LG Energy Solution Patente

According to an embodiment of the present disclosure, provided is a device for inspecting the dryness of an electrode, comprising: a transport unit that transports the electrode to an electrode drying zone, an irradiation unit including a collimating lens which is fixed in a state of being tilted by 10 to 20 degrees with respect to the direction perpendicular to the transport direction of the electrode at an upper part separated from the electrode, and an optical fiber that irradiates a light source through the collimating lens, a measurement unit including a spectrometer and a light source respectively connected to the irradiation unit, and a spectrometer hub connected to the spectrometer, and a control unit including a display device connected to the spectrometer hub, a method for inspecting the electrode dryness that predicts electrode dryness from the measured reflectance through the device for inspecting the dryness of an electrode, a method for manufacturing an electrode for a secondary battery to which the electrode dryness inspecting method is applied, and a method for manufacturing a secondary battery including the same.

The present disclosure provides an electrode assembly, a cylindrical battery, a battery pack and a vehicle. The electrode assembly is an electrode assembly in which a first electrode, a second electrode, and a separator interposed therebetween are wound around a winding axis to define a core and an outer circumference, wherein a winding start portion of the first electrode is positioned closer to the core than a winding start portion of the second electrode and extends further in a direction opposite to a winding direction, wherein a winding end portion of the first electrode is positioned closer to the outer circumference than a winding end portion of the second electrode and extends further in the winding direction, and wherein in a cross-section of the electrode assembly perpendicular to the winding axis, the winding end portion of the second electrode is included in a fan-shaped region having a circumferential angle corresponding to an angle of the winding direction between the winding start portion of the first electrode and the winding start portion of the second electrode.

A metal particle monitoring device according to an embodiment of the present disclosure may include: a piping through which a fluid passes, a first electrostatic capacity sensor that detects metal particles in the fluid passing through the piping, a metal removal unit that is disposed on the downstream side of the first sensor and removes prescribed metal particles in the fluid, and a second electrostatic capacity sensor that is disposed on the downstream side of the metal removal unit, and detects metal particles after the prescribed metal particles are removed in the fluid.

Disclosed is a battery pack, which includes a cell array structure including a plurality of battery cells and a plurality of cooling tubes provided between the plurality of battery cells; a pack case configured to accommodate the cell array structure; and a cooling pipe unit installed in communication with a cooling line for circulation of a cooling medium and configured to connect the plurality of cooling tubes in one direction within the pack case along a stacking direction of the plurality of cooling tubes.

The present invention relates to a positive electrode having a positive electrode composite layer, including a positive electrode active material, carbon nanotubes, and carbon black, disposed on a current collector, wherein a ratio (BET<CB>)/(BET<CNT>) of a BET surface area BET<CB> of the carbon black to a BET surface area BET<CNT> of the carbon nanotubes is greater than 1.0 and 3.4 or less, and the carbon nanotubes have a number cumulative average particle size D<50>CNT of 0.9 µm to 2.0 um, and a positional relationship between the carbon nanotubes and the carbon black within the positive electrode and connectivity with active material particles are excellent, and thus both ionic conductivity and electrical conductivity are improved, thereby providing a lithium secondary battery offering superior resistance, improved lifespan, and price competitiveness.

The present invention relates to a positive electrode having a positive electrode composite layer, including a single particle-type positive electrode active material and a conductive material including a plate-like carbon material, disposed on a current collector, and having a packing index PI of 0.1 to 3.6, where the PI is derived from factors including a volume cumulative average particle size D₅₀ of the single particle-type positive electrode active material, a crystallite size L_c in a c-axis direction of the plate-like carbon material, and a specific surface area S_c of the plate-like carbon material, and the positive electrode exhibits high rolling density without damage to the positive electrode active material and may thus provide a lithium secondary battery having excellent energy density.

According to an embodiment disclosed herein, there may be provided a server, which includes a communication circuit, a memory, and a processor operatively connected to the communication circuit and the memory, wherein the processor may be configured to acquire history data related to battery charging of users and information about current driving of a target user, extract features related to charging factors of the users from the history data, set a criterion for determining habituality related to the factor based on the feature, determine habituality of the target user based on the feature of the target user and the criterion, and provide guide information about the habituality of the target user based on at least one of the habituality and history data of the target user and the information about the current driving of the target user.

The present invention relates to a secondary battery which is excellent in impact resistance, and the secondary battery according to the present invention includes an electrode assembly having a positive electrode, a negative electrode, and a separator disposed between the positive electrode and the negative electrode; an electrolyte; and a battery case accommodating the electrode assembly and the electrolyte, and the secondary battery satisfies Expression (1) below. V p + 0.1 × C / D e ≤ V e ≤ V p + 0.15 × C / D e <img class="EMIRef" id="5f7d3859-1810-4ebf-8db0-3446f57c5414-ia01" /> In Expression (1) above, V<e> is a total volume (mL) of the electrolyte included in the lithium secondary battery, Vp is a total pore volume (mL) of the electrode assembly, C is a battery capacity (Ah), and D<e> is an electrolyte density (g/mL).

According to some embodiments disclosed in this document, a charging device includes a communication module configured to receive battery data about a battery of a vehicle, the battery data being collected by a collection device from a data port of the vehicle, a power supply module configured to supply charging power to the battery based on a charging setting, and a controller configured to derive management data about the battery based on the battery data and the charging setting.

Disclosed herein relates to a method of manufacturing a secondary battery including: stacking a plurality of unit cells in a first direction to form a stack-type electrode assembly; coupling a multifunctional terminal block (MTB) to both ends of the stack-type electrode assembly extending in a second direction perpendicular to the first direction; attaching a laminate sheet to the MTB to enclose the stack-type electrode assembly; injecting an electrolyte into the stack-type electrode assembly enclosed by the laminate sheet; and sealing the laminate sheet to form a cell case, wherein the MTB includes: a MTB housing; a busbar provided within the MTB housing and electrically connected to the stack-type electrode assembly; and an electrode terminal part exposed to an outside of the MTB housing and electrically connected to the busbar.

The present invention provides an isostatic pressurization method for an electrode assembly comprising a positive electrode comprising a positive electrode current collector and a positive electrode active material layer, a negative electrode comprising a negative electrode current collector and a negative electrode active material layer, and a solid electrolyte layer, wherein the solid electrolyte layer is laminated to bond one side to the negative electrode active material layer, and a positive electrode is laminated to bond the other side of the solid electrolyte layer to the positive electrode active material layer, wherein the electrode assembly has a stacked form in which the negative electrode protrudes beyond the end of the positive electrode thereby forming a step,wherein the isostatic pressurization is performed with a protective member in the form of a band extending vertically from the outer circumferential surface of the negative electrode end protruding from the electrode assembly to the positive electrode, wherein a space formed by the step is located between the protective member and the positive electrode; and an all-solid-state battery comprising the electrode assembly and the protective member.

The present disclosure relates to a battery cell tray, and more specifically, to a battery cell tray for storing and transferring loaded battery cells. A battery cell tray according to Embodiment 1 of the present disclosure includes a cell fixing unit to which battery cells are fixed; a position measuring unit that measures the position of each of the battery cells inserted into the cell fixing unit; and a processor that calculates the fixed position of each of the battery cells fixed to the cell fixing unit through data measured by the position measuring unit, thereby being capable of automatically measuring the positions of battery cells inserted into the cell fixing unit to determine the fixed positions at which the battery cells are fixed within the cell fixing unit.

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The present specification discloses a current collector. The current collector comprises a polymer layer exhibiting a so-called PTC (Positive Temperature Coefficient) effect. The polymer layer exhibits the PTC effect very precisely responding to a temperature and an external voltage. The polymer layer can quickly switch between a state exhibiting excellent electrical properties such as low resistance and a state exhibiting insulator properties due to increased resistance at a necessary time. The current collector is applied to various electronic/electrical devices, whereby in a normal state, it does not affect driving of the devices, and the like through excellent electrical properties, and in an abnormal state, it is possible to ensure stability through a rapid resistance increase.

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