LG Energy Solution Patente

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A battery pack according to an embodiment disclosed in this document includes a first module including a plurality of battery cells, a second module connected in series to the first module and disposed in a first direction from the first module, and a third module connected in series to the second module and in the first direction from the second module, wherein the first module, the second module and the third module have capacities different from each other.

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Embodiments provide a battery pack. The battery pack includes: a pack housing including a base plate and side walls; a plurality of battery cell assemblies provided on the base plate and each including a plurality of battery cells and an integrated circuit assembly that is coupled to the plurality of battery cells and includes a first antenna; a battery management system (BMS) including a second antenna; and a lid coupled to the side walls, in which the lid includes a waveguide overlapping the first antenna of each of the plurality of battery cell assemblies and the second antenna and further includes a base part and an ascending part farther spaced apart from the base plate than the base part, and the waveguide is on the ascending part.

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The present disclosure relates to a cylindrical secondary battery including a cylindrical can configured to accommodate an electrode assembly inside, and having a beading portion protruded inwards at a part located above the accommodated electrode assembly; and a top cap having a disc shape and mounted on the beading portion of the can, wherein in a state in which the top cap is mounted on the beading portion, an upper end of the can is bent to form a crimping portion so as to cover an upper surface of the top cap, and wherein the crimping portion has a notch cut to a preset depth to divide the crimping portion into a plurality of segments. The present disclosure having the above-described configuration has the notch in the crimping portion to reduce the thickness, so as to induce a rupture along the notched part when the pressure in the can increases. Accordingly, as the crimping portion may be deformed by lower pressure, the top cap may be separated from the can more quickly. Therefore, it may be possible to prevent sidewall rupture of the can.

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A battery managing apparatus according to an embodiment of the present disclosure includes a profile acquisition unit configured to acquire a first profile for each of a plurality of batteries included in a battery pack; and a diagnosis unit configured to calculate a target value based on a capacity value for each of the plurality of batteries as a diagnostic factor on a basis of a first target point included in each of a plurality of first profiles, generate a distribution profile indicating a correspondence relationship between a plurality of calculated target values and the number of each of the plurality of target values, determine whether the distribution profile satisfies a predetermined condition, and diagnose a state of the battery pack according to a determination result.

A battery managing apparatus according to an embodiment of the present disclosure includes a profile acquisition unit configured to acquire a first profile for each of a plurality of batteries included in a battery pack; and a diagnosis unit configured to calculate a target ratio from each of the plurality of first profiles, calculate each target value as a diagnostic factor based on a plurality of calculated target ratios, generate a distribution profile indicating a correspondence relationship between a plurality of calculated target values and the number of each of the plurality of target values, determine whether the distribution profile satisfies a predetermined condition, and diagnose a state of the battery pack according to a determination result.

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A battery managing apparatus according to an embodiment of the present disclosure includes a profile acquisition unit configured to acquire a first profile for each of a plurality of batteries included in a battery pack; and a diagnosis unit configured to calculate a target ratio from each of the plurality of first profiles, calculate each target value as a diagnostic factor based on a plurality of calculated target ratios, generate a distribution profile indicating a correspondence relationship between a plurality of calculated target values and the number of each of the plurality of target values, determine whether the distribution profile satisfies a predetermined condition, and diagnose a state of the battery pack according to a determination result.

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An apparatus for diagnosing a battery according to the present disclosure includes a profile obtaining unit configured to obtain a differential profile representing a corresponding relationship between a voltage and a differential capacity of the battery; and a control unit configured to determine a first target peak among a plurality of peaks included in the differential profile, determine a voltage pattern of the first target peak based on a voltage profile representing a time series change of a voltage of the first target peak, and diagnose a state of the battery according to the determined voltage pattern.

A cell module assembly according to an embodiment of the present disclosure comprises: a battery cell stack in which a plurality of battery cells are stacked; a busbar housing disposed on a surface toward which the electrode lead of the battery cells faces; an ICB (Inter Connection Board) including a printed circuit board for transmitting data between the battery cells and a BMS (Battery Management System); and a sensing cable that electrically connects between the ICB and the BMS, wherein the busbar housing comprises at least one sensing cable fixing unit having a shape that protrudes from an outer surface of the busbar housing and is extended in a curved state so as to fix the sensing cable, and wherein the sensing cable is inserted and fixed between the outer surface of the busbar housing and the sensing cable fixing unit.

A cell module assembly according an embodiment of the present disclosure may comprise a battery cell stack in which a plurality of battery cells are stacked; a busbar housing disposed on a surface that faces the electrode leads of the battery cells, an ICB (Inter Connection Board) that is disposed on the busbar housing, and includes a printed circuit board having at least one element for transmitting data between the battery cells and a BMS (Battery Management System), and a sensing cable connector to which a sensing cable is coupled, and a connector cover that covers the outer surfaces of the sensing cable connector and a connector pin of the sensing cable.

A cell module assembly according an embodiment of the present disclosure may comprise a battery cell stack in which a plurality of battery cells are stacked; and a barrier unit disposed between at least one of the plurality of battery cells and at least one of the other battery cells, wherein the barrier unit comprises a plurality of support plates and a first buffer member interposed between adjacent support plates.

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Disclosed are a battery management system and a battery management method. The battery management system includes: a battery monitoring IC (BMIC) for measuring a state of a battery; a processor for controlling an overall operation of the battery management system; a transceiver for recognizing the measured state of the battery and delivering the recognized state of the battery to the processor; and a power management circuit for providing power to the processor, in which the processor includes a first terminal (VDDS_PowerControl) that outputs a first signal that controls a first transistor, and provides a VDDS signal for determining an operation of a low-power mode by controlling the first transistor by using the first signal.

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According to some embodiments, a battery inspection system includes a transport device configured to transport a battery cell, an inspection device configured to generate a plurality of inspection images for the battery cell, and a control device configured to determine a correction value for an appearance dimension of the battery cell based on the plurality of inspection images and determine whether the battery cell is defective based on the correction value.