Abstract: A vehicle power supply device comprises a lithium battery module that includes a plurality of lithium battery cells, first control devices, voltage detection harnesses via which terminal voltages at individual lithium battery cells are input to the first control devices, a second control device and a signal transmission path through which signals are transmitted. The first control device comprises a selection circuit that selects terminal voltages at individual lithium battery cells, a voltage measurement circuit that measures the selected terminal voltages, balancing switches used to discharge individual lithium battery cells, a balancing switch control circuit that controls open/close of the balancing switches, and a diagnosis circuit for detecting an electrically abnormal connection in the detection harnesses.

Abstract: The present invention provides enhanced serial communication reliability in a situation where a plurality of cell controllers and a battery controller are daisy-chained to form a serial communication configuration. While the plurality of cell controllers and the battery controller are daisy-chained to form a serial communication configuration, the battery controller or each cell controller includes a communication speed detection means, which detects the communication speed of data input from an additional controller, and a reception timing correction means, which corrects the reception timing for data input from the additional controller in accordance with the communication speed detected by the communication speed detection means.

Abstract: An automotive power supply system comprises a battery module that includes serially connected battery groups each constituted with serially connected battery cells, integrated circuits each disposed in correspondence to one of the battery groups, a control circuit, a transmission path through which the integrated circuits are connected to the control circuit and a relay circuit via which an electrical current is supplied from the battery module. In response to a start signal instructing an operation start and received via the transmission path, each integrated circuit measures terminal voltages at the individual battery cells in the corresponding battery group and executes an abnormality diagnosis. If abnormality diagnosis results provided by the integrated circuits indicate no abnormality, the control circuit closes the relay, enabling supply of electrical current from the battery module and subsequently, the control circuit receives measurement results from the integrated circuits via the transmission path.

Abstract: A battery control circuit includes a voltage detection circuit for measuring voltages of electric cells, balancing circuits for balancing the voltages or SOCs of the electric cells, a signal input/output circuit for communicating with the outside, a power supply circuit having two modes: a normal mode and a low consumption mode, and a time management circuit. It receives a signal containing a period of time until the shift of the power supply circuit from the normal mode to the low consumption mode, and stores it in the time management circuit. If a command from the outside has not been sent for a predetermined period of time or when an operation stop command has been sent from the outside, the time management circuit causes the power supply circuit to continuously operate in the normal mode.

Abstract: An electric storage device including a state detection unit managing and controlling the state of a battery unit, wherein the state detection unit captures an inter-terminal voltage of each of a plurality of batteries measured by a battery management unit in a no-load state where the battery unit is separated from a load, and calculates variation information about the states of charge of the batteries. In addition, the state detection unit, taking into consideration the variation information about the states of charge of the batteries, calculates allowable charge and discharge information required for controlling the charging and discharging of the battery unit in a loaded state where the battery unit is connected to a load and charged or discharged, and outputs the allowable charge and discharge information to a charge and discharge device in the battery unit.

Abstract: In a status detector for a power supply, a power supply, and an initial characteristic extracting device for use with the power supply, a measuring unit obtains measured values of at least current, voltage and temperature of the electricity accumulating unit. A processing unit executes status detection of the electricity accumulating unit by using the measured values and the characteristic information of the electricity accumulating unit which is stored in a memory unit. A discrepancy detecting unit detects the presence of a discrepancy away from a theoretical value when a result of the status detection is changed over a predetermined threshold or reversed with respect to the measured values. A modifying unit modifies the characteristic information depending on the detected discrepancy.

Abstract: A battery management system which can output a battery state enabling optimum charge and discharge control to be performed even when a temperature variation occurs among individual single cells. A plurality of temperature sensors measure temperature values of a battery. A measurement unit measures a voltage and a current of the battery. A maximum/minimum temperature selection unit in a calculation unit determines a maximum temperature and a minimum temperature from the temperature values measured by the temperature sensors. An available power calculation unit calculates respective values of maximum available charge and discharge powers or maximum available charge and discharge currents of the battery corresponding to the maximum temperature and the minimum temperature based on the voltage and the current of the battery.

Abstract: The present invention provides enhanced serial communication reliability in a situation where a plurality of cell controllers and a battery controller are daisy-chained to form a serial communication configuration. While the plurality of cell controllers and the battery controller are daisy-chained to form a serial communication configuration, the battery controller or each cell controller includes a communication speed detection means, which detects the communication speed of data input from an additional controller, and a reception timing correction means, which corrects the reception, timing for data input from the additional controller in accordance with the communication speed detected by the communication speed detection means.

Abstract: The present invention provides enhanced serial communication reliability in a situation where a plurality of cell controllers and a battery controller are daisy-chained to form a serial communication configuration. While the plurality of cell controllers and the battery controller are daisy-chained to form a serial communication configuration, the battery controller or each cell controller includes a communication speed detection means, which detects the communication speed of data input from an additional controller, and a reception timing correction means, which corrects the reception timing for data input from the additional controller in accordance with the communication speed detected by the communication speed detection means.

Abstract: When detecting an abnormality in some storage batteries, the hybrid vehicle control system separates the faulty storage batteries and leads the sound storage batteries to a high SOC.

Abstract: A state detection device for power supply system comprises: a measurement unit that obtains current, voltage, and temperature at a chargeable and dischargeable power storage unit as measurement values; a storage unit that stores property information of the power storage unit; an arithmetic unit that uses different methods to calculate first and second states of charge for the power storage unit based upon the measurement values and the property information; a conflict detection unit that detects a conflict in an event that a difference between the first state of charge and the second state of charge is equal to or greater than a predetermined threshold; and a correction unit that corrects the property information during charging or discharging of the power storage unit in response to the conflict having been detected by the conflict detection unit.

Abstract: A secondary battery module includes a battery information storage unit for storing electric characteristic information and usage history information of the secondary battery module. A battery information management device and a terminal device respectively include interfaces to be connected to the secondary battery module. The battery information management device is provided with a battery information database. The battery information management device is connected to the terminal device through a communications network. In this way, battery information stored in the battery information storage unit, which is acquired by the battery information management device and the terminal device, is accumulated in the battery information database. Moreover, the battery information management device grades the secondary battery module for reuse based on the battery information and a predetermined threshold.

Abstract: A plurality of resistance value tables of a battery group with respect to temperature and SOC of the assembled battery, which are measured in advance when currents of different change patterns flow in the assembled battery, are stored. A resistance value for the assembled battery is calculated, based upon its voltage and current. From among the plurality of resistance value tables, a resistance value table is selected so that it corresponds to the change pattern of the current flowing in the assembled battery when the voltage and the current of the assembled battery were measured, and a resistance value is searched for from that resistance value table corresponding to the temperature and the SOC of the assembled battery. Then the calculated resistance value and the one from the table are compared to determine the life of the assembled battery.

Abstract: A storage battery managing apparatus which ensures charge-discharge control of a storage battery in consideration of state variation of each unit cell even if the battery pack includes a number of component unit cells, and a vehicle controlling apparatus providing the same. A storage battery includes a plurality of chargeable-dischargeable unit cells connected in which battery management ICs detect the cell voltage of each unit cell, a voltage sensor detects a storage battery voltage and a current sensor detects currents to be charged and discharged in the storage battery. A degree of SOC imbalance is obtained by use of detected cell voltage of each unit cell when the storage battery is being neither charged nor discharged.

Abstract: A secondary battery module includes a battery information storage unit for storing electric characteristic information and usage history information of the secondary battery module. A battery information management device and a terminal device respectively include interfaces to be connected to the secondary battery module. The battery information management device is provided with a battery information database. The battery information management device is connected to the terminal device through a communications network. In this way, battery information stored in the battery information storage unit, which is acquired by the battery information management device and the terminal device, is accumulated in the battery information database. Moreover, the battery information management device grades the secondary battery module for reuse based on the battery information and a predetermined threshold.

Abstract: In a status detector for a power supply, a power supply, and an initial characteristic extracting device for use with the power supply, a measuring unit obtains measured values of at least current, voltage and temperature of the electricity accumulating unit. A processing unit executes status detection of the electricity accumulating unit by using the measured values and the characteristic information of the electricity accumulating unit which is stored in a memory unit. A discrepancy detecting unit detects the presence of a discrepancy away from a theoretical value when a result of the status detection is changed over a predetermined threshold or reversed with respect to the measured values. A modifying unit modifies the characteristic information depending on the detected discrepancy.

Abstract: In a status detector for a power supply, a power supply, and an initial characteristic extracting device for use with the power supply, a measuring unit obtains measured values of at least current, voltage and temperature of the electricity accumulating unit. A processing unit executes status detection of the electricity accumulating unit by using the measured values and the characteristic information of the electricity accumulating unit which is stored in a memory unit. A discrepancy detecting unit detects the presence of a discrepancy away from a theoretical value when a result of the status detection is changed over a predetermined threshold or reversed with respect to the measured values. A modifying unit modifies the characteristic information depending on the detected discrepancy.

Abstract: A battery management system which can output a battery state enabling optimum charge and discharge control to be performed even when a temperature variation occurs among individual single cells. A plurality of temperature sensors measure temperature values of a battery. A measurement unit measures a voltage and a current of the battery. A maximum/minimum temperature selection unit in a calculation unit determines a maximum temperature and a minimum temperature from the temperature values measured by the temperature sensors. An available power calculation unit calculates respective values of maximum available charge and discharge powers or maximum available charge and discharge currents of the battery corresponding to the maximum temperature and the minimum temperature based on the voltage and the current of the battery.

Abstract: A multi-series battery control system comprises battery cell groups each having a plurality of serially connected battery cells, a plurality of integrated circuits each disposed in correspondence to one of the battery cell groups and a battery control device that exchanges signals with the individual integrated circuits. Each integrated circuit includes an address setting means that receives a message unique to the integrated circuit, different from messages sent to other integrated circuits, from the battery control device, writes over an initialized address of the integrated circuit with the message and alters the message to a message with which an initialized address of another integrated circuit cannot be overwritten in a step assigned with an ordinal number matching the position of the integrated circuit with regard to the connection order.

Abstract: A vehicle power supply device comprises a lithium battery module that includes a plurality of lithium battery cells, first control devices, voltage detection harnesses via which terminal voltages at individual lithium battery cells are input to the first control devices, a second control device and a signal transmission path through which signals are transmitted. The first control device comprises a selection circuit that selects terminal voltages at individual lithium battery cells, a voltage measurement circuit that measures the selected terminal voltages, balancing switches used to discharge individual lithium battery cells, a balancing switch control circuit that controls open/close of the balancing switches, and a diagnosis circuit for detecting an electrically abnormal connection in the detection harnesses.