Samsung SDI Patente

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 (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 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.

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 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.

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, 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.

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.

Disclosed herein are a battery casing, a battery pack, and a method of manufacturing battery packs. The battery casing is configured to house a plurality of battery cells, and includes a first casing, and a second casing coupled to the first casing at a bonding area by laser bonding. The first casing has a convex semicircular cross-sectional shape in the bonding area.

An extruder (10) includes: a supply module (100); a mixing module (200) to form an electrode slurry (30) by mixing an active material, a binder, and a conductive material from the supply module (100); a discharge module (300) to discharge the electrode slurry (30); and a sensor (250) to measure a characteristic value of the electrode slurry (30). The mixing module (200) includes a first screw (211) and a second screw (212), the first screw (211) and the second screw (212) including screw threads (211b, 212b) on an outer circumference thereof to rotate to engage with each other; a barrel (220) including a first barrel (220_1) and a second barrel (220_2) accommodating the first screw (211) and the second screw (212), respectively, and facing each other to form a hole through which the electrode slurry (30) is transmitted; a first gap adjustment module (240) to adjust a gap between the first barrel (220_1) and the second barrel (220_2); and a control module (500) to control the first gap adjustment module (240) based on the measured characteristic value.

The present disclosure relates to a battery module, and the technical problem to be solve is to provide a battery module eliminating a pressure imbalance. To this end, the present disclosure provides a battery module, which includes a cell assembly comprising a plurality of battery cells; and a band that includes an elastic material, and surrounds the cell assembly while applying pressure, wherein each of the plurality of battery cells includes a case; and a pair of tabs extending from at least one side of the case and passing through the band.

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).

The present application relates to a welding device (1) which includes a driving portion (10) that generates ultrasonic waves, a welding horn (20) connected to the driving portion (10), and an anvil, wherein the welding horn (20) is configured to be positioned on one side of a welding object and the anvil is configured to be positioned on an other side of the welding object, wherein the welding horn (20) and the anvil, together, are configured to pressurize the welding object, wherein the welding horn (20) includes a body portion (21), a welded portion formed along an outer surface of the body portion (21), wherein the welded portion includes a first welded portion formed along the outer surface of the body portion, and a second welded portion formed on one side of the first welded portion. A method of manufacturing an electrode is also described.

The present disclosure provides an apparatus for notching and a method for notching. The apparatus for notching includes at least one wire cutter that cuts at least one of a first side surface and a second side surface positioned opposite to the first side surface and at least one pattern cutter that cuts at least one of the first side surface and the second side surface to form a cut pattern, and the wire cutter is disposed to face the electrode plate along the first direction.

A laser notching apparatus of the present disclosure includes a supporting member for supporting an electrode plate; and a laser irradiating member above the supporting member and which irradiates a laser to the electrode plate at a set angle to cut the electrode plate.

A laser test device for a laser selection includes a roll-to-roll unit, a laser irradiation unit, and an inspection unit. The roll-to-roll unit includes a supply roller for unwinding a substrate sheet and a winding roller for rewinding the substrate sheet, and roll-to-roll unit transports the substrate sheet at a predetermined speed. The laser irradiation unit includes a laser oscillator, a scanner and an optical system, and irradiates a laser beam for notching the substrate sheet being transported to thereby form a plurality of extension tabs in the substrate sheet. The inspection unit is positioned at the rear of the laser irradiation unit and obtains a magnified image of the notched area of the substrate sheet being transported.

A roll press apparatus (100) for manufacturing an electrode plate (11), the roll press apparatus including a frame portion (10), a first pressure roller (20) rotatably fixed on the frame portion to press a first surface of the electrode plate, the first pressure roller being configured to have a first expansion roller (23) protruding at each of opposite ends of the first pressure roller, a second pressure roller (30) rotatably fixed on the frame portion to pressurize a second surface facing the first surface of the electrode plate, the second pressure roller being configured to have a second expansion roller (33) protruding at each of opposite ends of the second pressure roller, and a driver (40) configured to provide a driving force to the first pressure roller and the second pressure roller

An apparatus for inspecting a coating status of punching oil includes a first sprayer, a first inspector, and a second sprayer, and a control unit. The first sprayer sprays punching oil onto an electrode plate according to a first spray direction and a first spray amount setting value, the first inspector acquires a first image of the electrode plate by using a first camera, the control unit determines whether or not an uncoated area of the electrode plate is present based on the first image, and when the uncoated area is determined to present on the electrode plate, the control unit sets a second spray direction and a second spray amount setting value to be applied by the second sprayer, and the second sprayer sprays punching oil onto the electrode plate according to the second spray direction and the second spray amount setting value.

A coating apparatus may include a separating part configured to separate a composite substrate including a first substrate, a second substrate, and a central functional layer between a first surface of the first substrate and a first surface of the second substrate. The separating part may include a first slurry nozzle positioned at one side of the separating part and configured to apply a slurry onto the first surface of the first substrate, and a second slurry nozzle positioned at an other side of the separating part and configured to apply an other slurry onto the first surface of the second substrate. An electrode manufacturing apparatus may include the coating apparatus.

A dry electrode fabricating apparatus includes a chute including a chute housing. The chut housing includes an inner space in which an electrode powder is accommodated, an inlet port through which the electrode powder is input to the inner space, and an outlet port through which the electrode powder is discharged from the inner space. The chute also includes a plurality of spacers that divide the outlet port into a plurality of outlets and are coupled to the chute housing. The apparatus also includes a pair of calender rolls between which a gap is formed in which the electrode powder discharged through the outlets passes and is compressed into columns of electrode films.

A secondary battery and a battery module are disclosed. A secondary battery includes a case accommodating an electrode assembly; and a sensor, and the sensor includes a circuit on a surface of the case and configured to be shorted in response to a volume of the case reaching a certain volume or more; and a processor configured to determine a state of the secondary battery based on whether the circuit is shorted.

An explosion-proof panel (100) includes a support portion (110) fixed to a container portion (12), the container portion accommodating one or more battery modules, a cover portion (120) parallel to the support portion (110), and a length-adjusting portion (130) configured to adjust a separation distance between the support portion (110) and the cover portion (120), wherein the cover portion (120) is movable in a first direction D1 according to an internal pressure of the container portion, the separation distance being adjustable.

An energy storage system includes a battery container including a master battery container and sub-battery containers electrically connected to each other, and a power conversion system, PCS, wherein the master battery container includes battery racks, a system battery management system, BMS, configured to monitor states of the battery racks and of battery racks included in the plurality of sub-battery containers, and configured to control operations thereof, a master programmable logic controller, PLC, configured to monitor a state of the master battery container, a first switch controlled by a switching control signal generated by the master PLC upon receiving a request from the system BMS, and a second switch controlled by a switching control signal of the system BMS, wherein the system BMS and the PLC are further configured to transmit or receive data through a contact method.

The present disclosure relates to a protection circuit module and a battery assembly including the same. The protection circuit module may include a first substrate on which a first-first connection member connected to a first electrode terminal of a battery cell and a second connection member connected to a second electrode terminal of the battery cell are located, and a second substrate connected to the first substrate and on which a first-second connection member is located, wherein the second substrate may be electrically connected to the first-first connection member from among the first-first connection member and the second connection member.

The present disclosure relates to a battery module, and the object to be solved is directed to providing a battery module capable of preventing heat propagation of a battery using an insulating cover. To this end, the present disclosure provides a battery module including one or more cell stacks formed by arranging a plurality of battery cells and having a first stack surface facing in a first direction and a second stack surface facing in a second direction and a module case in which the cell stacks are accommodated, wherein the battery cell includes an electrode assembly, a cell case having a first surface facing in the first direction and a second surface facing in the second direction, and an insulating cover coupled to the first surface and the second surface, and the second stack surface is insulated by a plurality of insulating covers provided on a plurality of battery cells.

The present disclosure relates to a secondary battery inspection apparatus, a secondary battery inspection method, and a secondary battery manufacturing method, and the problem solved by the present disclosure is to identify an internal state of a secondary battery in a non-destructive manner. A secondary battery inspection apparatus according to one embodiment includes a magnetic field generator configured to apply a magnetic field to the secondary battery to be tested, a high frequency generator configured to generate a high frequency of a predetermined frequency and apply the high frequency to the secondary battery to be tested, a sensor configured to detect electromagnetic waves emitted from the secondary battery to be tested to which the high frequency is applied while the magnetic field is applied and a processor configured to determine an internal state of the secondary battery to be tested using the emitted electromagnetic waves detected by the sensor.

A battery module includes: a housing; a plurality of battery cells accommodated in the housing and each including a case including a vent hole and a cell terminal protruding from the case; a bus bar electrically connecting the cell terminal of a battery cell of the plurality of battery cells and the cell terminal of another battery cell of the plurality of battery cells; and a bus bar holder including a holder body that supports the bus bar and includes a holder through hole corresponding to the vent hole, and a first protective member including an insulating material and located between the holder body and the case to face the case.

A method for preparing a positive electrode active material includes: (1) pulverizing a carbon-based raw material to prepare carbon-based fine powder having an average particle diameter of about 10 nm to about 100 nm, (2) mixing a lithium metal composite oxide and the carbon-based fine powder to prepare a mixed powder, and (3) applying rotation of about 1,000 rpm to about 6,000 rpm for about 2 minutes to about 10 minutes to the mixed powder to form or provide a carbon-based coating layer on a particle surface of the lithium metal composite oxide Also disclosed are a positive electrode active material and a rechargeable lithium battery including the positive electrode active material.

The present disclosure relates to a secondary battery module and is directed to providing a secondary battery module capable of maintaining a physically stable structure even when a secondary battery deforms. The secondary battery module includes a plurality of secondary batteries arranged in a first direction, and a partition member positioned in a gap between two adjacent secondary batteries among the plurality of secondary batteries. The partition member has a variable length at least in the first direction in response to an electrical signal applied to the partition member.

A secondary battery includes: an electrode assembly including a first electrode, a second electrode, and a separator interposed between the first electrode and the second electrode; a lower case having an open top, and including a receiving portion to receive the electrode assembly; and an upper case sealing the open top of the lower case. A first electrode terminal electrically connected to the first electrode is located on one side surface of the lower case; the upper case is integrally extended from an upper edge portion of the one side surface; and the upper case is connected to edge portions of the lower case, other than the upper edge portion of the one side surface, from among open upper edge portions of the lower case.

An electrolyte for a rechargeable lithium battery and a rechargeable lithium battery including the same are provided. The electrolyte includes a non-aqueous organic solvent; a lithium salt; and an additive, and the additive includes a mixture of a first additive represented by Chemical Formula 1 and a second additive represented by Chemical Formula 2.

The present disclosure relates to a secondary battery, and the technical problem to be solved is to provide a secondary battery that can secure current interruption performance due to high current and reduce cell resistance. To this end, the present disclosure provides a secondary battery including a fire extinguishing agent structure that includes a disk-shaped member; and a stick-shaped member vertically connected to the disk-shaped member, wherein the stick-shaped member and the disk-shaped member include a fire extinguishing agent that causes an endothermic reaction at a temperature of 100 °C or higher.

A positive electrode active material includes: core particles including a lithium nickel-based composite oxide having a nickel content (e.g., amount) of at least about 80 mol% based on 100 mol% of a total metal excluding lithium in the lithium nickel-based composite oxide; and a coating layer disposed on a surface of each core particle and including aluminium, wherein the core particles are each in a form of a secondary particle in which a plurality of primary particles is agglomerated, an aluminium content (e.g., amount), based on total 100 at% of nickel, cobalt, and aluminium is about 10 at% to about 15 at% as measured by energy profiling energy dispersive spectroscopy (EP-EDS) on a surface of a positive electrode active material particle including the core particle and the coating layer.

The present disclosure relates to a battery protection circuit module to which an authentication circuit unit (410; 420) is applied and a method of protecting an authentication circuit unit (410; 420) using the same, and more particularly, to a battery protection circuit module including a part arrangement design that is robust against external environment noise and a method of protecting an authentication circuit unit (410; 420) using the same. A battery protection circuit module to which an authentication circuit unit (410; 420) is applied may include an authentication circuit unit (410; 420) connected to an output stage of the battery protection circuit module and a protection device configured to protect the authentication circuit unit (410; 420) against external noise.

The present disclosure relates to a rolling apparatus for manufacturing an electrode and a method of operating the rolling apparatus. A mechanism for is provided for inputting a rolling gap between a first roller and a second roller for rolling an electrode, thereby minimizing a quality deviation of the electrode. To this end, the present disclosure provides a configuration for predicting a rolling gap value using a gap prediction model and performing control such that a rolling gap between a first roller and a second roller becomes the predicted rolling gap value.

The present disclosure relates to a bonding strength inspection apparatus capable of inspecting a bonding strength of a bonding part without destruct an inspection target. The present disclosure provides a bonding strength inspection apparatus (300) comprising: a roughness measurement part (310) configured to measure a roughness of a bonding part (W) in which a base metal and a bonding member are bonded to each other; and a processor (320) configured to determine a bonding strength of the bonding part (W) based on the roughness.

A positive electrode active material includes a lithium nickel-based composite oxide in a form of secondary particles, each of the secondary particles being formed by aggregated primary particles. A coating layer including amorphous carbon and carbon nanotubes is provided on surfaces of the secondary particles. The carbon nanotubes in the coating layer are randomly arranged on the surfaces of the secondary particles and physically interconnect the primary particles. The amorphous carbon in the coating layer is disposed between the secondary particles and the carbon nanotubes.

A battery cell holder (100) to mount a battery cell (1) therein and a battery pack are disclosed. The battery cell holder may include a first body (110) at an upper portion and a lower portion of the battery cell, having a first set of exposure grooves to expose a first electrode terminal and a second electrode terminal of the battery cell, and extending around a side of the battery cell; a second body (120) coupled to the first body (110), at the upper portion and the lower portion of the battery cell, having a second set of exposure grooves to expose the first electrode terminal and the second electrode terminal of the battery cell, and extending around another side of the battery cell; a first electrode tab (130) that contacts a first electrode terminal of the battery cell; and a second electrode tab (140) that contacts a second electrode terminal of the battery cell.

Disclosed are negative electrodes and rechargeable lithium batteries. The negative electrode includes a negative electrode current collector and a negative electrode active material layer thereon. The negative electrode active material layer includes a first graphite having a first average particle diameter and a second graphite having a second average particle diameter. The second average particle diameter is greater than the first average particle diameter. The negative electrode active material layer includes a first negative electrode active material layer on the negative electrode current collector, a second negative electrode active material layer on the first negative electrode active material layer, and an intermediate layer between the first and second negative electrode active material layers. The intermediate layer has a slope that is equal to or greater than about 2.33 in a normalized graph obtained by measuring a horizontal direction force that depends on a cutting depth.

A cap assembly including a cap plate, a terminal plate joined to an opening in the cap plate, and an insulator between the cap plate and the terminal plate, wherein the terminal plate includes a current collector portion electrically connectable to an electrode assembly, and an electrode terminal portion continuously connected to the current collector portion in a longitudinal direction of the terminal plate.