发明名称 |
EFFICIENT SUPERCAPACITOR CHARGING TECHNIQUE BY A HYSTERETIC CHARGING SCHEME |
摘要 |
An efficient supercapacitor charging scheme with low ambient energy sources is provided. In one embodiment, a charging apparatus is disclosed. The apparatus includes a burst control module, and a boost converter configured to control a two-stage supercapacitor composition. The boost converter may be a pulse-frequency modulation (PFM) dc-dc boost converter and the apparatus may include a charge-strapping supercapacitor to control efficiency and the amount of burst charging time. Another embodiment is directed to a hysteretic charging scheme including controlling hysteresis, optimizing window size, and controlling a two-stage supercapacitor composition with a pulse-frequency modulation (PFM) dc-dc boost converter. The charging scheme is useful to extend the upper bound on the capacitance of supercapacitors. |
申请公布号 |
US2017117730(A1) |
申请公布日期 |
2017.04.27 |
申请号 |
US201615192430 |
申请日期 |
2016.06.24 |
申请人 |
The Regents of the University of California |
发明人 |
KIM Sehwan;CHOU Pai H. |
分类号 |
H02J7/00 |
主分类号 |
H02J7/00 |
代理机构 |
|
代理人 |
|
主权项 |
1. A supercapacitor charger comprising:
a charge-strapping supercapacitor configured to accumulate energy from a low-power source; a burst control module configured to release energy accumulated by the charge-strapping supercapacitor, wherein a burst transfer window for releasing energy by the burst control module is controlled by the charge-strapping capacitor; and a boost converter configured to charge a reservoir supercapacitor, wherein the boost converter is enabled and disabled by the burst control module based on the burst transfer window. |
地址 |
Oakland CA US |