| 摘要 |
<p>An emergency lamp circuit, comprising an LED lamp board module (5), a regulation and management module (2), a control module (4), a cell protection module (3) and a power module (1); the control module (4) controls the operations of emergency power supply, time delay, standby and timing in case of a power failure; the regulation and management module (2) is used to supply stable and controlled voltage for the control module (4) when an external AC supplies power normally; the cell protection module (3) protects an externally connected cell against over-charging, over-discharging and excessive current; and the power module (1) is used to convert the external AC into DC required for the emergency lamp circuit. Also disclosed is an emergency lighting system, comprising an emergency lamp circuit, a cell and a setup panel. The emergency lamp circuit has a long-time standby function, can promptly respond to power failure and at the same time protect the cell, thus extending the service life of the cell.</p> |
