LG Energy Solution Patente

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An embodiment of the present invention provides a battery assembly including a plurality of battery cells, a battery housing configured to accommodate the battery cells therein, an insulating plate configured to include a plurality of through holes respectively corresponding to the battery cells, and stacked at an upper portion of the battery cells, a metal plate placed at an upper portion of the insulating plate, and configured to electrically connect the battery cells, and a battery management unit electrically connected to the metal plate, and configured to control charging and discharging of the battery cells.

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The present invention provides a facility for assembling an electrode capable of simultaneously producing two kinds of unit battery cells. The facility for assembling an electrode includes a pair of assembly parts, and at least any one of the pair of assembly parts may be configured to selectively manufacture a mono-cell or a half-cell.

Disclosed is a battery module. The battery module includes a frame providing a space therein and having a venting hole in an upper surface thereof; a plurality of battery cells positioned within the frame; and a venting cover configured to cover the upper surface of the frame and having a partially different thickness.

A battery according to the present disclosure includes an electrode assembly including a first electrode and a second electrode wound around a central axis of a winding center hole with a separator interposed between the first electrode and the second electrode; a can housing accommodating the electrode assembly; an electrode terminal electrically connected to the electrode assembly; and a first current collector plate electrically connecting the electrode assembly to the electrode terminal, wherein the first current collector plate is coupled to the electrode terminal by surface-to-surface welding and has at least one communication hole for communication between an inside of the can housing and the winding center hole.

The present disclosure relates to a negative electrode and a method of manufacturing the same. The negative electrode includes a silicon-based negative electrode active material together with a carbon-based negative electrode active material, thereby having excellent charge and discharge capacity, and has characteristics of excellent rapid charging performance since a magnetic field is applied during manufacturing, thereby reducing tortuosity of an entire negative electrode active layer. In addition, the negative electrode has advantages of excellent lifespan characteristics since low electrical resistance is uniformly maintained throughout the entire negative electrode active layer even when charge and discharge cycles of a secondary battery are repeatedly performed, thereby suppressing degradation.

The present specification relates to a method for manufacturing a lithium secondary battery and a lithium secondary battery. According to one embodiment of the present invention, provided is a method for manufacturing a lithium secondary battery, the method comprising the steps of: injecting a first electrolyte solution into a battery case in which an electrode assembly including a positive electrode and a negative electrode is accommodated; performing a first activation process after injecting the first electrolyte solution; injecting a second electrolyte solution different from the first electrolyte solution into the battery case in which the first activation process has been performed; and performing a second activation process after injecting the second electrolyte solution, wherein the lithium salt concentration of the first electrolyte solution is greater than the lithium salt concentration of the second electrolyte solution, and the difference between the lithium salt concentrations of the first electrolyte solution and the second electrolyte solution satisfies a specific range.

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A battery module according to an embodiment of the present disclosure includes a cell assembly formed by stacking battery cells and having a pair of electrode leads arranged to face upward, a lower frame having a form in which one side and an opposite side are open in the longitudinal direction and accommodating the cell assembly, a busbar frame assembly coupled to the lower frame and including a busbar frame mounted on the cell assembly, and a plurality of busbar plates fixed onto the busbar frame and electrically connected to the electrode leads of the battery cell.

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The present disclosure relates to a battery pack including: a plurality of battery cells; and a pack case configured to store the plurality of battery cells and including a cross-beam configured to partition the plurality of battery cells and having a through-hole formed therein to allow venting gas generated from the battery cells to pass therethrough.

A battery cell according to the present disclosure includes an electrode assembly including a positive electrode, a negative electrode and a separator stacked along a stacking direction; a cell case accommodating the electrode assembly; and a thermal insulator disposed on one remaining side of the cell case except two side portions in the stacking direction of the electrode assembly, the thermal insulator including a thermal insulation material, wherein the cell case includes a contact portion disposed at a different location from a location of the thermal insulator, the contact portion configured to contact a cooler.

Provided, according to example embodiments, is a method for manufacturing a secondary battery. The method comprises: a step for reading an electrode ID from a data matrix of a mono-cell including a positive electrode, a negative electrode, and a separator, and a step for determining whether the mono-cell is functional or defective on the basis of the electrode ID. wherein the electrode ID includes a symbol for identifying an electrode.

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A battery cell according to an embodiment of the present disclosure may include an inner cell in which an electrode assembly is housed in a pouch-shaped outer packaging; a case accommodating the inner cell and having higher rigidity than the outer packaging; an end cover covering an end portion of the case and having an insulating material; and a pad disposed in close contact between an inner surface of the case and an outer surface of the inner cell and configured to elastically deform.

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Disclosed is a pouch-shaped battery cell tray having a temperature sensing function, the pouch-shaped battery cell tray including an outer frame forming a first space portion configured to receive a plurality of pouch-shaped battery cells, the outer frame being configured such that an upper surface and a part of a side surface thereof are open, a seating unit disposed in the first space portion, the seating unit being configured to allow the plurality of pouch-shaped battery cells to be vertically received therein such that a second space portion is formed between the plurality of pouch-shaped battery cells, and a temperature sensor unit disposed at a side surface of the outer frame, the temperature sensor unit being configured to measure the temperatures of the plurality of pouch-shaped battery cells received in the first space portion.

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A busbar frame assembly according to an embodiment of the present disclosure comprises: a busbar connected to electrode leads of a plurality of battery cells; a printed circuit board (PCB) connected to the busbars or the electrode leads for sensing the voltage of the battery cells; and a busbar frame on which the busbars are disposed, wherein the busbar frame includes a coupling part that couples with the busbar, and wherein the busbar includes a recessed part that couples with the coupling part.

The present invention relates to a graphite-based negative electrode active material having excellent rapid charging performance by including artificial graphite having an interplanar spacing d(002) of a (002) plane of 0.3360 nm to 0.3370 nm and a crystallite size Lc in a c-axis direction of 30.0 nm to 38.5 nm and a method of preparing the same.

Disclosed is a battery module, which includes a cell stack including a plurality of battery cells, each of which has an electrode lead; a cover frame having a slit through which the electrode lead passes and configured to cover a front portion or a rear portion of the cell stack; and a lead bonding portion provided on an outer side of the cover frame and formed by overlapping the electrode leads of the battery cells so that at least a portion of the overlapping electrode leads is welded, wherein the cover frame includes a lead support unit configured to provide a pressing force from a rear surface of the lead bonding portion toward a front surface thereof so that the overlapping electrode leads come into close contact with the lead bonding portion

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In a battery charging control device and method, and a battery system including same according to an embodiment of the present invention, a charging state of a battery being charged is monitored, a charging state change of the battery during the charging is compared with a pre-stored reference charging state change acquired from an initial-state battery, and a charging amount of the battery being charged is adjusted, so that overcharging of the battery due to degradation can be prevented.

The present disclosure relates to a negative electrode and a method of manufacturing the same. The negative electrode includes a silicon-based negative electrode active material together with a carbon-based negative electrode active material to have excellent charge and discharge capacity and energy density, and has advantages of excellent rapid charging performance and lifespan characteristics as the carbon-based negative electrode active material included in each negative electrode active layer is oriented to have a predetermined inclination with respect to the negative electrode current collector.

The present disclosure relates to a negative electrode for a lithium secondary battery and a method of manufacturing the same. The negative electrode has a pattern structure in which a first region and a second region having a predetermined deviation in L* of a CIE LAB color difference meter are alternately disposed on a surface of a negative electrode active layer, thereby exhibiting excellent adhesion between a negative electrode current collector and the negative electrode active layer. In addition, the negative electrode has advantages of not only improved swelling phenomenon during charging but also excellent rapid charging performance.

A battery module according to the present disclosure includes a secondary battery including an electrode lead; and a busbar configured to be electrically connected to the electrode lead, wherein the busbar includes a support portion to support the electrode lead such that a contact surface with the electrode lead is parallel to an extension direction of the secondary battery.

The present disclosure relates to a positive electrode for an all-solid-state battery and an all-solid-state battery including the same.

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