LG Energy Solution Patente

Disclosed is a solid electrolyte for a solid-state battery, preferably an all-solid-state battery, which may be protected from moisture by chemically reacting a material such as an amphiphilic compound, e.g., a surfactant with a sulfide-containing solid electrolyte, as well as a -solid-state battery comprising the solid electrolyte. The solid electrolyte for the all-solid-state battery is surface-modified with an amphiphilic compound having a hydrophilic group and a hydrophobic group.

A battery pack according to certain embodiments of the present disclosure comprises: a plurality of battery cells; a pack frame including a bottom frame and a side frame that form a storage space in which the battery cells are stored; a spacer that is located on an upper part of the bottom frame and on which the battery cells are seated; a holding frame that is located on an upper part of the spacer and formed with holes into which the battery cells are fitted; and a coolant that flows in a space between the spacer and the holding frame so as to directly cool the battery cells inside the pack frame.

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The present disclosure relates to a test device and a test method for power prediction of a battery management system, and a power prediction test device testing power prediction of a battery management system according to an embodiment of the present disclosure may include: a database including a plurality of power map tables indicating power according to a state of charge (SOC) and a temperature; a test executor generating a plurality of power prediction conditions with a combination of a plurality of SOCs and a plurality of temperatures in a power map table for a battery device, to which the battery management system is applied, among the plurality of power map tables, providing the battery management system with each of the plurality of power prediction conditions and a power prediction instruction corresponding to the each power prediction condition, and receiving a plurality of power prediction values according to the plurality of power prediction conditions from the battery management system; and a test comparator comparing each of the plurality of power prediction values with a normal range defined by a plurality of reference power values in the power map table based on a power prediction condition corresponding to the respective power prediction values.

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Disclosed herein relates to a battery device including: a base structure; a plurality of cell assemblies mounted on the base structure, each comprising a plurality of battery cells; and a top cover including a pair of outer walls coupled to the base structure and spaced apart from each other in a first direction and an upper plate covering the plurality of cell assemblies and having an upper cooling channel.

The present invention relates to a connector. The connector according to one aspect of the present invention is a battery cell connector for electrically connecting a battery cell to the outside, and comprises: a base member having a lead surface on which an electrode lead of the battery cell can be placed; and a conducting assembly coupled to the base member so as to be electrically connectable to the electrode lead placed on the lead surface, wherein the conducting assembly can include: a conductive contact member movably coupled to the base member so that at least a part thereof can protrude from the lead surface of the base member; and an elastic member for elastically supporting the contact member toward the lead surface of the base member.

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A battery module according to an embodiment of the present disclosure may include a module housing having an accommodation space, and a plurality of pouch-type battery cells placed horizontally and stacked in a thickness direction within the accommodation space, wherein the battery cell includes a body portion accommodating an electrode assembly, and a sealing portion extended from an edge of the body portion, at least part of the sealing portion being folded down to prevent moisture buildup.

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A battery diagnosing apparatus according to one embodiment of the present disclosure includes: a profile acquisition unit that acquires a charging profile representing a correspondence between a voltage and a current of a battery measured during a charging process; and a control unit that calculates a first constant current (CC) capacity and a first constant voltage (CV) capacity from the charging profile, calculates a capacity change rate for the first CC capacity and the first CV capacity based on a second CC capacity and a second CV capacity stored in advance, and diagnoses a state of the battery based on the calculated capacity change rate and a preset correction coefficient.

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The present disclosure relates to a negative electrode, a secondary battery including the same, and a secondary battery system for the same. The negative electrode can implement a predetermined volume resistance by including aluminum-containing particles of specific components and a conductive material in a coating layer. Such a negative electrode can implement appropriate insulating properties on the negative electrode surface during an internal short-circuit while allowing a predetermined current to leak, thereby preventing melt-down phenomenon and/or rapid heat generation of the secondary battery due to internal short circuits.

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A battery activation process facility according to the present disclosure may include a plurality of charging and discharging devices disposed in a horizontal direction and a vertical direction; and duct modules connected to the plurality of charging and discharging devices, wherein the charging and discharging device may include a jig section having a charging and discharging jig for charging and discharging battery cells; a power section having a power supply unit for supplying charging and discharging power to the charging and discharging jig; and an enclosure storing the jig section and the power section and having a ventilation hole provided on at least one side surface thereof, wherein the duct module may be configured to be in direct communication with the ventilation hole of each of the charging and discharging devices.

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The technical idea of the present disclosure provides a battery pack. The battery pack includes: a base plate including a lower cooling channel; a cell assembly disposed on the base plate, and including a plurality of battery cells; a top plate disposed on the cell assembly, and having an upper cooling channel; a front end frame coupled to the top plate, and having a first side cooling channel communicating with the upper cooling channel; a rear end frame extending from the base plate to the top plate, and having a second side cooling channel communicating with the upper cooling channel and the lower cooling channel; an inlet pipe coupled to the front end frame, having an inlet channel communicating with the first side cooling channel and configured to deliver externally provided cooling fluid to the first side cooling channel; and an outlet pipe coupled to the base plate, and having an outlet channel communicating with the lower cooling channel.

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The apparatus for diagnosing a battery according to an embodiment of the present disclosure includes a profile obtaining unit configured to obtain one or more profiles based on voltage and capacity of a battery; an image converting unit configured to convert each of the one or more profiles into an image and generate a diagnostic image from the converted one or more images; and a control unit configured to diagnose a state of the battery corresponding to the diagnostic image using a pre-learned diagnostic model.

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A battery diagnosing apparatus according to one embodiment of the present disclosure includes: a profile acquisition unit that acquires a battery profile representing a correspondence between a voltage and a capacity of a battery; and a control unit that divides a capacity section of the battery profile into a plurality of sections, derives a target value for one target index related to a differential capacity peak among a plurality of diagnosis indices set in advance, from each of the divided sections, compares a correspondence between the derived plurality of target values with a preset reference profile that represents a correspondence between a plurality of target indices, and diagnoses a state of the battery based on a result of the comparison.

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A battery diagnosing apparatus according to one embodiment of the present disclosure includes: a profile acquisition unit that acquires a battery profile representing a correspondence between a voltage and a capacity of a battery; and a control unit that divides a capacity section of the battery profile into a plurality of sections, derives a target value for one target index related to a differential capacity peak or a charging end voltage among a plurality of diagnosis indices set in advance, from each of the divided sections, compares a correspondence between the derived plurality of target values with a preset reference profile that represents a correspondence between a plurality of target indices, and diagnoses a state of the battery based on a result of the comparison.

The battery management apparatus according to an embodiment of the present disclosure includes a charging unit electrically connected to a battery and configured to charge the battery; and a control unit configured to set a target capacity based on a battery capacity for the battery and a preset reference capacity, compare a charging capacity after a charge termination voltage of the battery with the target capacity, and transmit a charging command to the charging unit based on the comparison result.

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The present invention relates to positive electrode material powder including a single particle type lithium nickel-based oxide in which an amount of nickel among metals excluding lithium is 80 mol% or more, wherein the positive electrode material powder has a D<50> of 5.0µm or more, and has a crystal strain of 280×10<-6> or less, and a method of preparing the same.

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