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1197
resultados
Última actualización
17/08/2025 [07:30:00]
Resultados 900 a 925 de 1197
Resumen de: WO2025162390A1
The present disclosure relates to the field of batteries, and in particular to a negative electrode sheet and a battery. The negative electrode sheet comprises a negative electrode current collector and a negative electrode coating. A recessed portion is formed in the surface of the negative electrode coating away from the negative electrode current collector. The negative electrode coating comprises a negative electrode active substance, and the negative electrode active substance comprises silicon-based particles. A rectangular area A is intercepted from the section of the negative electrode sheet in the depth direction of the recessed portion. The rectangular area A comprises a recess, and the depth of the recess in the section is h. Four edges of the rectangular area A are A1, A2, A3 and A4, respectively, wherein A1 is parallel to A4, A2 is parallel to A3, A1 coincides with the surface of the negative electrode coating, the midpoint of A1 is the midpoint of an orthographic projection line formed by the recess on the surface of the negative electrode coating, the lengths of A1 and A4 are both 200 µm, and the lengths of A2 and A3 are both (h+10) µm. The number of the silicon-based particles in the rectangular area A is 0-60. The negative electrode sheet of the present disclosure can mitigate the problems of lithium precipitation and expansion.
Resumen de: WO2025162297A1
Provided in the present application are a negative electrode active particle and a preparation method therefor, and a negative electrode sheet, a battery and an electronic device. The negative electrode active particle of the present application comprises: a skeleton, which has a plurality of pores; and silicon particles, which are located in the plurality of pores, wherein there are gaps between the silicon particles and the inner walls of the pores, and the widths of the gaps range from 0.4 nm to 1 nm. The negative electrode active particle has a first X-ray diffraction pattern, and in the first X-ray diffraction pattern, the gaps and the silicon particles satisfy a relational expression 0.6≤Ia/Ib≤0.95, wherein Ia is the minimum value of diffraction intensity in the first X-ray diffraction pattern when 2θ ranges from 8.8° to 22°, Ib is the intensity of a diffraction peak of Si(111) in the first X-ray diffraction pattern when 2θ ranges from 28.2° to 28.5°, and 2θ is a diffraction angle. The negative electrode active particle of the present application has a low expansion rate and a high cyclic capacity retention rate.
Resumen de: WO2025161889A1
A polyimide material and a use thereof. The repeating unit of the polyamide material comprises a specific dianhydride residue and a specific diamine residue, which can ensure that the polyamide material has a porous structure having a pore diameter of less than or equal to 2 nm. The polyamide material is particularly suitable for coating a lithium battery negative electrode active material having a large volume expansion effect, and does not reduce the dynamic performance thereof.
Resumen de: WO2025161610A1
An electrolyte, a battery, and an electric device. The electrolyte comprises a lithium salt and a first additive, the first additive comprises a cyclic substance containing two sulfonic acid groups, and in the electrolyte, the range of the mass fraction w1 of the first additive satisfies: 0.01%≤w1≤2%.
Resumen de: WO2025161611A1
Provided are a negative electrode active particle and a preparation method therefor, a negative electrode sheet and a battery. Provided in the embodiments is a negative electrode active particle, which has a plurality of pores, wherein the length-diameter ratio α of the pores falls within the following range: 1≤α≤8. When the negative electrode active particle provided by the embodiments is applied to a battery, the battery is enabled to have a relatively high cycling capacity retention rate.
Resumen de: WO2025161313A1
A battery (200) and an electrical device (100), which apply to the technical field of traction batteries. The battery comprises: a housing (300), which is configured to accommodate battery cells (30); at least two fixing beams (71), wherein the at least two fixing beams are spaced apart in the housing, a space for accommodating the battery cells being formed between every two adjacent fixing beams; fixing seats (72) arranged on the fixing beams; and limiting members (73) which are connected to the fixing seats on different fixing beams. Connecting the limiting members to different fixing beams enables deformation of the fixing beams to be suppressed by means of the limiting members, thus enhancing the strength of the fixing beams, and reducing a degree of deformation of the fixing beams along with the expansion of the battery cells. By means of the provision of the fixing seats, the strength at the joints between the limiting members and the fixing beams is enhanced to reduce failures such as breakage at the joints between the limiting members and the fixing beams; thus, the strength of the fixing beams is further enhanced, thereby better suppressing the expansion of the battery cells, improving the performance of the battery, and reducing potential safety hazards.
Resumen de: WO2025161421A1
A battery tray (100), a battery pack and an electric device. The battery tray (100) comprises an annular frame (110), a support portion (120) provided at the bottom of the annular frame (110), and a bottom plate (200); a first adhesive tank (121) and a second adhesive tank (122) are formed in the support portion (120); the first adhesive tank (121) is configured to accommodate a first adhesive (300), the second adhesive tank (122) is configured to accommodate a second adhesive (400), and the second adhesive tank (122) is annular and is provided along the contour of the support portion (120); and the bottom plate (200) is connected to the support portion (120) in a sealed manner by means of the first adhesive (300) provided in the first adhesive tank (121) and the second adhesive (400) provided in the second adhesive tank (122). The battery tray (100) can improve the sealing level between the bottom plate (200) and the support portion (120), and meet various working conditions of a battery pack.
Resumen de: WO2025162100A1
Provided in the present application are a battery cell and an electric device. The battery cell comprises a laminated electrode assembly, wherein the electrode assembly comprises a plurality of first electrode sheets and a plurality of second electrode sheets, which are stacked in a first direction; a corner of each first electrode sheet has a first notch and a first empty foil area; a corner of each second electrode sheet has a second notch and a second empty foil area; when observed in the first direction, the first empty foil area at least partially overlaps with the second notch, the second empty foil area at least partially overlaps with the first notch, and the first empty foil area is spaced apart from the second empty foil area; and a plurality of first empty foil areas are stacked in the first direction, and a plurality of second empty foil areas are stacked in the first direction. Therefore, a space that is reserved between the electrode assembly and a housing and used for accommodating the first empty foil areas and the second empty foil areas can be reduced, the energy density of the battery cell can be improved, and when the battery cell is subjected to an external force or falls, the electrode assembly is less likely to shake relative to the housing, and the battery cell is also less likely to experience a short circuit.
Resumen de: WO2025162070A1
The present application discloses a battery cell, a secondary battery, and an electric device. The battery cell comprises a plurality of electrode sheets; each electrode sheet comprises a current collector and active substance coatings; the electrode sheet has a first region covered with the active substance coatings and a second region not covered with the active substance coatings; the first region is provided with a clearance notch; the second region forms a tab of the battery cell; among the plurality of stacked electrode sheets, for two adjacent electrode sheets, the first region of one electrode sheet is provided with a clearance notch so as to expose the second region of the other electrode sheet; the width of the electrode sheet is W mm, the area of the clearance notch is S1 mm2, the area of the second region is S2 mm2, and the thickness of the battery cell is H; when H is greater than 7 mm, S1+S2＜A*W is satisfied, and A is 3.6 mm; or, when H is less than or equal to 7 mm, S1+S2＜B*W is satisfied, and B is 1.6 mm. By means of such design, when a bare battery cell is formed by stacking, the tabs are accommodated in the main body region of the bare battery cell, and there is no need to perform multi-tab transfer welding, thereby improving space utilization; moreover, by setting the maximum value of S1+S2, it is ensured that the overall energy density of the battery cell is increased.
Resumen de: WO2025161765A1
The present application provides a heat exchange component, a battery, and an electric device. The heat exchange component comprises a heat exchange plate and a support member. A heat exchange channel is provided in the heat exchange plate. The support member is arranged in the heat exchange channel, and two ends of the support member are respectively connected to walls of the heat exchange channel. By providing the support member in the heat exchange channel, the pressure bearing capacity of the heat exchange plate is improved, the problems in the prior art of clogging in the heat exchange component, low heat exchange medium capacity of the heat exchange plate, and excessive weight of the heat exchange component, which are caused by using the solutions of increasing the wall thickness of the heat exchange channel and reducing the diameter of the heat exchange channel in order to maintain the pressure bearing capacity of the heat exchange component, are mitigated, the heat exchange effect and reliability of the heat exchange component are improved, and the energy density of the battery is increased.
Resumen de: WO2025161609A1
An electrolyte, a lithium-ion battery, and an electric device. The electrolyte comprises a borate additive, and the mass fraction w1 of the borate additive in the electrolyte falls within the range: 0.01%≤w1≤2%. The electrolyte further comprises a sulfur-containing additive, and the mass fraction w2 of the sulfur-containing additive in the electrolyte falls within the range: 0.01%≤w2≤2%. A ratio of the mass fraction w2 of the sulfur-containing additive to the mass fraction w1 of the borate additive falls within the range: 0.5≤w2/w1≤1.2.
Resumen de: WO2025161411A1
A secondary battery and a preparation method therefor, and an electric device. The secondary battery comprises a positive electrode sheet and a negative electrode sheet; the positive electrode sheet and/or the negative electrode sheet comprise a current collector (10) and an active material layer (11); the active material layer (11) is provided on at least one side of the current collector (10); the active material layer (11) comprises an additive, and the additive is provided with through holes; and the tortuosity of the active material layer (11) is 1.9-5.68. In this way, the transmission path of an electrolyte can be shortened, and the transmission rate of the electrolyte on the positive electrode sheet and/or the negative electrode sheet can be increased, thereby improving the infiltration effect of the electrolyte on the electrode sheet, improving the exertion of a capacity per gram of the electrode sheet, and improving the rate performance and the energy density of batteries.
Resumen de: WO2025161622A1
Disclosed in the present application are a thermal management component, a battery, and an electric device. The thermal management component is provided with a liquid intake flow channel, a first main flow channel, a second main flow channel, and a first group of flow channels and a second group of flow channels arranged side by side in a first direction, wherein in a second direction, the first main flow channel is provided with a first inflow end, and the second main flow channel is provided with a second inflow end, the second direction intersecting with the first direction; the first group of flow channels includes at least one first sub-flow channel, the first inflow end being in communication with the liquid intake flow channel through the first group of flow channels; the second group of flow channels includes at least one second sub-flow channel, the second inflow end being in communication with the liquid intake flow channel through the second group of flow channels; and in the second direction, the projection of the first group of flow channels falls within the projection of the first inflow end, and the projection of the second group of flow channels falls within the projection of the second inflow end. In the direction of liquid flow in the liquid intake flow channel, the second group of flow channels is located downstream of the first group of flow channels, and the sum of the cross-sectional areas of the second group of flow channels is greater than the sum of t
Resumen de: WO2025162064A1
Disclosed in the present application are a battery cell and an electrical device. The battery cell comprises a casing and a pressure relief assembly; the casing is provided with an accommodation space and a liquid injection hole communicated with the accommodation space; the pressure relief assembly covers the liquid injection hole; the pressure relief assembly comprises an adapter component, a sealing component and a pressure relief component; the casing, the adapter component, the sealing component and the pressure relief component are sequentially stacked in a first direction; the adapter component comprises a first main body part and a first weld mark part; the projection of the sealing component on the adapter component in the first direction is a first projection; the first projection is located within the first main body part; the first weld mark part is arranged around the peripheral side of the first projection; the first weld mark part and the first projection are spaced apart; and the first weld mark part is welded to the casing. The battery cell provided by the present application is highly safe.
Resumen de: WO2025162083A1
Disclosed in the present invention are a guide apparatus and a battery cell insertion device. The guide apparatus is used for guiding a battery cell into a battery case. The guide apparatus comprises a fixed guide member, at least one movable guide member, and a guide driving assembly, the guide driving assembly is transmittingly connected to the movable guide member, and the guide driving assembly is used for driving the movable guide member to move between at least a first state and a second state. When the movable guide member is in the first state, the movable guide member and the fixed guide member define a first guide channel; and when the movable guide member is in the second state, the movable guide member and the fixed guide member define a second guide channel, the width and/or the height of the cross section of the second guide channel and that of the cross section of the first guide channel are different, and a guide portion is separately formed at an inlet end of the first guide channel and an inlet end of the second guide channel so as to guide the battery cell to be assembled into the battery case. According to the guide apparatus, the operation of insertion of the battery cell into the battery case can be performed on batteries of different sizes and models, improving the production efficiency of the batteries of different sizes and models.
Resumen de: WO2025162058A1
A battery cell and an electric device. The battery cell comprises a case and a pressure relief assembly, wherein the case is provided with an accommodating space and an electrolyte injection hole in communication with the accommodating space; and the pressure relief assembly covers the electrolyte injection hole, and the pressure relief assembly comprises an adapter, a sealing member and a pressure relief member, the case, the adapter, the sealing member and the pressure relief member being stacked in sequence in a first direction, the adapter comprising a first main body portion and a first weld mark portion, the first main body portion being provided with a first side wall arranged in a circumferential direction, and the first weld mark portion connecting the first side wall to the case. The safety of the battery cell is improved.
Resumen de: WO2025161596A1
Provided in the present application is an electronic device, comprising a display screen, a middle frame, a battery and an adhesive layer structure, wherein the display screen and the battery are arranged on two opposite sides of the middle frame. The adhesive layer structure comprises a pressure-sensitive adhesive layer, a substrate layer, an electrically conductive metal layer and an electrically induced adhesion-reducing adhesive layer, which are stacked in sequence. The middle frame comprises a metal portion, and the adhesive layer structure is arranged between the middle frame and the battery, with one side of the pressure-sensitive adhesive layer being bonded to the battery, and one side of the electrically induced adhesion-reducing adhesive layer being bonded to the metal portion of the middle frame; and/or the adhesive layer structure is arranged between the middle frame and the display screen; alternatively, the middle frame is a plastic middle frame, and the adhesive layer structure is arranged between the middle frame and the display screen, with one side of the electrically induced adhesion-reducing adhesive layer being bonded to the display screen, and one side of the pressure-sensitive adhesive layer being bonded to the middle frame. In the electronic device, by means of using a special adhesive layer structure to bond and fix the battery or the display screen, the battery and the display screen can be easily detached from the electronic device, thereby avoiding
Resumen de: WO2025161353A1
Embodiments of the present disclosure relate to the technical field of batteries, and provide an adhesive tape attachment system, an adhesive tape attachment method, and a battery production line. The adhesive tape attachment system is provided with an assistance station for feeding and discharging, and the adhesive tape attachment system comprises adhesive tape attachment components and a transverse moving mechanism. The adhesive tape attachment components are each provided with an adhesive tape attachment position for adhesive tape attachment, and the number of the adhesive tape attachment components is two; the adhesive tape attachment positions of a plurality of adhesive tape attachment components are arranged in a first direction; the assistance station is arranged between at least two adjacent adhesive tape attachment components; among the two adjacent adhesive tape attachment components corresponding to the assistance station, the adhesive tape attachment position of one adhesive tape attachment component is a first adhesive tape attachment position, and the adhesive tape attachment position of the other adhesive tape attachment component is a second adhesive tape attachment position. The transverse moving mechanism is provided with two accommodating regions arranged in the first direction, and the transverse moving mechanism moves in the first direction, so as to drive one accommodating region to be switched between the first adhesive tape attachment position and the
Resumen de: WO2025161415A1
A battery cell (100), a battery (1100) and an electric device. The battery cell (100) comprises a casing (10), electrode assemblies (20) and adapters (30), wherein the casing (10) is provided with electrode terminals (40) for outputting or inputting electric energy; the electrode assemblies (20) are located in the casing (10), and each comprise a main body portion (21) and tabs (22) connected to an end portion of the main body portion (21); the adapters (30) are located in the casing (10), are provided with tab welding areas (31) configured to be welded to the tabs (22), and are further provided with terminal welding areas (32) configured to be welded to the electrode terminals (40); the tab welding areas (31) each comprise at least two tab welding sub-areas (311); and each terminal welding area (32) is located between two tab welding sub-areas (311).
Resumen de: WO2025161967A1
A negative electrode active material and a preparation method therefor, a negative electrode sheet, a lithium-ion battery, and an electric device. The lithium-ion battery comprises one or more battery cells (5), the battery cell (5) comprises a negative electrode sheet, the negative electrode sheet comprises a negative electrode current collector and a negative electrode film layer located on at least one surface of the negative electrode current collector, and the negative electrode film layer comprises a negative electrode active material. The negative electrode active material comprises an inner core and a coating layer located on at least part of the surface of the inner core, wherein the inner core comprises graphite, and the coating layer comprises hard carbon; and in the cumulative distribution curve of the R value of the negative electrode active material obtained in the area scanning mode of a laser microscopic confocal Raman spectrometer, from the lower limit, the R value of R50 having a cumulative distribution of 50% is 0.15-0.40. The negative electrode active material can make the battery have both a high energy density, and good dynamic performance and cycle performance.
Resumen de: WO2025161973A1
The present invention provides a lithium battery fast charging converter based on electrochemical impedance spectroscopy (EIS) measurement control and an adjustment method. Before charging, the initial voltage, current and temperature of a lithium battery are measured, and the lithium battery is charged on the basis of an initial state of the lithium battery; and during charging, a perturbation electrical signal formed by superimposing a direct current on a weak sine wave that does not affect the operation of the battery is sent to the lithium battery, EIS measurement and analysis of the lithium battery are performed by means of the EIS technology to obtain state information of the lithium battery, and charging parameters of the charging converter are adjusted on the basis of the state information of the lithium battery. By means of the solution provided by the present invention, the state of a lithium battery is monitored in real time by means of the EIS technology, and charging parameters are dynamically adjusted, so as to implement an efficient, fast and safe charging process.
Resumen de: WO2025161800A1
Embodiments of the present application provide an energy storage device and an energy storage system. The energy storage device comprises a container, and a plurality of battery clusters, a plurality of cluster control boxes, a liquid cooling unit, an air-to-liquid heat exchange plate, and a fan which are located in the container; the plurality of cluster control boxes are located in a power distribution compartment and are arranged in one row; the bottom walls of the plurality of cluster control boxes all face the bottom wall of the power distribution compartment, and are spaced apart from the bottom wall of the power distribution compartment to form an air inlet channel; the top walls of the plurality of cluster control boxes all face the top wall of the power distribution compartment, and are spaced apart from the top wall of the power distribution compartment to form an air outlet channel; and the air-to-liquid heat exchange plate is arranged in the power distribution compartment, is located outside the air inlet channel, and is arranged at an air inlet of the air inlet channel. The present application mitigates the overtemperature and derating risks caused by the use of air-to-air heat exchange in power distribution, reduces the power distribution cost of the energy storage device, solves the problem of complex control logic of the energy storage device, achieves accurate temperature control of an energy storage container device, and has an extremely simple system archit
Resumen de: WO2025161960A1
Provided in the present invention are a battery management system and method and an energy storage apparatus. The battery management system comprises micro-control units and a collection unit, wherein each micro-control unit is used for receiving and/or sending a control signal, the collection unit is used for collecting cell parameters, two ends of the collection unit are connected to the micro-control units, the collection unit comprises at least one cell management unit, each cell management unit is provided with an analog front end, each analog front end is used for connecting to one cell for collection of the cell parameters, there are two micro-control units and two cell management units, each cell management unit is connected to one micro-control unit, and the two micro-control units share parameter signals and the control signals. The battery management system of the present invention can manage each cell, so as to allow for more balanced workload of each component, thus reducing the risk of slave control failures; and the battery management system can fully use the two micro-control units, so as to make system operation safer and more reliable.
Resumen de: WO2025164423A1
According to the present invention, a positive electrode 23 has an antifluorite crystal structure and contains lithium oxide in which a transition metal is solid-solved, and an electrolyte solution 29 contains an additive. The additive includes at least one substance that is selected from the group consisting of a phosphoric acid ester, a sulfonic acid ester, a cyclic carbonic acid ester, a benzene derivative, and a radical scavenger. The concentration of the additive in the electrolyte solution is, for example, 0.01 mol/liter to 2.0 mol/liter inclusive.
Nº publicación: WO2025163801A1 07/08/2025
Solicitante:
MITSUBISHI JIDOSHA KOGYO KK [JP]
\u4E09\u83F1\u81EA\u52D5\u8ECA\u5DE5\u696D\u682A\u5F0F\u4F1A\u793E
Resumen de: WO2025163801A1
This battery module cooling structure comprises: a battery pack case (20) that has an internal space (20A) in which battery modules (30) are arranged side by side in a first direction, an air feed port (45B) to the internal space (20A), and an air discharge port (46C) to the internal space (20A); and partition parts (90) each of which extends in a horizontal second direction that intersects with the first direction, is disposed between adjacent battery modules (30), and is provided above on an inner bottom surface (51) of the battery pack case (20) in an upright manner so as to partition a lower space (20L). The partition parts (90) have a longer distance from one end on the side closer to the feed port (45B) in the second direction to one end of the internal space (20A) on the side closer to the feed port (45B) in the second direction as the partition parts (90) are disposed closer to the feed port (45B) with respect to the discharge port (46C) in the first direction.
BOPI
Sede Electrónica
