LG Energy Solution Patente

The present disclosure relates to an electrode assembly including electrodes and separators, and an apparatus for manufacturing such an electrode assembly. An electrode assembly according to an embodiment of the present disclosure may include a first separator; a first electrode having one surface in contact with the first separator; a second separator having one surface in contact with the other surface of the first electrode; a second electrode having a different polarity from the first electrode and having one surface in contact with the other surface of the second separator; and a plurality of attachment tapes attached to the first separator, the first electrode, the second separator, and the second electrode to combine them together, wherein the first and second separators may have wider widths than the first and second electrodes, wherein widthwise edges of the first and second separators may include adhesive portions that are bonded to each other and non-adhesive portions that are not bonded to each other, and wherein the non-adhesive portions may not overlap the plurality of attachment tapes.

A heating assembly includes a base member, a heat generating member provided on one or both sides of the base member, and a heat transfer member covering the heat generating member and contacting a battery cell to transfer heat to the battery cell.

The present disclosure relates to a grip device. The grip device according to an aspect of the present disclosure is capable of picking up or placing a cylindrical secondary battery, comprising a gripper comprising a pad and a frame supporting the pad; and an actuator configured to move the gripper in one direction, wherein the pad comprises a pad part comprising a grip surface capable of contacting the outer circumferential part of the cylindrical secondary battery and a coupling part provided on one side of the pad part and coupled to the frame in a shape fitting manner.

The present disclosure relates to a welder for welding an electrode tab of a secondary battery, and the welder may include an anvil on which the electrode tab is mounted, and a horn configured to move from an opposite direction to the anvil with the electrode tab positioned therebetween to weld the electrode tab. The horn may include a body portion including a first contact surface that contacts the electrode tab, and an expansion portion detachably coupled to the body portion, the expansion portion including a second contact surface that extends from the first contact surface and contacts the electrode tab.

The present disclosure relates to a tape supply unit, an apparatus for manufacturing a pouch for a secondary battery using the same and a method for manufacturing a pouch for a secondary battery using the same, and more particularly, to a tape supply unit for simplifying the structure and manufacturing process and improving process efficiency and productivity, an apparatus for manufacturing a pouch for a secondary battery using the same and a method for manufacturing a pouch for a secondary battery using the same. The apparatus for manufacturing the pouch for the secondary battery according to the present disclosure is configured to manufacture the pouch for the secondary battery including a pouch body accommodating an electrode assembly and a sealing portion disposed at the pouch body, and includes a support unit configured to support the sealing portion at a side, and a tape supply unit configured to supply an adhesive tape to a target adhesive surface of the sealing portion, wherein the tape supply unit includes a supply roll configured to supply a tape feed including the adhesive tape and a release sheet to which the adhesive tape is attached, and a mover configured to apply pressure to the release sheet to maintain tension of the tape feed, and move toward the support unit to attach the adhesive tape to the target adhesive surface.

According to exemplary embodiments of the present disclosure, a battery module is provided. The battery module includes: a plurality of battery cells; a module housing accommodating the plurality of battery cells; a first fire-resistant layer wrapping the plurality of battery cells such that a lower surface of the plurality of battery cells is open, and having a plurality of vent holes at an upper portion; a thermal insulation pad disposed on the first fire-resistant layer and having a plurality of slots at positions corresponding to the plurality of vent holes; a second fire-resistant layer positioned on the thermal insulation pad and covering the plurality of slots; an upper plate having a plurality of openings at positions corresponding to the plurality of slots and disposed on the second fire-resistant layer; and a flame barrier cover having a plurality of other openings at positions corresponding to the plurality of openings and installed on the upper plate.

Disclosed are a pouch-shaped secondary battery pressing apparatus including a pressing plate configured to press a pouch-shaped secondary battery, a support plate located in front of the pressing plate, and a driving unit configured to drive the pressing plate forward and backward, wherein the pressing plate includes a first pressing plate configured to press a central part of the pouch-shaped secondary battery and a second pressing plate disposed on each of both sides of the first pressing plate, the second pressing plate being configured to press an edge of the pouch-shaped secondary battery, and a pouch-shaped secondary battery pressing method using the same.

A battery module of the present disclosure may include a first battery cell stack including a stack of a plurality of first battery cells; a second battery cell stack including a stack of a plurality of second battery cells, the first battery cell stack and the second battery cell stack being arranged along a direction; a lower frame accommodating the first battery cell stack and the second battery cell stack, the lower frame having an open top; and an upper frame covering the first battery cell stack and the second battery cell stack, the upper frame being connected to the lower frame. The upper frame may have a plurality of slits that penetrate the upper frame completely, and a portion of the upper frame adjacent to the plurality of slits may rupture in response to thermal energy being concentrated at or above a predetermined value.

According to exemplary embodiments, a battery pack is provided. The battery pack may include: a bottom plate; a battery cell assembly on the bottom plate including a plurality of battery cells arranged in a first direction; a cover on the battery cell assembly; a venting guide structure including a base sheet on the cover and a venting sheet on the base sheet; and a lid plate on the venting guide structure. The venting guide structure may include: a first venting passage between the base sheet and the venting sheet; and a second venting passage between the venting sheet and the lid plate. The first venting passage and the second venting passage may be separated in the first direction.

A battery pack according to one embodiment of the present invention comprises: a plurality of battery modules; and a heat diffusion prevention unit provided between adjacent battery modules, wherein the heat diffusion prevention unit maintains a spacing between the battery modules, blocks heat transfer, and provides a discharge path such that gas generated during thermal runaway of any one of the battery modules can be discharged upward.

Disclosed are a battery case shaping apparatus including a punch configured to shape a battery case, a die plate unit having a shaping hole configured to allow a part of the punch to be inserted thereinto, and an angle adjustment unit configured to adjust an inclination angle of the die plate unit, and a battery case shaping method using the same.

A battery diagnostic device according to an embodiment of the present disclosure may include a memory storing at least one instruction and at least one processor executing the at least one instruction, and the at least one processor may identify an individual vector representing a voltage of any one battery cell included in a battery unit at a specific point in time and a voltage change amount over a predetermined time interval after the specific point in time, identify, based on the individual vector, a specified number of reference vectors at each of a plurality of past points in time before the specific point in time, identify a first distribution characteristic among voltages of unit battery cells included in the battery unit, corresponding to the individual vector, and second distribution characteristics among voltages of the unit battery cells, corresponding to respective reference vectors, and set a diagnostic criterion for diagnosing the one battery cell based on the first distribution characteristic and the second distribution characteristics.

Disclosed herein is a battery manufacturing system comprising at least one intermediate conduit or intermediate container configured to receive a battery material mixture from a reactor configured for making the battery material mixture; and at least one measuring device configured to determine a physical property of the mixture in the at least one intermediate conduit or intermediate container downstream of the reactor.

Disclosed herein is a battery manufacturing system comprising at least one intermediate conduit or intermediate container configured to receive a battery material mixture from a reactor configured for making the battery material mixture from substances including an active material, a binder and a solvent, and/or configured to provide the battery material mixture to at least one deposition device configured for applying the battery material mixture onto an electrode substrate, and at least one content measuring device configured to determine a content of at least one of the substances in the mixture.

The present invention provides an ultrasonic welding horn for a secondary battery used in an ultrasonic welding apparatus for a secondary battery. The ultrasonic welding horn: is vertically arranged with a predetermined length, includes an upper end connected to an ultrasonic vibration unit of the ultrasonic welding apparatus, is configured to perform welding by applying ultrasonic waves while being inserted into a can of a secondary battery and pressing against an object to be welded, and includes a ring-shaped ring structure detachably coupled to an outer periphery of a lower end.

The present disclosure provides a battery unit including: a plurality of battery cells stacked in one direction; side plates disposed at both end sides in the stacking direction of the plurality of battery cells; a band member connected to at least one of mutual upper ends and mutual lower ends of the side plates; and a plurality of adhesive members positioned between the band member and the plurality of battery cells and bonded to the band member and the plurality of battery cells, wherein the plurality of adhesive members is formed spaced apart from each other, and a cooling flow path is formed between the spaced plurality of adhesive members.

According to exemplary embodiments of the present disclosure, an electrode splicing apparatus is provided. The electrode splicing apparatus includes: a first splicing unit capable of gripping a trailing end portion of a running electrode sheet; a second splicing unit disposed opposite to the first splicing unit and capable of gripping a leading end portion of a standby electrode sheet; and a line-contact type pressing unit for bonding the trailing end portion of the running electrode sheet and the leading end portion of the standby electrode sheet with a tape. The present disclosure also provides an electrode splicing method using such an electrode splicing apparatus.

According to some embodiments, a battery inspection device includes a photographing unit configured to photograph a feed state of a negative electrode being fed toward a winding core to form a jelly roll of a cylindrical battery cell and generate a negative electrode feed-state image and a processing unit configured to measure a first distance indicating the feed state of the negative electrode based on the negative electrode feed-state image, calculate a negative electrode feed amount index indicating a feed amount of the negative electrode based on the first distance, and diagnose a winding state of the jelly roll based on the negative electrode feed amount index.

A battery active discharge device may include a capacitor arranged on a vehicle side and configured to maintain a link voltage in a smoothed state, a pre-charge resistor arranged on a battery side and configured to charge or discharge the capacitor arranged on the vehicle side, a main positive relay arranged on the battery side, and a pre-charge relay having a first end connected to a first end of the main positive relay and a second end connected to a first end of the pre-charge resistor.

An ultrasonic welding device for ultrasonically welding laminated workpieces while preventing generation of burrs and/or foreign substances, and a welded structure using the same are provided. The ultrasonic welding device includes a horn for pressing a first member to torsionally ultrasonically weld the first member and a second member in contact with the first member, wherein the horn includes a horn body having a cylindrical shape to perform torsional rotation, a horn tip extending from one end of the horn body and facing the first member, and a knurling portion protruding from the horn tip to form irregularities on the first member, and the knurling portion includes a plurality of knurling portions spaced apart from each other to prevent the first member from being extruded to an outside of the horn tip due to torsional rotation of the horn and to secure a space in which the first member is accommodated

A battery cell inspection device includes a frame, an assembly mounting member which is movably mounted on the frame and on which a cell tray assembly is mounted, an ascent/descent driver mounted on the frame and moving up/down the assembly mounting member, an inspection jig disposed above the assembly mounting member in the frame and contacting a battery cell to measure a voltage of the battery cell, and a stopping member disposed above the assembly mounting member and including at least two stopping surfaces formed at different heights. An ascent height of the assembly mounting member is adjusted through selective contact between a part of the assembly mounting member and the stopping surfaces.

A battery module of the present disclosure may include a cell stack composed of a plurality of battery cells that each has an electrode lead; and a cover frame covering the front or rear part of the cell stack, wherein the plurality of electrode leads may include a lead overlapping portion formed to overlap at least partially on the outside of the cover frame and configured to be welded, and wherein the cover frame may include a body portion having a slit through which the electrode lead passes; and a support portion that is disposed to be spaced apart from the lead overlapping portion, is positioned between the lead overlapping portion and the body portion, and assists in the mutual close contact and welding of the lead overlapping portions.

A battery module according to exemplary embodiments may include battery cells, a module frame, and a first thermal barrier, wherein the module frame may accommodate the battery cells, and the module frame includes a top plate including vent holes, and the first thermal barrier may be disposed between the battery cells and the top plate.

A battery storage casing includes a lower surface part (100) configured to define a lower surface of the casing, in which a cooling flow path (110) is formed on the lower surface part and provides a path through which a cooling fluid flows, and in which one part of the cooling flow path and another part of the cooling flow path intersect each other when the lower surface part is viewed from a location spaced apart from the lower surface part in an upward/downward direction H.

Disclosed are a pouch battery cell analysis apparatus and a pouch battery cell analysis method using the same, and more particularly a pouch battery cell analysis apparatus including a measurement unit configured to measure the voltage value of a pouch battery cell, a controller configured to determine whether the pouch battery cell is defective based on the voltage value measured by the measurement unit, a cutting member configured to cut a pouch case of the pouch battery cell, a gripping member configured to grip the pouch case in tight contact with the pouch case, and an analysis unit located above the pouch battery cell, and a pouch battery cell analysis method 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.

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.

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 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.

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.

The present disclosure relates to a pouch type secondary battery, and more specifically, to a pouch type secondary battery capable of easily determining whether an electrolyte is depleted from the outside without the need to disassemble a battery case.

A battery unit of the present disclosure may include a cell assembly including a plurality of battery cells; a case accommodating the cell assembly; a busbar frame assembly including a first busbar frame covering one surface of the cell assembly, a second busbar frame covering the other surface of the cell assembly, and a top frame connecting the first busbar frame and the second busbar frame at the upper side of the cell assembly; a cover member covering the upper end of the cell assembly; and a block member positioned between the case and the cell assembly and partitioning a space between the cell assembly and the case.

According to exemplary embodiments, an electrode monitoring system is provided. The electrode monitoring system may include: a positive electrode sensor configured to measure the thickness of a traveling positive electrode; a negative electrode sensor configured to measure the thickness of a traveling negative electrode; a control part configured to process measurement data from the positive electrode sensor and the negative electrode sensor; and a display connected to the control part and configured to display the measurement data from the positive electrode sensor and the negative electrode sensor.

The present invention relates to a method of preparing FePO<4> from waste lithium iron phosphate cathode. More particularly, the present invention relates to a method of preparing FePO<4> from waste lithium iron phosphate cathode, including step (a) of preparing a hydrogen peroxide mixture by adding an aqueous hydrogen peroxide solution to a solution containing Fe and P components; step (b) of heating the hydrogen peroxide mixture; step (c) of synthesizing FePO<4> by adding an aqueous ammonia solution to the heated hydrogen peroxide mixture; step (d) of separating the synthesized FePO<4>; and step (e) of washing FePO<4> with an acidic washing solution having a pH of 1.3 to 1. 6. According to the present invention, the present invention has an effect of providing a method of preparing FePO<4> from waste lithium iron phosphate cathode, characterized in that impurities derived from waste lithium iron phosphate cathode material are easily removed, and the generation of new by-products is suppressed.

A system for managing battery performs bidirectional charge/discharge active cell balancing of a plurality of battery cells using a single converter, thereby reducing the number of components required for active cell balancing and achieving cost and size reduction of the system for managing battery.

The present disclosure provides a battery cell unit including: a plurality of battery cells; a battery cell unit frame that forms an accommodation space for the plurality of battery cells and seals the accommodated plurality of battery cells against the outside; and an insulating oil that is capable of cooling the plurality of battery cells and is hermetically injected into the accommodation space of the battery cell unit frame to immerse the plurality of battery cells, wherein the battery cell unit frame is provided with a cooling flow path penetrating therethrough through which coolant can flow in and out.

The present disclosure relates to an apparatus for manufacturing a pouch for a secondary battery for manufacturing a pouch for a secondary battery including a pouch body and a sealing portion, and the apparatus for manufacturing a pouch for a secondary battery may include a pressure portion provided to selectively press the sealing portion of the pouch for a secondary battery along a vertical direction so that the sealing portion is bent toward the vertical direction orthogonal to the horizontal direction, and selectively press the sealing portion along the horizontal direction so that the bent sealing portion moves in a direction approaching the pouch body; and an adhesive tape supply unit that supplies an adhesive tape to a target adhesive surface of the sealing portion facing the side surface of the pouch body, wherein the adhesive tape may be adhered between the target adhesive surface and the side surface of the pouch body as the sealing portion is pressed in the horizontal direction by the pressure portion, thereby obtaining the advantageous effects of simplifying the structure and provision process, and improving space utilization and design freedom.

Disclosed are a cylindrical battery cell machining apparatus including a compression unit configured to press an upper part of a cylindrical battery cell to reduce the outer diameter thereof and a fixing unit located under the compression unit, the fixing unit being configured to allow the compression unit to be mounted thereto, wherein the compression unit includes a plurality of separable units coupled to each other such that slits are formed therebetween, an elastic member is added to each of the slits, and the plurality of separable units is interconnected via the elastic members, and a cylindrical battery cell machining method using the same.

The present disclosure relates to a secondary battery including an electrode assembly; an electrode tab electrically connected to the electrode assembly and bent to be in close contact with an end of the electrode assembly; a pouch provided to surround a perimeter of the electrode assembly; an electrode lead including a first lead portion electrically connected to the electrode tab and accommodated inside the pouch to be stacked on the electrode tab, and a second lead portion having one end connected to the first lead portion and the other end exposed to the outside of the pouch; and a protector provided to surround an edge of the first lead portion, thereby obtaining the advantageous effect of minimizing damage to a pouch and improving stability and reliability.

The present disclosure provides a battery pack including: a battery unit including a plurality of battery cells stacked in one direction, side plates disposed at both ends in the stacking direction of the plurality of battery cells, and a band member connected to at least one of the mutual upper ends and mutual lower ends of the side plates; and a pack case forming an accommodation space in which at least one battery unit is mounted, wherein the pack case includes a pack case inlet and a pack case outlet through which insulating oil can flow in and out to the battery unit, and the plurality of battery cells is stacked in a direction crossing the inflow direction of the insulating oil.