LG Energy Solution Patente

An apparatus for manufacturing an electrode assembly by stacking and folding includes a transfer unit conf igued to pick a respective one of a plurality of unit electrode cells and sequentially arrange on a longitudinal separator. The apparatus further includes a folding unit conf igured to fold the separatorhaving the plurality of unit electrode cells sequentially arranged thereon, along a longitudinal direction of the separator, thereby forming a folded stack cell, and at least one sealer conf igured for being applied to a side of the folded stack cell at which folded parts of the separator are exposed, wherein the sealer is conf igured to compress the exposed folded parts of the separator by exerting pressure on opposite sides thereof.

The present disclosure relates to a multilayer negative electrode comprising a negative electrode current collector configured to transfer electrons between an outer lead and a negative electrode active material, a first negative electrode mixture layer formed on one surface or both surfaces of the current collector and containing natural graphite as a negative electrode active material and a second negative electrode mixture layer formed on the first negative electrode mixture layer and containing artificial graphite as a negative electrode active material, and a lithium secondary battery including the same.

Disclosed is a battery diagnosing apparatus for a cell group, which includes a plurality of battery cells connected in series and is mounted in an electric vehicle, and the battery diagnosing apparatus includes a voltage sensing circuit configured to periodically generate a voltage signal representing a cell voltage of each battery cell while the electric vehicle is operating; and a control circuit configured to accumulatively store the cell voltage determined from the voltage signal in a memory unit and generate time series data representing the change over time in the cell voltage of each battery cell by using the accumulated cell voltage of each battery cell. The control circuit is configured to (i) determine a first average cell voltage and a second average cell voltage of each battery cell based on the time series data [where the first average cell voltage is a short-term movement average, and the second average cell voltage is a long-term movement average], and (ii) detect a voltage abnormality of each battery cell based on the difference between the first average cell voltage and the second average cell voltage.

Disclosed is an effective charging and discharging control technology capable of improving the lifespan of a battery. The battery control apparatus includes a memory unit configured to store a criterion voltage for a battery; a measuring unit configured to measure a voltage of the battery during a charging or discharging process of the battery; and a processor configured to compare the measured voltage and the criterion voltage during the charging or discharging process of the battery and change a charging C-rate or a discharging C-rate for the battery when the measured voltage corresponds to the criterion voltage.

A cell assembly according to one embodiment of the present invention is characterized by including: a battery cell stack in which a plurality of battery cells are stacked; and a support frame including a bottom frame disposed on a lower side of the battery cell stack and side frames disposed on each side of the bottom frame.The cell assembly and battery pack according to one embodiment of the present invention have the effect of smoothly discharging gas during thermal runaway while simultaneously securing rigidity against vertical shock or vibration.

The present disclosure relates to a manufacturing method of a pouch for a secondary battery, which includes a step of preparing a pouch fabric in which a first pocket area, a second pocket area disposed to be spaced apart from the first pocket area, and a gas pocket area disposed between the first pocket area and the second pocket area are defined; and a step of cutting the pouch fabric along a cutting line passing through the gas pocket area, wherein when the pouch fabric is cut along the cutting line, the gas pocket area is divided into a first divided gas pocket area connected to the first pocket area and a second divided gas pocket area connected to the second pocket area, and wherein the cutting line is defined in a left-right asymmetrical manner based on a center line passing through the center of the gas pocket area, thereby obtaining the advantageous effect of reducing the amount of pouch fabric used and lowering costs.

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.

A battery pack according to some embodiments includes:a pack housing including a base plate and a side wall;a venting device located on the side wall;a battery cell assembly on the base plate;first and second separation walls on the base plate, wherein the first and second separation walls are spaced apart from each other with the battery cell assembly therebetween, and the first separation wall is closer to the venting device than the second separation wall; anda pack lid covering the battery cell assembly and the first and second separation walls, whereinthe first separation wall includes one or more first vent holes,the second separation wall includes one or more second vent holes, andthe first and second separation walls may be configured to guide the flow of gas inside the battery pack toward the venting device.Accordingly, thermal propagation inside the battery pack can be delayed or prevented.

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.

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.

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 three or more odd-numbered units, is coupled to each other.

A battery cell according to an aspect of the present disclosure includes a battery case, an electrode assembly accommodated in the battery case, and an insulator interposed between the electrode assembly and one bottom surface of the battery case, the insulator having a shape in which the area in contact with the electrode assembly and the bottom surface of the battery case is smaller than the area in contact with the electrode assembly.

The inventive concept of the present disclosure provides a learning system for secondary battery manufacturing, including: a simulation device configured to construct a virtual factory in which a plurality of manufacturing equipment configured to perform secondary battery manufacturing processes are disposed, and to output the virtual factory to a display device; and an input device configured to transmit a user input signal generated based on an input of a user to the simulation device, wherein the simulation device is configured to change a position of the virtual factory displayed on the display device in accordance with the user input signal, and to output, to the display device, content associated with a manufacturing equipment selected by the user input signal from among the plurality of manufacturing equipment.

A battery pack according to an embodiment of the disclosure includes a battery cell assembly and a pack case accommodating the battery cell assembly. The pack case is made by coupling a plurality of parts with a cooling flow path formed inside and includes a bottom cover facing a lower surface of the battery cell assembly. (Representative figure: FIG. 4)

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.

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 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.

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 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

A vehicle fire alarm method, a vehicle dashcam for performing the method, and a storage medium for storing a program to execute the method provides a vehicle fire alarm to a subject vehicle and surrounding vehicles when a fire is detected in the subject vehicle or a surrounding vehicle, thereby inducing the vehicles to rapidly move and preventing the spread of fire.

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.

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.

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.

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.

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.

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 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.

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 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.

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.

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.

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.

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.

A battery diagnosis apparatus according to an embodiment of this document includes a memory configured to store at least one instruction, and at least one processor configured to execute the at least one instruction. The at least one processor is configured to identify a first temperature that is a temperature related to a battery cell at a first state of charge (SOC), identify a second temperature related to the battery cell at a second SOC different from the first SOC, and diagnose a state of the battery cell on the basis of the first temperature and the second temperature.

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.

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.