Samsung SDI Patente

An apparatus for manufacturing a secondary battery and an electrode plate cutting device that can prevent damage to a mixture portion or generation of foreign materials by expanding contact areas of a lower cutter and an upper cutter, thereby reducing concentration of a load. The apparatus includes a transfer part configured to move an electrode plate, which will be cut, along a transfer path, a winding part configured to wind the cut electrode plate transferred by the transfer part, and an electrode plate cutting device including an upper cutter installed above the transfer path of the electrode plate and a lower cutter installed below the electrode plate transfer path and cuts the electrode plate through cross motion with the upper cutter and in which a flat support portion configured to support the electrode plate is formed at an upper portion thereof.

An electrode plate slitting apparatus includes a first cutting unit configured to cut a supplied electrode plate raw material into a plurality of split electrode plates, a second cutting unit configured to cut the plurality of split electrode plates, a sensor unit configured to detect the plurality of split electrode plates supplied to the second cutting unit, resulting in detected split electrode plates, and a control unit configured to receive information about the detected split electrode plates, and control driving of the second cutting unit.

A slot die coater includes a first die block on a second die block with a first slot therebetween, the second die block including a first chamber accommodating a mixture, a third die block on the second die block with a second slot therebetween, the third die block including a second chamber accommodating a slurry, a first spacer in the first slot, the first spacer including an inner region connecting the first slot to a first discharge port, the first discharge port setting a width of the mixture discharged and applied from the first discharge port, and a shielding protrusion protruding from the inner region toward the first discharge port, and a second spacer in the second slot, the second spacer including a pocket connecting the second slot to a second discharge port, and the second discharge port overlapping a part of an edge portion of the first discharge port.

Disclosed herein may be apparatus (100) and method for separator (11) heat-sealing and stacking. The apparatus (100) may include a continuous separator supply unit (110) configured to connect a plurality of separator rolls (111) and supply separators (11) in the form of continuous sheets, a heat-sealing unit (120) configured to heat-seal two sheets of separators (11) supplied from the continuous separator supply unit (110), an electrode plate inserting unit (130) configured to insert an electrode plate (21, 22) between the two sheets of heat-sealed separators (11), and a cutting unit (140) configured to cut the two sheets of separators (11) between which the electrode plate (21, 22) is inserted, and produce a unit pack (30).

The present disclosure provides an electrode plate cutting machine and an apparatus for manufacturing a secondary battery, which may prevent foreign substances or cracks from occurring in a mixture portion while an electrode plate is cut and prevent an active material from being transferred to a separator. The electrode plate cutting machine includes an upper cutter installed above a transport path of an electrode plate transported along the transport path, a lower cutter installed below the transport path to cut the electrode plate, and a stripper installed on a side portion of the lower cutter to support the electrode plate upwardly toward the upper cutter while the electrode plate is cut, wherein the stripper includes a main body which provides a supporting force and a supporter supported by the main body and having a relatively low hardness compared to the upper cutter, the lower cutter, and the main body.

A vibration prevention apparatus for reducing vibration of a mixer used in manufacturing of an electrode slurry includes a rotation roller member between an inner vessel and an outer vessel extending around the inner vessel of the mixer and a damping cylinder on the outer vessel and configured to absorb the vibration transferred through the rotation roller member to reduce the vibration.

The present disclosure relates to a method and system for optimizing parameters of an electrochemical model. The method of optimizing parameters of an electrochemical battery model according to the present disclosure is performed by the system for optimizing parameters of an electrochemical battery model. The method includes determining values of fixed parameters of the electrochemical model on the basis of cell design information of an evaluation target battery, determining an optimal combination of a capacitive parameter and a starting voltage parameter of the electrochemical model by applying a first charging pattern to the electrochemical model while fixing a resistance parameter of the electrochemical model to a preset value, and determining an optimal combination of resistance parameters of the electrochemical model by applying a second charging pattern applied to the electrochemical model while the capacitive parameter and the starting voltage parameter are set to the optimal combination.

A dry electrode manufacturing apparatus (1) includes an input portion (10) configured to supply electrode powder, a guide chute (20) configured to pass the electrode powder supplied from the input portion (10), a dispersion rod (30, 31, 32) disposed inside the guide chute (20) and configured to undergo at least one of a linear motion or a rotational motion to disperse the electrode powder and adjust a particle-size distribution, a drive unit (40) configured to provide power to the dispersion rod (30, 31, 32), and compression rolls (60) configured to compress the electrode powder discharged from the guide chute (20) into an electrode member in a sheet form having a desired thickness.

A secondary battery includes: an electrode assembly (110); a lower case (120) including a receiving part (127) having a receiving space for accommodating the electrode assembly (110), and a flange part (128) surrounding around an open side surface of the receiving part (127); and an upper cover (130) coupled to the flange part (128) of the lower case (120), and sealing the open side surface of the receiving part (127). The receiving part (127) of the lower case (120) includes a bottom surface (140) spaced from the flange part (128), and a sidewall part (150) connecting the flange part (128) and the bottom surface (140) to each other. At least one edge of the sidewall part (150) has a rounded shape including a curved surface having a first radius (R1) of curvature, and a curved surface having a second radius (R2) of curvature coupled to the curved surface having the first radius (R1) of curvature. The first radius (R1) of curvature is larger than the second radius (R2) of curvature.

A method for detecting an insulation defect in a battery may be provided. The method for detecting insulation defect includes measuring a first voltage corresponding to a voltage of a positive terminal of a battery rackduring a first duration; measuring a second voltage corresponding to a voltage of the positive terminal of the battery rack and a third voltage corresponding to a voltage of a negative terminal of the battery rack, respectively, during a second duration; measuring a fourth voltage corresponding to a voltage of the negative terminal of the battery rack during a third duration; measuring an insulation resistance value of the battery rack based on the first voltage and the fourth voltage; and determining whether the battery rack has the insulation defect based on the insulation resistance value of the battery rack.

Disclosed are all-solid-state batteries and their fabrication methods. The mehtod of fabricating an all-solid-state battery comprises preparing a first substrate and a second substrate, preparing a first electrode plate by forming a first mixture layer on the first substrate, preparing a second electrode plate by forming a second mixture layer on the second substrate, forming a first electrode by transferring the second mixture layer of the second electrode plate to the first mixture layer of the first electrode plate, and performing a post-pressurization step to pressurize the first electrode. The forming of the first electrode comprises performing a pre-pressurization step in which the first electrode plate and the second electrode plate are pressurized while facing each other. The post-pressurization step further comprises cooling the second electrode plate.

A secondary battery includes an electrode assembly including a positive electrode, a separator, and a negative electrode; a case body accommodating the electrode assembly and having an open surface; a cover coupled to the open surface of the case body; and a positive electrode terminal connected to the positive electrode and coupled to a surface of the case body. The positive electrode terminal includes a fastening member extending into a through hole in the surface of the case body and a sealing member between the case body and the fastening member on the surface of the case body. The sealing member includes a vent portion.

A positive electrode slurry for an all-solid-state battery and a method for producing the positive electrode slurry, and an all-solid-state battery are provided. The positive electrode slurry includes a positive electrode active material, a conductive material, a binder, a sulfide-based solid electrolyte, a triphenylphosphine-based additive, and a solvent.

A sensing module, including a busbar holder, a slot passing through the busbar holder in a first direction, a first substrate on the busbar holder, a second substrate extending from the first substrate toward the slot, a temperature sensor connected to the second substrate, a first protective member connected to the second substrate, the first protective member surrounding the temperature sensor, and a support member supporting the first protective member inside the slot.

An electrode assembly includes a first electrode including a first substrate and a first composite part on the first substrate, a second electrode including a second substrate and a second composite part on the second substrate, a first separator between the first electrode and the second electrode, and a through hole in a winding core formed by winding of the first electrode, the second electrode, and the first separator, wherein the second substrate extends in a longitudinal direction of the second electrode, the second substrate including a winding direction non-coated part exposed from the second composite part, and wherein at least a part of the winding direction non-coated part is at a periphery of the through hole.

Disclosed are solid electrolytes, positive electrodes, and methods of manufacturing the solid electrolytes. The solid electrolyte includes a cluster that includes an active material particle and solid electrolyte particles. The solid electrolyte particles are in contact with the active material particle. Each of the solid electrolyte particles includes a linear carbon-based conductive material dispersed in the solid electrolyte particle. The active material particle of the cluster is electrically connected to a first solid electrolyte particle among the solid electrolyte particles. A second solid electrolyte particle among the solid electrolyte particles and the first solid electrolyte particle are in contact with each other to form an electrical path through the linear carbon-based conductive material of the first solid electrolyte particle and the linear carbon-based conductive material of the second solid electrolyte particle.

A battery module includes an electrode assembly (20) including a first electrode plate (22), a second electrode plate (24), and a separator (26), a case (30) accommodating the electrode assembly (20), and a deformation prevention part (50) having a substantially similar geometry to a periphery of the case (30), the deformation prevention part (50) surrounding the periphery of the case (30), thereby forming a unit module (10). Because a facing distance between internal components of a secondary battery is kept uniform, the charging and discharging efficiency of the secondary battery is improved, and the lifespan of the secondary battery is prolonged.

A secondary battery includes a case including a sealing area provided along a periphery of the case. An electrode assembly is accommodated in the case. An adhesive member is bonded to the case and the electrode assembly. At least a portion of the adhesive member is coupled to the sealing area.

An apparatus for manufacturing an electrode assembly may include a base frame, a stack table disposed on the base frame, a separator supply device configured to supply a separator in a zigzag configuration to the stack table, the separator supply device configured to reciprocate in a horizontal direction relative to the base frame, the separator comprising an adhesive layer, a first electrode supply device configured to dispose a first electrode on the separator while moving in a first direction, a second electrode supply device configured to dispose a second electrode on the separator while moving in a second direction opposite to the first direction, and a heating device configured to heat the separator to activate the adhesive layer such that the separator adheres to the first electrode or the second electrode.

A negative electrode for a rechargeable lithium battery and a rechargeable lithium battery including the negative electrode are provided. The negative electrode includes: a negative electrode current collector including a carbon layer including a first porous substrate and a carbon-based material existing inside the first porous substrate and a silicon layer including a second porous substrate and a silicon-based negative electrode active material existing inside the second porous substrate; and a negative electrode active material layer arranged on a surface of the negative electrode current collector and including a negative electrode active material.

A battery module (1000), including a plurality of secondary batteries (100), and a housing (300) accommodating the plurality of secondary batteries, wherein the housing includes a first cooling plate (310) supporting lower portions of the plurality of secondary batteries, and one or more second cooling plates (320) connected to the first cooling plate, the one or more second cooling plates surrounding at least portions of side surfaces of the plurality of secondary batteries.

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.

Disclosed are positive electrodes and all-solid-state batteries including positive electrodes. A positive electrode includes a positive electrode current collector, and a positive electrode active material layer on the positive electrode current collector. The positive electrode active material layer includes a positive electrode active material and a solid electrolyte. The positive electrode active material layer includes a surface section and a deep section. An amount of lithium impurities in the surface section is greater than an amount of lithium impurities in the deep section. The amount of lithium impurities in the surface section is in a range of ≥ 300 ppm to ≤ 700 ppm.

An electrode structure includes a positive electrode substrate. A composite layer is disposed on a surface of the positive electrode substrate, with the composite layer including a conductive adhesive layer mixed with an active material. An insulating layer is disposed on opposite side surfaces of the composite layer. Also disclosed are a method of manufacturing an electrode structure, and a secondary battery including an electrode structure.

A positive electrode active material includes a first positive electrode active material having an average particle diameter (D₅₀) in a range of 11 µm to 20 µm and in a form of secondary particles in which a plurality of primary particles are agglomerated; a second positive electrode active material having D₅₀ in a range of 5 µm to 10 µm and in a form of secondary particles in which a plurality of primary particles are agglomerated; and a third positive electrode active material having D₅₀ in a range of 1 µm to 7 µm and in a form of single particles; wherein the third positive electrode active material is in an amount in a range of 5 wt% to 20 wt% based on 100 wt% of the first positive electrode active material, the second positive electrode active material, and the third positive electrode active material.

An electrode drying apparatus, electrode manufacturing equipment, and an electrode drying method are described. The electrode drying apparatus includes a dryer configured to form a dried active material layer by applying thermal energy to dry a fluid active material layer of an electrode active material slurry coated on a substrate moving in a first direction. The apparatus also includes a densitometer configured to measure a density of the fluid active material layer and the dried active material layer, and a controller configured to control the dryer such that a magnitude of the thermal energy is adjusted based on a density variation that is a difference between a density of the fluid active material layer and a density of the dried active material layer as measured by the densitometer.

A positive electrode active material, and a positive electrode and a rechargeable lithium battery including the positive electrode active material are disclosed. The positive electrode active material includes a lithium cobalt-based oxide including zirconium and yttrium, wherein a content of zirconium, wherein a content of zirconium is in a range of about 0.1 wt% to about 10 wt% based on 100 wt% of a total metal excluding lithium in the lithium cobalt-based oxide, and a content of yttrium is in a range of about 0.5 wt% to about 15 wt% based on 100 wt% of a total metal excluding lithium in the lithium cobalt-based oxide.

A positive electrode active material, a preparation method thereof, a positive electrode including the same, and a rechargeable lithium battery are disclosed. The positive electrode active material includes a positive electrode active material including a lithium nickel-based composite oxide and having a secondary particle form in which a plurality of primary particles are agglomerated, wherein an average size of the primary particles measured through electron backscatter diffraction (EBSD) analysis of a cross-section of the secondary particles is about 1.05 µm to about 1.5 µm, a standard deviation of the size of the primary particles is less than or equal to about 0.3 µm, and an average aspect ratio of the primary particles is less than or equal to about 1.7.

A positive electrode active material includes a first positive electrode active material including a first lithium nickel-cobalt-based composite oxide doped with at least one of B, W, Y, and Mo, the first positive electrode active material being in a form of secondary particles that are formed by agglomerating a plurality of primary particles are agglomerated, with at least a portion of the primary particles having a radial arrangement structure. The positive electrode active material also includes a second positive electrode active material including a second lithium nickel-cobalt-based composite oxide doped with at least one of Zr, Sr, Ce, and Ta, with the second positive electrode active material being in a form of single particles.

An example electrode manufacturing device includes a feeding device configured to supply electrode powder, a guide chute adjacent to a discharge end of the feeding device and into which the electrode powder supplied from the feeding device is introduced, a dispersing drum between the feeding device and the guide chute and configured to disperse the electrode powder moving from the feeding device to the guide chute, and a press roller adjacent to a discharge end of the guide chute and configured to press the electrode powder discharged from the guide chute.

A secondary battery, including an electrode assembly, a case accommodating the electrode assembly, and a vent in the case, the vent being deformable by a first operating pressure and rupturable by a second operating pressure greater than the first operating pressure.

A secondary battery (1), including a case (100), an electrode assembly (200) accommodated in the case (100), a cap assembly (300) facing the electrode assembly (200), and a cooling unit (400) in the cap assembly (300), the cooling unit (400) including a refrigerant.

A jig for measuring a breakdown voltage of an insulator includes a support portion accommodating a specimen, support members on the support portion, the support members being connected to the support portion, a first plate connected to the support members, the first plate being movable along the support members, a pressurizing portion connected to a first side of the first plate, the pressurizing portion being configured to apply a pressure to the specimen, and a pressure control portion connected to a second side of the first plate, the pressure control portion being configured to adjust a moving distance of the first plate, wherein the pressurizing portion includes a rod configured to pressurize the specimen, a chuck to which the rod is detachably connected, and a pressure sensor between the chuck and the pressure control portion, the pressure sensor being configured to measure the pressure applied to the specimen.

A secondary battery (100) and a battery pack (1) including the same are disclosed. A secondary battery (100) includes a case (101) including an opening (160), an electrode assembly (200) accommodated in the case (101), an electrode tab (301, 302, 310, 320) connected to the electrode assembly (200), a cap plate (501) closing the opening (160), a terminal (530, 540) coupled to the cap plate (501), and a current collecting member (400A, 400B, 400C, 400D) including a plate portion (401) coupled to the electrode tab (301, 302, 310, 320) and configured to allow a current flow therebetween, a terminal coupling part protruding from the plate portion (401) to be coupled to the terminal (530, 540) and configured to allow a current flow therebetween, and a heat capacity increasing part protruding from the plate portion (401) without contacting a portion of the cap plate (501) and the terminal (530, 540).

A secondary battery includes a case and an electrode assembly provided in the case. The electrode assembly includes a first electrode plate having a first electrode tab, with an insulating layer covering a portion of one surface of the first electrode tab. The electrode assembly also includes a second electrode plate having a second electrode tab. A separator is disposed between the first electrode plate and the second electrode plate. The ratio of thickness of the first electrode plate to the thickness of the insulating layer is 45% to 65%.

A secondary battery, including a case having an opening, an electrode assembly accommodated inside the case, and a cap assembly, including a cap plate closing the opening, a terminal coupled to the cap plate, a gasket supporting the terminal, the gasket connected to the cap plate and including an insulating material, and an insulating member including an insulating material, the insulating member being between the cap plate and the electrode assembly inside the case, the insulating member being coupled to the gasket.

An insulation apparatus includes a panel portion including an insulating layer, a pair of frame portions arranged to surround opposing sides of the panel portion, and an insulating portion positioned between the panel portion and each of the frame portions, wherein a space is formed between each of the frame portions and the panel portion.

A current collector, an electrode including the current collector, and a rechargeable lithium battery are provided. The current collector includes: a first metal layer; a second metal layer; and a piezoelectric layer arranged between the first metal layer and the second metal layer and including a piezoelectric material.

Disclosed are negative electrodes for all-solid-state batteries, methods of preparing coating slurry, and all-solid-state batteries. The negative electrode includes a negative electrode current collector and a coating layer on the negative electrode current collector. The coating layer includes a carbon-based material and a metal particle. The metal particle includes a lithiophilic metal. An average particle diameter of the metal particle is in a range of ≥ 10 nm to ≤ 200 nm. A standard deviation of a particle diameter of the metal particle is equal to or less than 50% of the average particle diameter.

A secondary battery (2), including a case (100), an electrode assembly (200) inside the case (100), a cap assembly (400) sealing the case (100), the cap assembly (400) including a first terminal (420) and a second terminal (430), a first tab member (301) extending in a first direction from the electrode assembly (200), a first sub plate (500) between the electrode assembly (200) and the case (100), the first sub plate (500) being connected to the first tab member (301), a first terminal plate (600) connected to the first terminal (420) and the first sub plate (500), and a first direct connecting portion (650) in the first sub plate (500) to allow the first terminal plate (600) and the first tab member (301) to be directly welded together.