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PRECURSOR FOR POSITIVE ELECTRODE ACTIVE MATERIAL FOR LITHIUM SECONDARY BATTERY, POSITIVE ELECTRODE ACTIVE MATERIAL INCLUDING SAME, AND METHOD FOR MANUFACTURING POSITIVE ACTIVE MATERIAL

Resumen de: EP4574768A1

The present disclosure relates to a positive electrode active material precursor for a lithium secondary battery, a positive electrode active material for a lithium secondary battery, and a method of producing a positive electrode material, and the positive electrode active material precursor for a lithium secondary battery may satisfy, in XRD peak values, at least one of an I₀₀₁/I₁₀₀ ratio of 0.5 to 6, an I₀₀₁/I₁₀₁ ratio of 0.6 to 3, an I₀₀₁/I₁₀₂ ratio of 2.5 to 8, an I₀₀₁/I₁₁₀ ratio of 1.5 to 11, an I₀₀₁/I₁₁₁ ratio of 2 to 14, an I₁₀₀/I₀₀₁ ratio of 0.1 to 3.1, an I₁₀₀/I₁₀₁ ratio of 0.1 to 1.5, an I₁₀₀/I₁₀₂ ratio of 1.0 to 7.3, an I₁₀₀/I₁₁₀ ratio of 1.5 to 3.2, and an I₁₀₀/I₁₁₁ ratio of 2.5 to 5.3.

PLATE-TYPE FIRE EXTINGUISHING DEVICE AND BATTERY MODULE INCLUDING SAME

Resumen de: EP4574220A1

A plate-type fire extinguishing device (100) of the present invention is configured to spray, in case of a fire in a battery, a built-in fire extinguishing agent onto the area where the fire occurred, thereby extinguishing the fire. The plate-type extinguishing device (100) comprises: an exterior means (110) comprising a chamber which is sealed to have an interior space having a predetermined capacity and is formed in the shape of a plate with a predetermined width; a predetermined amount of extinguishing agent (not shown) that fills the interior space of the chamber at a predetermined discharge pressure; and multiple nozzles (120) coupled to the exterior means and communicating with the interior space of the chamber in an upward and/or downward direction; and multiple sealing covers (130) made of a low melting point alloy so as to fill and seal the insides of the multiple nozzles (120), respectively, and, when heated to a predetermined temperature by a battery, melt to allow the extinguishing agent to be sprayed to the battery through the nozzles (120).

SYSTEM FOR MANAGING BATTERY MANUFACTURING PROCESS AND METHOD FOR OPERATING SAME

Resumen de: EP4575681A1

A battery manufacturing process management system according to an embodiment includes a battery cell dummy configured to obtain data regarding a battery manufacturing process and a controller configured to control at least one process variable related to the battery manufacturing process based on the data regarding the battery manufacturing process, obtained using the battery cell dummy.

ELECTRODE BINDER FOR LITHIUM-ION BATTERY

Resumen de: EP4576270A1

An electrode binder for a lithium-ion battery includes core-shell particles each of which includes a core and a shell layer located outside the core. The core is formed of rubber, and the shell layer is formed of a shell-forming polymer containing at least one type of monomer units selected from the group consisting of methacrylic acid units and (poly)alkylene glycol chain-containing (meth)acrylic ester units. The proportion of the methacrylic acid units in the shell-forming polymer is from 5 to 40 wt% or the proportion of the (poly)alkylene glycol chain-containing (meth)acrylic ester units in the shell-forming polymer is from 10 to 30 wt%.

SMELTING OF PYROLYZED BATTERY

Resumen de: EP4575017A1

The present patent application relates to a method of recovering valuable metals from waste batteries comprising- a pyrolysis step comprising pyrolysis of the waste batteries at a temperature of from about 700°C to about 1300°C, thus obtaining pyrolyzed batteries;- a size reduction step, comprising size reduction of the pyrolyzed batteries;- a smelting step, comprising smelting the pyrolyzed, size reduced waste batteries at temperatures of 1350°C or higher under oxidizing conditions. The method shows improved control of the smelting step and the temperature, reduces the amount of slag generated as well as the release of explosive gas.

POLYMER ELECTROLYTES AND METHODS TO PRODUCE THEM

Resumen de: EP4574854A1

The present invention relates to a polymer electrolyte for a battery cell comprising i) a first polymaleimide polymer comprising first polymaleimide repeat units, wherein the first polymaleimide repeat units are according to R<3>(Q)µ, wherein R<3>, individually, is a polyether or C(H)h(CxH2x+1)i((CH2)ψ)j(CH2OC(O)(CH2)σ)k, wherein i is between 0 and 2; j and k, individually, are between 0 and 4; h is 4 - i - j - k; h + i is between 0 and 2; x is between 1 and 6; ψ is between 1 and 10; σ is between 1 and 20; µ, individually, is at least 2; and Q, individually, is according to formula (I):wherein R<2>, individually, is C1-C16 alkyl, C2-C16 alkenyl, C2-C16 alkynyl or aryl; R<4>, individually, is H, C1-C16 alkyl, C2-C16 alkenyl, C2-C16 alkynyl; Q is covalently bound to R<3> via the sulphur atom of Q; ii) a second polymaleimide polymer comprising second polymaleimide repeat units according to formula (II)wherein R<1>, individually, is H, C1-C16 alkyl, C2-C16 alkenyl, C2-C16 alkynyl; m, individually, is 1 to 5; M<+> is independently an alkali metal ion; X, individually, is H, F, C1-C16 alkyl, C1-C16 fluoroalkyl.

METHODS FOR PREPARING LITHIUM TRANSITION METAL OXIDE FROM ELEMENTAL METAL FEEDSTOCKS AND PRODUCTS THEREOF

Resumen de: CN119894829A

Disclosed herein are methods of preparing lithium transition metal oxide cathode materials for secondary batteries and other applications from elemental feedstocks and products thereof. The methods disclosed herein may include mixing at least one transition metal in elemental form with a lithium source in a dry solid state mixing process followed by a sintering step to form a lithium transition metal oxide cathode material.

BATTERY STRUCTURE

Resumen de: CN119731842A

The invention relates to a battery structure comprising a protective device, a protective device for a battery housing and a fiber-matrix semi-finished product for producing the protective device.

LEAD STORAGE BATTERY

Resumen de: EP4576311A1

Disclosed is a lead-acid battery including: a positive electrode plate; a negative electrode plate; a separator interposed between the positive electrode plate and the negative electrode plate; and an electrolyte solution, in which the positive electrode plate includes a positive electrode material, the negative electrode plate includes a negative electrode material, the negative electrode material includes a Bi element, a content of the Bi element in the negative electrode material is 100 ppm or more and 300 ppm or less on a mass basis, the separator includes a crystalline region and an amorphous region, a ratio R represented by A₁/(A₁ + A₂) is 0.50 or more in an X-ray diffraction spectrum of the separator, A₁ is an area of a first diffraction peak having a maximum peak height among diffraction peaks corresponding to the crystalline region, and A₂ is an area of a second diffraction peak having a second highest peak height among the diffraction peaks corresponding to the crystalline region.

NEGATIVE ELECTRODE SLURRY FOR LITHIUM ION SECONDARY BATTERIES, NEGATIVE ELECTRODE FOR LITHIUM ION SECONDARY BATTERIES, AND LITHIUM ION SECONDARY BATTERY

Resumen de: EP4576269A1

A disclosed negative electrode slurry contains a negative electrode active material, a thickener, an antiseptic component, and a solvent. The thickener includes a carboxymethylcellulose salt. The solvent includes water. The antiseptic component includes a compound represented by the following formula (1), where R1 to R5 each independently represent a hydrogen atom or an alkoxy group, the total number of carbon atoms included in R1 to R5 is 3 or less, at least two of R1 to R5 represent hydrogen atoms, and at least one of R1 to R5 represents an alkoxy group.

NEGATIVE ELECTRODE SLURRY FOR LITHIUM-ION SECONDARY BATTERY, NEGATIVE ELECTRODE FOR LITHIUM-ION SECONDARY BATTERY, AND LITHIUM-ION SECONDARY BATTERY

Resumen de: EP4576268A1

A disclosed negative electrode slurry for a lithium ion secondary battery contains a negative electrode active material, a thickener, an antiseptic component, and a solvent. The thickener includes a carboxymethylcellulose salt. The solvent includes water. The antiseptic component includes an alkane polyol and a compound represented by the following formula (1), where R1 to R5 each independently represent a hydrogen atom or a hydrocarbon group, the total number of carbon atoms included in R1 to R5 is 4 to 6, and at least three of R1 to R5 represent hydrogen atoms.

BATTERY AND METHOD FOR MANUFACTURING BATTERY

Resumen de: EP4576403A1

A disclosed battery includes an electrode group formed by winding a first electrode and a second electrode with a separator interposed therebetween, and a first current collector plate 60 having at least one welded portion 63a welded to the first electrode. The first current collector plate 60 has at least a pair of magnetized portions 63b that are arranged to sandwich the welded portion 63a and are magnetized. A magnetic force of the welded portion 63a is smaller than a magnetic force of the magnetized portions 63b. This makes it possible to suppress an internal short circuit in the battery.

A METHOD FOR PRODUCING A CARBON MATERIAL FROM AGGLOMERATED LIGNIN

Resumen de: CN119731120A

The present invention relates to a method for producing an agglomerated lignin-thermoset resin material. The method includes the steps of providing lignin, providing at least one thermoset resin, forming an agglomerated lignin-thermoset resin material, and curing the agglomerated lignin-thermoset resin material. The invention also relates to a method for producing a carbon material comprising a heat treatment of the agglomerated lignin-thermoset resin material to obtain the carbon material. The obtained carbon material is suitable for use as an active material in a negative electrode of a secondary battery.

A METHOD FOR PRODUCING A CARBON MATERIAL FROM LIGNIN

Resumen de: CN119768366A

The present invention relates to a method for producing a carbon material, the method comprising the steps of providing lignin, providing at least one thermosetting resin, contacting the lignin with the at least one thermosetting resin to obtain a lignin-thermosetting resin material, curing the lignin-thermosetting resin material, and subjecting the cured lignin-thermosetting resin material to a heat treatment to obtain the carbon material. The obtained carbon material is suitable for use as an active material in a negative electrode of a secondary battery.

POLYMER ELECTROLYTES AND METHODS TO PRODUCE THEM

Resumen de: EP4574898A1

The present invention relates to a polymer electrolyte for a battery cell comprising a polymaleimide copolymer comprising i) first polymaleimide repeat units according R<3>(Q)µ, wherein R<3>, individually, is C(H)h(CxH2x+1)i((CH2)ψ)j(CH2OC(O)(CH2)σ)k or a polyether, wherein i is between 0 and 2; j and k, individually, are between 0 and 4; h is 4 - i - j - k; the sum of h and i is between 0 and 2; x is between 1 and 6; ψ is between 1 and 10; and σ is between 1 and 20; µ, individually, is at least 2; Q, individually, is according to formula (I):wherein R<2>, individually, is C1-C16 alkyl, C2-C16 alkenyl, C2-C16 alkynyl or aryl; R<4>, individually, is H, C1-C16 alkyl, C2-C16 alkenyl, C2-C16 alkynyl; Q is covalently bound to R<3> via the sulphur atom of Q; ii) second polymaleimide repeat units according to formula (II)wherein R<1>, individually, is H, C1-C16 alkyl, C2-C16 alkenyl, C2-C16 alkynyl; m, individually, is 1 to 5; M<+> is independently an alkali metal ion; X, individually, is H, F, C1-C16 alkyl, C1-C16 fluoroalkyl; wherein the first polymaleimide repeat units and the second polymaleimide repeat units are covalently bonded to one another.

PRODUCTION METHODS AND WORKING PRINCIPLE FOR THE PRE-EXPANSION OF CHALCOGENIDE-BASED ELECTRODES PRIOR TO THEIR REACTION WITH ALKALI/ALKALINE EARTH METALS

Resumen de: EP4576232A1

The present invention relates to the working principle and production methods for the pre-expansion of sulfur and/or other chalcogenides such as selenium or tellurium, and/or a mixture of any two or more. The present invention further relates an electrode/cathode comprising sulfur and/or a mixture of sulfur allotropes, for example, crystalline, glassy, amorphous, and/or polymeric (e.g., β-, γ-, and/or ω-phasic) sulfur and/or a mixture of any two or more sulfur allotropes, wherein the sulfur is photonically/electronically/thermally pre-expanded to a state where it has a density equivalent to a metal sulfide, such as Li2S. The expansion is carried out before electrode/cathode fabrication for the realization of alkali and/or alkali earth metal/ion batteries, such as LiS batteries. The resulting pre-expanded chalcogenides such as sulfur has an artificially generated internal cavities/porosity in addition to an open/external porosity, wherein the internal cavities limits and/or compensates the expansion of sulfur further or expansion partially/negligibly during chemical/electrochemical reactions, such as lithiation or sodiation, with mono, di, and trivalent metal ions. A thus fabricated electrode/cathode comprising pre-expanded sulfur and/or chalcogenides allows precise control over density and volume fluctuations and withstands the chemical and electrochemical reactions that occur during battery operation. Additionally, leads to improved performance, and longevity and offers s

HANDLING DEVICE AND METHOD FOR ASSEMBLING BATTERY UNIT

Resumen de: EP4576289A1

A handling device for battery units (B) comprises a vacuum chamber. The vacuum chamber comprises in turn a base plate (2) and an engaging portion (3). The base plate (2) presents a terminal connectable to a vacuum source and the engaging portion (3) defines at least one opening in fluid connection with the terminal. The engaging portion (3) is configured to engage in an airtight manner an open end of a vacuum bag (V) containing at least one battery unit (B) so that the vacuum chamber can be overall activated in a use configuration to remove air from the vacuum bag (V) compressing the battery unit (B).

IMPROVED CONTROL OF AN HETEROGENOUS ENERGY STORAGE SYSTEM

Resumen de: EP4574554A1

A computer system (210) for controlling an energy storage system (ESS, 200) with heterogenous battery packs (110) is provided. The system is configured to, using a processing circuitry (220): obtain pack-specific minimum and maximum allowed operating voltages (Vi,lim) for each battery pack; determine joint ESS-specific minimum and maximum voltage limits satisfying each of the respective pack-specific minimum and maximum allowed operating voltages for all of the battery packs; obtain actual state of charge, SoC, values (SOCi) for each battery pack; determine rescaled SoC values ( SOCi∗) by scaling the actual SoC value for a battery pack to a range defined by an estimated SoC value of the battery pack at the ESS-specific minimum and maximum voltage limits, and control the ESS using the rescaled SoC values for the battery packs. A corresponding ESS, vehicle, computerimplemented method and computer program product/storage medium are also provided.

CASE AND CELL MODULE HAVING THE SAME

Resumen de: EP4576369A1

A case used for storing cells includes a housing (10) and an upper cover (20). The housing (10) is provided with an accommodation chamber (11), a maintenance opening (12) is formed at a top of the housing (10), and the maintenance opening (12) is in communication with the accommodation chamber (11). The accommodation chamber (11) is used for accommodating the cells, and the maintenance opening (12) is arranged corresponding to the cells. The upper cover (20) is detachably arranged on the housing (10) and is able to cover the maintenance opening (12).

APPARATUS AND METHOD FOR CHARGING BATTERY

Resumen de: EP4576491A1

A battery charging apparatus according to an embodiment of the present disclosure includes a current output unit configured to output a charging current to a battery during a preset charging time; a voltage measurement unit configured to measure a voltage of the battery; and a control unit configured to calculate a voltage change amount of the battery during the charging time, calculate a delay time according to the difference between the charging time and a criterion time preset to correspond to the voltage change amount, and set a charging condition corresponding to the battery based on the calculated delay time.

SECONDARY BATTERY AND ELECTRONIC APPARATUS

Resumen de: EP4576303A1

A secondary battery includes a positive electrode, a negative electrode, a separator, and an electrolyte. The electrolyte includes a compound A represented by the following formula:R₁ to R₆ are each independently selected from a fluorine atom, a cyano group, a sulfo group, an aldehyde group, a substituted or unsubstituted C₁-C₆ alkoxy group, a substituted or unsubstituted C₁-C₆ alkyl group, a substituted or unsubstituted C₂-C₆ alkenyl group, a substituted or unsubstituted C₂-C₆ alkynyl group, a substituted or unsubstituted C₆-C₁₂ aryl group, and a substituted or unsubstituted C₆-C₁₂ aryloxy group. During substitution, substituents of the groups are each independently selected from a fluorine atom, a C₁-C₃ alkyl group, or a C₂-C₄ alkenyl group. A mass percentage of the compound A is 20% to 82% based on a mass of the electrolyte. The separator includes a base film and a porous coating provided on at least one surface of the base film, and a contact angle between the electrolyte and the surface of the porous coating of the separator is 0° to 36°.

BATTERY PACK AND ELECTRIC VEHICLE

Resumen de: EP4576338A1

The disclosure relates to the technical field of batteries and specifically provides a battery pack and an electric vehicle. The battery pack includes a box body (1) having a lower casing bottom plate (13), a cell stack (2) formed by stacking a plurality of pouch cells (23), a thermally conductive structural adhesive (25) arranged between the cell stack (2)and the lower casing bottom plate (13), side plates (24) arranged at both ends of the cell stack (2) in a stacking direction and adhered to main body surfaces of the pouch cells (23) at both ends, and fixture fitting portions arranged on surfaces of the side plates (24) opposite to the pouch cells (23). In the solution, a pouch cell to pack (CTP) battery pack is constructed based on the pouch cells, the cell stack formed by stacking the pouch cells can be well protected, and assembly can be easily performed.

POSITIVE ACTIVE MATERIALS, PREPARATION METHODS THEREOF, POSITIVE ELECTRODES, AND RECHARGEABLE LITHIUM BATTERIES

Resumen de: EP4574769A1

A method of preparing a positive electrode active material, a positive electrode and a rechargeable lithium battery are provided. The method of preparing the positive electrode active material includes mixing nickel-manganese-based composite hydroxide and a lithium raw material and subjecting them to primary heat treatment at about 200 °C to about 350 °C and secondary heat treatment at about 800 °C to about 1000 °C.

SEPARATOR AND ELECTROCHEMICAL DEVICE COMPRISING THE SAME, AND METHOD FOR PRODUCING THE SAME

Resumen de: EP4576386A2

Embodiments of the present disclosure relate to a separator in which each pore diameter (D10, D50, D90) satisfies all of 180 nm ≤ D10 ≤ 350 nm, 380 nm ≤ D50 ≤ 650 nm, and 670 nm ≤ D90 ≤ 1000 nm. The separator according to an example embodiment has improved heat resistance by satisfying the predetermined pore diameter ranges, and a battery comprising the separator may have improved performance.

BATTERY CELL, BATTERY, AND ELECTRIC APPARATUS

Nº publicación: EP4576322A1 25/06/2025

Solicitante:

CONTEMPORARY AMPEREX TECHNOLOGY HONG KONG LTD [HK]
Contemporary Amperex Technology (Hong Kong) Limited

Resumen de: EP4576322A1

The present application relates to a battery cell, a battery, and an electric apparatus. The battery cell comprises a housing, an electrode assembly, and a temperature acquisition member. The housing comprises a plurality of walls that define a first chamber, and at least one wall has a second chamber formed therein. The electrode assembly is accommodated in the first chamber. The temperature acquisition member is accommodated in the second chamber. By arranging the temperature acquisition member in the second chamber, the temperature acquired by the temperature acquisition member is more approximate to the actual temperature of the electrode assembly, thereby instantly reflecting the temperature rise of the electrode assembly and reducing the probability of thermal runaway of the battery cell.