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EV Supply Chain Hub


The EV supply chain runs from critical minerals through refining, engineered materials and component manufacturing to vehicle assembly at gigafactory scale. It draws on mining, chemistry, metallurgy, semiconductor fabrication, software and precision manufacturing.

ElectronsX divides it into nine nodes, listed below from upstream to downstream. Each node page covers upstream dependencies, key manufacturers, technology transitions and links to the BESS, robot and grid supply chains.


Nine Supply Chain Nodes

Node Key Chokepoints
Upstream Materials DRC cobalt, Chilean lithium, Chinese REE refining, Chinese graphite anode
Battery Supply Chain LFP/NMC cell capacity (CATL/BYD dominance), separator supply, dry electrode transition
Motor & Drivetrain NdFeB magnet supply (China ~90%), GOES electrical steel, winding labor
Power Electronics SiC wafer supply (Wolfspeed, Coherent, Chinese OEMs), GaN epi capacity
Thermal System TIM material supply, heat pump refrigerant, thermal pad manufacturers
Network & Communications Automotive Ethernet switch supply, gateway MCU allocation, V2X chipset availability
SDV Systems ADAS SoC supply (NVIDIA, Mobileye, Qualcomm), camera and radar allocations
Final Assembly Wiring harness labor (Morocco, Ukraine, Mexico concentration), assembly automation maturity
EV Vehicle Stack Platform integration complexity, zonal E/E transition, software stack maturity

Node Scope

  • Upstream Materials: Critical minerals from mine to refined chemical - lithium, cobalt, nickel, graphite, REE, silicon carbide, copper.
  • Battery Supply Chain: Cell chemistries, cathode and anode materials, cell manufacturing, pack integration, BMS, gigafactory profiles.
  • Motor & Drivetrain: Traction motors, permanent magnets, GOES laminations, gearboxes, e-axle integration.
  • Power Electronics: Traction inverters, OBC, DC-DC converters - SiC/GaN transition, key suppliers, ASIL requirements, cross-domain demand.
  • Thermal System: BTMS, heat pumps, TIM materials, cooling pumps, heat exchangers - for batteries, power electronics, cabin, and compute.
  • Network & Communications: CAN bus, automotive Ethernet, LIN, FlexRay, gateways, TCU, V2X hardware, OTA infrastructure.
  • SDV Systems: ADAS compute platforms, sensor suite, vehicle OS, OTA update infrastructure, and the zonal E/E architecture enabling software-defined features.
  • Final Assembly: Gigafactory assembly processes, unboxed manufacturing, automation, wiring harness integration, quality systems, and factory electrification.
  • EV Vehicle Stack: System-level view of how all nine nodes integrate into a complete EV platform - architecture, voltage systems, software-defined layers.

The Nodes from Upstream to Downstream

1. Upstream Materials

Lithium, nickel, cobalt, manganese, graphite, copper and rare earth elements (REE) set the physical and geopolitical limits on what can be built and at what cost. For most of them, refining capacity is the bottleneck, not raw resource availability. China controls most global refining of lithium chemicals, cobalt sulfate, graphite anode and rare earth separation.

See: Critical Materials Overview | Critical Elements Directory | Raw Materials & Mining | Refined Materials | Battery Upstream Materials

2. Battery Supply Chain

Cathode active materials (CAM), anode active materials (AAM), separators and electrolytes become cells and then packs with a battery management system (BMS). Tier-1 and Tier-2 suppliers are concentrated in Asia, with reshoring in the US and EU driven by Inflation Reduction Act (IRA) and EU Net-Zero Industry Act incentives.

See: Battery Supply Chain | Cell Manufacturing Process | Pack Manufacturing Process | Battery Manufacturing Process Flow

3. Motor & Drivetrain

Traction motors, NdFeB permanent magnets, GOES laminations, gearboxes and e-axle integration. China dominates rare earth separation and makes about 90% of global NdFeB magnets.

See: Motor & Drivetrain

4. Power Electronics

Traction inverters, onboard chargers (OBC) and DC-DC converters are moving from IGBT to silicon carbide (SiC), a shift running through 2024-2028. SiC traction inverters deliver a 5-10% range improvement and enable 800V fast-charging architectures in premium and mainstream EVs.

See: Power Electronics | SiC & GaN - The Universal Power Substrate

5. Thermal System

Battery thermal management systems (BTMS), heat pumps, thermal interface materials (TIM), pumps and heat exchangers cool the battery, power electronics, cabin and compute.

See: Thermal System

6. Network & Communications

CAN bus, automotive Ethernet, LIN, FlexRay, gateways, the telematics control unit (TCU), V2X hardware and over-the-air (OTA) update infrastructure.

See: Network & Communications

7. SDV Systems

ADAS compute, sensors, the vehicle OS and zonal E/E architecture make up the software-defined vehicle (SDV). The move to zonal architecture is also changing how final assembly is organized.

See: SDV Systems

8. Final Assembly

Batteries, motors, power electronics, thermal systems, wiring and control electronics come together as a complete vehicle. A large gigafactory uses 50-150+ MW in operation, needs 24-36 months of transformer procurement lead time before energization, and creates its own demand for everything from dry room equipment to MES software.

See: EV Final Assembly | Gigafactories & Battery Plants

9. EV Vehicle Stack

The system-level view of how the other eight nodes integrate into one platform: architecture, voltage systems and software layers.

See: EV Vehicle Stack


Cross-Domain Convergence

At three nodes the EV supply chain competes with other electrification supply chains for the same resources:

  • SiC power semiconductors: shared with BESS power conversion, EVSE DC fast charging, solar inverters and grid infrastructure. The traction inverter is one of five demand curves drawing on the same wafer supply.
  • NdFeB permanent magnets: shared with wind turbine generators, industrial motors and humanoid robot actuators. Chinese control of REE separation and about 90% of global NdFeB production is the largest geopolitical risk in the EV motor supply chain.
  • GOES electrical steel: grain-oriented electrical steel (GOES) is shared by EV motor laminations, gigafactory transformer cores and grid transformers. US domestic production cannot serve EV, gigafactory and grid buildout demand at the same time.

See: Supply Chain Convergence Map - Full View | Sector Overlay Supply Chains


Gigafactories & Manufacturing Footprint

The ElectronsX gigafactory database covers capacity, chemistry, status, IRA eligibility and OEM profiles by region.


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