Samsung SDI Patente

A battery diagnosis device (20) may include a database (270) configured to store design data (271) during design process for a battery (10), process data (272) collected during a process of manufacturing the battery (10), evaluation data (273) collected during a process of evaluating the battery (10), and field data (274) collected during a field process with the battery (10). A data link unit (260) is configured to link the design data (271), the process data (272), the evaluation data (273), and the field data (274). A processor (220) configured to, by executing an algorithm stored in a memory (230), (i) extract features based on each of the design data (271), the process data (272), the evaluation data (273), and the field data (274) in the order of the field data (274), the evaluation data (273), the process data (272), and the design data (271), and (ii) generate battery status information including information about the cause of deterioration of the battery (10) and the timing of deterioration of the battery (10) based on the extracted features.

A device (1) for measuring pressure of a battery cell (10) includes: a lower substrate (300) configured to accommodate a battery cell (10) thereon; an upper substrate (200) spaced apart from the lower substrate (300); a connection shaft (100) vertically coupling the lower substrate (300) and the upper substrate (200); and a first load cell (220) configured to measure force applied to the upper substrate (200).

Disclosed are a positive electrode active material, a positive electrode, and a rechargeable lithium battery. The positive electrode active material includes a first positive electrode active material including a lithium iron phosphate-based compound, a second positive electrode active material including a lithium nickel based composite oxide, and an irreversible positive electrode additive. A weight ratio (a/b) of the first positive electrode active material (a) to the second positive electrode active material (b) is about 1.5 to about 8.5. The irreversible positive electrode additive is included in an amount of about 0.1 wt% to about 1.9 wt% based on 100 wt% of the positive electrode active material.

The present disclosure relates to a positive electrode for an all-solid-state battery, an all-solid state battery including the positive electrode, and a method for manufacturing the positive electrode for an all-solid state battery. The positive electrode includes a positive electrode current collector and a positive electrode active material layer on the positive electrode current collector, wherein the positive electrode active material layer includes a positive electrode active material, a sulfide-based solid electrolyte, a binder, and an additive. The additive includes metal-acetylacetonate.

A dark current detection apparatus, a battery management system, and a battery pack, having a circuit topology capable of detecting an increase in dark current due to the loss of a dark current blocking function of a dark current blocking element. A dark current detection apparatus can include a voltage monitoring circuit that outputs a voltage monitoring signal having a variable magnitude, the variable magnitude varying according to a monitoring voltage of a monitoring node connected to the dark current blocking element, and a processor that determines whether the dark current occurs based on the voltage monitoring signal output from the voltage monitoring circuit.

The present disclosure relates to a solid electrolyte layer, an all-solid-state battery including the solid electrolyte layer, and a method for manufacturing the solid electrolyte layer. The solid electrolyte layer includes a sulfide-based solid electrolyte, a binder, and an additive. The additive includes a metal acetylacetonate.

A negative electrode active material comprising: a composite that includes a carbon-based material and silicon nanoparticles. The silicon nanoparticles have a pipe-shaped structure extending in one direction by a length. A wall portion of the silicon nanoparticles includes an inner wall forming a through hole having a diameter, and the wall portion has a thickness from the inner wall to an outer wall. Also disclosed is a negative electrode comprising a current collector having a negative electrode active material layer comprising the negative electrode active material on it. Further disclosed is a rechargeable lithium battery comprising the negative electrode and a positive electrode.

A connecting member and a battery pack including the same are disclosed. The connecting member includes a first member including an insertion passage at a side thereof, and a second member including an insertion portion at a side thereof, and the insertion portion is inserted in the insertion passage and connected to the first member.

The present disclosure a battery pack including a holder that may be universally applied to various types of secondary batteries. The battery pack includes a plurality of secondary batteries, a housing accommodating the plurality of secondary batteries, and a holder disposed within the housing and supports the plurality of secondary batteries, wherein the holder includes one or more short sides extending in a first direction and a plurality of long sides connected to the short sides and extending in a second direction, and wherein the holder defines one or more accommodating spaces where the plurality of secondary batteries are provided through the short sides and the long sides.

The present invention relates to a negative electrode active material for a rechargeable battery, a method of preparing the same, and a rechargeable battery including the same, wherein the negative electrode active material for a rechargeable battery includes a crystalline carbon-containing layer surrounding a hollow cavity; a silicon-based oxide contained within the hollow cavity; and an amorphous carbon-containing layer formed on an outer surface of the crystalline carbon-containing layer.

A method of kneading an electrode mixture capable of controlling the fiberization state of a binder to improve the characteristics of a dry electrode film, and a method of manufacturing a dry electrode film and a dry electrode including the same are provided. The method of kneading an electrode mixture includes performing a kneading process on the electrode mixture, obtaining a processed image of the electrode mixture on which the kneading process has been performed, determining a fiberization state of the binder included in the obtained processed image, and controlling process conditions of the kneading process based on the determined fiberization state of the binder.

A positive electrode active material may include a first positive electrode active material comprising a first lithium transition metal composite oxide and having an average particle diameter D<50> from 9 µm to 20 µm and may comprise a second positive electrode active material comprising a second lithium transition metal composite oxide and having an average particle diameter D<50> from 1 µm to 8 µm. A particle diameter D<20> of the positive electrode active material may be from 1.0 µm to 5.0 µm.

Provided are a separator for a rechargeable lithium battery, and a lithium secondary battery including the separator. The separator includes a porous substrate, and a coating layer located on at least one surface of the porous substrate. The coating layer includes a composition including a binder, a crosslinking agent, and a filler mixture. The filler mixture includes a filler having an amine group, and a filler having a carboxyl group or carboxylate.

A secondary battery having a degassing space formed inside a battery can, the battery can accommodating an electrode assembly. Using one or more gas guide parts formed inside the battery can, the secondary battery prevents the expansion of an accident by lowering pressure and discharging of gas inside the battery can, even when the electrode assembly expands due to an event, such as a fire or the like. The degassing space that accommodates the electrode assembly opens outward, the electrode assembly can be accommodated in the battery can, and a cap assembly can be mounted on the battery can while in contact with the electrode assembly. The degassing space also has a gas vent part, and the one or more gas guide parts guide gas generated in the battery can toward the gas vent part, the one or more gas guides located on an inner surface of the battery can.

A battery module includes a housing, a plurality of battery cells arranged in the housing along a first direction, a plurality of cell bus bars connected to the battery cells, a holder arranged on the battery cells and supporting the cell bus bars, a module bus bar including an extending portion connected to the cell bus bars and arranged on the holder, and an adhesive member fixing the extending portion to the holder.

A battery cell cooling unit to be arranged between battery cells is provided. The battery cell cooling unit includes: two facing plates in a space between the battery cells and respectively facing the battery cells; a thermoelectric element between the two facing plates and configured to dissipate heat generated by the battery cells; and an elastic pad between the two facing plates and configured to absorb volumetric expansion caused by swelling of the battery cells.

A positive electrode active material, a method of preparing the positive electrode active material, and a positive electrode and rechargeable lithium battery each including the positive electrode active material are provided. The positive electrode active material includes a lithium nickel-based composite oxide having a nickel content (e.g., amount) of greater than or equal to about 60 mol% based on 100 mol% of a total metal excluding lithium in the lithium nickel-based composite oxide, the lithium nickel-based composite oxide further including zirconium, and the positive electrode active material has a span ((D₉₀-D₁₀)/D₅₀) value of about 1.10 to about 1.25 in the particle size distribution and is in the form of single particles.

The present disclosure relates to a battery pack (100) manufacturing device and a method of manufacturing a battery pack (100), and a technical object to be achieved is to provide a battery pack (100) manufacturing device which includes a core molding jig (200) having a plurality of molding parts (230) on which a core pack (110) is seated to minimize a melting cycle, thereby increasing productivity and reducing a mold cost by standardizing the core molding jig (200), and a method of manufacturing a battery pack (100). To this end, a battery pack (100) manufacturing device includes a core molding jig (200) including a molding part (230) on which a core pack (110) of which a bare cell (112) and a protection circuit part (114) are coupled is seated, a mold part (300) which fixes the core molding jig (200), and an injection part (400) which is provided at the mold part (300) and performs a hot-melting process on the molding part (230) to form a resin molding portion (120) on the core pack (110), wherein the molding part (230) is formed as a plurality of molding parts (230) so that a plurality of core packs are seated on the plurality of molding parts (230).

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).

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).

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 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).

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.

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).

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 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.

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.

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 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.

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.

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).

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).

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.

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.

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 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.

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.

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 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.

Disclosed herein are a method and system for detecting inter-cell short circuits in secondary batteries. The system includes a voltage measurement unit including a probe that comes into contact with a cell of a secondary battery to measure an inter-cell voltage, a short-circuit control unit configured to control an inter-cell short circuit, and an inter-cell short-circuit detection unit configured to measure a first voltage between a first cell and a second cell in the secondary battery, to create a short circuit between the first and second cells, to measure a second voltage between the first and second cells, to eliminate the short circuit between the first and second cells, to measure a third voltage between the first and second cells, and to determine whether a short circuit occurs between the first and second cells by using at least one of the first to third voltages.