摘要:
This invention provides a method of controlling condition of an assembled battery mounted in a self-generation electric vehicle. The method is comprised of the following steps: detecting battery voltage and battery current repeatedly; estimating a constant-power voltage on the basis of the battery voltage and the battery current; setting a target voltage; comparing the constant-power-discharge voltage with the target voltage to provide a difference therebetween; and charging or discharging the battery to reduce the difference when the battery is not operated. The constant-power voltage is set as a function of a remaining capacity of the battery when a preset constant power is charged to or discharged from the battery.
摘要:
A method and device for determining whether a battery for a hybrid vehicle is fully charged includes: detecting the battery current, providing a unit of stored battery energy, detecting Joule heat loss and battery temperature, calculating changes in the battery Joule heat loss and battery temperature while the battery is charged by the unit of stored energy and a ratio between the Joule heat loss and temperature changes, and comparing the ratio of the Joule heat loss and temperature changes with a predetermined level.
摘要:
The present disclosure provides a nonaqueous electrolyte solution that is used in a nonaqueous electrolyte secondary battery. The nonaqueous electrolyte solution contains a fluorinated solvent, a predetermined additive A and a predetermined additive B. A ratio (CA/CB) of concentration CA (mol/L) of the additive A and concentration CB (mol/L) of the additive B lies in a range of 1 to 30.
摘要:
A plurality of individual fuel cells are connected in series with each other to construct the fuel cell. The fuel cell is diagnosed on the basis of an average output voltage Va of the individual cells, their standard deviation σ, individual output voltages, their variances σ2 of vibration components and their voltage drop speed of their non-vibration components. For example, if Va is within a normal range and moreover at least one of the individual output voltages is not within a normal range, it is diagnosed that water blocks the fuel electrode. If Va is not within a normal range and moreover σ is within a normal range, it is diagnosed that the electrolyte film is dried. Further, if Va is not within a normal range and moreover σ is not within a normal range, it is diagnosed that the fuel (hydrogen) supply is insufficient.
摘要:
A reduction in the discharge voltage, caused due to a memory effect of a battery, is checked during a discharge operation. An initial discharge characteristic curve, representing an initial relationship between the discharge voltage and the discharge amount of the battery, is parallel shifted so as to coincide with the actual discharge condition, thereby obtaining an estimated discharge characteristic curve in a non-discharged region.
摘要:
A charging apparatus for a rechargeable storage battery is disclosed which charges the battery at a constant current. The charging apparatus monitors a variation in voltage of the battery during charge and finds a minimum value thereof to estimate the amount of capacity of the battery consumed before charge for determining the charge time required for charging the battery fully based on the estimate of the amount of capacity and the temperature of the battery.
摘要:
A map charging index representing discharge characteristics of a battery is obtained based on a battery voltage under a predetermined discharging operation. The map charging index indicates 100 at a first battery voltage obtainable immediately after the battery starts the discharging operation from a fully charged condition and also indicates 0 at a second battery voltage obtainable when the battery substantially ceases the discharging operation. An accumulative charging index is calculated by subtracting a charged capacity from a temporary full-charge capacity of the battery. The temporary full-charge capacity is corrected based on a difference between the map charging index and the accumulative charging index, thereby obtaining a corrected full-charge capacity. And, a dischargeable capacity of the battery is calculated by subtracting the discharged capacity from the corrected full-charge capacity.
摘要:
A die assembly for squeeze casting of metals wherein a tubular reinforcing die is set on a base, a forming die consists of split dies is inserted in internal contact with the reinforcing die and the surface in internal contact with the reinforcing die is tapered so as to be narrower downward so that, in case a downward force is applied by a sealing die to a molten metal poured into the forming die, the split dies may be pushed in downward along the tapered surface to prevent the molten metal from spitting out.
摘要:
An evaporator placed in a vehicle compartment includes a meandering flattened pipe, a header joined with one end of the flattened pipe for introducing a compressed refrigerant from a compressor placed in an engine room, and a header joined with the other end of the flattened pipe for discharging the refrigerant toward the compressor, wherein both headers are located in the engine room.
摘要:
An eye refractive power measurement apparatus capable of checking a presenting position (presenting distance) of a fixation target. The eye refractive power measurement apparatus has a measurement optical system for measuring eye refractive power of an examinee's eye, a fixation target presentation optical system for presenting a fixation target to the examinee's eye, a changing unit which changes a presenting position of the fixation target in a direction of an optical axis of the presentation optical system, a display, and a controller which controls to display a change of the presenting position as a diopter change on the display graphically.