Samsung SDI Patente

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.

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.

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.

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 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.

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.

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.

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.

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.

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 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.

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 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.

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 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 bus bar assembly (2000) includes a first circuit board (2100) that includes a first circuit (2120) on at least one surface of the first circuit board (2100). A second circuit board (2200) is provided on a surface of the first circuit board (2100) and electrically connected to the first circuit board (2100). A second circuit is printed on two surfaces of the second circuit board (2200).

A battery module includes battery cells arranged in a first direction such that main surfaces of the battery cells are adjacent to each other, a pair of end plates at outermost sides of the battery cells, and a pair of side plates coupled to the pair of end plates and covering side surfaces of the battery cells. Each of the end plates includes a first elastic portion extending across the end plates in a second direction substantially perpendicular to the first direction, and each of the side plates includes a groove overlapping the first elastic portion in the second direction and extending in the first direction.

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.

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.

The present disclosure provides a battery pack and an energy storage system including the same. The battery pack may include a case having an accommodating space therein, a battery module comprising a plurality of battery cells arranged in the accommodating space, and an extinguishing tube placed on the battery module, and the extinguishing tube may include a tube cover filled with a filler and a plurality of spraying units formed on the tube cover.

A battery module includes a housing, one or more battery cells in the housing, a holder coupled to the housing, and a cover slidably coupled to the holder in a first direction and arranged to face the holder in a second direction intersecting the first direction.

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.

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 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.

A battery cell (100, 100') includes an electrode assembly (110) including a positive electrode (111), a negative electrode (113), and a separator (115) between the positive electrode (111) and the negative electrode (113), a case (130) accommodating the electrode assembly (110), the case (130) including an opening (131h), a cap plate (150) connected to the case (130) while covering the opening (131h), and an insulator (170) between an inner circumferential surface of the case (130) and the electrode assembly (110), the insulator (170) being configured to prevent heat generated in the case (130) from being transferred to an outside.

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).

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 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.

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 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 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.

Disclosed are composite substrates and rechargeable lithium batteries. The composite substrate includes a first metal layer, a second metal layer, and a function enhancement layer between the first metal layer and the second metal layer. The function enhancement layer includes a tab portion and a middle portion. The tab portion is on at least one end in a first direction of the function enhancement layer. The tab portion extends substantially parallel to a third direction. The middle portion is a remaining part of the function enhancement layer except for the tab portion. A welding adhesion of the tab portion is greater than a welding adhesion of the middle portion. An elongation at break of the middle portion is greater than an elongation at break of the tab portion.

A secondary battery may include an electrode assembly, a case accommodating the electrode assembly and including an electrode terminal coupled to an electrode tab of the electrode assembly, a case cover on an open side of the case, and a support portion protruding from the case cover to one side and coupled to a housing accommodating the case, wherein the support portion is configured to be elastically deformed and released from the housing based on receiving an external force.

A secondary battery includes: an electrode assembly; and a case (100) accommodating the electrode assembly, and including: a body (110) accommodating the electrode assembly; a fixing bar (120) extending from one side of the body, and having a coupling hole (102) penetrating therethrough for fastening with a coupling substrate (200); and a first coupling portion (130) on an opposite side of the body to be connected to a second coupling portion (230) of the coupling substrate (200).

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, 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 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.

An apparatus for manufacturing a film for an electrode may include a feeder (110) configured to transport mixed powder, a guide chute (120) including a filter portion (150) configured to pass small particles (B) and leave large particles (A) among the powder falling from the feeder (110), and a guide portion (130) that guides the large particles in a given direction, and a rolling roll (140) configured to roll the powder delivered through the guide portion (130).