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1397
resultados
Última actualización
15/12/2025 [07:10:00]
Resultados 75 a 100 de 1397
Resumen de: US2025379328A1
A battery pack case of the present disclosure includes a base plate forming a surface of the battery pack case and having a through-hole formed to communicate an internal space of the battery pack case with an outside, an external plate spaced apart from an outer surface of the base plate and configured to block the through-hole from being exposed to the outside and to define a separation space between the base plate and the external plate, and a venting valve provided on the external plate to selectively discharge a fluid from the separation space.
Resumen de: US2025379330A1
Discussed is a battery pack including a battery cell stack having a plurality of battery cells stacked in a first direction, a barrier layer disposed on the battery cell stack, the barrier layer having an inner surface facing the battery cell stack, a first refractory part positioned on an outer surface of the barrier layer that is opposite to the inner surface of the barrier layer, and a venting part that extends through the first refractory part. The barrier layer is configured to be fractured or melted from pressure or heat generated in the battery cell stack to open the venting part to allow at least one of heat, gas and flames to pass from the battery cell stack through the venting part. The first refractory part is at the barrier layer.
Resumen de: US2025379327A1
The present disclosure provides a battery pack, etc. that can ensure excellent safety when a thermal event occurs. A battery pack according to one aspect of the present disclosure may include a plurality of battery cells each having an electrode lead; a cell cover configured to at least partially surround at least some of the plurality of battery cells; and a busbar frame assembly configured to be electrically connected to the electrode lead and coupled to at least one side of a cell cover, thereby blocking flame discharge in a particular direction.
Resumen de: US2025379228A1
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: US2025379295A1
A pouch-type battery case accommodates an electrode assembly having a electrodes and separators are alternately arranged, the battery case comprises a pouch film having a film thickness, a first surface and a second surface, a first cup portion formed in the pouch film having a recessed shape offset from the first surface towards the second surface; a second cup portion formed in the pouch film having a recessed shape offset from the first surface towards the second surface; and a bridge portion formed in the pouch film between the first cup portion and the second cup portion and connecting the first cup portion to the second cup portion; the bridge portion includes a notch formed in the first surface projecting towards the second surface.
Resumen de: US2025379254A1
A battery includes a negative electrode plate, a positive electrode plate and an electrolyte solution. The negative electrode plate includes a negative electrode active material layer, which includes a silicon carbon; a surface of the negative electrode active material layer has recesses; the electrolyte solution includes a carbonate compound, and the carbonate compound comprises fluoroethylene carbonate; and a charged cut-off voltage of the battery is greater than or equal to 4.48 V. The battery not only exhibits high energy density but also significantly mitigates the problem of damage and corner cracking of the outer film casing in the later stages of battery cycling.
Resumen de: US2025379272A1
A method for detecting battery swelling includes: arranging conductors in a region of a battery cell to detect swelling of the battery cell; measuring a capacitance change amount when an arrangement of the conductors changes; and determining whether or not battery swelling has occurred by using a result of the measuring of the capacitance change amount.
Resumen de: US2025379255A1
An electrolyte, a lithium-ion battery including the electrolyte, and an electric device including the lithium-ion battery, where the electrolyte includes metal ions, and the metal ions include at least one of K+, Rb+, and Cs+; where a molar concentration CM of the metal ions in the electrolyte satisfies: 0.03 M≤CM.
Resumen de: US2025379253A1
An electrolyte including a compound of Formula I-A, a compound of Formula I-B, and a compound of Formula I-C:where based on a mass of the electrolyte, a percentage of the compound of Formula I-A ranges from 0.12% to 5.0%; a percentage of the compound of Formula I-B ranges from 0.12% to 5.0%; and a percentage of the compound of Formula I-C ranges from 0.12% to 3.0%.
Resumen de: WO2025253527A1
A contact pressure application unit (67) applies contact pressure to a plurality of cells. A contact pressure information acquisition unit (61) acquires contact pressure information indicating a cell contact pressure that is the contact pressure applied to the plurality of cells. A temperature information acquisition unit (62) acquires temperature information indicating a cell temperature that is the temperature of the plurality of cells. A voltage value information acquisition unit (63) acquires voltage value information indicating a cell voltage value that is a voltage value for the plurality of cells. A contact pressure determination unit (66) determines the cell contact pressure to be applied to the plurality of cells such that the current value of a circulating current determined from the cell contact pressure, the cell temperature, and the cell voltage value is at or below a maximum allowable current value determined from the cell temperature when the charging state of a plurality of modules is adjusted by the circulating current.
Resumen de: WO2025253530A1
This solid-state battery system (1) comprises: a solid-state battery module (10) obtained by stacking one or more battery cells (11) having a positive electrode layer, a negative electrode layer, and a solid electrolyte layer disposed between the positive electrode layer and the negative electrode layer; a surface pressure measurement device (20) that measures the surface pressure distribution of the solid-state battery module (10); and a control unit (100) that controls the charging and discharging of the solid-state battery module (10). If the difference in the surface pressure between a low-surface pressure section having a low surface pressure and a high-surface pressure section having a high surface pressure in the surface pressure distribution of the solid-state battery module (10) is detected to be equal to or greater than a first threshold value when the surface pressure distribution is measured by the surface pressure measurement device (20), the control unit (100) performs discharging at a reference current value or higher.
Resumen de: WO2025253462A1
In a heat exchanger 10, a supply pipe part 15 and a discharge pipe part 16 are provided at asymmetric positions with respect to a central axis in the width direction. The heat exchanger 10 has two or more upstream-side flow paths R1a, R1b, R1c, R1d, R1e extending along the central axis, two or more downstream-side flow paths R1f, R1g, R1h, R1i, R1j extending along the central axis, and a first aggregation flow path R1k.
Resumen de: WO2025253642A1
A cell balancing device (1) according to the present embodiment comprises, with respect to the entirety of N-number of cells (20) connected in series: one transformer (T); one switching element (112); one current detector (113); N-number of rectifying elements (122); and one control unit (13). The control unit (13) causes the switching element (112) to perform on/off operations by outputting a PWM signal to the switching element (112), and in particular, when the current value of the current detected by the current detector (113) exceeds a predetermined upper limit threshold (TH), the control unit (13) sets the PWM signal to an off-level.
Resumen de: WO2025251350A1
The present application belongs to the technical field of secondary batteries. Provided are a nickel-manganese-based sodium-ion battery positive electrode material and a preparation method therefor, and a positive electrode sheet and a sodium-ion battery. The positive electrode material for a nickel-manganese-based sodium-ion battery is represented by the general formula NacNiaMnbO2, wherein a+b=1.0, 0.4≤a≤0.6, 0.4≤b≤0.6, and 0.67≤c≤1.0. The positive electrode material for a nickel-manganese-based sodium-ion battery is made of secondary particles formed by stacking primary particles. The primary particles are sheet-shaped particles, and the secondary particles are spherical particles, which having a discharge specific capacity of ≥115 mAh·g-1. The sodium-ion battery prepared from the positive electrode material for a nickel-manganese-based sodium-ion battery provided in the present application has a good cycling life and energy density, which facilitates the broadening of the application field of sodium-ion batteries.
Resumen de: WO2025251231A1
The present application discloses an energy storage device, comprising a first housing, a first separator, a battery module, and an electrical module. The first separator is connected to the first housing, and the first separator divides the first housing into a first chamber and a second chamber arranged in a first direction. The battery module is located in one of the first chamber and the second chamber. The electrical module is located in the other one of the first chamber and the second chamber, and the electrical module is electrically connected to the battery module. The electrical module and the battery module are located in different chambers, so that heat generated by the electrical module is separated from heat generated by the battery module, thereby facilitating improvement of heat dissipation of the battery module.
Resumen de: WO2025251224A1
The present invention relates to the technical field of lithium-ion batteries, and in particular to a copper foil and a preparation method therefor, a negative electrode comprising same, and a lithium-ion battery. The copper foil comprises ultra-fine grains and nanotwins, and has an average grain size of 0.2-0.4 μm and an area-weighted average grain size of 0.3-0.8 μm, wherein the proportion of the nanotwins in the copper foil is greater than 50%. The copper foil is prepared by means of a pulse electroplating technique, which can control the average grain size and the proportion of nanotwins in the copper foil, thereby making the copper foil have high tensile strength and a high elongation rate. Moreover, a specific electrolyte is used in the preparation method, enabling the tensile strength of the copper foil to reach 600-900 MPa and the elongation rate thereof to be greater than 5%. Applying the copper foil to a lithium-ion battery can reduce the volume expansion rate of a negative electrode material after charging and discharging cycles, prevent the copper foil from cracking due to repeated volume changes during the charging and discharging processes of the negative electrode material, prolong the cycle life of the battery and improve the safety of the battery.
Resumen de: US2025379325A1
A venting cover for a battery module, the venting cover configured to be coupled to one side surface of the battery module and cover the battery module. The venting cover includes venting channels. Each venting channel includes a channel shape extending in a longitudinal direction, an inflow hole configured to be directed toward a battery cell embedded in the battery module, a discharge hole located at an end of the each venting channel, each venting channel being configured such that a venting material vented from the battery cell is introduced into the inflow holes, flows in the longitudinal direction, and is discharged through the discharge holes, and a support channel located between adjacent venting channels of the plurality of venting channels, each support channel extending in the longitudinal direction, and having a closed cross-section, each support channel being configured to support the venting channels.
Resumen de: US2025379324A1
A battery, an electrical device, and an energy storage device. The battery includes: a battery cell, a first wall of the battery cell being provided with a pressure relief mechanism; an attachment component, a first surface of the attachment component being attached to the first wall by an adhesive; an isolation component connected to the attachment component and configured to prevent the adhesive from being applied between the attachment component and the pressure relief mechanism; and a protective component connected to a surface of the isolation component facing away from the pressure relief mechanism to protect the isolation component; where the attachment component is provided with a first through hole corresponding to the position of the pressure relief mechanism.
Resumen de: US2025379323A1
A cover assembly for a battery module including a cover frame configured to be coupled to one opened side of a battery module casing and to close the opened side of the battery module casing, the cover frame including a plurality of hollow portions extending in a longitudinal direction, and a plurality of venting holes at locations that overlap the plurality of hollow portions, the plurality of venting holes being configured to penetrate the cover frame in a direction toward an inside of the battery module casing, and at least one venting part inserted into a first hollow portion and configured to close a respective venting hole of the plurality of venting holes, each at least one venting part having a portion that corresponds to the respective venting hole, each at least one venting part being configured to be opened when gas or flame is generated in the battery module.
Resumen de: US2025379320A1
Provided are a battery module, and a battery pack and a vehicle including the same. The battery module includes a plurality of pouch-type battery cells, a module case in which the plurality of pouch-type battery cells are accommodated and a venting hole is formed, and a cell cover at least partially surrounding and supporting at least some of the plurality of pouch-type battery cells, in an inner space of the module case, wherein at least a portion of the cell cover is inserted into the venting hole.
Resumen de: US2025379222A1
A disclosed hydrogen-absorbing alloy has a composition represented by a formula LaaR(b-a)MgcZrdNixAlyMz, wherein R is at least one rare earth element including Y but not including La, 0.10≤a≤0.40, 0.67≤b≤0.96, 0.01≤c≤0.30, 0.01≤d≤0.05, and b+c+d=1.00 are satisfied, M is at least one element selected from the group consisting of Co, Mn, Ag, and Sn, 3.10≤x≤3.80, 0.03 ≤y≤0.25, 0≤z≤0.05, and 3.45≤x+y+z≤3.85 are satisfied, and the alloy includes, as crystal phases, four phases respectively having a Ce2Ni7 type structure, a Ce5Co19 type structure, a Pr5Co19 type structure, and a CaCu5 type structure, at specific proportions.
Resumen de: US2025379221A1
A negative electrode active material and a preparation method therefore, and a related device are disclosed. The negative electrode active material comprises a negative electrode active substance and a coating layer. The coating layer is coated on the surface of the negative electrode active substance, and the coating layer comprises at least one of polymethyl methacrylate, sodium maleate, and oleic acid diethanolamide borate. The cycle performance and the initial coulombic efficiency of batteries are improved.
Resumen de: US2025379271A1
A battery system may include a battery pack including a plurality of battery cells, a flexible printed circuit board (FPCB) located on an upper surface of the battery pack and including a first wiring connected to a terminal of the battery pack and a second wiring arranged along a path passing through upper portions of each of the plurality of battery cells, and a battery management system (BMS) including a logic gate that is driven by a first voltage provided from the battery pack through the first wiring and generates an output according to a second voltage provided through the second wiring. Further, the BMS may be configured to determine whether the battery pack is abnormal according to the output of the logic gate.
Resumen de: US2025379227A1
Electrodes having electrolyte additives and electrochemical cells that cycle lithium ions and include the electrodes are provided. The electrodes include a lithium-rich, manganese-rich layered oxide electroactive material, and an electrolyte including two or more electrolyte additives selected from the group consisting of: a lithium salt additive, a fluorinated ester-based additive, a silicon-based additive, and combinations thereof.
Nº publicación: US2025379292A1 11/12/2025
Solicitante:
PRIME PLANET ENERGY & SOLUTIONS INC [JP]
Prime Planet Energy & Solutions, Inc
Resumen de: US2025379292A1
A battery being as one aspect of a herein disclosed electricity storage device includes a case main body, an electrode assembly, a first lid body, and a second lid body. The case main body includes a pair of wide width surfaces being opposed to each other, and a pair of narrow width surfaces that are opposed to each other and that are configured to continue to the pair of wide width surfaces. A recessed part configured to elongate along a length direction of the case main body is present at an inner side of at least one narrow width surface of the pair of narrow width surfaces.
BOPI
Sede Electrónica
