| 摘要 |
<p>The various embodiments of the present invention provide a method and system for extending battery power at cell sites. The method for extending battery power at cell sites comprises providing a combination of a valve-regulated lead-acid battery (VRLA) and a Li-ION battery, mixing cell chemistry of the VRLA battery and the Li-ION battery and charging the VRLA-Li-ION battery combination with a single charger circuit. The method further comprises providing a rectifier for the cell chemistries of both the VRLA battery and the Li-ION battery and activating each of the battery based on the power available. The Li-ION battery is the primary battery and the VRLA battery is the secondary battery. The charging current through the VRLA battery is regulated by varying a pulse width of a high current switch based on the current read through the current sensor attached to a VRLA current path. 10 Claims, 4 Drawing Sheets</p> |
