LG Energy Solution Patente

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The present application relates to a negative electrode active material, a method for preparing the 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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A dam slurry for electrode includes a hydrophobic additive, wherein the dam slurry for electrode is capable of controlling the electrode sliding shape and suppressing the occurrence of fat edges.

A battery pack according to the present invention comprises: a plurality of secondary batteries which include battery cases having electrode leads and lead sealing portions corresponding to the electrode leads, and which face each other such that the lead sealing portions are arranged in one direction; cooling plates positioned between the plurality of secondary batteries; and a pack case having an accommodation space for accommodating the plurality of secondary batteries, the pack case having drains that are adjacent to the lead sealing portions and are recessed in the direction of moving farther away from the lead sealing portions.

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A negative electrode may include a first negative electrode active layer and a second negative electrode active layer on a negative electrode current collector. An orientation index (O.I.) of each of the negative electrode active layers may satisfy a predetermined range, and thus adhesion of the negative electrode active layers to the negative electrode current collector is highly implemented, thereby having excellent lifespan characteristics. In addition, a secondary battery including the same has excellent output characteristics and can be charged in a short time even at a 1C-rate.

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A battery data analysis server according to one embodiment disclosed herein includes a first communication unit configured to receive battery data from a plurality of vehicles, an analysis unit configured to determine target vehicles traveling on a target date among the plurality of vehicles, analyze each battery data corresponding to each of the target vehicles, and generate daily data based on the result of the analysis, a data lake configured to store the daily data; a message queue configured to acquire data information including the number of daily data stored in the data lake in real time, a storage unit configured to receive and store at least some of the daily data from the data lake, and a scheduler configured to store the daily data in the storage unit based on the number of daily data being processed by the storage unit and the data information.

A battery diagnosis apparatus according to an embodiment disclosed herein includes a slave battery management system (BMS) configured to generate unit state information by measuring a state of a battery unit, a management unit configured to generate pack state information by measuring a state of a battery pack and control an operation of a relay related to power supply of the battery pack based on at least one of the unit state information and the pack state information, and a master BMS configured to receive the unit state information and the pack state information from the management unit and monitor battery cells included in at least one of the battery unit and the battery pack based on at least one of the unit state information and the pack state information.

According to an embodiment disclosed in this document, a process management apparatus may include a sensor including an air supply unit and an exhaust unit, each operating at a rotational speed to form an airflow to slurry, and a damper to control the airflow, the sensor configured to measure the differential pressure of at least some of a plurality of drying zones for drying the slurry, and a controller configured to adjust at least one of the rotational speed of the air supply unit, the rotational speed of the exhaust unit, and the opening rate of the damper based on the measured differential pressures.

The present invention provides a structure of a battery pack and a method of manufacturing the same wherein the battery pack includes: a battery module; a pack housing defining an inner space where the plurality of battery modules are accommodated; a first valve provided in the pack housing to selectively connect the inside and outside of the pack housing; and a support supporting the pack housing from inside, wherein the pack housing is sealed with the first valve closed so as to prohibit gas from entering thereinto and exiting therefrom.

The present application relates to a negative electrode active material, a method for preparing the 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.

A battery management apparatus according to some embodiments disclosed herein includes a sensor configured to collect battery data from a diagnosis target battery at intervals of a first time window each time when the diagnosis target battery enters a rest state and a controller configured to determine a short-term change of the diagnosis target battery during the first time window, based on current battery data measured in a current rest state, determine a long-term change of the diagnosis target battery between adjacent rest states, based on a difference between previous battery data measured in a previous rest state and the current battery data, and diagnose a state of the diagnosis target battery based on the short-term change and the long-term change.

Provided is a lithium secondary battery including a negative electrode including a negative electrode current collector and a negative electrode active material layer formed on the negative electrode current collector, a positive electrode, and an electrolyte including a lithium salt, an organic solvent, and an additive, wherein the negative electrode active material layer includes Si as a negative electrode active material, the organic solvent contains fluoroethylene carbonate, and Z below has a value of 0.1 to 0.2. z=X/YThe X above is a content (wt%) of Si with respect to the total weight of the negative electrode active material included in the negative electrode active material layer, and the Y above is a content (wt%) of fluoroethylene carbonate with respect to the total weight of the electrolyte, after the lithium secondary battery is activated.

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A pouch cutting apparatus according to the present disclosure is a pouch cutting apparatus for cutting a pouch including a cup portion and a side portion extended from the cup portion, and includes a cutter including a blade portion having a smaller cross sectional area toward an end portion that is configured to cut the side portion and a guide located adjacent to the blade portion to hold the side portion while the cutter cuts the side portion.

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Example embodiments provide a battery cell manufacturing apparatus. The battery cell manufacturing apparatus includes a first image obtaining part configured to obtain first images of first electrode assemblies including on one end an electrode tab stack of a first electrode and a first electrode lead welded to the electrode tab stack, a second image obtaining part configured to obtain a second image of a second electrode assembly judged to be available by a re-inspection among first electrode assemblies judged to be defective by an inspection based on the first images, an image matching device including an image matching part configured to compare the second image with the first images and extract a first image matching the second image, and an identifier (ID) allocation device configured to allocate an ID of a first electrode assembly corresponding to the first image matching the second image as an ID of the second electrode assembly. A battery cell system including the battery cell manufacturing apparatus is also provided. The present technology also provides a battery cell manufacturing method using image matching.

A battery data analysis system according to one embodiment disclosed herein includes an information acquisition device configured to detect ignition-on and ignition-off of a target vehicle, transmit battery data acquired from the target vehicle to a server, count the number of times the battery data is transmitted in an ignition-on section of the target vehicle, and transmit a cumulative transmission count signal to the server, and a server configured to determine a transmission state of the battery data of the target vehicle based on the result of the comparison of the number of battery data received in the ignition-on section of the target vehicle and the cumulative transmission count.

A battery data analysis server according to one embodiment disclosed herein includes a first communication unit configured to receive battery data from a plurality of vehicles, an analysis unit configured to determine target vehicles traveling on a target date among the plurality of vehicles, analyze each of the battery data corresponding to each of the target vehicles, and generate daily data based on the result of the analysis, a data lake configured to store the daily data; a message queue configured to acquire data information including the number of daily data stored in the data lake in real time, a storage unit configured to receive and store at least some of the daily data from the data lake, and a scheduler configured to check a load state according to data processing of the storage unit and store the daily data in the storage unit based on the load state.

A battery swapping station (BSS) management system according to an embodiment disclosed in this document may include a connection module connected to a battery pack to monitor a state of the battery pack; and a Software Defined Networking (SDN) controller configured to manage a connection state between the battery pack and the connection module on the basis of data related to the battery pack received from the connection module.

The present disclosure relates to a battery core module including a battery unit and an electrical connection assembly. The battery unit includes a battery body, a first electrode, and a second electrode, wherein the battery body has an end and wherein the first electrode and the second electrode are disposed at the end. The electrical connection assembly is disposed at the end and includes a first conductive component, a second conductive component, a third conductive component, a thermal cut-off element, and an insulating adhesive. The insulating adhesive wraps a portion of the first conductive component, a portion of the second conductive component, and a portion of the third conductive component, and the thermal cut-off element is connected between the second conductive component and the third conductive component. The first conductive component is connected to the first electrode, and the second conductive component is connected to the second electrode.

An apparatus for manufacturing a dry electrode powder according to an embodiment of the present disclosure comprises: a drying chamber in which a wet electrode slurry is dried and manufactured into a dry electrode powder; and a spray unit that sprays the electrode slurry into the inside of the drying chamber, wherein the inner wall surface of the drying chamber may include a plurality of protrusions.

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Provided is a current collecting plate that is connected to an electrode tab provided at one end among the two ends of the electrode assembly in the axial direction, wherein the one end is inserted into a can while facing the bottom thereof. The current collecting plate comprises: a terminal joint part that has one side surface joined to a cap, the bottom of the can, or an electrode terminal; an electrode joint part that surrounds the terminal joint part from the outside of the terminal joint part in the radial direction and has the other side connected to the electrode tab of the electrode assembly; elastic connection parts that are disposed between the electrode joint part and the terminal joint part and electrically connect the electrode joint part and the terminal joint part; and an opening that is disposed between the elastic connection parts adjacent in the circumferential direction and separates the electrode joint part and the terminal joint part in the radial direction or the axial direction.

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