In recent years, with the rapid development of the new energy electric vehicle industry, lithium batteries, as the core power source, have seen continuously increasing production demand, which in turn has driven the large-scale expansion of battery manufacturing enterprises and significantly heightened the demand for high-standard lithium battery cleanroom construction.
An in-depth analysis of the key technical points in the construction of new energy lithium battery cleanrooms:
01 Division of Clean Areas in Lithium Battery CleanroomsCleanrooms are usually divided into different grade areas according to cleanliness requirements to achieve precise control over airborne particles, microorganisms, and other contaminants.Clean Area: This area has the strictest requirements for air quality, particle concentration, and microbial count. High-efficiency air filters (HEPA or ULPA) must be used, positive pressure (or negative pressure under specific process requirements) must be maintained, and personnel are required to wear protective clothing such as cleanroom suits.Semi-Clean Area: The cleanliness standard is slightly lower than that of the clean area but still requires effective control of airborne particles and microorganisms. Generally, high-efficiency air filtration systems are installed and personnel are required to wear cleanroom suits.Partially Clean Area: The control over particle counts is relatively relaxed but still needs to remain within the acceptable range for the process. Standard air filters with basic cleanroom attire are usually sufficient.Non-Clean Area: The cleanliness requirements are the lowest, with no special air filtration equipment or professional cleanroom clothing needed. This area is mainly used for auxiliary or non-critical work areas.
02. Lithium Battery Cleanroom Air Conditioning Treatment SystemTo ensure the stability and cleanliness of the production environment, the cleanroom must be equipped with a comprehensive air treatment system, including air purification devices, supply and return air equipment, and temperature and humidity control systems. Among them, air purification equipment generally uses High-Efficiency (HEPA) or Ultra-Low Penetration Air (ULPA) filters, which can efficiently remove airborne particles, microorganisms, and harmful gases; the fans and air conditioning systems work in coordination to ensure that the temperature, humidity, and airflow organization in the cleanroom always remain at the optimal state required by the process.
03 Interior Installation of Lithium Battery CleanroomsThe interior finishing materials of cleanrooms need to balance functionality with cleanliness maintenance requirements, focusing on ease of cleaning, anti-static performance, and corrosion resistance.Flooring Materials: Common choices include conductive floors, anti-static epoxy floors, or high-durability anti-static PVC floors, which can effectively dissipate static electricity and facilitate routine cleaning.Wall Materials: It is recommended to use stainless steel panels, acid- and alkali-resistant coatings, or other corrosion-resistant, smooth, seamless finishing materials to minimize dust accumulation in corners.Special Function Areas: High-temperature rooms are usually independently isolated, with enclosures made of rock wool sandwich panels and doors equipped with fireproof doors. Low-humidity areas use rock wool partition walls and glass magnesium rock wool ceilings, paired with sealed molded doors and double-layer vacuum glass windows to enhance sealing and thermal insulation performance.
04 Lithium Battery Cleanroom Lighting System
Lighting design should take into account functionality, cleanliness, and energy efficiency:The workshop should provide a uniform and bright lighting environment to avoid shadows that may interfere with precision operations;Lighting fixtures must be designed to be dust-free, with smooth surfaces and no seams, to prevent dust adhesion and accumulation;High-energy-efficiency LED fixtures should be preferred, significantly reducing energy consumption and operation and maintenance costs while ensuring adequate illumination.
05 Personnel Movement and Protective Measures in Lithium Battery CleanroomsPersonnel are one of the main sources of contamination in cleanrooms; therefore, it is essential to scientifically plan pedestrian flow channels and implement strict access management and behavioral standards:Establish reasonable changing rooms, air showers, and buffer zones to achieve effective separation of personnel flow and material flow;All personnel entering the clean area must receive professional training to master cleanroom behavioral guidelines, protective equipment wearing standards, and emergency response procedures;Through institutionalized management and regular assessments, continuously enhance employees' awareness of cleanliness and operational proficiency, ensuring the cleanliness and stability of the production environment from the source.
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