LG Energy Solution Patente

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A battery module according to an embodiment of the present invention comprises: a battery cell stack in which a plurality of battery cells are stacked in one direction; and a temperature sensing unit disposed in the battery cell stack, wherein the temperature sensing unit comprises: a thermally conductive member having at least a portion in contact with the battery cells; and a temperature sensor coupled to the thermally conductive member to measure the temperature of the battery cells.

A battery system according to an embodiment of the present disclosure comprises: a battery cell that stores and supplies energy through charging and discharging, a sensing unit that collects status information of the battery cell, a cooling device that performs heat dissipation of the battery cell, and a BMS that controls the operation of the cooling device based on the status information collected from the sensing unit, wherein the cooling device includes a coolant for cooling the battery cell and a heat exchange unit for cooling the coolant, and wherein if it is determined that a fire has occurred in the battery cell, the heat exchange unit operates under a first condition or a second condition based on the status information.

A battery cell manufacturing device according to an embodiment of the present disclosure may include: a first pressure roll that rotates around a first rotation shaft, a second pressure roll that forms a rolling interval through which a substrate passes together with the first pressure roll, and rotates around a second rotation shaft, a first sensor that measures a thickness of a substrate, and a second sensor that measures a load of at least one shaft of the first rotation shaft connected to the first pressure roll and the second rotation shaft connected to the second pressure roll.

A battery diagnosis apparatus according to an embodiment disclosed herein includes a sensor configured to obtain a voltage value of each of battery cells and a processor configured to calculate a cell voltage deviation of each of the battery cells based on the voltage value and an average voltage value of the battery cells, calculate a moving average of the cell voltage deviation based on the cell voltage deviation, calculate a low-voltage period based on the moving average, and diagnose whether the battery cells are abnormal, based on the moving average and the low-voltage period.

The present disclosure relates to a solid state battery. Such a solid state battery comprises: a positive electrode; a negative electrode; and an electrolyte layer interposed between the positive electrode and the negative electrode, wherein the electrolyte layer comprises a polymer including a PEO (polyethylene oxide)-based copolymer having crosslinkable functional groups, at least some of which form crosslinks; a ceramic compound; and a polar compound, with the polar compound being dispersed or bound onto the polymer, and wherein the positive electrode comprises a positive electrode active material and a binder including a PEO-based copolymer having crosslinkable functional groups.

The present disclosure relates to an electrolyte and an all-solid-state battery comprising the same. The electrolyte includes: a polymer including a PEO (polyethylene oxide)-based polymer containing crosslinkable functional groups; a ceramic compound; and a polar compound, wherein at least some of the crosslinkable functional groups form crosslinks via a crosslinking agent, so that the polymer forms a three-dimensional network structure, wherein the polar compound is contained in the three-dimensional network structure or is bound onto the polymer chain, and wherein the content of the polar compound and the weight ratio of the crosslinking agent satisfy certain ranges.

A battery pack including a pack case having a lower and upper case defining an interior space and a plurality of cell units. Each cell unit includes battery cells stacked in a first direction. The plurality of cell units are located within the interior space. A cell side beam is located on a side of each cell unit. The lower case includes, a first and second frame, a base plate, a front cover, a rear cover, a center beam extending in the first direction, and a cross beam extending in a second direction perpendicular to the first direction. Each of the cell units is located within a space defined by the cross beam, the center beam, the side frames, and one of the front cover or the rear cover, and each of the cell side beams are coupled to the cross beam.

An input/output device according to an embodiment disclosed in this document includes a plurality of input/output ports respectively connected to a plurality of electronic devices; and a processor configured to control supply of power needed for operation of the plurality of electronic devices, and the processor may control electrical connections between the plurality of input/output ports so that power provided from a first electronic device connected to a first input/output port among the plurality of input/output ports is supplied to a second electronic device connected to a second input/output port.

The present disclosure relates to an electrolyte and an all-solid-state battery comprising the same. The electrolyte includes: a polymer mixture including a PEO (polyethylene oxide)-based polymer having crosslinkable functional groups, and a non-crosslinkable PEO-based polymer; a ceramic compound; and a polar compound, and exhibits excellent ionic conductivity despite its low content of the polar compound.

The present invention relates to a positive electrode active material including a lithium transition metal oxide having a nickel content of 70 mol% or greater with respect to all metals excluding lithium, wherein EELS analysis results of a particle surface satisfy Equation 1.

The present invention relates to a blended positive electrode material comprising a first positive electrode active material containing a first lithium transition metal oxide and a second positive electrode active material containing a second lithium transition metal oxide, wherein each of the first lithium transition metal oxide and the second lithium transition metal oxide has a nickel content of 70 mol% or greater with respect to of all metals excluding lithium, the first positive electrode active material has a D<50> greater than the second positive electrode active material, and EELS analysis results of particle surfaces of both the first positive electrode active material and the second positive electrode active material satisfy Equation 1, and a method for preparing the same.

A transfer release film according to the present invention comprises: a substrate; a release layer formed by applying a release composition including an ion conductive polymer resin and a solvent onto one surface of the substrate; and a lithium deposition layer formed by being deposited on the upper surface of the release layer. In the transfer release film according to the present invention having this configuration, the release layer is detached from the substrate and transferred to an electrode together with the lithium deposition layer, thereby serving as a protective layer of the lithium deposition layer.

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