Samsung SDI Patente

The present disclosure relates to a battery apparatus and a battery pack that are made safer by detecting a battery charging situation through a discharge path (400) when the battery pack is in a shutdown state of the battery pack. To this end, the present disclosure provides a configuration for waking up a processor (100) using a voltage at both ends of a current detection element (500) when the processor (100) is in a sleep state and a battery is charged by a charging current supplied through a discharge path (400).

The present disclosure relates to a thermal runaway detection method and a thermal runaway detection device and battery system performing the same. An embodiment provides a thermal runaway detection device including: a measuring device configured to measure a temperature of a battery; and a control device configured to monitor the temperature of the battery based on a measurement value received from the measuring device, the control device being further configured to determine that a thermal runaway event has occurred in the battery based on the temperature of the battery and a status of the measuring device satisfying one or more conditions.

A nozzle cleaning apparatus includes a nozzle insertion hole into which a nozzle having a coating liquid discharge hole is inserted, a nozzle accommodation space that accommodates the nozzle inserted into the nozzle insertion hole, an air nozzle that sprays air toward the discharge hole of the nozzle accommodated in the nozzle accommodation space, and an air guide pipe that guides to the air nozzle the air to be sprayed, wherein the air nozzle is configured to spray the air toward the discharge hole from around the nozzle.

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.

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.

The present disclosure relates to a battery protection circuit module and a method of protecting a battery using the same, and more particularly, to a battery protection circuit module that prevents an overvoltage protection malfunction and a method of protecting a battery using the same. A battery protection circuit module may include a first integrated circuit (IC) disposed relatively closely to an output stage, a first field effect transistor (FET) connected to the first IC, a second IC disposed relatively closely to an input stage, a second FET connected to the second IC, and a first shunt resistor disposed at a preset node by considering a difference between voltages recognized by the first IC due to a second shunt resistor and the second FET that are connected to the second IC.

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.

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.

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 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.

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.

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.

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.

A busbar holder (200) includes: a bridge portion (240) between a plurality of through holes into which a busbar (30) is inserted; and a buffer portion (220, 230) extending inwardly from one side surface (280, 290) of a through hole from among the through holes, and having an upwardly bent shape, the one side surface (280, 290) facing the bridge portion (240).

A battery case, a battery pack, and a method for manufacturing a battery pack are provided. The battery case may include a first case, a second case fastened and coupled to the first case through a plurality of fastening parts, a vibration absorbing member in the plurality of fastening parts and configured to absorb vibration or shock applied to the plurality of fastening parts, and a coupling member adjacent to the vibration absorbing member and configured to prevent the vibration absorbing member from detaching and to couple the first case and the second case.

Disclosed are a separator-integrated type electrode, a manufacturing method thereof, and an electrode assembly and a rechargeable lithium battery including the separator-integrated type electrode, the separator-integrated type electrode including an electrode, and a polymer fiber layer on the electrode. The polymer fiber layer includes polyacrylic acid. A tensile strength of the polymer fiber layer in the MD direction is greater than or equal to about 120 kgf/cm<2>. Air permeability of the polymer fiber layer is less than or equal to about 500 sec/100 cc.

An electrode manufacturing apparatus includes an electrode plate transfer device configured to transfer an electrode plate in a first direction while supporting the electrode plate, with the electrode plate including a first region in which an active material layer is formed and a second region, in which the active material layer is not formed. The electrode manufacturing apparatus also including a camera configured to acquire an image of the electrode plate supported by the electrode plate transfer device and an electrode tab placement device that is configured to place an electrode tab in the second region, with the electrode tab placement device being movable in a second direction intersecting the first direction. The electrode manufacturing apparatus further includes a processor configured (i) to determine a placement position at which the electrode tab is to be placed using the image and (ii) to adjust a position of the electrode tab placement device in the second direction so that the electrode tab is placed at the determined placement position.

A venting apparatus for a secondary battery includes a spring having a top end and a bottom end, a sub-terminal plate connected to the top end of the spring, the sub-terminal plate being under a terminal plate having a vent, a vent plate connected to the bottom end of the spring, the vent plate having high and low positions changeable in response to a pressure within the secondary battery, and a discharge preventer on an opening of a case of the secondary battery, the discharge preventer being between the vent plate and the opening of the case, and the discharge preventer being configured to prevent a discharge of a material other than a gas within the secondary battery.

Disclosed are a copper substrate for a negative electrode for a rechargeable lithium battery, a negative electrode including the copper substrate, and a rechargeable lithium battery including the negative electrode. The copper substrate has a microstrain according to Lab source Powder X-ray diffraction analysis of from about 0.04% to about 0.17%.

A cap assembly (30), including a cap plate (31) having a hole therein, a terminal plate (330) having a lower portion (332) in the hole, and an upper portion (331) above the cap plate and exposed, and a sub-plate (350) below the cap plate, the sub-plate being bonded to the lower portion of the terminal plate.

Examples of the disclosure include a spacer including a polymer matrix, and an endothermic flame retardant dispersed in the polymer matrix. The polymer matrix includes a fiberized polymer, and the endothermic flame retardant is included in a content in a range of ≥ 60 wt% to ≤ 98 wt% with respect to a total weight of the spacer.

A battery pack (1000) includes a plurality of battery cells (100) including a first battery cell (100a) and a second battery cell (100b), and a tab (200) electrically connecting the plurality of battery cells, and the tab includes a first joint portion (210) joined to the first battery cell and including a first material, and a second joint portion (220) joined to the second battery cell and including a second material.

Provided are a dry binder including a crosslinking reaction product in which a polyurethane-based polymer is crosslinked by an epoxy crosslinking agent, an electrode including the dry binder, and a rechargeable lithium battery including the dry binder.

A cap assembly (130) for a secondary battery (100), includes: a cap plate seated on and coupled to an open end of a case accommodating an electrode assembly, the cap plate having a through-hole therethrough; a terminal plate electrically connected to the electrode assembly, and inserted into the through-hole of the cap plate; a first insulating member between the cap plate and the terminal plate to provide electrical insulation between the cap plate and the terminal plate; and a second insulating member at an outside of the first insulating member to provide electrical insulation between the cap plate and the terminal plate.

A battery module includes a plurality of battery cells, with each of the battery cells including battery cell terminals and a battery cell vent. The battery module also includes a reinforcement frame including a plurality of reinforcement frame connection vents in fluid communication with the battery cell vents and a reinforcement frame discharge vent in fluid communication with the reinforcement frame connection vents. A busbar module electrically connects the battery cell terminals.

A secondary battery includes an electrode assembly (100) including a first electrode, a separator, and a second electrode stacked sequentially, a first case (110) configured to accommodate a portion of the electrode assembly (100), a second case (120) configured to accommodate another portion of the electrode assembly (100), and a central structure (130) between the first case (110) and the second case (120).

A system and method for controlling electrode plate drying, and more particularly a system and method for performing laser-based electrode plate drying control, are described. The method of controlling electrode plate drying may include the steps of (a) receiving electrode plate drying degree information, and (b) determining a beam energy intensity profile according to an electrode plate drying degree monitoring result.

Roller cleaning device (40) comprising a cleaning part (41) configured to be provided in an apparatus (20) for manufacturing a secondary battery that includes one or more rollers (30) configured to contact a substrate (24) coated with slurry (24a) for a secondary battery and a support structure (50) supporting the rollers (30), the cleaning part (41) being operatively associated with one of the rollers (30) and configured to remove contaminants (z) from a surface of the roller (30) by contacting the roller; a driving part configured to drive the cleaning part; and a controller (53) configured to control the driving part. Apparatus (20) for manufacturing a secondary battery comprising the roller cleaning device (40) and associated cleaning method.

An apparatus for manufacturing a secondary battery includes a cap transporter including a cap seater, which is configured to receive a cap at a cap supplying position and on which the cap is to be seated, and is rotatable about a cap turntable axis to transport the cap to a cap welding position, a can transporter configured to move a can connected to a tab toward the cap located at the cap welding position, a can holder configured to move between a can separation position spaced apart from the can and a can pressing position at which the can holder comes into contact with the can and the can is pressed in a direction in which the cap transporter is arranged, a tab pusher, and a laser generator configured to emit a laser to the tab to weld the cap and the tab.

A protection circuit module includes a substrate electrically connected to a battery cell, components in implementation regions on the substrate, a first insulating layer in regions other than the implementation regions on the substrate, a second insulating layer on the first insulating layer and separated from the components, and a coating layer on the first insulating layer and surrounding the components.

A battery management system includes a battery monitoring unit configured to monitor a temperature and voltage of a battery and determine whether an abnormality occurs in the battery, a fire monitoring unit configured to detect an occurrence of a fire, and a control unit configured to control a cooling temperature of a chiller according to results of monitoring by the battery monitoring unit and the fire monitoring unit. The chiller control unit is configured to reduce the cooling temperature of the chiller when the battery monitoring unit determines that the abnormality occurs. The chiller control unit is also configured such that, when the fire monitoring unit detects a fire, the chiller control unit operates the chiller at a lower cooling temperature than the reduced cooling temperature used when the abnormality occurs.

An iron removal device includes a housing having a washing liquid inlet and a washing liquid outlet, a head coupled to the housing and configured to spray a washing liquid onto a screen stack in a washing liquid flow path leading from the washing liquid inlet to the washing liquid outlet within the housing, a washing liquid inlet pipe coupled to the head and configured to supply the washing liquid to the head, and a washing liquid outlet pipe coupled to the housing and configured to discharge the washing liquid out from the housing. The head includes a body accommodating the washing liquid, and spray parts separately on a washing liquid spray surface of the body facing the screen stack and configured to spray the washing liquid onto the screen stack.

An energy storage system includes a plurality of battery modules, a fire-extinguishing tank accommodating a fire-extinguishing agent, and a pipe part connecting the plurality of battery modules to the fire-extinguishing tank, wherein each of the plurality of battery modules includes a plurality of battery cells and a fire-extinguishing tube which extends into the interior of each of the plurality of battery modules along an arrangement of the plurality of battery cells, wherein the pipe part includes: a distribution pipe connected to the fire-extinguishing tube in the battery modules; and an extension pipe including connecting portions connected to the distribution pipe, and a curved portion disposed between the connecting portions.

An electrode assembly inspection device includes a communication unit configured to collect process data, and a processor configured to modify at least one related factor based on the process data and to model a prediction model that predicts a quality of an electrode assembly based on the modified at least one related factor.