摘要:
Remaining capacity calculation section (110) calculates remaining capacities for each of cells (300-1) and (300-2) connected in parallel with each other, and control section (130) discharges one of cells (300-1) and (300-2) having priority until the remaining capacity of that cell becomes equal to a second threshold value stored in storage section (120), if the remaining capacity of the one of the cells calculated by remaining capacity calculation section (110) is equal to a first threshold value stored in storage section (120).
摘要:
A power storage system includes a plurality of secondary battery packs and an upper controller. When causing an additional discharge secondary battery pack that is not being discharged to start being discharged by connecting the additional discharge secondary battery pack in parallel with a discharging secondary battery pack that is being discharged, in a state in which some of the secondary battery packs are being discharged, the upper controller predicts discharge start timing at which inter-terminal voltages of the additional discharge secondary battery pack and the discharging secondary battery pack correspond to each other. Subsequently, the upper controller causes the additional discharge secondary battery pack to start being discharged at the discharge start timing.
摘要:
Remaining capacity calculation section (110) calculates the remaining capacity for each of cells (300-1) and (300-2) connected in parallel with each other, and control section (130) stops discharge of the first cell from cells (300-1) and (300-2), whose remaining capacity calculated by remaining capacity calculation section (110), has become equal to a threshold value stored in storage section (120) after the start of discharge of cells (300-1) and (300-2).
摘要:
In order to provide a battery module control system able to reuse an arbitrary secondary battery module through a simple, inexpensive system, the present invention includes: a plurality of battery modules that are connected to each other in parallel; switch circuits that are provided on charge and discharge routes of a plurality of the battery modules; an average impedance value calculation section (control section) that calculates average impedance values of a plurality of the battery modules; a maximum allowable charge-and-discharge rate input section (input section) that inputs maximum allowable charge-and-discharge rates of a plurality of the battery modules; an allowable voltage difference calculation section (control section) that calculates allowable voltage differences of a plurality of the battery modules on the basis of the average impedance values calculated by the average impedance value calculation section and the maximum allowable charge-and-discharge rates input by the maximum allowable charge-and-discharge rate input section; a common voltage detection section (control section) that detects a voltage of a common charge and discharge route of a plurality of the battery modules; and a plurality of voltage detection sections (control section) that detect voltages of a plurality of the battery modules, wherein, when a difference between the voltage detected by the common voltage detection section and the voltage detected by the voltage detection section corresponding to a predetermined battery module is greater than an allowable voltage difference of the predetermined battery module, a switch circuit provided on a charge and discharge route of the predetermined battery module is so controlled as to be turned OFF.
摘要:
An electromagnetic flowmeter includes a coil, exciting section, noise eliminating section, and arithmetic processing section. The coil applies a magnetic field to a fluid flowing in a pipe line. The exciting section supplies an exciting current to the coil. The noise eliminating section eliminates noise from a measurement signal detected from the fluid under excitation by using a differential frequency component between a commercial power frequency and an exciting frequency. The arithmetic processing section calculates a measurement flow rate on the basis of the measurement signal output from the noise eliminating section.
摘要:
An apparatus for supplying start fuel for a carburetor in which an internal combustion engine has a fly-wheel with a magneto incorporated therewith. An intake air passage has an electromagnetic valve and this valve is actuated by an output signal of a primary coil of the fly-wheel magneto. In one embodiment, the electromagnetic valve is actuated by an output difference between an output signal of a primary coil produced when a start motor is rotated and an output signal of the primary coil produced when the engine is rotated.
摘要:
In an electricity storage system that has a plurality of secondary battery packs, at the time of switching the object that is to be charged from a first secondary battery pack to a second secondary battery pack that has voltage across terminals lower than that of the first secondary battery pack, by causing a current-limiting circuit of the second secondary battery pack to operate, forms a path for the flow of a charging current for charging secondary batteries that are provided in the second secondary battery pack, and starts charging of the second secondary battery pack while limiting the charging current to a fixed value or less by means of the current-limiting circuit.
摘要:
Remaining capacity calculation section (110) calculates remaining capacities for each of cells (300-1) and (300-2) connected in parallel with each other, and control section (130) stops, after starting discharge of cells (300-1) and (300-2), discharge of one of cells (300-1) and (300-2) whose remaining capacity calculated by remaining capacity calculation section (110) has become equal to a threshold value stored in storage section (120).
摘要:
A secondary battery voltage detecting system includes: a battery group in which lithium ion secondary batteries are connected in series; a charging and discharging switch that is connected between the battery group and an output terminal and performs charging and discharging; abnormality detectors that divide the batteries of the battery group into blocks and that detect battery voltages; a CPU that performs arithmetic processing of respective detection signals of protection elements including the abnormality detectors; first voltage level converters that make voltage references of the detection signals uniform between the protection elements and the CPU; and second voltage level converters connected between the abnormality detectors and the first voltage level converters. The CPU outputs, at a time interval set in advance, a signal for causing the second voltage level converters to operate and electrically isolates or connects paths between the detectors and the first voltage level converters.
摘要:
In a slave electromagnetic flow meter, the synchronization signal from a master electromagnetic flow meter (that is, a master electromagnetic signal) MPs is monitored, and if the master synchronization signal MPs ceases to be received, then the synchronization signal used for the flow rate measurement is switched to a synchronization signal Ps that is generated by the synchronization signal generating unit of the slave electromagnetic flow meter, and the switched synchronization signal Ps is defined as the master synchronization signal MPs′ for the slave electromagnetic flow meter in the next stage.