SK On Patente

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.

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.

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.)

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.

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 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.

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).

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.

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.

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.

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).

The present disclosure relates to a cap assembly coupled to a case that accommodates an electrode assembly to cover one open side of the case, the cap assembly comprising: a cap plate including a first hole; a cylindrical terminal portion including an insertion hole and inserted into the first hole to be connected to the electrode assembly; a sheet-shaped first insulating member disposed to face the cap plate; and a heat insulating member disposed between the first insulating member and the terminal portion.

Provided is a secondary battery. According to one aspect of the present disclosure, the secondary battery comprises an electrode assembly accommodated inside a can, a current collector electrically connected to an electrode tab of the electrode assembly, and a rivet fastened to the current collector and functioning as an electrode terminal, wherein the current collector comprises a first coupling sleeve, the rivet comprises a second coupling sleeve fastened to the first coupling sleeve, and the first coupling sleeve is provided to be inserted into and fastened to the second coupling sleeve in a direction corresponding to a central axis of the electrode assembly.

The present disclosure provides an electrode for a secondary battery and a lithium secondary battery including the same. The electrode for a secondary battery according to the present disclosure includes an electrode current collector, and an electrode active material layer disposed on one surface of the electrode current collector, and including an electrode active material and a graphene conductive material. The number of layers of the graphene conductive material, as defined by Equation 1, is 2 to 15. Numberoflayers=Lc/D+1 (in Equation 1, Lc represents a grain size (Å) and D represents a d-spacing (Å), calculated from X-ray diffraction (XRD) analysis results of the graphene conductive material)

Proposed are an additive for a thermal management fluid, the additive including a phosphate-based compound, and a thermal management fluid composition including the same.

Methods for manufacturing an electrode for a lithium secondary battery, electrodes for a lithium secondary battery, and lithium secondary batteries including the electrodes are disclosed. In one embodiment, the method for manufacturing an electrode for a lithium secondary batteries may include: forming an electrode active material layer on at least one side of the electrode current collector, forming a plurality of grooves in the electrode active material layer, and rolling the electrode active material layer that includes the plurality of grooves.

A cathode for a lithium secondary battery includes a cathode current collector; and a cathode mixture layer on at least one surface of the cathode current collector, wherein the cathode mixture layer includes a first cathode mixture layer on the cathode current collector; and a second cathode mixture layer on the first cathode mixture layer, the first cathode mixture layer and the second cathode mixture layer respectively independently include lithium metal phosphate and lithium transition metal oxide as active materials, a weight of the lithium metal phosphate included in the first cathode mixture layer exceeds a weight of the lithium transition metal oxide, the first cathode mixture layer includes a spherical-type conductive material, and the second cathode mixture layer includes a needle-type conductive material.

A pouch type secondary battery is disclosed. One aspect of the present invention provides a pouch type secondary battery including a casing material configured to accommodate an electrode assembly from which electrode tabs are led; and the casing material includes a sealing portion formed on three sides of four sides of the pouch type secondary battery and an close contact portion formed on the remaining one side; and an extending portion protruding perpendicularly with respect to the close contact portion is formed in a portion adjacent to the close contact portion in the sealing portion.

The present disclosure relates to a battery assembly comprising: a plurality of battery cells having a cylindrical shape; a receiving member forming a placement space for receiving the plurality of battery cells; and a receiving case including a receiving space for receiving the plurality of battery cells and the receiving member, a receiving floor forming a bottom surface of the receiving space and including a communication hole, a venting space disposed below the receiving floor, and a communication hole formed on the receiving floor to communicate the receiving space and the venting space.

A battery device includes a cell assembly in which a plurality of battery cells are arranged in a first direction, a case having an accommodation space in which the cell assembly may be accommodated, and a surface pressure member providing surface pressure to the cell assembly, wherein the case may include a partition partitioning the accommodation space, and the surface pressure member accommodates the partition and may be coupled to the partition.

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.

A battery pack includes a cell stack in which a plurality of battery cells are stacked; a pack case accommodating the cell stack therein, a partition member partitioning an internal space of the pack case into a plurality of spaces, and a blocking member disposed between the partition member and the pack case to block heat propagation between the plurality of spaces.

Embodiments of the present disclosure relate to a battery module. According to an embodiment of the present disclosure, there is provided a battery module including a plurality of battery cells each including at least one electrode tab, and a bus bar in contact with the electrode tabs to electrically connect the plurality of battery cells, wherein the bus bar includes a plate in which a plurality of holes are formed, and the electrode tabs are inserted into at least a portion of the plurality of holes to electrically connect the plurality of battery cells.

A battery cell includes a can, an electrode assembly disposed within the can, and including a first electrode plate and a second electrode plate, a terminal portion mounted on the can, a first current collector plate connected to the terminal portion and the first electrode plate, and a second current collector plate connected to the can and the second electrode plate. The first electrode plate includes a first uncoated portion bonded to the first current collector plate. The second electrode plate includes a second uncoated portion bonded to the second current collector plate. The first uncoated portion is surrounded by the second uncoated portion.

A battery cell includes an electrode assembly including an electrode tab, a cell case accommodating the electrode assembly, a cap plate coupled to the cell case, an electrode terminal disposed on the cap plate, and a current collector including a terminal connection portion electrically connected to the electrode terminal and a tab connection portion electrically connected to the electrode tab. The tab connection portion includes a step portion recessed toward the electrode assembly, and the electrode tab is bent to cover an outer surface of the step portion and then welded to the step portion on the outer surface of the step portion.

Disclosed are a method for controlling heating of an HVAC system for an electric vehicle and an HVAC system thereof. According to various embodiments, in an operation of the HVAC system including a main heating unit (141) in which a first refrigerant circulates and an auxiliary heating unit (143) in which a second refrigerant circulates, at least one of the first refrigerant and the second refrigerant may 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. Further disclosed is the use of a HVAC system as disclosed herein in an electric vehicle. Further provided is an electric vehicle, comprising the HVAC system as disclosed herein.

A secondary battery according to various embodiments of the present disclosure includes: a battery can configured to accommodate an electrode assembly; a cap plate including a body part having a shape corresponding to an opening of the battery can and an edge part protruding upward along a perimeter of the body part, the cap plate being coupled to the opening; and a sealing gasket disposed between the battery can and the edge part, wherein the battery can may include a crimping part formed by bending at least a partial section of an upper end portion thereof to surround the edge part.

A multilayered separator for a lithium secondary battery according to embodiments of the present disclosure includes: a porous substrate; a first coating layer disposed on one surface of the porous substrate, and including a first binder, a nitrate compound and a first lithium salt; and a second coating layer disposed on a surface of the porous substrate opposite the surface in contact with the first coating layer, and including a second binder and a second lithium salt.

A secondary battery is disclosed. According to one aspect of the present disclosure, there is provided a secondary battery including: a can including an opening; an electrode assembly including a first hollow and disposed in the can; a cap plate that closes the opening; and an electrode rod extending to pass through the first hollow, wherein the electrode rod includes: a first end portion exposed to the outside of the can and forming an electrode terminal; and a second end portion disposed on an opposite side corresponding to the first end portion.

Provided is a composite electrolyte membrane comprising a porous support including a polymer having a melting point of at least 145°C and a coating layer on at least one side of the support, wherein the coating layer includes a polymer binder and hydrophilic oxide particles. The membrane exhibits high heat resistance and improved ionic conductivity, and is suitable for use in electrochemical devices, such as lithium secondary batteries. Experimental results demonstrate excellent capacity retention, stability, and performance compared to conventional polyolefin-based separators, making the membrane advantageous for high-capacity and high-safety battery applications.

A cell case (100) according to an embodiment of the present disclosure may include: a can (200) having a sidewall (220) and an end plate (210) having an internal space (S) accommodating an electrode assembly (400) formed therein; a cap plate (300) disposed opposite the end plate, coupled to the sidewall, and sealing the internal space; and an electrode terminal (500) extending externally by penetrating through a portion of the can, and the electrode terminal may be coupled to the end plate via an insulating resin member (R).

In a method for manufacturing an electrode for a lithium secondary battery, an electrode mixture is prepared by mixing an electrode active material and a prepolymer binder including a polyvinylidene fluoride (PVDF)-based polymer. The electrode mixture is dry-coated onto an electrode current collector to form a preliminary electrode active material layer. The preliminary electrode active material layer is roll-pressed. An electric field is applied to the preliminary electrode active material layer to form an electrode active material layer. The electrode for a lithium secondary battery exhibits improved elasticity and ionic conductivity, thereby improving the cycle life characteristics and electrical properties of the secondary battery.

A battery device is disclosed, the battery device may include a plurality of cell assemblies including a plurality of battery cells; and a housing accommodating the plurality of cell assemblies therein, wherein upper surfaces of the plurality of cell assemblies may be spaced apart from the housing by a certain distance, a first venting passage may be formed in the housing facing the upper surfaces of the plurality of cell assemblies, and a second venting passage may be formed in a space between first side surfaces of the plurality of cell assemblies and the housing.