dissipation member arranged between the first airflow passage and the battery accommodation space to absorb heat inside the battery accommodation space, and a battery detachably coupled to the battery accommodation space.

BATTERY PACK

Resumen de: US20260331675A1

0000 A battery pack may include a cell unit including a plurality of battery cells, a base plate supporting a bottom surface of the cell unit, a cell unit fixative interposed between the cell unit and the base plate, and including a structural adhesive applied to a portion of the bottom surface of the cell unit and a non-curable filler applied to a remaining portion of the bottom surface of the cell unit, and a cell lower part panel interposed between the base plate and the cell unit fixative. The cell lower part panel may be removably fastened to the base plate to which the cell unit is adhered and fixed by the structural adhesive.

Current Collector, Application of Current Collector, Secondary Battery, Battery Module, Battery Pack, and Electrical Device

Resumen de: US20260331521A1

This application provides a current collector, an application of the current collector, a secondary battery, a battery module, a battery pack, and an electrical device. An undercoat is formed on a surface of the current collector. The undercoat includes a carbon nanomaterial. The carbon nanomaterial includes at least two selected from a zero-dimensional carbon material, a one-dimensional carbon material, or a two-dimensional carbon material. The undercoat is conducive to reducing a nucleation overpotential in metal ion deposition, and can effectively induce uniform deposition of metal ions, regulate the metal ion deposition, effectively suppress dendrite growth of the metal ions, and improve cycle performance and safety of the battery.

BINDER COMPOSITION FOR ALL-SOLID-STATE SECONDARY BATTERY, SLURRY COMPOSITION FOR ALL-SOLID-STATE SECONDARY BATTERY, SOLID ELECTROLYTE-CONTAINING LAYER, AND ALL-SOLID-STATE SECONDARY BATTERY

Resumen de: US20260331506A1

0000 The binder composition for an all-solid-state secondary battery in which a sulfide inorganic solid electrolyte is used contains a polymer including a (meth)acrylic acid alkyl ester monomer unit and an acetic acid ester solvent in which a hydrocarbon group having a carbon number of 6 to 9 is bonded to a non-carbonyl oxygen atom. The (meth)acrylic acid alkyl ester monomer unit includes a first (meth)acrylic acid alkyl ester monomer unit in which an alkyl group having a carbon number of 3 to 8 is bonded to a non-carbonyl oxygen atom and a second (meth)acrylic acid alkyl ester monomer unit in which an alkyl group having a carbon number of 1 to 2 is bonded to a non-carbonyl oxygen atom. A mass ratio of the first (meth)acrylic acid alkyl ester monomer unit relative to the second (meth)acrylic acid alkyl ester monomer unit is 2.1 to 2.5.

LITHIUM SECONDARY BATTERY

Nº publicación: US20260331473A1 22/10/2026

Solicitante:

LG ENERGY SOLUTION LTD [KR]
LG ENERGY SOLUTION, LTD.

Resumen de: US20260331473A1

A lithium secondary battery is provided, having a silicon-based negative electrode, a positive electrode, a separator; and an electrolyte, wherein the positive electrode or silicon-based negative electrode is a pre-lithiated electrode, and wherein the silicon-based negative electrode has a certain silicon discharge capacity use range, and certain upper and lower ends of the silicon discharge capacity.