موردو الجملة لمكونات بطاريات السيارات الكهربائية

EV battery components: product categories and supply landscape

The EV battery supply chain comprises several distinct component categories that buyers source independently or as assembled systems: lithium battery cells (the fundamental electrochemical energy storage units — available in cylindrical (18650, 21700, 4680 formats), prismatic aluminium-cased, and pouch configurations; cell chemistry variants include NMC (nickel manganese cobalt), LFP (lithium iron phosphate — dominant in China and increasingly in global entry-level EVs), and NCA (nickel cobalt aluminium)); battery modules (pre-assembled groupings of cells with inter-cell connections, thermal management interfaces, and structural housing — available from Chinese manufacturers as standardised modules for EV conversion and assembly applications); battery management systems (BMS) (electronic control units managing cell balancing, state-of-charge estimation, temperature monitoring, and protection circuitry — a critical safety component; Chinese BMS manufacturers such as Daly, JKBMS, and ANT BMS supply global aftermarket and OEM applications); DC-DC converters (high-voltage to low-voltage converters supplying 12V/24V accessories from the high-voltage traction battery — a key EV powertrain component); EV charging equipment (on-board chargers (OBC), charging cables, EVSE (electric vehicle supply equipment) for home and commercial charging, and DC fast-charge station components); battery thermal management components (cooling plates, heat exchangers, thermal interface materials, and battery heater pads); and high-voltage wiring harnesses and connectors (HV orange cable assemblies and high-voltage connectors for EV powertrain wiring). China's dominance in EV battery supply is structural — CATL holds approximately 35% of global EV battery cell capacity; BYD has vertically integrated from cells to vehicles; and China's battery ecosystem includes the world's most comprehensive supply of cathode materials (LFP, NMC), anode materials (graphite), electrolyte, and separator materials.