Samsung SDI

The present invention relates to a secondary battery and a method of fabricating the secondary battery. The secondary battery of includes a case, an electrode assembly accommodated within the case, and a first insulating plate located exterior to the electrode assembly, the first insulating plate comprising a core portion and an insulating portion, the insulating portion having a rigidity less than a rigidity of the core portion, the insulating portion comprising an insulating material, the insulating portion surrounding the core portion.

The present disclosure refers to a battery system (10) including a battery housing (11) including a top cover (20), a plurality of battery cells (12) accommodated within the battery housing (11), wherein each of the battery cells (12) includes a venting side (13) with a venting exit (14) for allowing a venting gas stream (V) to exit the battery cells (12) in case of a thermal runaway (TR), the venting sides (13) facing the top cover (20), at least one pipe (30, 30') filled with a liquid and extending across the battery cells (12) at their venting sides (13), wherein the at least one pipe (30, 30') is configured to rupture and expel the liquid when exerted to the venting gas stream (V), a plurality of cell spacers (40) alternatingly stacked with the battery cells (12), each cell spacer (40) being adapted to absorb the liquid expelled by the at least one pipe (30, 30').

Disclosed are an electrolyte storage device and a method of manufacturing the electrolyte storage device, and more particularly, an electrolyte storage device configured such that a fine pattern is formed inside the electrolyte storage device to increase surface hydrophobicity, thereby preventing an electrolyte from adhering to the electrolyte storage device, and a method of manufacturing the electrolyte storage device.

The invention relates to a secondary battery (100), a secondary battery module (200), and a method for manufacturing the secondary battery module (200). The secondary battery (100) includes an electrode assembly (110) including a positive electrode and a negative electrode, a case (120) configured to accommodate the electrode assembly (110), and a bending portion (130) formed on a bottom portion of the case (120).

Disclosed is an apparatus (200) for measuring thermal conductivity of a secondary battery (10) using a detachable jig. The thermal conductivity measurement apparatus (200) includes: a plurality of independent thermal conduction blocks (210) arranged to correspond to respective surfaces of the secondary battery (10); a heat source (220) attached to at least one of the thermal conduction blocks (210); and an insulation unit (230) configured to enclose peripheries of the thermal conduction blocks (210). The thermal conduction blocks (210) are configured to independently measure thermal conductivities of the respective surfaces of the secondary battery (10).

An apparatus for manufacturing a separator for a rechargeable battery, a method of manufacturing a separator for a rechargeable battery, and a rechargeable battery are provided. The separator includes a porous substrate and a coating layer formed on at least one surface of the porous substrate. The apparatus includes a drying unit of a coating film for the coating layer, wherein the drying unit includes a drying oven providing a drying space for the coating film for the coating layer, and an injector located in the drying oven and having an injection plate having a plurality of discharge holes which inject hot air toward the coating film for the coating layer.

The present disclosure relates to a composite substrate for a deposition-type negative electrode, a negative electrode including the composite substrate, and a rechargeable lithium battery including the composite substrate. The composite substrate includes an elastic layer, and a metal layer on the elastic layer. The elastic layer includes a polymer foam and a carbon-based conductive material.

The present invention relates to systems (1) and method for temperature prediction for secondary battery. A system (1) may include: a storage device (11, 21, 25) configured to store a plurality of first data sets related to heat transfer of at least one battery; and a control device (13, 24, 27) configured to generate a plurality of second data sets by performing dimensionless conversion on the plurality of first data sets, and train an artificial neural network-based temperature prediction model based on the plurality of second data sets, wherein temperature of a target battery is predicted based on the artificial neural network-based temperature prediction model, and an aspect of the target battery is modified based on the temperature.

A wireless security device and method and a battery pack may be provided. The wireless security device comprises: a plurality of antennas associated with a battery management system, BMS; an angle-of-arrival estimator configured to estimate an angle of arrival from a signal received through at least one antenna among the plurality of antennas and calculate a reliability index for the angle of arrival; a beam forming controller configured to calculate a beam forming weight and control a phase and an amplitude of the signal based on the beam forming weight; a channel estimator configured to estimate a channel state of the signal and calculate a channel change rate based on the channel state; and an anomaly detector configured to perform anomaly detection for the signal based on the channel state, the channel change rate, the angle of arrival, and the beam forming weight.

The present disclosure relates to a positive electrode for a rechargeable lithium battery, a rechargeable lithium battery including the positive electrode, and a method for manufacturing a positive electrode for a rechargeable lithium battery. The positive electrode includes a positive electrode current collector, a first positive electrode active material layer on the positive electrode current collector, and a second positive electrode active material layer on the first positive electrode active material layer. At least one of the first and second positive electrode active material layers includes a first particle and a second particle, wherein an amount of the first particle in the first positive electrode active material layer is in a range of about 55 wt% or more, and an amount of the second particle in the second positive electrode active material layer is in a range of about 55 wt% or more.