LG Energy Solution Patente

Disclosed herein is a secondary battery capable of stably connecting thin-film tabs to a current collector as the number of electrode assemblies increases. The secondary battery includes a casing, a plurality of electrode assemblies, electrode tab bundles formed on the electrodes of the plurality of electrode assemblies, respectively, a current collector coupled to the electrode tab bundles of the plurality of electrode assemblies, and a cap. The current collector includes a connecting portion on which a connection terminal connected to the external terminal is positioned, and a plurality of branches extending from the connecting portion , the electrode tab bundles being coupled thereto.

Disclosed is a battery manufacturing system, comprising a processing device configured to process a battery material that is provided as a continuous material, wherein the processing device is configured to process the battery material in successive segments by processing one segment of the battery material at a time before processing a subsequent segment, a transport device configured to advance the battery material in a stepwise manner in a transport direction, alternating between an advancing phase and a resting phase, the resting phase being synchronized with processing of a segment by the processing device, and a sensor device configured to detect a marking object on the battery material in a sensing area, wherein the sensor device is arranged so that the sensing area is located upstream of the processing device in the transport direction and aligned with a boundary between two successive segments of the battery material when the transport device is in the resting phase.

A sealing block configured to seal a lead film covering a lead metal and a pouch covering the lead film. The sealing block includes a first sealing surface extending in a length direction and is configured to apply pressure in a height direction perpendicular to the length direction. The first sealing surface includes a center sealing surface extending in the length direction; and a side sealing surface located at each end of the center sealing surface in the length direction. The side sealing surface is stepped in the height direction with respect to the center sealing surface, and the side sealing surface has a sealing protrusion that protrudes in the height direction to a predetermined distance from the side sealing surface.

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 unit configured to bring the electrode tab into tight contact with the top cap, the welding mask unit having an inner space, and a debris removal unit including a shield gas injection unit configured to inject inert gas toward the inner space.

In one aspect, a computer-implemented method may include receiving, at edge processing devices, measurements from sensors associated with a battery pack. The computer-implemented method may include processing, at the edge processing devices, the measurements using a data profiler to generate data profiles including e voltage values, transforming, at the edge processing devices, the voltage values to generate transformed voltage values, determining, at the edge processing devices using the voltage values and the transformed voltage values, features, and determining, using trained edge computer-implemented models, a lithium plating occurrence prediction of the battery pack. The computer-implemented method may include modifying, using the lithium plating occurrence prediction, operation of the battery pack.

Disclosed is an apparatus, a battery manufacturing system, a battery manufacturing method and a battery product. The apparatus comprises a receptacle configured to receive a battery material and a gas withdrawal system configured to withdraw a gas from the battery material.

Disclosed is a conveyor apparatus including a conveyor belt configured to allow an object to be conveyed to be seated thereon, a frame part having an inner space in which a part of the conveyor belt is received, a driving part configured to drive the conveyor belt to one side or the other side, a roller part configured to guide the conveyance of the conveyor belt, a tension adjustment part configured to adjust tension of the conveyor belt in contact with a part of the conveyor belt, and a foreign matter removal part configured to remove foreign matter from the conveyor belt and/or the inner space of the frame part, wherein the tension adjustment part includes a tension roller configured to provide pressure to the conveyor belt in contact with the conveyor belt, a cylinder part coupled to the tension roller, the cylinder part being configured to provide a forward or backward driving force to the tension roller, and a sensor unit configured to detect the amount of tension applied to the conveyor belt.

Disclosed herein is an isotope battery (1, 1a, 1b, 1c, 1d) and its fabrication method. The isotope battery (1, 1a, 1b, 1c, 1d) comprises a first conductivity type semiconductor layer (110a), a radiation source (130) provided on a first side surface of the first conductivity type semiconductor layer (110a) and having at least partially a droplet shape, and a second conductivity type semiconductor layer (120a) facing the first side surface of the first conductivity type semiconductor layer (110a) with the radiation source (130) in-between. The isotope battery (1, 1a, 1b, 1c, 1d) of the present disclosure and its fabrication method may be mass-produced by a simple process without wasting expensive materials.

A battery pack according to an embodiment of the present disclosure includes: a pack case having a vent hole formed therein; a filtering path communicating with the vent hole and configured to guide gas, the filtering path having a filter unit for capturing solid particles generated during thermal propagation; and a cooling path for cooling the gas and the solid particles.

A battery control apparatus and a battery control method are disclosed. The battery control apparatus according to an embodiment of the present disclosure includes a measuring unit for measuring a voltage of a battery and outputting a voltage measurement value representing the measured voltage, a memory for storing a multi-stage charging protocol data including a first current rate, a second current rate used in another constant current charging procedure following a constant current charging procedure using the first current rate, and a first criterion SOC associated with the first current rate, and a processor for identifying a SOC of the battery based on the voltage measurement value. The processor performs a temporary discharging procedure, when the SOC of the battery reaches the first criterion SOC while the constant current charging procedure using the first current rate is in progress, determines an adjusted second current rate different from the second current rate, based on discharging information of the temporary discharging procedure, and performs a constant current charging procedure using the adjusted second current rate, after the temporary discharging procedure is finished.

The present disclosure relates to a battery cell and a manufacturing method thereof. The battery cell according to one embodiment of the present disclosure includes an electrode assembly including a cathode, an anode and a separator; and a battery case including a sealing portion that houses the electrode assembly and seals an outer periphery of the electrode assembly, wherein the sealing portion includes a first area, and a second area excluding the first area, and wherein the first area is an area where the crystallinity of the battery case is higher than that of the second area.

The present invention relates to a method of preparing a positive electrode which includes forming a solid electrolyte by mixing a lithium salt and a polymer for a solid electrolyte in a dry atmosphere, forming a dry mixture by stirring after adding a conductive agent and a positive electrode active material to the solid electrolyte in a dry atmosphere, and pressing after coating a current collector with the dry mixture.

Disclosed is a battery pack and a vehicle including the same. The battery pack includes a battery module having a plurality of battery cells; a pack case configured to accommodate the plurality of battery modules; and a cooling member accommodated in the pack case and configured to contact the plurality of battery modules, wherein some of the plurality of battery modules are in contact with one surface of the cooling member, and the remainder of the plurality of battery modules are in contact with the other surface of the cooling member.

The present disclosure provides a secondary battery electrode thickness measuring device comprising a fixed side base member; a lower base member coupled to the side base member; a plurality of electrode transfer rollers supported by the side base member, supporting an electrode, and transferring the electrode in one direction; a sensor part measuring a thickness of an electrode positioned in a space between two electrode transfer rollers among the plurality of electrode transfer rollers; a moving part moving the sensor part; and a calibration part zero-point calibrating the sensor part.

According to some embodiments, a battery management device includes: an interface configured to obtain an open- circuit voltage (OCV) value of each of battery cells of a battery; and a controller configured to calculate an OCV difference value representing a change amount of the OCV value of each battery cell during a reference period, to set a classification reference value based on a distribution of the OCV difference values of the battery cells, and to classify states of the battery cells based on the classification reference value.

A three-dimensional electrode structure design system according to an embodiment of the present invention may comprise: a structure forming module configured to form a conductive additive and binder (CBD) structure using a first design parameter input for the CBD structure, and form an electrode structure using a second design parameter input for the electrode structure; a calculation module configured to calculate an effective electrical conductivity of the CBD structure using an intrinsic electrical conductivity of a conductive additive and an intrinsic electrical conductivity of a binder, calculate an effective electrical conductivity of the electrode structure using an intrinsic electrical conductivity of the active material, an intrinsic electrical conductivity of CBD particles, and an intrinsic electrical conductivity of the current collector, and calculate a calculated resistivity of the electrode structure by converting the effective electrical conductivity of the electrode structure into a reciprocal; a correction module configured to calculate a deviation by comparing the calculated resistivity with a target resistivity and correct a variable or shape of an electrode structure in a direction of minimizing the deviation; and a backtracking module configured to calculate the intrinsic electrical conductivity of the active material, the intrinsic electrical conductivity of CBD particles, the intrinsic electrical conductivity of the current collector, and a third design parameter, all of which are included in the corrected electrode structure.

A positive electrode active material includes a lithium nickel-based oxide having the content of nickel (Ni) ranging from about 50 mol% to 70 mol% among total transition metals, and a coating layer formed on a surface of the lithium nickel-based oxide and including cobalt (Co) and lithium (Li). The coating layer has a form including both dot-shaped and film-shaped phases, and the weight ratio of lithium (Li) to cobalt (Co) in the positive electrode active material ranges from about 5 to 20.

A secondary battery inspection apparatus according to an embodiment of the present disclosure for solving the above problems includes a plurality of first mirrors formed radially to be spaced apart from a central axis of a body by a first radius; a plurality of second mirrors formed radially to be spaced apart from the central axis by a second radius smaller than the first radius; a plurality of prism mirrors disposed on the inner side of the plurality of first mirrors and the plurality of second mirrors in a direction of facing the plurality of first mirrors and the plurality of second mirrors, respectively, and formed radially to be spaced apart from the central axis by a third radius smaller than the second radius; and a light receiving unit that receives light reflected through the prism mirror.

A battery cell of the present invention includes a wound electrode stack, wherein the electrode stack includes a plurality of positive electrodes and a plurality of negative electrodes, and for at least two of the electrodes, the winding center of the electrode with a lower active material loading amount is located inward of the winding center of the electrode with a higher active material loading amount.

The present invention relates to a method for manufacturing a pre-lithiated negative electrode capable of suppressing formation of by-products during a pre-lithiation process, the method including the steps of preparing a negative electrode including a negative electrode active material layer having a moisture content of 800 ppm or more and provided on at least one surface of a negative electrode current collector layer; and bringing a transfer stack including a lithium metal layer and a base layer into contact with one surface of the negative electrode active material layer, with the lithium metal layer facing the one surface, and also relates to a lithium secondary battery including a pre-lithiated negative electrode manufactured therefrom.

An open-circuit identification device according to an embodiment disclosed herein may be a device that identifies whether a fuse disposed on a charge/discharge line connected to a battery cell included in a battery pack is blown, the open-circuit identification device may be connected to the fuse through a reference node, a first node, and a second node, the open-circuit identification device may include a first filed-effect transistor (FET) connected to the fuse through the first node, a second FET connected to the fuse through the second node, and an integrated circuit (IC) chip configured to identify whether the fuse is blown based on an operating state of at least one of the first FET and the second FET.

The present disclosure relates to a cell assembly and a battery pack including the same, the cell assembly including: a cell block including a plurality of battery cells; a protective cover coupled to the front and rear of the cell block, respectively; and a module frame surrounding the circumference of the cell block so that the cell block is sealed and coupled to the protective cover, wherein the module frame includes at least one melting groove at an upper portion thereof.

A battery cell tracking method includes acquiring an identification (ID) of a target semifinished cell on a process line, acquiring process data corresponding to the target semifinished cell, and mapping the ID and the process data.

Provided is a method of tracking a cell, the method including obtaining (P110), in a first sub-process included in a secondary battery manufacturing process, an electrode identifier (ID) identifying to a unit electrode, obtaining (P120), in a second sub-process included in the secondary battery manufacturing process, a cell ID for identifying to a semi-finished cell including the unit electrode, and matching (P130) the electrode ID and the cell ID.

A cell tracking method executed by a cell tracking system including a sensor subsystem (110,130) and a signal processing subsystem, the method comprising:detecting, by the sensor subsystem (110), a semifinished cell (306) on a process line (300);generating, by the signal processing subsystem, a virtual identification, ID, for the detected semifinished cell (306) upon detection of the semifinished cell (306);acquiring a cell ID of the semifinished cell (306) by detecting, by the sensor subsystem (130), a code object formed on the semifinished cell (306); andmatching, by means of the signal processing subsystem, the virtual ID and the cell ID.

The invention relates to a battery manufacturing system and a corresponding method for manufacturing batteries, the manufacturing system comprising a cylindrical roller configured to apply a roll pressure onto a battery cell while rolling over the battery cell; and a protrusion protruding from a lateral surface of the cylindrical roller in a radial direction of the cylindrical roller; a pressure measurement device configured to measure a measured pressure applied and/or received by the cylindrical roller while rolling over the battery cell; and a control unit configured to adjust a position of the cylindrical roller as a function of the measured pressure.

Disclosed is an electrode assembly, a battery, a battery pack and a vehicle. In the electrode assembly, the first uncoated portion provided at a long side end of a first electrode includes a segment region divided into a plurality of independently bendable segments by a plurality of cut grooves provided along a winding direction. The segment region includes a plurality of segment groups disposed with a group separation pitch along the winding direction. The plurality of segment groups constitute at least one segment alignment on one side of the electrode assembly. At least some of central points of winding turn arcs where the p number of segment groups are located are not located on a predetermined alignment line extending in the radial direction from the center of the core.

Disclosed is a battery cell having an electrode tab with an enhanced safety, and a battery module, a battery pack and a vehicle including the same. The battery cell includes an electrode assembly including a cell body and an electrode tab provided to at least one of both sides of the cell body, a cell case configured to accommodate the electrode assembly therein, an electrode lead drawn out of the cell case by a predetermined length and connected to the electrode assembly through the electrode tab, and a tab protection module accommodated in the cell case and configured to cover at least a part of the electrode tab.

A battery diagnosis apparatus according to the present disclosure is directed to providing a battery diagnosis apparatus, a battery pack, an electric vehicle and a battery diagnosis method for diagnosing anomalies in a single battery cell or each of a plurality of battery cells connected in series using time-dependent changes in cell voltage of each battery cell without a process of comparing the cell voltage of each battery cell with the cell voltage of other battery cell(s).

The present disclosure provides a foil tab forming apparatus and method for forming an electrode tab exposed at one end of an electrode assembly in which a first electrode, a separator, and a second electrode are laminated and wound around a winding axis, and the foil tab forming apparatus includes a base portion having a flat surface; a pressure portion protruding from the flat surface of the base portion in the winding axis direction and configured to divide the electrode tab into a plurality of regions; and a plurality of forming portions provided corresponding to the plurality of divided regions and each configured to bend the electrode tab radially inward around the winding axis within each of the divided regions.

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 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 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.

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 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.

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.

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.

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.

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.

According to exemplary embodiments of the present disclosure, there is provided a battery system. The battery system includes: a battery pack having a cooling flow path at an upper part and a venting passage at a lower part; and a battery pack stack in which a plurality of the battery packs are stacked vertically. Such a battery system can efficiently cool and then discharge high-temperature flammable gas, thereby preventing thermal runaway and thermal propagation between battery modules or between battery packs.