LG Energy Solution Patente

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A battery pack for delaying or preventing thermal propagation according to an embodiment of the present invention comprises: at least one battery module; a pack housing configured to accommodate the battery module(s); and a module gas venting cover coupled to each battery module to guide the discharge of gas generated therein. A battery pack according to an embodiment of the present invention has the effect of delaying or preventing thermal propagation between modules.

Disclosed are a cooling manifold for battery cell formation processes capable of uniformly supplying a coolant for battery cell cooling to a pressing plate of a battery cell pressing and cooling system capable of reducing the process time required when cooling and pressing a pouch battery cell during an activation process of the pouch battery cell and measuring the voltage of the battery cell at the same time, thereby dramatically shortening the process time, and a battery cell pressing and cooling apparatus including the same.

A battery pack according to one embodiment of the present invention comprises: a plurality of battery cell units; a pack case for accommodating the plurality of battery cell units; a first thermal resin applied to at least a portion of a first surface of the pack case facing the plurality of battery cell units; a second thermal resin applied to at least a portion of a second surface of the plurality of battery cell units facing the pack case; and at least one of a phase change material and a third thermal resin applied to at least a portion of a third surface of the plurality of battery cell units opposite the second surface. (Representative Drawing: Fig. 7)

An electrode-tab inspection device according to an embodiment of the present invention may comprise: at least one processor; and a memory for storing at least one instruction that is executed through the at least one processor. Here, the at least one instruction may include: an instruction to acquire computed tomography (CT) data of a battery from a CT device; an instruction to derive, from the CT data, an electrode-tab region in which a predefined upper portion of an electrode tab is located, based on a height direction of the battery; an instruction to extract, from the CT data, a vertical cross-sectional image of the electrode tab by using a horizontal cross-sectional image within the electrode-tab region; and an instruction to determine whether the electrode tab is defective by using the vertical cross-sectional image of the electrode tab.

A device for predicting a battery capacity, according to one embodiment of the present invention, may comprise: at least one processor; and a memory for storing at least one instruction executed using the at least one processor. The at least one instruction can include the instructions of: collecting formation process data including a state value for respective batteries measured during a battery formation process; calculating a plurality of predefined statistical values by using the formation process data; and inputting the statistical values to a pre-trained prediction model, and predicting a battery capacity at a specific temperature by using a prediction value output by the prediction model.

A battery device according to various embodiments comprises: a battery assembly; a housing for accommodating the battery assembly; a plurality of flow paths which are inside the housing and disposed between the battery assembly and an inner wall of the housing and along which flows a cooling material for reducing heat generated from the battery assembly; and a connection device for fluidly connecting at least some of the plurality of flow paths, wherein the connection device may comprise a first connection part and a second connection part which is connected to the first connection part and coupled thereto to be movable relative to the first connection part inside the housing.

An apparatus for controlling a battery according to an embodiment of the present invention controls a battery system in which a plurality of battery packs are connected in parallel, and may comprise: a self discharging circuit unit connected in parallel with the plurality of battery packs; and a control unit that measures a current flowing through each battery pack when each battery pack is started according to a use request for the plurality of battery packs, and controls the self discharging circuit unit to be turned on according to the current flowing through the battery pack.

According to an embodiment disclosed in this document, there is provided a battery diagnosis device including an interface for acquiring voltage data representing a voltage of a battery cell relative to a capacity of the battery cell and at least one processor, in which the at least one processor is configured to identify first voltage change data of the battery cell acquired in a middle of life (MOL) state, identify a first data range related to a positive electrode of the battery cell in the first voltage change data, transform first sub-data corresponding to the first data range into first linear data in first voltage data corresponding to the first voltage change data based on linear regression, and acquire a positive electrode loss value related to damage to the positive electrode based on the first linear data and diagnose a state of the battery cell based on the positive electrode loss value.

Disclosed is a battery pack. The battery pack includes a base plate; a battery cell arranged on the base plate; a side wall installed on the base plate and having a venting hole positioned higher than the battery cell; and a venting device installed in the venting hole.

The present disclosure relates to a positive electrode for an all-solid-state battery and an all-solid-state battery including the same. More specifically, by using two types of positive electrode active materials having different nickel contents and particle sizes (D50) as positive electrode active materials, the porosity of the positive electrode is reduced, and the life deterioration phenomenon due to shrinkage and expansion of the positive electrode material included in the positive electrode is improved, thereby exhibiting an effect of improving the energy density and life characteristics of the all-solid-state battery.

A battery module according to an embodiment of the present disclosure may include a plurality of cell assemblies including one or more battery cells and a discharge area configured to discharge gas generated within the battery cell, and a plurality of covers individually disposed for the respective cell assemblies and configured to cover the discharge area.

The present disclosure relates to a secondary battery and a battery pack including the same, and the secondary battery according to an aspect of the present disclosure includes an electrode assembly including a plurality of electrodes and a separator stacked on each other; an electrode tab extending from the electrode; a case accommodating the electrode assembly and having a window in an outer surface; and an electrode lead disposed in the case, wherein at least a part of the electrode lead is exposed through the window to conduct electricity from the electrode assembly to outside, and the electrode lead may include a lead portion extending in a stack direction of the plurality of electrodes at one side of the electrode assembly; and a coupling portion extending from the lead portion and to which the electrode tab is coupled.

Disclosed are a pouch-shaped battery cell case machining apparatus and a machining method using the same, and more particularly a pouch-shaped battery cell case machining apparatus including a die unit configured to allow a battery cell case including a pocket portion and an extension portion provided outside the pocket portion to be seated on the die unit, a gripping unit configured to transfer the extension portion of the battery cell case to one side while gripping the extension portion, and a cutting unit located between the die unit and the gripping unit, the cutting unit being configured to cut a part of the extension portion of the battery cell case that is being transferred, wherein the die unit is a conveyor configured to continuously move toward one side, and a machining method using the same.

The present invention relates to a method of recovering lithium. More particularly, the present invention relates to a method of recovering lithium, the method including step (a) of adding a portion of a cathode material powder including a cathode active material with an olivine structure and an aqueous hydrogen peroxide solution to an acidic solution to form a first leachate and a first leaching residue; step (b) of separating the first leachate and the first leaching residue; step (c) of adding an aqueous hydrogen peroxide solution and a remaining portion of the cathode material powder of step (a) to the separated first leachate to form a second leachate and a second leaching residue; and step (d) of separating the second leachate and the second leaching residue, wherein the weight of the cathode material powder added in step (c) is 0.16 to 1.45 times the weight of the cathode material powder added into the acidic solution in step (a).According to the present invention, the present invention has an effect of providing a method of recovering lithium. According to the method of the present invention, by adding a portion of a waste cathode material powder including a cathode active material with an olivine structure to an acidic solution and then adding an aqueous hydrogen peroxide solution thereto to obtain a leachate, and adding an aqueous hydrogen peroxide solution and the remaining portion of the waste cathode material powder to the leachate to increase the pH of the leachate to remove iron (Fe) and phosphorus (P) components, high-purity lithium may be recovered economically.

The present disclosure relates to a secondary battery and a method for manufacturing the same, and the secondary battery according to an aspect of the present disclosure includes an electrode assembly extending in a direction; a cap including a cover portion disposed at one side of the electrode assembly in a length direction; and an outer packaging film including an accommodation portion that wraps the electrode assembly in a peripheral direction and an edge portion disposed at one side of the accommodation portion in a width direction, and having one surface that contacts an outer surface of the cover portion, wherein the cap further includes a reinforcement portion disposed opposite the cover portion with the edge portion positioned therebetween; and a cap-side connection portion connecting the reinforcement portion to the cover portion.

The present disclosure relates to a method of manufacturing a secondary battery, a secondary battery, a battery module including the same, a battery pack, and a vehicle. A current collector according to the present disclosure includes a slit portion in which a plurality of slits are formed in a thickness direction of an electrode assembly, and a connection portion connected to one side of the slit portion and including a support portion and a current collecting protrusion. The present disclosure may minimize wasted space in a secondary battery casing when welding a large number of foil tabs and a current collector, reduce the production cost, and enable the current collector and an electrode terminal to be easily coupled.

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 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 disclosure relates to an apparatus of manufacturing an electrode sheet, and the apparatus of manufacturing an electrode sheet according to one aspect of the present disclosure may include a pair of pressure rollers disposed parallel to each other to form a gap therebetween; and a hopper unit for feeding powder into the gap, wherein the hopper unit may include a manufacturing powder feeding portion configured to feed manufacturing powder for manufacturing an electrode sheet into one section of the gap; and a reverse pressure powder feeding portion configured to feed reverse pressure powder into another section of the gap.

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.

A vehicle entry management method, a vehicle entry management apparatus and a vehicle entry management system are provided. The vehicle entry management method according to the present disclosure includes acquiring vehicle location information and vehicle battery information of an electric vehicle; and performing a vehicle entry management operation related to entry of the electric vehicle into a facility based on the vehicle location information and the vehicle battery information.

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