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1039
results.
Updated on
17/07/2026 [07:34:00]
Results 950 to 975 of 1039
Absstract of: EP4773427A1
A battery module according to an embodiment includes: a battery cell laminate that is formed by stacking a plurality of battery cells; and a busbar frame that covers at least one surface of the battery cell laminate, and on which at least two terminal busbars electrically connected to the battery cell laminate are mounted, wherein the terminal busbar includes at least one combining slit for electrical connection with external configuration.
Absstract of: EP4773232A1
0001 The present invention relates to a negative electrode active material, a negative electrode for a lithium secondary battery, including same, and a lithium secondary battery. The negative electrode active material includes a silicon-based active material; and graphite, wherein the graphite includes natural graphite and artificial graphite, an absolute value of a ratio of a difference in average particle diameter (D50) size of the natural graphite with respect to the artificial graphite is 10% or less, and an absolute value of a ratio of a difference in average particle diameter (D50) size of the silicon-based active material with respect to the artificial graphite is 40% or less.
Absstract of: EP4773389A1
A battery (100) and an electrical device, relating to the field of batteries. The battery (100) comprises battery cells (20) and a support member (30). Each battery cell (20) comprises a housing (21) and a pressure relief component (212). The housing (21) comprises a first wall portion (211), and the pressure relief component (212) is provided on the first wall portion (211). The pressure relief component (212) comprises a first groove (2121), and is configured to crack along the first groove (2121) during pressure relief of the battery cell (20). The support member (30) supports the first wall portion (211). The support member (30) has a support surface (31) facing the first wall portion (211), and the support surface (31) is provided with a clearance portion (32). In the direction of thickness of the first wall portion (211), a projection of the first groove (2121) lies within the clearance portion (32). By providing the clearance portion (32) on the support member (30) and by allowing the projection of the first groove (2121) in the direction of thickness of the first wall portion (211) to lie within the clearance portion (32), the clearance portion (32) can provide clearance for the first groove (2121). Thus, during pressure relief of the battery cell (20), the support member (30) is less likely to abut against the outer side of the first groove (2121), reducing the likelihood of suppressing the cracking of the first groove (2121). This arrangement ensures that the first
Absstract of: EP4773417A1
The present invention relates to a connector. The connector according to one aspect of the present invention is a battery cell connector for electrically connecting a battery cell to the outside, and comprises: a base member having a lead surface on which an electrode lead of the battery cell can be placed; and a conducting assembly coupled to the base member so as to be electrically connectable to the electrode lead placed on the lead surface, wherein the conducting assembly can include: a conductive contact member movably coupled to the base member so that at least a part thereof can protrude from the lead surface of the base member; and an elastic member for elastically supporting the contact member toward the lead surface of the base member.
Absstract of: EP4773334A1
A battery temperature estimation device according to an embodiment disclosed in this document may include an impedance measurement unit configured to measure frequency-specific impedance of a battery; a memory configured to store a temperature-impedance imaginary part table according to a frequency; and a controller configured to estimate a temperature of the battery through the temperature-impedance imaginary part table based on an imaginary part of the frequency-specific impedance.
Absstract of: EP4773362A1
0001 The present application provides a cover plate and a battery, where the cover plate is applied to batteries. The cover plate includes a plurality of ribs, each rib extends outward from the center of the cover plate along a radial direction of the cover plate, and the plurality of ribs are distributed along a circumferential direction of the cover plate. The cover plate is further provided with a plurality of score grooves, each score groove is provided between two adjacent ribs, and the score grooves are configured to rupture when the internal pressure of the battery exceeds a preset value.
Absstract of: EP4773339A1
Embodiments of the present disclosure provide a battery pack. The battery pack includes a plurality of battery cells arranged in a first direction, a plurality of cooling fins between the plurality of battery cells, a plurality of pads between the plurality of battery cells, a first integrated circuit assembly configured to be electrically connected to the plurality of battery cells, a second integrated circuit assembly configured to be electrically connected to the plurality of battery cells and spaced apart from the first integrated circuit assembly in a second direction perpendicular to the first direction, and a flat flexible cable (FFC) assembly between the first and second integrated circuit assemblies, and the FFC assembly includes an intermediate part overlapping the plurality of battery cells in the first direction.
Absstract of: EP4773305A1
The present invention provides a non-aqueous electrolyte and a lithium secondary battery including the same. The non-aqueous electrolyte of the present invention includes a lithium salt, an organic solvent, and an additive. The additive includes a cyclic borate-based compound so as to prevent the decomposition of the non-aqueous electrolyte of the lithium secondary battery in a high-power environment that could lead to negative electrode degradation, or to further improve low-temperature high-rate discharging characteristics, high-temperature stability, overcharging prevention, and high-temperature battery expansion suppression effects.
Absstract of: EP4773251A1
0001 A positive electrode of a secondary battery includes: a positive electrode active material layer, which in turn includes a positive electrode active material, a conductive material, a binder, and a positive electrode additive. The positive electrode additive includes substituents with a cyclic sulfonic ester (sultone) or cyclic sulfate structure, so that the oxygen release from a positive electrode active material is suppressed, which improves the structural stability of the positive electrode active material.
Absstract of: EP4773385A1
A battery cell (20), a battery (100), and an electric device are disclosed. The battery cell (20) includes a housing (21) and a pressure relief component (214), where the housing (21) has a first wall portion (211), the first wall portion (211) has a first outer surface (2111) facing away from an interior of the housing (21). The pressure relief component (214) is disposed on the first wall portion (211), where the pressure relief component (214) includes a first weak portion (2145), and the pressure relief component (214) is configured as capable of rupturing along at least a part of the first weak portion (2145) during pressure relief of the battery cell (20). A minimum radial dimension of the first outer surface (2111) is A, a radial direction is a direction passing through a center point of the first outer surface (2111), and an outer edge of the first outer surface (2111) is offset toward the center point of the first outer surface (2111) by a predetermined distance L1 to form a first edge (2143), where L1 = 0.05*A. Along a thickness direction of the first wall portion (211), a projection of the first weak portion (2145) on the first outer surface (2111) is located within the first edge (2143). The first edge (2143) defines a first region (2144) with lower stiffness, so that a thickness of the first weak portion (2145) located in the first region (2144) is greater under the same burst pressure, making the first weak portion (2145) less likely to rup
Absstract of: EP4773397A1
An electrochemical apparatus (100) and an electric device (1000) are provided. The electrochemical apparatus (100) includes a housing (10), an electrode assembly (20), and a first adhesive component (30). The electrode assembly (20) is disposed within the housing (10). The electrode assembly (20) includes a first side surface (21) and a second side surface (22) opposite each other along a first direction, and a third side surface (23) and a fourth side surface (24) opposite each other along a second direction. The second direction is perpendicular to the first direction. The first adhesive component (30) includes a first side portion (31) and a second side portion (32) opposite each other. The first side portion (31) includes a first adhesive region (311), a first non-adhesive region (312), and a second adhesive region (313) arranged sequentially. The first adhesive region (311) is adhered to the first side surface (21). The second adhesive region (313) is adhered to the second side surface (22). The second side portion (32) includes a third adhesive region (321). The third adhesive region (321) is adhered to the housing (10). Along the second direction, a projection of the first non-adhesive region (312) overlaps the third side surface (23), and a projection of the third adhesive region (321) overlaps the third side surface (23). The first non-adhesive region (312) of the first adhesive component (30) is not adhered to the third side surface (23), which is conducive to reduc
Absstract of: EP4773375A1
0001 A battery pack according to certain embodiments of the present disclosure may comprise a cell module assembly including a battery cell stack in which a plurality of battery cells are stacked, a lower pack case including a bottom plate that supports a lower part of the cell module assembly and a fixing plate that extends from an edge of the bottom plate toward an upper part, an upper pack case that covers an upper surface, both side surfaces, and a rear surface of the cell module assembly and couples with the lower pack case, a lower fixing part that is formed on the fixing plate of the lower pack case, and an upper fixing part that is formed on the upper pack case, and at least partially overlaps with the lower fixing part to be fixed to each other when the lower pack case and the upper pack case are assembled.
Absstract of: EP4773189A1
Disclosed are an electrode assembly, a battery, a battery pack, and a method of designing an electrode assembly. The electrode assembly includes an electrode plate structure and at least one tab structure. The tab structure includes a plurality of tabs, and the plurality of tabs are disposed on one side of the electrode plate structure and are connected to the electrode plate structure; where at least two adjacent tabs have different sizes.
Absstract of: EP4773463A1
A method for establishing a charging protocol for a lithium secondary battery and a battery management system according to the present invention include a measurement unit configured to measure a closed circuit voltage (CCVSOCy) and an open circuit voltage (OCVSOCy), with respect to a state of charge (SOCy) during charging with each of different charging currents (I), for a two-electrode battery cell including a positive electrode and a negative electrode; a memory unit configured to collect and store an internal resistance profile obtained by calculating an internal compensated resistance value (Rrest3-0.1s) with respect to the state of charge by substituting the measured CCVSOCy and OCVSOCy into Equation 1, and by plotting the internal compensated resistance value (Rrest3-0.1s) with respect to the state of charge for each charging current (I); and a control unit configured to determine, from the internal resistance profile, limit states of charge each corresponding to each charging current, and to establish a charging protocol based thereon.
Absstract of: EP4773212A1
An anode for a lithium secondary battery according to an embodiment of the present disclosure is provided an anode current collector; a first anode mixture layer formed on at least one surface of the anode current collector and comprising a first carbon-based active material comprising artificial graphite and natural graphite; and a second anode mixture layer formed on the first anode mixture layer and comprising a second carbon-based active material comprising artificial graphite, wherein the first anode mixture layer and the second anode mixture layer respectively comprise a silicon-based active material, and wherein the first anode mixture layer has an OI value according to Formula 1 that is greater than the OI value of the second anode mixture layer. OI=I004/I110 (In Formula 1, OI is a crystal orientation index according to an XRD measurement, I004 is the peak intensity of the (004) plane when the XRD measurement is performed for an anode mixture layer, and I110 is the peak intensity of the (110) plane when the XRD measurement is performed for the mixture layer.)
Absstract of: EP4773394A1
The present invention relates to: a separator comprising a porous substrate, a ceramic coating layer provided on at least one of respective surfaces of the porous substrate, and a positively charged self-assembled monolayer provided on the ceramic coating layer; a method for manufacturing the separator; and a secondary battery comprising the separator.
Absstract of: EP4773303A1
The present disclosure provides a non-aqueous electrolyte comprising a lithium salt, an organic solvent and a compound represented by Formula 1:wherein, in Formula 1, R1 and R2 are each independently any one selected from a group consisting of H, -OC=CH, F, a nitrile group, an alkyl group having 1 to 10 carbon atoms, an alkenyl group having 2 to 10 carbon atoms, and an alkynyl group having 2 to 10 carbon atoms.
Absstract of: EP4773310A1
The present disclosure provides a non-aqueous electrolyte and a lithium secondary battery including the same. The non-aqueous electrolyte of the present disclosure includes a lithium salt; an organic solvent and an additive. The organic solvent includes a first organic solvent and a second organic solvent, the first organic solvent may be CFH2CFHCFH2, and the second organic solvent may be a cyclic carbonate-based organic solvent.
Absstract of: EP4773288A1
The present disclosure relates to a sulfide-based solid electrolyte and an all-solid-state battery including same, and more particularly, to a sulfide-based solid electrolyte comprising three metals, including germanium (Ge), silicon (Si), and antimony (Sb), thereby to improve the ionic conductivity.
Absstract of: EP4773289A1
The present disclosure relates to a sulfide-based solid electrolyte and an all-solid-state battery including same, and more particularly, to introducing various heterogeneous elements into the sulfide-based solid electrolyte to cause the disorder of the structure, while maintaining the crystal structure of the sulfide-based solid electrolyte, thereby improving the mobility of lithium ions and the ionic conductivity.
Absstract of: EP4773304A1
The present invention provides a lithium secondary battery comprising a positive electrode, a negative electrode, a separator; and a non-aqueous electrolyte, wherein the positive electrode includes a positive electrode active material, the positive electrode active material includes lithium iron phosphate particles, a loading amount of the positive electrode is 450 mg/25 cm2 to 740 mg/25 cm2, the non-aqueous electrolyte includes a lithium salt, an organic solvent, and an additive, the additive includes at least one selected from the group consisting of compounds represented by Formulas 1 to 3 below, and the additive is included in the non-aqueous electrolyte in an amount of 0.1 wt% to 3 wt%.
Absstract of: EP4773390A1
A battery pack according to embodiments of the present disclosure includes: a pack frame on which a plurality of battery cell assemblies are mounted; at least one venting part located on a side face of the pack frame, wherein the side face of the pack frame is a cavity structure in which an empty space is formed between an outer face of the pack frame and an inner face of the pack frame; at least one pair of guide plates are disposed in the empty space formed on the side face of the pack frame formed with the venting part; the pair of guide plates are disposed symmetrically with each other with the venting part interposed between them; and the pair of guide plates are disposed so as to have an inclination that is lifted in a direction toward the venting part with respect to the lower part of the pack frame.
Absstract of: EP4772889A1
Disclosed are a method and an electronic device for measuring the resistance of a target electrode, the method comprising the steps of: acquiring a chart related to the electrical conductivity of a target electrode according to changes in frequency after the target electrode has been immersed in an electrolyte for a predefined time or longer; determining a first point and a second point on the electrical conductivity graph of the target electrode, the graph being included in the chart; and measuring the resistance of the target electrode on the basis of the first point and the second point.
Absstract of: EP4772343A1
0001 This application provides a multi-layer composite structure, a preparation method, a battery cover, and an electronic device. The multi-layer composite structure is formed by a plurality of stacked fiber layers. Each fiber layer is formed by impregnating a fiber sheet in a prepolymer solution followed by curing, and the fiber sheet in at least one fiber layer is made of a poly-p-phenylene benzobisoxazole fiber, i.e., a PBO fiber. In this way, the multi-layer composite structure may be endowed with higher strength and modulus. When the multi-layer composite structure is subjected to an impact, energy is absorbed and dissipated. Therefore, the reliability of the multi-layer composite structure in the impact is not compromised based on thickness and weight reduction, thereby providing excellent puncture resistance for the battery cover formed from the multi-layer composite structure.
Nº publicación: EP4773378A1 08/07/2026
Applicant:
LG ENERGY SOLUTION LTD [KR]
LG Energy Solution, Ltd.
Absstract of: EP4773378A1
0001 The present invention discloses a battery pack and a cover for the same. The battery pack according to the present invention may include: a pack case having an accommodating space with one open side, the pack case accommodating a plurality of battery modules therein; and a cover covering the one open side of the pack case and provided with a graphene coating layer thereon.
BOPI
Electronic site
