LG Energy Solution Patente

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A battery manufacturing system includes an electrode process device for performing an electrode process; and a roll map creating device for creating a roll map including coordinate value data indicating locations on an electrode and measurement and inspection data generated as the electrode process is performed on the electrode and matched to the coordinate value data, where the roll map creating device receives an input of a defect location of the electrode and generates tag coordinates of a tag corresponding to the defect location, define, based on the tag coordinates, a leading removal criteria coordinate leading to the tag coordinates and a following removal criteria coordinate following the tag coordinates, and create a surviving electrode roll map excluding electrode removal sections between the leading removal criteria coordinate and the following removal criteria coordinate.

The present invention relates to a positive electrode active material comprising: a single particle-form lithium nickel-based oxide having a Ni content of 50 mol% to 75 mol% and doped with a doping element M<1>; and a coating layer formed on the single particle-form lithium nickel-based oxide and comprising a coating element M<2>, wherein an oxidation number AON<c+d> defined by Equation (1) is 3.5 to 4.2, R defined by Equation (2) is 0.5 or less, and a ratio (M<1>/M<2>) of the weight of the doping element M<1> to the weight of the coating element M<2> is 0.2 to 1.0, and a positive electrode and a lithium secondary battery comprising the same.

An energy efficiency analysis device according to an embodiment disclosed in this document may comprise: a data acquisition unit configured to acquire driving information of a vehicle in a specified monitoring section; and a processor configured to classify the specified monitoring section into a plurality of behavioral factors according to a driving state on the basis of the driving information, calculate a standard energy efficiency contribution, which is a degree of affecting a energy efficiency of the vehicle by each of the plurality of behavioral factors, and calculate a score for each of the plurality of behavioral factors on the basis of the standard energy efficiency contribution.

A manufacturing method of a battery module including a step of attaching an adhesive to a battery cell includes a tape supply step in which a laminated tape having a release paper placed on one side and a sheet-like adhesive placed on the other side is continuously supplied to pass through a roller, and is supplied so that the release paper contacts the roller; an adhesive step in which a gripper gripping the battery cell glides over the roller so that the adhesive comes into contact with one surface of the battery cell, and thus the adhesive is separated from the release paper and adhered to the battery cell; and a cutting step in which the adhesive is cut by the ascent of the gripper, wherein the adhesive has a concave portion with a concave shape formed on the contact surface with the release paper so that the thickness is reduced compared to other places.

A manufacturing method and apparatus for an all-solid-state battery are disclosed, which allow for isostatic pressing without causing cell distortion, thereby preventing cracks in the electrode and electrolyte layers. The manufacturing method for the aforementioned all-solid-state battery includes the steps of: (a) arranging a lower jig with an opening formed in its center portion; (b) accommodating the cup part of a pouch cell downward into the opening of the aforementioned lower jig, and placing the sealing part located on the outer periphery of the aforementioned cup part on the upper surface of the aforementioned lower jig, thereby fixing the aforementioned pouch cell; (c) fixing an upper jig with an opening formed in its center portion on top of the aforementioned lower jig so that the openings overlap and the sealing part of the pouch cell is compressed; and (d) isostatically pressing the aforementioned pouch cell while the pouch cell is seated in the upper jig and lower jig.

Disclosed is an electrode assembly, a cylindrical battery, a battery pack and a vehicle. The electrode assembly has a structure in which a first electrode, a second electrode, and a separator interposed therebetween are wound. An outermost coated portion is the coated portion of the first electrode. A winding end of the separator extends further from the winding end of the coated portion of the first electrode. A fixing member is attached to the winding end of the separator along the axial direction from a point spaced apart from the axial end of the separator. When the winding end corner of the separator is folded as much as possible with the axial end of the fixing member acting as a folding bias point so that its outer surface faces the outer circumference, the winding end corner of the coated portion of the first electrode is not exposed to the outside.

An electrode current collector according to the present invention includes a polymer resin layer; a first metal layer disposed on one surface of the polymer resin layer; and a second metal layer disposed on another surface of the polymer resin layer, wherein the first metal layer and the second metal layer include a shape memory alloy (SMA), and the shape memory alloy (SMA) is designed such that an external force is applied to the polymer resin layer through shape deformation when a temperature of the shape memory alloy (SMA) is greater than a predetermined temperature.

An energy storage system control device may include a communication unit to receive an external power generation amount and an internal power consumption amount, a user interface unit to receive a cost function selection command from a user, a controller to determine an objective function based on a cost function selected by the user and perform battery control optimization based on the external power generation amount, the internal power consumption amount, and the objective function, wherein the controller is to perform the battery control optimization based on a first time point, determine a predicted value of battery charging/discharging power based on the battery control optimization performed at the first time point, and determine a predicted section including the predicted value of the battery charging/discharging power and re-perform the battery control optimization based on an actual value of the battery charging/discharging power being out of a range of the predicted section.

A battery diagnosis apparatus disclosed herein includes a sensor unit configured to obtain battery cell information for each of at least one battery cells and a control unit configured to determine a state of health (SOH) of each of the at least one battery cells based on the battery cell information and determine whether a defect occurs in the at least one battery cells based on an average and a standard deviation of the SOHs.

The present disclosure relates to a separator for an electrochemical device, a method for manufacturing the same, and an electrochemical device including the separator, and more particularly, to a separator for an electrochemical device including an adhesive portion provided in a small amount on an outer portion of a coating layer, thereby improving dry adhesive strength and wet adhesive strength and preventing a phenomenon of separator folding during a lamination process, a method for manufacturing the same, and an electrochemical device including the separator.

A battery management apparatus according to an embodiment of the present disclosure includes a voltage obtaining unit configured to obtain an open circuit voltage of the battery; a profile obtaining unit configured to obtain a differential profile representing a corresponding relationship between a differential capacity and a voltage of a battery; and a control unit configured to determine a voltage pattern of the battery based on the open circuit voltage and pre-stored voltage history, determine a plurality of peaks in the differential profile when the determined voltage pattern is a predetermined pattern, determine a negative electrode peak and a positive electrode peak among the determined plurality of peaks, and diagnose a state of the battery by comparing a change rate of the negative electrode peak with respect to a preset reference negative electrode peak and a change rate of the positive electrode peak with respect to a preset reference positive electrode peak.

According to one example of the present invention, a pouch-type battery cell can be provided, comprising an electrode assembly in which pluralities of positive electrodes, separators, and negative electrodes are sequentially and repeatedly laminated to be formed in a rectangular shape, and the separators are provided to protrude outward in a state where the positive electrodes and the negative electrodes are covered; and a pouch case in which a folding portion is formed on one side of four sides to accommodate the electrode assembly and a sealing portion is formed on the remaining three sides of the four sides, wherein middle layer separators among the plurality of separators are formed by pressurization inwardly so that the protruding lengths are reduced, and then the sealing portion is formed.

Disclosed are an apparatus for sealing a pouch-shaped secondary battery case, the apparatus including a sealing tool including an upper sealing tool and a lower sealing tool configured to be disposed in contact with each other in the state in which a sealed portion of the pouch-shaped secondary battery case is located therebetween in order to press and heat the sealed portion such that the sealed portion is sealed, an upper pressing unit located in front or at the rear of the upper sealing tool, and a lower pressing unit located in front or at the rear of the lower sealing tool, and a sealing method using the same.

A secondary battery according to the present invention is characterized in comprising: an electrode assembly; an outer film which has an inner space for accommodating the electrode assembly and which has an outer material opening for communicating the inner space with the outside; and a cover member covering the outer material opening of the outer film, wherein the outer film has a sealing surface at which the inner surface and the outer surface of the outer film meet in a direction perpendicular to the outer material opening and are joined by an adhesive film, and the adhesive film has a sealing index (SI) defined by the static contact angle of an adhesive surface and a peel strength in an electrolyte of 1.00 to 6.00, and a secondary battery with secured sealing durability and improved energy density may be provided.

The present application relates to a current collector and a use thereof. The present application can provide a current collector capable of forming an electrode that does not affect performance and operation of a secondary battery by exhibiting excellent electrical characteristics, including low resistance, in a normal state, and can secure stability by blocking energization of an electrode assembly through an increase in resistance in an abnormal state, and a use thereof.

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