Samsung SDI Patente

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 substrate, and a positive electrode active material layer on the substrate. The positive electrode active material layer includes MXene, a solid electrolyte, and a positive electrode active material. A distribution of the solid electrolyte increases from the lower portion to the upper portion of the positive electrode active material layer.

A manufacturing method for a rechargeable battery (1), the manufacturing method including manufacturing a case (10) having an opening on a first side, inserting an electrode assembly (30) into the case (10) through the opening, and coupling a cap assembly (50) to the first side, wherein manufacturing the case (10) includes manufacturing a first intermediate material (10') having an internal accommodation space (11) and an open first side, manufacturing a second intermediate material (10") by forming a plurality of holes (1130) on a second side opposite to the first side of the first intermediate material (10'), and coupling a first electrode terminal (150) to the second side of the second intermediate material (10").

Disclosed are a heating sheet of a battery cell for a thermal propagation evaluation and a thermal propagation evaluation apparatus including the same. A thermal propagation evaluation apparatus (100) according to embodiments includes a power source (130), a housing (110) including a cell occupancy space, in which a plurality of battery cells (C1-C5) including a target battery cell are disposed in parallel, and a heating sheet connected to the power source and configured to heat the target battery cell (120) in the housing, wherein the heating sheet includes a cover in a sheet shape having an area corresponding to one surface of the battery cell and a predetermined thickness and a heating member including a heating coil pattern disposed in one region inside the cover and electrically connected to the external power source, and an area of a region in which the heating coil pattern is disposed may range from 5 to 20% of an area of the cover.

An electrode assembly according to some embodiments may include a first electrode, a second electrode, and a separator between the first electrode and the second electrode. The separator may include a protrusion protruding from the first electrode and the second electrode, and a protective layer may be disposed on the protrusion.

A battery pack includes a pack housing, a plurality of battery cells accommodated in the pack housing and including terminals protruding to a side, and a busbar-film assembly including a plurality of first busbars to allow the terminals of a pair of battery cells located adjacent to each other among the plurality of battery cells to be electrically connected, a first film and a second film coupled to each other with the plurality of first busbars arranged therebetween, and a first deformation area deformable by an external force between a pair of first busbars adjacent to each other among the plurality of first busbars.

A battery cell cooling member is arranged between adjacent battery cells and includes two facing plates formed on an inner side between the battery cells to face the battery cells, respectively, and an elastic pad between the two facing plates and having a cooling path.

A notching mold (10) comprises a lower plate(110); an upper plate (120) disposed above the lower plate (110); a die plate (410) disposed on the lower plate (120) and supporting a die (420); the die (420); a punch plate (510) between the upper plate (120) and the die plate (410); a punch pusher (530) between the upper plate (120) and the die plate (410); a punch (520) below the punch plate (510) and the punch pusher (530) and above the die plate (410); and a guide post (700) connected to the die plate (410) and the punch (520), wherein the die (420) comprises an opening (OP), wherein the punch (520) is coupled with the punch plate (510), wherein the punch (520) comprises a first region (1A) configured to be inserted into the opening (OP) and a second region (2A) disposed outside the opening (OP), and wherein the guide post (700) is configured to guide movement of the punch (520).

A battery (10) includes a plurality of electrode assemblies (30) each having a positive electrode plate and a negative electrode plate, each of the positive electrode plate and the negative electrode plate having an electrode tab (31), a battery can (20) having a plurality of compartment spaces (25) that accommodate each of the plurality of electrode assemblies (30) and expose each electrode tab (31) to an outside, and a cap assembly (40) fixed to the battery can (20) to seal the plurality of compartment spaces (25), the cap assembly (40) being electrically connected to each electrode tab (31).

An electrode assembly may include a first electrode having a first electrode tab, a second electrode disposed on the first electrode and having a second electrode tab, a first pass electrode disposed on the second electrode and having a first pass electrode tab electrically connected to the first electrode tab, and a separator disposed between the first electrode and the second electrode or between the second electrode and the first pass electrode.

Described is a positive electrode including a current collector, a first positive electrode active material layer on the current collector, and a second positive electrode active material layer on the first positive electrode active material layer. The first positive electrode active material layer includes a first positive electrode active material including a lithium iron phosphate-based compound. The second positive electrode active material layer includes a second positive electrode active material including a lithium iron phosphate-based compound and an oxide-based solid electrolyte. The oxide-based solid electrolyte is included in an amount in a range of about 0.1 wt% to about 3.0 wt% based on 100 wt% of a total of the second positive electrode active material layer.

An apparatus for cutting a secondary battery can includes a support fixedly supporting a molded battery can product having a removal target portion, a cutter having an incision blade inserted into the molded battery can product, the cutter being configured to incise a portion of the removal target portion, and a cutting blade configured to continuously cut from the portion of the removal target portion incised by the incision blade, and a cutter driver that moves the cutter and causes the incision blade to move along a linear path perpendicular to an inner wall of the molded battery can product, resulting in a cutting start incision portion on the inner wall, the cutter driver causing the cutting blade to cut from the cutting start incision portion.

The present disclosure refers to a disassembling facility (1000) for disassembling HV-battery (200) after a thermal damage event. The facility (1000) includes at least one work space (10) accessible for a user. The contamination tunnel (20) is separated from the at least one work space (10) by at least one tunnel wall (30) and including a tunnel inlet (23) for entering of the HV-battery (200) and a tunnel outlet (24) for discharging the disassembled HV-battery (200). The facility (1000) a transparent member (32) at the at least one tunnel wall (30). The plurality of operating gloves (40) sealed to the at least one tunnel wall (30) so that the user can manually operate inside the contamination tunnel (20) through use of the operating gloves (40) from the at least on work space (10). A transport member (50) is provided inside the contamination tunnel (20) which supports the HV-battery (200) and is controllable to move the HV-battery (200) at least partially along the contamination tunnel (20).

The present disclosure refers to a battery pack, including a battery pack housing; a battery cell stack including a plurality of rechargeable battery cells, wherein the battery cell stack is accommodated within the battery pack housing; a liquid release system positioned above the rechargeable battery cells, wherein the liquid release system is configured to release a liquid toward the rechargeable battery cells when a release condition is detected; and a retention structure being configured for retaining the liquid released by the liquid release system, wherein the retention structure is in direct contact with an outer surface of the rechargeable battery cells.

A composite negative electrode active material for a rechargeable lithium battery includes the silicon-based negative electrode active material and a conductive material entangled on the surface of the Si-based negative electrode active material. The silicon-based negative electrode active material includes silicon nanoparticles and amorphous carbon coating layers on the surfaces of the silicon nanoparticles. The silicon-based negative electrode active material is porous and has a sphericity of 0.9 to 1.0. The pores include mesopores, and the ratio of a mesopore volume to the total pore volume of the Si-based negative electrode active material is 30% or more and less than 70%.

The present disclosure refers to a battery system (100), an electric vehicle (2000) including the battery system (100) and a method for the battery system (100). The battery system (100) includes a battery pack (10) with a plurality of battery cells (12) connected to two high voltage lines (14) to form a high voltage, HV, system (16). Each of the high voltage lines (14) includes a main high voltage switch (18) configured to connect the plurality of battery cells (12) to or disconnect the plurality of battery cells (12) from the respective high voltage line (14). The battery system (100) further includes a battery heating system (20) for heating the plurality of battery cells (12) of the battery pack (10) with a heating element (22) and a heating switch (24) connected in series with the heating element (22). The heating element (22) and the heating switch (24) are connected in parallel to one of the high voltage lines (14). The battery system (100) further includes a low voltage, LV, system (26) and a battery management system, BMS, (28) connected to the LV system (26). The BMS (28) includes a signal transmission means (30) configured to transmit a switching signal to the heating switch (24) in a galvanically isolated manner for controlling the heating switch (24) of the battery heating system (20). The battery heating system (20) is configured to receive the switching signal from the signal transmission means (30) of the BMS (28).

Provided are a method and apparatus (700) for controlling charging of a battery. The method of controlling charging of a battery (120) includes: measuring (210) a first impedance and a second impedance of the battery (120); calculating (220) an impedance variation based on a difference between the first impedance and the second impedance; setting (230) an end-of-charge voltage based on the impedance variation; and charging (240) the battery based on the end-of-charge voltage.

A negative electrode for a rechargeable lithium battery comprises 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 first negative electrode active material, a second negative electrode active material, a binder, and a conductive material. The first negative electrode active material is in the form of particles that each comprise silicon nanoparticles aggregated together and an amorphous carbon coating layer surrounding the silicon nanoparticles. The particles of the first negative electrode active material have a sphericity (S) of about 0.9 to about 1.0. The second negative electrode active material comprises crystalline carbon. The negative electrode active material layer has a mixture density of more than about 1.6 g/cc to not more than about 1.7 g/cc.

The present disclosure relates to a separator for a rechargeable battery, and a rechargeable battery including the separator. The separator for a rechargeable battery includes a porous substrate, and a coating layer formed on at least one surface of the porous substrate. The coating layer includes a core-shell binder having a core and a shell surrounding the core, and the shell has an adhesive functional group at a terminal thereof and has an alkylene glycol group-containing structural unit and a cyano group-containing structural unit.

A method of manufacturing an electrode assembly for secondary batteries capable of simultaneously improving the accuracy and speed of a stacking process and an electrode assembly manufactured using the method. The method includes preparing a current collection set, cutting the current collection set into a predetermined pattern; and stacking the current collection set that is cut.

The present disclosure relates to a positive electrode. The positive electrode includes a current collector, an adhesive layer on the current collector, a functional layer on the adhesive layer, and a positive electrode active material layer on the functional layer. The functional layer includes a first binder and functional particle, and the adhesive layer includes a second binder. The functional particle includes at least one of boron nitride (BN), aluminum nitride (AlN), alumina (Al₂O₃), silicon nitride (Si₃N₄), boehmite, zeolite, or kaolinite.

An apparatus (100) and method for inspecting stacking equipment (1) are disclosed. An apparatus for inspecting stacking equipment includes a vacuum sensor (140) which is installed on a transfer device of the stacking equipment and configured to detect a vacuum signal representing a degree of adsorption of a sheet (10), a camera (160) configured to capture an image of the stacking equipment, and a processor configured to analyze the vacuum signal input in real time during a process in which the sheet is transferred by the transport device to detect an abnormality in a transfer process of the stacking equipment and may analyze image data captured by the camera based on a time point when the abnormality is detected to analyze a cause of the abnormality.

A battery module includes a plurality of battery cells, a cooling plate positioned on the plurality of battery cells and including a main flow path, a first supply portion for supplying coolant to the main flow path, and a second supply portion for supplying fire extinguishing fluid to the main flow path, wherein the coolant and the fire extinguishing fluid are selectively supplied to the main flow path.

An electrode plate (1000) for secondary batteries, the electrode plate including an electrode current collector and an active material layer coated on at least one surface of the electrode current collector. The active material layer includes a concave portion (1210, 2210, 3210, 4210, 5210, 6210-6212, 7210-7213, 8210, 9210) disposed in a pattern on at least a part (14, 15) of the active material layer.

A method for detecting a connection defect in a sensing line includes measuring an overall voltage of a battery pack and a voltage of each of a plurality of cell banks included in the battery pack, calculating, based on the overall voltage and the voltage of each of the plurality of cell banks, a voltage deviation associated with each of the plurality of cell banks, and determining, based on the voltage deviation, one or more connection defects of at least one of a plurality of sensing lines associated with the plurality of cell banks.

The present disclosure relates to a positive electrode for a rechargeable lithium battery and a rechargeable lithium battery including the positive electrode. For example, the present disclosure relates to a positive electrode for a rechargeable lithium battery and a rechargeable lithium battery including the positive electrode. The electrode includes a positive electrode current collector, a first positive electrode active material layer on the positive electrode current collector, and a second positive electrode active material layer on the first positive electrode active material layer. The first positive electrode active material layer includes a first particle, wherein the second positive electrode active material layer includes a second particle, and a third particle. A ratio of an amount of the third particle relative to a total weight of the first, second and third particles is from ≥ 10 wt% to ≤ 30 wt%.

Disclosed are a carboxylmethyl cellulose lithium salt, a method of manufacturing the carboxylmethyl cellulose lithium salt, a negative electrode including the carboxylmethyl cellulose lithium salt, and a rechargeable lithium battery. The method of manufacturing a carboxylmethyl cellulose lithium salt includes performing an alkalization reaction of cellulose and lithium hydroxide, performing an etherification reaction with a halogen-containing acetic acid or a salt thereof, wherein an amine derivative is added during the alkalization reaction or the etherification reaction, and an amount of the halogen-containing acetic acid or a salt thereof added relative to the lithium hydroxide is controlled to a given amount.

The present disclosure relates to a positive electrode for an all-solid-state battery. The present disclosure describes a positive electrode current collector, and a positive electrode active material layer on the positive electrode current collector. The positive electrode current collector includes a main body section and a positive electrode tab protruding from the main body section in one direction. The positive electrode active material layer is provided on the main body section, and the positive electrode active material layer includes a positive electrode active material and a solid electrolyte. The main body section includes a first end and a second end opposite to each other in the one direction. The first end crosses a boundary between the positive electrode tab and the body section, and the main body section include a tab adjacent section extending from the first end toward the second end.

Provided are a separator for a rechargeable battery and a rechargeable battery including the separator. The separator for a rechargeable battery includes a porous substrate and a coating layer located on at least one surface of the porous substrate, wherein the coating layer includes a crosslinked product of a mixture including a first binder and a second binder, and a crosslinking agent; and a filler. The first binder is an aqueous binder, and the second binder is a carboxyalkyl cellulose-based compound or a salt thereof The crosslinking agent includes citric acid, and the citric acid is included in a range 5 parts by weight to 50 parts by weight with respect to 100 parts by weight of the total of the first binder and the second binder.

The present disclosure relates to a negative electrode active material for a rechargeable lithium battery, a negative electrode for a rechargeable lithium battery including the negative electrode active material, and a rechargeable lithium battery including the negative electrode. The negative electrode active material includes spherical graphite and an amorphous carbon layer around (e.g., surrounding) the spherical graphite, and the negative electrode active material has a volume ratio of the total volume of pores with a diameter of 100 nm to 1000 nm to a total pore volume of 3% or less and an orientation ratio of 90 or less.

The present invention relates to a positive electrode (10), a method for producing the positive electrode (10), and a rechargeable lithium battery (100) including the positive electrode (10). The positive electrode (10) includes a positive electrode current collector, a first positive electrode active material layer on the positive electrode current collector, and a second positive electrode active material layer on the first positive electrode active material layer. The first positive electrode active material layer includes a first binder, and the second positive electrode active material layer includes a second binder. The first binder includes a rubber-based binder, and the second binder includes a styrene-acrylic rubber . A thickness ratio of the first positive electrode active material layer to the second positive electrode active material layer is in a range of about 13:7 to about 19:1.

A secondary battery and a method of manufacturing a secondary battery are disclosed. A secondary battery includes an electrode assembly including an electrode tab, a case in which the electrode assembly is accommodated, a connection member electrically connected to the electrode tab, a side terminal electrically connected to the connection member, a cap plate coupled to an opening of the case and through which the side terminal passes, a first insulator insulating the cap plate from the connecting member, and a first bonding part bonding the first insulator and the cap plate.

A secondary battery (10) includes an electrode assembly (200) comprising a first electrode (230), a second electrode (240), and a separator (250) interposed between the first electrode (230) and the second electrode (240); a case (120) comprising a sidewall portion (122) surrounding a side surface of the electrode assembly (200) and a cover portion (121) extending in a horizontal direction from one side of the sidewall portion (122) on the electrode assembly (200); a terminal plate (160) that closes a first opening formed at a center of the cover portion (121) and is electrically connected to the first electrode (230); and a base plate (180) that closes a second opening formed on another side of the sidewall portion (122) and is electrically connected to the second electrode (240), wherein the first electrode (230) comprises at least one first substrate tab (210) electrically connected to the terminal plate (160), and wherein the second electrode (240) comprises at least one second substrate tab (220) electrically connected to the base plate (180).

The present disclosure relates to a negative electrode for an all-solid-state battery. 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 material, a metal, and a dielectric material. An amount of the metal is less than an amount of the carbon material, an amount of a dielectric material is less than an amount of the metal, and an amount of the dielectric material is in a range of about 1 wt% to about 10 wt% relative to a total weight of the coating layer.

Provided are a separator for a rechargeable battery, and a rechargeable battery including the separator. The separator includes a porous substrate, and a first layer and a second layer located on at least one surface of the porous substrate. The second layer includes a (meth)acrylic adhesive binder having a glass transition temperature of ≥ 50 °C and ≤ 130 °C. The first layer includes a crosslinked product of a mixture of a first binder and a second binder, and a crosslinking agent. The separator also includes a filler. The first binder includes an aqueous binder, the second binder includes a carboxyalkyl cellulose-based compound or a salt thereof. The crosslinking agent includes citric acid.

The present disclosure relates to a rechargeable lithium battery having desired or improved rapid charge-discharge characteristics. For example, the rechargeable lithium battery of the present disclosure comprises a positive electrode, a negative electrode and a separator interposed between the positive electrode and the negative electrode, wherein the positive electrode comprises a positive electrode active material, a first binder and a first conductive material, the first conductive material comprises carbon nanotubes. A ratio of an ionic resistance of the positive electrode to an ionic resistance of the negative electrode is ≥ 1.4 to ≤ 2.0.

A battery diagnosis device includes a temperature detector configured to detect temperatures of battery cells. An impedance detection device is configured to generate an AC current signal flowing through the battery cells, detect an AC voltage signal corresponding to the AC current signal for each of the battery cells, and detect impedance data of each of the battery cells based on the AC current signal and the AC voltage signal. A controller is configured to activate or deactivate the impedance detection device according to a temperature deviation of the battery cells and detect an abnormal cell among the battery cells based on the impedance data when the impedance detection device is activated.

Provided are a method and apparatus for performing a balancing of battery modules connected in parallel. The apparatus for performing the balancing of the battery modules connected in parallel includes a memory in which at least one program is stored and at least one processor executing the at least one program, wherein the at least one processor is configured to determine whether a difference of voltage values of a plurality of battery modules is within an identified range, identify one of a plurality of harnesses connecting the plurality of battery modules as a selected harness for performing the balancing, based on determining whether the difference is in the identified range, and perform the balancing of at least one module of the plurality of battery modules by using the selected harness.

An apparatus and method for predicting a life of a battery provided in an electric vehicle are described. A battery life prediction method includes generating, by a processor, field data through event-based profiling based on one or more detection results of voltage, current, and temperature collected from a battery; calculating, by the processor, a state of health (SOH) of the battery using the field data; extracting, by the processor, as log data, battery performance indicator data corresponding to an operating state of the battery from the field data; transmitting the log data to a server and collecting a life prediction value of the battery generated by the server based on the log data; and determining status related to the life of the battery based on comparing the SOH of the battery with the life prediction value of the battery; and performing an action with respect to the battery based on determining the status.

A composite solid electrolyte, a method of preparing the composite solid electrolyte, and a solid secondary battery including the composite solid electrolyte. The composite solid electrolyte includes a sulfide-containing solid electrolyte, a binder, and a filler composite, where the filler composite includes an organic fibrous filler and a metal oxide located on a surface of the organic fibrous filler.

The present disclosure relates to an electrode for a rechargeable lithium battery, a rechargeable lithium battery including the electrode, and a method for producing the electrode. The electrode includes an electrode current collector, a first active material layer on the electrode current collector, and a second active material layer on the first active material layer. The first active material layer includes a first active material and a first composite conductive material. The second active material layer includes a second active material and a second composite conductive material. The first composite conductive material includes a first carbon nanostructure and a first polymer, the first polymer being chemically bonded to a surface of the first carbon nanostructure. The second composite conductive material includes a second carbon nanostructure and a second polymer, the second polymer chemically bonded to a surface of the second carbon nanostructure.