LG Energy Solution Patente

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Provided is a battery SoH management method for a battery management system, comprising the steps of: checking the SOH of each of a plurality of battery modules included in a battery pack; on the basis of at least some of the respective SoHs of the plurality of battery modules, checking one or more first battery modules, which are at least some of the plurality of battery modules; and rechecking the SoH of the one or more first battery modules by considering at least a portion of the margin capacity of the one or more first battery modules as an available capacity.

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A battery management device according to an embodiment disclosed in this document includes an intermediate signal generation unit that generate an intermediate signal related to operation control of a contactor corresponding to each of a first battery pack and a second battery pack connected in parallel with the first battery pack and a final signal generation unit that generates a final signal for controlling an electrical connection of the contactor corresponding to the second battery pack based on a comparison result between a link voltage, which is a voltage applied to nodes to which the first battery pack and the second battery pack are connected by the first battery pack, and a pack voltage applied to a positive contactor corresponding to the second battery pack, and the intermediate signal.

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The present disclosure relates to a battery module including: a cell assembly including a plurality of battery cells; a bus-bar frame provided on at least one side of the cell assembly; a module case including a body frame configured to cover some sides of the cell assembly, and an end frame coupled to the body frame and configured to cover the bus-bar frame; and a blocking member provided inside a joint between the body frame and the end frame, and configured to cover a portion of the cell assembly.

A battery according to the present invention comprises: an electrode assembly including a plurality of stacked electrodes, a tab array formed by stacking a plurality of electrode tabs respectively extending from the plurality of electrodes, and a cover member covering the tab array; and an electrode lead electrically connected to the tab array. The cover member may include: an electrode cover part covering at least a partial surface of an electrode arranged at the outermost side among the plurality of stacked electrodes; and a tab cover part extending from the electrode cover part, arranged to face the tab array, and electrically connected to the electrode lead.

The present invention relates to an apparatus for manufacturing a secondary battery and a method for manufacturing a secondary battery using the same, and more particularly, to an apparatus for manufacturing a secondary battery, which is capable of quickly and efficiently removing a gas generated inside a cell in an activation process of charging and discharging the cell, solving a problem of a space lack in an facility for manufacturing the secondary battery, and reducing cost of the manufacturing facility, and a method for manufacturing a secondary battery using the same.

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 directly fastened to the pack case and at least a portion thereof melts or burns when temperature rises.

Disclosed herein relates to an electrode slot die coater may including: n (where n is an integer between 2 and 5) blocks arranged adjacent to each other; a coating shim positioned at one or more of the interfaces between the blocks, and having an insulating solution discharge flow path formed therein; and a variable unit for adjusting the opening degree of the insulating solution discharge flow path. Some embodiments of the present disclosure enable simultaneous application of electrode slurry and insulating solution onto a current collector while allowing for simple and precise control of the thickness of the insulating solution applied to the current collector.

A charging condition setting device according to an embodiment disclosed herein may include an extraction unit configured to extract a first critical charging condition for preventing lithium precipitation of a battery at a specified temperature, a calculation unit configured to perform a specified number of charges on a first target battery at the specified temperature based on the first critical charging condition and then calculate a first deterioration degree of the first target battery, and a diagnosis unit configured to diagnose the first critical charging condition based on the calculated first deterioration degree.

The present invention relates to an electrode assembly excellent in insulation and a secondary battery including the same, and the electrode assembly according to the present invention includes a positive electrode, a negative electrode, and a separator disposed between the positive electrode and the negative electrode, satisfies Expression (1) below, and has a thickness of 10 mm or greater. A × B + 6 B ≥ 90 <img class="EMIRef" id="f98f24a3-2dc1-40cb-a0a0-a576a7029f44-ia01" /> In Expression (1) above, A is a ratio of an overall length to an overall width of the electrode assembly, and B is a thickness value of the separator measured in µm.

The present invention provides a manufacturing method of a battery module, including: a frame having a lower plate provided with a first hole; a battery cell accommodated in the frame; and a resin applied and cured between the battery cell and the lower plate, the manufacturing method including: a step of attaching a resin tape; a step of injecting uncured resin; and a step of removing the resin tape, wherein the resin tape includes a reinforcement portion having a toughness along the first direction stronger than other portions of the resin tape.

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 having a plurality of battery cells stacked therein; a pack case configured to store the plurality of battery modules; and a fastening member configured to fasten the pack case, wherein at least a portion of the fastening member is inserted and fixed into the pack case, and at least a portion thereof melts or burns when temperature rises.

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Disclosed is an apparatus and method of evaluating an electrolyte impregnation level of a secondary battery. Specifically, electrolyte is injected into a case of the 3-electrode cell, and the 3-electrode cell is aged for a first time. Charging of the 3-electrode cell is initiated, and a first SOC voltage between the reference terminal and the positive electrode terminal at the first SOC is obtained. The 3-electrode cell is aged for 2 hours, and then an aging completion voltage between the reference terminal and the positive electrode terminal is obtained. Charging of the 3-electrode cell is resumed, and a second SOC voltage between the reference terminal and the positive electrode terminal at a second SOC is obtained. At least one of the first SOC voltage, a voltage difference between the first SOC voltage and the aging completion voltage, and a voltage difference between the first SOC voltage and the second SOC voltage is determined as an impregnation evaluation voltage. An electrolyte impregnation level corresponding to the impregnation evaluation voltage is identified from reference voltage information for a plurality of predefined electrolyte impregnation levels, and the identified electrolyte impregnation level is determined as an electrolyte impregnation level of the 3-electrode cell.

The technical idea of the present invention provides a battery manufacturing apparatus comprising: a sealing device configured to bond a part of a first separator to a part of a second separator to form a separator assembly having a sealed area; a first inspection device configured to detect a first distance between the sealed area of the separator assembly and a first electrode attached to the separator assembly; a cutting device configured to cut the separator assembly so as to separate, from the separator assembly, a first unit separator assembly to which the first electrode is attached; and a second inspection device configured to detect a second distance between the first electrode and an edge of the first unit separator assembly.

Disclosed are a pouch battery cell sealing apparatus with easy position alignment and a pouch battery cell sealing method using the same, and more particularly a pouch battery cell sealing apparatus including a seating jig configured to receive a pouch battery cell having an electrode lead and an insulating film located in a sealed portion of a pouch case seated thereon, a punching portion configured to form a guide hole in each of the sealed portion, the electrode lead, and the insulating film, and a pair of sealing tools configured to seal the sealed portion, wherein the sealing tool has a guide protrusion on a surface thereof configured to face the sealed portion of the pouch case, and a pouch battery cell sealing method using the same.

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