LG Energy Solution Patente

Disclosed are a battery pack including a plurality of cylindrical battery cells, a metal plate configured to electrically connect the plurality of cylindrical battery cells to each other, a monopole antenna attached to the plurality of cylindrical battery cells, and an antenna module connected to the monopole antenna, and a battery pack inspection apparatus for inspecting the same.

Disclosed are a top cap welding apparatus for cylindrical battery cells, the top cap welding apparatus including a transfer unit configured to transfer a cylindrical battery case in which an electrode assembly having an outwardly exposed electrode tab is received, a pressing unit located in front of the battery case, the pressing unit being configured to press the battery case, a support unit located at the rear of the battery case, the support unit being configured to support the battery case, a top cap holder configured to locate a top cap at the rear of the electrode tab, a top cap support unit configured to support the rear of the top cap, and a welding unit configured to weld the electrode tab and the top cap to each other, wherein the welding unit includes a welding mask configured to bring the electrode tab into tight contact with the top cap and a debris removal unit configured to remove debris generated during welding by injecting gas and/or suctioning the debris, and a top cap welding method for cylindrical battery cells using the same.

A battery assembly according to the present invention comprises: a busbar capable of conducting electricity; a busbar frame configured to support the busbar; an end plate configured to cover the busbar frame; a substrate including a substrate body and a substrate bending portion that is bent between the end plate and the busbar frame to contact the busbar from the substrate body; and a fuse located on the substrate bending portion to interrupt electricity flowing through the substrate, wherein the fuse faces the end plate, and the end plate includes a spaced portion formed at a position corresponding to the fuse and spaced apart from the fuse.

Disclosed are a top cap welding apparatus for cylindrical battery cells, the top cap welding apparatus including a transfer unit configured to transfer a cylindrical battery case in which an electrode assembly having an outwardly exposed electrode tab is received, a pressing unit located in front of the battery case, the pressing unit being configured to press the battery case, a support unit located at the rear of the battery case, the support unit being configured to support the battery case, a top cap holder configured to locate a top cap at the rear of the electrode tab, a top cap support unit configured to support the rear of the top cap, and a welding unit configured to weld the electrode tab and the top cap to each other, wherein the welding unit includes a temperature adjustment unit configured to control the temperature of a welding mask configured to bring the electrode tab into tight contact with the top cap such that the temperature does not rise to a predetermined temperature or higher, and a top cap welding method for cylindrical battery cells using the same.

According to exemplary embodiments, a battery pack is provided. The battery pack may include: a base plate; a battery cell assembly on the base plate, wherein the battery cell assembly includes a cell stack including battery cells stacked in a first direction, and an end plate on a side surface of the cell stack in the first direction; and a cross beam on the base plate and extending in a second direction perpendicular to the first direction. The end plate may include a plurality of first pins on a surface facing the cross beam, and first spacers extending from each of the first pins in a third direction perpendicular to each of the first and second directions. The cross beam may include a plurality of first slots penetrating an outer wall facing the end plate, and first recesses extending from each of the first slots in the third direction.

According to exemplary embodiments, a battery pack is provided. The battery pack may include: a pack housing including a bottom plate, side walls, and a lid plate; a plurality of battery cell assemblies on the bottom plate; and a first fire-resistant sheet between the plurality of battery cell assemblies and the lid plate. The first fire-resistant sheet may include a plurality of overlapping parts that are folded and overlapped.

A battery module according to an embodiment of the present disclosure may include: pouch cells arranged in a first direction, each of the pouch cells including an electrode lead protruding in a second direction perpendicular to the first direction; a module frame configured to accommodate the pouch cells and open in the second direction, the module frame including a top plate positioned above the pouch cells; a vent suppression structure between the pouch cells and the top plate; and a first end plate coupled to the module frame in the second direction and including first vent holes.

Die coater system configured for coating a foil with an active material, comprises a die block assembly with at least one discharge port for dispensing an active material slurry onto the foil, wherein the discharge port defines a discharge direction and extends in a lateral direction, wherein the die coater system further includes at least one adjustment device coupled to a back side of the die block assembly opposite to the discharge port, wherein the adjustment device includes an actor configured to urge at least a section of the die block assembly forwards or backwards in the discharge direction.

Provided are a battery module configured to ensure structural stability even when a thermal event occurs, a battery pack, and a vehicle including the battery pack. A battery module includes a cell assembly including a plurality of battery cells, and a compression pad assembly located between the plurality of battery cells, the compression pad assembly including a heat blocking unit in which at least one hollow portion is formed.

A battery module according to an embodiment of the present invention includes: a battery cell stack in which a plurality of battery cells are stacked in one direction; and a module frame accommodating the battery cell stack and having an inner surface and an outer surface, wherein at least one venting part penetrating the inner surface and the outer surface is formed on one surface of the module frame, and a cover layer including a barrier layer and a refractory layer is positioned between one surface of the module frame where the venting part is formed and the battery cell stack.

A secondary battery according to the present disclosure is configured to bend an electrode tab extending from an electrode body of an electrode, the electrode tab being provided in plurality, and includes a first roller configured to be located one side of the electrode and be rotated and moved and a second roller configured to be located at the opposite side of the one side of the electrode and be rotated and moved, wherein the first roller includes a first roller body configured to be in contact with the electrode body and a first pressing portion extending in a radial direction of the first roller body to press the electrode tab, wherein the second roller includes a second roller body corresponding to the first roller body and a second pressing portion corresponding to the first pressing portion, and wherein the first pressing portion and the second pressing portion are configured to alternately bend the plurality of electrode tabs in different directions.

An electrode assembly according to the present disclosure includes an electrode including an electrode body, a first electrode tab extending from the electrode body, and a second electrode tab extending from the same side as a side of the electrode body, from which the first electrode tab extends, the electrode being provided in plurality to be stacked; and an electrode lead electrically coupled to the electrode tabs, wherein the first electrode tabs and the second electrode tabs of the plurality of electrodes are bent and stacked in different directions, to form a first electrode tab stack and a second electrode tab stack, respectively, wherein the electrode lead includes a first electrode lead provided to be in contact with the first electrode tab stack and the second electrode tab stack; and a second electrode lead coupled to the first electrode lead, and wherein the second electrode lead includes a facing portion facing the first electrode lead; and an extension portion extending from the facing portion in a direction distant from the electrode.

A battery module according to an embodiment of the present invention includes a battery cell stack in which a plurality of battery cells are stacked, a busbar frame formed on a front surface and a rear surface of the battery cell stack, respectively, a connecting portion connected to an upper portion of the battery cell stack and configured to interconnect the busbar frames formed on the front surface and the rear surface, a first connector connected to both side end portions of the connecting portion, a second connector fixed to the busbar frame, and coupled to the first connector, and a dam portion disposed in a lower portion of the second connector and fixed to the busbar frame.

A battery assembly according to an embodiment of the present disclosure comprises a plurality of battery cells; a battery assembly frame that houses the battery cells and covers at least a part of the battery cells; a battery cell cover that covers one side of the battery cells; and a coolant that circulates inside the battery assembly frame, wherein a venting space is provided between the battery cell cover and one surface of the battery assembly frame.

A battery inspection apparatus according to the present disclosure includes an electromagnetic wave emitter device configured to emit electromagnetic waves toward a secondary battery, an electromagnetic wave detector device configured to detect the electromagnetic waves passing through the secondary battery, a rotational force transmitter configured to be coupled to the secondary battery, and a main movement device configured to apply pressure to the rotational force transmitter to rotate and move the secondary battery with respect to a battery movement direction while the electromagnetic wave detector device detects the electromagnetic waves passing through the secondary battery.

A method for predicting the rate capability of the secondary battery includes measuring each of a plurality of first capacities according to each of a plurality of first currents flowing in the secondary battery cell at each of some of a plurality of temperatures to acquire the plurality of first currents and the plurality of first capacities corresponding to each of the some of the plurality of temperatures, calculating each of a plurality of ion conductivities of the secondary battery cell at each of the plurality of temperatures, generating a rate capability curve representing the rate capability at the some of the temperatures by using the plurality of first currents and the plurality of first capacities, and pluralirty of ion conductivities, at each of the some of the temperatures, and predicting the rate capability data of the secondary battery cell at each of remaining temperatures, excluding the some of the temperatures, among the plurality of temperatures by using the rate capability curve.

In a battery management system, a first operational amplifier amplifies a difference between a voltage of a first terminal of a shunt resistor and a voltage of a second terminal of the shunt resistor based on a first gain to output a first output voltage, and a second operational amplifier amplifies the difference between the voltage of the first terminal of the shunt resistor and the voltage of the second terminal of the shunt resistor based on a second gain lower than the first gain to output a second output voltage. A comparison circuit compares the first output voltage with one or more reference voltages to output a selection signal, and a multiplexer selects an output voltage from among the first output voltage and the second output voltage based on the selection signal and outputs the selected output voltage as a measurement voltage corresponding to the current flowing through the shunt resistor.

Disclosed is a battery pack including one or more battery modules, a pack case body configured to receive the battery modules, a cover added so as to cover an open surface of the pack case body, and a sound absorbing material disposed on an outer surface of the cover, wherein a groove is formed in the outer surface of the cover, and at least a part of the sound absorbing material is inserted into the groove.

The technical spirit of the present disclosure provides a folding device including: a position detector that detects a position of a battery cell and determines a position correction value based on the detected position of the battery cell and a reference position; a folding part configured to fold an edge part of the battery cell; and a moving stage configured to move the folding part based on the position correction value provided by the position detector.

The present disclosure relates to an electrolyte injection device for injecting an electrolyte into a cylindrical battery case accommodating an electrode assembly. The device includes: a main body including an inlet formed at an upper part through which an electrolyte flows in, an outlet formed at a lower part through which the electrolyte is discharged, and an electrolyte flow path formed to communicate the inlet and the outlet; and a buffer cap coupled to the outlet, wherein the buffer cap includes an opening part formed to allow the electrolyte to pass therethrough and a buffer protrusion protruding toward the main body from a central position of the opening part to guide a discharge direction of the electrolyte.

The present disclosure relates to a secondary battery transfer device, and more specifically, to a secondary battery transfer device that may efficiently merge batteries together even if the number of lines through which secondary batteries are transferred is reduced, and may prevent an increase in the defect rate of batteries or delays in the transfer of batteries.

A secondary battery according to the present disclosure includes a battery case; an electrode including an electrode body and an electrode tab bent and extending from the electrode body, as an electrode accommodated in the battery case; a first electrode lead coupled to the electrode tab; a second electrode lead coupled to the first electrode lead at the opposite side of a side at which the first electrode lead faces the electrode tab, the second electrode tab extending to an outside of the battery case, and a coating member covering at least a portion of an end portion of the second electrode lead.

A battery module according to one embodiment of the present invention includes a plurality of battery cells, a module housing configured to accommodate the battery cells, and a resin portion provided in an upper region of an internal space of the module housing, configured to surround an outer circumferential surface of the plurality of battery cells, and configured to induce gas discharged from the upper portion of the battery cells to be discharged to the outside of the module housing.

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.

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.

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.

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.

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 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.

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.

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 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.

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 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)

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.

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.