摘要:
A battery information acquiring apparatus includes a voltage acquiring unit which acquires an inter-terminal voltage of the battery cell; a battery information acquiring circuit which acquires battery information of the battery cell with the acquired voltage being supplied as a first power supply voltage and; a radio circuit which transmits a signal of the battery information to the management unit via the antenna with the acquired voltage being supplied as a second power supply voltage and; a rectification circuit which receives a radio signal from the management unit via the antenna, rectify the received radio signal and generate a DC voltage; and a control circuit which controls supply of the first and second power supply voltages to the battery information acquiring circuit and the radio circuit wherein the control circuit operates with the generated DC voltage being supplied as a third power supply voltage.
摘要:
A battery information acquiring apparatus includes a voltage acquiring unit which acquires an inter-terminal voltage of the battery cell; a battery information acquiring circuit which acquires battery information of the battery cell with the acquired voltage being supplied as a first power supply voltage and; a radio circuit which transmits a signal of the battery information to the management unit via the antenna with the acquired voltage being supplied as a second power supply voltage and; a rectification circuit which receives a radio signal from the management unit via the antenna, rectify the received radio signal and generate a DC voltage; and a control circuit which controls supply of the first and second power supply voltages to the battery information acquiring circuit and the radio circuit wherein the control circuit operates with the generated DC voltage being supplied as a third power supply voltage.
摘要:
There is an apparatus includes a voltage acquiring unit which acquires an inter-terminal voltage of the battery cell; a battery information acquiring circuit which acquires battery information of the battery cell with the acquired voltage being supplied as a power supply voltage and; a transformer configured to have a primary winding and a secondary winding, the primary winding being connected to a common wire; a communication circuit which transmits a signal of the battery information to a management unit, supplied with the acquired voltage as a power supply voltage; a rectification circuit which rectifies a signal of a predetermined frequency from the management unit to generate a DC voltage; and a control circuit which controls the supply of the power supply voltages to the battery information acquiring circuit and the communication circuit, the control circuit being supplied with the DC voltage as a power supply voltage.
摘要:
A voltage measuring device includes a sample-and-hold circuit which alternates between (a) a sample mode in which a signal input from a cell to be measured is sampled so that a voltage across a first capacitor becomes equal to a voltage across the cell to be measured, and a voltage across a second capacitor having its one end connected to one end of the first capacitor becomes equal to zero volts and (b) a hold mode in which the connection between the first and second capacitors is opened, the first capacitor establishes a connection between an inverting input terminal and a non-inverting output terminal of an operational amplifier, and the second capacitor establishes a connection between a non-inverting input terminal and an inverting output terminal of the operational amplifier, and an analog-to-digital converter which converts a signal output from the operational amplifier into a digital signal.
摘要:
A protection device for an assembled battery includes a sampling capacitor, first switches and second switches to sample the voltages of the battery cells and hold the voltages in the capacitor, a detection unit which detects the voltages of the battery cells based on the voltage sampled by any one of the first switches and the second switches and held on the capacitor and output the detected value, a computing unit which computes an average value of the detected values, a comparator which compares the detected value with the average value so as to obtain a result of comparison indicating a relation in size between the both, and a controller which controls the first switches and the second switches, for the second switches to sample if the detected value obtained by sampling by the first switches is higher than the average value according to the comparison result.
摘要:
A protection device for an assembled battery includes a sampling capacitor, first switches and second switches to sample the voltages of the battery cells and hold the voltages in the capacitor, a detection unit which detects the voltages of the battery cells based on the voltage sampled by any one of the first switches and the second switches and held on the capacitor and output the detected value, a computing unit which computes an average value of the detected values, a comparator which compares the detected value with the average value so as to obtain a result of comparison indicating a relation in size between the both, and a controller which controls the first switches and the second switches, for the second switches to sample if the detected value obtained by sampling by the first switches is higher than the average value according to the comparison result.
摘要:
In an assembled battery system, parallel battery blocks are connected in series. Each of the battery blocks includes battery unit modules connected in parallel, and each of the modules includes a battery unit and a fuse connected in series. The battery block is provided with a common connection line connected to a fuse monitoring module, and MOS-FETs each having a gate, source and drain, wherein the fuse is connected between the gate and source, and the drain is connected to the connection line. The FET is turned on and a voltage is applied to the connection line through the FET from the battery unit, when the fuse is blown out. Thus, the fuse monitoring module can detects the blowout of the fuse, and a control module can turn off a control switch to stop charging/discharging of the assembled battery in accordance with the control signal from the fuse monitoring module.
摘要:
In an assembled battery system, parallel battery blocks are connected in series. Each of the battery blocks includes battery unit modules connected in parallel, and each of the modules includes a battery unit and a fuse connected in series. The battery block is provided with a common connection line connected to a fuse monitoring module, and MOS-FETs each having a gate, source and drain, wherein the fuse is connected between the gate and source, and the drain is connected to the connection line. The FET is turned on and a voltage is applied to the connection line through the FET from the battery unit, when the fuse is blown out. Thus, the fuse monitoring module can detects the blowout of the fuse, and a control module can turn off a control switch to stop charging/discharging of the assembled battery in accordance with the control signal from the fuse monitoring module.
摘要:
An assembled battery system includes an assembled battery including a plurality of electric cell blocks connected in series, the electric cell blocks each including at least one nonaqueous electrolyte secondary battery provided with a negative electrode current collector formed of aluminum or an aluminum alloy, a voltage measuring unit configured to measure a plurality of voltages of the electric cell blocks, a controller which controls charge/discharge of the assembled battery in accordance with the measured voltages, and bypass circuits connected in parallel to the electric cell blocks, the bypass circuits each bypassing a current that flows from a negative electrode of one of the electric cell blocks to a positive electrode of the one of electric cell blocks when the measured voltage of the one of electric cell blocks is a negative value not greater than a threshold value.
摘要:
An assembled battery system includes an assembled battery including a plurality of electric cell blocks connected in series, the electric cell blocks each including at least one nonaqueous electrolyte secondary battery provided with a negative electrode current collector formed of aluminum or an aluminum alloy, a voltage measuring unit configured to measure a plurality of voltages of the electric cell blocks, a controller which controls charge/discharge of the assembled battery in accordance with the measured voltages, and bypass circuits connected in parallel to the electric cell blocks, the bypass circuits each bypassing a current that flows from a negative electrode of one of the electric cell blocks to a positive electrode of the one of electric cell blocks when the measured voltage of the one of electric cell blocks is a negative value not greater than a threshold value.