Samsung SDI Patente

A slot die for manufacturing a secondary battery electrode includes a supplier configured to supply a substrate, an electrode die configured to coat the substrate with an electrode slurry, an insulating die configured to coat the substrate having passed hrough the electrode die with an insulating slurry, and a uniform flow velocity part on the insulating die and configured to reduce a flow velocity deviation of the discharged insulating slurry.

A method for controlling driving of an electric vehicle using a battery pack (10) including battery cells as a power source in a battery management system (300) may include receiving a first ignition-on signal, activating an emergency driving mode, and discharging the battery pack (10) by setting a discharge voltage of the battery pack (10) in the emergency driving mode to a first discharge voltage that is lower than a normal discharge voltage of a normal driving mode.

The present disclosure provides an apparatus for manufacturing a secondary battery and an electrode plate cutting unit for manufacturing a secondary battery, which enable continuous cutting and prevents productivity from being lowered by supporting a cut front end after cutting an electrode plate to prevent the electrode plate from falling down a normal transport path. An apparatus for manufacturing a secondary battery includes a transport unit configured to transport an electrode plate along a transport path, a winding unit configured to receive and wind the electrode plate transported by the transport unit, and a cutting unit having a cutting part which cuts the electrode plate that is transported, and a separation prevention part which supports a front end portion of a subsequent electrode plate, which moves toward the winding unit, in a transport direction after cut by the cutting part to prevent the subsequent electrode plate from deviating from the transport path toward the winding unit.

The present disclosure provides an apparatus for manufacturing a secondary battery and an electrode plate cutting unit for a secondary battery, in which, since a lower cutter is fixedly pressed using a high-strength spring, the lower cutter has good fixing strength and cutting precision is stably maintained, thereby preventing deintercalation of an active material when cutting an electrode plate and improving quality of a cut surface. The apparatus includes a transport unit configured to transport an electrode plate, which is a cutting target, along a transport path, a winding unit configured to receive and wind a cut electrode plate transported by the transport unit, and a cutting unit having an upper cutter installed above the transport path to move upwardly and downwardly, a fixing body fixed below the transport path to provide support strength, a lower cutter supported by the fixing body and configured to cut the electrode plate through cross motion with the upper cutter, and an elastic support elastically supporting the lower cutter toward the fixing body to maintain a fixed state of the lower cutter with respect to the fixing body.

The present disclosure provides an apparatus for manufacturing a secondary battery and an electrode plate cutting unit, which are capable of preventing cracks or foreign substances from occurring in a mixture portion and preventing an active material from being transferred to a separator by reducing the load applied to a load concentration area of an electrode plate while the electrode plate is cut. The apparatus for manufacturing a secondary battery includes a transport unit configured to transport an electrode plate, a winding unit configured to wind the electrode plate, and a cutting unit having an upper cutter, a lower cutter, and a stripper installed on a side portion of the lower cutter, that supports the electrode plate when the upper cutter moves downwardly to transmit to the electrode plate a reaction force corresponding to a downward force of the upper cutter, and provides a stress relief space which prevents the reaction force from being transmitted to a portion of the electrode plate to which shear forces due to the upper cutter and the lower cutter are applied.

An apparatus for manufacturing an electrode plate for a secondary battery, the apparatus including a welding unit contacting an electrode plate, the electrode plate including a stack of a plurality of substrates, the welding unit being configured to weld the plurality of substrates in a thickness direction, resulting in a welded surface, a coating unit configured to apply an insulating material onto the welded surface of the electrode plate, resulting in a coated insulating material, a welded-surface imaging unit outside the electrode plate, the welded-surface imaging unit being configured to capture an image of the welded surface, and a control unit electrically connected to the coating unit and the welded-surface imaging unit, the control unit being configured to receive, from the welded-surface imaging unit, information about the welded surface and move the coating unit above the electrode plate.

An apparatus for manufacturing a secondary battery and an electrode plate cutting unit are disclosed.. The apparatus includes a transfer part configured to move an electrode plate, a winding part configured to wind the electrode plate transferred by the transfer part, an ascending/descending upper cutter which is installed above the transport path to allow a mounting direction to be changed and on which is formed an upper cutter blade, a stripper positioned below the electrode plate and configured to support the electrode plate when the electrode plate is cut, a fixed body configured to elastically support the stripper, and a lower cutter which is supported on a side portion of the fixed body and on which a lower cutter blade is formed, wherein one of the upper cutter blade and the lower cutter blade includes two or more blades.

A slot die for manufacturing a secondary battery electrode includes an upper die, a lower die below the upper die, a shim plate between the upper die and the lower die, and a supplier in the lower die and configured to supply a slurry to a space defined in the shim plate.

The present disclosure is directed to suppressing movement of an electrode plate when cutting an electrode plate to prevent deintercalation of an active material, and not causing damage or deformation of a front end surface through a uniform surface contact between a cutter and a tilting stripper. The electrode plate cutting unit includes a lower cutting unit having a lower cutter installed below a transport path of an electrode plate moving along the transport path and having an inclined blade and a support stripper positioned at a side portion of the lower cutter to support the electrode plate upwardly, and an upper cutting unit having an upper cutter provided to move upwardly and downwardly above the transport path to cut the electrode plate through cross motion with the lower cutter when moving downwardly and a tilting stripper installed at a side portion of the upper cutter and tilted while supporting the electrode plate toward the lower cutter.

Disclosed are a positive electrode for a rechargeable lithium battery, and a rechargeable lithium battery including the positive electrode. The positive electrode for a rechargeable lithium battery includes a positive electrode current collector, a first positive electrode active material layer on the positive electrode current collector and including a first positive electrode active material including a lithium iron phosphate-based compound, and a second positive electrode active material layer on the first positive electrode active material layer and that includes a second positive electrode active material including a lithium nickel-based composite oxide and a third positive electrode active material including a lithium manganese-based oxide.

An apparatus for drying an electrode includes: a drying unit above an upper portion of a moving electrode plate, and to: spray hot air in a direction opposite to a traveling direction of the moving electrode plate to dry a slurry applied to a substrate; and suck gas that dried the slurry; an air supply unit to supply the hot air to the drying unit; and an exhaust unit to externally discharge the gas sucked into the drying unit. The drying unit is to control a spraying direction of the hot air sprayed onto the moving electrode plate.

A method of analyzing a slurry, which is performed by a processor of a slurry pressurizing and filtering apparatus, may include collecting a cumulative discharge amount of a slurry of an active material for a secondary battery at preset time intervals, calculating a discharge amount per hour of the slurry by using a cumulative discharge amount of the slurry at a previous time and a cumulative discharge amount of the slurry at a current time, classifying state information of the slurry based on the cumulative discharge amount of the slurry and the discharge amount per hour of the slurry, and deriving a discharge rate, which represents flow characteristics and a dispersion state of the slurry, as an evaluation characteristic value based on a result of classifying the state information of the slurry.

A battery management system (300) includes an impedance measurement unit (310) configured to measure at least one of an impedance of a battery (400) for each charging cycle or an impedance of the battery (400) for each discharging cycle, and a battery control unit (330) configured to perform at least one of calculating an amount of change in a charging impedance by comparing an impedance of a current charging cycle with an impedance of a previous charging cycle, and setting a next discharging completion voltage of the battery (400) based on the amount of change in the charging impedance, or calculating an amount of change in a discharging impedance by comparing an impedance of a current discharging cycle with an impedance of a previous discharging cycle, and setting a next charging completion voltage of the battery (400) based on the amount of change in the discharging impedance.

The present disclosure relates to a battery cell stacking apparatus and method. The battery cell stacking apparatus includes an arrangement unit configured to arrange battery cells to be stacked, a transfer unit configured to grip and transfer some of the battery cells arranged by the arrangement unit, a polarity direction change unit configured to change polarity directions of the some of the battery cells transferred from the transfer unit by rotating the some of the battery cells, an rearrangement unit configured to grip and rearrange the some of the battery cells whose polarity directions are changed by the polarity direction change unit at original positions thereof between the arranged battery cells, and a controller configured to control operations of the arrangement unit, the transfer unit, the polarity direction change unit, and the rearrangement unit.

The present disclosure includes a method for manufacturing a dry electrode film, a dry electrode film, and a dry electrode including the dry electrode film. The method for manufacturing a dry electrode film includes preparing a dry mixture by dry mixing an active material, a conductive material, and a binder, manufacturing a mixture lump by kneading the dry mixture, obtaining an electrode powder by crushing the mixture lump, manufacturing a specimen using the electrode powder through a mold, testing a yield strength of the specimen, and manufacturing, when a test result of the yield strength satisfies a desired criterion, a sheet type dry electrode film having a given thickness by calendaring the electrode powder.

Various embodiments of the present invention relate to a secondary battery having symmetric multi-tabs, and the technical problem to be solved is providing a secondary battery capable of increasing the insulation level of first and second multi-tabs by forming the first and second multi-tabs of first and second electrode assemblies to be symmetric to each other. To this end, the present invention provides a secondary battery comprising: a case; a first electrode assembly accommodated inside the case and having first multi-tabs; a second electrode assembly accommodated in parallel with the first electrode assembly inside the case and having second multi-tabs; and a cap plate closing the case and having electrode terminals electrically connected to the first and second multi-tabs of the first and second electrode assemblies, wherein the first and second multi-tabs are formed so as to be symmetrical with respect to the boundary area between the first and second electrode assemblies.

The present disclosure relates to a cap assembly (100) and a secondary battery (10) including the same. The cap assembly (100) may include a cap plate (110) having a support hole (112) formed therein, an electrode terminal (120) disposed on one surface of the cap plate (110), and an insulator (140) disposed on an other surface of the cap plate (110), a part of which surrounds a perimeter of the support hole (112) of the cap plate (110), and configured to be coupled to the electrode terminal (120) and electrically insulate the electrode terminal (120) from the cap plate (110).

A substrate processing apparatus includes an encoder configured to measure a substrate transport speed and a substrate transport position of a substrate being transported, a scanner configured to scan one surface of the substrate using light at predetermined time intervals, and a scanner control unit configured to control a scan trajectory based on the substrate transport speed and the substrate transport position, wherein the scanner control unit maintains a scan trajectory constant regardless of changes in the substrate transport speed by changing a scan speed of the scanner in real time.

A secondary battery, including an electrode assembly (140) including a positive electrode, a negative electrode, and a separation film between the positive electrode and the negative electrode, a holder (340, 640) that surrounds an outer surface of the electrode assembly (140), and a case accommodating the electrode assembly (140) and the holder (340, 640), wherein the holder (340, 640) includes a plurality of grooves (346, 348, 646, 648) through which the electrode assembly (140) is exposed.

The present disclosure provides a battery tape including a first member configured to be placed on a first surface of a battery, a pair of second members extending along a first direction from the first member and configured to be adhered to at least part of a second surface of the battery opposite to the first surface, and a pair of third members extending along a second direction from the first member perpendicular to the first direction, and configured to be adhered to at least part of the second surface, wherein one of the pair of second members includes a pull indication line adjacent to one end of the respective second member, and the pull indication line correspondingly overlaps a pull indication line of the other one of the pair of second members when the pair of second members are adhered to the second surface.

An electrode assembly according to the present disclosure includes a first electrode connected to a first electrode tab, a second electrode connected to a second electrode tab, and a separator that is positioned between the first electrode and the second electrode. The first electrode, the separator and the second electrode are sequentially stacked and wound around a winding axis such that the electrode assembly includes a core portion having a center hole formed therein and an outer portion connected to the core portion. A length of the core portion in a direction of the winding axis is different from a length of the outer portion in the direction of the winding axis.

Provided are a separator for a rechargeable lithium battery, and a rechargeable lithium battery including the separator. The separator includes one or more fibrous layers, wherein at least one of the fibrous layers includes a fiber network of fibers containing a first copolymer, and at least one of the fibrous layers includes a polyimide-based fiber, or a core-shell fiber containing a polyimide-based resin. The first copolymer includes a copolymer of a monomer mixture, which includes a first structural unit including a unit derived from an aromatic based unsaturated monomer; a second structural unit derived from a (meth)acryl-based monomer containing an alkyl group with 4 or more carbon atoms in the main chain in an ester moiety; and a third structural unit derived from a monomer containing a sulfonic acid group.

In an assembly structure of a battery frame, the assembly structure includes: a first boss portion protruding from a side edge of a first frame in which a battery cell is mounted and having an insertion hole portion formed in a direction of the side edge; a second boss portion arranged to correspond to the first boss portion on a second frame on which the first frame is seated, and having a coupling hole portion corresponding to the insertion hole portion; and a fastening member having a shaft portion passing through the insertion hole portion and the coupling hole portion, wherein an end portion of the shaft portion is fixed.

A battery and a battery pack including the same are disclosed. A battery includes a case, an electrode assembly accommodated in the case and including an electrode, a tab connected to the electrode and extending from the electrode assembly, a cap assembly facing the electrode assembly and including a terminal, and a current collector assembly between the electrode assembly and the cap assembly, and including a current collector plate joined to the tab, and a current collector coupled to the current collector plate and joined to the terminal.

An electrode assembly includes a separator, a positive electrode and a negative electrode positioned with the separator therebetween and wound together with the separator. The negative electrode includes a negative substrate, a first active material layer positioned on a first surface of the negative substrate, and a second active material layer positioned on a second surface of the negative substrate. A plurality of first grooves are formed in the first active material layer. A plurality of second grooves having a different pattern from the plurality of first grooves are formed in the second active material layer.

A secondary battery includes: an electrode assembly; an exterior portion having an accommodation portion in which the electrode assembly is accommodated and a wing portion extending along a periphery of the accommodation portion, the wing portion including a folded portion having: a plurality of folding bodies that are folded inwardly or outwardly; and a penetration hole portion; and a molded portion that covers and is coupled to the exterior portion along a periphery of the exterior portion and extending through the penetration hole portion.

Provided is a battery module including a plurality of battery cells arranged so that main surfaces thereof face one another along a first direction and a cooling plate arranged between the plurality of battery cells, wherein the cooling plate includes a flow path through which cooling water flows therein, and a vertical cross-section of the cooling plate parallel to the first direction includes a pattern in which at least one or more types of polygons are combined.

An electrode for a rechargeable battery according to an example embodiment includes a substrate, an active material layer formed on the substrate, a hole formed in the active material layer, and a first groove and a second groove formed on both sides of the hole and spaced apart from the hole.

Provided are a negative electrode for a rechargeable lithium battery, and a rechargeable lithium battery including the negative electrode. The negative electrode includes a negative electrode current collector and a negative electrode active material layer on the negative electrode current collector. The negative electrode active material layer includes a negative electrode active material, a conductive material, a binder, and an additive.

A battery cell tray includes: a base tray configured to accommodate a plurality of battery cells thereon; and an inner tray coupled to the base tray and having partition walls between areas where adjacent ones of the plurality of battery cells are to be accommodated.

A method of sealing a pouch-type battery includes: a top sealing operation including sealing an upper region of a sealing part of a pouch above an electrode assembly receiving part thereof; a post-electrolyte-injection sealing operation including sealing the sealing part at one side of the electrode assembly receiving part after injecting an electrolyte into an electrode assembly; and a post-degassing sealing operation including sealing a remaining side of the sealing part at an opposite side of the electrode assembly receiving part after removing gas from the electrode assembly receiving part. In the top sealing operation, a gap between the sealing part and the electrode assembly receiving part is substantially the same both at each upper corner of the electrode assembly receiving part and along the upper region between the upper corners of the electrode assembly receiving part.

A battery and a battery pack are disclosed. A battery includes a case, an electrode assembly accommodated in the case and including an electrode, a tab member connected to the electrode and extending from the electrode assembly, a cap assembly facing the electrode assembly and including a terminal, a connection member between the electrode assembly and the cap assembly and connected to the terminal and the tab member, and an electrode protection member between the connection member and the electrode assembly.

A secondary battery includes an electrode assembly including a positive electrode plate, a negative electrode plate, and a separator, a lead part electrically connected to the electrode assembly, a case accommodating the electrode assembly, and a reinforcing member inside the case, the reinforcing member surrounding a connection portion of the electrode assembly, the lead part and an edge of the electrode assembly.

A bus bar and a battery pack are disclosed. A battery pack includes a housing, a plurality of first battery cells each including a first positive electrode terminal and a first negative electrode terminal, a plurality of second battery cells each including a second positive electrode terminal and a second negative electrode terminal, a first bus bar connecting the first negative electrode terminals of the plurality of first battery cells, a second bus bar connecting the second positive electrode terminals of the plurality of second battery cells, and a third bus bar connecting the first positive electrode terminals of the first battery cells and the second negative electrode terminals of the second battery cells, and at least one of the first bus bar, the second bus bar, or the third bus bar is deformable according to positions of the first battery cells and the second battery cells.

A secondary battery (1) includes an electrode assembly (100) including an electrode laminate (140) having a circular shape where a first electrode (110), a separator, and a second electrode (120) are alternately stacked, a first electrode tab (113) connected to the first electrode (110), and a second electrode tab (123) connected to the second electrode (120), an accommodating can (300) with one open side for accommodating the electrode assembly (100), the accommodating can (300) being electrically connected to the first electrode tab (113), a cap assembly (400) configured to seal the one open side of the accommodating can (300), the cap assembly (400) being electrically connected to the second electrode tab (123), a first contact member (210) between one surface of the electrode laminate (140) that faces a bottom surface of the accommodating can (300) and the first electrode tab (113), and a first fixing member (230) surrounding the first electrode tab (113) between an inner side wall of the accommodating can (300) and an outer circumferential surface of the electrode assembly (100).

A secondary battery includes an electrode assembly comprising a plurality of electrode plates and a plurality of separators between the plurality of electrode plates, the plurality of electrode plates comprising first tabs and second tabs, and each of the plurality of electrode plates comprises a coating part coated with an active material, a current collector electrically connected to the first tabs and the second tabs, and a case accommodating the electrode assembly, wherein the current collector includes a first section to which the first tabs are connected, and the first section includes a first sub-section to which a portion of the first tabs is welded in an initially bent state and a second sub-section to which a remaining portion of the first tabs is welded in a secondarily bent state.

A separator for a rechargeable lithium battery includes a porous substrate, and a coating layer located on at least one surface of the porous substrate. The coating layer includes a binder, the binder includes a copolymer including a first structural unit including a unit derived from an aromatic-based unsaturated monomer; a second structural unit derived from a (meth)acrylic monomer containing an alkyl group with 4 or more carbon atoms in the main chain of the ester moiety; and a third structural unit derived from a sulfonic acid group-containing monomer. Based on 100 mol% of the copolymer, the first structural unit is included in an amount of from about 5 mol% to about 80 mol%, the second structural unit is included in an amount of from about 10 mol% to about 40 mol%, and the third structural unit is included in an amount of from about 5 mol% to about 80 mol%.

A battery includes a case (100), an electrode assembly (200) inside the case, the electrode assembly including electrodes parallel to each other in a first direction, a tab (301) member including electrode tabs extending from the electrodes in a one-to-one manner, the electrode tabs including first electrode tabs, a cap assembly facing the electrode assembly, the cap assembly including a terminal (420), and a current collector assembly (500) between the electrode assembly and the cap assembly, the current collector assembly including a current collector (510) connected to the terminal and a current collector plate (520) connected to the tab member, and the current collector plate including a slit (S11,S12) through which the first electrode tabs pass.

The present invention relates to an electrode (200), and a technical problem to be solved is to provide an electrode (200) that prevents a substrate (210) from being damaged by a tab (230). To this end, the present invention provides an electrode (200) including: a substrate (210); an active material layer (220) provided on a part of the substrate (210); and a tab (230) in contact with the substrate (210), wherein at least a portion of the tab (230) is located on the active material layer (220).

The present disclosure relates to a negative electrode slurry, a manufacturing method of the negative electrode slurry, and a negative electrode manufactured using the negative electrode slurry. The negative electrode slurry includes a first negative electrode active material including a silicon composite, and a second negative electrode active material including a carbon-based material. The silicon composite includes a silicon-based active material and a one-dimensional carbon nanostructure. The one-dimensional carbon nanostructure is fixed in a dispersed form on a surface of the silicon-based active material. The second negative electrode active material is a carbon-based material different from the one-dimensional carbon nanostructure.