直流屏充电模块的主要功能是实现AC/DC变换，还有系统控制、告警等功能。 自动/手动控制：直流屏充电模块具有自动/手动控制功能，在自动工作方式下，充电模块接收来自监控模块的指令。通常情况下，所有合闸模块应工作于自动状态下，以实现监控模块对电池的智能管理。手动状态下，有模块面板上的电位器来调节模块的输出电压。 电压调节：直流屏充电模块接受监控模块的指令，调节输出电压到设定值。电压调整范围可以在输出电压下限（一般为198V/99V）和上限（一般为286V/143V）之间。 限流：指将充电模块的大输出电流限制在一定的范围内，以控制电池充电电流，防止电池过流充电。
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