And the charging current is programmable,the output current isn′t than4A,the efficiency is96%,the range of output votlage is3Vto28V.The chip can be used to the multichemistry battery charger conˉtroller.
In this paper, the charging-current efficiency for Ti0.5Zr0.5V0.5Ni1.5-xCrx (x=0.2,0.4,0.6 and 0.8) hydrogen storage alloys was systematically investigated. The influence of the temperature and charging rate on the charging current efficiency and the change rule of the current efficiency with the cycle number were studied.
Simulation results show that by use of APFC technology the harmonics and reactive current in charging current of DVR can be actively eliminated and both voltage stability and dynamic response of DC energy storage unit can be improved.
Based on the result of NiMH battery performance experiments,changing trend of maximal temperature and difference in temperature of HEV NiMH battery in different SOC and different charging current is analyzed.
A constant current high voltage power supply for charging the capacitor with variable switch frequency is described. Full-bridge series resonant topology and intelligent power modules(IPM) are used,and the switch frequency is controlled by the feedback signal of the resonant current to keep the charging current constant.
The results showed that the best press to manufacture adulterated electrode was (6?MPa) and the content of Co(OH)_2 and LiOH was 10%,nickel powder was 5% and acetylene black 5% when the charging current was 380?
When the charging current,the discharging current and the end potential are respectively 100 mA/g ,50 mA/g and 1.0 V,the specific capacity is 346.1 mA·h/g and the discharge potential plateau is at 1.24 V.
In this method, the charging current is maintained at 100A for 7h at first and the corresponding voltage is rised from 2.0V to 2.32V per cell, then the charging voltage is raised in steps and maintained at 2.32V for 10h, 2.50V for 10h, and 2.62V for 21h, the total charge duration is 48h.
After a bake-out at 120° C under dry air and subsequent equilibration in a dry ambient at the test temperature, a voltage step is applied to the sample and the current versus time is recorded for 16,000 sec (the charging current).
The formation of blisters was observed more on the input side surface than on the exit-side surface and occurred for polarization charging current densities greater than 30.0 A/m2.
With the same charging current and time, longer dynamic charging resulted in more severe embrittlement.
The degree of hydrogen embrittlement increased as the charging current increased or as the strain rate decreased.
Optimal charging current density is found to be at 2200 A/m2, and charging time is varied.