Samsung SDI Patente

Provided are a battery rack and an energy storage system including the battery rack. The battery rack includes a frame unit having an accommodation portion configured to accommodate a battery module. The frame unit includes a rail groove unit on one side of the frame unit that extends in a longitudinal direction and has a shape of a groove, and a moving protrusion protruding outward from on another side of the frame unit opposite to the one side on which the rail groove unit is located.

An electrode for a secondary battery includes a substrate, a first electrode active material layer on at least one surface of the substrate, the first electrode active material layer including a first electrode active material, and the first electrode active material including at least one of crystalline carbon, amorphous carbon, or combinations thereof, and a second electrode active material layer on at least one side of the first electrode active material layer, the second electrode active material layer including a second electrode active material, and the second electrode active material including at least one of silicon-carbon nanocomposite or silicon oxide.

Disclosed herein is an apparatus (100) for removing lithium-ion battery gas, which is used to remove gas generated during an activation process of a lithium-ion battery (200). The apparatus (100) includes an ultrasonic vibration unit (110) configured to apply ultrasonic waves to the lithium-ion battery (200) to remove gas within the battery, and a control unit (130) configured to control an operation of the ultrasonic vibration unit (110).

A battery module includes a plurality of battery cells, each of which includes a vent and which are arranged in a first direction, spacers respectively positioned between the plurality of battery cells, a top plate spaced apart from the plurality of battery cells and covering a top of the plurality of battery cells, and side plates covering opposite side surfaces of the plurality of battery cells, in which each of the spacers includes an extension portion extending upwardly above the height of the battery cell, and the extension portion guides a venting gas discharge path of at least any one of the plurality of battery cells.

An energy storage system includes a plurality of slave battery management systems (BMS)s, and a master BMS connected to the plurality of slave BMSs, wherein, in a first mode, at least one of the plurality of slave BMSs is connected in series with the master BMS, and in a second mode, the plurality of slave BMSs are connected in parallel with the master BMS.

Provided are a battery pack and an electronic apparatus including the battery pack, capable of aligning battery cells in accurate positions inside a battery pack. The battery pack includes a plurality of battery groups each having a plurality of battery cells, a pair of end plates arranged on opposite sides of the plurality of battery groups, and a middle plate placed between the plurality of the battery groups and connecting the pair of the end plates, wherein a guide protrusion extending in a preset direction to be placed between the plurality of battery cells is protruded from the middle plate, and the electronic apparatus includes the battery pack.

The present disclosure relates to an electrode for a rechargeable lithium battery, and a preparing method thereof. An electrode includes an electrode current collector, and an electrode active material layer on the electrode current collector. The electrode active material layer includes an active material and a first composite conductive material. The first composite conductive material includes a first carbon nanostructure and a first polymer chemically bonded to a surface of the first carbon nanostructure. The first polymer includes a first structural unit derived from a (meth)acrylic acid-based monomer or a salt thereof; a second structural unit derived from a (meth)acrylonitrile-based monomer; and a third structural unit derived from a zwitterionic monomer.

A method and apparatus for monitoring a fire in a battery. The method of monitoring a fire in a battery includes: obtaining a temperature of a battery module; comparing a temperature change amount of the battery module with a reference temperature change amount during a reference time, if the temperature of the battery module reaches a predetermined temperature setting value; changing the reference time or the reference temperature change amount, if the temperature change amount is less than the reference temperature change amount; and disconnecting a connection between the battery module and a load, if the temperature change amount is equal to or greater than the reference temperature change amount.

An electrode assembly (110, 110') includes a first electrode plate (111, 111'), a second electrode plate (112, 112') on the first electrode plate (111, 111'), a separator (113, 113') between the first electrode plate (111, 111') and the second electrode plate (112, 112'), and a first adhesive member (115, 115') covering a lower area of a laminated body in which the first electrode plate (111, 111'), the separator (113, 113'), and the second electrode plate (112, 112') are repeatedly laminated, wherein the first adhesive member (115, 115') has a plurality of holes (115h, 115h') penetrating the first adhesive member (115, 115').

According to some aspects of the present disclosure, a battery management apparatus may include a balancing circuit including a plurality of balancing switches, each of which may be provided on a discharge path, along which one of a plurality of battery cells may be discharged and a processor configured to set a balancing target voltage of each battery cell of the plurality of battery cells based on a high voltage exposure history of each respective battery cell of the plurality of battery cells when balancing of the plurality of battery cells may be required, and configured to perform the balancing of the plurality of battery cells by controlling balancing switches corresponding to each battery cell so that a cell voltage of each battery cell becomes the balancing target voltage of each respective battery cell.

The present disclosure refers to a battery system (100) and an electric vehicle including the battery system (100).The battery system (100) includes a plurality of battery cells (10) stacked along a stacking direction (S) and a fire extinguishing agent (16) configured to generate fire extinguishing gases (22) through an exothermic reaction above a predetermined temperature. Each of the plurality of battery cells (10) includes a venting valve (12) disposed on a terminal side (14) arranged orthogonally to the stacking direction (S). The fire extinguishing agent (16) is arranged to continuously extend above the terminal sides (14) of the plurality of battery cells (10) along the stacking direction (S). Furthermore, the fire extinguishing agent (16) is configured to generate an amount of fire extinguishing gases (22) which extinguishes at least one or more but less than the number of the plurality of battery cells (10) above which the fire extinguishing agent (16) continuously extends.

A method of manufacturing a secondary battery includes preparing an electrode assembly that includes a first electrode including an electrode tab, a second electrode, and a separator, inserting the electrode assembly into a case that includes an opening configured to expose an upper surface of the electrode assembly, preparing a cap assembly that includes a cap plate having a conduction hole, a terminal plate on an upper portion of the cap plate and configured to be electrically connected to the electrode tab through the conduction hole, and a breakable degassing member between the cap plate and the terminal plate and having an empty space formed therein, coupling the case and the cap assembly, and performing a degassing step in which the degassing member is broken such that gas inside the case is discharged to an outside of the case.

A positive electrode active material includes: (a) a first particle of a lithium iron phosphate-based compound having an olivine crystal structure and a first average particle diameter; (b) a second particle of a lithium iron phosphate-based compound having an olivine crystal structure and a second average particle diameter smaller than the first average particle diameter; and (c) a third particle of a lithium nickel-cobalt-based oxide compound having a layered crystal structure, the first particle being in the form of a spherical secondary particle formed from aggregation of a plurality of primary particles, and the second particle being in the form of a single particle. Also disclosed is a positive electrode including the positive electrode active material, and a rechargeable lithium battery including the positive electrode.

According to an embodiment, an energy storage system (10) includes a plurality of enclosures (100, 100a, 100b), each of the enclosures (100, 100a, 100b) being configured to accommodate a battery rack (120); and a plurality of fire extinguishing devices (200) respectively corresponding to the enclosures (100, 100a, 100b). Each of the fire extinguishing devices (200) includes a fire extinguishing pipe (210) extending around an upper edge of a corresponding one of the enclosures (100, 100a, 100b), and each of the fire extinguishing pipes (210) includes a plurality of fire extinguishing nozzles (2100) spaced apart from each other. The fire extinguishing pipes (210) are configured to spray cooling water onto an outer surface of the corresponding one of the enclosures (100, 100a, 100b) through the fire extinguishing nozzles (2100).

The present disclosure is related to an overcurrent protection circuit (100). An overcurrent protection circuit (100) includes an overcurrent protection unit (100A) to which a current measured by a current sensor (20) connected to a power source is input, and configured to increase an input voltage value (Vi) according to an input of the current over time, step-up the input voltage value (Vi) within a predetermined range in response to the input voltage value (Vi) exceeding a reference voltage value (Vref), and output an output voltage value (Vo) at a first level, and an output unit (150) connected to the overcurrent protection unit (100A) and configured to transmit the output voltage value (Vo) to a switch (30, 30A, 30B, 30C) connected between the power source and a load (60A, 60B, 60C).

Provided are an apparatus and method for estimating a data gap. The method is performed by a processor of the apparatus (150) for estimating a data gap and includes collecting pieces of time series data related to batteries from battery management systems (210) which are provided in a plurality of devices (200) using the batteries as power sources and which monitor states of the batteries, determining a device in which data is missing in a random time period and thus a data gap duration occurs, as a target device (200_1) from among the plurality of devices (200), generating estimated data regarding the data gap duration occurring in the target device (200_1), and providing the target device (200_1) with a result of generating the estimated data regarding the data gap duration.

A device for detecting a battery condition (10) may include a storage device (11) storing a battery model (111) that models a voltage change and an internal impedance of a battery (20) as an electrical circuit, and a control device (13) configured to estimate a distribution status of lithium ions in a positive electrode active material of the battery (20), detect a distortion zone remaining in a boundary portion of two identical-phase regions in the positive electrode active material based on the distribution status, estimate an overvoltage caused by the distortion zone, correct the battery model (111) by using a correction parameter corresponding to the overvoltage, and estimate a condition of the battery (20) by using the battery model (111).

An apparatus for diagnosing a plurality of battery cells based on diagnostic data acquired from the plurality of battery cells includes a processor configured to diagnose the plurality of battery cells; and a memory configured to store instructions that are executed by the processor, wherein, based on the instructions, the processor is configured to: acquire a raw diagnostic dataset of the plurality of battery cells; generate a smoothed diagnostic dataset by smoothing noise in the raw diagnostic dataset due to a deviation in positions at which the plurality of battery cells are left unattended; generate a normalized diagnostic dataset by normalizing the raw diagnostic dataset based on the smoothed diagnostic dataset; and diagnose the plurality of battery cells based on the normalized diagnostic dataset.

Disclosed herein are a system for analyzing battery cell performance and a method of analyzing battery cell performance using the same. The system for analyzing battery cell performance includes a process equipment data management unit (520) configured to transmit equipment data, a data analysis and model management unit (510) configured to create and manage, based on the equipment data, a battery model including a base reference model (511) and an extended reference model (512), and a cell abnormality evaluation unit (530) configured to determine whether there is an abnormal cell using the battery model.

The present invention relates to an energy storage system (10) and an insulation monitoring method (S300) for the energy storage system (10). The energy storage system (10) includes a plurality of battery racks (100), each including a plurality of batteries and connected in parallel to one another, a power conversion device (110) connected to the plurality of battery racks (100) to convert power, a main switch (130) configured to turn on and off a current flow between the plurality of battery racks (100) and the power conversion device (110), a first insulation monitoring device (140) and a second insulation monitoring device (142) each connected to respective terminals of the main switch (130), and a controller (120) configured to control operations of the main switch (130), the first insulation monitoring device (140), and the second insulation monitoring device (142). The first insulation monitoring device (140) monitors insulation information regarding the power conversion device (110), and the second insulation monitoring device (142) monitors insulation information regarding the plurality of battery racks (100).

An apparatus for analyzing impedance characteristics of a battery includes: a switch configured to allow or block a current flowing along a path for supplying a charging current to a battery or extracting a discharging current from the battery; and a processor configured to derive impedance characteristics of the battery using a method of generating an excitation current for deriving the impedance characteristics of the battery from the charging current by controlling an on/off operation of the switch while the charging current for charging the battery is supplied through the path.

An electrode manufacturing device includes a rolling part configured to roll an electrode plate, a roundness measurement part on the rolling part, the roundness measurement part configured to measure a roundness of each of a pair of rolling rollers, a thickness measurement part behind the rolling part, the thickness measurement part configured to measure a thickness of the electrode plate, and a distance adjustment part configured to compare a measurement value of the thickness measurement part with a measurement value of the roundness measurement part to adjust a distance between the pair of rolling rollers.

Disclosed herein are a battery management system, BMS, an operating method thereof, and an energy storage system, ESS, and a technical problem to be solved is to provide a hard fault handling mechanism that can improve operational stability of the ESS. To this end, the present disclosure employs a configuration in which, when a hard fault occurs, error occurrence information is stored in a reference area of a memory, and then information in the reference area of the memory is read when the BMS wakes up, and an operation of the ESS is started or a protection operation is performed according to a read result.

A battery boiling cooling system may include an inlet temperature sensor configured to measure an inlet temperature, which is a temperature of a refrigerant at an inlet position where the refrigerant flows into a cooling flow path, the refrigerant including a phase-change material that changes between liquid and gas phases; an outlet temperature sensor configured to measure an outlet temperature, which is a temperature of the refrigerant at an outlet position where the refrigerant flows out of the cooling flow path; an inlet pressure sensor configured to measure an inlet pressure, which is a pressure of the refrigerant at the inlet position; an outlet pressure sensor configured to measure an outlet pressure, which is a pressure of the refrigerant at the outlet position; and a controller configured to control a flow rate of the refrigerant based on the inlet temperature, the outlet temperature, the inlet pressure, and the outlet pressure.

A secondary battery manufacturing apparatus includes a winding part including an unwinder from which an electrode plate may be unwound and a winder on which the electrode plate may be wound. A transfer part includes a roller configured to support the electrode plate as the electrode plate moves from the unwinder to the winder. A processing part includes a first processing part that is disposed in a path along which the electrode plate moves from the unwinder to the winder and disposed at a first surface of the electrode plate, and a second processing part disposed at the second surface of the electrode plate.

A mixing device for a secondary battery, the mixing device including a container part (10) storing a slurry (90), a driving part (20) configured to rotate the container part, and a mixing jig part (30) in the container part, wherein the slurry has a stirring hole (95) therein, the mixing jig part creating the stirring hole in the slurry, the stirring hole increasing a contact area of the slurry for an additive (99).

The present disclosure relates to a coating apparatus for manufacturing an electrode for a secondary battery and an electrode manufacturing apparatus, and the problem to be solved is to suppress a bulging phenomenon in an overlapping portion in which a composite slurry layer and an insulating slurry layer overlap and also reduce the width dispersion of the overlapping portion. In embodiments, there is provided a coating apparatus configured to coat a first slurry and a second slurry on an electrode sheet conveyed in one direction, including a first die, a second die disposed to face the first die, and a spacer interposed between the first die and the second die, and including a first discharge portion configured to discharge the first slurry and a second discharge portion located on at least one side of the first discharge portion in a width direction of the electrode sheet and configured to discharge the second slurry, wherein the first discharge portion has a width at a distal end that is greater than a width at a non-distal end.

An electrode plate processing device, including a plurality of rollers (10), a substrate (20) between the plurality of rollers, a self-supporting film (30) movable by the plurality of rollers, the self-supporting film being attached to the substrate, and a laser cutter (40) configured to cut the self-supporting film to a predetermined width using a laser beam of the laser cutter.

A method for preparing a positive electrode active material may include: (i) adding an aluminum raw material and sodium hydroxide to an aqueous (e.g., watersoluble) solvent to prepare a coating solution having a pH range of 12.5 to 14; (ii) adding core particles including a lithium nickel-based composite oxide to the coating solution to prepare a first mixed solution; (iii) adding a cobalt raw material to the first mixed solution to prepare a second mixed solution; and (iv) drying and heat-treating the second mixed solution to obtain a positive electrode active material.

An apparatus for detecting abnormal cell of battery module includes a charging current detector configured to detect whether a charging current reaches a first criterion during charging of a battery module comprising a plurality of battery cells, a state of charge (SOC) detector configured to detect whether an SOC reaches a second criterion, a cell voltage measurement part configured to measure a voltage of each cell, and a cell abnormality determination part configured to store the measured voltage of each cell as a maximum voltage, then compare a current voltage with the stored maximum voltage when the current voltage that is less than or equal to the maximum voltage is measured, and when a difference between the stored maximum voltage and the current voltage is greater than or equal to an allowable value, determine that a corresponding cell is an abnormal cell.

The present disclosure refers to a battery module being equipped with a protection means that provides for a protection of the spaces at the ends of the battery module, which are typically used for accommodating high voltage interfaces and other electric wirings prone to short circuits and arcing upon particle deposition in the case of a thermal runaway, from debris generated during a thermal event. Further, the present disclosure relates to a battery system employing one or more of the afore-mentioned battery modules. Also, the disclosure is related to a vehicle comprising at least one battery module according to the disclosure and/or at least one battery system according to the disclosure

An electrode assembly according to the embodiment includes a first electrode that includes including a first current collector, a first active material layer on the first current collector, and an insulating member. The electrode assembly also includes a second electrode that includes a second current collector and a second active material layer on the second current collector. A separator is positioned between the first electrode and the second electrode. The first current collector comprises an uncoated portion where the first active material layer is not provided, and the first uncoated portion comprises a first region. A second region is between the first region and the first active material layer, with the insulating member being disposed in the second region, and with the second region including at least one open region.

The present disclosure provides a secondary battery including an electrode assembly in which a positive electrode and a negative electrode are alternately stacked and a separator is disposed between the positive electrode and the negative electrode, a positive electrode housing which covers the electrode assembly and remains electrically connected to the positive electrode, a negative electrode housing which covers the electrode assembly and remains electrically connected to the negative electrode, and a case which is coupled to the positive electrode housing and the negative electrode housing to seal the electrode assembly, wherein the positive electrode and the negative electrode on which a notching process is not performed are coupled to the positive electrode housing and the negative electrode housing, respectively, and a method of manufacturing a secondary battery.

The present invention provides a cap assembly (210), a secondary battery including the same, and a method for manufacturing the cap assembly (210). The cap assembly (210) includes a cap plate (212) having a through hole and including a coating layer (213) disposed on at least a portion of an upper surface thereof, a terminal plate (216) including a body part (216a) and an inserting part (216b) which protrudes from the body part (216a) and is inserted into the through hole, an insulator (214) interposed between the cap plate (212) and the terminal plate (216), and a filler (219) disposed in at least a portion of a space in which the inserting part (216b) inserted into the through hole is surrounded with the insulator (214) and the cap plate (212).

A method for manufacturing a positive electrode active material includes: (a) performing a first mixing process at a first shear rate to form a mixture of a lithium transition metal composite oxide and a graphene; and (b) performing a second mixing process at a second shear rate on the mixture, wherein (i) the first and the second mixing processes are performed using a mixer including a press head and a rotating chamber, and (ii) the second shear rate is greater than the first shear rate. Also disclosed is a positive electrode active material manufactured by the above method, and a rechargeable lithium battery including said positive electrode active material.

A secondary battery (100, 200, 300, 400, 500) and a method for manufacturing the same are disclosed. The secondary battery (100, 200, 300, 400, 500) includes an electrode assembly (130, 230, 330, 430, 530), a case body (110, 310, 510) having an open first side surface accommodating the electrode assembly (130, 230, 330, 430, 530) and an electrolyte solution, and a case cover (120) attached to the first side surface of the case body (110, 310, 510), the case body (110, 310, 510) includes an injection port (113, 213, 313, 413, 513) on a second side surface (110a, 310a) different from the first side surface for receiving the electrolyte solution, and a discharge port (114, 221) is on a third side surface (110b, 310b) opposite to the second side surface (110a, 310a) and discharges at least a part of the electrolyte solution injected into the injection port (113, 213, 313, 413, 513) to an outside.

The present disclosure relates to a separator for a rechargeable lithium battery, and a rechargeable lithium battery including the separator. The separator for a rechargeable lithium battery includes a porous substrate and a coating layer located on at least one surface of the porous substrate, and the coating layer includes a crosslinked product of polyvinyl alcohol and polyacrylamide, and a filler.

A solid battery, and a method of preparing a solid battery. The solid battery includes: a cathode; an anode; and a solid electrolyte layer between the cathode and the anode. The solid electrolyte layer comprises one or a plurality of sub-solid electrolyte layers. The solid electrolyte layer comprises an interlayer between the plurality of sub-solid electrolyte layers or does not comprise the interlayer. At least one of the sub-solid electrolyte layer and the interlayer comprises a tackifier. The tackifier comprises a hydrocarbonaceous oligomer derived from an aliphatic chain monomer having 5 carbon atoms to 20 carbon atoms, an aromatic ring monomer having 6 carbon atoms to 20 carbon atoms, an aliphatic ring monomer having 5 carbon atoms to 20 carbon atoms, or a combination thereof.

An apparatus for manufacturing an electrode and an electrode manufacturing method are disclosed. An apparatus for manufacturing an electrode includes a roller configured to roll an electrode plate, and the roller is configured to primarily roll the electrode plate at a first compression ratio to form a primary electrode plate, secondarily roll the primary electrode plate at a second compression ratio to form a secondary electrode plate, and tertiarily roll the secondary electrode plate at a third compression ratio to form a tertiary electrode plate.

A secondary battery (10) is disclosed that includes an electrode assembly (100) including a first electrode (110), a separator (130), and a second electrode (120), a case (200) having an open first side that accommodates the electrode assembly (100), and having a terminal hole (210) on a second side different from the first side, a cover (300) coupled to the open first side of the case (200), an electrode terminal (500), coupled inside the case (200) to one of the first electrode (110) or the second electrode (120) via a terminal plate (400), and exposed to an exterior of the case (200), a gasket (600) arranged between the case (200) and the electrode terminal (500) on an exterior of the case (200) and inside the terminal hole (210), and an insulator (700) between the case (200) and the terminal plate (400) on an interior of the case (200), wherein at least a portion of one or more of the gasket (600) and the insulator (700) are configured to melt in a set temperature range.