LG Energy Solution Patente

A vehicle fire alarm method, a vehicle for performing the method, and a storage medium for storing a program to execute the method prevent the spread of a fire by providing a vehicle fire alarm from a fire vehicle to surrounding vehicles, thereby inducing vehicles to rapidly move

Disclosed is a height adjustment jig for cylindrical battery cells, the height adjustment jig including a support unit having a cylindrical mounting portion formed in the center thereof and a pressing unit configured to press a cylindrical battery cell received in the mounting portion, wherein the support unit includes a lower portion of the support unit having an inner diameter corresponding to the outer diameter of the cylindrical battery cell, an upper portion of the support unit having an inner diameter greater than the inner diameter of the lower portion of the support unit, and a stepped portion located between the lower portion of the support unit and the upper portion of the support unit, and the support unit is configured in a structure in which a plurality of units, such as four or more even-numbered units, is coupled to each other.

The present invention relates to a negative electrode, and a lithium secondary battery including the same. Specifically, the negative electrode is characterized in that it includes a current collector; and a negative electrode active material layer disposed on at least one surface of the current collector, wherein the negative electrode active material layer includes a carbon-based active material and a silicon-based active material, the carbon-based active material includes artificial graphite particles in a form of a secondary particle in which a plurality of primary particles are aggregated, the primary particles have a circularity of 0.60 to 0.78, and a ratio of an average particle diameter (D₅₀) of the silicon-based active material to an average particle diameter (D₅₀) of the artificial graphite particles in the form of a secondary particle is in a range of 0.4 to 1.

The present disclosure relates to an apparatus for inspecting a battery cell including a battery cell tray in which a plurality of battery cells are seated; and a sensing unit that simultaneously senses leak gas leaking from the plurality of battery cells individually for each battery cell, thereby obtaining the advantageous effect of simply and accurately testing whether a battery cell leaks.

A gas generation apparatus according to the present disclosure includes a detection case having a shape corresponding to a battery case of a secondary battery, the detection case having an opening to accommodate an electrolyte inside; and a detection cap having a passage hole through which an electrolyte gas generated from the electrolyte passes, the detection cap configured to cover the opening, wherein the passage hole has a diameter configured to allow the electrolyte gas generated by natural evaporation of the electrolyte to escape at a target concentration.

A battery module according to an embodiment of the present disclosure comprises: a module frame that accommodates a battery cell stack formed by stacking a plurality of battery cells, and has at least one surface opened; end plates that cover at least one opened surface of the module frame, respectively; an insulating plate that is disposed between the battery cell stack and the end plate, and surrounds a terminal busbar electrically connected to the battery cell stack; an inter-busbar electrically connected to the terminal busbar; and a fire-resistant cover part that surrounds a coupling portion between the inter-busbar and the terminal busbar and a part of the insulating plate.

The present invention relates to a battery beading device including: a fixing part inserted into an opening portion of a battery case and configured to fix the battery case; a beading part including a knife configured to form a bead by pressing an outer surface of the battery case, a main body configured to allow the knife to move forward or backward, and a connection portion configured to connect the knife and the main body; and a distance calculation unit configured to calculate a distance between at least one of the fixing part and the main body and the connection portion.

According to some embodiments, a battery management device includes an interface configured to acquire battery data of a battery having a composite negative electrode based on a first active material of a silicon series and a second active material of a graphite series, and a controller configured to calculate a first negative electrode loading of the first active material for the composite negative electrode and a second negative electrode loading of the second active material for the composite negative electrode based on the battery data, and diagnose a state of the composite negative electrode based on the first negative electrode loading and the second negative electrode loading.

According to exemplary embodiments, a method for manufacturing a secondary battery is provided. The manufacturing method may include: aligning a bottom pouch and a lid pouch, wherein each of the bottom pouch and the lid pouch includes a sealant layer, a protective layer, and a metal layer between the sealant layer and the protective layer, and the sealant layer of the bottom pouch is aligned to face the sealant layer of the lid pouch; and irradiating a laser beam to a first sealing part of the bottom pouch and the lid pouch. A wavelength of the laser beam may be in a range of 0.01 µm to 0.1 µm, or in a range of 0.8 µm to 1.0 µm.

A battery cell processing device includes a shape guide configured to be inserted into a cell case through an open upper portion of the cell case to guide formation of a beading portion and a beading knife introduced from the outside of the cell case toward a side of the cell case to form the beading portion. In the process in which a portion of the side of the cell case is introduced into the inside of the cell case by the beading knife, the shape guide guides the introduction of the cell case.

The present invention provides a jelly-roll type electrode assembly and a secondary battery including the same.

A battery module according to an embodiment of the present disclosure includes a battery cell assembly including a plurality of battery cells; a module housing having an internal space in which the at least one battery cell assembly is received; and a cooling unit disposed on a side of the battery cell assembly, wherein the cooling unit includes a first cooling plate and a second cooling plate spaced apart from the first cooling plate to form a coolant channel, the second cooling plate being positioned closer to the battery cell assembly than the first cooling plate, and at least part of the second cooling plate has a patterned portion.

The present invention relates to a lithium secondary battery which includes an electrode assembly in which a positive electrode plate, a negative electrode plate, and a separator interposed between the positive electrode plate and the negative electrode plate are wound in one direction, a battery can in which the electrode assembly is accommodated, and a sealing body which seals an open end of the battery can. The positive electrode plate includes positive electrode active material comprising single particles, quasi-single particles, or a combination thereof, and the positive electrode active material has D_min of 1.0 µm or more.

Provided is a battery assembly in which safety is effectively improved by suppressing propagation of a thermal event. A battery assembly according to an aspect includes a plurality of battery cells and a venting unit located between adjacent battery cells of the plurality of battery cells, including a venting passage through, and configured to discharge venting gas discharged from the plurality of battery cells.

Disclosed are a secondary battery measurement apparatus for measuring the width and thickness of a secondary battery and a secondary battery measurement method including the same, and more particularly a secondary battery measurement apparatus including a seating die configured to allow the secondary battery to be seated thereon, a pair of vertical frames located on an upper surface of the seating die so as to extend a predetermined length in a height direction while being spaced apart from each other by a predetermined distance, a horizontal frame extending a predetermined length, the horizontal frame being connected to each of the pair of vertical frames, a pair of width measurement sensors provided at side surfaces of the pair of vertical frames, respectively, and a thickness measurement sensor provided at the horizontal frame, and a secondary battery measurement method including the same.

A battery cell manufacturing apparatus according to an embodiment of the present disclosure comprises: a tray that includes a bottom plate and first and second rib sets located on both sides of the bottom plate, a cell loader that allows a plurality of battery cells to be loaded onto the bottom plate between the first rib set and the second rib set, and a plurality of elastic partition members located between a first rib and a second rib that are located so as to correspond to each other among a plurality of first ribs included in the first rib set and a plurality of second ribs included in the second rib set, wherein the elastic partition members press the battery cells under a state where they are loaded onto the bottom plate.

A forming apparatus according to an embodiment of the present disclosure may form an accommodation portion in a pouch film. The forming apparatus may include a die having a forming space and an additional space recessed from an upper surface of the die, the additional space located outside of the forming space and separated from the forming space; a stripper disposed upside of the die and configured to hold the pouch film; a punch configured to apply pressure to a target area of the pouch film to stretch it into the forming space; and a pressure applying unit in communication with the additional space and configured to apply pneumatic pressure to a peripheral area located around the target area of the pouch film through the additional space.

The present disclosure relates to a battery module and battery pack capable of preventing tab disconnection due to swelling of a battery cell, and a vehicle including the same. A battery module and battery pack including a cell assembly configured such that a plurality of battery cells including electrode leads are stacked, wherein the cell assembly includes a plurality of bent portions formed to be bent at predetermined radii on at least one of a plurality of electrode leads arranged along a stacking direction of the plurality of battery cells, and a vehicle including the same are provided.

A stacking system according to the present disclosure may include a stack mandrel configured to support at least a part of a folded portion of a separator so that the separator is folded between electrodes and to hold an end portion of the electrode, and a pressure applying device configured to apply pressure to an edge of the separator, wherein the edge of the separator includes an overlapping edge region that overlaps the stack mandrel and a non-overlapping edge region that does not overlap the stack mandrel, and wherein the pressure applying device is configured to apply pressure to the non-overlapping edge region.

A secondary battery cell according to the present invention comprises: a housing in which an electrode assembly and an electrolyte are accommodated; a top cap covering an opening formed on one side of the housing; and a safety vent located at a lower portion of the top cap and including a rupture portion that ruptures due to an increase in pressure inside the housing to exhaust gas; wherein a gas-generating material is contained inside the housing, and when the secondary battery cell is exposed to a temperature at or higher than a predetermined temperature, the gas-generating material reacts with components of the secondary battery cell to generate gas, thereby inducing early venting of the safety vent.

A welding jig inspection table for inspecting a welding jig used in manufacturing a cylindrical secondary battery includes a base plate horizontally disposed, the base plate having an upper surface configured to support the welding jig, a master electrode assembly having a first through-hole extending along a length direction at a radial center of the master electrode assembly, the master electrode assembly being transversely disposed in the welding jig, a master jig disposed on a first side of the base plate, the master jig having a third through-hole configured to be concentrically arranged with the first through-hole of the master electrode assembly, and a plurality of master pins having mutually different diameters, each master pin having a predetermined length, each master pin being configured to be inserted into the third through-hole of the master jig after passing through the first through-hole of the master electrode assembly.

An apparatus for diagnosing a battery according to an embodiment of the present disclosure comprises a data obtaining unit configured to obtain battery data including at least one of voltage, current, and temperature of the battery; and a processor configured to estimate a positive electrode active material loss rate of the battery based on the battery data by referring to a first profile provided for estimating a positive electrode active material loss related to cation mixing and a second profile provided for estimating a positive electrode active material loss related to particle cracking.

Disclosed are a pouch-shaped secondary battery degassing apparatus for removing gas from a pouch-shaped secondary battery including a first pocket portion configured to receive an electrode assembly and a second pocket portion configured to capture gas, the pouch-shaped secondary battery degassing apparatus including a first jig unit located at one surface of the second pocket portion, the first jig unit being configured to take in gas captured in the second pocket portion, and a second jig unit located at the other surface of the second pocket portion, the second jig unit being configured to take in the gas captured in the second pocket portion, wherein the first jig unit includes a first support plate, a first intake portion, and a first suction portion, and the first support plate is formed such that a region thereof where the first intake portion is located protrudes farther toward the one surface of the second pocket portion than a region thereof where the first suction portion is located, and a pouch-shaped secondary battery degassing method using the same.

A device for automatically coupling high-voltage (HV) and low-voltage (LV) connectors of a battery pack is provided. A connector coupling device for the battery pack includes a cylinder configured to move a connector toward a connector housing provided on the battery pack, an XY stage connected to the cylinder and configured to insert the connector into the connector housing, and a correction unit connected to the XY stage and configured to correct a position of the connector inserted into the connector housing.

Disclosed is a swelling test apparatus including a chamber having an internal space configured to accommodate a battery module, a power supply unit configured to charge and discharge the battery module, a measurement unit configured to measure changes in size of the battery module, a frame unit configured to allow the measurement unit to be mounted thereto, and a receiving unit configured to receive information about the size of the battery module measured by the measurement unit, wherein the measurement unit is disposed so as to face a side surface of the battery module disposed in the chamber.

The application relates to a sensing spacer (300), the sensing spacer (300) comprising a base element (310) and an electrically conducting element (320) arranged on the base element (310), the electrically conducting element (320) being configured to contact an electrode (212).

A system for managing battery allows cell monitoring controllers (CMCs) to be commonly used regardless of the number of battery cells included in a battery module by using the same type of cell monitoring controllers even when a battery is composed of battery modules having different numbers of battery cells.

A battery module according to some embodiments includes: a plurality of pouch cells arranged in a first direction, wherein each of the plurality of pouch cells includes an electrode lead protruding in a second direction perpendicular to the first direction; a module frame accommodating the plurality of pouch cells and open in the second direction; busbars electrically connected to the plurality of electrode leads of the plurality of pouch cells; and a busbar frame supporting the busbars and comprising a plurality of slits and a plurality of venting suppression parts, wherein each of the plurality of pouch cells includes a center part where an electrode assembly is located, a gas pocket part at an edge of the center part, and a sealing part at an edge of the gas pocket part, wherein the electrode lead of a corresponding one of the plurality of pouch cells passes through each of the plurality of slits, and the plurality of venting suppression parts may overlap with a portion of the sealing part of a corresponding one of the plurality of pouch cells in the first direction. Accordingly, a battery module according to some embodiments can suppress venting in the direction where the electrode lead is located and does not press the gas pocket of the pouch cell, thereby allowing the gas pocket of the pouch cell to perform its original function.

Disclosed are a voltage measurement unit including a distance adjustment portion constituted by two support shafts coupled so as to cross in an X-shape, bearings coupled to ends of the two support shafts, springs configured to restore by elastic force even if the crossing angle between the support shafts of the distance adjustment portion increases, and an electrode lead guide electrically connected to an electrode lead, a battery cell pressing jig including the same, and a charging and discharging apparatus including the battery cell pressing jig.

A method for inspecting surface roughness of a cylindrical battery using surface brightness include acquiring, by an inspector, an inspection image of the cylindrical battery to which illumination is applied, and acquiring, by a surface roughness inspector, surface roughness of an area corresponding to a terminal of the cylindrical battery using the inspection image. A device for inspecting surface roughness of a cylindrical battery using surface brightness is also provided.

The battery module includes a plurality of battery cells, a module frame that accommodates the plurality of battery cells, end plates positioned on a front side and a rear side of the plurality of battery cells, respectively, and a cover frame that covers a top surface and both side surfaces of the module frame. Two or more folding portions are formed on each edge of the cover frame.

An object of the present disclosure is to provide an Ultrasonic welding apparatus, ultrasonic welding method, a battery cell manufactured thereby, a battery pack, and an automobile including the same, which are capable of ensuring sufficient welding strength between a current collector plate and a terminal (rivet) of the battery cell. An ultrasonic welding device according to an embodiment of the present disclosure includes a welding horn having a plurality of protrusions at the end of a welding tip to press at least one member to be welded among a current collector plate and a rivet into a contact surface having a protruding shape. A plurality of protrusions are formed by protruding from the end face in a direction toward the member to be welded. Among the plurality of protrusions, the first protrusions arranged in the central area of the knurled portion are formed in a hexagonal cross-sectional shape, and the first protrusions have a transverse cross-sectional area that decreases as they move toward the member to be welded.

According to exemplary embodiments, a battery pack is provided. The battery pack may include a pack housing including a bottom portion; first and second battery cell assemblies on the bottom portion; and a flame cover on the first and second battery cell assemblies. Each of the first and second battery cell assemblies may include a plurality of battery cells arranged in a first direction parallel to the bottom portion. The flame cover may include a plate and a fire-resistant film on the plate. The plate may include a first plate portion overlapping the first battery cell assembly in the vertical direction and including a plurality of first venting holes; a second plate portion overlapping the second battery cell assembly in the vertical direction and including a plurality of second venting holes; and bridges connecting the first plate portion and the second plate portion. The fire-resistant film may overlap each of the plurality of first venting holes and the plurality of second venting holes in the vertical direction.

A battery module including a module case, the module case being configured to accommodate a battery cell stack, an end plate located on a side of the module case, an insulating cover located on an inner side of the end plate, and a plurality of fastening portions, each fastening portion including a fastening projection protruding from the insulating cover and a projection fastening hole located in the end plate, the fastening projection being inserted and fastened to the projection fastening hole, the fastening portions being configured to fasten the end plate and the insulating cover, wherein the fastening portions are arranged at positions asymmetrical to each other in a left-right direction.

An electric vehicle charging apparatus according to one embodiment of the present invention comprises one or more chargers that receive power through a power transfer apparatus. The power transfer apparatus comprises: one or more bus bar pairs including a positive electrode bus bar and a negative electrode bus bar; and a connection unit connectable to one or more power-requiring apparatuses, wherein the bus bar pairs are formed along at least a portion of an inner upper edge of the electric vehicle charging apparatus.

Disclosed is a battery assembly. The battery assembly includes a case providing a space therein and including a top cover; a plurality of battery cells located within the case; a perimeter wall located between the plurality of battery cells and the top cover and providing a space therein; a temperature sensor located within the perimeter wall; and a heat transfer member located between the plurality of battery cells and the top cover.

According to exemplary embodiments, an electrode assembly holder is provided. The electrode assembly holder may include: a sidewall portion having a hollow cylindrical shape, wherein the sidewall portion includes a first portion defining an accommodating space, a second portion defining a discharge space, and a third portion interposed between the first portion and the second portion; and a plurality of bridges connecting the third portion of the sidewall portion and intersecting each other at an intersection portion.

Disclosed is a battery pack including a plurality of battery modules, a pack housing including an outer frame and a lattice-shaped partition wall provided in the outer frame, the partition wall including a first partition wall and a second partition wall configured to form a plurality of receiving recesses configured to receive the battery modules, a BMS system electrically connected to the plurality of battery modules via a connector, and a guide unit configured to guide the connector so as to be located along an upper side of the first partition wall, wherein the guide unit is inserted into and coupled to a guide recess formed in an upper part of the first partition wall.

According to exemplary embodiments, a battery pack is provided. The battery pack may include a pack housing including a base plate, a center beam extending in a first direction and on the base plate, and a cross beam on the base plate crossing the center beam and extending in a second direction perpendicular to the first direction; a battery cell assembly on the base plate; and a first adhesive layer between the cross beam and the base plate.

A system of detecting the leak cell according to an embodiment of the present invention may include a gas sensor configured to generate a measurement value that changes according to a concentration of the leaked electrolyte by using a resistance that varies according to the electrolyte leaking from a battery cell, and a control unit configured to calculate a time change amount of the measurement value and Bollinger Bands of the time change amount, generate a leak cell determining graph for the battery cell by listing the time change amount, and an upper limit and a lower limit of the Bollinger Bands in chronological order, and determine whether a corresponding battery cell is the leak cell based on whether a first point where the time change amount breaks through and falls below the lower limit of the Bollinger Bands and a second point where the time change amount breaks through and rises above the upper limit of the Bollinger Bands are included in the leak cell determining graph.