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1121
results.
Updated on
22/04/2026 [16:11:00]
Results 450 to 475 of 1121
Absstract of: EP4726848A1
0001 The present invention relates to a unit cell and a method for manufacturing same. The objective of the present invention is to provide a unit cell and a method for manufacturing same, which can prevent folding and lifting of electrodes or separators during the manufacturing of a unit cell and a battery using the unit cell as a component, and can also prevent lifting of electrodes and separators during the use of the battery.
Absstract of: EP4726845A1
0001 A prismatic cell (100) including a shell (10) and two jelly roll assemblies (20) accommodated therein is provided. Each jelly roll assembly (20) includes at least two jelly rolls (30) and a first insulating tape (40), wherein one jelly roll (30) is designated as a first jelly roll (31), and another jelly roll (30) is designated as a second jelly roll (32). An outer peripheral surface of each jelly roll (30) includes two plane regions (304) and a first corner region (305a) and a second corner region (305b) respectively connected to the opposite ends of the two plane regions (304). The first insulating tape (40) covers the first corner region (305a) of the second jelly roll (32). One end of the first insulating tape (40) extends to the first plane region (304a) via the first corner region (305a) of the first jelly roll (31).
Absstract of: EP4726856A1
0001 The present disclosure relates to a manufacturing method of a lithium secondary battery comprising: a step (S1) of manufacturing a preliminary cell which comprises a positive electrode containing a positive electrode active material, a negative electrode, a separator and an electrolyte; and a step (S2) of charging the preliminary cell to a charging cut-off voltage and discharging the preliminary cell to the discharging cut-off voltage to activate the preliminary cell, wherein the positive electrode active material includes a lithium-rich manganese-based oxide containing 50 mol% or more of manganese(Mn) among all metals excluding lithium, and having a molar ratio of lithium to all metals excluding lithium (Li/Me) exceeding 1, and wherein the charging cut-off voltage is more than 4.3V, and the discharging cut-off voltage is 2.6V or more.
Absstract of: EP4726835A1
0001 The present disclosure relates to an electrolyte and an all-solid-state battery comprising the same. The electrolyte includes: a polymer mixture including a PEO (polyethylene oxide)-based polymer having crosslinkable functional groups, and a non-crosslinkable PEO-based polymer; a ceramic compound; and a polar compound, and exhibits excellent ionic conductivity despite its low content of the polar compound.
Absstract of: EP4726826A1
0001 A prismatic-housing battery (100) including a housing (10) and two cell assemblies (20) accommodated in the housing (10) is provided. Each cell assembly (20) includes at least two cells (30) stacked along a first direction (A) and a first insulation tape (41) covering the first corner area (305a) of the second cell (32). An outer peripheral surface of each cell (30) along a winding direction (B) includes two plane areas (304) and a first corner area (305a) and a second corner area (305b). The cell (30) adjacent to the housing (10) along the first direction (A) is a first cell (31), and the cell (30) adjacent to another cell assembly (20) is a second cell (32). One end of the first insulation tape (41) extends to the first corner area (305a) of the first cell (31) through the first corner area (305a) of the second cell (32).
Absstract of: EP4726894A1
0001 A battery pack according to an embodiment of the present disclosure includes a plurality of battery cells; a pack case configured to store the plurality of battery cells and having a discharge hole configured to discharge gas generated inside to the outside; a first protective cover configured to cover a first area, which is a partial area of the discharge hole; and a second protective cover installed closer to the discharge hole than the first protective cover and configured to cover a second area, which is another partial area of the discharge hole, so as to have a cover area overlapping the first protective cover.
Absstract of: EP4726858A1
A battery assembly is disclosed. The battery assembly according to an embodiment of the present disclosure includes a plurality of battery cells stacked in a left-right direction, each battery cell including a receiving portion having an electrode assembly and a sealing portion extended frontward from the receiving portion; an upper plate having a flat portion on which the plurality of battery cells is placed and a main groove extended in the left-right direction and accommodating at least part of the sealing portion; and a lower plate coupled to a lower surface of the upper plate.
Absstract of: EP4726855A1
The present disclosure relates to a manufacturing method of a lithium secondary battery comprising the steps of: preparing a battery cell including a positive electrode, a negative electrode and an electrolyte, wherein the positive electrode includes a lithium-rich manganese-based oxide in which the manganese content of all metals excluding lithium is greater than 50 mol% and the ratio of the number of moles of lithium to the number of moles of all metals excluding lithium (Li/Me) is greater than 1; and charging and discharging the battery cell at least once to activate the cell, wherein in the activating step, the charging is performed in a constant current-constant voltage mode, and the charging is ended when the charging current rate reaches 0.01 C to 0.04 C, and wherein in a region where the state of charge(SOC) of the battery cell is 3 to 60%, the charging current rate is 0.8 C to 1.2 C.
Absstract of: EP4726806A1
The present invention provides a positive electrode active material composite comprising a positive electrode active material substrate and a compound coating layer comprising elements Li, P, and F coated on the positive electrode active material substrate, a positive electrode comprising the positive electrode, and a lithium-ion secondary battery comprising the positive electrode.
Absstract of: EP4726804A1
0001 A lead-acid battery includes an element and an electrolyte solution. The element includes a positive electrode plate containing a positive electrode material, a negative electrode plate containing a negative electrode material, and a separator interposed between the positive electrode plate and the negative electrode plate. The negative electrode material contains a first carbonaceous material having a particle size of less than 32 µm and a fatty acid having 8 or more and 30 or less carbon atoms. A content Cc of the first carbonaceous material in the negative electrode material is 0.4 mass% or more. When the content of the fatty acid on a mass basis in the negative electrode material is represented by Cf (ppm), the specific surface area of the negative electrode material is represented by Sn (m<2>/g), and the DBP oil absorption of the first carbonaceous material is represented by Y, at least one of the condition (i) or the condition (ii) is satisfied. (i) The ratio Cf/Y is 0.1 ppm ·mL<-1> ·100 g or more. (ii) The ratio Cf/Sn is 20 ppm ·m<-2> ·g or more.
Absstract of: EP4726886A1
0001 The present disclosure relates to a battery module including: a cell assembly including a plurality of battery cells; a module case configured to store the cell assembly; a thermally conductive adhesive interposed between the cell assembly and the module case and configured to fix the cell assembly; and an overflow prevention member provided between the cell assembly and the module case and configured to form a space in which the thermally conductive adhesive is to be received.
Absstract of: EP4726419A1
A battery diagnosing apparatus according to one embodiment of the present disclosure includes: a profile acquisition unit that acquires a battery profile representing a correspondence between a voltage and a capacity of a battery; and a control unit that divides a capacity section of the battery profile into a plurality of sections, derives a target value for one target index related to a differential capacity peak or a resistance among a plurality of diagnosis indices set in advance, from each of the divided sections, compares a correspondence between the derived plurality of target values with a preset reference profile that represents a correspondence between a plurality of target indices, and diagnoses a state of the battery based on a result of the comparison.
Absstract of: EP4726412A1
A battery diagnosing apparatus according to one embodiment of the present disclosure includes: a profile acquisition unit that acquires a battery profile representing a correspondence between a voltage and a capacity of a battery; and a control unit that divides a capacity section of the battery profile into a plurality of sections, derives a target value for one target index related to a differential capacity peak or a charging end voltage among a plurality of diagnosis indices set in advance, from each of the divided sections, compares a correspondence between the derived plurality of target values with a preset reference profile that represents a correspondence between a plurality of target indices, and diagnoses a state of the battery based on a result of the comparison.
Absstract of: EP4726866A1
0001 Disclosed are an apparatus for sealing a pouch-shaped secondary battery case, the apparatus including a sealing tool including an upper sealing tool and a lower sealing tool configured to be disposed in contact with each other in the state in which a sealed portion of the pouch-shaped secondary battery case is located therebetween in order to press and heat the sealed portion such that the sealed portion is sealed, an upper pressing unit located in front or at the rear of the upper sealing tool, and a lower pressing unit located in front or at the rear of the lower sealing tool, and a sealing method using the same.
Absstract of: EP4726411A1
A battery profile generating apparatus includes: a charging/discharging unit configured to charge and discharge a battery; a measurement unit configured to measure battery information that includes at least one of the voltage, current, and temperature of the battery during the charging/discharging process; and a control unit. The control unit is configured to: determine a target temperature and a target C-rate corresponding to charging/discharging conditions based on a preset reference profile that represents the correspondence between a threshold temperature and a threshold C-rate; control the charging/discharging unit to charge or discharge the battery at the target C-rate when the battery temperature corresponds to the target temperature; and generate a battery profile corresponding to the battery based on the battery information.
Absstract of: EP4726876A1
A secondary battery according to the present invention is characterized in comprising: an electrode assembly; an outer film which has an inner space for accommodating the electrode assembly and which has an outer material opening for communicating the inner space with the outside; and a cover member covering the outer material opening of the outer film, wherein the outer film has a sealing surface at which the inner surface and the outer surface of the outer film meet in a direction perpendicular to the outer material opening and are joined by an adhesive film, and the adhesive film has a sealing index (SI) defined by the static contact angle of an adhesive surface and a peel strength in an electrolyte of 1.00 to 6.00, and a secondary battery with secured sealing durability and improved energy density may be provided.
Absstract of: EP4726413A1
0001 A battery managing apparatus according to an embodiment of the present disclosure includes a measurement unit configured to measure the voltage of a battery that is charged by repeating a charging period and a resting period; and a control unit configured to calculate a resistance corresponding to each of a plurality of resting periods, generate a first profile indicating a correspondence relationship between a state of charge (SOC) and the resistance of the battery, divide an SOC section of the first profile into a plurality of unit sections, and calculate a summed resistance of the battery based on a weight and a reference resistance corresponding to each of the plurality of unit sections.
Absstract of: EP4726410A1
0001 A battery diagnosing method according to one aspect of the present disclosure includes a sampling step of sampling an OCV value of a target battery within a partial SOC range among an entire SOC range of the target battery; a generation step of generating an estimated profile, which estimates OCV values of the target battery corresponding to the entire SOC range based on the OCV values sampled within the partial SOC range; and a diagnosis step of diagnosing the target battery based on the estimated profile.
Absstract of: EP4726418A1
A battery managing apparatus according to an embodiment of the present disclosure includes a profile acquisition unit configured to acquire a first profile for each of a plurality of batteries included in a battery pack; and a diagnosis unit configured to calculate a target value based on a capacity value for each of the plurality of batteries as a diagnostic factor on a basis of a first target point included in each of the plurality of first profiles, generate a distribution profile indicating a correspondence relationship between a plurality of calculated target values and the number of each of the plurality of target values, determine whether the distribution profile satisfies a predetermined condition, and diagnose a state of the battery pack according to a determination result.
Absstract of: EP4726895A1
0001 The present disclosure is directed to providing a gas release member that can release gas inside a pouch to the atmosphere and has a reduced deformation ratio and a pouch cell including the same. The pouch cell according to the present disclosure may include an electrode assembly including a positive electrode, a negative electrode and a separator, a pouch accommodating the electrode assembly, an electrode lead electrically connected to the electrode assembly and protruded outward from the pouch, a lead film covering a part of the electrode lead to isolate the electrode lead from the pouch, and a gas release member disposed between the electrode lead and the lead film and configured to form a gas movement route by gas inside the pouch, wherein the gas release member may include a first member, a part of which has a concave shape in a length direction of the electrode lead, and a second member extended from the first member toward the electrode assembly.
Absstract of: EP4726409A1
0001 The battery management apparatus according to an embodiment of the present disclosure includes a profile obtaining unit configured to obtain a differential profile representing a corresponding relationship between a voltage and a differential capacity of a battery; and a control unit configured to determine a first point, which is a start point of a preset target voltage section of the differential profile, a second point having a highest differential capacity, and a third point having a lowest differential capacity in a voltage section higher than or equal to a voltage of the second point in the target voltage section, and to diagnose a state of the battery according to differential capacities of the first point, the second point, and the third point.
Absstract of: EP4726896A1
0001 The present invention provides a battery pack comprising a battery module and a frame accommodating the battery module, wherein the frame is provided with an exhaust unit arranged to have at least a portion thereof overlapping with the battery module in heightwise direction. the exhaust unit comprising: an inlet where a gas inside the frame is introduced into; an outlet where the gas introduced into the inlet is discharged out of the frame; and an exhaust passage extending along the frame between the inlet and the outlet.
Absstract of: EP4725772A1
The present disclosure relates to a backup battery assembly, and more specifically, to a backup battery assembly that supplies a current to a vehicle door lock to lock or unlock the vehicle door lock when the main power of the vehicle door lock is cut off. A backup battery assembly according to the present disclosure may include a backup battery that supplies a current to a vehicle door lock when the main power of the vehicle door lock is cut off, a backup battery case accommodating the backup battery, and a protection block installed inside the backup battery case to protect the backup battery, wherein the protection block may include a first end coupled to one side surface inside the backup battery case, a second end coupled to the other side surface inside the backup battery case, and a connection portion connecting the first end and the second end between the first end and the second end, wherein the cross-sectional area of the first end and the second end in the width direction of the backup battery case may be wider than the cross-sectional area of the connection portion in the first direction, and the protection block may be a rigid block made of SUS, aluminum, or steel.
Absstract of: EP4726859A1
0001 According to an aspect of the present disclosure, there is provided a battery pack, including: a case including opening portions that allow air outside the case to flow into an inside of the case; and a plurality of battery cells housed in the case and arranged with a gap between each other, the gap including a plurality of gaps, the opening portions being provided facing the gaps.
Nº publicación: EP4726875A1 15/04/2026
Applicant:
LG ENERGY SOLUTION LTD [KR]
Absstract of: EP4726875A1
0001 A battery cell according to an embodiment of the present disclosure may include an electrode assembly configured by winding a first electrode and a second electrode with a separator interposed therebetween around a winding axis to define a core and an outer surface, the first electrode including an active material portion coated with an active material layer along a winding direction and a first uncoated portion not coated with an active material layer, and at least a portion of the first uncoated portion being used as an electrode tab itself, a battery housing configured to receive the electrode assembly through an opening formed on one side, and a current collector including a tab-coupling portion coupled to the first uncoated portion and a housing-coupling portion extending from the tab-coupling portion and electrically coupled to an inner surface of the battery housing, wherein at least one notch may be provided in the housing-coupling portion.
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