LG Energy Solution Patente

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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.

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According to exemplary embodiments, a secondary battery manufacturing facility is provided. The secondary battery manufacturing facility includes an electrode slurry supply tank configured to accommodate electrode slurry; a pump configured to move the electrode slurry in the electrode slurry supply tank; a die coater configured to apply the electrode slurry to an electrode current collector; a first supply pipe connecting the electrode slurry supply tank and the pump; a second supply pipe connecting the pump and a branch pipe; a third supply pipe connecting the branch pipe and the die coater; a return pipe connecting the branch pipe and the electrode slurry supply tank; a supply valve installed in the third supply pipe; and a return valve installed in the return pipe, wherein a sum of a length of the first supply pipe and a length of the second supply pipe is different from a length of the third supply pipe.

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Embodiments provide a die coater. The die coater includes a first die with a manifold, a body shim coupled to the first die, and a spacer shim coupled to the first die, in which the spacer shim includes a cover portion extending in a first direction and covering the manifold and a first protrusion connected to the cover portion and protruding in a second direction perpendicular to the first direction, the first direction is a direction in which electrode slurry is discharged, and the body shim includes a body extending in the second direction, a wing connected to an end portion of the body in the second direction, and a second protrusion protruding from the wing in the second direction.

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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.

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A slot die coater according to the present disclosure may include a plurality of slot die modules that have a slot die for applying a coating solution on a substrate, a first drive unit for moving the slot die in a first axis direction, and a rotating unit for rotating the slot die with a second axis direction as a rotation axis direction, and are disposed to be spaced apart from each other; and a module drive unit that moves each of the slot die modules in a third axis direction orthogonal to the first axis direction.

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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.

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.

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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.

A bidirectional pressurized charging and discharging facility according to the present disclosure includes a first compression plate arranged in X direction to pressurize a front side of a battery cell; a second compression plate arranged in pairs with the first compression plates to pressurize a rear side of the battery cell; a first ball screw configured to sequentially pass through a plurality of first compression plates along X direction and move the first compression plates in ±X direction by forward and reverse rotation; a second ball screw configured to sequentially pass through a plurality of second compression plates along X direction and move the second compression plates in ±X direction by forward and reverse rotation; a first driving part for providing driving force to rotate the first ball screw; and a second driving part for providing driving force to rotate the second ball screw.

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.

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.

A battery pack according to an embodiment of the present disclosure includes: a case providing an internal space and including a pack cover; a battery cell positioned within the case; a partition wall partitioning the internal space of the case; and a melting bolt fastening the pack cover and the partition wall. The melting bolt is configured to melt at a predetermined temperature.

The present disclosure relates to a battery module including a cell stack including a plurality of battery cells, a module case configured to accommodate the cell stack, and a top cover disposed on top of the module case, wherein the top cover includes a plurality of venting areas configured to discharge venting gas.

Disclosed are a battery cell activation tray and a battery cell produced using the same, and a battery pack and a vehicle including the battery cell. A battery cell activation tray according to an embodiment of the present disclosure is a battery cell activation tray where battery cells are seated and an activation process is performed, and it includes a pair of inner frames each supporting both ends of the battery cell; an outer frame to which the inner frames are coupled; and a pressure member disposed between the pair of inner frames and pressurizing a center of the battery cell.

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