Abstract: An electric junction box is provided. The electric junction box includes a frame configured to accommodate components, and a lower cover assembled to close a lower end opening of the frame. The lower cover includes a first lower cover having a bottom wall, a side wall, and a notch, and a second lower cover having a shape corresponding to the notch and assembled to the first lower cover. The second lower cover includes a side wall, a blow-up preventing wall, and a reinforcing rib.

Abstract: An electric junction box include a tubular frame portion having a main accommodating portion, and a cover portion attached to the frame portion so as to close an opening portion of the frame portion and having a through hole through which an electric wire coupled to the electronic component is inserted. The cover portion includes a first cover portion having a plate-shaped portion disposed to face an opening surface of the opening portion and a first side wall portion erected from a peripheral edge of the plate-shaped portion toward an opening edge of the opening portion, and a second cover portion having a second side wall portion disposed between at least a part of a erecting end of the first side wall portion and the opening edge of the opening portion and a sub accommodating portion provided inside the second side wall portion.

Abstract: An estimation device includes: an acquisition unit that acquires a voltage, a current, and a temperature of a lead-acid battery; a first deriving unit that derives a first SOC and a second SOC that are SOCs of a start point and an end point of an estimation period; a second deriving unit that derives a total amount of an overcharge amount in the estimation period; a third deriving unit that derives an actual measurement error based on a difference between the first SOC and the second SOC and the total amount of the overcharge amount; a first specification unit that specifies an estimation error based on the first SOC, the second SOC, and the temperature, and a relationship between the first SOC, the second SOC, and the temperature of the lead-acid battery, and the estimation error; a second specification unit that specifies an abnormality degree of the actual measurement error based on the derived actual measurement error and the specified estimation error; and an estimation unit that estimates generation of

Abstract: An interconnect substrate includes an insulating layer, a dispersion layer, and an interconnect layer, the insulating layer, the dispersion layer, and the interconnect layer being laminated together, wherein the dispersion layer includes a main material and one or more fillers dispersed in the main material, the one or more fillers forming a unique dispersion pattern, and wherein the unique dispersion pattern is identifiable by image recognition from outside of the interconnect substrate.