SK On Patente

According to exemplary embodiments, the lithium secondary battery electrolyte includes a sulfonyl compound including a cyano group and a lithium salt. According to exemplary embodiments, the lithium secondary battery includes an electrode assembly including a cathode and an anode and the electrolyte for a lithium secondary battery. Accordingly, a lithium secondary battery comprising the lithium secondary battery electrolyte has improved high-voltage characteristics and high-temperature stability.

A secondary battery according to the present disclosure comprises a cathode, an anode facing the cathode, and a gel polymer electrolyte including a cross-linkable monomer, a polymerization product of the cross-linkable monomer, and a liquid electrolyte. A conversion rate of the cross-linkable monomer is 85% or more.

A secondary battery according to various embodiments of the present disclosure may comprise a battery can (100) in which an electrode assembly (200) is housed, and having a terminal hole (111) formed on one side thereof; an electron transfer unit (300) that is disposed inside the battery can, at least a partial region of which protrudes to the outside of the battery can through the terminal hole; and an insulation unit (400) interposed between the electron transfer unit and the battery can.

The present disclosure relates to a battery assembly. Such a battery assembly includes a case in which a receiving space is formed inside, a plurality of battery cells stacked in a predetermined direction, and a cell assembly accommodated in the receiving space. The cell assembly includes a printed wiring circuit board for measuring a voltage of at least one of the battery cells, and a cooling plate which is formed of an electrically conductive material, has a flow path formed therein through which a cooling material moves, and is disposed to face the battery cells. One electrode of each of the battery cells is electrically connected to the printed wiring circuit board through the cooling plate, and the other electrode of each of the battery cells is formed to be electrically connected to the printed wiring circuit board.

The present disclosure relates to a cap assembly of a secondary battery. The cap assembly of the secondary battery includes: a current collector including a positive electrode terminal and a negative electrode terminal; a cap plate which the positive electrode terminal and the negative electrode terminal penetrate and which includes a protrusion portion respectively surrounding an outer circumference of the positive electrode terminal and an outer circumference of the negative electrode terminal; a first insulating member which the positive electrode terminal and the negative electrode terminal penetrate and which is disposed between the current collector and the cap plate; a bracket respectively disposed between the protrusion portion and the positive electrode terminal and between the protrusion portion and the negative electrode terminal; and a second insulating member respectively disposed between the bracket and the protrusion portion.

A cathode (100) for a lithium secondary battery and a lithium secondary battery comprising the cathode are provided. The cathode comprises a cathode current collector (105), and a cathode active material layer (110) comprising a cathode active material on at least one surface of the cathode current collector. A G value and measured at a surface of the cathode active material layer is less than 2.0.

A sulfide-based solid electrolyte comprises 0.1 to 5 mol% of at least one element A that is selected from the group consisting of Group 1 and Group 2 elements, excluding Li, when analyzed by inductively coupled plasma spectroscopy (ICP). Accordingly, the moisture stability of a sulfide-based solid electrolyte may be improved.

According to the present disclosure, a secondary battery is provided, which comprises an electrode assembly provided with an uncoated portion, a first current collector and a second current collector each comprising a connection portion electrically connected to the uncoated portion of the electrode assembly, a case having one open side to accommodate the electrode assembly, the first current collector, and the second current collector, and a cap plate covering the open side of the case.

An anode for a lithium secondary battery according to embodiments of the present disclosure includes: an anode current collector; and an anode active material layer disposed on at least one surface of the anode current collector, wherein the anode active material layer includes a first anode active material layer and a second anode active material layer disposed on the first anode active material layer, and the diffusivity (D) of the entire anode active material layer obtained through X-ray microscopy (XRM) analysis is 4.6% to 5.8%.

A lithium secondary battery, and a method of operating a lithium secondary battery are provided. The lithium secondary battery includes a cathode including a cathode active material layer that includes a lithium-nickel metal oxide, and an anode opposing the cathode. A full width at half maximum ratio or a relative peak area ratio of the lithium secondary battery is 70% or more.

Provided is a battery pack. The battery pack comprises a plurality of battery cells, and a bus bar configured to electrically connect the plurality of battery cells, wherein the bus bar comprises a first segment and a second segment that are alternately repeated in a longitudinal direction, and the first segment and the second segment are tilted in different directions.

A cathode for a secondary battery and a secondary battery comprising the cathode are provided. The cathode a cathode current collector, and a cathode active material layer on a surface of the cathode current collector which comprises a cathode active material. The cathode active material layer comprises a first plurality of pores having a diameter of 0.08 µm or less, and a second plurality of pores having a diameter of greater than 0.08 µm and 1 µm or less. A ratio of a second porosity to a first porosity is in a range from 1.75 to 3.6.

The present disclosure relates to a battery cell including: a case for receiving an electrode assembly; a terminal portion electrically connected to the electrode assembly and protruding in a predetermined protrusion direction toward one surface of the case; a through-hole penetrating the one surface of the case; a protrusion portion extending in the protrusion direction from a periphery of the through-hole, including an opening hole at one end, and connecting an inside and an outside of the case through the opening hole and the through-hole; and a cover portion detachably coupled to the protrusion portion to cover the through-hole.

A battery cell is disclosed. In some implementations, the battery cell includes: an electrode assembly; a cell case accommodating the electrode assembly; a cap plate covering an open end of the cell case and including at least one through-hole; and a terminal assembly coupled to the cap plate, wherein the terminal assembly includes a terminal electrically connected to the electrode assembly, a bracket disposed around the terminal in a lateral direction of the terminal assembly, and an insulating member disposed between the terminal and the bracket, the cap plate includes a stepped portion formed around the through-hole on a surface of the cap plate facing the electrode assembly, and at least a portion of the bracket is disposed on the stepped portion and coupled to an inner surface of the cap plate.

A secondary battery according to various embodiments of the present disclosure includes: a battery can including a first curved part formed to be curved to have a first radius of curvature on an inner circumferential surface of a side wall; an electrode assembly accommodated inside the battery can; and a cover cap coupled to the side wall, wherein the cover cap includes a curved coupling part having a shape corresponding to at least a portion of the first curved part.

A battery pack includes one or more battery modules. Each of the battery modules includes a plurality of battery cells having a plurality of first electrode terminals and a plurality of second electrode terminals, a first busbar electrically connected to a plurality of first electrode terminals, a second busbar electrically connected to a plurality of second electrode terminals, and a first insulator disposed between the first busbar and the second busbar and configured to electrically insulate the first and second busbars.

Proposed is an immersion cooling module including a housing configured to contain a cooling fluid, and a battery module submerged in the cooling fluid inside the housing, wherein the battery module includes a buffer member provided on stacked surfaces of battery cells and configured to have a buffer space into which an inflow of the cooling fluid is blocked or controllable by a rupture film.

A solid electrolyte for a lithium secondary battery according to embodiments of the present disclosure may comprise a sulfide compound represented by Formula 1 below and may include a PS₄^3-unit and a BS₃^3- unit. Accordingly, the ionic conductivity of a lithium secondary including the solid electrolyte for a lithium secondary battery can be improved. [Formula 1] Li_6-aB_bP_1-bS_5-bX_1-a(in Formula 1, a and b may satisfy 0≤a<1, and 0<b<1, and X may be at least one element selected from the group consisting of F, Cl, Br and I).

A battery cell according to an embodiment of the present disclosure includes a cell case having a can accommodating an electrode assembly therein and a cap plate connected to the can, and a vent notch formed in at least one of both surfaces of the cap plate, wherein the vent notch includes at least one first notch portion formed based on a first path, at least one second notch portion formed based on a second path, and a connection notch portion connecting the first notch portion and the second notch portion.

The present disclosure relates to a cap for a secondary battery, a method for manufacturing the cap, and a method for assembling a secondary battery. The cap comprises an injection hole that penetrates the cap plate; the inlet portion of the hole has an oblique surface whose roughness is greater than that of the adjacent cap surface. The cap manufacturing method includes: forming the injection hole in the cap plate; shaping the inlet portion so its diameter decreases from inlet to outlet, which faces the interior of the battery housing, and creating an oblique surface inclined to the surrounding cap surface; and surface processing the oblique surface to achieve the desired roughness. The battery manufacturing method comprises: producing the cap as described; coupling the cap to one end of the housing; inserting at least one electrode cell into the housing; and sealing the cap to enclose the cell.

Proposed is a cooling fin including a cooling plate in which a cooling path is formed, and a support plate connected to each of upper and lower ends of the cooling plate, wherein the cooling plate comprises at least one cooling path configured to allow a cooling fluid to flow inside the cooling plate.

An anode for a lithium secondary battery includes an anode current collector and an anode composite layer disposed on at least one surface of the anode current collector and including a graphite-based anode active material, wherein the anode composite layer includes a first anode composite layer disposed on the anode current collector and a second anode composite layer disposed on the first anode composite layer, the graphite-based anode active material includes artificial graphite and natural graphite, a weight of artificial graphite in the graphite-based anode active material included in the first anode composite layer is greater than a weight of natural graphite, and a weight of natural graphite in the graphite-based anode active material included in the second anode composite layer is greater than a weight of artificial graphite.

A secondary battery is disclosed. According to one aspect of the present disclosure, there is provided a secondary battery comprising a cell assembly comprising battery cells, first and second frames coupled to the battery cells, and a case accommodating the battery cells and the first and second frames, and a housing in which one or more cell assemblies are accommodated, wherein the battery cells are combined with the first frame to form cell units and the cell units are connected to each other by the second frame.

A secondary battery is disclosed. According to one aspect of the present disclosure, there is provided a secondary battery comprising a cell assembly comprising battery cells, a frame combined with the battery cells, and a case accommodating the battery cells and the frame, and a housing in which one or more cell assemblies are accommodated, wherein a plurality of frames are provided and disposed adjacently so as to face each other, so that the battery cells are provided between adjacent frames.

A secondary battery is disclosed. According to one aspect of the present disclosure, there is provided a secondary battery comprising a cell assembly comprising battery cells, first and second frames coupled to the battery cells, and a case accommodating the battery cells and the first and second frames, and a housing in which one or more cell assemblies are accommodated, wherein the first frame comprises a first plate portion and a first support portion protruding from an upper surface of the first plate portion and supporting a side surface of the battery cells, and the second frame comprises a second plate portion and a second support portion protruding from a lower surface of the second plate portion and supporting the side surface of the battery cells.

A secondary battery includes a first electrode assembly including a first electrode tab that includes a plurality of first uncoated portions, each of the first uncoated portions being bent in a first direction, a second electrode assembly stacked on the first electrode assembly in the first direction wherein the second electrode assembly includes a second electrode tab including a plurality of second uncoated portions, each of the second uncoated portions being bent in a direction opposite to the first direction, and a current collector plate electrically connected to the first electrode tab and the second electrode tab and including a slot exposing the first electrode tab and the second electrode tab.

Disclosed are an immersion cooling module and a cooling method. The immersion cooling module includes: a housing containing a cooling fluid at a predetermined level, at least one unit housing accommodated inside the housing so as to be impregnated with the cooling fluid, having a flow passage through which the cooling fluid flows in and out and an open top, and accommodating a battery module, and a condenser coupled to liquefy a gas formed by vaporization of the cooling fluid in the housing and reintroduce the liquefied gas into the housing in a liquid state, wherein opposite sides of the battery module may be spaced apart from respective facing inner sides of the unit housing by a predetermined distance to form a flow path for the cooling fluid, and a porous moisture absorption member attached to each of the opposite sides of the battery module may be further included.

The positive electrode for a lithium secondary battery according to the present disclosure may include: a positive electrode current collector; and a positive electrode active material layer formed on the positive electrode current collector and including a positive electrode active material, wherein the positive electrode active material includes nickel and manganese, a ratio of the content of nickel in the positive electrode active material to the content of manganese in the positive electrode active material is 8 or less, and a particle size distribution of the positive electrode active material defined by the following Equation 1 may be 0.8 or more and/or 1.3 or less. Particle size distribution = D 90 − D 10 / D 50 <img class="EMIRef" id="88a4e979-a5d9-4173-bd6d-76d85edfc93f-ia01" /> (In Equation 1, D10, D50, and D90 are particle diameters of the positive electrode active material particles at points where cumulative volume percentages in a particle size distribution obtained by a particle size analyzer are 10%, 50%, and 90%, respectively.)

A cathode active material precursor for a lithium secondary battery according to embodiments of the present disclosure includes first cathode active material precursor particles, each comprising a core portion and a shell portion, the core portion and the shell portion each comprising one or more transition metals including nickel, and second cathode active material precursor particles comprising one or more transition metals including nickel. A molar fraction of nickel among the transition metals of the second cathode active material precursor particles is uniform throughout the entirety of each of the the second cathode active material precursor particles. A median particle diameter (D₅₀) of the core portion of the first cathode active material precursors particles is greater than a median particle diameter (D₅₀) of the second cathode active material precursor particles.

A cathode active material for a lithium secondary battery is provided, including a lithium metal oxide that satisfies Equation 1 below. Charge transfer resistance R CT ≤ 30 Ω <img class="EMIRef" id="1a693d11-f153-4d78-b8e1-ad8d9e177dd7-ia01" /> (in Equation 1, R<CT> is based on a value measured by electrochemical impedance spectroscopy (EIS) for a half-coin cell including a cathode to which the cathode active material is applied).

A cathode active material for a secondary battery includes lithium metal oxide particles. A difference between a maximum particle diameter (Dmax) and an average particle diameter (D50) of the lithium metal oxide particles is in a range from 5 µm to 12 µm. D10 of the lithium metal oxide particles is greater than 1.8 µm and less than 3 µm. D10 and D50 are particle diameter values at 10% and 50% of a cumulative volume of the lithium metal oxide particles, respectively, from analysis results of a volume cumulative particle size distribution of the lithium metal oxide particles by a laser diffraction method.

The present disclosure relates to a negative electrode for a lithium secondary battery and a method of manufacturing the same. Such a negative electrode for a lithium secondary battery and a method of manufacturing the same are configured such that a surface energy of a surface of the negative electrode for the lithium secondary battery included in the lithium secondary battery is 52 mN/m or more and 68 mN/m or less.

A negative electrode for a secondary battery includes: a current collector; a first negative electrode active material layer formed on the current collector and containing a first active material; and a second negative electrode active material layer formed on the first negative electrode active material layer and containing a second active material, wherein the second active material is a bimodal active material including small particles and large particles having different particle sizes, a particle size (D2) of the second active material is smaller than a particle size (D1) of the first active material, and the particle size of the second active material is an average particle size of the small particles and the large particles.

Method and an apparatus (100) for processing an operation of a virtual HVAC model (121) implemented as a digital twin, for performing temperature control of a cabin of a vehicle, wherein a refrigerant is included in the virtual HVAC model (121), and the refrigerant is configured to comprise at least one of a natural refrigerant, a hydrofluorocarbon (HFC)-based refrigerant, a hydrofluoroolefin (HFO)-based refrigerant, a hydrochlorofluorocarbon (HCFC)-based refrigerant, a hydrocarbon-based refrigerant that is not a natural refrigerant, and a halon or a perfluorocarbon (PFC)-based refrigerant.

Disclosed are a method for controlling heating of an HVAC system for an electric vehicle and an HVAC system thereof, the system comprising a refrigerant, a compressor (120) and a heater core (130), wherein the system is configured to circulate said refrigerant through the compressor (120) and the heater core (130) to perform heating control of the vehicle;wherein the refrigerant comprises at least one selected from the group consisting of a natural refrigerant; a hydrofluorocarbon (HFC)-based refrigerant;a hydrofluoroolefin (HFO)-based refrigerant;a hydrochlorofluorocarbon (HCFC)-based refrigerant;a hydrocarbon-based refrigerant that is not a natural refrigerant; anda halon or a perfluorocarbon (PFC)-based refrigerant.

Proposed is a cathode for a secondary battery, which includes a cathode collector and a cathode mixture layer on the cathode collector, includes: a coating section at which the cathode mixture layer is formed with a uniform thickness; a non-coating section that is disposed on at least one edge of the coating section on the cathode collector and at which the cathode mixture layer is not formed; and a cushioning section at which the cathode mixture layer is formed with a thickness smaller than a thickness of the coating section at a location between the coating section and the non-coating section.

An embodiment of the present disclosure provides an electrolyte for a lithium secondary battery and a lithium secondary battery including the same. According to some embodiments, the electrolyte for a lithium secondary battery may include an additive including a compound having a specific structure, an organic solvent and a lithium salt. Accordingly, a lithium secondary battery including the electrolyte for a lithium secondary battery may exhibit improved cycle life characteristics and high-temperature storage characteristics.

The present disclosure relates to a current collector plate and a battery cell including the same. A current collector plate according to one embodiment of the present disclosure is a disc-shaped current collector plate having a raised surface including a central axis, wherein the current collector plate may include: a raised space formed by the raised surface being raised; a raised opening defining an entrance of the raised space, the area of the raised opening being larger than the area of the raised surface; a connecting surface including an inner surface of the raised space; a base surface including a surface other than the raised surface and the connecting surface; and a plurality of slits.

The present disclosure relates to a battery module (10). More specifically, the present disclosure relates to a battery module (10) with a reinforced welding structure of a case (300) accommodating a cell assembly (100). According to an embodiment of the present disclosure, the battery module (10) with an improved welding quality of the case (300) accommodating the cell assembly (100) can be provided. The battery module (10) according to the present disclosure connects and assembles the case (300) and a bus bar assembly (200) using a fixing module (220) with an adjustable length, and hence can manage a welding gap between a pressurizing case (310) and an insertion case forming the case (300).

A silicon-carbon-containing electrode material according to embodiments of the present disclosure includes a porous carbon structure including pores and a silicon-containing coating layer formed on the porous carbon structure, wherein the peak intensity ratio of the Raman spectrum, expressed as a percentage and as defined by a predetermined equation, is 3% to 18%. Accordingly, the cycle life and capacity characteristics of a lithium secondary battery may be improved.