1, when the AC input is normal

When the system AC input is normal, the two AC inputs are selected by the AC switching control circuit, and the power is supplied to each charging module through the AC power distribution unit. The charging module converts the three-phase AC power into 220V or 110V DC, and is isolated and output by a built-in isolation diode inside the charging module. On one hand, the battery is charged and the load is supplied with normal operating current.

The monitoring part adopts the collection and distribution method to monitor and control the system. The operating parameters of the charging cabinet and the feed cabinet and the operating parameters of the charging module are collected and processed by the data acquisition module, and then the processed information is reported to the monitoring module through the serial communication port. The monitoring module is displayed on the LCD screen after being processed uniformly. At the same time, the system can be set and controlled through human-computer interaction, and remote monitoring can be accessed if necessary. The monitoring module can also perform charge/float control and current limiting control on the charging module to ensure normal battery charging and prolong battery life.

2. AC input power failure or abnormality

The normal float charge operation, AC input power failure or abnormal, the charging module stops working, this is the battery through the silicon chain system uninterrupted power supply to the load, the monitoring module monitors the battery voltage, discharge time, when the battery discharges to set the undervoltage point When the monitoring module alarms. After the AC input returns to normal, the charging module charges the battery.