Samsung SDI Patente

A firmware update apparatus includes: a memory slot to or from which a memory storing information about firmware to be updated is configured to be attached or detached; a power supply module configured to supply power to a firmware update target device; and a first processor configured to control an operation of the firmware update apparatus, and to: transmit a request packet including status request information to the firmware update target device and receive a response packet including a response to the status request information; based on receiving the response packet, control power to be supplied to the firmware update target device through the power supply module; and based on the supplying of the power being completed, transmit the information about firmware to be updated, stored in the memory, to the firmware update target device and control a firmware update of the firmware update target device to be performed.

A secondary battery includes a battery can having an internal space and an opening, an electrode assembly in the internal space of the battery can, a cap assembly fixed to the opening of the battery can, the cap assembly being connected to the electrode assembly, and a bottom retainer on a bottom portion of the battery can, the bottom retainer holding and supporting the electrode assembly.

A cap assembly for a secondary battery, the cap assembly including a cap plate seated on and coupled to an opening in a case that accommodates an electrode assembly, a first vent portion connected to the cap plate, the first vent portion fracturing at a first fracture pressure, and a second vent portion coupled to at least one of the first vent portion or a region adjacent to the first vent portion, the second vent portion fracturing at a second fracture pressure different from the first fracture pressure.

A printed circuit board includes a circuit layer including a base film and a conductive layer on at least one surface of the base film, a first cover layer on one surface of the circuit layer, and a flame-retardant layer between the circuit layer and the first cover layer.

Disclosed are an apparauta and a method of generating a lithium iron phosphate (LiFePO<4>, LFP) battery model. The apparatus includes: a lithium state recorder configured to record a state of lithium (Li) in a positive electrode active material of an LFP battery according to charging or discharging of the LFP battery; and a battery model generator configured to generate a battery model of the LFP battery based on the recorded state of the lithium in the positive electrode active material. The battery model generator generates a battery model by modeling the LFP battery using a capacitor and a plurality of resistors including an additional resistance component generated based on the state of the lithium in the positive electrode active material.

A system for inspecting curvature of a case corner (82) of a secondary battery, the system including a light source (100) configured to radiate light to a case corner (82) of a secondary battery at a plurality of incidence angles to generate reflected light, resulting in generated reflected light, a camera (200) configured to capture the generated reflected light to acquire a reflected light image of the case corner (82), and an image analyzer (300) configured to analyze the reflected light image and determine whether a curvature state of the case corner (82) is normal.

The present disclosure relates to a welding defect detection system and method capable of ensuring the safety and performance of the secondary battery by detecting defects of the welding part of the secondary battery. The system for detecting welding defects for a welding part of a secondary battery includes a primary detection module configured to detect and collect multidimensional image data for a welding part of a secondary battery, a data management module configured to store and manage the primary detection data, a secondary detection module configured to determine whether there is a defect in the welding part based on the stored and managed data, and a result transmission module configured to provide a determination result to a manufacturing execution system.

A rechargeable battery may include an electrode assembly wound around a core portion and a current collector plate located on at least one side of the electrode assembly and electrically connected to the electrode assembly. The current collector plate may include a first region in line with the core portion and having a first thickness and a second region in line with an outer portion of the electrode assembly and having a second thickness that may be less than the first thickness.

A secondary battery, a battery module including the same, and a method of manufacturing the same are disclosed. A secondary battery includes a case including an opening portion, an electrode assembly accommodated in the case and including a first tab member and a second tab member, a cap plate including a cap plate body located in the opening portion, and a cap plate terminal hole passing through the cap plate body, a terminal part including a first terminal electrically connected to the first tab member, and a second terminal electrically connected to the second tab member, and passing through the cap plate terminal hole, a first insulating part in contact with the terminal part to support the terminal part, and a second insulating part on the cap plate to support the first insulating part.

A secondary battery includes an electrode assembly including a first electrode, a second electrode, and a separator interposed between the first electrode and the second electrode, a case accommodating the electrode assembly therein, the case having an opened surface, a cap plate sealing the opened surface of the case, a sensor connection portion located on the cap plate, the sensor connection portion configured to be connected to an external gas pressure measurement sensor, and a first vent portion located inside the sensor connection portion.

An electrode plate according to an example embodiment may include an electrode plate including a substrate including a base layer and a first conductive layer and a second conductive layer disposed on upper and lower surfaces of the base layer, and an active material layer disposed on at least one surface of the substrate. The substrate includes a connector including a conductive material, the connector penetrating the first conductive layer, the base layer, and the second conductive layer, and connecting the first conductive layer and the second conductive layer. The substrate further includes a penetrator penetrating the connector.

A cap assembly (100) includes: a cap plate (110) including at least one first engaging portion (113); and at least one terminal assembly (120) including a second engaging portion (122) fitted and engaged with the first engaging portion (113).

An electrode assembly (1) includes a first electrode (102), a second electrode (104), a separator (106) between the first electrode (102) and the second electrode (104), a first electrode substrate tab (110) connected to the first electrode (102), and a second electrode substrate tab (120) connected to the second electrode (104), wherein the first electrode (102), the second electrode (104), and the separator (106) have a stack structure in one direction, wherein the first electrode substrate tab (110) includes a first substrate (111) protruding from the first electrode (102) in a first direction (211) crossing a stacking direction of the stack structure and a second substrate (113) protruding from the first electrode (102) in a second direction (213) crossing the stacking direction, and wherein the first direction (211) and the second direction (213) differ from each other.

A secondary battery includes (10): an electrode assembly (100) comprising a first electrode (110), a second electrode (120), and a separator (130) interposed between the first electrode (110) and the second electrode (120), the first electrode (110), the second electrode (120), and the separator (130) being wound to form the electrode assembly (100); a case (200) having an opening (201) formed on one side and forming a receiving space (210) in which the electrode assembly (100) is accommodated; and a cap assembly (300) coupled to the one side of the case (200) to seal the opening (201), wherein the cap assembly (300) includes: a cap plate (310) coupled to the opening (201) and comprising a terminal hole (311) formed with a step; and a terminal plate (320) coupled to the terminal hole (311) via an insulator part (330) and electrically connected to the first electrode (110), and a height of an upper surface of the cap plate (310) coupled to the opening (201) is a same as a height of an upper surface of the terminal plate (320).

A secondary battery inspection apparatus includes a first support member configured to support an electrode tab bundle in which a plurality of electrode tabs extending outward from an electrode assembly are stacked from below, a displacement sensor configured to calculate a measurement value indicating a thickness of the electrode tab bundle by pressing the electrode tab bundle with a force from above, and a processor configured to determine whether the electrode tab bundle is normal based on the measurement value calculated by the displacement sensor.

Disclosed are a spacer, a slot die, and a method of coating an electrode plate using a slot die. The spacer is configured to be interposed between the upper die and lower die of a slot die and configured to form a gap between the upper die and the lower die. The spacer may include a spacer body part configured to be coupled to the upper die and the lower die and a plurality of insulating liquid discharge parts provided on one side of the spacer body part and configured to discharge an insulating liquid. When an electrode plate is coated through the slot die, slurry may be discharged through an area of the spacer body part other than the insulating liquid discharge parts and the insulating liquid may be discharged through the insulating liquid discharge parts so that the insulating liquid is coated adjacent to ends of the discharged slurry.

Disclosed are a negative electrode for a rechargeable lithium battery, and a rechargeable lithium battery including the negative electrode. The negative electrode for a rechargeable lithium battery includes a current collector, a first negative electrode active material layer on a first surface of the current collector, and a second negative electrode active material layer on a second surface of the current collector. A difference in the active mass density between the first negative electrode active material layer and the second negative electrode active material layer is in a range of about 0.02 g/cc to about 0.06 g/cc.

A spacer (130) configured to be provided between a pair of adjacent battery cells (110) among two or more battery cells arranged in a preset direction. The spacer (130) includes a spacer body (131) configured to allow a cooling fluid to flow in the spacer body. The spacer body includes opposite surfaces configured to face the pair of adjacent battery cells. The spacer also includes at least one elastic member (133) passing through the opposite surfaces of the spacer body and configured to contact the pair of adjacent battery cells.

A secondary battery includes a wound electrode assembly including a first electrode, a second electrode, and a separator between the first electrode and the second electrode, a case accommodating the electrode assembly, the case including a bottom portion, a sidewall portion connected to the bottom portion, and an opening facing the bottom portion, a first electrode tab connected to the first electrode, and a cap assembly coupled to one end of the sidewall portion to seal the opening, the cap assembly including an insulating washer between the cap assembly and each of the electrode assembly and the first electrode tab, and the insulating washer including a base film and a hard coating layer on a surface of the base film.

A rechargeable battery, including an electrode assembly, a case accommodating the electrode assembly, the case including one side having an open portion, a cap plate sealing the open portion of the case, the cap plate including a through hole, and a pressure controller in the through hole of the cap plate, the pressure controller being open when the pressure inside the case is higher than or equal to a reference value and closed when the pressure inside the case is lower than the reference value.

A secondary battery (2) includes a case (100), an electrode assembly (200) inside of the case (100) and including a first electrode (210) and a second electrode (220), a first tab member (240) including a first inner tab member (241) and a first outer tab member (242) extending in a first direction from the first electrode (210), a first terminal (310) protruding outward from the case (100), a first current collector (410) inside of the case (100) and contacting the first terminal, a first inner plate (420) connected to the first current collector (410) and contacting the first inner tab member, the first inner plate (420) has a first thickness in the first direction, and a first outer plate (430) connected to the first current collector (410) and contacting the first outer tab member (242), the first outer plate (430) has a second thickness in the first direction different from the first thickness.

A solid-state battery and a method of preparing the solid-state battery, the solid-state battery including a cathode, an anode current collector, and a solid electrolyte layer disposed between the cathode and the anode current collector, wherein at least one of the cathode and the solid electrolyte layer includes a sulfide-based solid electrolyte, and at least one of a solvent or a decomposition product of the solvent, the solvent including a C1-C20 alkane compound containing one or more halogen atoms.

A secondary battery (10) includes: an electrode assembly (210); a case body (110) accommodating the electrode assembly (210); a cap plate (120) sealing an opening of the case body (110); and a positive electrode terminal (130_1) and a negative electrode terminal (130_2), each of the positive electrode terminal (130_1) and the negative electrode terminal (130_2) being electrically connected to the electrode assembly (210), coupled to the cap plate (120), and protruding in a first direction (D1) from an upper surface of the cap plate (120). The cap plate (120) includes a vent portion (122) located between the positive electrode terminal (130_1) and the negative electrode terminal (130_2). A first length of the case body (110) in the first direction (D1) is longer than a second length of the case body (110) in a second direction (D2) perpendicular to the first direction (D1), and the second length is longer than a third length of the case body (110) in a third direction (D1) perpendicular to each of the first direction (D1) and the second direction (D2).

A secondary battery includes an electrode assembly, a case accommodating the electrode assembly, a cap assembly, and a sealing tape surrounding an outermost portion of the electrode assembly, wherein the sealing tape includes a plurality of first protrusions protruding in a first direction, and a plurality of second protrusions connected to the plurality of first protrusions and protruding in a second direction, the plurality of first protrusions and the plurality of second protrusions are arranged alternately, the plurality of first protrusions are located on an upper side of a reference line, the plurality of second protrusions are located on a lower side of the reference line, and at least some of the plurality of first protrusions or the plurality of second protrusions cover at least a portion of an upper surface or a lower surface of the electrode assembly.

A secondary battery includes a case having an opening formed therein, an electrode assembly accommodated in the case, a cap plate fixed to the case, and a vent formed in at least one of the case and the cap plate. The vent includes a notch that includes a notch penetration portion extending through the at least one of the case and the cap plate and opening to an inside of the secondary battery and a notch blocking part that closes the notch penetration portion.

A secondary battery, including an electrode assembly including a first electrode tab on one side and a second electrode tab on another side, a case having open side(s) and accommodating the electrode assembly, a first cap plate coupled to the at least one open side of the case, a first electrode terminal electrically connected to the first electrode tab and being exposed outside the first cap plate, a first sub-plate electrically connecting the first electrode tab and the first electrode terminal, and a first insulator between the first cap plate and the electrode assembly, wherein the first sub-plate includes a first plate portion coupled to the first electrode tab, a first tab portion having one end coupled to the first plate portion and another end coupled to the first electrode terminal, and a first coating layer on at least a part of a surface of the first tab portion.

A secondary battery includes an electrode assembly, a case accommodating the electrode assembly therein, the case having a vent hole on at least one side thereof, and a vent portion arranged in the vent hole, the vent portion including a polymer layer and a brittle layer on the polymer layer.

A cap assembly, including a cap plate, an insulating plate on a surface of the cap plate, a coupling part extending from the cap plate toward the insulating plate, the coupling part being fixed to the insulating plate, the coupling part including a body extending toward the insulating plate, and a support on an end portion of the body, the support extending in a different direction from the body and is fixed to the insulating plate.

A secondary battery (20) and a battery pack including the same are provided. The secondary battery (20) includes a case (100), an electrode assembly (200) accommodated in the case (100), a cap plate (300) facing the electrode assembly (200), a pair of terminals (310) on the cap plate (300), the terminals (310) having different polarities, a current collector (400) connected to the electrode assembly (200) and extending through a first terminal (310) of the terminals (310), and a welded portion (500) between the current collector (400) and the first terminal (310).

An electrode includes a substrate including a metal material, an active material layer on a portion of the substrate, resulting in an uncoated portion, an electrode tab at an end of the uncoated portion, and a corrugated portion in the uncoated portion between the active material layer and the electrode tab.

A battery module includes: a plurality of battery cells; and a case accommodating the plurality of battery cells, wherein the case includes: a lower plate supporting lower portions of the plurality of battery cells; a side plate defining an accommodating space for the plurality of battery cells together with the lower plate; and a partition wall between the side plate and the plurality of battery cells, the partition wall being spaced apart from the side plate.

Disclosed are a method and apparatus for analyzing impedance of a lithium-ion battery. The method according to embodiments includes a transmission line model (TLM) equivalent circuit fitting operation of analyzing measured impedance data and fitting the analyzed impedance data to a TLM equivalent circuit. The TLM equivalent circuit fitting operation includes deriving, through a complex nonlinear least square (CNLS) method, a value at which a difference between an analytical function of the TLM equivalent circuit and the measurement data is minimized. The method according to embodiments may further include a data verification operation of verifying the measured impedance data using a Kramers-Kronig relation.

Disclosed are an apparatus and a method of estimating a state of charge (SOC) using a lithium iron phosphate (LiFePO₄, LFP) battery model. The apparatus includes: a lithium state recorder configured to record the state of lithium (Li) in a positive electrode active material of an LFP battery according to charging or discharging of the LFP battery; and a battery model generator configured to generate a battery model of the LFP battery based on the recorded state of the lithium in the positive electrode active material. The battery model generator may generate the battery model by modeling the LFP battery through adding an additional voltage increment corresponding to a charging or discharging path of the LFP battery to an open circuit voltage (OCV), in consideration of the state of the lithium in the positive electrode active material.

A secondary battery including a case, an electrode assembly housed in the case, and a cap assembly sealing the case. The cap assembly includes a cap down above the electrode assembly and a safety vent above the cap down. The safety vent includes a first notching region. The cap down includes a second notching region. Sizes of the first notching region and the second notching region are different.

Some example embodiments provide a negative electrode including a negative electrode current collector; a negative electrode active material layer on the negative electrode current collector and including a negative electrode active material; and an edge portion on the negative electrode current collector and provided at an edge of the negative electrode active material layer, wherein the edge portion includes metal particles that form an alloy with lithium.

A negative electrode active material for a rechargeable lithium battery (100) and a rechargeable lithium battery (100) including the negative electrode active material are provided. The negative electrode active material for a rechargeable lithium battery (100) includes graphite (110) and an amorphous carbon-containing layer (120) surrounding the graphite (110). The amorphous carbon-containing layer (120) includes a first region (130) and a second region (140), which have different R values of Equation 1 (R value = I<D>/I<G>, where I<D> and I<G> are a maximum peak intensity of the D band at a frequency of 1360±50 cm<-1> and a maximum peak intensity of the G band at a frequency of 1580±50 cm<-1>, respectively, obtained by Raman spectroscopy for the negative electrode active material), and the R value of Equation 1 in the first region is 0.5 or less.

Disclosed are an apparatus and a method of generating a lithium iron phosphate (LiFePO₄, LFP) battery model. The apparatus includes: a lithium state recorder configured to record a state of lithium (Li) in a positive electrode active material of an LFP battery according to charging or discharging of the LFP battery; and a battery model generator configured to generate a battery model of the LFP battery based on the recorded state of the Li in the positive electrode active material. The battery model generator may generate the battery model by modeling the LFP battery through adding an additional voltage increment corresponding to a charging or discharging path of the LFP battery to an open circuit voltage (OCV), in consideration of the state of the Li in the positive electrode active material.

Disclosed is an electrolyte for a rechargeable lithium battery, and a rechargeable lithium battery including the rechargeable lithium battery. The electrolyte for a rechargeable lithium battery includes a non-aqueous organic solvent, lithium salt, a first additive, and a second additive .

The present disclosure relates to a positive electrode for an all-solid-state battery. The present disclosure includes a positive electrode current collector, and a positive electrode active material layer on the positive electrode current collector. The positive electrode current conductor includes a main body section and a positive electrode tab protruding in one direction from the main body section. The positive electrode active material layer includes a first layer provided on the main body section, and a second layers on the first layer. At least one of the first and second layers includes a positive electrode active material, a solid electrolyte, and a binder. The binder content of the first layer is greater than the binder content of the second layer. The second layer includes a first region adjacent to the positive electrode tab, and a second region which remains after excluding the first region.

Disclosed are a positive electrode for a rechargeable lithium battery, and an electrode assembly for a rechargeable lithium battery including the positive electrode, and a rechargeable lithium battery. The positive electrode includes a positive electrode current collector, a positive electrode active material layer on at least one surface of the positive electrode current collector, and an insulating layer on at least one surface of the positive electrode current collector. The positive electrode active material layer includes a first positive electrode active material layer having a constant thickness, and a second positive electrode active material layer located at an edge portion of the positive electrode current collector and having a thickness of about 10% to about 80% of the thickness of the first positive electrode active material layer. The insulating layer is disposed on the second positive electrode active material layer.