Abstract: A battery pack and a method of diagnosing a failure of an overcurrent detection circuit are provided to diagnosing the overcurrent detection circuit so as to maintain the overcurrent detection circuit in a safe state. A detection signal output from a current detection element connected to an output side of a battery unit is compared with a threshold value. An overcurrent is detected when the detection signal indicates an overcurrent value exceeding the threshold value. In the method, a failure of the overcurrent detection circuit is detected by inputting an overcurrent diagnostic signal to the overcurrent detection circuit.

Abstract: A battery pack includes a rechargeable battery, a charge FET including a parallel diode connected in series with the battery, and a control circuit configured to control turning on and off of the charge FET. The control circuit includes a discriminating circuit configured to detect a bicycle-mounted state and a charger-connected state, and a memory configured to store a full charge voltage of the battery. The control circuit is configured to, while the discriminating circuit detects the bicycle-mounted state. turn off the charge FET. The control circuit is configured to, while the discriminating circuit detects the charger-connected state, stop charging the battery by switching the charge FET to turn off the charge FET upon detecting that a voltage of the battery charged by a charger becomes higher than the full charge voltage.

Abstract: An object of the present invention is to provide a battery pack and a battery system capable of reducing unnecessary power loss upon reducing the variation in the state of charge that has occurred between a plurality of secondary batteries in an assembled battery in which the secondary batteries are connected in series-parallel. The battery pack and the battery system include a switching element Q11 for opening/closing the charging path of a battery pack B1, a switching element Q12 for opening/closing the discharging path of the battery pack B1, a switching element Q21 for opening/closing the charging path of a battery pack B2, and a switching element Q22 for opening/closing the discharging path of the battery pack B2. When the battery pack B1 is charged, the switching elements Q12, Q21 are turned OFF and the switching element Q11 is turned ON until the secondary batteries B11, B12 are fully charged.

Abstract: A power supply apparatus includes: a plurality of batteries; a changeover portion switching the connection between the plurality of batteries; a short-circuit battery detection portion, if an internal short-circuit is produced in any of the plurality of batteries, detecting this internal short-circuit battery; and a changeover control portion, if the short-circuit battery detection portion detects the internal short-circuit battery, allowing the changeover portion to switch the connection between the plurality of batteries in such a way that this internal short-circuit battery and at least one of the other batteries are connected in series to thereby form a closed circuit.

Abstract: An organism information detecting apparatus includes a detector that detects organism information of a subject for a predetermined sampling time period, determines a motion state of the subject when the organism information is detected, and outputs an organism signal. A first calculator processes the organism signal to calculate organism information data, the detector determining a reliability degree of the organism information data based on whether the determined motion state of the subject is a previously determined motion state. A second calculator calculates an average value of the amount of variation per time of data obtained by digitizing the organism signal, the average value being data supplementary to the organism information data. The detector determines the motion state of the subject based on whether the supplementary data exceeds a previously determined threshold.

Abstract: An object of the present invention is to provide a battery pack and a battery system capable of reducing unnecessary power loss upon reducing the variation in the state of charge that has occurred between a plurality of secondary batteries in an assembled battery in which the secondary batteries are connected in series-parallel. The battery pack and the battery system include a switching element Q11 for opening/closing the charging path of a battery pack B1, a switching element Q12 for opening/closing the discharging path of the battery pack B1, a switching element Q21 for opening/closing the charging path of a battery pack B2, and a switching element Q22 for opening/closing the discharging path of the battery pack B2. When the battery pack B1 is charged, the switching elements Q12, Q21 are turned OFF and the switching element Q11 is turned ON until the secondary batteries B11, B12 are fully charged.

Abstract: An independent power system has a power source control unit for controlling discharge of a storage battery to a connection terminal, a first electricity supply unit for supplying electricity generated by a solar battery to the power source control unit as an operation power, a second electricity supply unit for supplying electricity stored in the storage battery to the power source control unit as the operation power, and a switching element for inhibiting the second electricity supply unit from supplying the operation power to the power source control unit when the terminal voltage of the storage battery is less than an operational voltage threshold. During a period in which the switching element is off and stops operating, when the electricity generated by the solar battery is supplied by the first electricity supply unit, the power source control unit is activated to turn on the switching element.

Abstract: A power supply apparatus includes: a plurality of batteries; a changeover portion switching the connection between the plurality of batteries; a short-circuit battery detection portion, if an internal short-circuit is produced in any of the plurality of batteries, detecting this internal short-circuit battery; and a changeover control portion, if the short-circuit battery detection portion detects the internal short-circuit battery, allowing the changeover portion to switch the connection between the plurality of batteries in such a way that this internal short-circuit battery and at least one of the other batteries are connected in series to thereby form a closed circuit.

Abstract: The invention relates to an organism information detecting apparatus capable of determining a motion state of a subject when organism information is detected. The organism information detecting apparatus of the invention includes organism information detecting means for detecting organism information of the subject by being brought into contact with the subject by a previously determined sampling time period and outputting an organism signal, organism information data calculating means for calculating an organism information data by processing the organism signal, supplementary data calculating means for calculating an average value of a variation amount per time of a data constituted by digitizing the organism signal as a supplementary data of the organism information data, and data storing means for relating the organism information data and the supplementary data to be stored.

Abstract: An organism information measuring device has two light irradiating parts that irradiate light of short and long wavelength, respectively, toward an organism, and two light receiving parts that receive backward scattered light from the organism and produce organism information signals according to the quantity of received light. A data processor determines organism information indicative of a condition of the organism based on the organism information signals. The two light irradiating parts may be combined into a single light irradiating part, with one of the light receiving parts disposed farther from the light irradiating part than the other and having a light receiving area larger in size than that of the other and proportional to the distance thereof from the light irradiating part.

Abstract: To improve an S/N ratio and increase a measurement accuracy of an organism information.

Abstract: A condition monitoring system has a living body information measuring terminal that measures living body information, a living body information receiving terminal for receiving a measurement result and analyzing a condition of a subject, and a monitoring terminal that monitors the condition of the subject. The method of analysis processing performed by the condition monitoring system is changed in response to requests from the subject.