LG Energy Solution Patente

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Provided is a secondary battery in which battery capacity is improved while having relatively few restriction in shape, an amount of moisture introduced from the outside is reduced, and structural stability is improved. A secondary battery according to the present invention include an electrode assembly, an exterior film configured to surround a portion of the electrode assembly, and a cap configured to cover a remaining portion of the electrode assembly. The cap includes a connection part coupled to the exterior film, and a terminal part coupled to the connection part, exposed to each of the inside and outside of the connection part, and electrically connected to the electrode assembly at a portion thereof, which is exposed to the inside of the connection part. At least a portion of the terminal part is embedded into the connection part.

Example embodiments provide a secondary battery manufacturing system. The system includes a positive electrode cutter configured to cut a positive electrode sheet wound from a positive electrode roll to provide a plurality of positive electrodes, a negative electrode cutter configured to cut a negative electrode sheet wound from a negative electrode roll to provide a plurality of negative electrodes, an electrode identifier (ID) reader configured to sense an electrode ID of a negative electrode tab of each of the plurality of negative electrodes to generate an electrode ID sensing signal, and a controller configured to collect coordinate-related electrode ID data based on a first input amount of the positive electrode sheet, a second input amount of the negative electrode sheet, and the electrode ID sensing signal.

In a jig configured to feed gas to a laser welding target and discharge the gas, the welding jig according to a first embodiment of the present disclosure may include an outer jig into which the gas is fed and an inner jig that is inserted into the outer jig along an insertion direction to form a gap with the outer jig, and configured to receive the gas fed into the outer jig through the gap and discharge the gas. The outer jig may include an outer body into which the inner jig is inserted, and forming the gap with the inner jig, and a pair of feed units located at two sides of the outer body, and configured to feed the gas to the outer body, a feed passage along which the fed gas flows may be formed in the pair of feed units, a communication passage may be formed in the outer body and the pair of feed units to bring the feed passage and the gap into communication with each other, and directions of the gas flow in the pair of feed passages may be opposite to each other.

Example embodiments of the present technology provide a secondary battery manufacturing method. The secondary battery manufacturing method includes inspecting an electrode sheet to collect coordinate-related inspection data, which includes an evaluation value indicating a defect of the electrode sheet and coordinates matching the evaluation value, cutting the electrode sheet into first and second separate electrode sheets, winding the first and second separate electrode sheets into first and second separate electrode rolls, and determining outputs of the first and second separate electrode sheets.

A container module is disclosed. The container module according to an embodiment of the present disclosure includes a case configured to provide an internal space; a column located inside the case and extended in a top-bottom direction; a bracket including a vertical portion coupled to the column and a horizontal portion extended from the vertical portion; a battery pack located on the horizontal portion; and a support located below the bracket, and configured to support a lower surface of the horizontal portion.

The present technology provides a battery pack including a pack housing, and a battery assembly in the pack housing, in which the battery assembly includes a first cell block with a plurality of first battery cells, a second cell block with a plurality of second battery cells, a case including a first accommodation space for accommodation of the first cell block and a second accommodation space for accommodation of the second cell block, and supported by the pack housing, and an isolation structure provided between the first cell block and the second cell block to partition the first accommodation space and the second accommodation space of the case, the isolation structure including a plurality of venting channels extending in a vertical direction, the case includes a first venting hole overlapping the isolation structure in the vertical direction, and the plurality of venting channels of the isolation structure communicate with a venting space between the case and the pack housing through the first venting hole of the case.

The present disclosure relates to a pouch sheet, a pouch-type battery case and a method for manufacturing a battery case, and the pouch sheet that is formed into a pouch-type battery case includes a first polymer layer located at an outermost side, a second polymer layer located at an opposite outermost side and a metal layer located between the first polymer layer and the second polymer layer, wherein the metal layer is located at a side of a neutral plane of the pouch sheet.

The present invention relates to a secondary battery in which battery capacity is improved while having relatively few restriction in shape, and an amount of moisture introduced from the outside is reduced. The secondary battery according to the present invention may include an electrode assembly, an exterior film surrounding a portion of the electrode assembly, and a cap surrounding a remaining portion of the electrode assembly, wherein the cap may include an exterior part coupled to the exterior film; and a terminal part exposed to an outside and an inside of the exterior part and electrically connected to the electrode assembly at a portion thereof, which is exposed to the inside of the exterior part, wherein the terminal part may be restricted in movement in a direction away from the electrode assembly.

A pouch forming apparatus according to the present disclosure is configured to form a pouch including an accommodation portion configured to accommodate an electrode assembly and a sealing portion extended from the accommodation portion, and includes a heat press configured to apply pressure to the sealing portion to bend at least part of the sealing portion to form an unfolding portion extended from the accommodation portion and a folding portion extended in a direction that is different from a direction in which the unfolding portion is extended, wherein the heat press includes a main heat press configured to apply pressure to the folding portion, and a sub heat press configured to heat a hinge portion connecting the unfolding portion and the folding portion while the main heat press applies pressure to the folding portion, the sub heat press extended in a direction that is different from the extension direction of the main heat press.

A method for manufacturing an electrode according to the present disclosure includes an electrode film manufacturing step of manufacturing a sheet-like electrode film by passing a powder-type mixture between sheeting rollers and supplying the electrode film at a predetermined speed; an electrode manufacturing step of additionally feeding an electrode foil, and manufacturing an electrode by passing between the rolling rollers in a state where the electrode film and the electrode foil are laminated and bonding them to each other; a rolling roller control step of sensing the thickness of the electrode before the electrode is recovered and controlling the gap size between the rolling rollers and the rotational speed of the rolling rollers; and a feedback control step of feedback controlling the electrode film manufacturing step so that the thickness and supply speed of the electrode film are adjusted in accordance with the gap size between the rolling rollers or the rotational speed of the rolling rollers. The manufacturing method according to the present disclosure may suppress the occurrence of wrinkles in the electrode.

Example embodiments provide a secondary battery manufacturing method. The secondary battery manufacturing method includes: collecting coordinate-related inspection data and compressed measurement data from an electrode sheet; generating a roll map including spatially aligned process events of an electrode roll based on the coordinate-related inspection data and the compressed measurement data, the electrode sheet being wound into the electrode roll; and determining whether to suspend the electrode roll based on the roll map.

A unit cell stacking device according to an embodiment of the present disclosure may include a seating plate on which a plurality of unit cells are sequentially seated so as to be stacked on each other, a guide unit connected to the seating plate and guiding a downward movement of the seating plate, a measurement unit measuring a position information of the guide unit and a position information of a unit cell, and a stacking unit stacking the unit cell on the seating plate according to the position information of the guide unit and the position information of the unit cell measured by the measurement unit.

A battery identification apparatus according to an embodiment disclosed herein includes a communication circuit configured to obtain charging data including a voltage value and a capacity of one or more batteries, and a processor configured to extract, from the charging data, reference charging data in which the capacity corresponds to a reference capacity condition and identify the battery based on the reference charging data and a battery manufacturer identification condition.

An ESS management apparatus disclosed herein includes: a memory; and a processor operatively connected to the memory. The processor is configured to: acquire vehicle usage data from a first battery pack used in a vehicle among multiple battery packs of an energy storage system (ESS); acquire charging state data of remaining battery packs excluding the first battery pack among the multiple battery packs; and select a second battery pack to replace the first battery pack from among the remaining battery packs based on the vehicle usage data and the charging state data.

According to an embodiment disclosed herein, an analysis device may include an information acquisition unit configured to acquire discharging data of a battery during a charging cycle, and a controller is configured to calculate a probability density function (PDF) of each of previous charging cycles based on discharging data corresponding to each charging cycle, calculate a reference usage pattern based on the probability density function of each of the previous charging cycles, calculate a traveling usage pattern based on discharging data acquired during a current charging cycle, and calculate usage change information related to the battery based on the reference usage pattern and the traveling usage pattern.

A battery analysis apparatus according to an embodiment disclosed in this document may include an acquisition unit configured to acquire time-series voltage data of a plurality of battery cells, a calculation unit configured to calculate the average voltage of the plurality of battery cells and the voltage deviations between each of the plurality of battery cells based on the time-series voltage data, a generation unit configure to generate entropy-voltage data representing the voltage deviations as entropy values based on the voltage deviations of the plurality of battery cells, and a diagnostic unit configured to diagnose abnormalities in the plurality of battery cells based on the entropy-voltage data.

The present invention relates to a secondary battery and a method for manufacturing the secondary battery, and more particularly, to a secondary battery, in which a liquefied gas electrolyte that is prepared by liquefying a gaseous electrolyte at a high pressure is utilized to improve impregnation properties with an active material compared to the existing electrolyte, thereby designing and implementing a high-output battery, and low-temperature performance compared to the general electrolyte is easily secured and more easily and efficiently implemented compared to the conventional electrolyte, and a method for manufacturing the secondary battery.

The present invention relates to a lithium secondary battery including a positive electrode; a negative electrode facing the positive electrode; a separator disposed between the positive electrode and the negative electrode; and a non-aqueous electrolyte, wherein the positive electrode includes a positive electrode active material, the positive electrode active material includes a lithium nickel-based oxide particle represented by Formula A, the lithium nickel-based oxide particle is in a form of a single particle composed of one single nodule or a pseudo-single particle that is a composite of 30 or less nodules, and the non-aqueous electrolyte includes a lithium salt, an organic solvent, and an additive, wherein the additive includes a cyclic borate-based compound represented by Formula 1 and a compound containing a propargyl group. [Formula A] Li_aNi_bCo_cMn_dM¹_eO₂In Formula A, M¹ is at least one selected from the group consisting of Ti, Mg, Al, Zr, Y, Ba, Ca, Sr, W, Ta, Nb, and Mo, and 0.8≤a≤1.2, 0.5≤b<0.7, 0<c<0.2, 0<d≤0.4, 0≤e≤0.2, and b+c+d+e=1.

A battery management apparatus according to an embodiment disclosed herein includes an information obtaining unit configured to obtain an open circuit voltage (OCV) of a first battery corresponding to a first time from an external device, a reference OCV calculating unit configured to calculate a reference OCV of a battery corresponding to a time, and a controller configured to compare a reference OCV calculated to correspond to the first time with an OCV of the first battery corresponding to the first time to determine whether the first battery has a low voltage.

A battery management apparatus disclosed herein includes a sensor unit configured to obtain battery data of a plurality of battery cells, a memory configured to store a reference parameter for determining whether the battery data is normal, and a controller configured to generate pre-processed data by pre-processing the battery data, generate converted data by converting the pre-processed data based on a Gramian angular field (GAF) algorithm, and determine abnormal battery data from the battery data based on the converted data and the reference parameter.

A battery module according to the present disclosure includes a busbar, a busbar frame on which the busbar is mounted, a substrate including a first substrate extension portion connected to the busbar and supported by the busbar frame, a substrate bending portion bent from an end portion of the first substrate extension portion, and a second substrate extension portion extended from the substrate bending portion, wherein the substrate forms an internal space surrounded by the first substrate extension portion, the substrate bending portion and the second substrate extension portion, a fuse mounted on the second substrate extension portion, and protruded toward the internal space, and a guide structure including a barrier portion located in the internal space to prevent contact between the fuse and the first substrate extension portion.

The present disclosure relates to a battery unit, and more specifically, to a battery unit capable of measuring the temperature for each of a plurality of areas on the surface of a battery cell. A battery unit according to an embodiment of the present disclosure includes a battery cell; n (n is a natural number of 2 or more) wires installed on the surface of the battery cell and having an insulation coating formed between one end and the other end; a fixing member that attaches and fixes the one end of each of the n wires to the surface of the battery cell; and n temperature measuring elements that are respectively connected to the other ends of the n wires and measure the temperature of the other ends of the n wires, respectively.

A battery assembly is disclosed. The battery assembly according to an embodiment of the present disclosure includes a plurality of battery cells stacked in a left-right direction, each battery cell including a receiving portion having an electrode assembly and a sealing portion extended frontward from the receiving portion; an upper plate having a flat portion on which the plurality of battery cells is placed and a main groove extended in the left-right direction and accommodating at least part of the sealing portion; and a lower plate coupled to a lower surface of the upper plate.

The present disclosure relates to a manufacturing method of a lithium secondary battery comprising the steps of: preparing a battery cell including a positive electrode, a negative electrode and an electrolyte, wherein the positive electrode includes a lithium-rich manganese-based oxide in which the manganese content of all metals excluding lithium is greater than 50 mol% and the ratio of the number of moles of lithium to the number of moles of all metals excluding lithium (Li/Me) is greater than 1; and charging and discharging the battery cell at least once to activate the cell, wherein in the activating step, the charging is performed in a constant current-constant voltage mode, and the charging is ended when the charging current rate reaches 0.01 C to 0.04 C, and wherein in a region where the state of charge(SOC) of the battery cell is 3 to 60%, the charging current rate is 0.8 C to 1.2 C.

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