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BATTERY MANAGEMENT SYSTEM AND OPERATION METHOD THEREOF

Resumen de: EP4564026A1

A battery management apparatus according to an embodiment disclosed herein includes a memory and a controller configured to determine whether battery data exceeds a threshold value and whether a mature time of battery data exceeding the threshold value exceeds a threshold time, perform diagnosis of the battery data based on a result of the determination, and record identification information of the battery data in the memory based on a result of the determination.

BATTERY MANAGEMENT DEVICE, AND METHOD FOR OPERATING SAME

Resumen de: EP4564034A1

A battery management apparatus according to an embodiment includes a first comparator configured to compare a voltage of a battery cell with a first reference voltage, a switching circuit configured to set a path in which the battery cell is electrically connected to an impedance calculation unit to a first path or a second path, based on a comparison result of the first comparator, and the impedance calculation unit configured to calculate an impedance of the battery cell based on a first voltage applied through the first path or a second voltage applied through the second path.

CLEANING APPARATUS AND STIRRING DEVICE

Resumen de: EP4563252A1

The present application relates to a cleaning apparatus (100) and a stirring device (1000). The cleaning apparatus comprises a mounting base (110), nozzles (120) and a driving mechanism (130). The mounting base (110) is configured to be rotatable around a set direction. The nozzles (120) are arranged on the mounting base, and the driving mechanism (130) is arranged on the mounting base (110) and used for driving the nozzles (120) to swing relative to the mounting base (110). The cleaning apparatus (100) and stirring device (1000) of the present application feature good cleaning effect and high cleaning efficiency.

NONAQUEOUS ELECTROLYTE SECONDARY BATTERY

Resumen de: EP4564577A1

The present invention provides a nonaqueous electrolyte secondary battery which is provided with: an electrode body that is obtained by winding a positive electrode and a negative electrode, with a separator (13) being interposed therebetween; and an outer package that contains the electrode body. With respect to this nonaqueous electrolyte secondary battery, the separator (13) comprises a base material layer (30) and a functional layer (32) that is formed on the base material layer (30); the functional layer (32) comprises a heat-resistant layer (34) which contains a heat-resistant resin and inorganic particles, and resin particles (36) which are dispersed in the heat-resistant layer (34) and have an average particle diameter that is larger than the thickness of the heat-resistant layer (34); and the resin particles (36) each have a projection part (36a) which protrudes from the surface of the heat-resistant layer (34).

NEGATIVE ELECTRODE FOR NONAQUEOUS ELECTROLYTE SECONDARY BATTERIES, AND NONAQUEOUS ELECTROLYTE SECONDARY BATTERY

Resumen de: EP4564458A1

A negative electrode (12) for nonaqueous electrolyte secondary batteries according to the present invention comprises a negative electrode collector (30) and a negative electrode mixture layer (32) that is formed on the negative electrode collector (30); the negative electrode mixture layer (32) comprises a first negative electrode mixture layer (34) and a second negative electrode mixture layer (36), which are arranged on the negative electrode collector (30); the first negative electrode mixture layer (34) contains an Si-based material and graphite particles A; the second negative electrode mixture layer (36) contains an Si-based material and graphite particles B that have a lower internal void fraction than the graphite particles A; and the ratio (T1/T2) of the thickness (T1) of the first negative electrode mixture layer 34 to the thickness (T2) of the second negative electrode mixture layer (36) is not less than 1.05 but less than 1.20.

BATTERY PACK

Resumen de: EP4564567A1

A battery pack includes: a plurality of batteries (30) each of which includes a cap (45) of a sealing body as a positive external terminal on one side of the battery in a Z direction, the battery causing an internal gas to be exhausted from the one side when an internal pressure increases; a first holder (50) that holds the one side of each of the plurality of batteries (30) that are arranged in alignment, the first holder (50) including an opening (52) through which the cap (45) is exposed; and a current collector plate (60) that abuts one surface of the first holder (50), and is connected to the cap (45) while blocking a portion of the opening (52). At least a portion of the one surface of the first holder (50) that abuts the current collector plate (60) includes a groove (53) for exhausting, to an outside of the first holder (50), the internal gas exhausted from the portion of the opening (52) blocked by the current collector plate (60).

BATTERY PACK

Resumen de: EP4564566A1

The present invention includes: a battery on which a cap that is a top surface of a sealing assembly and serving as an external terminal is provided on one side in a Z-axis direction and from which an internal gas is exhausted on the one side in the Z-axis direction when an internal pressure increases; a first holder that holds an end on the one side in the Z-axis direction of each of a plurality of the batteries aligned and includes an opening through which the cap is exposed; and a current collector that is provided on the one side of the first holder, partially covers the opening, and is connected to the cap. A first protrusion is formed on a surface of the first holder that is located on the one side in the Z-axis direction. The current collector is provided on the first holder in abutment with the first protrusion to form spacing between the current collector and the surface of the first holder that is located on the one side in the Z-axis direction.

TEMPERATURE-SENSITIVE HOUSING FOR A BATTERY CELL

Resumen de: EP4564543A1

The present disclosure refers to a temperature-sensitive housing for a battery cell. The present disclosure is further related to a battery module having several battery cells accommodated in the temperature-sensitive housing according to the present disclosure. Also, the disclosure is related to a battery system using the battery module, the battery system allowing for an accurate monitoring of the temperature state of the battery cells. Moreover, the present disclosure relates to a method for detecting a thermal event occurring in a battery cell equipped with a temperature-sensitive housing.

ELECTROCHEMICAL CELL DEVICE, MODULE, AND MODULE HOUSING DEVICE

Resumen de: EP4564490A1

An electrochemical cell device includes a plurality of electrochemical cells arranged in a first direction, and including a first cell and a second cell. The plurality of electrochemical cells each include an element portion, a support body, and a fixing material. The support body supports the element portion. The fixing material fixes the element portion and the support body. The first cell is different from the second cell in a position of the fixing material when viewed in a plan view in the first direction.

BATTERY PACK

Resumen de: EP4564565A1

The present invention includes: a battery on which a cap of a sealing assembly is provided on one side in a Z-axis direction as an external terminal; a first holder that holds an end on the one side in the Z-axis direction of each of a plurality of batteries aligned and includes an opening through which the cap is exposed; and a current collector that abuts one surface of the first holder at an abutment part and is connected to the cap exposed through the opening. The current collector protrudes on one side in a longitudinal direction beyond the abutment part, partially seals the opening, and is connected to the cap. A part of the current collector that partially seals the opening protrudes on the one side in the Z-axis direction beyond a surface of the first holder that is located on the one side in the Z-axis direction, to form a space between the abutment part, the part of the current collector that partially seals the opening, and the cap.

SLURRY COMPOSITION FOR NONAQUEOUS SECONDARY BATTERY POSITIVE ELECTRODES, POSITIVE ELECTRODE FOR NONAQUEOUS SECONDARY BATTERIES, AND NONAQUEOUS SECONDARY BATTERY

Resumen de: EP4564469A1

Provided is a slurry composition for a non-aqueous secondary battery positive electrode that has excellent dispersibility and that can cause a positive electrode mixed material layer to display excellent adhesiveness and water shedding ability. The slurry composition for a non-aqueous secondary battery positive electrode contains carbon coating layer-covered olivine-type lithium iron phosphate particles in which surfaces of olivine-type lithium iron phosphate particles are at least partially covered by a carbon coating layer and a polymer X including an acidic group-containing monomer unit in a proportion of not less than 3 mass% and not more than 40 mass%. Surfaces of the carbon coating layer-covered olivine-type lithium iron phosphate particles have a weak acid group content of not less than 5 µmol/g and not more than 15 µmol/g.

NONAQUEOUS ELECTROLYTE SECONDARY BATTERY

Resumen de: EP4564515A1

A nonaqueous electrolyte secondary battery according to the present disclosure includes an electrode group including a positive electrode 5, a negative electrode 6, and a separator 7, the electrode group having a wound structure. The electrode group satisfies at least one configuration selected from the group consisting of the following (A) and (B): (A) the electrode group includes an insulating protective tape 9 at at least one end portion of the negative electrode 6 in the longitudinal direction of the negative electrode 6, the insulating protective tape 9 being adhered to a region 60 extending from a face of a negative electrode active material layer 6b facing the separator 7 to an exposed portion of a negative electrode current collector 6a via an end face of the negative electrode active material layer 6b; and (B) the electrode group includes an insulating protective tape in a region of the negative electrode 6 facing a positive electrode lead portion of the positive electrode 5, the insulating protective tape being adhered to the face of the negative electrode active material layer 6b facing the separator 7. The substrate of the protective tape 9 is a microporous resin-based membrane that has a compression deformation ratio of 30% or more and 50% or less when a load of 50 kg/cm² is applied thereto.

POSITIVE ELECTRODE ACTIVE MATERIAL FOR NON-AQUEOUS ELECTROLYTE SECONDARY BATTERIES, AND NON-AQUEOUS ELECTROLYTE SECONDARY BATTERY

Resumen de: EP4564478A1

A positive electrode active material 32 according to an example of an embodiment of the present invention contains first composite oxides 33 and second composite oxides 34. The first composite oxides 33 are secondary particles each formed by aggregation of primary particles having an average particle diameter of less than or equal to 0.3 µm, and the second composite oxides 34 includes primary particles of greater than or equal to 0.5 µm. D50a of the first composite oxides 33 is larger than D50b of the second composite oxides 34. The ratio of the mean cross-section area (Sb) of the second composite oxides 34 with respect to the mean cross-section area (Sa) of the primary particles 35 constituting the first composite oxides 33 satisfies the condition 80 ≤ (Sb/Sa) ≤ 600.

POSITIVE ELECTRODE ACTIVE MATERIAL

Resumen de: EP4564481A1

A positive electrode active material for a lithium secondary battery contains a composite oxide containing one or more kinds of elements selected from the following element group 1 and one or more kinds of elements selected from the following element group 2 and satisfies the following requirements (1) to (3):element group 1: Ni, Co, Mn, Fe, Al, and P; andelement group 2: Li, Na, K, Ca, Sr, Ba, and Mg,requirement (1): the active material contains fluorine, sulfur, and potassium, and a total amount of fluorine, sulfur, and potassium is 0.12 to 10.0 mass%;requirement (2): when a concentration of potassium in the active material is defined as CK (mass%) and a concentration of sulfur is defined as CS (mass%), CK/CS is 0.0001 to 2.0; andrequirement (3): when a concentration of fluorine in the active material is defined as CF (mass%) and a concentration of sulfur is defined as CS (mass%), CF/CS is 0.0001 to 20.0.

METHOD FOR PRODUCING POSITIVE ELECTRODE ACTIVE MATERIAL

Resumen de: EP4564524A1

A method for producing a positive electrode active material including the following steps:(1) mixing an activation agent containing one type or two or more types of alkali metal compounds with an electrode material mixture which contains a positive electrode active material, a binder, and an electrolyte and from which at least a part of the electrolyte has been removed by contact with an electrolyte cleaning solvent to obtain a mixture;(2) heating the mixture at a retention temperature equal to or higher than a melting start temperature of the activation agent;(3) bringing the mixture after step (2) into contact with a water-containing liquid to obtain a slurry containing a solid component and a liquid component, and then separating the slurry into a solid component and a liquid component;(4) removing water from the obtained solid component by subjecting the solid component to heating and/or a reduced-pressure environment, wherein an ambient pressure at which the solid component exists and/or a temperature of the solid component is changed so that a ratio of saturated water vapor pressure at the temperature of the solid component to the ambient pressure becomes 80% or more within 24 hours after the slurry is separated into the solid component and the liquid component; and(5) heat-treating the solid component after step (4) at lower than 900°C.

PRODUCTION METHOD FOR POSITIVE ELECTRODE ACTIVE MATERIAL

Resumen de: EP4564523A1

A method for producing a positive electrode active material, including the steps of:(1) bringing an electrode mixture containing a positive electrode active material, a binder, and an electrolyte into contact with an electrolyte cleaning solvent to obtain a slurry containing a solid component and a liquid component, and then separating the slurry into the solid component and the liquid component, wherein an amount of P in the liquid component after separation is 0.0020 to 2.0 mass%, an amount of F in the liquid component after separation is 0.01 to 7.0 mass%, and an amount of P remaining in the solid component after separation is 0.7 mass% or less;(2) mixing an activation treatment agent containing one type or two or more types of alkali metal compounds with the separated solid component; and(3) heating a mixture obtained to a holding temperature equal to or higher than a melting start temperature of the activation treatment agent to activate the positive electrode active material contained in the mixture.

IMPURITY DETECTION SUPPORT DEVICE, IMPURITY DETECTION SUPPORT METHOD, AND TEST LIQUID PROCESSING SYSTEM

Resumen de: EP4563992A1

An impurity detection support device 100 comprises: a pipeline 102 through which a test liquid flows; a pair of electrodes disposed so as to be capable of applying an alternating-current voltage to, or capable of superimposing an alternating current onto the test liquid between a first position and a second position in the pipeline 102; a power source unit 106 for applying the alternating-current voltage, having a frequency fixed to a predetermined usage frequency, or superimposing the alternating current, having a frequency fixed to the usage frequency, between the pair of electrodes; a measuring unit 108 for measuring a current or a voltage generated between the pair of electrodes; and a calculating unit 110 for calculating a resistance of the test liquid using a measurement result from the measuring unit 108. The usage frequency is determined on the basis of the resistance of the test liquid measured by an alternating current impedance method, or a resistance of a reference liquid that does not include any impurities.

POSITIVE ELECTRODE ACTIVE MATERIAL FOR SECONDARY BATTERY, AND SECONDARY BATTERY

Resumen de: EP4564477A1

A positive electrode active material for a secondary battery includes a lithium metal composite oxide having a crystal structure assignable to a space group Fm-3m. The lithium metal composite oxide includes at least Li and Mn. The lithium metal composite oxide has a crystallite size of 1 nm to 100 nm or less.

CYLINDRICAL BATTERY

Resumen de: EP4564564A1

This cylindrical battery comprises an electrode body, an electrolyte, an exterior can having a bottomed tubular shape for accommodating the electrode body and the electrolyte, and a sealing body for sealing an opening of the exterior can. A bottom section (68) of the exterior can includes two linear stamped grooves (31, 32) that have an intersection point (61). At a corner portion set between the two linear stamped grooves (31, 32), an inclined surface (41) is formed such that the width of the bottom section (68) decreases the closer the same is to the intersection point (61).

PRISMATIC BATTERY AND BATTERY PACK USING SAME

Resumen de: EP4564549A1

A prismatic battery according to the present disclosure includes: a metal container 10; a sealing member 30 including an insulating packing 32 in contact with the container 10; and an electrode group 20 housed in the container 10, wherein the container 10 includes a prismatic body portion 12 including a bottom face 12t and a sealing portion 14 continuing from the body portion 12, where the sealing member 30 is attached to the sealing portion 14, a quadrangle having the smallest area surrounding a cross-section of the body portion 12, the cross-section being perpendicular to a direction of the body portion from the bottom face to the sealing portion 14, is a rectangle having long sides and short sides, and the sealing portion 14 has an elliptical shape or an oval shape.

LITHIUM SECONDARY BATTERY AND METHOD FOR PRODUCING SAME

Resumen de: EP4564502A1

A lithium secondary battery 100 of the present disclosure includes: a positive electrode 5 including MnO₂; a negative electrode 6 including a negative electrode active material with lithium ions occluded; and an electrolytic solution including a mixed solvent of a cyclic carbonate and a chain carbonate, the electrolytic solution being impregnated into the positive electrode 5 and the negative electrode 6. The negative electrode active material includes, for example, at least one selected from the group consisting of graphite and silicon. The cyclic carbonate includes, for example, at least one selected from the group consisting of ethylene carbonate and vinylene carbonate. The chain carbonate includes, for example, ethyl methyl carbonate.

Porous spherical cobalt oxide particle and preparation method thereof

Resumen de: GB2635890A

Disclosed are a porous spherical cobalt oxide particle and a preparation method therefor. The preparation method comprises the following steps: (1) mixing a cobalt salt solution, thiourea, and urea to form a mixed solution; (2) heating the mixed solution in step (1) and performing a reaction under an aerobic atmosphere; (3) performing solid-liquid separation, and roasting the obtained solid product under an aerobic atmosphere to obtain a roasted material; and (4) washing and drying the roasted material obtained in step (3) to obtain the porous spherical cobalt oxide particle. The cobalt oxide particle prepared by the preparation method has a relatively large specific surface area, which can significantly increase the specific capacity of a battery.

POSITIVE ELECTRODE ACTIVE MATERIAL

Resumen de: EP4564480A1

A positive electrode active material for a lithium secondary battery contains a plurality of secondary particles in which a plurality of primary particles are aggregated and satisfies the following requirements:(1) the secondary particles each internally have a plurality of voids, a value at a cumulative frequency of 50% in an area-based cumulative frequency distribution of equivalent circle diameters of the voids based on cross-sectional images of the secondary particles is more than 0.2 µm and 0.65 µm or less, and a value at a cumulative frequency of 50% in an area-based cumulative frequency distribution of circularity of the voids based on cross-sectional images of the secondary particles is 2.2 or more and 6.5 or less; and(2) the primary particles are an oxide containing one or more types of elements selected from the following element group 1 and one or more types of elements selected from the following element group 2:element group 1: Ni, Co, Mn, Fe, Al, and P; andelement group 2: Li, Na, K, Ca, Sr, Ba, and Mg.

METHOD FOR PRODUCING POSITIVE ELECTRODE ACTIVE MATERIAL

Resumen de: EP4564522A1

A method for producing a positive electrode active material including the following steps of:(1) mixing an activation agent containing at least one type of compound selected from the group consisting of a potassium compound and a sodium compound with an electrode material mixture which contains a positive electrode active material, a binder, and an electrolyte and from which at least a part of the electrolyte has been removed by contact with an electrolyte cleaning solvent;(2) heating the obtained mixture to a retention temperature equal to or higher than a melting start temperature of the activation agent to activate the positive electrode active material contained in the mixture; and(3) bringing the mixture after heating into contact with a water-containing liquid to obtain a slurry containing a solid component and a liquid component, and then separating the slurry into a solid component and a liquid component, in which a total content of potassium and sodium in the liquid component after separation is 0.090 to 2.0 mass% and a total content of potassium and sodium in the solid component after separation is 1.2 mass% or less.

SECONDARY BATTERY

Nº publicación: EP4564493A1 04/06/2025

Solicitante:

PANASONIC ENERGY CO LTD [JP]
Panasonic Energy Co., Ltd

Resumen de: EP4564493A1

A secondary battery includes a wound-type electrode group 20 configured of a first electrode 21 and a second electrode 25 wound with a separator 29 therebetween, each of which has a sheet shape that is long in a first directional D1. The first electrode 21 includes a first current collector 22 having sheet shape that is long in the first directional D1. The first current collector 22 includes a first exposed portion 23 located at one end thereof in a second direction D2 perpendicular to the first direction D1. The secondary battery further includes a first current collecting member connected to the first exposed portion 23 to be conductive to the first current collector 22. A plurality of first slits 23a are formed in an area of the first exposed portion 23 located between the opposite ends thereof in the second directional D2. The first slits 23a are not formed at the opposite ends of the first exposed portion 23 in the second directional D2. Accordingly, stress at the joint generated during charging and discharging can be reduced.