Abstract: A method for manufacturing a wiring substrate includes forming conductor pads on a surface of an insulating layer, positioning, on or in the insulating layer, an electronic component having electrode pads, forming a second insulating layer covering the surface of the insulating layer, conductor pads and electronic component, forming first via holes exposing the conductor pads, applying a first desmear treatment to the second insulating layer such that residues are removed from the first via holes, forming second via holes in the second insulating layer after the first desmear treatment such that the second via holes expose the electrode pads of the electronic component positioned on or in the insulating layer, applying a second desmear treatment to the second insulating layer such that residues are removed from the second via holes, forming first via conductors in the first via holes, and forming second via conductors in the second via holes.

Abstract: A wiring substrate includes first conductor pads formed on a surface of an insulating layer, second conductor pads formed on the surface of the insulating layer, a second insulating layer covering the surface of the insulating layer and first and second conductor pads, first via conductors formed in first via holes penetrating through the second insulating layer such that the first via conductors are formed on the first conductor pads, and second via conductors formed in second via holes penetrating through the second insulating layer such that the second via conductors are formed on the second conductor pads. The first and second conductor pads are formed such that an annular width amount of each second conductor pad is smaller than an annular width amount of each first conductor pad and that a haloing amount in each second conductor pad is smaller than a haloing amount in each first conductor pad.

Abstract: A battery pack includes a plurality of bus bars serving to form a plurality of parallel battery structures that each have parallel connection of two or more of a plurality of prismatic batteries. The plurality of bus bars electrically connect the plurality of prismatic batteries to connect the plurality of parallel battery structures in series. The plurality of parallel battery structures connected in series form a battery connection structure that includes a turn causing a reversal of direction of series connection of the plurality of parallel battery structures.

Abstract: Battery pack (10) as an example of an exemplary embodiment includes: a plurality of batteries (50); and case (60) including case body (20) housing the plurality of batteries (50) and case lid (30) covering opening (22) of case body (20). Case (60) is configured such that when the internal pressure increases due to generation of gas, case body (20) and case lid (30) are relatively displaced in directions away from each other and a gas exhaust opening is formed in a state that a coupling between case body (20) and case lid (30) is maintained.

Abstract: A battery pack includes a battery stack having a plurality of prismatic batteries being stacked. The battery pack further includes a cooling plate extending in a stack direction of the prismatic batteries in the battery stack. The cooling plate includes a plurality of coolant passages and a plurality of grooves. The coolant passages extend in a perpendicular direction substantially perpendicular to the stack direction of the prismatic batteries, and allow a coolant to flow in the coolant passages. The grooves constitute heat conduction inhibitors configured to inhibit heat conduction in the stack direction of the prismatic batteries.

Abstract: A cell module includes a plurality of battery cells each having a safety valve at a first end in a height direction, a first current collector plate including a main body having a through hole that at least partly overlaps the safety valve when viewed along the height direction and a lead extending into the through hole from the main body and being electrically connected to a first terminal of each of the battery cells, an exhaust duct disposed over a surface of the first current collector plate remote from the battery cells, and an insulating film being made of an insulating material and covering an area of the first current collector plate facing the exhaust duct. The safety valve opens when an internal pressure of any of the battery cells reaches or exceeds a predetermined level.

Abstract: A device is adapted for use with a battery pack including a plurality of batteries and a case including an exhaust hole and a sealing member closing the exhaust hole, and is configured to discharge gas from case. The device includes: a pedestal on which the battery pack is to be placed; a gas inlet hole formed in the pedestal at a location overlapping the exhaust hole of the battery pack; a discharge duct being a vent path formed in the pedestal and communicating with the gas inlet hole, for guiding the gas discharged from the battery pack to outside of the device; and a pressing part protruding from the gas inlet hole, the pressing part configured to press the sealing member of the battery pack.

Abstract: A solid state battery that includes: a battery element including a positive electrode layer, a negative electrode layer, and a solid electrolyte layer interposed between the positive electrode layer and the negative electrode layer; an end-face electrode facing the end surface of the battery element; a covering layer covering the battery element with the end-face electrode; and an insulating buffer layer between the covering layer and the battery element and surrounding the battery element, wherein the insulating buffer layer is also sandwiched between the battery element and the end-face electrode and arranged intermittently on an end-face electrode facing region side of the end surface of the battery element.

Abstract: An all-solid-state battery that includes a power storage part having a positive electrode layer, a negative electrode layer, and an electrolyte layer interposed between the positive electrode layer and the negative electrode layer; an internal electrode at an end surface of the power storage part; an electrode extraction part electrically connected to the internal electrode; a buffer layer covering the power storage part, the internal electrode, and a first part of the electrode extraction part; a barrier layer covering the buffer layer; and an impact-resistant layer covering the barrier layer such that a second part of the electrode extraction part extends from the impact-resistant layer.

Abstract: A battery pack according to an aspect of the present disclosure includes a secondary battery and a battery case that houses the secondary battery. The battery case includes an exhaust section that exhausts gas exhausted from the secondary battery to outside of the battery case. The exhaust section includes at least one slit that is opened along with deformation of the exhaust section occurring in accordance with an increase in pressure in the battery case. In the exhaust section, the slits preferably reversibly operate due to the pressure in the battery case.

Abstract: A battery case includes: a battery container including a battery containing chamber containing a plurality of batteries, and an inner gas discharge hole for discharging a gas generated in the batteries on at least one side in a height direction of the batteries fixed to the battery containing chamber; and one or more gas exhaust passages including first and second corner passage parts that are located inside an outer wall part including an outer surface in contact with an outer region and outside the battery container and extend along the height direction, and an outer gas discharge hole for discharging the gas to the outside, the one or more gas exhaust passages guiding the gas from the inner gas discharge hole to the outer gas discharge hole.

Abstract: A battery case includes: an inner case that includes an inner gas discharge hole for discharging the gas generated in batteries accommodated in a battery accommodating chamber to the outside of the battery accommodating chamber; an outer case that has an inner case accommodating chamber accommodating the inner case and includes an outer gas discharge hole for discharging the gas to the outside; a plurality of ribs that extend from the outer surface of the inner case to the inner surface of the outer case, to position the inner case with respect to the outer case, and are arranged at intervals from each other; and one or more gas guide passages defined by an outer surface of the inner case, an inner surface of the outer case, and the plurality of ribs and configured to guide a gas from the inner gas discharge hole to the outer gas discharge hole.

Abstract: Provided is a battery pack (10) the reliability of which can be enhanced. This battery pack (10) accommodates a secondary battery (14) inside a case (12). The battery pack includes: an exhaust port (22) that provides communication between an internal space of the case (12) for accommodating the secondary battery (14) and the outside and that discharges gas discharged from the secondary battery (14) from the inner space to the outside; and a heat exchange body (24) that is provided to the exhaust port (22) and is formed of a porous material having a three-dimensional mesh structure so that gas passes therethrough.

Abstract: An all-solid-state battery that includes a battery element and an exterior material covering a surface of the battery element, wherein the exterior material includes one or more glass state materials and one or more crystalline state materials.

Abstract: A solid state battery that includes a solid state battery laminate including a positive electrode layer, a negative electrode layer, and a solid electrolyte layer interposed between the positive electrode layer and the negative electrode layer; and a member surrounding or in contact with the solid state battery, the member containing a moisture absorbing material.

Abstract: A semiconductor package includes a printed wiring board, a logic IC mounted on a first surface of the board, a connector mounted on a second surface of the board on the opposite side with respect to the first surface, an optical element that converts an optical signal and an electrical signal and positioned on the opposite side with respect to the first surface such that the optical element is at least partially embedded in the board, a path that is formed in the board and electrically connects the logic IC on the first surface and the optical element on the opposite side with respect to the first surface, and an optical waveguide that is embedded on the opposite side with respect to the first surface and optically connects the connector on the second surface and the optical element on the opposite side with respect to the first surface.

Abstract: A method for manufacturing a wiring substrate includes forming a resin insulating layer on a first conductor layer such that the resin insulating layer covers the first conductor layer, applying a roughening treatment on a surface of the resin insulating layer on the opposite side with respect to the first conductor layer, forming an opening in the resin insulating layer after the roughening treatment on the surface of the resin insulating layer such that the opening penetrates through the resin insulating layer and exposes a portion of the first conductor layer, and forming a second conductor layer on the surface of the resin insulating layer such that the second conductor layer is formed in contact with the surface of the resin insulating layer and that a via conductor is formed in the opening of the resin insulating layer.

Abstract: A cell module includes a plurality of battery cells each having a safety valve at a first end in a height direction, a first current collector plate including a main body having a through hole that at least partly overlaps the safety valve when viewed along the height direction and a lead extending into the through hole from the main body and being electrically connected to a first terminal of each of the battery cells, an exhaust duct disposed over a surface of the first current collector plate remote from the battery cells, and an insulating film being made of an insulating material and covering an area of the first current collector plate facing the exhaust duct. The safety valve opens when an internal pressure of any of the battery cells reaches or exceeds a predetermined level.

Abstract: A semiconductor package includes a printed wiring board, a logic IC mounted on the printed wiring board, a connector mounted on the printed wiring board, an optical element that is accommodated inside the printed wiring board and converts an optical signal to an electrical signal and/or the electrical signal to the optical signal, an optical waveguide formed between the optical element inside the printed wiring board and the connector on the printed wiring board such that the optical waveguide optically connects the optical element and the connector, and an electrical path formed between the optical element and the logic IC such that the electrical path connects the logic IC and the optical element and that a length of the electrical path is 1 mm or less.