Abstract: A fiber-reinforced shaped article in which a reinforcing fiber bundle aggregate formed of a plurality of reinforcing fiber bundles converged is impregnated with an epoxy resin composition and the epoxy resin composition is cured, wherein the epoxy resin composition contains at least components [A], [B], [C], and [D], and a quantity of [A] is 60 to 100 parts by mass per 100 parts by mass of all epoxy resin contained in the epoxy resin composition: [A]: aminophenol type epoxy resin; [B]: two kinds of acid anhydrides of [B1]: acid anhydride having a nadic anhydride structure, and [B2]: acid anhydride having a hydrogenated structure of phthalic anhydride; [C]: at least one filler having a Mohs hardness of 3 or less selected from the group consisting of a silicon compound, a magnesium compound, a calcium compound, an aluminum compound, and inorganic carbon; [D]: a release agent.

Abstract: A fiber-reinforced shaped article in which a reinforcing fiber bundle aggregate formed of a plurality of reinforcing fiber bundles converged is impregnated with an epoxy resin composition and the epoxy resin composition is cured, wherein the epoxy resin composition contains at least components [A], [B], [C], and [D], and a quantity of [A] is 60 to 100 parts by mass per 100 parts by mass of all epoxy resin contained in the epoxy resin composition: [A]: aminophenol type epoxy resin; [B]: two kinds of acid anhydrides of [B1]: acid anhydride having a nadic anhydride structure, and [B2]: acid anhydride having a hydrogenated structure of phthalic anhydride; [C]: at least one filler having a Mohs hardness of 3 or less selected from the group consisting of a silicon compound, a magnesium compound, a calcium compound, an aluminum compound, and inorganic carbon; [D]: a release agent.

Abstract: The molded article includes a fiber-reinforced composite material and a film of a resin composition on a surface of the fiber-reinforced composite material prepared by curing the resin composition, wherein the resin composition includes components [A] to [C]: component [A]: an aliphatic epoxy resin, component [B]: a thiol compound, and component [C]: a quaternary phosphonium salt.

Abstract: According to an embodiment, a battery monitoring device monitors voltage of a battery cell via a first filter circuit connected to both ends of the battery cell and a second filter that is located in a subsequent stage of the first filter circuit and includes a plurality of voltage measurement paths for the battery cell. The battery monitoring device includes a multiplexer to selectively switch a plurality of voltage measurement paths, an AD converter to convert, into a digital signal, an analog signal transmitted on the voltage measurement path selected by the multiplexer, and a digital filter circuit to perform filtering that removes a frequency component higher than a predetermined frequency component, on the digital signal.

Abstract: A battery cell monitoring system includes multiple battery monitoring circuits, each connected to a corresponding battery cell, and a microcomputer for controlling the monitoring circuits. The battery monitoring circuits include a data output circuit that outputs a data signal corresponding to the monitoring results for the battery cell monitored thereby and a multiplexer that outputs either the monitoring results received from the data output circuit or monitoring results received from another battery monitoring circuit. The battery cell monitoring circuit includes a flip-flop circuit receiving a clock signal and the signal output from the multiplexer which is latched in synchronization with the clock signal.

Abstract: An assembled battery module includes battery cells connected in series, resistors, a voltage measuring unit, failure detection switches, and a control unit. Each resistor is connected between a positive or negative electrode of the corresponding battery cell and a corresponding node for the positive or negative electrode. Each failure detection switch is connected between the two nodes corresponding to positive and negative electrodes of a battery cell to allow on-off switching between the two nodes. The control unit detects a disconnection between a positive or negative electrode of a battery cell to a corresponding node based on first and second voltages measured between two nodes, the first voltage being measured when one of the two failure detection switches connected to the corresponding node is switched from on to off and the second voltage being measured when the other failure detection switch is switched from on to off.

Abstract: A battery cell monitoring system includes multiple battery monitoring circuits, each connected to a corresponding battery cell, and a microcomputer for controlling the monitoring circuits. The battery monitoring circuits include a data output circuit that outputs a data signal corresponding to the monitoring results for the battery cell monitored thereby and a multiplexer that outputs either the monitoring results received from the data output circuit or monitoring results received from another battery monitoring circuit. The battery cell monitoring circuit includes a flip-flop circuit receiving a clock signal and the signal output from the multiplexer which is latched in synchronization with the clock signal.

Abstract: According to one embodiment, a constant current circuit, including A constant current circuit, a current mirror circuit generating an output current, an external terminal to which an external resistance is connected, a reference current to be supplied to the current mirror circuit depending on the external resistance, a first detection circuit detecting an open state of the external terminal, and an alternative circuit supplying an alternative current corresponding to the reference current into the current mirror circuit when the first detection circuit detects the open state.