Resumen de: EP4578826A1
The present invention relates to a carbon nanotube dispersion and a preparation method thereof, wherein the carbon nanotube dispersion includes carbon nanotubes, a first dispersant which is a cellulose-based dispersant, a second dispersant containing hexafluoropropylene (HFP) as a repeating unit, and a solvent, and the carbon nanotube dispersion of the present invention has a low initial viscosity and a low viscosity change rate, and thus, is excellent in storage stability and processability.
Resumen de: EP4579934A1
A battery pack connector and a battery pack are provided. The connector may be configured to electrically connect a battery module inside the battery pack with an electric device outside the battery pack and include an insulation base (100) and a connection portion (200). The insulation base (100) may be provided with a first through hole (110). The connection portion (200) may be embedded in the first through hole (110) and fixed to the insulation base (100), and both ends of the connection portion (200) extend out of the insulation base (100).
Resumen de: EP4579843A1
An aluminum battery includes a positive electrode (120), a negative electrode (110), a separator, and an electrolyte (130). The separator is disposed between the positive electrode (120) and the negative electrode (110). The electrolyte (130) is impregnated into the separator, the positive electrode (120), and the negative electrode (110). The electrolyte (130) includes aluminum halide, ionic liquid, and an additive, and the additive includes an isocyanate compound.
Resumen de: EP4579862A1
This application discloses a battery cell, a battery (1), and an electric apparatus. The battery cell includes at least one electrode assembly (10). The electrode assembly (10) includes a positive electrode plate (11), a negative electrode plate (12), a separator (13), and a porous insulation layer (14). The positive electrode plate (11), the separator (13), and the negative electrode plate (12) are stacked and wound. At least a portion of the porous insulation layer (14) is disposed in a bent region (16) of the electrode assembly (10), and the porous insulation layer (14) is disposed between the positive electrode plate (11) and the separator (13) or disposed between the negative electrode plate (12) and the separator (13). Based on the above structure, the service life of the battery cell can correspondingly be prolonged, and the safety of the battery cell can correspondingly be improved.
Resumen de: EP4578825A1
The present invention provides a porous carbon-Ag composite comprising macro porous carbon particles and Ag particles inserted into pores of the carbon, a negative electrode comprising the composite, and a lithium-ion secondary battery comprising the negative electrode.
Resumen de: EP4579800A1
The present invention provides a negative electrode comprising a current collector and an active material layer, wherein the active material layer comprises carbon material particles and metal oxide particles, and a lithium-ion secondary battery comprising the negative electrode.
Resumen de: WO2024042275A1
The invention relates to a hydraulic thermal management module (10) for a cooling circuit (5) of an electric vehicle (3), the module comprising two hydraulic pumps (20, 21) and ten interfaces (A, B1, B2, D, E, F, G, H, I, K) forming fluid communication channels, wherein at least five of the interfaces can be opened and closed so as to enable the hydraulic thermal management module (10) to adopt at least four control configurations (P1). The invention also relates to a cooling circuit (5) comprising a hydraulic thermal management module (10). The invention further relates to a method for using the cooling circuit (5). Lastly, the invention relates to an electric vehicle (3) comprising such a hydraulic thermal management module (10) or such a cooling circuit (5).
Resumen de: CN119698713A
A system and method for flushing electrolyte from an electrolyte flushable battery device during a thermal runaway event. At least one condition of the electrolyte flushable battery device is monitored to detect a potential thermal runaway event as a function of the at least one condition exceeding a threshold. In response, an inlet valve and an outlet valve on the battery device are opened. The flushing liquid is flushed or pumped through the battery device, wherein the flushing liquid enters the device through the inlet valve and exits the device through the outlet valve. The irrigation liquid is then stored in the reservoir.
Resumen de: CN119790504A
The present invention relates to the use of a composition comprising a solvent system comprising a first component comprising one or more non-aqueous solvents and a second component comprising one or more performance additives as an electrolyte. Apparatuses and methods including the electrolyte compositions are also disclosed.
Resumen de: EP4579894A1
This application discloses a secondary battery and an electronic device. The secondary battery includes a housing, an electrode assembly, and a current collector plate. The current collector plate is electrically connected to the electrode assembly. The bottom of the housing includes a main body zone and a thinned zone connecting to the main body zone, and the thinned zone is electrically connected to the current collector plate. Area of the thinned zone accounts for 2% to 30% of total area of the bottom of the housing. In this application, the thinned zone is provided in a middle zone of the bottom of the housing and connects to the current collector plate via laser welding, so that the thinned zone can significantly reduce welding power during welding at the bottom, broadening a welding window and effectively improving welding yield at the bottom of the battery. In addition, the technical solution disclosed in this application has wide applicability and can be applied to housings of various sizes and thicknesses, all of which can implement a high welding yield.
Resumen de: EP4579838A1
Provided is a lithium ion secondary battery having high capacity and excellent high-temperature storage characteristics. A non-aqueous electrolyte secondary battery according to one embodiment is characterized by comprising a positive electrode, a negative electrode, a separator that separates the positive electrode and the negative electrode from each other, and a non-aqueous electrolyte, wherein: the positive electrode contains a lithium-containing composite oxide and a sulfonic acid compound present on a particle surface of the lithium-containing composite oxide; the sulfonic acid compound is represented by formula (I); the separator has a base material layer and a heat-resistant layer formed on the surface of the base material layer; the heat-resistant layer faces at least the positive electrode; and the thickness T1 of the base material layer and the thickness T2 of the heat-resistant layer satisfy the relationship T2/T1≥0.2. (In the formula, A is a group 1 element or a group 2 element, R is a hydrocarbon group, and n is 1 or 2.)
Resumen de: EP4579863A1
One embodiment of the present invention provides a nonaqueous electrolyte secondary battery (10) which comprises a positive electrode (11) that contains a lithium-containing transition metal composite oxide and a sulfonic acid compound that is present on the surfaces of particles of the composite oxide. The sulfonic acid compound is represented by formula (I). With respect to this nonaqueous electrolyte secondary battery, a negative electrode (12) comprises a negative electrode core body and a negative electrode mixture layer that is formed on the surface of the negative electrode core body; and the 1% proof stress of the negative electrode core body is 300 MPa or less.(In the formula, A represents a group 1 element or a group 2 element; R represents a hydrocarbon group; and n is 1 or 2.)
Resumen de: EP4579837A1
One embodiment of the present invention provides a nonaqueous electrolyte secondary battery (10) which comprises a positive electrode (11) that contains a lithium-containing transition metal composite oxide and a sulfonic acid compound that is present on the surfaces of particles of the composite oxide. The sulfonic acid compound is represented by formula (I). With respect to this nonaqueous electrolyte secondary battery, a negative electrode (12) comprises a negative electrode core body and a negative electrode mixture layer that is formed on the surface of the negative electrode core body; and the 1% proof stress of the negative electrode core body is 300 MPa or more.(In the formula, A represents a group 1 element or a group 2 element; R represents a hydrocarbon group; and n is 1 or 2.)
Resumen de: EP4579839A1
Provided is a non-aqueous electrolyte secondary battery, wherein discharge cycle characteristics are improved while ensuring high battery capacity. The non-aqueous electrolyte secondary battery according to the present disclosure includes a positive electrode, a negative electrode, and a non-aqueous electrolyte. The positive electrode includes a lithium-containing complex oxide and a sulfonic acid compound present on the particle surface of the complex oxide. The sulfonic acid compound is a compound represented by formula (I). The negative electrode includes at least a silicon-containing material as a negative electrode active material. The proportion of silicon-containing material in the negative electrode active material is 3% by mass or more. The discharge capacity of the negative electrode active material is 380 mAh/g or more. (In the formula, A is a Group 1 element or a Group 2 element; R is a hydrocarbon group; and n is 1 or 2.)
Resumen de: EP4579904A1
An electrochemical apparatus and an electronic apparatus are provided. The electrochemical apparatus includes a housing, an electrode assembly, and a first conductive plate. The housing includes a main body portion and a sealing structure. The main body portion includes a first end wall and a second end wall opposite each other in a first direction, a first wall and a second wall opposite each other in a second direction, and a first side wall and a second side wall opposite each other in a third direction. The sealing structure includes a first sealing portion connected to the first end wall and a second sealing portion connected to the first side wall. The first sealing portion is folded in a direction towards a junction between the first wall and the first end wall, and/or the second sealing portion is folded in a direction towards a junction between the first wall and the first side wall. The first conductive plate includes a first surface facing the first wall and a second surface facing the second wall. An insulation adhesive connects the first conductive plate and the first sealing portion and includes a first layer connected to the first surface and a second layer connected to the second surface. A second region of the second layer overlaps with the first layer, and a first region extends beyond the first layer from the second region towards the electrode assembly.
Resumen de: EP4579874A1
Some embodiments of this application provide a battery pack. The battery pack includes a first casing, a battery module, and a second casing. The first casing has a first opening. The battery module is accommodated in the first casing. The second casing is connected to the first casing, the second casing includes a first sub-casing and a second sub-casing, the first sub-casing is connected to the first casing and covers at least a part of the first opening, and the second sub-casing is connected to the first casing. The first sub-casing and/or the second sub-casing is configured to be openable.
Resumen de: EP4579891A1
An embodiment of the present invention relates to a method for manufacturing a secondary battery that includes an electrode assembly and a battery case provided to accommodate the electrode assembly and having a sealed edge, and the method may include a folding process of folding the edge, an attaching process of attaching an adhesive member to the folded edge, and a pressing process of pressing at least a partial area of a non-attachment area, to which the adhesive member is not attached, of the edge.
Resumen de: EP4579836A1
With respect to a nonaqueous electrolyte secondary battery (10) according to one embodiment of the present invention, a positive electrode (11) contains a lithium-containing transition metal composite oxide and a sulfonic acid compound that is present on the surfaces of particles of the composite oxide. The sulfonic acid compound is represented by formula (I). A negative electrode (12) contains, as negative electrode active materials, a carbon material and a silicon-containing material; and the content of the silicon-containing material is 3% by mass or less of the total mass of the negative electrode active materials.(In the formula, A represents a group 1 element or a group 2 element; R represents a hydrocarbon group; and n is 1 or 2.)
Resumen de: EP4579851A1
A nonaqueous electrolyte secondary battery includes a positive electrode, a negative electrode, and a nonaqueous electrolyte. The positive electrode includes a positive electrode active material. The positive electrode active material includes a lithium-containing composite oxide, and a sulfonic acid compound present on a surface of the lithium-containing composite oxide. The nonaqueous electrolyte contains a sulfur-containing compound.
Resumen de: EP4579938A1
A nonaqueous electrolyte secondary battery including a wound electrode group, a nonaqueous electrolyte, a battery case having a cylindrical shape and housing the electrode group and the nonaqueous electrolyte, a sealing body sealing an opening of the battery case, and an insulating plate disposed between the electrode group and a bottom of the battery case. The nonaqueous electrolyte contains a sulfur-containing compound. The insulating plate has an aperture, in which (A) the aperture rate of the insulating plate is 10% or more, or (B) the aperture has a plurality of mutually independent regions.
Resumen de: EP4579791A1
One embodiment of the present invention provides a nonaqueous electrolyte secondary battery (10) wherein a negative electrode (12) has a negative electrode mixture layer (41) which contains a silicon-containing material as a negative electrode active material, with the proportion of the silicon-containing material in the negative electrode active materials being 50% by mass or more. The negative electrode mixture layer (41) has a void fraction of 25% or more; and the value obtained by dividing the volume specific capacity by the void fraction is 40 mAh/cc·% or less.
Resumen de: EP4579835A1
One embodiment of the present invention provides a nonaqueous electrolyte secondary battery (10) wherein: a positive electrode (11) contains a lithium-containing transition metal composite oxide and a sulfonic acid compound that is present on the surfaces of particles of the composite oxide; and the sulfonic acid compound is represented by formula (I). With respect to a negative electrode (12) of this nonaqueous electrolyte secondary battery, the proportion of a silicon-containing material in a negative electrode active material is 50% by mass or more; and the value obtained by dividing the volume specific capacity of a negative electrode mixture layer (41) by the void fraction thereof is 48.0 mAh/cc·% or less. In the formula, A represents a group 1 element or a group 2 element; R represents a hydrocarbon group; and n is 1 or 2.
Resumen de: EP4579841A1
Provided are a gel polymer electrolyte separator, and a preparation method and use thereof, and relates to the technical field of lithium ion batteries. In the disclosure, the gel polymer electrolyte separator is prepared from raw materials including a masterbatch and an extractant, where the masterbatch includes the following components in mass percentage, based on a mass of the gel polymer electrolyte: 53% to 81% of an organic solvent, 10% to 21% of a polymer substrate, 6% to 19% of a pore-forming agent, and 1% to 8% of a nano-functional material; the polymer substrate is one or two selected from the group consisting of a polyvinylidene fluoride (PVDF) homopolymer and a PVDF-hexafluoropropylene (HFP) copolymer; and the nano-functional material is one or more selected from the group consisting of Al<sub>2</sub>O<sub>3</sub>, SiO<sub>2</sub>, TiO<sub>2</sub>, LLZO, LLZTO, LLTO, NASICON, LAGP, and LATP. The gel polymer electrolyte separator shows high mechanical strength and electrochemical properties.
Resumen de: EP4579816A1
A graphite negative electrode material, a preparation method therefor and an application thereof. The surface of the graphite negative electrode material is provided with a macroporous structure and a mesoporous structure. In the macroporous structure, the ratio R of depth H of the macropores to size D of the macropores satisfies 0 < R < 60, where R = H/D. In the mesoporous structure, the ratio r of depth h of the mesopores to size d of the mesopores satisfies 0 < r < 250, where r = h/d. The preparation method comprises: dispersing a pore-forming agent solution on the surface of graphite by means of a mechanical force, and carrying out heat treatment in a protective atmosphere to obtain the graphite negative electrode material. The pore-forming agent is water-soluble. The surface of the graphite negative electrode material is provided with a macroporous structure and a mesoporous structure at the same time. The hierarchical porous structure equips the base plane and the edge plane of the graphite material with channels capable of allowing lithium ions to quickly enter between graphite layers, and shorten the solid-phase diffusion path of lithium ions. Therefore, the charging rate of the graphite negative electrode material is improved, rapid charging is realized, the preparation process is safe and environment friendly, and the cost is low.
Nº publicación: EP4579258A1 02/07/2025
Solicitante:
PANASONIC IP MAN CO LTD [JP]
Panasonic Intellectual Property Management Co., Ltd
Resumen de: EP4579258A1
The disclosed method is a method for measuring the internal resistance of a battery. The measurement method includes a conduction step of charging or discharging the battery, a measurement step of measuring an open circuit voltage of the battery at the end time of the charging or discharging and thereafter, and a calculation step of individually calculating at least one resistance component included in the internal resistance, based on a voltage change of the open circuit voltage measured in the measurement step and a current value of current flowing through the battery for the charging or discharging at the end time. In the calculation step, the at least one resistance component is calculated based on a slope of a line obtained by plotting the voltage change in a graph in which a horizontal axis indicates a square root of an elapsed time from the end time and a vertical axis indicates the open circuit voltage.