LG Energy Solution Patente

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The present invention relates to a battery cell aging device including a main body having a hollow portion formed therein for housing a battery cell; a heater that is positioned on an inner surface of or inside the main body and adjusts a temperature of the battery cell; and a sensor that measures the temperature of the battery cell while being in contact with a portion of the battery cell.

The present invention relates to a positive electrode active material including nickel among total metals excluding lithium in an amount of 80 mol% or more, and at least one doping element, wherein the at least one doping element has an average value of a first doping uniformity index, which is defined by Equation 1 and measured for each individual doping element, of 16% or less, andhaving a particle strength of 121 MPa or more. Firstdopinguniformityindex=NSD/Navgwherein, in Equation 1, [N_SD] is a standard deviation val ue of a molar ratio of the individual doping element to manga nese (Mn) in the entire positive electrode active material, a nd [N_avg] is an average value of the molar ratio of the indivi dual doping element to the Mn in the entire positive electrod e active material.

The present specification relates to a negative electrode active material, and a negative electrode and a secondary battery comprising same. According to an embodiment of the present invention, provided is a negative electrode active material comprising a silicon-based active material and a coating layer provided thereon, wherein the silicon-based active material comprises at least one selected from the group consisting of pure Si, SiOx (0<x<2) and Si/C, and the coating layer comprises an inorganic flame retardant.

Disclosed is a battery pack. The battery pack include a case providing a space therein; a battery cell located inside the case; and an air bag provided on an outer surface of the case and configured to communicate with the inner space of the case.

A battery system according to an embodiment of the present invention may comprise: a battery; a circuit breaker disposed on a charging/discharging line of the battery; and a battery management device for managing the battery and controlling the operation of the circuit breaker. Here, the battery management device may comprise: a control unit; a power supply unit which receives power from the battery through a first power supply line and supplies power to the control unit; and a power maintenance unit which receives power from the battery through a second power supply line and supplies temporary power to the power supply unit in a state in which the circuit breaker is open.

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The present disclosure relates to a current collector, a secondary battery including the same and a manufacturing method thereof. The current collector according to the present disclosure includes a first current collecting portion, a second current collecting portion, and a connection portion. The first current collecting portion may be welded to a plurality of first electrode tabs. The second current collecting portion may be electrically connected to the first current collecting portion, and may be welded to a plurality of second electrode tabs. The connection portion may have one end to which the first current collecting portion is connected and the other end to which the second current collecting portion is connected, and may include a current collecting protrusion. The current collecting protrusion may be made of a different material from the connection portion.

The present invention relates to a method of removing aluminum from a waste cathode material, the method including step (a) of pulverizing a waste cathode coated with a cathode active material layer containing a cathode material with an olivine structure on a current collector; step (b) of obtaining the cathode active material layer as a powder by sieving the pulverized waste cathode through a 140- to 400-mesh sieve; step (c) of forming a leachate and a leaching residue by leaching the obtained cathode active material layer powder in an alkaline aqueous solution having a molar concentration of 0.06 to 0.22 mol/L; and step (d) of separating the leachate and the leaching residue, wherein in step (c), the solid-to-liquid ratio of the cathode active material layer powder to the alkaline aqueous solution is 1 g/7 ml to 1 g/35 ml. According to the method of removing aluminum from a waste cathode material of the present invention, by forming a leachate and a leaching residue by leaching, in a predetermined alkaline aqueous solution, a cathode material powder having an olivine structure obtained from a cathode of a waste lithium-ion battery and separating the leachate and the leaching residue, lithium loss from the cathode material powder having an olivine structure may be minimized, and the aluminum removal rate may be increased, thereby greatly increasing the purity of the recovered lithium.

The present disclosure provides a method for wetting an electrolyte into an electrode for a lithium secondary battery, the method comprising fabricating and storing a roll assembly in a state where a long sheet-type electrode and a liquid electrolyte-wetted substrate are wound together, a method for manufacturing a lithium secondary battery using an electrode fabricated by the method, and a lithium secondary battery manufactured as described above.

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A battery module according to an embodiment of the present invention includes a cell assembly including a plurality of battery cells, a module case configured to house the cell assembly in an internal space, a frame cover positioned on an upper portion of the module case to cover the cell assembly and having at least one venting hole, and a support plate configured to form a predetermined space with the frame cover.

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The present disclosure relates to a separator for an electrochemical device and an electrochemical device including the same, and more particularly, to a separator for an electrochemical device, wherein a coating layer provided on a porous polymer substrate includes inorganic particles, and the metal oxide in the inorganic particles has a controlled grain size, so that gas generation during the operation of an electrochemical device may be reduced, thereby improving the explosion safety of the electrochemical device, and an electrochemical device including the same.

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