LG Energy Solution Patente

A data processing device according to an embodiment disclosed herein may include a first communication circuit configured to receive first data, and a first controller is configured to receive the first data from the first communication circuit, transmit the first data to an upper-level controller, and receive second data from a second communication circuit included in another data processing device based on whether health validation data is received from a second controller included in another data processing device and determine whether to transmit the second data to the upper-level controller.

A battery diagnosis apparatus according to an embodiment disclosed herein includes an information obtaining unit configured to measure a current and a voltage of each of a plurality of battery cells, a resistance measuring unit configured to measure a cell resistance of the plurality of battery cells based on a discharging current and a discharging voltage of each of the plurality of battery cells, and a controller configured to apply a preset charging current to each of the plurality of battery cells for a preset charging time before resistance measurement of the resistance measuring unit and determine an assembly state of each of the plurality of battery cells based on the cell resistance.

The present disclosure relates to a unit cell, a secondary battery including the unit cell, and a battery module including the secondary battery, and a unit cell according to the present disclosure includes an electrode stack in which a first electrode, a separator, and a second electrode are alternately stacked; a first electrode tab extending from the first electrode; and a second electrode tab extending from the second electrode, wherein the first electrode and the second electrode are formed to have lengths greater than widths, the first electrode tab and the second electrode tab extend in the width direction of the first electrode and the second electrode, and two or more first electrode tabs are provided on the first electrode.

The present invention provides an electrode composite film comprising an electrode active material, a conductive material and a fiberizable binder, wherein a thickness deviation obtained from thickness measurement results at a plurality of arbitrary points is 1.5% or less, a weight deviation obtained from weight measurement results at a plurality of arbitrary points is 1.0% or less, and a tensile strength is 0.44 MPa to 1.50 MPa.

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Disclosed is a battery diagnosis apparatus and a battery diagnosis method. The battery diagnosis apparatus includes a processor configured to control a stimulation application device to intermittently apply a second electric stimulation greater than a first electric stimulation to a target cell during a state change period, and a communication unit configured to obtain current time series data during the state change period and voltage time series data representing a change history of a full-cell voltage of the target cell during rest periods of the second electric stimulation given in the state change period. The processor generates a measurement full-cell profile based on the current time series data and the voltage time series data, and analyzes the measurement full-cell profile to estimate a negative electrode participation start point.

Disclosed is a battery diagnosis apparatus and a battery diagnosis method. The battery diagnosis apparatus includes a processor configured to control a stimulation application device to intermittently apply a second electric stimulation greater than a first electric stimulation to a target cell during a state change period, and a communication unit configured to obtain current time series data during the state change period and voltage time series data representing a change history of a full-cell voltage of the target cell during rest periods of the second electric stimulation given in the state change period. The processor generates a measurement full-cell profile based on the current time series data and the voltage time series data, and analyzes the measurement full-cell profile to estimate a positive electrode scale factor.

The present disclosure relates to an electrode tab guide device for guiding electrode tabs provided at an edge of an electrode sheet being transferred by a roller. The electrode tab guide device includes: a guide body disposed on a side of a periphery of the roller; a first guide member that is spaced apart from the guide body in a peripheral direction of the roller, and guides the electrode tabs onto an outer peripheral surface of the roller; and a first adjustment unit that is coupled to the first guide member and the guide body, respectively, and adjusts a distance between the first guide member and the guide body.

Example embodiments provide a secondary battery manufacturing method. The secondary battery manufacturing method includes: loading datum point formation data indicating formation of datum points on an electrode sheet, in which the datum point formation data includes a sequence number, a coordinate, and an evaluation of each of the datum points; setting recognition sections of the datum points based on the datum point formation data, in which the recognition sections are ranges of the coordinates on the electrode sheet in which the datum points are to be sensed; and sensing the datum points on the electrode sheet to collect datum point sensing data.

A battery module is disclosed. The battery module comprises: a module housing having an accommodation space formed therein and an open upper side; a top plate installed to cover the upper side of the module housing; a plurality of battery cells stacked in the accommodation space of the module housing; and at least one thermal barrier which is interposed between one or more battery cells, is connected to the top plate, and is deformed while being connected to the top plate when opening the top plate so as to block the flame from propagating to neighboring battery cells.

A battery management apparatus according to an embodiment disclosed herein includes an obtaining unit configured to obtain a voltage of a battery cell and a controller configured to calculate a battery profile related to a capacity and the voltage of the battery cell, based on the voltage of the battery cell, identify degradation states of a positive electrode and a negative electrode of the battery cell, by using the battery profile, and manage a charging profile used for charging of the battery cell based on the degradation states of the positive electrode and the negative electrode.

The present invention relates to positive electrode material powder including a lithium composite transition metal oxide including nickel, cobalt, manganese, and zirconium, wherein a degree of single particle formation defined by Equation 1 is in a range of 2.5 to 4.5, and a method of preparing positive electrode material powder, in which four-times sintering and a zirconium doping process are included and D₅₀ of the transition metal-containing precursor is controlled to 95% or less of D₅₀ of the positive electrode material powder, as a method of preparing the same.

An apparatus for inspecting an electrode current collector according to the present invention includes a data collection unit, which is on an electrode current collector between a plurality of transfer rollers for transferring or stopping the electrode current collector in a longitudinal direction, and configured to perform XRD analysis on the electrode current collector in a stationary state to collect full-width-of-half-maximum data of a (hkl) plane, and a selection unit configured to select an electrode current collector having a potential density difference (α) of 0.20 or less as defined by Equation 1 below by using the above data. α=A111−B111A1112+A200−B200A2002+A220−B220A2202+A311−B311A31124In Equation 1 above, A(hkl) is a full width of half maximum of a (hkl) plane of a reference electrode current collector, wherein A(111)=0.089, A(200)=0.102, A(220)=0.113, and A(311)=0.138, and B(hkl) is a full width of half maximum of a (hkl) plane of an electrode current collector to be inspected.

The present invention relates to a battery pack, and more particularly, to a battery pack capable of effectively absorbing heat when thermal runaway occurs within the battery pack due to an event (impact, internal/external short circuit, etc.) within the battery pack, and blocking a heat transfer path within the battery pack to prevent the thermal runaway starting from one battery module from being transmitted to other battery modules.

A secondary battery according to an embodiment of the present disclosure may include an electrode assembly; a battery case including an accommodation portion accommodating the electrode assembly, and a side portion located at an outer side of the accommodation portion and folded at least once; and a fixing member attached to the battery case and configured to fix the side portion in the folded state. The fixing member may have a cut-off line to allow the fixing member to easily rupture when an external force is applied to the fixing member.

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