LG Energy Solution Patente

Zusammenfassung wird geladen …

Zusammenfassung wird geladen …

Zusammenfassung wird geladen …

Zusammenfassung wird geladen …

Zusammenfassung wird geladen …

Zusammenfassung wird geladen …

Zusammenfassung wird geladen …

Zusammenfassung wird geladen …

Zusammenfassung wird geladen …

Zusammenfassung wird geladen …

Zusammenfassung wird geladen …

Zusammenfassung wird geladen …

Zusammenfassung wird geladen …

Zusammenfassung wird geladen …

Zusammenfassung wird geladen …

Zusammenfassung wird geladen …

The present invention provides a positive electrode active material including at least one of a single particle composed of one nodule and a pseudo-single particle that is a composite of 30 or less nodules, wherein a degree of single crystal formation defined by Equation (A) is 2.7 or more. Degree of single crystal formation = ∑ i = 1 n 4 π 3 × R i 3 n <img class="EMIRef" id="077d891d-286d-48bd-a73e-227505a5a538-ia01" /> In Equation (A), R<i> is a radius of an i<th> grain which is measured when an electrode prepared by using the positive electrode active material is subjected to an ion-milling treatment and a cross-section of the electrode is then analyzed by electron backscatter diffraction (EBSD), wherein R<i> is a value measured in µm units, but a value substituted into Equation (A) is a unitless number that does not include units, and n is the total number of grains measured by the electron backscatter diffraction (EBSD) analysis.

BATTERY PACK INCLUDING FOAM PAD GASKET Disclosed is a battery pack including a battery cell stack including a plurality of stacked battery cells, a battery pack body configured to receive the battery cell stack, a battery pack lid added so as to cover an open upper surface of the battery pack body, and a foam pad gasket disposed at a joint between the battery pack body and the battery pack lid, wherein a through-hole for bolt insertion is formed in an outer periphery of the battery pack lid. The battery pack may be assembled through a simple process, and airtightness of the battery pack may be maintained even after repeated disassembly and reassembly.

The present invention provides an unfolding diagram of a separator laminated with a first electrode and a second electrode, and a structure of an electrode assembly including the separator. According to the present invention, in the unfolding diagram of the separator, first areas and second areas that are alternately repeated and connected in a chain are defined, and the separator is folded in a manner that the first areas and the second areas are alternately and repeatedly overlapped along the thickness direction.

Disclosed are an electrode assembly machining apparatus facilitating foreign matter removal and an electrode assembly machining method using the same, and more particularly an electrode assembly machining apparatus including a seating jig configured to allow an electrode assembly having an electrode lead connected thereto to be seated thereon, a bead machining unit located above a bead portion formed on the electrode lead, the bead machining unit configured to machine the bead portion, a pressing support unit located under the bead portion, and air spray units located respectively above and under the electrode assembly, the air spray units configured to spray air toward the bead machining unit, and an electrode assembly machining method using the same.

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.

The present disclosure relates to a secondary battery capable of being repeatedly charged and discharged and a method for manufacturing such a secondary battery. A secondary battery according to an embodiment of the present disclosure may include an electrode assembly; a case accommodating the electrode assembly; an electrode lead connected to an electrode tab of the electrode assembly and partially protruding to outside of the case; and an elastic body coupled to the case and pressing one side and the other side of the electrode lead.

The present disclosure relates to an electrode lead and a method for manufacturing an electrode lead, and more specifically, to an electrode lead connected to an electrode assembly of a secondary battery that can be repeatedly charged and discharged and a method for manufacturing such an electrode lead. An electrode lead according to an embodiment of the present disclosure may include a first portion coupled to an electrode tab of an electrode assembly of a secondary battery; and a second portion connected to the first portion and protruding to the outside of a case of the secondary battery, wherein the first portion may be formed to have a narrower width than the second portion, and a plating layer may be formed on at least a part of the first portion and the second portion.

A battery system according to an embodiment of the present invention may comprise: a plurality of battery assemblies; a plurality of heaters that correspond to respective battery assemblies and are arranged to be connected in series on a heater driving path; and a battery management device for monitoring and managing the battery assemblies and the heaters. The battery management device may control a heater driving switch disposed on the heater driving path so as to turn the heaters on or off simultaneously.

A battery system according to an embodiment of the present invention may include a plurality of battery management systems (BMSs) connected in a daisy chain manner. Here, each of the BMSs may include: a control unit; and a photo relay that transmits a control signal for identifier (ID) allocation, which is input from a signal input terminal, to the control unit in an optical transmission manner. In addition, when the control unit receives the control signal from the photo relay, the control unit may allocate its own ID according to a predefined ID allocation protocol, and transmit the control signal to a signal input terminal of a next BMS through a signal output terminal.

The present disclosure relates to a secondary battery, and more specifically, to a secondary battery that can be repeatedly charged and discharged. A secondary battery according to an embodiment of the present disclosure may include an electrode assembly including an electrode and a separator; an exterior material accommodating the electrode assembly; an electrode lead connected to the electrode assembly and protruding to the outside of the exterior material; a lead film covering at least a portion of the electrode lead to insulate the electrode lead from the exterior material; and a gas emission guide portion provided between the electrode lead and the lead film and forming a gas emission path through which the internal gas of the exterior material is emitted to the outside when the internal pressure of the exterior material increases, wherein a distance between one end of the lead film adjacent to the electrode assembly and the gas emission guide portion may be narrower than a distance between the other end of the lead film and the gas emission guide portion.

The present disclosure relates to a secondary battery module including a secondary battery stack including a plurality of secondary batteries stacked on each other, each secondary battery having two longer side portions and two shorter side portions respectively connecting two ends of the longer side portions, the secondary battery module including a foam pad inserted between adjacent secondary batteries in the secondary battery stack, wherein the foam pad includes a body made of a material having flexibility and having an accommodation portion which is an enclosed internal space; and a working fluid injected into the accommodation portion, and wherein the accommodation portion is deformed by a pressure applied from the secondary battery and the working fluid flows in the accommodation portion.

Disclosed is a battery pack. The battery pack includes a first battery module having a first port; a second battery module located at one side of the first battery module and having a second port; and a pipe assembly configured to communicate the first port and the second port, wherein the pipe assembly includes a holder coupled to an outer surface of the first port and having a through hole; a first connector passing through the through hole and inserted into the first port; and a fixing member configured to fix the holder to the first connector.

A wire-type three-electrode secondary battery according to some embodiments includes: a support having a hollow tubular structure and including a plurality of holes on a surface; a reference electrode inserted into an interior of the support; and an electrode assembly wound on the support. Accordingly, some embodiments can stably perform three-electrode measurement even when there is physical movement.

The present invention relates to a positive electrode material powder comprising: a first positive electrode active material comprising a first phosphate: and a second positive electrode active material comprising a second phosphate, wherein the first phosphate is represented by Formula 1, the second phosphate is represented by Formula 2, the first positive electrode active material is contained in a greater amount than the second positive electrode active material, and the second positive electrode active material has an average particle diameter D₅₀ of 1.0 µm or less.

Disclosed are a negative electrode active material, and a negative electrode and a secondary battery including the same, and an exemplary embodiment of the present invention provides a negative electrode active material including: a silicon-based active material; and a coating layer provided on the silicon-based active material, wherein the silicon-based active material includes one or more selected from the group consisting of Si, SiO_x (0 < x < 2), and Si/C, the coating layer is a negative electrode active material including a metal oxide, a content of the metal oxide is 10 parts by weight or more and 30 parts by weight or less based on 100 parts by weight of the negative electrode active material, and an average thickness of the coating layer is 0.01 µm or more and 5 µm or less.

A battery module according to an embodiment of the present disclosure comprises a battery cell stack in which a plurality of battery cells are stacked; a module case that accommodates the battery cell stack therein and has an opening part formed on one surface; and a cell diagnostic assembly mounted on the module case so as to be located in the opening part, wherein the cell diagnostic assembly is coupled to the module case so that at least a part thereof is movable.

A battery cell inspection device according to an embodiment of the present disclosure comprises an electrode assembly and a battery case in which the electrode assembly is mounted, with the battery cell inspection device comprising a sensor unit that faces at least one end of the battery cell, wherein the sensor unit is spaced from one end of the battery cell by a limit height before a venting phenomenon occurs in the battery cell, and detects whether one end of the battery cell has swelled to the limit height, and wherein the limit height is the height to which one end of the battery cell has swelled just before being vented due to gas generated within the battery cell.

A battery diagnosis device according to an embodiment disclosed in this disclosure includes an interface configured to acquire a plurality of charging/discharging data of a plurality of battery units and one or more processors configured to acquire a plurality of voltage-capacity data representing a relationship between a voltage change amount and a capacity change amount for each of the plurality of battery units based on the plurality of charging/discharging data, acquire a plurality of feature points corresponding to a plurality of charge/discharging cycles for each of the plurality of battery units based on the plurality of voltage-capacity data, and diagnose an abnormality of a specific battery unit based on an average change amount corresponding to feature points of the plurality of battery units and a specific change amount corresponding to a feature point of a specific battery unit.

The present disclosure relates to a battery module including: a plurality of battery cells; a pack case configured to accommodate the plurality of battery cells; and a barrier member coupled to the pack case and configured to extend in at least one direction.

Disclosed are a battery cell production apparatus and a battery cell produced using the same, and a battery pack and a vehicle including the battery cell. A battery cell production apparatus according to an embodiment of the present disclosure is an apparatus for producing a battery cell using an electrode foil where a coating layer is formed, and includes an electrode forming unit forming an electrode using the electrode foil; a winding unit winding the electrode formed by the electrode forming unit into a jelly roll form; and a folding unit folding the electrode.