Battery storage

FREE STANDING 3D ANODE ARRANGEMENT HAVING CONTINUOUS ION-CONDUCTING SHELL OR CAGE

Absstract of: US2024290942A1

Current collectors are critical components of conventional electrochemical cell design, and serve to conduct electricity generated within the electrochemical cell to an external environment of the electrochemical cell, typically to a machine or device electrically coupled to the electrochemical cell, e.g. via a plurality of leads, tabs, contacts, terminals, etc. Accordingly, current collectors conventionally comprise one or more highly electrically conductive (and, optionally, thermally conductive) materials, most often metal(s) or alloy(s) of iron, nickel, copper, etc. As a result, current collectors often represent a substantial contribution to the total mass of the electrochemical cell, and undesirably reduce the power-to-weight ratio of the resulting battery. The presently disclosed inventive concepts include various configurations of free-standing electrodes that do not require a distinct current collector component to efficiently conduct electricity to external devices, and include unique compositions and structural arrangements that collectively convey substantial performance improvements on electrochemical cells implementing the same.

A Nano Silicon-Oxygen-Carbon Structural Composite Material, A Preparation Method Thereof, An Anode, And An Electrochemical Device

Absstract of: US2024290956A1

The present disclosure provides a nano silicon-oxygen-carbon structural composite material, a preparation method thereof, an anode, and an electrochemical device. The composite material includes (Cx1—Oy1)—(Siz—Oy2—Cx2), wherein Cx1—Oy1 is a porous carbon substrate containing a surface oxidized layer, and 0.001≤y1/x1≤0.05; Siz—Oy2—Cx2 includes silicon nanoparticles, an oxygen-containing substance and an optional carbon, wherein the silicon nanoparticles, the oxygen-containing substance and the optional carbon are dispersedly distributed on the surface and/or within the pores of the porous carbon substrate containing a surface oxidized layer, and the oxygen-containing substance presents in a form of SiOδ, wherein 0≤δ≤2, 0.1≤z/x1≤2, 0.01≤y2/z≤0.15, and 0≤x2/z≤0.15. The silicon nanoparticles are uniformly dispersed in the composite material, separated and bounded by the oxygen-containing substance and the optional carbon, controlling their volume changes and possible fusion during charge and discharge cycles, thereby improving the cycle performance of lithium batteries.

BATTERY AND BATTERY WITH SPRING PLATE

Absstract of: US2024291017A1

A battery including a housing, a plurality of battery cells in the housing, and a spring plate providing a biasing force against the plurality of battery cells. The spring plate is configured such that a tension of the spring plate may be adjusted from outside of the housing.

BATTERY PACK

Absstract of: US2024291051A1

A battery pack includes a case, an electrode assembly accommodated in the case, and a protection circuit module connected to the electrode assembly, wherein the protection circuit module includes, a substrate, one or more component mounting areas with a plurality of components, and one or more coating areas, at least some of which have different heights from a top surface of the substrate.

MICRO-ARCHITECTED FLOW THROUGH ELECTRODES FOR ENERGY STORAGE

Absstract of: US2024291073A1

Electrochemical reactors with electrodes that have variable porosity across the electrode and associated methods are described. The electrodes are designed and micro-architected to have variable porosity and 3D flow. One example method of selecting porosities in an electrochemical reactor includes dividing an electrode of the electrochemical reactor into a plurality of unit cells and determining a plurality of cell-specific porosities for the plurality of unit cells as a function of a location for each of the plurality of unit cells. The cell-specific porosities are configured based on a rod diameter of each unit cell's internal structure relative to each unit cell's cell length, and each location in the electrode provides a selected fluid flow property and a selected conductive property to meet one or more performance metrics.

ELECTROLYTE CHEMICAL FORMULATIONS INCORPORATING POLYMERS

Absstract of: US2024291049A1

The present invention discloses methods and materials to add a polymer material to a liquified gas electrolyte solution for use in an electrochemical energy storage device such as a lithium-ion battery or related technology to further improve the battery cell's safety properties. An example device includes an ionically conducting electrolyte comprised of a liquefied gas solvent, a salt, and a polymer. The liquefied gas solvent has a vapor pressure above 100 kPa at a temperature of 293.15 K, and the polymer is at low enough concentration that it is fully dissolved in the liquefied gas solvent. The device may include an anode, a cathode, and a separator layer in contact with the ionically conducting electrolyte. A housing may enclose the ionically conducting electrolyte, the anode, the cathode and the separator layer.

SOLID ELECTROLYTE AND ALL-SOLID-STATE BATTERY INCLUDING THE SAME

Absstract of: US2024291023A1

The present disclosure relates to a solid electrolyte and an all-solid-state battery including the same. Specifically, provided are an oxide of a specific component system as a solid electrolyte (first solid electrolyte) and a solid electrolyte (second solid electrolyte) further including an oxide or salt of another component system as a second component while including the oxide of the specific component system as a first component.

BATTERY SYSTEM AND SLAVE BATTERY MANAGEMENT SYSTEM

Absstract of: US2024291052A1

The present invention includes a battery system including a battery pack having a metal housing capable of accommodating a plurality of battery modules, a plurality of slave battery management systems configured to manage the plurality of battery modules, and a master battery management system installed outside the metal housing to wirelessly communicate with a first battery management system among the plurality of slave battery management systems, wherein the first slave battery management system which communicates with the master battery management system is installed at a boundary of the metal housing so as not to be shielded with the metal housing.

BATTERY ELECTRODE MANUFACTURING DEVICE AND BATTERY ELECTRODE MANUFACTURING METHOD

Absstract of: US2024291016A1

The battery electrode manufacturing device comprises: a film supply unit that supplies a film to an active material, wherein the active material has been stacked on a strip-shaped base film, wherein the active material is conveyed along a conveying direction in a chamber whose interior is decompressed below atmospheric pressure; and a compression unit that compresses the active material, which has been supplied on the base film, via the film.

POSITIVE ELECTRODE AND ELECTROCHEMICAL APPARATUS AND ELECTRONIC APPARATUS USING SAME

Absstract of: US2024290977A1

A positive electrode including a first positive electrode active material and a second positive electrode active material, where the first positive electrode active material is sulfurized polyacrylonitrile with a sulfur percentage of 45 wt % to 60 wt %, and the second positive electrode active material is sulfurized polyacrylonitrile with a sulfur percentage of 30 wt % to 40 wt %. The positive electrode increases energy density and energy density retention rate of the electrochemical apparatus.

Electrode and Electrochemical Storage Cell

Absstract of: US2024290991A1

An electrode for an electrochemical storage cell is provided. The electrode includes a conductor foil having an application area and a contacting area, wherein an electrode coating is applied in the application area, and wherein the conductor foil is at least partially porous in the contacting region and not porous in the application are. Also, an electrochemical storage cell is specified.

COATED CATHODE ACTIVE MATERIAL PARTICLES FOR LITHIUM-ION BATTERIES, CATHODE FOR LITHIUM-ION BATTERIES, METHOD OF PRODUCING COATED CATHODE ACTIVE MATERIAL PARTICLES FOR LITHIUM-ION BATTERIES, AND LITHIUM-ION BATTERY

Absstract of: US2024290955A1

Coated electrode active material particles for lithium-ion batteries, that can suppress side reactions between the electrolytic solution and the coated electrode active materials, and that can prevent the internal resistance value of lithium-ion batteries from increasing, can be provided. The coated cathode active material particles for lithium-ion batteries in which at least a part of the surface of the cathode active material particles is coated with a coating layer, wherein the coating layer contains a polymer compound, a conductive assistant, and ceramic particles, and wherein the BET specific surface area of the ceramic particles is 70 to 300 m2/g.

BATTERY PACK AND ELECTRICAL DEVICE

Absstract of: US2024290944A1

Provided is a battery pack. The battery pack includes a first battery cell, a second battery cell, and a third battery cell. A positive electrode active substance of each battery cell is composed of lithium iron phosphate and a low-temperature additive. The low-temperature additive is selected from compounds containing at least two carbonyl groups, which are conjugated with an unsaturated structure or an atom having lone-pair electrons connected with the carbonyl groups. At a temperature lower than or equal to 10° C., a ratio of a discharging capacity of a single cell of the second battery cell to a discharging capacity of a single cell of the first battery cell ranges from 1.003 to 1.12, and a ratio of a discharging capacity of a single cell of the third battery cell to a discharging capacity of a single cell of the second battery cell ranges from 1.005 to 1.15.

SOLID ELECTROLYTE WITH PROTRUSION AND ALL SOLID-STATE BATTERIES COMPRISING SAME

Absstract of: US2024291028A1

A cell assembly has a plurality of first electrodes, a plurality of second electrodes and a plurality of solid electrolyte layers. The solid electrolyte layers have a protrusion in at least one of the solid electrolyte layers. The protrusion is aligned with a first electrode tab of one of the first electrodes. The folding of the first electrode tabs causes the protrusions to be positioned to separate the first electrode tabs from the second electrodes, thus preventing short circuit between the first electrode tabs and second electrodes. In one aspect, the disclosure provides an all solid-state battery comprising one or more anodes, one or more cathodes and one or more solid electrolyte layers with a protrusion. Also disclosed is a method for preparing same.

TEMPERATURE-REGULATING DEVICE

Absstract of: US2024291071A1

A temperature-regulating device for electronic or electrical components which can release heat when in operation is disclosed. The temperature-regulating device includes a housing which is configured to accommodate the electrical or electronic components. The temperature-regulating device also includes means for regulating the temperature of the components with a dielectric fluid which is able to immerse the components at least partly. The temperature-regulating means include firstly a heat exchanger through which the dielectric fluid can pass and a heat transfer fluid. The heat exchanger includes at least one dielectric fluid input and one dielectric fluid output. The temperature regulating means further includes a system for distribution of the dielectric fluid which is positioned at the dielectric fluid output of the heat exchanger and at least two dielectric fluid spraying orifices.

DRY ELECTRODE MANUFACTURE BY TEMPERATURE ACTIVATION METHOD

Absstract of: US2024290940A1

A method of manufacturing a free-standing electrode film includes preparing a mixture including an electrode active material, a conductive material, and a binder, heating the mixture to 70° C. or higher, subjecting the mixture to a shear force, and, after the mixture has been subjected to the shear force, pressing the mixture into a free-standing film. The method may further include adding a solvent to the mixture. A resulting free-standing electrode film may include an amount of binder less than 4% by weight.

NONAQUEOUS ELECTROLYTE SOLUTION SECONDARY BATTERY

Absstract of: US2024291046A1

A nonaqueous electrolyte solution secondary battery disclosed herein includes a wound electrode body including a positive electrode with a band shape and a negative electrode with a band shape. The negative electrode includes a negative electrode active material layer. The negative electrode active material layer includes a first high-resistance region extending from one end part toward a central part in a winding axis direction and having a resistance value that is 1.5 times or more higher than that in a periphery. When a length of the negative electrode active material layer is La and a length of the first high-resistance region is L1 in the winding axis direction, a ratio (L1/La) of the length L1 to the length La is 0.35 or less.

NONAQUEOUS ELECTROLYTE SECONDARY BATTERY

Absstract of: US2024290966A1

A nonaqueous electrolyte secondary battery includes a positive electrode, a negative electrode, and a nonaqueous electrolyte. The positive electrode includes a positive electrode active material, the positive electrode active material includes a lithium-transition metal composite oxide containing Ni, Mn, and Al, and the proportions of Ni, Mn, and Al in metal elements other than Li contained in the lithium-transition metal composite oxide are, respectively, Ni: 50 atm % or more, Mn: 10 atm % or less, and Al: 10 atm % or less. When the lithium-transition metal composite oxide contains Co, the proportion of Co in the metal dements other than Li is 1.5 atm % or less. The nonaqueous electrolyte includes an organophosphorus compound represented by a general formula (1). In the general formula (1), R1 and R2 are each independently an alkyl group with 1 to 4 carbon atoms, and R3 is a fluorinated alkyl group with 1 to 4 carbon atoms.

ANODE, AND ELECTROCHEMICAL DEVICE COMPRISING THE SAME

Absstract of: US2024290959A1

An anode including a current collector and an anode active material layer disposed on the current collector are provided. The anode active material layer includes first oriented particles having a first tilt angle θ1 inclined with respect to the direction parallel to the current collector, and second oriented particles having a second tilt angle θ2 inclined with respect to the direction parallel to the current collector. The first tilt angle θ1 and the second tilt angle θ2 are different and both not greater than 70°.

NEGATIVE ELECTRODE FOR LITHIUM SECONDARY BATTERY, METHOD FOR MANUFACTURING NEGATIVE ELECTRODE FOR LITHIUM SECONDARY BATTERY, AND LITHIUM SECONDARY BATTERY COMPRISING NEGATIVE ELECTRODE

Absstract of: US2024290954A1

A negative electrode for a lithium secondary battery, a method for preparing a negative electrode for a lithium secondary battery, and a lithium secondary battery including the negative electrode are disclosed. A negative electrode for a lithium secondary battery, including a negative electrode current collector layer; and a negative electrode active material layer on the negative electrode current collector layer. The negative electrode active material layer comprises a negative electrode composition comprising a silicon-containing active material, a negative electrode conductive material, and a negative electrode binder, the silicon-containing active material comprises silicon-containing particles having a particle diameter distribution of 0.01 μm or more and 30 μm or less. The negative electrode active material layer comprises a lower layer portion comprising a surface facing the negative electrode current collector layer and an upper layer portion comprising a surface opposite to the surface facing the negative electrode current collector layer.

LITHIUM-ION BATTERY AND ELECTROCHEMICAL DEVICE CONTAINING SAME

Absstract of: US2024291037A1

A lithium-ion battery includes an electrolytic solution and a negative electrode plate. The electrolytic solution includes vinylene carbonate and fluoroethylene carbonate. The negative electrode plate includes a negative active material. An OI value of the negative active material is a. Based on a weight of the electrolytic solution, a weight percent of the vinylene carbonate is b %, and a weight percent of the fluoroethylene carbonate is c %; and a, b, and c satisfy: 0.3≤a/(b+c)≤6; 0.02≤b+c≤10; and 0.1