Why is compressed air required in the lithium‑battery separator extrusion distribution room?

Introduction

In the production of lithium‑ion battery separators, extrusion is one of the core processes, demanding extremely stringent requirements for both the production environment and equipment stability. As the power hub of the entire extrusion line, the electrical distribution room houses a large array of electrical equipment and incorporates a compressed‑air system. This paper provides an in-depth analysis of the critical role that compressed air plays in the electrical distribution room of lithium‑ion battery separator extrusion lines.

I. Actuation of Pneumatic Control and Actuating Mechanisms

In the electrical control system of the distribution room,Some high-voltage switchgear, circuit breakers, and disconnect switches are equipped with pneumatic operating mechanisms.Compressed air powers these pneumatic actuators, ensuring swift and reliable switching operations. Compared with purely electrical or mechanical drives, pneumatic systems offer advantages such as faster response times and superior explosion-proof performance in certain environments, thereby meeting the high reliability requirements of diaphragm production lines for power distribution.

II. Maintaining Positive Pressure and a Clean Environment in the Distribution Room

The lithium‑battery separator extrusion workshop has extremely stringent cleanliness requirements. To prevent unfiltered external air and dust from entering the electrical distribution room, such rooms typically employ…Positive-pressure ventilation designThe compressed air system can serve as a positive-pressure control power source, driving pneumatic control valves or dampers to precisely regulate the pressure differential between indoors and outdoors, thereby maintaining a slightly positive pressure within the switchgear room and ensuring a clean environment.

III. Daily Cleaning and Maintenance of Electrical Equipment

Electrical components inside distribution cabinets are highly sensitive to dust, and dust accumulation can lead to a decline in insulation performance. During routine maintenance, operations and maintenance personnel should use clean, dry compressed air to blow‑clean the interior of the cabinet, busbar trunking, and all electrical connection points. This non‑contact cleaning method effectively removes dust from hard‑to‑reach areas, extends the service life of electrical equipment, and ensures the continuous, stable operation of the extrusion process.

IV. Auxiliary Safety and Fire Protection Systems

Safety protection in distribution rooms is of paramount importance. In certain designs, compressed air is used to operate pneumatic control valves or pressure‑relief devices within the fire‑protection system. In an emergency, compressed air can respond rapidly, helping to open or close relevant pipelines and coordinating with the fire‑extinguishing system to ensure effective operation. Moreover, some pneumatic door locks and emergency egress devices rely on compressed air to maintain proper functionality under extreme conditions such as power outages.

V. Air Supply for Pneumatic Instruments and Measuring Devices

The distribution room is equipped with numerous monitoring instruments to provide real-time surveillance of critical parameters such as voltage, current, and temperature. Certain pneumatic instruments, pressure transmitters, and specialized gas analyzers require clean compressed air as their operating gas supply or calibration medium. A stable compressed-air supply ensures the accuracy of these measurement devices, thereby providing reliable data to support the optimization of extrusion process parameters.