Resumen de: US2025372710A1
Provided is an electrolyte solution for a rechargeable lithium battery and a rechargeable lithium battery including the same, and the electrolyte solution includes a non-aqueous organic solvent, a lithium salt, and an additive represented by Formula 1 as described herein.
Resumen de: US2025372722A1
An electrode assembly, including: a negative electrode structure; and a plurality of positive electrodes, wherein the negative electrode structure includes first and second separating films, and a lithium metal layer interposed between the first and second separating films, wherein the negative electrode structure is divided into a plurality of stack portions, a plurality of folding portions, and first and second wrapping portions, wherein the stack portion and the folding portion are located alternately between the first and second wrapping portions located at an end of the negative electrode structure, respectively, and the first and second wrapping portions abut the stack portion, wherein the plurality of stack portions are sequentially positioned side by side in a thickness direction by the folding portion, and at least one positive electrode is positioned between the stack portions adjacent each other in the thickness direction, and wherein the second wrapping portion is positioned to abut the first wrapping portion, and an outer surface of the electrode assembly in the thickness direction and in a longitudinal direction is surrounded by the second wrapping portion, or by the second wrapping portion and at least one of the first wrapping portion and an outermost stack portion.
Resumen de: US2025372708A1
Provided are a non-aqueous electrolyte solution for a lithium secondary battery, which includes a compound represented by Formula 1, a lithium salt, and an organic solvent; and a lithium secondary battery including the same:wherein the variables are described herein.
Resumen de: US2025372727A1
Embodiments of the present disclosure may provide an electrode plate. The electrode plate includes: a mixture section where an active material is on a substrate; an uncoated section where the active material is not on the substrate; a tab coupled to the uncoated section; and a resin layer on the mixture section.
Resumen de: US2025372728A1
An electrode assembly includes a first electrode, an outer separator on the first electrode, a second electrode on the outer separator, and an inner separator on the second electrode, wherein a protection member is at an end of one side of the first electrode, and a position of the protection member is at a curved portion of the first electrode in a wound state.
Resumen de: EP4657637A1
Disclosed is a battery module, which includes a cell stack including stacked battery cells; a module case configured to accommodate the cell stack and having a gas venting hole formed in a bottom plate located at a lower portion of the cell stack; and a venting guide unit including a needle member configured to be popped up from the gas venting hole to make a hole in the battery cell, and a needle stopper member configured to prevent the needle member from being popped up while deformation by heat or external force does not occur.
Resumen de: EP4657564A1
A cathode electrode of a Zinc Bromine Static Battery (ZBSB) apparatus. The cathode electrode comprises 80-90 % by weight of a mixture of a quaternary ammonium salt fused with activated carbon to form a salt-fused activated carbon component. The cathode electrode further comprises 5-12 % by weight of super P carbon. Furthermore, the cathode electrode comprises 1-5 % by weight of a binder. The salt-fused activated carbon component, super P carbon, and the binder are mixed together to form the cathode electrode.
Resumen de: EP4657645A1
A disclosed secondary battery 10 includes a first electrode 14b including a first current collector having an elongated sheet shape, a second electrode 14a including a second current collector having an elongated sheet shape, a separator provided between the first electrode 14b and the second electrode 14a, and a first current collector plate 17 welded to the first electrode 14b. The first electrode 14b and the second electrode 14a are wound for 9 or more turns with the separator therebetween to constitute an electrode group 14. An end portion of the first current collector extending in the longitudinal direction thereof protrudes from one of the end surfaces of the electrode group 14. A part of the end portion is welded to the first current collector plate 17, while a region of the end portion that corresponds to inner N turns (N is an integer of 2 or more and 8 or less) is not welded to the first current collector plate 17. In the above configuration, internal short circuits due to charging and discharging can be suppressed.
Resumen de: EP4657537A1
Provided are an all-solid-state secondary battery that has a low internal resistance, and an electrode for constituting the all-solid-state secondary battery. The all-solid-state secondary battery of the present invention is related to Goals 3, 7, 11, and 12 of the SDGs.The electrode for an all-solid-state secondary battery according to the present invention is an electrode for an all-solid-state secondary battery, the all-solid-state secondary battery having a solid electrolyte layer, the electrode including a molded body made of an electrode mixture containing an electrode active material, a conductive assistant, and a solid electrolyte, wherein the electrode active material has a particle size D90 of 1.5 µm or less, and 0.4 ≤ B/A ≤ 1.5 is satisfied, where A (µm) is an average particle size D50 of the electrode active material, and B (µm) is an average particle size D50 of the conductive assistant. Also, the all-solid-state secondary battery according to the present invention includes: a positive electrode; a negative electrode; and a solid electrolyte layer interposed between the positive electrode and the negative electrode, wherein at least one of the positive electrode and the negative electrode is the electrode for an all-solid-state secondary battery.
Resumen de: EP4657620A1
A battery cell (10) includes a battery element (100), a front lid member (210) covering an end part of the battery element (100), and an exterior film (300) wound around the battery element (100) and the front lid member (210). The front lid member (210) includes a front protrusion (212) protruding toward a side opposite to the battery element (100) of the front lid member (210). The front protrusion (212) and the exterior film (300) are at least partially bonded to each other.
Resumen de: EP4657624A1
A power source apparatus and its method of manufacture that can efficiently dissipate heat with a simple structure is provided. The power source apparatus 100 is provided with a plurality of rechargeable battery cells 1 that have a first end plane 1a and a second end plane 1b as opposing end planes of each cell; a battery holder 20 that retains the plurality of rechargeable battery cells 1 side by side with each first end plane 1a and each second end plane 1b aligned in respective planes, and formed with holder openings 27 that expose the second end plane 1b of each cell; heat conducting material 40 joined to the second end plane 1b of each cell through the holder openings 27; and an exterior case 10 that houses the battery holder 20. The exterior case 10 is formed with a case opening plane 16 that exposes the heat conducting material 40. The heat conducting material 40 is resin material applied to and cured on each second cell end plane 1b to bond the conducting material 40 to each respective second cell end plane 1b.
Resumen de: EP4657591A1
Disclosed are an electrolyte solution for a rechargeable lithium battery. The electrolyte solution for the rechargeable lithium battery includes a non-aqueous organic solvent, a lithium salt, a first compound and a second compound.
Resumen de: EP4657640A1
A battery module according to the present disclosure may include a cell assembly having multiple battery cells that are mutually stacked; a module case accommodating the cell assembly in an internal space; and a cover portion that is coupled to an outer surface of the module case and has a blocking layer disposed between the module case and the cover portion to block the entry and exit of flames and reduce heat transfer, wherein the blocking layer may be foamed in a foam form and coupled to the cover portion and may be integrally formed with the cover portion.
Resumen de: EP4657559A1
A positive electrode active material and a preparation method therefor, a positive electrode plate, a battery, and a power consuming device. The positive electrode active material comprises: an inner core, which includes Lia1Nix1My1M'z1Om1Rn1, wherein 0.9 ≤ a1 ≤ 1.1, 0.6 ≤ x1 < 1, 0 ≤ y1 ≤ 0.4, 0 < z1 ≤ 0.01, 1.9 ≤ m1 ≤ 2.2, and 0 ≤ n1 ≤ 0.1; M comprises at least one of Co, Mn, Al, Ta, Mg, Mo, Ga, Sn, Ge, Te, La and Ce; M' comprises at least one of Y, La, Mo, Zr, W, Sb, Nb, Te, Sr, Ti, or Ga; R comprises at least one of F, Cl, or S; an intermediate layer, which is coated on at least a part of the outer surface of the inner core and has a porous structure; and an outer shell layer, which is coated on at least a part of the outer surface of the intermediate layer and includes Lia2Nix2My2M'z2Om2Rn2, wherein 0.9 ≤ a2 ≤ 1.1, 0.6 ≤ x2 <1, 0 ≤ y2 ≤ 0.4, 0 ≤ z2 ≤ 0.01, 1.9 ≤ m2 ≤ 2.2, and 0 ≤ n2 ≤0.1.
Resumen de: EP4657594A1
The present disclosure relates to a method for manufacturing a lithium-sulfur battery, and more particularly, to an activation method of a lithium-sulfur battery through initial discharge. The present disclosure is characterized by activation of the lithium-sulfur battery through constant voltage (CV) discharge before initial charge. The method for manufacturing the lithium-sulfur battery according to an embodiment of the present disclosure may significantly reduce the initial discharge time in the activation process of the battery.
Resumen de: EP4657643A1
The present application relates to the technical field of secondary batteries and specifically provides a separator and a preparation method therefor, a secondary battery and an electric device. The separator includes a porous base film, where the porous base film includes a matrix phase and a filler phase distributed in the matrix phase; in a differential scanning calorimeter test curve of the porous base film, both a melting peak of the matrix phase and a melting peak of the filler phase are included, and a temperature of the melting peak of the matrix phase is higher than a temperature of the melting peak of the filler phase. The separator provided by the present application is capable of providing the reliability of secondary batteries.
Resumen de: EP4657093A1
The present application provides a cell safety prediction method, apparatus, device and medium determines a first environmental parameter, and performs a first thermal runaway operation on a target cell according to the first environmental parameter until thermal runaway occurs in the target cell; obtains a first state parameter of the target cell to determine a target heat production model; performs three-dimensional modeling on a battery structure, and performs a second thermal runaway operation on the established model; and obtains a second state parameter during the second thermal runaway operation according to the target heat production model, thereby judging safety of a target battery pack. Through an actual thermal runaway operation, the target heat production model is determined, and through a simulated thermal runaway operation, the safety of the target battery pack is determined according to the target heat production model, which saves the test cost and simplifies a cell safety prediction system; and at the same time, the method reduces requirements of mechanism modeling for basic data, and generally improves the efficiency and accuracy in the prediction of the cell safety.
Resumen de: EP4657585A1
The present application belongs to the field of batteries and discloses a high-voltage lithium-ion battery including a positive electrode, a negative electrode, and an electrolyte. In the present application, a complex containing carboxylate of a branched structure is used as the electrolyte solvent, which greatly meets the requirements of the high-voltage battery system, and improves the high-temperature resistance and high-voltage resistance stabilities of the battery, and improves the low-temperature cycling performance of the battery.
Resumen de: EP4657553A1
The present application relates to a method for preparing a negative electrode slurry, the method including the following steps: mixing a negative electrode active material, a conductive material, a (meth)acrylic binder, and a first solvent to form a mixture; measuring an initial pH of the mixture; adjusting the pH of the mixture to within a target pH region by adding a second solvent containing a pH adjuster, when the initial pH is outside the target pH region; and obtaining a mixture having a pH within the target pH region. Accordingly, an effect of reducing the risk of explosion by preventing hydrogen gas from being generated without damaging the constituent components of the negative electrode slurry is provided.
Resumen de: EP4657606A1
Provided are a pressure relief assembly, a battery module, a battery pack, and a powered device. The pressure relief assembly includes a cooling plate (110) and an isolation assembly (120). The cooling plate (110) is configured to cool a cell (210), and a pressure relief inlet (112) is disposed on the cooling plate (110). The isolation assembly (120) is connected to the cooling plate (110) to define a pressure relief cavity (130). A pressure relief outlet (1220) is disposed on the isolation assembly (120), and the pressure relief inlet (112) communicates with the pressure relief outlet (1220) through the pressure relief cavity (130).
Resumen de: EP4657647A1
Disclosed is a battery, which includes an electrode assembly; a battery housing configured to accommodate the electrode assembly through an open portion formed at one side thereof; a battery terminal configured to be electrically connected to the electrode assembly through a closed portion formed at a side opposite to the open portion of the battery housing; and a current collector having a first coupling portion electrically coupled to the electrode assembly and a second coupling portion electrically coupled to the battery terminal and having a resistance increasing region formed in at least a part thereof.
Resumen de: EP4657639A1
A secondary battery includes a case with an opening, an electrode assembly accommodated in the case, a cap plate bonded to the opening, and a degassing device bonded to a gas discharge hole formed in one of the case and the cap plate to discharge gas inside the case, wherein the degassing device includes a central portion exposed to an outside of the case through an opening of the gas discharge hole, a bonding portion bonded to a circumferential periphery of the gas discharge hole, a peripheral portion that is a surface for connecting the bonding portion and the central portion, a notch formed as a groove in the peripheral portion along an outline formed by the bonding portion, and two or more hinges formed as grooves on a line defined by the notch.
Resumen de: EP4657636A1
A battery pack according to the present disclosure may include a plurality of cell assemblies; a pack case in which a receiving space for accommodating the plurality of cell assemblies is formed; and a discharge unit provided to be partially exposed to one side of the pack case and discharging venting gas generated by a thermal event in the cell assembly to the outside of the pack case.
Resumen de: EP4657593A1
Provided in the present application are a battery cell and a manufacturing method therefor, and a battery and an electric apparatus. The battery cell comprises a positive electrode sheet and an electrolyte. The electrolyte solution contains a non-aqueous solvent and electrolyte salt, wherein the electrolyte salt contains lithium salt and metal Me salt, the ionic radius of Me positive ions is greater than the ionic radius of lithium ions, and the weight content of the lithium ions in the electrolyte is denoted as w1, and the weight content of the Me positive ions in the electrolyte is denoted as w2, both of which are based on the total weight of the electrolyte. In a charge and discharge test of a battery cell, the total discharge capacity of the battery cell is denoted as Q1, and the discharge capacity of the battery cell with a discharge voltage of 3.6 V is denoted as Q2, and the unit of the discharge capacities is mAh. When the remaining capacity of the battery cell is greater than 90%, 0.8 ≤ (Q2/Q1)/w2/(w1 + w2) ≤ 8.5 is satisfied.
Nº publicación: EP4656299A1 03/12/2025
Solicitante:
CONTEMPORARY AMPEREX TECHNOLOGY CO LTD [CN]
Contemporary Amperex Technology Co., Limited
Resumen de: EP4656299A1
Provided in the present application are a coating die head, and a coating device for an electrode sheet. The coating die head is provided with a feeding channel, a first flow homogenization cavity and a plurality of coating ports arranged at intervals in a first direction, wherein the first flow homogenization cavity extends in the first direction and is in communication with the feeding channel; the first flow homogenization cavity is in communication with the plurality of coating ports; two ends of the feeding channel are respectively a feeding port and a connecting port connected to the first flow homogenization cavity; and from the feeding port to the connecting port, the size of the cross section of the feeding channel in the first direction tends to increase. By means of the above arrangement, the pressure of slurry at the plurality of coating ports can be balanced, thus improving the discharge consistency of the plurality of coating ports and the uniformity of slurry coating.