LG Energy Solution Patente

Disclosed are a leakage detection device including a moisture detection unit to which an absorption member is coupled, a fixing support portion configured to fix the moisture detection unit to a battery pack, and an extension portion configured to fix the moisture detection unit to the fixing support portion, wherein a lower end of the absorption member extends at least to a lower end of the fixing support portion, and a battery pack including the same. It is possible to rapidly detect even a small amount of coolant leakage.

According to exemplary embodiments, a secondary battery manufacturing system is provided. The system includes secondary battery manufacturing equipment; a particle sensing device installed in the secondary battery manufacturing equipment and configured to collect particle data representing size and density of particles generated from the secondary battery manufacturing equipment; a particle collecting device installed in the secondary battery manufacturing equipment and configured to collect the particles; and a particle analyzer configured to collect composition data of the particles collected by the particle collecting device.

Disclosed are a cell charging and discharging apparatus provided with distance-adjustable cell grippers and a cell charging and discharging method using the same, and more particularly a cell charging and discharging apparatus including cell grippers located spaced apart from each other by a certain distance, a distance adjustment unit configured to adjust the distance between the cell grippers, and a driving unit connected to the distance adjustment unit, the driving unit being configured to drive the distance adjustment unit, wherein the cell gripper includes a body portion, a piezoelectric element located on each of both sides of the body portion, and a connection portion configured to connect the body portion and the piezoelectric element to each other, the length of the connection portion being adjustable, and a cell charging and discharging method using the same.

A pouch-type battery cell pressing member includes: a first pressing part including a first base plate, a first elastic member having a first end coupled to the first base plate, and a plurality of first contact portions coupled to a second end of the first elastic member, and a second pressing part including a second base plate, a second elastic portion having a first end coupled to the second base plate, and a plurality of second contact portions coupled to a second end of the second elastic portion. The plurality of first contact portions and the plurality of second contact portions define a first region where pressing surfaces are substantially parallel to the first base plate and the second base plate, and a second region where pressing surfaces are formed in an inclined shape with respect to the first base plate and the second base plate.

A shim plate according to an exemplary embodiment of the present disclosure includes: a first side end portion in the shape of a plate provided on one side; a second side end portion in the shape of a plate provided on the other side; and at least one rib provided between the first side end portion and the second side end portion, arranged parallel to the first side end portion and the second side end portion, and configured to have at least one step in a longitudinal direction.

The present disclosure relates to a forming apparatus for shaping first and second foil tabs formed at two ends of a cylindrical electrode assembly, the forming apparatus including a rail unit configured to move the electrode assembly in a direction, and a guide unit disposed on the rail unit and configured to place the electrode assembly in position, the guide unit including a first plate facing the first foil tab and moving in a direction toward or away from the first foil tab, and a first guide portion disposed on the first plate and configured to bend the first foil tab.

According to one embodiment of the present invention, a tape reel supply device for supplying an insulating tape to a conveying unit comprises a supply unit, in which a plurality of tape reel cassette units, each wound with an insulating tape, are disposed on a rotatable supply body at intervals, and the supply unit replaces and supplies the insulating tape to the conveying unit.A tape reel supply device and an insulating tape supply method according to one embodiment of the present invention have the effect of effectively replacing and supplying an insulating tape wound on a tape reel cassette unit.

A busbar assembly may include a frame configured to cover one side or both sides of a battery cell stack, the battery cell stack including battery cells, in which electrode leads of the battery cells are stacked on one side of the frame, and some of the stacked electrode leads are positive electrode leads and others are negative electrode leads.

The present invention relates to a pouch film laminate including a substrate layer, a gas barrier layer, and a sealant layer laminated in sequence, wherein the sealant layer includes a first sealant layer disposed adjacent to the gas barrier layer, and a second sealant layer laminated on the first sealant layer, the second sealant layer includes a polypropylene (PP)-polydimethylsiloxane (PDMS) copolymer, and the polypropylene (PP)-polydimethylsiloxane (PDMS) copolymer includes polydimethylsiloxane (PDMS) in an amount of 1 wt% to 12 wt%.

The present invention relates to a method of recovering lithium. More particularly, the present invention relates to a method of recovering lithium, including a step of obtaining a leachate, in which a lithium component is dissolved, from cathode material powder, and a step of purifying a lithium component by introducing the leachate into a flow capacitive deionization apparatus. According to the method of the present invention, by easily removing impurities from a leachate, in which a lithium component is dissolved from cathode material powder, through an electrochemical adsorption and desorption process, high-purity lithium may be recovered, and an eco-friendly benefit may be obtained by reducing an amount of wastewater generated. In addition, by simultaneously performing the purification and filtration of lithium, the process may be simpler than a conventional process, a continuous process is possible, and processing cost and energy may be reduced.

A battery module according to one embodiment of the present invention includes a cell assembly including a plurality of battery cells, a lower housing having an internal space to accommodate the cell assembly, a coolant accommodated in the lower housing, an upper housing mounted on a top of the lower housing and including at least one venting hole, and a sealing bracket configured to seal between an outer surface of the cell assembly and an inner surface of the lower housing.

According to exemplary embodiments, a lifting jig is provided. The lifting jig includes a plate and a plurality of fixing pads coupled to the plate. The plate includes holes for coupling to side beams of a battery cell assembly. The battery cell assembly includes the side beams and a plurality of battery cells interposed between the side beams.

A battery test equipment leak inspection device according to a preferred exemplary embodiment of the present disclosure includes: a main tube detachably connected to an inspection target including a battery heating module or an inspection target including a flow meter connected to a battery heating module, and configured to communicate with an interior of the inspection target; a gas supply unit connected to the main tube and configured to supply a gas for leak inspection into the inspection target through the main tube; and a pressure measurement unit connected to the main tube and configured to measure a change in gas pressure in the main tube and the inspection target. According to the battery test equipment leak inspection device of the present disclosure, it is possible to secure test reliability by inspecting in advance whether there is a gas leak in battery test equipment before evaluating the thermal stability of a battery using the battery test equipment, and replacing or repairing the entire or part of the equipment when a leak is confirmed.

The present invention relates to a positive electrode comprising a current collector, and a positive electrode active material layer disposed on the current collector, wherein the positive electrode active material layer comprises a positive electrode active material, a conductive agent, and a binder, the positive electrode active material comprises a lithium iron phosphate-based compound, the conductive agent comprises carbon black, the conductive agent has a BET specific surface area of 200 m²/g to 400 m²/g, and a value of R₁ represented by Equation 1 below is 180 to 500, and a lithium secondary battery comprising the same. R₁ = {[Average particle diameter (D₅₀) value of positive electrode active material] x [BET specific surface area value of conductive agent]} / [Average particle diameter (D₅₀) value of conductive agent]²In Equation 1, the average particle diameter (D₅₀) value (µm) of positive electrode active material, the BET specific surface area value (m²/g) of conductive agent, and the average particle diameter (D₅₀) value (µm) of conductive agent are dimensionless numbers with the units omitted.

A battery management device according to an embodiment disclosed herein may include a memory configured to store at least one instruction and at least one processor configured to execute the at least one instruction, and the at least one processor may identify a first reset count corresponding to a first operating state of the battery management device and diagnose a state of the battery management device based on an operating time of one or more software programs executed after the first operating state when the first reset count is greater than a reference reset count.

A battery diagnosis device according to an embodiment of the present invention may comprise: at least one processor; and memory that stores at least one command that is executed through the at least one processor. Here, the at least one command may comprise: a command for acquiring state data including a state value of each of factors for a plurality of batteries; a command for deriving regression lines indicating relationships between the factors by using the state data; a command for calculating coordinates corresponding to the state values of the factors and distances between the regression lines; and a command for inputting diagnostic data including the distances into a pre-trained diagnostic model, and determining an abnormal battery among the batteries by using a diagnostic result output by the diagnostic model.

A signal output device according to an embodiment of the present invention may comprise: a contact connected to an external device; a control unit for outputting a signal to be transmitted to the external device; and a signal transmission circuit for transmitting the signal output from the control unit to the contact. Here, the control unit may control the signal transmission circuit to allow the contact to operate as either a dry contact or a wet contact.

The present invention relates to a management device for detecting poor busbar connection and defective inter-cell welding of a battery pack using electrochemical impedance spectroscopy (EIS) technology. The device of the present invention includes a measurement current generation unit that applies a set AC to a battery pack, a voltage measurement unit that measures a voltage generated across both ends of each battery cell or a busbar by the current, an impedance calculation unit that calculates an impedance using the measured current and voltage values, and a data output unit that generates a Nyquist or Bode plot based on the calculated impedance and outputs an impedance change.

A battery management device according to an embodiment of this document includes a memory configured to store one or more instructions and a processor configured to execute the one or more instructions, and the processor is configured to acquire a reference voltage for determining initial driving batteries among a plurality of batteries based on factors acquired from a plurality of cells included in each of the plurality of batteries, and manage a connection state of each of the plurality of batteries based on the reference voltage.

The present invention relates to a method for manufacturing an electrode for a lithium secondary battery, the method including the step of laminating a transfer laminate including a lithium metal layer and a carrier film on one surface of an electrode active material layer provided on at least one surface of an electrode current collector layer, wherein at least one surface of the carrier film has a maximum height roughness (Sz) in a vertical direction of 17 µm or less and an arithmetic mean roughness (Sa) of 3 µm or less, and to an electrode for a lithium secondary battery manufactured thereby, a lithium secondary battery including the same, and a transfer laminate for pre-lithiation.

A device according to an embodiment disclosed in this document may include an interface configured to acquire target voltage data for a battery; and one or more processors configured to output battery manufacturer estimation information corresponding to the battery based on at least a portion of the target voltage data.

The present invention relates to a positive electrode comprising a current collector, and a positive electrode active material layer disposed on the current collector, wherein the positive electrode active material layer comprises a positive electrode active material, a conductive material, and a binder, the positive electrode active material comprises a lithium iron phosphate-based compound, the conductive material comprises carbon black, and a value of R represented by Equation 1 below is 500 to 1300, and a lithium secondary battery comprising the same. R = {[Oxygen content value of conductive material] x [BET specific surface area value of conductive material]} / [Average particle diameter (D<50>) value of positive electrode active material] <img class="EMIRef" id="3b1456be-ebcd-48e2-93a8-3999c67ad481-ia01" /> In Equation 1, the oxygen content value (at%) of conductive material, the BET specific surface area value (m<2>/g) of conductive material, and the average particle diameter (D<50>) value (µm) of positive electrode active material are unitless numbers with the units omitted.

A battery module according to an exemplary embodiment of the present disclosure includes battery cells, and a module case configured to form an accommodation space for accommodating the battery cells therein and including at least one venting channel provided at an upper portion and configured to guide external discharge of venting gas. According to the battery module of the present disclosure configured as described above, the upper portion of the module case is formed with the venting channel to guide the external discharge of venting gas and particles. Thereby, the back flame phenomenon in which high-temperature venting gas and particles enter adjacent venting holes can be effectively prevented.

A battery module according to some embodiments may include:a module frame comprising first and second cell slots isolated in a first direction and a slot gap positioned between the first and second cell slots;a first battery cell within the first cell slot; anda second battery cell within the second cell slot.Accordingly, some embodiments can prevent a thermal runaway event from occurring up to other adjacent battery cells even if a thermal runaway event occurs in some battery cells. Consequently, even if a thermal runaway event occurs in some battery cells, it is possible to prevent a thermal runaway event from occurring in the entire battery module or the entire battery pack.

A busbar frame assembly according to an embodiment of the present disclosure comprises a busbar connected to electrode leads of a plurality of battery cells; and a welding plate where the busbar and a weld are formed, wherein the busbar comprises a plurality of protruding parts, wherein the welding plate comprises a fastening hole into which the protruding parts are inserted, and wherein the weld is located between the plurality of protruding parts.

The present disclosure relates to a secondary battery and a method for manufacturing a secondary battery, and more specifically, to a secondary battery that can be repeatedly charged and discharged and a method for manufacturing the same. A secondary battery according to an embodiment of the present disclosure may include an electrode assembly; an exterior material having an internal space accommodating the electrode assembly and first and second exterior material openings allowing the internal space to communicate with the outside; a first cap sealing the first exterior material opening; a second cap sealing the second exterior material opening; and a positive electrode lead and a negative electrode lead connected to the electrode assembly and at least partially exposed to the outside by penetrating the first cap. At this time, the first cap and the second cap may be coupled to the inner surface of the exterior material, and the bonding force between the first cap and the inner surface of the exterior material may be stronger than the bonding force between the second cap and the inner surface of the exterior material.

An electrode tab assembly of the present invention includes: an electrode tab; and a reinforcing member provided on a side portion of the electrode tab in a width direction to reinforce strength of the side portion of the electrode tab, thereby preventing the electrode tab from being deformed.

A battery manufacturing system and corresponding method, the manufacturing system comprising a cylindrical roller configured to apply roll pressure onto a battery cell while rolling over the battery cell; and a protrusion protruding from a lateral surface of the cylindrical roller in a radial direction of the cylindrical roller; characterized in that the manufacturing system further comprises an actuator configured to apply a controlled pressure to the protrusion in the radial direction.

A battery pack according to one embodiment of the present disclosure includes a cell module assembly including a battery cell stack in which a plurality of battery cells are stacked and each battery cell is erected in a vertical direction; a plate-shaped blocking members disposed between adjacent battery cells and erected in a vertical direction; a pack case configured so as to house the cell module assembly and opened at its upper surface; and a fire-fighting tank located above the cell module assembly and covering an upper surface of the pack case, wherein the blocking member includes a plurality of openings at its upper end, and an inside of the blocking member includes an empty space connected to the plurality of openings.

Disclosed is a battery pack, which includes a plurality of battery modules respectively having a pair of fixing portions provided at both longitudinal sides thereof; a tray on which the plurality of battery modules are placed; a pair of side covers configured to cover both widthwise sides of the tray and having a first fastening hole formed at a location corresponding to a coupling hole formed in the fixing portion; and a module fixing bar positioned at a widthwise center of the tray and shaped to extend across an upper surface of the tray along a longitudinal direction of the tray, the module fixing bar having a second fastening hole formed at a location corresponding to the coupling hole formed in the fixing portion.

An integrated isotope battery comprising at least one unit battery layer is disclosed. The unit battery layer includes: a substrate having a first major surface, an opposite second major surface, and a plurality of recesses formed in the first major surface; a pattern disposed in the plurality of recesses, wherein the pattern has a conductive type opposite to a conductive type of the substrate, a p-n junction being formed between the substrate and the pattern; and a radioactive radiation source pattern disposed in the plurality of recesses, on the pattern, wherein the radioactive radiation source pattern is configured to emit radioactive radiation to an interface between the substrate and the pattern. The radioactive radiation source pattern has at least a portion with a tapered shape, gradually becoming thinner towards the second major surface.

The present invention provides an electrode coating die, including: a slurry discharge part configured to discharge an active material slurry onto a current collector; and a dam liquid discharge part provided on at least one side of the slurry discharge part and configured to discharge a dam liquid to form a dam layer covering at least a portion of an inclined surface portion provided at an edge portion of an active material slurry layer coated with an active material slurry discharged from the slurry discharge part, and an electrode coating apparatus including the same. Further, the present invention provides a method of manufacturing an electrode, the method including: a preparing operation of preparing an active material slurry including an active material, a conductive material, and a solvent; and a coating operation of applying the active material slurry on a current collector, in which the coating operation includes forming an active material layer by discharging the active material slurry onto the current collector and discharging a dam liquid so as to form a dam layer covering at least a portion of an inclined surface portion provided on an edge portion of at least one side of an active material slurry layer coated on the current collector at the same time.

Disclosed is a battery module with an improved structure so that gas or flame generated inside the battery module may be discharged stably. The battery module includes a cell assembly having at least one battery cell; a module case configured to accommodate the cell assembly in an inner space thereof and have a venting hole formed therein to discharge a venting gas generated from the cell assembly; and a venting unit provided at an outer side of the module case and configured to include an outer housing and an inner housing made of different materials, the venting unit being configured such that the venting gas discharged from the venting hole is introduced therein to flow along a surface of the inner housing and is discharged to the outside.

An electrode assembly includes a stack and a second separator. The stack includes first and second electrodes and a first separator folded in a zigzag configuration and including spacer sections and respective side sections between the spacer sections. The first and the second electrodes are alternately disposed between first separator spacer sections The second separator extends along an upper surface, a lower surface, and at least one pair of opposing side surfaces of the stack. The side sections of the first separator define portions of the side surfaces of the stack on which the first electrode and the second electrode are not disposed. The second separator is bonded to at least one of the side sections.

The present disclosure provides a positive electrode slurry composition including a positive electrode active material, a positive electrode conductive material, and a positive electrode binder, wherein the positive electrode binder includes an aramid-based polyamide polymer including a repeating unit of Formula 1 and a repeating unit of Formula 2, and wherein the molar fraction of the repeating unit of Formula 2 is 11 to 30 mol% based on the number of moles of the total repeating units of the aramid-based polyamide polymer. [Formula 1] -[NH-A<1>-NHCO-A<2>-CO]- In Formula 1, A<1> and A<2> are each independently a divalent organic group having an aromatic ring. [Formula 2] -[NH-B<1>-NHCO-B<2>-CO]- In Formula 2, B<1> and B<2> are each independently a divalent aliphatic organic group.

The present disclosure provides a positive electrode slurry composition comprising a positive electrode active material, a conductive material, and a binder, wherein the binder includes an aramid-based polyamide polymer including a repeating unit of Formula 1 and hydrogenated nitrile butadiene rubber (H-NBR), wherein the molar fraction of the repeating unit of Formula 1 is 95 to 100 mol% based on the number of moles of the total repeating units of the aramid-based polyamide polymer. [Formula 1] -[NH-A₁-NHCO-A₂-CO]-In Formula 1, A₁ and A₂ are each independently a divalent organic group having an aromatic ring.

A fire prevention apparatus for a vehicle according to the present disclosure includes a tubular structure configured to deliver the fire extinguishing agent to the battery pack; and an accommodation unit provided in the vehicle to accommodate the tubular structure, and the tubular structure is configured such that at least a portion thereof is drawn to the outside of the vehicle.

A fire prevention apparatus for a vehicle according to the present disclosure includes a tubular structure configured to deliver the fire extinguishing agent to the battery pack; an accommodation unit having an accommodation space for accommodating the tubular structure and an opening communicating with the accommodation space; and an opening device configured to open or close the opening, and the opening device is configured to automatically open the opening when a predetermined control signal is received or a temperature of the battery pack exceeds a predetermined threshold value while the opening is closed.

The present disclosure provides a positive electrode slurry composition including a positive electrode active material, a conductive material, and a binder, wherein the binder includes an aramid-based polyamide polymer including a repeating unit of Formula 2 and styrene butadiene rubber (SBR), wherein the molar fraction of the repeating unit of Formula 2 is 1 to 10 mol% based on the number of moles of the total repeating units of the aramid-based polyamide polymer. [Formula 2] -[NH-B<1>-NHCO-B<2>-CO]- In Formula 2, B<1> and B<2> are each independently a divalent aliphatic organic group.

The present disclosure is directed to providing a can lid in which a means of relieving high pressure is provided. The present disclosure is also directed to providing a battery cell including such a can lid. A can lid according to the present disclosure includes a vent notch portion on the opposite surface of a surface facing an electrode assembly. The can lid may include an edge portion formed on an edge to be coupled to a cell housing; and an electrode coupling portion coupled to the electrode assembly and recessedly formed, wherein the vent notch portion may be formed between the electrode coupling portion and the edge portion.