LG Energy Solution Patente

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Disclosed is a battery pack which includes a plurality of battery modules; a pack case having an inner space configured to accommodate the plurality of battery modules and a wall portion configured to surround the battery modules; and at least one fire-resistance barrier disposed between the battery modules to partition the inner space and detachably assembled to the wall portion, wherein the fire-resistance barrier includes a body portion made of a fire-resistant material, and an edge portion made of a rigid material and configured to surround an outer periphery of the body portion.

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The present disclosure may provide an electrode assembly in which a positive electrode, a negative electrode, and a separator interposed therebetween are wound, wherein at least one of the positive electrode and the negative electrode includes an uncoated portion at a long side end, and a winding turn portion of the uncoated portion is provided at one end of the electrode assembly, wherein the winding turn portion includes a bending region including a plurality of uncoated portion layers configured to be bent by pressure to form a bent surface.

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According to an embodiment disclosed herein, a data management device may include a master device, a main control unit, and an auxiliary control unit, wherein the master device may transmit a control signal including a network policy, a control command, or any combination thereof about a communication protocol to the auxiliary control unit, and the auxiliary control unit may be configured to generate a data frame based on the control signal, determine a transmission method and a transmission path, and then transmit the data frame to the main control unit corresponding to the data frame.

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Disclosed is a battery pack which includes a plurality of battery modules; a pack case having an inner space configured to accommodate the plurality of battery modules and a wall portion configured to surround the battery modules; and at least one fire-resistance barrier disposed between the battery modules to partition the inner space and detachably assembled to the wall portion, wherein the fire-resistance barrier includes an air layer and a fire-resistance pad layer made of a fire-resistance material therein.

The technical idea of the present invention provides an apparatus comprising: a battery pack; and a mounting frame provided on the outside of the battery pack, wherein the battery pack includes: a pack frame mounted on the mounting frame; a cell assembly, which is provided in the inner space of the pack frame and which includes a battery cell; and a first buffer pad which is attached to the outer surface of the pack frame so as to be in contact with the mounting frame, and which includes a thermally expandable material.

A printed circuit board of a cell module controller configured to monitor a battery module is coated with a coating solution, except for an exposed area including a first point and a second point. A leakage detection circuit is formed on the printed circuit board, and includes at least one resistor connected to the first point and the second point via a line. A battery monitoring integrated circuit is formed on the printed circuit board, and receives a detection voltage at a predetermined pin, and the detection voltage is determined based on a resistance between the first point and the second point determined based on whether there is a leakage within the battery pack, and the at least one resistor.

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An apparatus for diagnosing a battery according to an embodiment of the present disclosure comprises a profile obtaining unit configured to obtain a charging profile representing a voltage change of a battery in a charging process according to a charging protocol in which a corresponding relationship between a charging C-RATE and a maximum allowable SOC is preset; and a control unit configured to calculate a voltage change amount of the battery at a charging start point of 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.

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According to an embodiment disclosed in this document, a signal processing device may include a main control unit, an auxiliary control unit electrically connected to the main control unit, and an end device electrically connected to the auxiliary control unit, in which the main control unit may transmit a wake-up signal to the auxiliary control unit when power is supplied, and the auxiliary control unit may bypass the wake-up signal and transmit the wake-up signal to the end device.

A method for operating a battery management device, according to an embodiment of the present invention, may comprise the steps of: reading, when booting the battery management device, update information of battery management system (BMS) software-related setting values among BMS software-related data stored in a non-volatile memory of the battery management device; comparing the update information of the BMS software-related setting values with update-related values defined in the BMS software; and determining that the BMS is inoperable if the update information of the BMS software-related setting values does not match the update-related values defined in the software.

Disclosed is a battery module. The battery module includes a frame providing a space therein; a plurality of battery cells positioned inside the frame; and a barrier configured to cover at least one of the plurality of battery cells, the barrier including an insulation member having a plurality of holes and a case accommodating the insulation member and having an interior configured as a vacuum.

The present disclosure relates to a method of manufacturing a battery pack comprising a main case, a first case, and a second case, and the method may include a first step of inserting the first case in a sliding manner along a first direction into the main case in which at least a portion of both sides, facing the first direction and a second direction opposite the first direction, is open to couple the first case to the main case, a second step of coupling a BMS assembly to the battery cell assembly so as to be electrically connected to the battery cell assembly, a third step of inserting the battery cell assembly in a sliding manner into the main case along the first direction such that one surface of the battery cell assembly comes into contact with one surface of the first case, and a fourth step of coupling the second case to the main case such that one surface of the battery cell assembly comes into contact with one surface of the second case.

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A battery pack according to an embodiment of the present disclosure comprises: a battery module including a battery cell stack in which a plurality of battery cells including electrode leads are stacked, and a module frame in which the battery cell stack is housed; a pack frame which houses the module frame in a state that the battery cell stack is housed, and has an opened upper part; a pack cover covering the opened upper part of the pack frame; and a cross member that sets the position of the module frame in a state that the battery cell stack is housed. At least one flange for coupling with the cross member is provided on a side surface of the module frame.

Embodiments of the present disclosure provide a battery pack. The battery pack includes a plurality of battery cells arranged in a first direction, a plurality of cooling fins between the plurality of battery cells, a plurality of pads between the plurality of battery cells, a first integrated circuit assembly configured to be electrically connected to the plurality of battery cells, a second integrated circuit assembly configured to be electrically connected to the plurality of battery cells and spaced apart from the first integrated circuit assembly in a second direction perpendicular to the first direction, and a flat flexible cable (FFC) assembly between the first and second integrated circuit assemblies, and the FFC assembly includes an intermediate part overlapping the plurality of battery cells in the first direction.

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According to an embodiment disclosed herein, a data management device may include a main control unit, an auxiliary control unit electrically connected to the main control unit, and an end device, and the auxiliary control unit may receive data from at least one of the main control unit, the end device, or any combination thereof, group the data based on a specified reference and generate at least one frame, and transmit the at least one frame to a target device identified based on the specified reference.

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Disclosed is a battery pack. The battery pack includes a case providing an inner space and having a pack cover; a battery cell positioned inside the case; a partition wall configured to partition the inner space of the case; an adhesive member disposed on the partition wall; and a bolt having a head attached to the adhesive member and a body penetrating the pack cover.

A charging protocol generating apparatus according to an embodiment of the present disclosure includes a protocol obtaining unit configured to obtain a charging protocol representing a corresponding relationship between a charging c-rate and a charging limit SOC of a battery; a profile obtaining unit configured to obtain a resistance profile based on a reference profile representing a corresponding relationship between SOC and resistance of the battery in a charging process according to the charging c-rate and a criterion profile corresponding to a preset criterion c-rate; and a control unit configured to correct the charging protocol by changing the charging c-rate of the charging protocol based on the resistance profile.

A diagnosis device according to an embodiment of this document includes a comparator configured to generate an output value based on a result of comparing values input to an inverting terminal and a non-inverting terminal, a first resistor of which a first end is connected to a relay and of which a second end is connected to the inverting terminal of the comparator, a second resistor of which a first end is connected to the relay and of which a second end is connected to the non-inverting terminal of the comparator, and having a resistance value such that when the relay is short-circuited, a voltage applied to the non-inverting terminal becomes greater than a voltage applied to the inverting terminal, and one or more processors configured to control an operation of the relay through a control signal that controls the operation of the relay and diagnose a state of the relay based on an output value of the comparator circuit unit according to an operation of the relay.

A positive electrode of a secondary battery includes: a positive electrode active material layer, which in turn includes a positive electrode active material, a conductive material, a binder, and a positive electrode additive. The positive electrode additive includes substituents with a cyclic sulfonic ester (sultone) or cyclic sulfate structure, so that the oxygen release from a positive electrode active material is suppressed, which improves the structural stability of the positive electrode active material.

A charging protocol generating apparatus according to an embodiment of the present disclosure includes a profile obtaining unit configured to obtain a charging profile of a battery charged by repeating a charging period and a rest period at a preset charging C-RATE; and a control unit configured to generate a resistance profile representing a corresponding relationship between a resistance of the plurality of rest periods and SOC (State of Charge), determine a maximum allowable SOC corresponding to the charging C-RATE based on a resistance pattern of a target SOC section of the generated resistance profile, and generate a charging protocol including a corresponding relationship between the charging C-RATE and the maximum allowable SOC.

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