真空注液单元：真空注液嘴配置在密封的真空注液单元内，配合计量泵，组合成真空注液单元。除了阀的开启动作，没有外置机械动作。适合圆柱电池真空注液, 如18650电池。

Vacuum Filling Unit: A close vacuum filling unit is consist of vacuum shut off nozzle, lift valve and metering pump. It is suitable for filling electrolyte Cylindrical Li-Ion Battery, like 18650 cells.