LG Energy Solution Patente

The present invention relates to a pouch film laminate including a base material layer, a gas barrier layer, and a sealant layer which are sequentially laminated, wherein the pouch film laminate includes a silicone-based release coating layer coated on the sealant layer, the silicone-based release coating layer has a thickness of 1 µm or less, and the silicone-based release coating layer includes a silicone-based release agent, wherein the silicone-based release agent is a cross-linked silicone-based polymer having a weight-average molecular weight of less than 1,000,000 g/mol.

A battery management device according to an embodiment of this document includes a conversion circuit configured to switch an electrical connection between a first battery pack and a second battery pack, and one or more processors configured to determine, based on an operation mode of a battery system including the first battery pack and the second battery pack, a connection mode including a multi-connection mode or a single connection mode between the first battery pack and the second battery pack and a load connected to the battery system and manage an operation of the battery system by controlling the conversion circuit based on the connection mode.

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An electrode base material manufacturing facility related to one example of the present invention may comprise a conveying part including a conveying roll arranged so that light is transmitted into an internal space through a surface, and arranged to guide traveling of an electrode base material penetrating a drying part, an illuminance sensor mounted in the internal space of the conveying roll and arranged to sense illuminance of light transmitted into the internal space, and a control part arranged to inspect a contamination level of the conveying roll based on the illuminance information of the illuminance sensor and to stop the conveying part if the contamination level corresponds to a preset stop contamination level.

Disclosed are a method and an electronic device for measuring the resistance of a target electrode, the method comprising the steps of: acquiring a chart related to the electrical conductivity of a target electrode according to changes in frequency after the target electrode has been immersed in an electrolyte for a predefined time or longer; determining a first point and a second point on the electrical conductivity graph of the target electrode, the graph being included in the chart; and measuring the resistance of the target electrode on the basis of the first point and the second point.

Disclosed herein relates to a slot die coater including a first die block provided with a manifold for accommodating an electrode slurry; a second die block coupled to the first die block; and a coater shim interposed between the first die block and the second die block, wherein the coater shim includes: a body shim that wraps around both sides and the rear surface of the manifold, and a plurality of spacer shims spaced apart between the body shims so as to traverse toward the front surface of the manifold, with concave insulating solution flow path formed on their surfaces, wherein the plurality of spacer shims include: a first spacer shim whose position is fixed relative to the body shim, and a second spacer shim that is movable within the first spacer shim.

Disclosed is a battery pack and a vehicle including the same. The battery pack includes a plurality of battery modules in which a plurality of battery cells are stacked; a pack case in which the plurality of battery modules are accommodated; and a fastening member configured to fasten the pack case, wherein at least a portion of the fastening member is coupled to the pack case and is broken when a pressure inside the pack case increases.

Disclosed are a method and an electronic device for determining a resistance of a battery cell, the method comprising the steps of: performing EIS analysis of the battery cell according to a plurality of temperatures including a first temperature and a second temperature so as to obtain a chart relating to the impedance of the battery cell according to a change in frequency; extracting a first inductance of the battery cell at the first temperature on the basis of a first graph relating to the impedance of the battery cell at the first temperature; and determining the resistance of the battery cell at the second temperature on the basis of the first inductance, wherein the second temperature is higher than the first temperature.

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A battery cell according to an embodiment of the present disclosure includes an electrode assembly; and a battery case including a first cover portion and a second cover portion covering both sides of the electrode assembly in a thickness direction. A recessed terrace forming portion is formed at both edges of at least one of the first cover portion or the second cover portion, and the first cover portion and the second cover portion are sealed together at the terrace forming portion.

Embodiments provide a die coater. The die coater includes a first die with a manifold and a shim coupled to the first die, in which the shim includes a body extending in a first direction and a spacer shim extending in a second direction perpendicular to the first direction and dividing the manifold, the spacer shim defines an insulation flow path configured to discharge insulating slurry, the insulation flow path includes an inlet, a first insulation flow path connected to the inlet, a buffer connected to the first insulation flow path, and a second insulation flow path connected to the buffer, and a width of the second insulation flow path and a width of the buffer are different from each other.

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