Abstract: A semiconductor chip includes a semiconductor substrate having a first surface and a second surface opposite to the first surface. An active layer is disposed in a portion of the semiconductor substrate adjacent to the first surface. A through electrode extends in the semiconductor substrate in a vertical direction. The through electrode has a lower surface connected to the active layer and an upper surface positioned at a level lower than a level of the second surface of the semiconductor substrate. A passivation layer is disposed on the second surface of the semiconductor substrate. A bonding pad is arranged on a portion of the passivation layer and the upper surface of the through electrode. The bonding pad has a cross-section with a “T” shape in the vertical direction. The bonding pad is connected to the through electrode.

Abstract: Provided is a copper paste for pressure bonding, the copper paste at least containing two or more copper powders having different shapes and/or particle sizes and a solvent. The copper paste has a viscosity of 10 Pa·s or more and 200 Pa·s or less. The ratio of the total mass of the two or more copper powders to the mass of the copper paste, A, is 0.60 or more and less than 0.82. When the index of bulkiness, H, is defined as H=C/(A×B), H is 0.75 or more and 1.00 or less, wherein A is as defined above, B represents the film thickness of a coating film formed by applying the copper paste to a substrate, and C represents the film thickness of a dried coating film formed by drying the coating film in an air atmosphere at 110° C. for 20 minutes.

Abstract: A multi-chip package comprising an interconnection substrate; a first semiconductor IC chip over the interconnection substrate, wherein the first semiconductor IC chip comprises a first silicon substrate, a plurality of first metal vias passing through the first silicon substrate, a plurality of first transistors on a top surface of the first silicon substrate and a first interconnection scheme over the first silicon substrate, wherein the first interconnection scheme comprises a first interconnection metal layer over the first silicon substrate, a second interconnection metal layer over the first interconnection layer and the first silicon substrate and a first insulating dielectric layer over the first silicon substrate and between the first and second interconnection metal layers; a second semiconductor IC chip over and bonded to the first semiconductor IC chip; and a plurality of second metal vias over and coupling to the interconnection substrate, wherein the plurality of second metal vias are in a space

Abstract: A chip package includes an interposer comprising a silicon substrate, multiple metal vias passing through the silicon substrate, a first interconnection metal layer over the silicon substrate, a second interconnection metal layer over the silicon substrate, and an insulating dielectric layer over the silicon substrate and between the first and second interconnection metal layers; a field-programmable-gate-array (FPGA) integrated-circuit (IC) chip over the interposer; multiple first metal bumps between the interposer and the FPGA IC chip; a first underfill between the interposer and the FPGA IC chip, wherein the first underfill encloses the first metal bumps; a non-volatile memory (NVM) IC chip over the interposer; multiple second metal bumps between the interposer and the NVM IC chip; and a second underfill between the interposer and the NVM IC chip, wherein the second underfill encloses the second metal bumps.

Abstract: The present invention relates to a method of preparing a positive electrode which includes forming a solid electrolyte by mixing a lithium salt and a polymer for a solid electrolyte in a dry atmosphere, forming a dry mixture by stirring after adding a conductive agent and a positive electrode active material to the solid electrolyte in a dry atmosphere, and pressing after coating a current collector with the dry mixture.

Abstract: In a method of preparing an anode composition, a first graphite-based active material and a first binder are mixed to form a first mixture. A second graphite-based active material different from the first graphite-based is mixed with a second binder different from the first binder to form a second mixture. The first mixture and the second mixture are mixed to form an anode composition.

Abstract: A negative active material composite includes a core and a coating layer surrounding the core. The core includes crystalline carbon, amorphous carbon, and silicon nanoparticles, the coating layer includes amorphous carbon, and an adjacent distance between the silicon nanoparticles is less than or equal to about 100 nm.

Abstract: The present invention relates to nanostructured materials (including nanowires) for use in batteries. Exemplary materials include carbon-comprising, Si-based nanostructures, nanostructured materials disposed on carbon-based substrates, and nanostructures comprising nanoscale scaffolds. The present invention also provides methods of preparing battery electrodes, and batteries, using the nanostructured materials.

Abstract: A battery manufacturing system manufactures a battery material by sequentially subjecting a predetermined raw material to a plurality of different processing steps and includes a plurality of processing blocks and a connecting block. The processing blocks each include a processing space which is cut off from outside air, a receiving port which receives a predetermined material into the processing space, and a sending port which sends out a product having been produced by subjecting the material received from the receiving port to predetermined processing. A connecting block includes at least an intermediate unit which cuts off a space from the sending port included in the processing block on an upstream side to the receiving port included in the processing block on a downstream side from outside air and which is flexible enough to follow a change in relative positions of the sending port and the receiving port.

Abstract: An apparatus (100) for making a coil (B) comprises a feed unit (2) configured to feed at least one strip-shaped article (N) and a winding unit (1). The winding unit includes a plurality of winding heads (10) and a movement device (3) of said winding heads (10) configured to displace said winding heads (10) according to a trajectory that includes at least one rotation around a rotation axis (C) of said movement device (3), said rotation axis (C) being different from said winding axis (X) and a translation and/or a rotation about a further axis, different from said rotation axis (C) and from said winding axis (X).

Abstract: A power storage cell includes: an electrode body in which a sheet member is wound so as to surround a winding axis; and a case in which the electrode body is housed, in which: the sheet member includes an electrode sheet and a separator; the electrode sheet includes a current collector plate and an electrode composite material layer fabricated on the current collector plate; the electrode sheet includes a groove portion extending in a direction of the winding axis, in which the electrode composite material layer is not fabricated; a plurality of the groove portions is fabricated in a direction in which the electrode sheet extends; and an interval between the groove portions on a winding inner side is smaller than an interval between the groove portions on a winding outer side.

Abstract: An all-solid-state secondary battery includes a plurality of unit cells each including a stack of a negative electrode, a solid electrolyte layer, and a positive electrode; and a plurality of ceramic insulating layers, the plurality of ceramic insulating layers being between the negative electrodes of adjacent unit cells of the plurality of unit cells, and on the negative electrodes at outermost sides of the plurality of unit cells.

Abstract: Embodiments of a method for the preparation of an electrode assembly, include removing a population of negative electrode subunits from a negative electrode sheet, the negative electrode sheet comprising a negative electrode sheet edge margin and at least one negative electrode sheet weakened region that is internal to the negative electrode sheet edge margin, removing a population of separator layer subunits from a separator sheet, and removing a population of positive electrode subunits from a positive electrode sheet, the positive electrode sheet comprising a positive electrode edge margin and at least one positive electrode sheet weakened region that is internal to the positive electrode sheet edge margin, and stacking members of the negative electrode subunit population, the separator layer subunit population and the positive electrode subunit population in a stacking direction to form a stacked population of unit cells.

Abstract: Disclosed in the present application are a power tool and a discharging system. A battery pack includes a first positive terminal, a first negative terminal, a first controller, and a first state detection terminal. The power tool includes a second positive terminal, a second negative terminal, a second controller, a power supply module for supplying power to the second controller, and a power-on module connected to the power supply module. When the battery pack is connected to the power tool by insertion, the power-on module is connected to the first state detection terminal; and the first state detection terminal controls on/off of the power-on module according to the state of the battery pack, so as to control whether to power on the power tool.

Abstract: A battery management apparatus includes a first relay configured to connect a first end of a battery pack to a first end of a load, a second relay configured to connect a second end of the battery pack to a second end of the load, a sensor configured to measure a voltage of the battery pack and a voltage of the load, and a controller configured to control operations of the first relay and the second relay and receive a measurement of the voltage of the battery pack or the voltage of the load based on the operations of the first relay and the second relay.

Abstract: A cooling system is disclosed. The cooling system can include a flow path including a main path and a secondary path. The secondary path can have an inlet and an outlet. The inlet can be in fluid communication with a first portion of the main path and the outlet can be in fluid communication with a second portion of the main path. The cooling system can include a passive fluid flow controller. The passive fluid flow controller can be positioned in the main path between the first portion and the second portion. The passive fluid flow controller can adjust an amount of a coolant that is routed to the secondary path from the main path through the inlet of the secondary path. The passive fluid flow controller can impede a particle from entering the secondary path via the inlet of the secondary path.

Abstract: A heat transfer suppression sheet contains a first inorganic fiber having a glass transition point of 800° C. or lower and/or a first inorganic particle having a glass transition point of 800° C. or lower; a second inorganic fiber having a glass transition point of 1000° C. or higher; a second inorganic particle having a glass transition point of 1000° C. or higher; and an organic binder.

Abstract: The present disclosure relates to a secondary battery, a method for manufacturing the same, and a battery pack including the same. The secondary battery according to an aspect of the present disclosure may include: an electrode assembly extending in a first direction; an exterior film surrounding a portion of the electrode assembly; and a pair of caps covering a remaining portion of the electrode assembly, wherein each cap may include: a cover part that covers one side of the electrode assembly in the first direction; a connection part including a coupling portion provided on an outer surface of the cover part and coupled to the exterior film; and a terminal part, wherein at least a portion of the terminal part is exposed outside of the cover part and is electrically connected to the electrode assembly.

Abstract: A secondary battery includes: an electrode assembly; a case accommodating the electrode assembly; a cap plate coupled to an opening in the case; and a spacer in the case. A vent part is provided in the surface of the case which is opposite to the cap plate, and the spacer is accommodated in the case between a lower portion of the electrode assembly and the vent part. The spacer has: a surface portion contacting the electrode assembly and a space portion below the surface portion; an opening in an area of the surface portion corresponding to the vent part; and a gas discharge hole extending around the opening. Gas generated in the case is discharged to the outside through the vent part via the space portion and the gas discharge hole in the spacer.

Abstract: An electronic device is provided. The electronic device includes a first housing forming at least a part of a side surface of the electronic device, wherein a first opening is formed in the first housing, a first conductive structure formed on the inside the first opening, and an antenna module, wherein the antenna module includes a printed circuit board (PCB), a plurality of conductive patches disposed on the PCB to face the first opening, and a wireless communication circuit, wherein, as the wireless communication circuit is configured to feed power to the plurality of conductive patches, a first electric path is formed in the first conductive structure which is spaced apart from the plurality of conductive patches, and wherein a radio frequency (RF) signal generated based on the first electric path is radiated to an outside of the electronic device.