LG Energy Solution Patente

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A battery according to an embodiment of the present disclosure may include: an electrode assembly comprising an electrode tap having a vulnerable portion formed thereon; a battery housing configured to receive the electrode assembly through an opening formed on one side thereof; a current collector comprising a tap coupling portion electrically coupled to the electrode tap and a housing coupling portion electrically coupled to the battery housing; and a cap configured to cover the opening.

The present disclosure relates to an apparatus and method for diagnosing a battery, which may diagnose a state of a battery in consideration of an overpotential. The apparatus and method for diagnosing a battery according to the present disclosure have an advantage in that charging and discharging at a criterion C-rate is not forced to diagnose the state of the battery because the state of the battery is diagnosed based on a corrected profile in which overpotential is removed from the battery profile.

An energy storage system according to one embodiment disclosed herein includes an inverter electrically connected to a grid, a converter configured to receive a communication signal and an enable signal related to an operating state of the inverter from the inverter and connected to the inverter through a power transmission line, and a controller configured to determine an outage state of the grid or a power supply state from the inverter to the converter based on the communication signal and the enable signal.

An electrode for a lithium secondary battery that includes: a metal current collector; and an active material layer that is formed on the metal current collector and comprises an electrode active material, a conductive material, and an oxide-based solid electrolyte having a lithium ion source, wherein the electrode active material and the oxide-based solid electrolyte are dispersed in the active material layer in the form of particles and have a particle size distribution of span: 1 or less. A lithium secondary battery includes the electrode as a positive electrode. A method for manufacturing the electrode for a lithium secondary battery includes: mixing and dispersing the oxide-based solid electrolyte and a solvent to prepare a solid electrolyte dispersion; mixing the solid electrolyte dispersion, the electrode active material, and the conductive material to prepare an electrode active material slurry; and applying the electrode active material slurry to an electrode current collector.

The present invention relates to a secondary battery and a battery module including the same, and more particularly, to a secondary battery, in which venting for discharging an internal gas according to a typical design value at room temperature is performed, and faster venting than the existing venting is implemented at a high-temperature condition to quickly reduce internal heat generation and an internal gas pressure, thereby minimizing internal explosive power of the secondary battery, and a battery module including the same.

According to some embodiments disclosed in this disclosure, a battery management system may comprise a data acquirer configured to acquire driving data related to driving of a vehicle and battery data related to a battery pack of the vehicle; and a controller configured to determine whether regenerative braking of the vehicle occurs based on the driving data and the battery data, derive statistical data related to the occurrence of the regenerative braking, and predict a degree of degradation of the battery pack based on the statistical data.

According to some embodiments disclosed in this document, a process management apparatus may include a sensor configured to generate a plurality of concentration values by measuring the concentration of gaseous solvent from each of a plurality of drying zones configured to dry electrode slurry to form the gaseous solvent, and a controller configured to determine the progress status of a drying process for the electrode slurry based on the plurality of concentration values and adjust a drying parameter for the plurality of drying zones based on the progress status.

An apparatus for diagnosing a battery according to the present disclosure includes a profile obtaining unit configured to obtain a battery profile representing a correspondence relationship between voltage and capacity of a battery that is charged or discharged at a predetermined target C-rate; a profile correcting unit configured to generate a corrected profile by correcting the battery profile based on an overpotential profile representing overpotential of a criterion battery for each capacity that occurs when the criterion battery is charged or discharged at the target C-rate, and generate an adjusted negative electrode profile adjusted to represent a correspondence relationship between a negative electrode capacity and a negative electrode potential of the battery using the corrected profile; and a control unit configured to diagnose a state of the battery based on a negative electrode change rate extracted from the adjusted negative electrode profile.

An apparatus for diagnosing a battery according to the present disclosure includes a profile obtaining unit configured to obtain a battery profile representing a correspondence relationship between voltage and capacity of a battery to be diagnosed that is charged or discharged at a predetermined target C-rate; a profile correcting unit configured to generate a corrected profile by correcting the battery profile based on an overpotential profile representing overpotential of a criterion battery for each capacity that occurs when the criterion battery is charged or discharged at the target C-rate, and generate an adjusted negative electrode profile adjusted to represent a correspondence relationship between a negative electrode capacity and a negative electrode potential of the battery to be diagnosed using the corrected profile; and a control unit configured to diagnose a state of the battery based on a negative electrode start potential value extracted from the adjusted negative electrode profile.

The present disclosure relates to an apparatus and method for diagnosing a battery, which may diagnose a state of a battery in consideration of an overpotential. The apparatus and method for diagnosing a battery according to the present disclosure have an advantage in that charging and discharging at a criterion C-rate is not forced to diagnose the state of the battery because the state of the battery is diagnosed based on a corrected profile in which overpotential is removed from the battery profile.

The present disclosure relates to an apparatus and method for diagnosing a battery, which may diagnose a state of a battery in consideration of an overpotential. The apparatus and method for diagnosing a battery according to the present disclosure have an advantage in that charging and discharging at a criterion C-rate is not forced to diagnose the state of the battery because the state of the battery is diagnosed based on a corrected profile in which overpotential is removed from the battery profile.

An apparatus for diagnosing a battery according to the present disclosure includes a profile obtaining unit configured to obtain a battery profile representing a correspondence relationship between voltage and capacity of a battery that is charged or discharged at a predetermined target C-rate; a profile correcting unit configured to generate a corrected profile by correcting the battery profile based on an overpotential profile representing overpotential of a criterion battery for each capacity that occurs when the criterion battery is charged or discharged at the target C-rate, and generate an adjusted positive electrode profile adjusted to represent a correspondence relationship between a positive electrode capacity and a positive electrode potential of the battery to be diagnosed and an adjusted negative electrode profile adjusted to represent a correspondence relationship between a negative electrode capacity and a negative electrode potential of the battery using the corrected profile; and a control unit configured to diagnose a state of the battery to be diagnosed based on an NP ratio extracted based on the adjusted positive electrode profile and the adjusted negative electrode profile.

An apparatus for diagnosing a battery according to the present disclosure includes a profile obtaining unit configured to obtain a battery profile representing a correspondence relationship between voltage and capacity of a battery that is charged or discharged at a predetermined target C-rate; a profile correcting unit configured to generate a corrected profile by correcting the battery profile based on an overpotential profile representing overpotential of a criterion battery for each capacity that occurs when the criterion battery is charged or discharged at the target C-rate, and generate an adjusted negative electrode profile adjusted to represent a correspondence relationship between a negative electrode capacity and a negative electrode potential of the battery using the corrected profile; and a control unit configured to diagnose a state of the battery based on a negative electrode loading amount extracted from the adjusted negative electrode profile.

According to some embodiments disclosed in this disclosure, a computing system may comprise an interface circuit; and at least one processor operatively coupled to the interface circuit, wherein the at least one processor may be configured to acquire battery data related to a battery of a vehicle, determine a regenerative braking level of the vehicle based on the battery data, adjust a driving strategy of the vehicle based on the regenerative braking level, and control driving of the vehicle based on the regenerative braking level and the driving strategy.

The present disclosure relates to an apparatus and method for diagnosing a battery, which may diagnose a state of a battery in consideration of an overpotential. The apparatus and method for diagnosing a battery according to the present disclosure have an advantage in that charging and discharging at a criterion C-rate is not forced to diagnose the state of the battery because the state of the battery is diagnosed based on a corrected profile in which overpotential is removed from the battery profile.

An apparatus for diagnosing a battery according to the present disclosure includes a profile obtaining unit configured to obtain a battery profile representing a correspondence relationship between voltage and capacity of a battery that is charged or discharged at a predetermined target C-rate; a profile correcting unit configured to generate a corrected profile by correcting the battery profile based on an overpotential profile representing overpotential of a criterion battery for each capacity that occurs when the criterion battery is charged or discharged at the target C-rate, and generate an adjusted negative electrode profile adjusted to represent a correspondence relationship between a negative electrode capacity and a negative electrode potential of the battery using the corrected profile; and a control unit configured to diagnose a state of the battery based on a negative electrode end potential value extracted from the adjusted negative electrode profile.

The present disclosure relates to a battery module and a battery pack. The battery module according to an embodiment of the present disclosure may include a plurality of battery cells, a printed circuit board (PCB) coupled to the plurality of battery cells, a temperature detection unit disposed on the PCB to detect a temperature of the plurality of battery cells, a top plate covering the PCB, and having an opening at an overlapping location with the temperature detection unit, and an opening cover covering the opening, wherein at least part of the opening cover is made of a transparent material to make the temperature detection unit visible from outside.

Disclosed is a secondary battery comprising: a stacked electrode assembly comprising a plurality of unit cells stacked in a first direction and having electrode leads at both ends thereof in a second direction perpendicular to the first direction; a multifunctional terminal block (MTB) at at least one end of the stacked electrode assembly; and a laminate sheet surrounding the side surface of the stacked electrode assembly to define a cell inner space.

The present invention provides a positive electrode active material composite comprising a positive electrode active material substrate and a compound coating layer comprising elements Li, P, and F coated on the positive electrode active material substrate, a positive electrode comprising the positive electrode, and a lithium-ion secondary battery comprising the positive electrode.

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