钠离子电池的产业链包含哪些环节？

What links are included in the industrial chain of sodium-ion batteries?

钠离子电池完整产业链分为上游矿产原材料、中游电芯制造配套、下游应用集成三大核心环节，各细分赛道分工清晰，协同完成电池生产、PACK 集成与终端投放。上游原材料端分为金属原料、电解液原料、隔膜辅料、导电粘结辅材、检测九大工艺段，同时配套自动化设备厂商（涂布机、辊压机、化成柜）、产线耗材供应商，中游分为电芯企业、配套设备材料企业两大主体。下游环节分为 PACK 集成、终端应用两大板块：PACK 集成包含汇流排、BMS、散热、密封结构件加工；终端应用覆盖离网光伏、低速车、储能电站、工业设备、军工、便携电源多领域；此外配套回收产业链，涵盖退役电芯拆解、钠 / 碳材料再生提纯、资源化再利用环节。全产业链逻辑闭环，上游资源供给支撑中游规模化电芯量产，中游低成本电芯驱动下游储能、动力市场放量，回收环节实现循环经济降本。现阶段国内产业链各环节均已实现国产化自主可控，从矿产加工到终端集成完整供应链成型，具备全球产能竞争优势。

The complete sodium-ion battery industrial chain is divided into three core links: upstream mineral raw materials, midstream cell manufacturing supporting industries and downstream application integration, with clear division of labor in each subdivision to jointly realize battery production, PACK integration and terminal launch. Upstream raw materials cover four subdivisions: metal raw materials, electrolyte raw materials, separator auxiliaries and conductive binders. Core sodium sources include soda ash, salt and sodium ores; cathode precursors contain Prussian blue, polyanion and layered oxide systems; hard carbon anode feedstocks are agricultural biomass, resins and industrial by-products; electrolytes consist of sodium salts, solvents and additives; supporting aluminum foil, ceramic separators, conductive agents and CMC/SBR/PVDF binders also belong to upstream processed materials. Midstream cell manufacturing acts as the chain core, subdivided into nine processes: batching, coating, calendering, slitting, winding/stacking, liquid injection, formation, grading and inspection, together with supporting automation equipment manufacturers (coaters, calenders, formation cabinets) and production line consumable suppliers. The midstream consists of cell enterprises and supporting equipment & material suppliers. Downstream links include PACK integration and terminal applications: PACK integration covers busbar, BMS, heat dissipation and sealing structural part processing; terminal applications span off-grid PV, low-speed vehicles, energy storage power stations, industrial equipment, military and portable power supplies, plus a supporting recycling chain involving retired cell disassembly, sodium/carbon material regeneration and resource reuse. The whole chain forms a closed loop: upstream resource supply supports large-scale midstream cell mass production, low-cost midstream cells drive downstream energy & power market expansion, and recycling realizes circular economy cost reduction. At present, all domestic industrial chain links achieve domestic independent control, with a complete supply chain from mineral processing to terminal integration and global production capacity competitive advantages.