Samsung SDI Patente

A battery module includes battery cells and a bus bar for connecting some of the battery cells in parallel to form parallel modules, and connecting in series the parallel modules differing from each other. The bus bar includes a first sub-bus bar for electrically connecting a first battery cell of the battery cells and a second battery cell of the battery cells, and a second sub-bus bar for electrically connecting a third battery cell of the battery cells and a fourth battery cell of the battery cells. A bus bar overlapping portion is formed where the first sub-bus bar overlaps and connects to the second sub-bus bar. The thickness of the bus bar overlapping portion is thicker than the thickness of the first sub-bus bar, and the thickness of the bus bar overlapping portion is thicker than the thickness of the second sub-bus bar.

A battery pack includes a housing (100), a plurality of battery cells (200) accommodated in the housing, a fire extinguishing member (300) facing the battery cells, and a support member (400) extending from the housing and configured to support the fire extinguishing member.

Disclosed are an electrode assembly, a method for manufacturing the electrode assembly and a rechargeable lithium battery including the electrode assembly. The electrode assembly includes an electrode current collector, an electrode active material layer on the electrode current collector, and a coating layer disposed on the electrode active material layer and integrated with the electrode active material layer. The coating layer includes a polymer nanofiber, the polymer nanofiber includes a first binder and a second binder, the first binder includes polyimide, the second binder includes at least one of polyvinylidene fluoride, polyvinylidene fluoride-trifluoroethylene, polyvinylidene fluoride-tetrafluoroethylene, polyvinylidene fluoride-hexafluoropropylene, polyvinylidene fluoride-trifluoroethylene-chlorotrifluoroethylene, polyamide, styrene butadiene rubber, carboxymethyl cellulose, an epoxy resin, polymethyl methacrylate, or a combination thereof.

The present disclosure refers to a coolant leakage detector (10) for detecting coolant in a battery system and a battery system including the same. The coolant leakage detector (10) includes at least one sensor housing (20; 20A, 20B); a first electrically conductive pin (30A) protruding from the at least one sensor housing (20; 20A, 20B); a second electrically conductive pin (30B) protruding from the at least one sensor housing (20; 20A, 20B); wherein the first electrically conductive pin (30A) and the second electrically conductive pin (30B) includes a different electrode material so that a galvanic cell voltage (Vgal) is created between the first electrically conductive pin (30A) and the second electrically conductive pin (30B) when the different electrode materials are fluid-connected by leaked coolant liquid; and a leakage detection monitoring unit (40) electrically connected to the first electrically conductive pin (30A) and the second electrically conductive pin (30B) and configured to sense leaked coolant based on the galvanic cell voltage (Vgal) between the first electrically conductive pin (30A) and the second electrically conductive pin (30B).

An apparatus and a method for inspecting an object are disclosed. A method of inspecting an object includes, when defects of a battery are inspected using a line scan camera, a plurality of one-dimensional images consecutively generated when an object is scanned in a unit of lines are combined to generate a two-dimensional local image, the generated two-dimensional local image is preprocessed, and then defects of the object are detected based on the preprocessed two-dimensional local image, and a line unit scanning operation of generating a one-dimensional image and a preprocessing operation of a two-dimensional local image are performed in parallel, or concurrently or simultaneously.

According to embodiments of the present disclosure, a formation device for a secondary battery includes a temperature controller for controlling a temperature of the secondary battery, a temperature sensor for measuring the temperature of the secondary battery, a charging/discharging unit including a probe contacting a terminal of the secondary battery, a vacuum tube for removing gas inside the secondary battery, and a controller for charging the secondary battery until a state of charge of the secondary battery reaches a termination capacity, wherein the controller controls the temperature controller to maintain a set temperature range for the temperature of the secondary battery measured by the temperature sensor during the charging, and controls the vacuum tube during the charging, and wherein the termination capacity may be 40 %-90 %.

A secondary battery including an electrode assembly including a lead tab, a body portion including an accommodating portion, a first terminal through-hole formed on one side of the body portion, and having an open end, a cover sealing the open end of the body portion, an insulator disposed on a lower surface of the one side of the body portion and including a second terminal through-hole formed at a position corresponding to the first terminal through-hole, a terminal plate having two sides, being disposed on a lower surface of the insulator, and having a third terminal through-hole formed at a position corresponding to the second terminal through-hole, a terminal passing through the first to third terminal through-holes, and a gasket surrounding at least a portion of a side surface of the terminal such that at least a portion of the terminal is exposed to an outside of the body portion.

A method for preparing a positive electrode active material includes preparing core particles including a lithium nickel-based composite oxide and mixing the core particles and water to wash the core particles. The method further includes removing a portion of the water so that the water is included in an amount of about 1 wt% to about 10 wt% based on a total 100 wt% of the core particles and water to obtain a washed product. The method also includes adding and mixing an aluminum raw material and a metal raw material into an aqueous solvent to prepare a coating solution. The method further includes adding the washed product into a mixer and performing heat treatment at about 300 °C to about 400 °C while or after spraying the coating solution. The metal raw material is a boron raw material or a tungsten raw material.

A positive electrode active material includes a first positive electrode active material having an average particle diameter (D<50>) of greater than or equal to about 10 µm and less than or equal to about 30 µm, with the first positive electrode active material including a first lithium nickel-based composite oxide. The positive electrode active material further comprises a second positive electrode active material having an average particle diameter (D<50>) of greater than or equal to about 5 µm and less than about 10 µm, with the second positive electrode active material including a second lithium nickel-based composite oxide. The positive electrode active material still further comprises a third positive electrode active material having an average particle diameter (D<50>) of greater than or equal to about 0.1 µm and less than about 5 µm, with the third positive electrode active material including a third lithium nickel-based composite oxide. Based on a total weight of the positive electrode active material, a sum weight of the second positive electrode active material and the third positive electrode active material is greater than about 20 wt% and less than about 40 wt%. A powder flow rate measured at 9 kPa using rheometer by adding 200 ml of the positive electrode active material to a 300 ml vessel, fixing the vessel to a device, and moving a blade counterclockwise at a speed of 100 mm/s is greater than or equal to about 4.2.

A secondary battery includes an electrode assembly including a positive electrode, a negative electrode, and a separator disposed between the positive electrode and the negative electrode. The electrode assembly is accommodated in a case body having opening. A cover is coupled to the case body to close the opening. The case body includes an accommodating part in which the electrode assembly is accommodated and a flange part that extending outward from the accommodating part. At least part of the cover is coupled to the flange part. The flange part comprises at least one coupling part arranged along a periphery of the flange and coupled to a coupling member. At least one avoidance part is formed in the cover such that the at least one coupling part is not covered by the cover.

A secondary battery includes: an electrode assembly including a first electrode, a second electrode, and a separator between the first electrode and the second electrode; a case accommodating the electrode assembly, and having an electrolyte injection hole penetrating one side of the case for injecting an electrolyte therein; and a sealing plate on the one side of the case to seal the electrolyte injection hole. The case and the sealing plate include a same metallic material as each other.

The present disclosure refers to a battery system (100) and a method of operating the battery system (100). The battery system (100) includes a battery pack (10) comprising a plurality of battery cells (12) accommodated within a housing (14). The battery system (100) further includes a fire extinguishing pump (20). The fire extinguishing pump (20) includes a chamber (22) comprising a first portion (30) and a second portion (40) separated by a movable barrier member (35) between the first portion (30) and the second portion (40), a fire extinguisher material (32) in the first portion (30) and an explosive material (42) in the second portion (40). An outlet (34) is provided in the first portion (30) of the chamber (22) to release fire extinguisher material (32) toward at least one of the battery cells (12). Further, an explosion trigger system (50) is configured to cause the explosive material (42) to explode to move the movable barrier member (35) thereby pushing at least some of the fire extinguisher material (32) through the outlet (34) in response to venting gas ejected from at least one of the battery cells (12).

A positive electrode active material, a method of preparing the same, a positive electrode, and a rechargeable lithium battery including the same, the positive electrode active material that includes a core that includes a lithium cobalt-based oxide and a coating layer on a surface of the core and that includes Y and La.

A battery system (1) according to the present disclosure includes a battery module (10) including a plurality of battery cells (11), and a battery control apparatus (20) that detects a plurality of battery data (B_DATA) indicating status of the plurality of battery cells (11) through electrochemical impedance spectroscopy for the plurality of battery cells (11), generates a degradation profile (USER A, USER B) of the plurality of battery cells (11) based on the plurality of battery data, and controls use conditions of the plurality of battery cells (11) based on a comparison result of the degradation profile (USER A, USER B) and a reference degradation profile (ref).

A battery diagnostic device and method are disclosed. The device includes: a measuring device to measure status values of a formed battery; a charge and discharge device to charge and discharge the battery over a plurality of cycles; and a control device to detect a discharge capacity in each cycle based on the status values measured in each cycle, detect an initial capacity increase amount of the battery based on a difference in discharge capacity between two cycles, detect a negative electrode undischarged capacity of the battery based on the discharge capacity in at least one cycle, and diagnose a formation status of the battery based on the initial capacity increase amount and the negative electrode undischarged capacity. Based on the diagnosis result, the control device is configured to invoke a second formation of the formed battery.

A cap assembly for a rechargeable battery includes a upper cap. A vent plate is positioned below the upper cap. A curable component-containing structure is positioned between the upper cap and the vent plate.

A switch control apparatus includes: a controller configured to generate a safety signal, an enable signal, and a first reset signal; a timer circuit configured to receive the safety signal, to further receive the first reset signal via a first node, and to generate a second reset signal; and a latch circuit configured to receive each of the safety signal and the enable signal, to further receive a third reset signal based on at least one of the first reset signal or the second reset signal via a second node, and to generate a retain signal, wherein in the switch control apparatus, a first path including the first node, the timer circuit, and the second node, and a second path including the first node and the second node are formed, and the second path is different from the first path.

A positive electrode active material includes a lithium nickel-based positive electrode active material having a nickel amount of greater than or equal to about 80 mol% based on 100 mol% of metal in the lithium nickel-based positive electrode active material excluding lithium. The lithium nickel-based positive electrode active material includes aluminum, boron, and magnesium dopants. A peak full width at half maximum (FWHM) of a (003) plane measured by X-ray diffraction analysis is greater than or equal to about 0.1.

A negative electrode active material includes a silicon-carbon composite material. The silicon-carbon composite material comprises a first layer disposed at a center of the silicon-carbon composite material and including a hard carbon-based porous carbon material having silicon coated therein. A second layer coating is formed on the outside of the first layer and including one or more of a two-dimensional nanomaterial including graphene, graphene oxide, MXene, molybdenum disulfide, and graphyne.

An electrode assembly, including a first electrode, a second electrode, and a separator between the first electrode and the second electrode, wherein the electrode assembly is wound around a winding axis, and the first electrode includes a substrate including a first portion extending toward one side of the electrode assembly, the first portion having a first height, a second portion extending toward the one side of the electrode assembly, the second portion having a second height being different from the first height, and a mixture layer on a portion of the substrate.

A positive electrode active material includes polycrystalline large particles and single-crystalline small particles. The polycrystalline large particles have an average particle diameter (D<50>) of about 9 µm to about 20 µm. The single-crystalline small particles have an average particle diameter (D<50>) of about 1 µm to about 9 µm.

An electrode includes a current collector and an active material layer formed on at least one surface of the current collector. The active material layer includes first engraved patterns spaced apart from each other and extending in a first direction and a second engraved pattern extending in a second direction intersecting the first direction.

A conductive material dispersion for a rechargeable lithium battery, a positive electrode for a rechargeable lithium battery, and a rechargeable lithium battery are disclosed. A conductive material dispersion for a rechargeable lithium battery includes a conductive material and a dispersant, and the conductive material includes carbon nanotubes having an average diameter of 4 nm or more and 15 nm or less and an average specific surface area of 200 m²/g or more and 800 m²/g or less, the dispersant includes hydrogenated nitrile butadiene rubber having a weight average molecular weight of 200,000 to 500,000 g/mol, and the dispersion satisfies Equation 1 herein.

The present invention relates to a secondary battery and a method of manufacturing the same, and is directed to providing a secondary battery capable of being manufactured by only bending after welding, for high assembly efficiency, and having a wide welding area allowing all tabs to be welded to a connection member, for improved heat dissipation performance due to reduced resistance, and a method of manufacturing the same. To this end, the present invention provides a secondary battery including a case (100); an electrode assembly (200) disposed inside the case (100) and including a first electrode (210) and a second electrode (220); a first tab member (310) connected to the first electrode (210)and extending from the electrode assembly (200); a cap assembly (400) disposed to face the electrode assembly (200) and including a first terminal (420) and a second terminal (430); a first connection member (500) that electrically connects the first terminal (420) of the cap assembly (400) to the first tab member (310); and a first connection hole (312) formed in the first tab member (310) so that the first connection member (500) is inserted into the first connection hole (312).

A battery condition prediction apparatus includes a processor, and a memory that stores instructions executed by the processor, wherein the processor is configured to predict a condition or a lifetime of a battery based on features extracted from scan data generated based on terahertz waves transmitted through the battery.

A battery design plan generation system (100) according to an embodiment of present disclosure may comprise: a battery design plan adjustment device (120) configured to generate, by adjusting a first battery design plan, a second battery design plan; a simulation device (140) configured to generate a first simulation result data based on the second battery design plan; and a battery design plan evaluation device (140) configured to generate first feedback data by evaluating the second battery design plan based on the first simulation result data, and provide the first feedback data to the battery design plan adjustment device (120), wherein the battery design plan adjustment device (120) comprises a battery design adjustment module (121) configured to drive a large language model (LLM) that adjusts design information of the first battery design plan.

The present disclosure relates to a method for assembling a battery pack including at least one battery cell stack, where the stack includes a plurality of battery cells arranged in a compressed state. The method includes the steps of:a) compressing the battery cell stack using a compression tool and maintaining the applied pressure during subsequent assembly steps;b) attaching a stack holder to the battery cell stack in its compressed state, wherein the stack holder includes two profiles each extending along a lateral side of the battery cell stack, each profile including an upper portion extending beyond the lateral side of the battery cell stack and having first engagement elements;c) providing a lifting tool including second engagement elements designed to be engaged with the first engagement elements, interlocking the second engagement elements with the first engagement elements of the stack holder by the lifting tool, lifting of the battery cell stack and positioning the lifted cell stack above an accommodation chamber of a pack housing;d) transferring the battery cell stack from the compression tool directly into the accommodation chamber of the pack housing; ande) detaching the second engagement elements of the lifting tool from the first engagement elements of the stack holder, allowing the lifting tool to separate from the stack holder, with the stack holder remaining in the accommodation chamber along with the battery cell stack.

A contactor lifetime prediction apparatus includes a measurement circuit configured to measure a current flowing in a contactor, and a processor configured to calculate a number of cycles of the contactor based on the current measured by the measurement circuit when the contactor is turned on or off, to accumulate the calculated number of cycles, and to predict a lifetime of the contactor.

The present disclosure relates to a battery pack process control apparatus and method, and a technical problem to be solved is to effectively track a wireless battery management system (WBMS) by identifying a location and movement speed thereof in real time, and to accurately identify the WBMS (10). Thus, the present disclosure provides a battery pack process control apparatus (100), which transmits and receives signals for detecting a WBMS (10) moving along a production line, detects the WBMS (10) based on the transmitted signal and received signal of the communication unit (130), determines a location and speed of the WBMS (10), identifies and tracks the WBMS (10) in real time, and controls a designated program to be flashed to the WBMS (10) when the WBMS (10) reaches a designated flashing location, and a battery pack process control method.

A system (1300) and method for thermal propagation evaluation as disclosed. The method for thermal propagation evaluation includes machining a hole (510) in a long side of a battery can (59), attaching a heater (520) through a region in which the hole (510) is formed, and sealing the region in which the hole (510) is formed.

A rechargeable battery, including an electrode assembly, a case accommodating the electrode assembly, a cap plate coupled to an opening of the case, the cap plate including a first vent, and an insulation member having a second vent, the insulation member being between the electrode assembly and the cap plate, the electrode and the cap plate being inside the case.

The present disclosure provides a battery assembly. The battery assembly may include a stack comprising a plurality of battery cells stacked in a first direction, a bus bar holder on the stack, and a support member on the bus bar holder. The support member may include a first support member that supports a first side surface of the stack and a second support member that supports a second side surface of the stack, and at least a portion of the first support member may overlap at least a portion of the second support member in a second direction that is different from the first direction.

The present disclosure refers to a liquid leakage detector (10) for detecting liquid in a battery system. The flexible flat cable, FFC, (20), including: at least a first electrical conductor (22) and a second electrical conductor (24) extending parallel to each other; an insulating layer (26) at least partially enclosing the first and/or the second electrical conductor (22, 24). An electrical resistor (30) located at a first end portion (E1) of the FFC (20) electrically connected with the first electrical conductor (22) and the second electrical conductor (24) at the first end portion (E1). A first opening (27) in the insulating layer (26) providing a first exposed portion (23) of the first electrical conductor (22) with respect to the insulating layer (26) and a corresponding second opening (28) in the insulating layer (26) providing a second exposed portion (25) of the second electrical conductor (24) with respect to the insulating layer (26). A detection unit (40) electrically connected to the first electrical conductor (22) and the second electrical conductor (24) at a second end portion (E2) opposite to the first end portion (E1), the detection unit (40) configured to detect liquid based on identifying an electrical current flowing between the first exposed portion (23) and the second exposed portion (25) via the liquid.

A secondary battery (10) includes a battery can (11) having a bottom portion (11c) and sidewall portions (11a) and open to an outside through an opening; an electrode assembly (20) having a stack structure of a positive electrode plate (23), a separator (21), and a negative electrode plate (24) and mounted inside the battery can (11); and a cap assembly fixed to the opening of the battery can (11) and connected to the electrode assembly, wherein a lower portion of the electrode assembly (20) includes a bottom fusion folding portion (21a), formed by heat-fusing and folding an edge of the separator (21), is in contact with the bottom portion (11c) of the battery can (11), and supports the electrode assembly (20).

A secondary battery includes a can having a substantially cylindrical geometry, the can including an open end and a closed end; an electrode assembly accommodated within the can; and a cap assembly including a vent plate and a gasket, the vent plate disposed on the open end facing the electrode assembly, the gasket including an insulating material and disposed between the vent plate and the can, wherein a partial area of the open end has a thickness greater than a thickness of a remaining area. The secondary battery having a certain target crimping force may have a thickness of a crimping portion, except for a beading portion, being adjusted. If the thickness of the crimping portion is reduced, crimping may be released at a low pressure, resulting in quick opening and gas release.

Aspects herein relate to a secondary battery (100). The secondary battery may include an electrode assembly (140) configured such that a first electrode plate (142), a second electrode plate (144), and a separator (146) are wound together, a case (110) configured to receive the electrode assembly (140) therein, a cap assembly (130) configured to seal the case (110), and a composite current collecting plate (150) located between the electrode assembly (140) and the cap assembly (130), the composite current collecting plate (150) having a plurality of lead tabs (154, 156) integrally formed thereon and being electrically connected to the first electrode plate (142) and to the cap assembly (130), the plurality of lead tabs (154, 156) being connected to the cap assembly (130).

The present disclosure refers to a battery module with a cooling system including plastic cooling plates. This allows for an efficient cooling and extinguishing in case of a thermal run-away. Further, the present disclosure relates to a vehicle, in which at least one battery module with a cooling system including plastic cooling plates is employed. Moreover, the present disclosure is related to a method for controlling a battery module with a cooling system including plastic cooling plates.

The present disclosure relates to a carbon nanotube, a conductive material dispersion including the carbon nanotube, and a method for manufacturing an electrode for a rechargeable lithium battery using the carbon nanotube. The carbon nanotube has a mesopore diameter distribution in the range of about 1.7 nm to about 300 nm as measured by a Barrett-Joyner-Halenda (BJH) method. A peak top mesopore diameter A in the distribution satisfies 30 nm ≤ A ≤ 40 nm, a full width at half maximum (FWHM) of the distribution is in the range of about 40 nm to about 55 nm; and a specific surface area of about 500 m²/g or less as measured by a Brunauer-Emmett-Teller (BET) method.

The present disclosure relates to a positive electrode slurry, a positive electrode for rechargeable lithium battery, and a method for manufacturing a positive electrode for a rechargeable lithium battery. A positive electrode slurry includes a positive electrode active material, a conductive material, a binder, and an additive for preventing gelation. The positive electrode active material includes a nickel-based first positive electrode active material having a layered structure, and a phosphate-based second positive electrode active material. A weight ratio of the first positive electrode active material to the positive electrode active material is in a range of about 50 wt % to about 95 wt %. The additive for preventing gelation includes at least one of oxalic acid, succinic acid, malic acid, fumaric acid, or a combination thereof.

A battery management system (400) includes a battery pack (300) includes a plurality of battery modules (340), and a plurality of battery-management modules (410) respectively corresponding to the plurality of battery modules (340), wherein each of the plurality of battery modules (340) includes a first set of temperature sensors (11, 13) disposed at a first position (341) of the battery module (340), and a second set of temperature sensors (21, 23) disposed at a second position (343) of the battery module (340) different from the first position (341), and wherein each of the plurality of battery-management modules (410) includes a first analog front end (413a) connected to at least one temperature sensor of the first set of temperature sensors (11, 13), and a second analog front end (413b) connected to at least one temperature sensor of the second set of temperature sensors (21, 23).