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Updated on
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Results 50 to 75 of 728
Absstract of: EP4794132A1
0001 Provided in the present application are a connector (400), a battery (100), an electrical device, and an energy storage device. The connector (400) comprises a plug (410) and a protective cover (420), the protective cover (420) being provided with an accommodation cavity (421), an opening portion (422) being formed at the cavity opening of the accommodation cavity (421), and the plug (410) being accommodated in the accommodation cavity (421). When the plug (410) is inserted into a plugging port (31), the opening portion (422) covers a socket (30), such that the plugging port (31) is located inside the accommodation cavity (421). With respect to the connector (400) provided in the embodiments of the present application, the protective cover (420) can cover the plug (410) to achieve the purposes of dustproofing and waterproofing, and moreover, the opening portion (422) of the protective cover (420) can cover the socket (30) and provide covering protection for the plugging port (31) of the socket (30), thereby effectively reducing the probability of water seepage at the plugging port (31), and further improving the reliability of the connector (400) and the plugging port (31).
Absstract of: EP4794003A1
A negative electrode sheet, a battery cell and an electric device. The negative electrode sheet comprises a negative electrode current collector and a negative electrode film layer arranged on at least one side of the negative electrode current collector; the negative electrode film layer comprises at least one negative electrode active material layer containing a negative electrode active material, one of the at least one negative electrode active material layer comprises a first area and a second area, and in the thickness direction of the negative electrode sheet, the first area at least covers the two ends of the negative electrode current collector in a first direction; the thickness direction is perpendicular to the first direction; the second area and the first area are continuously arranged in the first direction, the second area is sandwiched in the first area, and the second area covers part of the negative electrode current collector in the thickness direction; the compaction density of the negative electrode active material located in the first area is Ag/cm3, the compaction density of the negative electrode active material located in the second area is Bg/cm3, and B/A<1.
Absstract of: EP4793232A1
Provided are a preparation method for lithium iron phosphate, a positive electrode active material, a positive electrode plate, a battery, and a power-consuming device. The preparation method for lithium iron phosphate comprises: dissolving a first iron source, a second iron source, a lithium source and a phosphorus source in a solvent to obtain a mixed slurry; and sintering the mixed slurry to obtain lithium iron phosphate, wherein the first iron source comprises at least one of iron oxide or first iron phosphate, and the second iron source comprises at least one of second iron phosphate or ferrous oxalate, the first iron phosphate has an iron to phosphorus ratio of 0.97-0.985, and the second iron phosphate has an iron to phosphorus ratio of 0.93-0.96. The primary particles of lithium iron phosphate, which have different particle sizes, can be mixed and matched, thus improving the compaction density of lithium iron phosphate and the energy density of the battery.
Absstract of: EP4794026A1
0001 The present application relates to a positive electrode active material and a preparation method therefor, a positive electrode sheet, a secondary battery, and an electric device. The positive electrode active material comprises an active substance; the active substance comprises a lithium nickel manganese oxide; the lithium nickel manganese oxide comprises a spinel phase; in an X-ray diffraction analysis pattern of the lithium nickel manganese oxide, there is a first diffraction peak at a diffraction angle 2θ of 18° to 19° and a second diffraction peak at a diffraction angle 20 of 44° to 45°; the first diffraction peak corresponds to a crystal face (111), and the second diffraction peak corresponds to a crystal face (400); the peak intensity of the first diffraction peak is I<(111)>, the peak intensity of the second diffraction peak is I<(400)>, and I<(111)> and I<(400)> satisfy: 2.5 ≤ I<(111)>/I<(400)> ≤ 4.0; and the lithium nickel manganese oxide satisfies the chemical formula Li
Absstract of: EP4794002A1
An electrode sheet, a secondary battery, an electric device, a preparation method, and a reuse method. The electrode sheet comprises a current collector and multiple active material layers located on at least one side of the current collector; the multiple active material layers comprise a first active material layer and a second active material layer, wherein the second active material layer is the active material layer farthest from the current collector, and the first active material layer is located between the second active material layer and the current collector, and comprises current collector particles.
Absstract of: EP4794108A1
0001 A vehicle (1) having a battery pack (10), the battery pack (10) having a busbar (200). The busbar (200) comprises: a non-conductive sealing pressing plate (2003), a first connecting component (2001), and a second connecting component (2002). The first connecting component (2001) is disposed at a first end of the non-conductive sealing pressing plate (2003), and the second connecting component (2002) is disposed at a second end of the non-conductive sealing pressing plate (2003), the first connecting component (2001) being electrically connected to the second connecting component (2002).
Absstract of: EP4794049A1
0001 This application discloses a secondary battery and an electronic device. The secondary battery includes a packaging bag, an electrode assembly, a first tab, a first insulation tape, and a second insulation tape. The electrode assembly is accommodated in the packaging bag. The first tab is electrically connected to the electrode assembly and protrudes out of the packaging bag along a first direction. The electrode assembly assumes a jelly-roll structure and includes a first end surface, a first side surface, a first curved surface, and a second side surface. The first side surface, the first curved surface, and the second side surface are disposed around a periphery of the first end surface. The first insulation tape includes a tape body and a first protruding portion. The tape body is bonded to the first side surface, the first curved surface, and the second side surface separately. The first protruding portion exceeds a negative electrode plate of the electrode assembly along the first direction. The first protruding portion includes a first section and a second section. The second insulation tape is bonded to the first end surface, the first section, and the second section separately. In this way, this application can improve the hot box test pass rate of the secondary battery.
Absstract of: EP4794096A1
A battery pack according to an embodiment of the present invention includes a module assembly including a plurality of battery modules each including, on a side, a module opening through which venting gas is discharged, a pack cover facing the module opening and configured to cover the side of the module assembly, and an oxygen introduction preventing member located in a space formed between the module assembly and the pack cover and configured to prevent oxygen from being reversely introduced after venting gas is discharged in an extension direction of the space.
Absstract of: EP4794083A1
0001 The present application relates to the technical field of batteries, and in particular to a battery assembly and an electrical apparatus. The battery assembly includes: a battery, including a top surface, a bottom surface, and side surfaces; and a separation structure wrapped around an outer side of the battery, the separation structure including a first conductive layer and an insulating separation layer. The first conductive layer covers at least part of the bottom surface of the battery and at least part of the side surfaces of the battery. The insulating separation layer includes a separation main body portion and a pulling portion connected to the separation main body portion. A tear guide structure is provided between the separation main body portion and the pulling portion, the separation main body portion covers the first conductive layer and is connected to the first conductive layer, and the pulling portion is bonded to the top surface of the battery. The pulling portion is configured such that, when a pulling force is applied to the pulling portion, the pulling portion is separated from the top surface of the battery, and the first conductive layer on the side surfaces of the battery is exposed at the battery. At least part of the insulating separation layer is formed of a conductive release adhesive. The technical solution provided in the present application can effectively solve the problem in the related art of the battery being difficult to remove from
Absstract of: EP4794113A1
0001 An electrolyte injection system (100) and an electrolyte injection method. The electrolyte injection system (100) comprises an electrolyte injection device (110), an upper computer (120) and a control device (130), wherein the electrolyte injection device (110) comprises at least one electrolyte injection pump (111); the control device (130) is configured to send to the upper computer (120) pump information of a target electrolyte injection pump (111a) currently to be subjected to electrolyte preparation in the electrolyte injection device (110); the upper computer (120) is configured to: acquire pump information from the control device (130), determine, on the basis of the pump information and from among bearing positions of a battery cell tray currently entering the electrolyte injection device (110), a target bearing position currently corresponding to the target electrolyte injection pump (111a), determine, on the basis of a first correlation, a target electrolyte injection parameter corresponding to the target bearing position, with the first correlation comprising electrolyte injection parameters respectively corresponding to at least one bearing position, and issue the target electrolyte injection parameter to the target electrolyte injection pump (111a); and the target electrolyte injection pump (111a) is configured to perform electrolyte preparation according to the target electrolyte injection parameter, and after electrolyte preparation, perform electrolyte
Absstract of: EP4794072A1
0001 A battery cell (20), a battery (100), an electric device, and an energy storage apparatus. The battery cell (20) comprises a casing (21). The casing (21) comprises a shell (211) and an end cover (212). An opening (211a) is formed in the shell (211). The shell (211) comprises a first wall (24). The first wall (24) comprises a first opening part (241) and a first body part (242) sequentially arranged in a first direction (Z). The first direction (Z) is parallel to the thickness direction of the end cover (212). The first opening part (241) is close to an opening (211a) with respect to the first body part (242). The end cover (212) is welded to the first opening part (241) to seal the opening (211a). The first opening part (241) comprises a plurality of first thickening areas (241a) and at least one first transition area (241b). The plurality of first thickening areas (241a) are arranged at intervals in a circumferential direction of the opening (211a). Two adjacent first thickening areas (241a) are connected by means of the first transition area (241b). The maximum thickness of the first thickening areas (241a) is greater than the thickness of the first body part (242), and the maximum thickness of the first thickening areas (241a) is greater than the thickness of the first transition area (241b). The present application can improve the reliability of the battery cell (20).
Absstract of: EP4794102A1
0001 A battery (10), an electric device and an energy storage device. The battery (10) comprises: a battery cell (20); a busbar component (12), wherein the busbar component (12) is used for electrically connect to an electrode terminal (214) of the battery cell (20); and an insulating component (13), the insulating component (13) comprising a main body portion (131) and an extending portion (132) that are connected to each other, wherein the main body portion (131) is attached to the surface of the busbar component (12) that is away from the battery cell (20), and the extending portion (132) is located at an end of the busbar component (12) that is close to the battery cell (20). The extending portion (132) is closer to a first surface relative to the main body portion (131), wherein the first surface is the surface of the battery cell (20) that is close to the electrode terminal (214). In this way, when thermal runaway occurs in the battery cell (20), the configuration of the insulating component (13) can reduce the impact of high-temperature gas and conductive particles which are released by the battery cell (20) on the busbar component (12), thereby reducing the influence on the performance of the busbar component (12), such that the usage performance of the battery (10) is improved.
Absstract of: EP4793325A2
Intumescent coating compositions comprising TiO2 in an amount of 5-20 wt %, a phosphate source in an amount of 20-55 wt %, based on total solid weight and a borate source, aluminum source and/or silica source, are disclosed, as are methods for using such compositions and substrates coated with same.
Absstract of: EP4794109A2
0001 An immersion cooled battery module according to an embodiment of the present disclosure includes a plurality of sub battery modules; a module case having an opening in at least one end, and accommodating the plurality of sub battery modules and a cooling liquid in an internal space connected to the opening; a sealing cover air-tightly covering the opening; a plurality of circuit boards corresponding to the plurality of sub battery modules, received in the internal space and configured to sense electrical signals related to the plurality of sub battery modules; and a waterproof connector coupled to the sealing cover, and configured to transmit the electrical signals respectively sensed by the plurality of circuit boards to an external device outside of the module case.
Absstract of: EP4794048A1
0001 The present application provides a secondary battery and an electric apparatus, the secondary battery including an electrode assembly, and the electrode assembly being a jelly-roll structure, where the electrode assembly includes a positive electrode plate, a negative electrode plate, a first separator, and a second separator; the first separator includes a first base film and a first ceramic coating, the first ceramic coating being disposed on at least one side of the first base film, the first ceramic coating including first ceramic particles, and the first ceramic particles including at least one of aluminum oxide, zirconium dioxide, titanium dioxide, or silicon dioxide; and the second separator includes a second base film and a second ceramic coating, the second ceramic coating being disposed on at least one side of the second base film, the second ceramic coating including second ceramic particles, and the second ceramic particles including boehmite. Through the above disposition, the secondary battery can balance energy density, cycling performance, and safety performance.
Absstract of: EP4794462A1
0001 This application provides a heat dissipation system and an energy storage system. The heat dissipation system includes a container body and a heat management module, where the heat management module is disposed in the container body. A partition plate in the container body separates the container body into a temperature control chamber and a control chamber. The temperature control chamber is located above the control chamber. The heat management module includes at least two compressors, at least two water pumps, a plate heat exchanger component, and an electric control box that are located in the control chamber. The compressors and the electric control box are sequentially disposed in a width direction, the plate heat exchanger component and the water pumps are sequentially disposed in the width direction, and the electric control box and the water pumps are disposed sequentially in a length direction. The compressors and the water pumps are separately connected to the plate heat exchanger component, and the compressors and the water pumps are separately connected to the electric control box. The heat management module further includes a liquid cooling unit located in the temperature control chamber, and the plate heat exchanger component and the electric control box are separately connected to the liquid cooling unit. The heat dissipation system in this application can implement water-electricity isolation and a multi-heat management system, so that heat management
Absstract of: EP4794112A1
0001 An electrolyte injection system (100) and an electrolyte injection method. The electrolyte injection system (100) comprises an electrolyte injection device (110), an upper computer (120), and a control device (130). The electrolyte injection device (110) is used for injecting an electrolyte into a battery cell in a battery cell electrolyte injection process. The upper computer (120) is used for: acquiring electrolyte injection data of the battery cell after battery cell electrolyte injection is completed, and locally recording the electrolyte injection data of the battery cell as historical electrolyte injection data; determining a first battery cell set placed in a battery cell tray that currently enters the electrolyte injection device (110); on the basis of the local historical electrolyte injection data, determining from among the first battery cell set a second battery cell set, electrolyte injection of which has not been completed; determining from among the second battery cell set a target battery cell set to be subjected to electrolyte injection; and sending to the control device (130) the position of each target battery cell in the target battery cell set in the battery cell tray. The control device (130) is used for controlling the electrolyte injection device (110) to perform electrolyte injection on the target battery cell set on the basis of the position corresponding to each target battery cell.
Absstract of: EP4792950A1
0001 A die-cutting machine (10), comprising an unwinding mechanism (11), a cutting mechanism (12), a visual detection system (13) and a winding mechanism (14), which are sequentially arranged in a conveying direction of an electrode sheet, wherein the visual detection system is used for collecting an image of the current electrode sheet that has been cut, and the cutting mechanism is used for cutting the next electrode sheet in a first marking mode when a detection result of the current electrode sheet indicates that the current electrode sheet has a defect, the detection result of the current electrode sheet is determined on the basis of the image of the current electrode sheet, a cutting position corresponding to the next electrode sheet is used as an end position of the current battery electrode sheet section and a starting position of the next battery electrode sheet section, and the length between the starting position of the next battery electrode sheet section and a starting position of the current battery electrode sheet section is less than the length of one battery electrode sheet section. Further provided is a die-cutting method. The die-cutting machine shortens the length of an electrode sheet that does not meet standards, reduces the possibility of electrode sheet waste, and achieves the aim of saving on electrode sheets, thereby reducing the manufacturing cost of batteries, and improving the productivity of the device.
Absstract of: EP4794282A2
0001 The present invention relates to battery system comprising a switching unit (14) configured to control a current flow for a battery; a battery pack (1) including a group of battery cells being monitored by a lower-level battery management system; an upper-level battery management system (100) for the battery pack; wherein the lower-level battery management system monitors a battery status by sensing temperature, voltage, or current of a battery module or cell and transmit monitored information to the upper-level battery management system; wherein the upper-level battery management system receives battery status information and transmit information to an upper-level control unit or transmit information obtained by determining a battery status based on the received information to the upper-level control unit; a channel change unit configured to handle wireless communication channels between the lower-level and the upper-level battery management systems; wherein, for maintaining continuity of communications through wireless communication channels, the channel change unit periodically changes wireless communication channels to perform communications through a second communication channel for a preset time period which is different from a first communication channel; a communication interface performs communications with the outside of the battery system; and a memory in which programs relating to battery management process are recorded.
Absstract of: EP4794103A2
0001 Disclosed is a battery module that reduces the risk of secondary ignition or explosion and increases durability against external impacts. The battery module includes a plurality of secondary batteries respectively having a gas venting portion for discharging a gas generated therein to the outside at a predetermined pressure and arranged in a front and rear direction in two rows; and a cooling member including a body portion interposed between two rows of the plurality of secondary batteries and having a size corresponding to left and right sides of the plurality of secondary batteries, and a gas discharge portion provided to at least one of an upper portion and a lower portion of the body portion and having a gas discharge passage elongated from a front end to a rear end of the body portion.
Absstract of: EP4794052A1
This application provides a battery pack with a breaking protection function and an energy storage system. The battery pack includes a battery module including a plurality of single cells, a breaking device connected in series to the battery module, a current sensor, and a controller. A first end of the current sensor is connected to a positive output end of the battery pack, and a second end of the current sensor is connected to a negative output end of the battery pack, to detect a current difference between the positive output end and the negative output end of the battery pack. The controller is configured to: when the current difference detected by the current sensor is greater than a first threshold, control the breaking device to be turned off, to quickly cut off a fault when the short-circuit to ground fault occurs in the cell in the battery pack, so as to ensure safe operation of the entire energy storage system.
Absstract of: EP4794169A2
A method for maintaining a power source (60) can include selecting, by a controller module (90), a rechargeable power storage device (62) from a set of power storage devices (62) arranged to selectively provide a summated output of the power source (60), and selectively enabling, by the controller module (90), the selected power storage device (62) to discharge its stored power at the output of the power source (60). The controller module (90) can compare a sensed voltage of the selected power storage device (62) with a minimum voltage threshold.
Absstract of: EP4794111A1
0001 A battery (100) and an electric device. The battery (100) comprises: a battery pack (10), comprising a first battery column (11) and a second battery column (12), which are arranged in a first direction (X), wherein the first battery column (11) and the second battery column (12) each comprise a plurality of battery cells (200) sequentially arranged in a second direction (Y), the first direction (X) intersecting the second direction (Y); a busbar assembly (20), comprising a first busbar member (21) and a second busbar member (22), wherein the first busbar member (21) is connected to the battery cells (200) of the first battery column (11), and the second busbar member (22) is connected to the battery cells (200) of the second battery column (12); and a separator (30), wherein in the first direction (X), at least part of the separator (30) is located between the first busbar member (21) and the second busbar member (22). The battery can improve its own reliability, thus reducing the risk of short circuits.
Absstract of: EP4794091A1
The embodiments of the present disclosure belong to the technical field of batteries. Provided are an explosion-proof valve patch, a cover plate assembly, a battery cell, a battery and an electric device. The explosion-proof valve patch comprises a patch body; a first rubber ring arranged on a first surface of the patch body and provided with a first gap; and a second rubber ring arranged on the first surface of the patch body, located on an inner side of the first rubber ring, and provided with a second gap, the first gap and the second gap being staggered.
Nº publicación: EP4794080A1 19/08/2026
Applicant:
CONTEMPORARY AMPEREX TECHNOLOGY CO LTD [CN]
Contemporary Amperex Technology Co., Limited
Absstract of: EP4794080A1
0001 A casing, a battery and an electric device, which relate to the technical field of batteries. The casing comprises a casing wall (1), load-bearing members (3) and connecting members (4), wherein an accommodating cavity (2) is formed by the casing wall (1) by means of enclosure, and is provided with first connecting holes (111); the first connecting holes (111) penetrate the casing wall (1) in the direction of thickness of the casing wall (1); the load-bearing members (3) are provided in the accommodating cavity (2); the connecting members (4) extend into the accommodating cavity (2) by means of the first connecting holes (111) so as to be detachably connected to the load-bearing members (3) to fix the casing wall (1) and the load-bearing members (3); and a connecting structure is provided on the side of each connecting member (4) facing the outside of the accommodating cavity (2), and is configured to be connected to a target device.
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