LG Energy Solution Patente

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Disclosed is a battery assembly. A battery assembly according to an embodiment of the present disclosure may include a frame providing a space therein and having an opening formed at the rear; a battery cell positioned inside the frame; a rear end cover coupled to the opening and having a venting hole; and a venting channel that has a body providing a space therein, an inlet hole formed in the body and communicating with the venting hole, and an outlet hole formed in the body and configured to be openable.

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A battery cell according to one embodiment of the present disclosure includes an electrode assembly in which a first electrode, a second electrode, and a separator interposed therebetween are wound around a winding axis, wherein the first electrode includes a first uncoated portion that is not coated with an active material layer at a long side end along the winding direction and is exposed to the outside of the separator, and at least a part of the first uncoated portion is used as an electrode tab in itself; a battery housing including an opening on one side and configured to accommodate the electrode assembly through the opening; a cell terminal configured to pass through a surface positioned on an opposite side of the opening of the battery housing; and a current collector including a first uncoated portion coupling part disposed on one side of the electrode assembly and configured to be welded to the first uncoated portion, a terminal coupling part spaced apart from the first uncoated portion coupling part and configured to be welded to the cell terminal, and a connection area provided between the first uncoated portion coupling part and the terminal coupling part, wherein the connection area includes a plurality of slits spaced apart at regular intervals in the circumferential direction and having a convex shape toward an inner side in the radial direction.

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The present invention relates to a lead-tab laser welding method for joining a lead portion and a tab portion, and the lead-tab laser welding method may comprise a seating step of disposing the lead portion and the tab portion of a secondary battery so as to overlap each other, and a laser welding step in which a welding unit forms a plurality of beads in an overlap region of the lead portion and the tab portion, wherein in the laser welding step, with respect to first, second, and third positions sequentially located along a first direction in the overlap region of the lead portion and the tab portion, the beads are formed in the order of the first position, the third position, and the second position.

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Disclosed are a unit cell inspection apparatus for inspecting whether a burr has occurred on a cut surface of a unit cell, the unit cell inspection apparatus including a support unit configured to allow the unit cell to be seated thereon, a first image capture unit configured to capture an image of an upper surface of an edge of the unit cell, and a second image capture unit configured to capture an image of a side surface of the edge of the unit cell, and a unit cell inspection method using the same.

The present disclosure may provide an electrode assembly in which a positive electrode, a negative electrode, and a separator interposed therebetween are wound, wherein at least one of the positive electrode and the negative electrode includes an uncoated portion at a long side end, and a winding turn portion of the uncoated portion is provided at one end of the electrode assembly, wherein the winding turn portion includes a cutting portion and a bending portion including a plurality of uncoated portion layers configured to be bent by pressure.

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The present disclosure relates to a battery pack including: a plurality of battery cells; a pack case configured to store the plurality of battery cells and having a venting device provided on one side to discharge venting gas generated from the battery cell to the outside thereof; and an extinguishing member provided in the pack case and configured to provide an extinguishing agent to the venting device.

Provided is a method for analyzing a battery performance influencing factor of an electronic device, the method comprising the steps of: identifying a causal graph indicating a relationship between a plurality of factors related to a battery manufacturing process and process data including, as each data instance, data on the plurality of factors identified for each execution of the battery manufacturing process; and identifying influence information on the characteristics of a final product for each of the plurality of factors on the basis of the causal graph, the process data, and a model trained to predict the characteristics of the final product of the battery manufacturing process by receiving the process data.

A battery appearance inspection apparatus according to one aspect of the present disclosure includes a lighting unit configured to irradiate light to a battery and change a lighting condition including at least one of a direction, an angle, and an intensity of the irradiated light at time intervals; an image generating unit configured to photograph a target portion of the battery based on the light irradiated by the lighting unit and generate a plurality of images of the target portion so that the plurality of images are photographed under different lighting conditions; an image processing unit configured to synthesize at least two images among the plurality of images to generate at least one composite image having depth information of the target portion; a first inspection unit configured to determine whether the battery is a defective product based on at least one image among the plurality of images; and a second inspection unit configured to determine whether the battery is a good product based on the at least one composite image.

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A battery diagnosis device according to an embodiment herein may include a memory storing at least one instruction and one or more processors executing the at least one instruction, and the one or more processors may be configured to identify an identifier and a state of a battery unit, identify a utilization grade for reuse or recycling of the battery unit based on the state of the battery unit, and generate a certificate including at least one of the utilization grade of the battery unit, information on a constituent component predicted to be recovered from the battery unit, information on a predicted mass of each constituent component predicted to be recovered from the battery unit, information on a predicted price of the battery unit, or any combination thereof, based on the identifier of the battery unit.

A battery diagnostic device according to an embodiment disclosed herein may include an interface configured to acquire state data including a current value and a voltage value of a battery cell for each diagnostic cycle corresponding to a charge cycle or a discharge cycle and a controller configured to calculate a similarity between current data including the current value and reference data, extract first current data having the similarity exceeding the reference value in the current data, and diagnose the battery cell for abnormalities based on a first voltage value corresponding to the first current data.

A battery cell according to one embodiment of the present disclosure includes an electrode assembly in which a first electrode, a second electrode, and a separator interposed therebetween are wound around a winding axis, wherein the first electrode includes a first uncoated portion that is not coated with an active material layer at a long side end along the winding direction and is exposed to the outside of the separator, and at least a part of the first uncoated portion is used as an electrode tab in itself; a battery housing including an opening on one side and configured to accommodate the electrode assembly through the opening; a cell terminal configured to pass through a surface positioned on an opposite side of the opening of the battery housing; and a current collector including a first uncoated portion coupling part disposed on one side of the electrode assembly and configured to be welded to the first uncoated portion, a terminal coupling part spaced apart from the first uncoated portion coupling part and configured to be welded to the cell terminal, and a connection area provided between the first uncoated portion coupling part and the terminal coupling part, wherein the connection area includes a plurality of slits spaced apart at regular intervals in the circumferential direction and having a convex shape toward an outer side in the radial direction.

An electrode according to an embodiment of the present disclosure may include a sheet portion; and a tab portion protruded from the sheet portion and disposed closer to a side in a width direction of the sheet portion. An edge of the tab portion may include an end line located at an outermost side of the tab portion; a first side line located at a side in a width direction of the tab portion; a second side line located at an opposite side in the width direction of the tab portion; a first connection line connecting the first side line to the sheet portion; and a second connection line connecting the second side line to the sheet portion, wherein the second connection line is longer than the first connection line.

A battery state management device according to an embodiment of this document includes a first sensor configured to be constantly supplied with power through a first power supply circuit and to detect a state of a battery unit, a switch configured to electrically connect a second power supply circuit that supplies power to a second sensor different from the first sensor to the first power supply circuit, and a power control circuit configured to control an operation of the switch in response to an abnormal signal corresponding to a detection result of the first sensor.

According to exemplary embodiments, a die coater is provided. The die coater includes a first die including a manifold; and a shim coupled to the first die, wherein the shim includes a body shim extending in a first direction and a spacer shim extending in a second direction perpendicular to the first direction and dividing the manifold, the spacer shim defines an insulation flow path configured to discharge insulation slurry, the insulation flow path includes an inlet port, a first insulation flow path connected to the inlet port, and a second insulation flow path connecting an outlet port and the first insulation flow path, and the second insulation flow path may have a slope toward the outlet port

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A battery cell according to an embodiment of the present disclosure may include an electrode assembly in which a first electrode, a second electrode, and a separator interposed therebetween are wound around a winding axis; a can configured to accommodate the electrode assembly through an opened end formed on one side; a lid covering the opened end and having an injection port; a sealing member that has a sealing portion configured to be inserted into at least a part of the injection port and a welded portion configured to cover the injection port on an upper side of the lid and to be mutually welded to the lid, and is configured to seal the injection port; and a gasket surrounding at least a part of the sealing member.

A battery cell according to one embodiment of the present disclosure includes an electrode assembly in which a first electrode, a second electrode, and a separator interposed therebetween are wound around a winding axis to define a core and an outer circumferential surface, wherein the first electrode includes a first uncoated portion that is not coated with an active material layer along the winding direction; a battery housing including an opening on one side and configured to accommodate the electrode assembly through the opening; a cell terminal that penetrates a closed portion of the battery housing positioned on the opposite side of the opening and is exposed to the outside of the battery housing, is electrically connected to the first uncoated portion, and has at least one fixing structure provided in a direction facing the outside of the battery housing; and an insulating gasket interposed between the battery housing and the cell terminal on the closed portion side of the battery housing.

Disclosed herein relates to a slot die device that simultaneously discharges main slurry and sub-slurry, including: a die part comprising a first die comprising a manifold to which a main slurry is supplied and a second die coupled to the first die; and a shim part interposed between the first die and second die, forming a gap between the first die and second die through which slurry is discharged, wherein the shim part includes: a main shim plate guiding a movement of the main slurry; and at least one sub-shim plate guiding a movement of the sub-slurry, wherein the sub-shim plate is provided to cover a portion of the manifold.

A lithium secondary battery according to exemplary embodiments includes: a battery case; and an electrode assembly accommodated inside the battery case, wherein the electrode assembly includes a unit cell stack in which n (n is an integer of 2 or more) unit cells including a positive electrode and a negative electrode are arranged in a thickness direction, the unit cell stack includes a first unit cell and a second unit cell, the first unit cell includes a first positive electrode, and a positive electrode active material of the first positive electrode is composed of a first positive electrode active material represented by the following Chemical Formula 1. [Chemical Formula 1] Li_pFe_(1-q)M¹_qO₄In Chemical Formula 1, M¹ is any one of W, Cu, V, Cr, Ti, Zr, Zn, Al, In, Ta, Y, La, Sr, Ga, Sc, Gd, Sm, Ca, Ce, Nb, Mg, B, and Mo, andp and q are 5≤p≤7 and 0≤q≤0.5, respectively.

A method for monitoring a bending position of a preliminarily bent electrode tab in real time prior to winding an electrode assembly is provided. The monitored target is the position where the electrode tab is bent. The method includes (a) acquiring an image using a camera having a shooting direction substantially perpendicular to a plane including the electrode by detecting light irradiated in a direction substantially parallel to the shooting direction and reflected from a bent portion of the non-coated area; and (b) measuring a distance between an incision groove and the bending line in widthwise direction from the image acquired by the image acquisition device, wherein the incision groove is an inner end of the incision.

Disclosed are a secondary battery pressing apparatus for pressing a secondary battery including a battery case configured to receive an electrode assembly having a pair of electrode leads located opposite each other and a sealed portion provided at an edge of the battery case, the secondary battery pressing apparatus including a pair of pressing plates located on one side and the other side of the battery case, a pair of tight contact plates configured to be brought into tight contact with the battery case by the pair of pressing plates, and a pair of tight contact members configured to be brought into tight contact with a corner portion of the battery case by the pair of pressing plates, and a pressing method using the same.

Disclosed are a pouch-shaped secondary battery pressing apparatus for pressing a pouch-shaped secondary battery including a first pocket portion configured to receive an electrode assembly having a pair of electrode leads opposite to each other and a first sealed portion at an edge of the first pocket portion, the pouch-shaped secondary battery pressing apparatus including a first pressing unit configured to press one surface of the first pocket portion and a second pressing unit configured to press an other surface of the first pocket portion, wherein the first pressing unit has a first pressing pad with a plurality of first embossments facing the one surface of the first pocket portion, and the second pressing unit has a second pressing pad with a plurality of second embossments facing the other surface of the first pocket portion, and a pressing method using the same.

A busbar joint plate for a battery module according to an exemplary embodiment of the present invention is a busbar joint plate for a battery module, the busbar joint plate being coupled to a busbar for connecting the busbar and a circuit board, the busbar being provided for electrical connection of a plurality of battery cells in the battery module including the plurality of battery cells, the busbar joint plate including a busbar coupling portion coupled to the busbar; a board coupling portion connected to the circuit board; and a connection portion between the busbar coupling portion and the board coupling portion. The busbar joint plate and battery module according to an exemplary embodiment of the present invention can prevent damage to an FPCB through the busbar joint plate having a bent structure.

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Disclosed are a battery cell, and a battery pack and vehicle including the battery cell. A battery cell according to an embodiment of the present disclosure may include: an electrode assembly configured in a structure in which a positive electrode plate, a negative electrode plate, and a separator interposed between the positive and negative electrode plates are wound in one direction; a battery can configured to store the electrode assembly; a positive electrode current collector electrically connected to the positive electrode plate; a cell terminal connected to the positive electrode current collector via a through-hole of a battery cell; a negative electrode current collector electrically connected to the negative electrode plate; and an insulator interposed between the battery can and the positive electrode current collector, wherein the insulator may have a thickness reduction portion formed thereon.

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