LG Energy Solution Patente

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A battery module according to an embodiment of the present invention includes a cell assembly including a plurality of battery cells, a module case configured to house the cell assembly in an internal space, a frame cover positioned on an upper portion of the module case to cover the cell assembly and having at least one venting hole, and a support plate configured to form a predetermined space with the frame cover.

Disclosed is a side sealing apparatus for stacked type electrode assemblies, and more particularly a side sealing apparatus for stacked type electrode assemblies for sealing a side surface of a stacked type electrode assembly having a separator interposed between a first electrode and a second electrode, the side sealing apparatus including a first sealing tool located on one side surface of the stacked type electrode assembly and a second sealing tool located on another side surface of the stacked type electrode assembly, wherein at least one of the first sealing tool or the second sealing tool has a protruding portion and a depressed portion at an inner surface thereof configured to face the side surface of the stacked type electrode assembly.

Disclosed are a pouch-shaped secondary battery pressing apparatus and a pouch-shaped secondary battery pressing method using the same, and more particularly a pouch-shaped secondary battery pressing apparatus for pressing a pouch-shaped secondary battery, the pouch-shaped secondary battery including a battery case having a pocket portion to receive an electrode assembly and an extension portion to capture gas generated in an activation step, the pouch-shaped secondary battery pressing apparatus including a pair of pressing plates located so as to face one surface and the other surface of the pocket portion of the battery case and a pair of auxiliary plates located so as to face one surface and the other surface of the extension portion of the battery case, and a pouch-shaped secondary battery pressing method using the same.

A cooling device according to some embodiments includes: a heat sink including a plurality of cooling channels extending in a first direction and spaced apart from each other in a second direction perpendicular to the first direction and a plurality of hollows extending in the first direction and spaced apart from each other in the second direction; and a block coupled to the heat sink, wherein the block includes a plurality of first holes and a plurality of second holes on a side near the heat sink and on a side far from the heat sink, wherein each of the plurality of first holes overlaps a corresponding one of the plurality of cooling channels in the first direction, and each of the plurality of second holes overlaps a corresponding one of the plurality of hollows in the first direction, and each of the plurality of cooling channels includes two or more sub-channels. Some embodiments of the present disclosure can rapidly cool the battery. Accordingly, the stability of the battery can be enhanced, and rapid charging of the battery can be enabled.

Disclosed are a thermal insulation pad for secondary batteries, the thermal insulation pad including a support member and a foam layer formed on one surface of the support member, wherein the foam layer includes an edge portion and a central portion located inside the edge portion, and the porosity of the edge portion is less than the porosity of the central portion.

Disclosed are a current collector plate alignment apparatus and a battery cell produced using the same, and a battery pack and a vehicle including the battery cell. A current collector plate alignment apparatus according to an embodiment of the present disclosure is an apparatus for aligning a current collector plate provided in a battery cell, and includes a seating member on which the current collector plate is seated; an alignment member that moves toward the current collector plate to align the current collector plate; and an operating member that operates the seating member and the alignment member.

The present invention relates to a secondary battery and a method for manufacturing the same, The secondary battery according to an aspect of the present invention may comprise a cap comprising a first surface, a second surface perpendicular to or inclined to the first surface, and a corner connecting the first surface to the second surface; an electrode assembly, one side of which is covered by the cap; and an exterior film comprising a sheet-shaped accommodation part surrounding the electrode assembly in a circumferential direction, first and second extension parts extending respectively from one edge and the other edge of the accommodation part, and a coupling part coupling the first and second extension parts to each other. The coupling part may be disposed correspondingly to the corner.

The present invention relates to an electrode including an electrode active material layer including an electrode active material, a conductive material, and a binder, wherein the electrode active material has a specific surface area of 10 m²/g to 50 m²/g, and the electrode active material layer has an A, defined by factors including input amounts of the electrode active material and the conductive material in the electrode, an loading amount and a specific surface area of the electrode active material, and a specific surface area and an average particle diameter of the conductive material, of 0.70 cm²µm/mg or greater, and may achieve an electrode having a large loading amount and low resistance, thereby providing a secondary battery having excellent capacity characteristics and improved resistance characteristics.

The present invention relates to a silicon carbon composite, an anode active material comprising same, an anode composition, an anode, a lithium secondary battery, a battery module, and a battery pack, wherein, in a Si<2p> spectrum obtained by XPS analysis, a ratio of the intensity of Si<x>(0<x≤4) present at 100.5-105 eV to the intensity of a Si0 peak present at 99-100.5 eV is 0.1 to 0.9.

A battery diagnosis method according to an embodiment of the present invention relates to a method for diagnosing a cell abnormality during charge/discharge testing for a module including a plurality of cells, wherein the battery diagnosis method may comprise the steps of: collecting battery-state-related measurement values for respective cycles of the charge/discharge testing; determining whether a voltage deviation between cells within the module among the battery-state-related measurement values is greater than or equal to a set threshold value; if the voltage deviation between cells within the module is greater than or equal to the set threshold value, calculating data representing the amount of capacity changes in the module relative to the amount of changes in a charging voltage or a discharging voltage; and identifying a trend of the data representing the amount of capacity changes in the module relative to the amount of changes in the charging voltage or the discharging voltage, so as to determine an abnormal cell within the module.

A battery assembly according to the present disclosure comprises a plurality of batteries; a busbar electrically connected to electrode leads of the plurality of batteries; and a busbar frame having a busbar socket into which a portion of the busbar is inserted, the busbar frame being coupled to the busbar and supporting the busbar, and the busbar comprises a body portion to which the electrode leads overlapping each other are coupled; and a plug portion integral with the body portion, extending from the body portion toward the busbar frame, and configured to be inserted into the busbar socket to fix the body portion to the busbar frame.

The present disclosure provides a separator for a lithium secondary battery, including a porous polymer substrate; and an inorganic coating layer present on at least one surface of the porous polymer substrate, the inorganic coating layer including core-shell composite particle precursors, wherein the core-shell composite particle precursors include a core portion and a shell portion covering at least a part of a surface of the core portion, wherein the core portion includes inorganic particles, and wherein the shell portion includes an acrylic monomer or oligomer.

A battery cell according to the present disclosure includes an electrode assembly including a positive electrode, a negative electrode and a separator stacked along a stacking direction; a cell case accommodating the electrode assembly; and a thermal insulation coating layer formed by coating on a part of a remaining portion of the cell case except two side portions in the stacking direction of the electrode assembly, the thermal insulation coating layer including a thermal insulation material, wherein the cell case includes a contact portion disposed at a different location from a location of the thermal insulation coating layer, the contact portion configured to contact a cooler.

A battery shape inspection apparatus according to one embodiment of the present invention may comprise: at least one processor; and memory for storing at least one command executed through the at least one processor. Here, the at least one command can includes the commands of: acquiring a vertical cross-sectional image of a battery; defining, in the vertical cross-sectional image, a reference line passing through an area of a crimping unit; and calculating the flatness of the crimping unit by using the intersection point of the reference line and the area of the crimping unit.

Disclosed are a battery cell pressing and cooling system capable of reducing the process time required when cooling and pressing a pouch battery cell during an activation process of the pouch battery cell and measuring the voltage of the battery cell at the same time, thereby dramatically shortening the process time, and a method of operating the same.

Disclosed are a battery cell temperature measurement apparatus and a battery cell temperature measurement method using the same, and more particularly a battery cell temperature measurement apparatus including a first plate in tight contact with one surface of a battery cell, a second plate in tight contact with the other surface of the battery cell, the second plate including at least one through-hole, a connection unit including a first connection unit detachably coupled to the through-hole, a temperature measurement unit extending through the connection unit and the through-hole, the temperature measurement unit being configured to measure the temperature of the battery cell, and a fastening unit coupled to the connection unit and located on an outer circumferential surface of the through-hole, and a battery cell temperature measurement method using the same.

Disclosed are a quick charging device for charging a plurality of battery packs and a quick charging method using the same, and more particularly a quick charging device for charging a plurality of battery packs, the quick charging device including a plurality of first variable resistor modules connected respectively to the plurality of battery packs, the resistance of each of the first variable resistor modules being adjustable, a plurality of second variable resistor modules connected respectively to the plurality of battery packs, the resistance of each of the second variable resistor modules being adjustable, a positive high-voltage terminal connected in branch to the respective first variable resistor modules, a negative high-voltage terminal connected in branch to the respective second variable resistor modules, and a controller connected to each of the first variable resistor modules and the first variable resistor modules, the controller being configured to adjust resistance values of the first variable resistor modules and the second variable resistor modules, and a quick charging method using the same.

Disclosed herein are a method of manufacturing a secondary battery, a secondary battery, a battery module including the same, a battery pack, and a vehicle. The secondary battery may include an electrode assembly and a current collector. The electrode assembly may include an electrode portion, and first and second foil tabs formed on the electrode portion. The current collector may include a first current collecting portion welded to the first foil tabs and a second current collecting portion welded to the second foil tabs. The first foil tabs may be bent in one direction toward the first current collecting portion, and the second foil tabs may be bent in a direction opposite to that of the first foil tabs toward the second current collecting portion. The present disclosure may prevent occurrence of unwelded portions in some foil tabs when welding a large number of foil tabs and the current collector.

Disclosed are a battery module with enhanced safety and a battery pack including the same, and more particularly a battery module including a plurality of battery cells, a module frame being configured to accommodate the plurality of battery cells, an end plate located at each of a front and a rear of the plurality of battery cells, a busbar frame being configured to electrically connect the plurality of battery cells to each other, a terminal portion having one side connected to the busbar frame and an other side projecting outwardly of the end plate, and a blocking member being located at a position adjacent to the terminal portion and a battery pack including the same.

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