Samsung SDI Patente

A secondary battery and a battery pack are disclosed. A secondary battery includes a case having an opening, an electrode assembly accommodated in the case, an electrode tab electrically connected to the electrode assembly, a cap plate to close the opening, a terminal including a terminal body passing through the cap plate, and a plate coupling portion located inside the case and connected to the terminal body, and a connection plate including an electrode tab coupling portion welded to the electrode tab, and a terminal coupling portion welded to the plate coupling portion.

An electrode assembly includes an electrode, and a coating layer on the electrode. The coating layer includes nanofibers, and the nanofibers include a polymer including polyamic acid, polyimide, or a combination thereof, and a compound.

The present invention relates to a secondary battery and a battery pack including the secondary battery. The secondary battery includes: a case having one open side, the case including a plurality of walls defining an internal space; an electrode assembly accommodated in the internal space; a cap plate configured to close the one open side of the case; a first terminal disposed on the cap plate; a first plate disposed between one of the plurality of walls and the electrode assembly in the internal space, the first plate including a first current collector connecting portion; and a first current collector including a first terminal connecting portion and a first plate connecting portion, the first terminal connecting portion electrically coupled to the first terminal, the first plate connecting portion electrically connected to the first terminal connecting portion and including a first welding surface facing away from the one of the plurality of walls, the first welding surface welded to the first current collector connecting portion.

A secondary battery, including an electrode assembly, a case accommodating the electrode assembly, and a cap plate covering an open portion of the case, wherein one of the case and the cap plate includes a vent part on an outer surface thereof, the vent part including a notch, the notch includes a first notch and a second notch, the first notch extends from a central portion of the vent part in a first direction, the second notch includes a first area extending from the central portion in the first direction, and a second area extending from the first area in a direction different from the first direction, and the first notch is inside the first area.

A cylindrical battery, an electrode assembly included therein, and a method for manufacturing the same are disclosed. The electrode assembly has a cylindrical shape formed by winding a stack, in which a separator is interposed between a positive electrode and a negative electrode multiple times to have a winding core, and includes a fixing tape configured to fix the separator exposed at the winding core to an inner surface of the electrode assembly.

Provided are a positive electrode slurry for a rechargeable lithium battery, a positive electrode including the positive electrode slurry, and a rechargeable lithium battery. The positive electrode slurry for a rechargeable lithium battery including a positive electrode active material including lithium iron phosphatebased compound particles, an organic phosphoric acid dispersant, and a solvent.

A manufacturing device of a fiber-type electrode includes: a bath including a coagulant; a transport portion including a supply roll provided outside the bath, a take-up roll provided inside the bath to be immersed in the coagulant, and a winding roll provided outside the bath, and configured to transport a fiber-type substrate; and a nozzle between the supply roll and the take-up roll. The nozzle includes a guide pipe that provides a moving passage of the fiber-type substrate, an inner main body around the guide pipe and that provides a central axis space in which an active material solution is supplied, and an outer main body around the inner main body and that provides a peripheral space in which a polymer solution is supplied.

A slot die coater includes a first die block, a second die block below the first die block, a third die block below the second die block, a first spacer between the first die block and the second die block, the first spacer defining a first slot through which a first slurry is to be discharged, the first spacer including a first base, first and second sub-guides extending from opposite sides of the first base, respectively, in a first slurry discharge direction, and an amount of the first slurry to be discharged from the first slot being determined based on shapes of the first and second sub-guides, and a second spacer between the second die block and the third die block, the second spacer defining a second slot through which a second slurry is to be discharged.

The present disclosure refers to a carrier framework (100) for a battery pack of an electric vehicle, the carrier framework (100) including a frame (10) including two pairs of opposing side beams (12A, 12B, 14A, 14B); at least one cross beam (20A, 20B) connecting two opposing side beams (12A, 12B) of the frame (10); and a stiffening beam (50) being fixed to the two other opposing side beams (14A, 14B) of the frame (10) and to the at least one cross beam (20A, 20B).

According to an aspect of the present disclosure, there is provided a pyrofuse ignition apparatus (100) including a pyroswitch (88) including a high side (87) to which an operating voltage is applied, a low side (89) to which a ground is connected, and an internal resistance (Rp) between the high side (87) and the low side (89), a low side switch (110) that outputs an ignition start signal (112) to the low side of the pyroswitch, a constant current supplier (120) that is connected to the low side of the pyroswitch and supplies a constant current to the internal resistance of the pyroswitch (Rp), a high side switch (130) configured to turn off an operating voltage applied to the high side of the pyroswitch when diagnosing the pyroswitch (88), and a resistance monitoring unit (140) configured to monitor a voltage difference across the internal resistance of the pyroswitch (Rp).

A secondary battery, a method of manufacturing the secondary battery, and a battery pack including the secondary battery are provided herein. The secondary battery includes: a case having an internal space; a cap assembly including a cap plate closing the case and a terminal supported by the cap plate; a current collecting plate located in the internal space and electrically connected to the terminal; an electrode assembly accommodated in the internal space; and a plurality of electrode tabs protruding from the electrode assembly, each including a root portion connected to the electrode assembly, a weld portion welded to the current collecting plate and biased to one side relative to a position of the root portion, and an intermediate portion connecting the root portion and the weld portion and having a peak point biased to an opposite side of the one side.

A secondary battery and a battery pack including the same are disclosed. The secondary battery includes a case, an electrode assembly accommodated in the case, a cap plate coupled to the case to seal the case and including a vent, and a venting reinforcement part on the cap plate and spaced apart from the vent.

An electrode manufacturing apparatus for a secondary battery includes a conveying part configured to convey an electrode plate, the electrode plate including a current collector coated with an electrode active material, a rolling part along the conveying part, the rolling part being configured to roll the electrode plate, and a roller part above the conveying part, the roller part including a roller base and an adhesive film covering a portion of the roller base, and the roller part being configured to roll a non-coated part of the current collector.

A secondary battery includes a plurality of electrode assemblies, a case including a receiving space accommodating the plurality of electrode assemblies, and a cap assembly coupled to the case. The cap assembly includes a cap plate sealing an opening of the case, a plurality of first collector plates connected to first electrodes tabs of the plurality of electrode assemblies, and a plurality of second collector plates connected to second electrode tabs of the plurality of electrode assemblies. A plurality of bus bars are arranged in a first direction in which the plurality of electrode assemblies are arranged, with one of the plurality of bus bars connecting at least two of the plurality of first collector plates and the plurality of second collector plates. A first external terminal is connected to one of the plurality of first collector plates, and a second external terminal is connected to one of the plurality of second collector plates.

A battery module includes battery cells arranged in a first direction, and spacers respectively between respective ones of the battery cells, and including a first spacer defining first openings, and a second spacer overlapping the first spacer along the first direction and defining second openings that are misaligned from the first openings.

Provided are 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 on the porous substrate. The coating layer includes boron nitride (BN) and a binder, and an amount of the boron nitride based on total 100 wt% of the coating layer is less than about 70 wt%.

A battery module (100) includes a plurality of battery cells (10) arranged in parallel with each other in a first direction (x), with each of the battery cells (10) including a case (15) accommodating an electrode assembly (210). An insulating tape (120) wraps the case (15) of each of the plurality of battery cells (10), and a plurality of holes (121) are formed in each of the insulating tapes (120). The holes (121) are formed in a portion of each of the insulating tapes (120) that wraps one or more larger surfaces among side surfaces of each of the battery cells (10), and an adhesive (130) is provided inside the holes (121).

The present disclosure relates to a secondary battery including an insulating member. The secondary battery includes an electrode assembly, a case in which the electrode assembly is accommodated, a cap plate comprising a terminal electrically connected to the electrode assembly and bonded to the case, and an insulating member interposed between the electrode assembly and the cap plate in the case, wherein the insulating member includes a first body and a second body located adjacent to one another in a longitudinal direction, and a connection body located between the first body and the second body and comprising a first groove into which at least a portion of the first body is inserted and a second groove into which at least a portion of the second body is inserted.

The present disclosure refers to a battery module (1). The battery module (1) includes a module base plate (12) and battery cells (11) stacked in a stacking direction (D) on the module base plate (12). Further, the battery module (1) includes at least one cooling element (13) with a connector (14), wherein the cooling element (13) is disposed on the module base plate (12), and at least one module cooling element connector (15) which extends along at least a part of the stacking direction (D) on a side of the module base plate (12) opposite to the cooling element (13). The module cooling element connector (15) includes a cooling element portion (151) which is connected to the connector (14) of the cooling element (13) via a fluid connecting element (121) of the module base plate (12) and via sealings (17) between the cooling element portion (151), the module base plate (12) and the connector (14) of the cooling element (13), wherein a flow path (16) is formed between the cooling element portion (151), the module base plate (12) and the connector (14) of the cooling element (13). The module cooling element connector (15) further includes a clamping clip portion (152) configured to engage with the connector (14) of the cooling element (13) for pulling the cooling element portion (151) and the connector (14) towards the module base plate (12) such that a sealing force is provided onto the sealings (17) by the clamping clip portion (152).

An apparatus and method for data replacement in a battery system may be provided. The method includes: establishing a connection with a user device; providing a graphical user interface (GUI) to the user device; receiving, via the GUI, a first command for data stored for a battery rack comprising a battery and a battery control unit (BCU); identifying a target component to be replaced based on the first command, wherein the target component is one of the battery or the BCU; restoring the data according to the first command; and initializing a part of the restored data according to the target component.

The present disclosure provides a secondary battery module (20) having a cell connection unit (30) that maintains the connection between bus bars (40) and circuit boards (50) and battery cells, and thus a process of manufacturing the secondary battery module (20) is simple, and problems such as electrical short and the like due to welding failure of bus bars (40) do not occur, and an apparatus for manufacturing the same. The secondary battery module (20) includes a module main body (60) including a cell housing (61), which opens upwardly and provides an accommodation space, and a plurality of battery cells arranged in the cell housing (61), and a cell connection unit (30) including a unit base (31) coupled to an upper portion of the cell housing (61), a plurality of bus bars (40) that are fitted to the unit base (31) and connected to the battery cell, and circuit boards (50) connected to the bus bars (40).

A secondary battery (100) includes an electrode assembly, a case (110) having an opening on at least one side surface, the case (110) accommodating the electrode assembly, and a cap plate (130) coupled to the opening of the case (110), wherein the case (110) includes a weld portion (160) having a curved pattern on at least one surface of the case (110).

A secondary battery and a method of manufacturing the same includes an electrode assembly, an exterior portion that accommodates the electrode assembly, a molding portion arranged along a periphery of the exterior portion, and a connecting portion between the exterior portion and the molding portion and that is attachable to the exterior portion. The molding portion surrounds and is coupled to the connecting portion and the exterior portion.

A slot die coater includes a slot die including a first slot and a second slot, the first slot being configured to discharge a block coating solution, the second slot being configured to discharge a slurry, and the first slot and the second slot being aligned in an order of a movement direction of a substrate, a first spacer in the first slot, the first spacer including a plurality of first slits spaced apart by a predetermined distance, and a second spacer in the second slot, the second spacer including a second slit positioned to correspond to a space between the plurality of first slits.

The present disclosure refers to a pelletizing device (100), for a dry battery electrode (DBE) manufacturing process. The pelletizing device (100), that allows more flexibility throughout the DBE manufacturing process, includes two rolls (101, 102) arranged in parallel to one another, wherein the rolls (101, 102) rotate in opposite directions, wherein at least one of the rolls (101, 102) comprises a plurality of cavities (103) in which pellets can be formed and wherein the structure of the cavities (103) is based on the desired shape and size of the pellets.

A system for controlling a drying variation by using near-infrared, NIR, lamps in a drying process of an electrode plate includes: first and second density measurement parts configured to measure first and second density data that is density of an electrode plate before and after drying, respectively; a drying quantity calculation part configured to calculate drying quantity data by processing the first density data and the second density data; and a lamp controller configured to control output energy of each of the NIR lamps based on an instruction signal received from the drying quantity calculation part. The drying quantity calculation part is configured to calculate a drying variation by comparing the first density data and the second density data and maintains a uniform drying state of the electrode plate by correcting the drying variation in real time.

The present disclosure relates to a fuse device, a battery management system, and a battery pack. A diagnostic current supply circuit (30) is connected to a first fuse element and a second fuse element (F2) to allow a diagnostic current to flow in the first and second fuse element (F2)s, an ignition circuit (20) is connected to the first fuse element and the second fuse element (F2) to allow an ignition current to flow in the first and second fuse element (F2)s. The diagnosing by controlling the diagnostic current supply circuit (30) and the igniting by controlling the ignition circuit (20) are independently performed.

The present disclosure relates to a fuse device, a battery management system, and a battery pack, and is directed to providing a circuit configuration capable of integrally performing a diagnosis function and an ignition function of a fuse that is is a protective element provided in the battery pack. To this end, a fuse device includes a fuse element, a diagnosis current supply circuit connected to the fuse element can configured to allow a diagnosis current for diagnosing the fuse element to flow through the fuse element, and an ignition circuit connected to the diagnosis current supply circuit and configured to allow an ignition current for ignition of the fuse element to flow through the fuse element. The diagnosis operation and the ignition operation of the fuse element are performed by controlling the activation of the diagnosis current supply circuit and the ignition circuit.

The electrical energy system (100) includes a high voltage system (10) with a plurality of battery cells (12) arranged in at least two strings (14a, 14b) of battery cells (12), the battery cells (12) of each string (14a, 14b) being connected in series, a low voltage system (16), at least one DC/DC converter (18a, 18b) for each of the strings (14a, 14b) of battery cells (12) connected in series to respective opposite ends of the strings (14a, 14b) of battery cells (12), the DC/DC converters (18a, 18b) being configured to down-convert a high voltage from the high voltage system (10) to a low voltage provided to the low voltage system (16), wherein the DC/DC converters (18a, 18b) are connected in parallel to the low voltage system (16), and a cell supervision system (20) for supervising voltages of individual battery cells (12) of the high voltage system (10) including a separate communication loop for each of the strings (14a, 14b) of battery cells (12) for independently supervising battery cell voltages within each of the strings (14a, 14b) of battery cells (12).

Provided are a system and a method of detecting a module battery management system (BMS) misconnection. A system for detecting a BMS misconnection includes an input interface device (1350) configured to receive a response based on a result of an attempt of communication with a plurality of module BMSs, a memory (1330) configured to store a program that analyzes the response and detects whether a module BMS misconnection is present, and a processor (1310) configured to execute the program. The processor determines wire connection types of the plurality of module BMSs, and detects whether the module BMS misconnection is present.

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.

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.

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.

The present disclosure relates to an apparatus and method for analyzing a battery characteristic. The technical object to be solved is to provide a solution capable of identifying a characteristic change of a battery cell that occurs during a plurality of charge/discharge cycles of a battery and detecting lithium precipitation that may occur during high-speed charging of the battery. To this end, the present disclosure provides a configuration for aligning a plurality of individual characteristic data acquired during a plurality of charge/discharge cycles of a battery based on capacity coordinates to generate integrated characteristic data and analyzing a charge characteristic or a discharge characteristic of the battery based on the generated integrated characteristic data.

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.