LG Energy Solution Patente

The present application relates to a negative electrode active material, a negative electrode composition, a negative electrode for a lithium secondary battery including the same, and a lithium secondary battery including the negative electrode.

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An electrode assembly manufacturing apparatus includes: a wound separator in which two or more layers of separators are stacked and wound; a separator supply unit that individually separates and supplies the two or more layers of separators from the wound separator; a first electrode supply unit that supplies a first electrode; a second electrode supply unit that supplies a second electrode; and a winding unit that individually stacks and winds each separated separator, between the first electrode and the second electrode and on an outer side of the first electrode or the second electrode.

Provided are a battery cell stacking assembly and a method for manufacturing same. A battery cell stacking assembly according to one aspect of the present specification comprises: a plurality of plate-shaped battery cells stacked in a horizontal first direction; and side beams coupled to one side and the other side of the plurality of plate-shaped battery cells in the horizontal first direction.

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An apparatus for setting a charging protocol according to an embodiment of the present disclosure includes a profile acquisition unit configured to acquire a resistance profile indicating a corresponding relationship between a state of charge (SOC) and resistance for a battery charged at a predetermined C-rate; and a control unit configured to determine a target SOC satisfying a predetermined condition in the resistance profile, and set a charging protocol including a corresponding relationship between the predetermined C-rate and the target SOC.

A battery cell according to an embodiment of the present disclosure may include an electrode assembly configured by winding a first electrode and a second electrode with a separator interposed therebetween around a winding axis to define a core and an outer surface, the first electrode including an active material portion coated with an active material layer along a winding direction and a first uncoated portion not coated with an active material layer, and at least a portion of the first uncoated portion being used as an electrode tab itself, a battery housing configured to receive the electrode assembly through an opening formed on one side, and a current collector including a tab-coupling portion coupled to the first uncoated portion and a housing-coupling portion extending from the tab-coupling portion and electrically coupled to an inner surface of the battery housing, wherein at least one notch may be provided in the housing-coupling portion.

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The present disclosure relates to a magnetic alignment device and a method of magnetic alignment of electrode active material in electrode using the same. The magnetic alignment device has a structure that controls the directionality of the N poles and S poles of each of a plurality of unit magnets included in a first magnetic portion and a second magnetic portion to magnetize magnetic members positioned between the unit magnets, and applies a magnetic field to electrode slurry through the magnetized magnetic members. Therefore, the magnetic alignment device can perform magnetic alignment of electrode active material in an electrode with high efficiency during manufacturing of electrodes for lithium secondary batteries. In addition, as the magnetic alignment device can easily control the application of a magnetic field depending on the magnetization of the magnetic members, it has the advantages of excellent workability and high economic efficiency in electrode manufacturing.

An apparatus for managing a battery may include a measurement module configured to measure state information of the battery, a first diagnosis module configured to diagnose whether the battery is abnormal by comparing the state information measured by the measurement module with a first diagnosis criterion, and a second diagnosis module configured to diagnose whether the battery is abnormal based on a change amount of the state information measured by the measurement module.

The present disclosure is directed to providing a positive electrode mixture which can improve the discharge capacity of a battery. The positive electrode mixture for an all-solid-state battery includes: a sulfur-containing positive electrode active material, a first sulfur-containing compound containing cobalt, a second sulfur-containing compound containing phosphorus, and a conductivity aid.

A laser welding jig according to the present invention is applied to a battery cell assembly including a plurality of stacked battery cells and a side frame covering at least a portion of the plurality of battery cells, in which two adjacent leads are bent and welded, and the laser welding jig comprises: a pallet configured to allow the battery cell assembly to be seated thereon; and a protective jig arranged between the two adjacent leads.

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The present disclosure is directed to providing a sulfide-based solid electrolyte having improved ion conductivity, a method for preparing a sulfide-based solid electrolyte, and an all-solid-state battery including a sulfide-based solid electrolyte. The present disclosure provides a sulfide-based solid electrolyte containing a Group 3 element and having an argyrodite-type crystal structure, the sulfide-based solid electrolyte being represented by the chemical formula of Li_7-x-3yM_yPS_6-xHa_x, wherein M is at least one element selected from Group 3 elements, Ha is at least one element selected from halogen elements, and x and y satisfy 1.0 < x < 2.5 and 0 < y ≤ 0.2.

Provided are a gripper and a method for manufacturing a battery pack by using same. The gripper according to an embodiment, which is for transporting, to a pack housing, a battery cell stack assembly including multiple flat battery cells stacked in a horizontal first direction and side beams coupled to one side and the other side in the horizontal first direction of the multiple flat battery cells, may include: a base disposed above the battery cell stack assembly; a suction part disposed on the lower side of the central area of the base to suck onto the battery cell stack assembly; and lift pins protruding below the base and coupling to grip holes formed in the side beams in the vertical direction.

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Provided are a cylindrical electrode assembly and a tab-less secondary battery employing the same which uses the ends of electrode sheets without active material as electrode tabs. The electrode assembly structure prevents the risk of short circuits in the core section thereof and secures an additional current path in the core section, thereby reducing heat generation due to internal resistance. The core section of the electrode sheet is provided with a plateau that protrudes axially outward and extends in the lengthwise direction from an incision groove defining a segmented tab, the segmented tab is bent radially inward, and the upper end of the plateau is in contact with and is electrically connected to the unbent segmented tab.

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The present disclosure relates to a battery pack, and the battery pack according to an aspect of the present disclosure includes a housing having an accommodation space, and a module assembly disposed in the accommodation space, wherein the module assembly includes a module array including a plurality of stacked battery modules, and a side frame including a plate portion disposed at a side of the module array and coupled to each of the plurality of battery modules and a support portion extended from the plate portion in an outward direction of the module array and supported by the housing.

A battery cell according to an embodiment of the present disclosure includes an electrode assembly, a battery housing configured to accommodate the electrode assembly through an opening provided on one side, a terminal configured to be electrically connected to the electrode assembly through a closed portion provided on an opposite side of the opening of the battery housing, and a gasket interposed between the terminal and the battery housing, configured to prevent electrical connection between the terminal and the battery housing, and including a ceramic filler.

The present disclosure is directed to providing an anode-free all-solid-state battery having improved discharge capacity and cycle characteristics. The present disclosure is also directed to providing an anode-free all-solid-state battery which can be driven under a low confining pressure. The present disclosure provides an all-solid-state battery which includes a positive electrode including a positive electrode active material, a negative electrode current collector, and a solid electrolyte layer disposed between the positive electrode and the negative electrode current collector, the all-solid-state battery including no negative electrode active material, wherein lithium ions are supplied from the positive electrode active material layer through charging, so that a lithium metal layer as a negative electrode active material is formed on the negative electrode current collector, and the solid electrolyte layer includes a sulfide-based solid electrolyte containing a Group 2 element and having an argyrodite-type crystal structure.

The present invention improves at least one among the initial efficiency, the battery capacity, and the cycle characteristics of a non-aqueous electrolyte secondary battery. A negative electrode active material for a non-aqueous electrolyte secondary battery according to an embodiment of the present invention comprises porous composite particles containing silicon and silicon oxide (SiOx, 0 < x≤2), wherein some or all of the pores of the porous composite particles are filled with carbon, and some or all of the surfaces of the porous composite particles are coated with carbon.

Disclosed are a positive electrode material capable of improving the battery characteristics of an all-solid-state battery, an all-sold-state battery, and a method for preparing a positive electrode material. A positive electrode active material for an all-solid-state batteryaccording to an embodiment of the present disclosure includes a lithium transition metal oxide, a solid electrolyte and carbon nanotubes, wherein at least one carbon nanotube of the carbon nanotubes has a length of 100 µm or more.

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A crimping device configured to crimp a housing of a cylindrical battery includes: a punch configured to crimp the housing by pressing an upper end of the housing; and a fixing unit including a punch insertion portion into which the punch is inserted and a can support portion supporting at least a portion of the housing and extending in one direction from the punch insertion portion while forming a stepped portion with the punch insertion portion.

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A resin composition applicator for applying a resin composition to at least one surface of a housing or to at least a part of at least one surface of the battery is provided. The resin composition applicator includes a cartridge unit, a mixer unit connected to the cartridge unit, and an application unit connected to the mixer unit. The application unit includes at least one application pipe provided such that the resin composition introduced from the mixer unit can pass therethrough, and a discharge unit having a storage space provided such that the resin composition introduced from the at least one application pipe is accumulated therein. The discharge unit may at least include a first surface and a second surface for forming the storage space, and be configured such that the resin composition is discharged through a space between one end of the first surface spaced apart from one end of the second surface.

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A battery management apparatus according to an embodiment of the present disclosure includes a measuring unit configured to measure voltage and current of a battery including a plurality of negative electrode active materials; a discharging unit having one end connected to a positive electrode terminal of the battery and the other end connected to a negative electrode terminal of the battery, and configured to discharge the battery; and a control unit configured to control the discharging unit to discharge the battery when the voltage of the battery corresponds to a preset reference voltage, and calculate a capacity of a target negative electrode active material among the plurality of negative electrode active materials of the battery based on a current measured in a discharge process.

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