Samsung SDI Patente

The present disclosure relates to a negative electrode for a rechargeable lithium battery, and a rechargeable lithium battery including the negative electrode, and for example to a negative electrode including a negative electrode current collector, a first and second negative electrode active material layers stacked on a first surface of the negative electrode current collector, and a third and fourth negative electrode active material layers stacked on a second surface of the negative electrode current collector. A content of a carbon-based negative electrode active material in the first negative electrode active material layer is larger than the content in the second negative electrode active material layer. A content of the carbon-based negative electrode active material in the third negative electrode active material layer is smaller than the content in the fourth negative electrode active material layer.

The present invention relates to an electrode plate notching apparatus and a method of notching an electrode, and an object thereof is to prevent generation of threads or burrs in a notching process. An electrode plate notching apparatus (1) according to embodiments includes a lower body (100) which supports an electrode plate (10) transferred in a first direction, a die (300) installed on the lower body (100) to face a non-coating portion of the electrode plate (10) and including a punch hole (400), an upper body (200) installed above the lower body (100) to be movable upwardly and downwardly, a punch (500) installed on the upper body (200) to ascend and descend in conjunction with ascent and descent of the upper body (200) and inserted into the punch hole (400) as the upper body (200) descends, and a tension application member (600) which applies tension to the electrode plate (10) in a second direction intersecting the first direction before the punch (500) is inserted into the punch hole (400).

A battery pack includes a plurality of battery modules; a plurality of slave battery management systems (BMSs) comprising at least one antenna and configured to monitor the plurality of battery modules, respectively; a master BMS comprising at least one antenna and configured to communicate wirelessly with the plurality of slave BMSs; and an environmental recognition sensor device configured to control the antennas of the plurality of slave BMSs and the antenna of the master BMS as a phased array antenna and to control phase and amplitude of a signal corresponding to each antenna based on recognition results of a surrounding environment.

A positive electrode includes a positive electrode active material that includes a lithium nickel-based composite oxide and is in a form of a single particle. A ratio of a volume cumulative average particle diameter (D₅₀) of the positive electrode active material measured using a particle size analyzer to a grain size of the positive electrode active material measured using backscatter electron diffraction after ion milling of the positive electrode is 1.6 to 1.8.

Disclosed are a compound for an organic optoelectronic device represented by Chemical Formula 1, a composition for an organic optoelectronic device including the same, an organic optoelectronic device, and a display device. The contents of Chemical Formula 1 are as defined in the detailed description.

A voltage measurement device may include a busbar electrically connected to a first terminal and a second terminal that are electrically connected to a battery cell, with the busbar extending in a first direction. A shunt resistance may be positioned on the busbar and extend in a second direction that intersects the first direction. A measurement unit is configured to measure a first voltage value applied to a first sub-region of the shunt resistance and measure a second voltage value applied to a second sub-region of the shunt resistance.

A negative electrode plate for a rechargeable lithium battery and a rechargeable lithium battery including the same are disclosed. A negative electrode plate for a rechargeable lithium battery includes a negative electrode active material including a mixture of a first negative electrode active material, a second negative electrode active material, and a third negative electrode active material. The first negative electrode active material includes natural graphite including secondary particles (3) in which primary particles (1) are assembled and a coating layer (7) that surrounds the secondary particles and includes amorphous carbon, and the first negative electrode active material has an orientation degree of 90 or less and a d002 of 3.356 to 3.360 Å; the second negative electrode active material includes artificial graphite; and the third negative electrode active material includes a core (4) including silicon nanoparticles (2) and amorphous carbon, and an amorphous carbon coating layer (6) that surrounds the core and includes amorphous carbon.

A negative electrode active material for a rechargeable lithium battery and a rechargeable lithium battery including the same are disclosed. A negative electrode active material includes a mixture of a first negative electrode active material and a second negative electrode active material, the first negative electrode active material includes natural graphite including secondary particles in which primary particles are arranged; and a coating layer containing amorphous carbon and surrounding the secondary particles, the first negative electrode active material has an orientation degree of 90 or less and a d002 value of 3.356 Å to 3.360 Å, and the second negative electrode active material includes rod-shaped artificial graphite.

A negative electrode active material for a rechargeable lithium battery and a rechargeable lithium battery including the negative electrode active material are provided. The negative electrode active material includes natural graphite containing secondary particles in which primary particles are assembled, and a coating layer that surrounds the secondary particles and includes amorphous carbon. The negative electrode active material has a d002 value of 3.356 Å to 3.360 Å and an orientation degree of 90 or less.

Disclosed are a dry binder for a rechargeable lithium battery, an electrode for a rechargeable lithium battery including the same, and a rechargeable lithium battery including the same, the dry binder including a modified polytetrafluoroethylene comprising carbon (C), fluorine (F), and oxygen (O), wherein the modified polytetrafluoroethylene has a ratio (I_OH/I_CF2) of a peak intensity (I_OH) corresponding to OH relative to a peak intensity (I_CF2) corresponding to CF₂ of about 0.03 to about 0.3 in an FT-IR spectrum measurement.

Disclosed are a positive electrode, and a rechargeable lithium battery including the positive electrode. The positive electrode includes a current collector, and a positive electrode active material layer on the current collector. The positive electrode active material layer includes a positive electrode active material including a lithium transition metal composite compound, and an irreversible positive electrode additive including at least one of a lithium iron-based oxide, a lithium cobalt-based oxide, and a lithium nickel-based oxide.

The present invention relates to a negative electrode plate for a rechargeable lithium battery and a rechargeable lithium battery including the same, wherein the negative electrode plate includes a negative electrode active material that includes a mixture of a first negative electrode active material, a second negative electrode active material, and a third negative electrode active material, the first negative electrode active material includes natural graphite including secondary particles in which primary particles are assembled and an amorphous carbon coating layer containing amorphous carbon and surrounding the secondary particles, and has an orientation degree of 90 or less and a d002 value of 3.356 Å to 3.360 Å, the second negative electrode active material is artificial graphite, and the third negative electrode active material includes a composite of silicon and crystalline carbon; and an amorphous carbon coating layer containing amorphous carbon and formed on the surface of the composite.

A positive electrode includes a current collector and a positive electrode active material layer on the current collector, the positive electrode active material layer comprising (a) a first positive electrode active material that comprises lithium-nickel-based composite oxide and has a bare form without a carbon coating on a surface thereof (is substantially devoid of a carbon coating on a surface thereof) , (b) a second positive electrode active material that comprises lithium-nickel-based composite oxide and has a core and a carbon coating layer on the core, (c) a conductive material that comprises a carbon-based material, and (d) a binder. Also disclosed is a rechargeable lithium battery including the positive electrode, and a method of manufacturing the positive electrode.

Some example embodiments include an electrode for a rechargeable lithium battery, a manufacturing method thereof, and a rechargeable lithium battery including the electrode. The electrode includes a current collector, an electrode active material layer on the current collector, and a coating layer on the electrode active material layer. The coating layer includes nanofibers and curable polymer distributed in an island shape between the nanofibers.

The present disclosure relates to a negative electrode (20) for a rechargeable lithium battery (100), a wound-type electrode assembly (40) including the negative electrode, and a rechargeable lithium battery including the negative electrode. The present disclosure relates to a negative electrode for a lithium battery, the negative electrode including a negative electrode current collector (COL2), a first negative electrode active material layer (NAL1) on a first surface of the negative electrode current collector, and a second negative electrode active material layer (NAL2) and a third negative electrode active material layer (NAL3) stacked on a second surface of the negative electrode current collector.

A battery pack assembly unit includes a pallet including a plate configured to support components of one or more battery packs, one or more support fixtures configured to constrain the components from moving, a transfer conveyor configured to transport the pallet, and a support fixture moving device disposed above the transfer conveyor and configured to change positions of the support fixtures based on a shape and a size of each of the components.

The present disclosure relates to a battery module, a method of operating the same, and a battery pack, and a technical problem to be solved provides a mechanism that may improve thermal management efficiency and space efficiency of the battery pack. To this end, the prevent disclosure provides a configuration for performing communication between battery management systems (BMSs) through acoustic communication using silicone oil as a medium.

The present disclosure relates to a master wireless communication device, a slave wireless communication device, and an operating method thereof, and a technical problem to be solved is to propose a mechanism that enables a master battery management system (BMS) and a plurality of slave BMSs to self-correct a radio frequency (RF) offset during RF-based wireless communication. To this end, the present disclosure is directed to providing a configuration that enables measuring relative RF offset data between wireless communication devices and estimating an absolute RF offset on a basis of the measured relative RF offset data.

Provided are a device for verifying and correcting a battery cell position and a method of verifying and correcting the battery cell position using the same. The device includes at least one camera spaced apart from a battery module including a plurality of battery cells, a fixed portion configured to support one side of the battery module, a movable portion disposed on another side of the battery module and configured to apply pressure to the battery module, and a jig located on a lower side of the battery module and provided with a plurality of holes.

The present disclosure relates to a negative electrode active material, a method of manufacturing the negative electrode active material, and a negative electrode including the negative electrode active material. The negative electrode active material comprises a core formed by agglomerated first silicon particles; a shell formed by agglomerated second silicon particles; and an amorphous carbon coating layer surrounding the first silicon particles and the second silicon particles, wherein the shell is disposed on the core, and wherein an average particle diameter (D50) of the first silicon particles is greater than an average particle diameter (D50) of the second silicon particles, the average particle diameter (D50) of the first silicon particles being about 100 nm to about 140 nm, and the average particle diameter (D50) of the second silicon particles being about 40 nm to about 100 nm.

An electrode assembly for a secondary battery includes a stack including a first electrode plate, a second electrode plate, and a separator between the first electrode plate and the second electrode plate, and an adhesive member attached to at least one side surface of the stack, the adhesive member extending to cover the at least one side surface of the stack and at least a part of each of a front surface and a rear surface of the stack, the adhesive member including a first adhesive member attached to the stack at a central portion of the stack in a longitudinal direction, and a second adhesive member attached to the stack and adjacent to the first adhesive member in the longitudinal direction, an adhesive surface of the first adhesive member having a greater area than an adhesive surface of the second adhesive member.

A dry negative electrode plate for a rechargeable lithium battery and a rechargeable lithium battery including the same are disclosed. A dry negative electrode plate for a rechargeable lithium battery includes a negative electrode active material and a binder, and the negative electrode active material includes a mixture of a first negative electrode active material, a second negative electrode active material, and a third negative electrode active material, the first negative electrode active material includes natural graphite including secondary particles into which primary particles are arranged; and a coating layer including amorphous carbon surrounding the secondary particles, the first negative electrode active material has an orientation degree of 90 or less and a d002 of 3.356 Å to 3.360 Å, the second negative electrode active material includes artificial graphite, and the binder includes polytetrafluoroethylene, polyvinylidene fluoride, a polyolefin, or a mixture thereof.

The present disclosure relates to an electrode manufacturing device and a method of manufacturing an electrode using the same, and the technical objects to be solved are directed to providing an electrode manufacturing device and a method of manufacturing an electrode using the same, in which a defect rate in a winding process is minimized by accurately measuring an extent of elongation before/after rolling of an electrode and a length of a slurry elongated after the rolling. To this end, the present disclosure provides a transfer part (100) which moves an electrode (20) coated with an active material, a rolling part (200) which rolls the electrode, a marking part (300) which is provided in front of the rolling part and forms a plurality of mark portions on the electrode, a measurement part (400) which measures distances between the mark portions before the rolling and after the rolling of the electrode, and a control part (500) which calculates an extent of elongation by comparing measurement results of the measurement part.

A composite substrate for a rechargeable lithium battery, a method for manufacturing the same, and a rechargeable lithium battery including the same are provided. The composite substrate may include a support layer including a polymer, a first metal layer on a first surface of the support layer, and a second metal layer on a second surface of the support layer, where at least one selected from among the first metal layer and the second metal layer may include a plurality of crystal grains, and an average grain size of the plurality of crystal grains may be about 50 nm to about 200 nm.

Disclosed are a binder for a negative electrode of a rechargeable lithium battery, a negative electrode including the binder, and a rechargeable lithium battery including the binder.

Provided are an insulating composition for a rechargeable lithium battery, an electrode manufactured using the insulating composition, and a rechargeable lithium battery. The insulating composition for the rechargeable lithium battery includes a binder including a non-aqueous binder and an aqueous binder, inorganic particles, and a solvent. The non-aqueous binder includes a first non-aqueous polyvinylidene fluoride-based binder and a second non-aqueous polyimide-based binder.

The present disclosure relates to a method of manufacturing a positive electrode for an all-solid-state battery. The method includes preparing a positive electrode mixture including a positive electrode active material layer, a solid electrolyte, a conductive material, and a fibrous binder, forming a positive electrode active material layer, and attaching the positive electrode active material layer on a current collector. The positive electrode active material layer has a loading level in a range of about 35 mg/cm² to about 100 mg/cm².

A negative electrode plate for a rechargeable lithium battery may include a negative electrode active material, which may include a first, second, and a third negative electrode active material. The first negative electrode active material may include natural graphite and a coating layer. The natural graphite may include secondary particles. The secondary particles may include an assembly of primary particles. The coating layer may include amorphous carbon and surrounds the secondary particles of the natural graphite. The first negative electrode active material may have an orientation of 90 or less and may have a d002 ranging from about 3.356 Å to about 3.360 Å. The second negative electrode active material may include graphite. The third negative electrode active material may have a sphericity from about 0.9 to about 1.0 and may include silicon nanoparticles and an amorphous carbon coating layer disposed on a surface of the silicon nanoparticles.

The present disclosure relates to a solid electrolyte composite, a positive electrode active material slurry including the solid electrolyte composite, and a solid electrolyte slurry including the solid electrolyte composite. More particularly, the present disclosure relates to a solid electrolyte composite, which includes a sulfide-based solid electrolyte and a surface modifier on a surface of the sulfide-based solid electrolyte. The surface modifier includes a linear hydrocarbon chain and a polar functional group bonded to the linear hydrocarbon chain, and the surface modifier is attached to the surface of the sulfide-based solid electrolyte via the polar functional group.

Disclosed are an apparatus and a method for generating an LFP battery model. The apparatus for generating an LFP battery model according to the present disclosure includes a lithium state recording unit that records a state of lithium (Li) in a positive electrode active material of a lithium iron phosphate (LiFePO<4>, LFP) battery according to charging or discharging of the LFP battery; and a battery model generating unit that generates a battery model of the LFP battery based on the recorded state of lithium in the positive electrode active material, wherein the battery model generating unit may generate a battery model by modeling the LFP battery with multiple resistors and capacitors reflecting the state of lithium in the positive electrode active material.

The present disclosure relates to a secondary battery potting device, and the secondary battery potting device includes a liquid supply unit supplying a first liquid and a second liquid, a block unit connected to the liquid supply unit and provided with a first inlet and a second inlet through which the first liquid and the second liquid are injected, respectively, and an outlet which is in communication with the first inlet and the second inlet, a nozzle unit connected to the outlet and communicating with the outlet, a cover unit coupled to the outlet and covering the nozzle unit, and a mixing promotion part installed in the nozzle unit and promoting mixing of the first liquid and the second liquid.

A secondary battery and a battery module are disclosed. A secondary battery includes an electrode assembly, a case accommodating the electrode assembly, a terminal over the case and electrically connected to the electrode assembly, a connection member over the terminal and connected to the terminal, and a safety member between the terminal and the connection member and configured to separate the terminal from the connection member at a set temperature or higher.

A roll press apparatus for manufacturing an electrode plate includes a frame portion, a first roller rotatable on the frame portion, the first roller being configured to press a first surface of an electrode plate, a second roller rotatable on the frame portion, the second roller being configured to press a second surface of the electrode plate facing the first surface, and an air spray part on the frame portion, the air spray part being configured to spray air onto a surface on the electrode plate pressed by the first roller and the second roller.

A multi-column slurry supply apparatus and method are disclosed. A multi-column slurry supply apparatus includes a slurry supplier, a manifold that branches a path of a slurry supplied from the slurry supplier into a plurality of paths and is configured to adjust a flow of the slurry, and a plurality of slot dies connected to the manifold and configured to spray the slurry on an electrode plate.

Disclosed a pouch-type rechargeable lithium battery. The pouch-type rechargeable lithium battery includes an electrode assembly including a first electrode plate, a second electrode plate, and a separator interposed between the first electrode plate and the second electrode plate; and an electrolyte into which the electrode assembly is impregnated, wherein the separator includes a porous substrate and a coating layer disposed on at least one surface of the porous substrate. The coating layer includes a binder and a filler. The binder includes a (meth)acrylic binder including a first structural unit derived from (meth)acrylic acid, (meth)acrylate, or a salt thereof, a second structural unit derived from a hydroxyalkyl (meth)acrylate, and a third structural unit derived from (meth)acrylamidosulfonic acid or a salt thereof. The electrolyte has an ethyl propionate content in a range of 10% by volume to 40% by volume in a non-aqueous organic solvent.

The present disclosure provides an apparatus for charge and discharge evaluation of a secondary battery, and a method for charge and discharge evaluation of a secondary battery. An apparatus for charge and discharge evaluation of a secondary battery according to the present disclosure includes: a support plate; an end plate disposed opposite to the support plate; a receiving portion that is formed between the support plate and the end plate and receives the secondary battery; a passage penetrating the end plate; a pressure measurement sensor disposed in an outer side of the end plate; and a displacement measurement sensor disposed on the outer side of the end plate, wherein the displacement measurement sensor may measure displacement of the secondary battery in a non-contact manner through the passage.

The present disclosure refers to a battery pack 100, including a battery pack housing 50 for accommodating a plurality of battery cells 60 therein, the battery pack housing 50 comprising a bottom plate 52; a bottom cover 10 arranged below the bottom plate 52 of the battery pack housing 50; a corrugated or trapezoidal sheet 20 disposed between the bottom plate 52 of the battery pack housing 50 and the bottom cover 10. The corrugated or trapezoidal sheet 20 is not directly fixed to the bottom plate 52 of the battery pack housing 50.

Provided are an electrode binder for a rechargeable lithium battery, an electrode manufactured using the electrode binder, and a rechargeable lithium battery. The electrode binder for a rechargeable lithium battery includes a metal salt of hydrophilic amino acid.

The present disclosure relates to a battery pack and a battery charging method using the same and is directed to providing a mechanism capable of effectively charging a battery quickly. To this end, the present disclosure provides a plurality of charging switches, each of which is connected to one of a battery cells, a first switch connected to a first battery cell charged by a charge pulse, a second switch which connects a second battery cell to the first battery cell, and a charging control device which charges the first battery cell and the second battery cell by controlling at least one of the plurality of charging switches, the first switch, and the second switch to be turned on or off according to an on/off-time of the charge pulse when the plurality of battery cells are charged through pulse charging.

The present disclosure relates to a tape attachment device for a secondary battery and a tape attachment method using the same and provides a tape attachment device for a secondary battery which includes a first attachment roller disposed in a direction substantially parallel to a first direction and a second attachment roller disposed in a direction substantially parallel to a second direction intersecting the first direction, wherein the first attachment roller and the second attachment roller bring tape into close contact with a secondary battery while moving in a direction substantially parallel to a third direction intersecting the first direction and the second direction.