LG Energy Solution Patente

Disclosed is an apparatus for diagnosing a battery, which includes a profile obtaining unit configured to obtain a charging profile representing a voltage change of a battery in a charging process; and a control unit configured to calculate a voltage change amount of the battery at a point in time when charging starts in the charging profile, calculate a target resistance of the battery based on the calculated voltage change amount, and diagnose a state of the battery by comparing the target resistance with a first resistance profile in which a target resistance of the battery calculated in a previous charging cycle is stored.

The present disclosure relates to a battery assembly, and more specifically, to a battery assembly including secondary batteries that can be charged and discharged. A battery assembly according to an embodiment of the present disclosure may include a plurality of secondary batteries; and a housing accommodating the plurality of secondary batteries, wherein the secondary battery may include an electrode assembly; an exterior material having a receiving portion accommodating the electrode assembly and an exterior material opening that allows an internal space of the receiving portion to communicate with the outside; and a cover member covering the exterior material opening, wherein some of the exterior material may overlap each other to form an exterior material overlapping portion, and the exterior material overlapping portion may be in close contact with the receiving portion and the housing therebetween or in close contact with the receiving portion and a neighboring secondary battery therebetween.

A battery pack according to various embodiments comprises: a cell assembly including a plurality of battery cells; and a battery pack case that accommodates the cell assembly, wherein the battery pack case includes: a lower frame; and a plurality of side frames extending from the lower frame in a substantially vertical direction, and the plurality of side frames may be configured as a combination of: a first side frame including a first flange and a second flange respectively protruding from the upper portion and the lower portion thereof toward the outside of the battery pack case; and a second side frame having one corner at least partially in contact with the first side frame and including a third flange protruding from the upper portion thereof toward the outside of the battery pack case. Other embodiments are possible.

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The present invention relates to a pouch case manufacturing device and a pouch case manufacturing method, and more specifically, relates to a pouch case manufacturing device and a pouch case manufacturing method, capable of alleviating an edge curling phenomenon of a pouch case caused by cup forming for insertion of an electrode assembly.According to one example of the present invention, a pouch case manufacturing method may be provided, which comprises: a cup forming step in which the cup is formed on a base material whose moving has stopped through a cup forming part installed on a moving route of the base material; an edge forming step in which both side edges of the base material in which the cup is formed are formed to be inclined upward relative to the lateral of the cup through an edge forming part installed at the rear end of the cup forming part; and a cutting step in which the base material having the cup and both side edges as inclined upward is cut to become the pouch case through a cutting part installed at the rear end of the edge forming part.

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Disclosed are a battery pack and a vehicle including the same. A battery pack according to an embodiment of the present disclosure may include: a plurality of battery modules in which a plurality of battery cells are stacked; a pack case configured to store the plurality of battery modules and having a venting unit formed therein; and a protective cover member coupled to the pack case at a portion where the venting unit is located to protect the venting unit.

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A battery case, according to the present invention, comprises: a pack frame configured to form a receiving space for a plurality of battery cells; a case lid configured to cover the receiving space; and a gasket interposed between the pack frame and the case lid. The gasket comprises: a plurality of coupling portions which are regions pressed by a fastening member, and at least one spacing portion which is located between two coupling portions which are adjacent to each other, wherein the thickness of a first point on the plurality of coupling portions may be different from the thickness of a second point on the at least one spacing portion.

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Provided is a battery device comprising: a plurality of pack housings including a first pack housing and a second pack housing, each of which accommodates a cell assembly including a plurality of battery cells, and which are stacked in one direction; and an upper cover which covers the upper portion of the pack housing disposed at the uppermost end among the plurality of pack housings, wherein: each of the first pack housing and the second pack housing comprises: a lower frame in which the cell assembly is seated; and a plurality of side frames connected to the lower frame to protect the side surface of the cell assembly: at least one of the plurality of side frames comprises: a body part disposed to face the side surface of the cell assembly; and a first upper flange and a first lower flange disposed at both ends of the body part in the height direction; and the first lower flange of the first pack housing and the first upper flange of the second pack housing are coupled to each other with the lower frame of the first pack housing therebetween.

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A secondary battery includes: an electrode assembly; a first exterior material enclosing the electrode assembly such that the electrode assembly is sealed; a second exterior material enclosing an outer surface of the first exterior material, wherein at least a portion of the second exterior material is unbonded to the first exterior material; and an electrode lead electrically connected to the electrode assembly and configured to extend from an interior to an exterior of the first exterior material and the second exterior material.

A battery pack according to an embodiment of this document may include a conversion unit that converts a total voltage output from a first battery unit and a second battery unit into an intermediate voltage, a switch circuit unit that switches an electrical connection between the conversion unit and the first battery unit and a load, and a controller that controls an operation of the switch circuit unit to charge the first battery unit and supply power to the load using the intermediate voltage.

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The present disclosure relates to an electrolyte for use in a lithium-sulfur battery, including a non-aqueous solvent, a first lithium salt, a second lithium salt, an inorganic nitrate and an organic nitrate, wherein the non-aqueous solvent includes an acyclic ether and a conjugated heterocyclic compound, to improve Coulombic efficiency and life of the lithium-sulfur battery.

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Provided is a battery pack that does not cause temperature deviations between battery cells depending on the location of the battery cells in the battery pack while directly cooling the battery cells by improving a conventional heat sink cooling method. A battery pack of the present disclosure includes a pack housing including a bottom plate, an outer frame, and a partition frame; and a plurality of battery cell assemblies accommodated in the pack housing, wherein inside the outer frame and the partition frame, a flow path where a cooling fluid is able to flow, and a distribution hole and a recovery hole communicating with the flow path are provided, and thus the cooling fluid is introduced toward the battery cell assembly to directly cool battery cells in the battery cell assembly.

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