Powering Automotive & EV with Precision Magnets
Powering Automotive & EV with Precision Magnets
Advanced Magnets for Next-Gen Vehicles
TOPMAG engineers precision NdFeB permanent magnets for critical automotive applications from traditional fuel systems to electric (EV/BEV/PHEV) and hybrid platforms. Our solutions power core components including traction motors, sensors, power electronics, and advanced driver-assistance systems (ADAS).
All magnets are produced in IATF 16949 and ISO 9001 certified facilities, ensuring exceptional thermal stability, corrosion resistance, and anti-demagnetization performance. We enable lighter, more efficient, and durable designs that meet global automotive standards while accelerating the transition to electrified mobility.
Automotive & EV Magnet Applications by System
We provide tailored magnet solutions for 8+ core automotive systems, with precise grade recommendations based on working temperature, load, and environmental requirements.
The application of magnets in the core systems of traditional fuel vehicles:
| Automotive System | Key Components | Recommended Magnet Grade | Core Performance Requirements | Operating Temp Range |
|---|---|---|---|---|
| Engine Management | Fuel Pump Motor, Ignition Coil | N38M / N42H | High stability, corrosion resistance, medium coercivity | -40°C ~ 120°C |
| Safety & Control | ABS Anti-lock Brake Sensor, EPS Electric Power Steering Motor | N40H / N38SH | High precision, anti-interference, stable magnetic flux | -30°C ~ 130°C |
| Body Electronics | Window Regulator Motor, Seat Adjustment Motor, Door Lock Actuator | N35M / N38M | Compact size, low energy loss, long service life | -20°C ~ 100°C |
| Climate Control | Air Conditioning Compressor Motor, Blower Motor | N35H / N40H | High efficiency, resistance to humidity and vibration | -10°C ~ 120°C |
Exclusive system magnet application for new energy vehicles (EV/BEV/PHEV)：
| EV-Specific System | Key Components | Recommended Magnet Grade | Core Performance Requirements | Operating Temp Range |
|---|---|---|---|---|
| Traction Drive System | EV Traction Motor (Stator & Rotor) | N45SH / N50UH / N42EH | Ultra-high coercivity, high magnetic energy product, anti-demagnetization, long cycle life | -40°C ~ 180°C |
| Battery Management System | BMS Sensors, Battery Pack Fixing Magnets, Thermal Management Sensors | N38SH / N40UH / N35EH | High precision, corrosion resistance, salt spray test ≥48h, stable magnetic flux | -20°C ~ 150°C |
| EV Charging System | On-Board Charger (OBC) Parts, Charging Pile Connectors, DC-DC Converter Magnets | N35SH / N38H / N40M | Stable performance under high voltage, low magnetic leakage, anti-interference | -10°C ~ 130°C |
| Regenerative Braking System | Brake Energy Recovery Motor, Hydraulic Brake Assist Magnets | N42SH / N45UH / N40EH | High torque, fast response, anti-fatigue, consistent magnetic performance | -30°C ~ 160°C |
Top-Rated Automotive Magnet Components
Motor Magnets
Sensor Magnets
Speaker Magnets
Water Pump Rotors
Automotive-Grade Magnet Types & Key Features
NdFeB magnets are the preferred choice for high-performance automotive applications due to their superior magnetic energy density. We also provide Ferrite and AlNiCo magnets for specific low-cost or extreme-temperature scenarios.
| Magnet Type | Key Advantages | Typical Automotive Applications |
|---|---|---|
| NdFeB (Neodymium) | Highest magnetic energy density, compact size, high coercivity, customizable high temperature resistance | EV traction motors, EPS motors, high-precision sensors, automotive electronics core parts |
| Ferrite | Low cost, good corrosion resistance, stable performance at medium temperature, no rare earth material | Low-power motors, window regulators, door locks, car audio speaker magnets |
| AlNiCo | Excellent high-temperature stability up to 500°C, good machinability, high residual magnetism | Extreme-temperature sensors, engine ignition systems, high-heat automotive components |
- High Magnetic Energy Density - (BH)max up to 52 MGOe (410 kJ/m³), enabling miniaturization of automotive components
- Customizable High-Temperature Resistance - Grades for 80°C-220°C (N/M/H/SH/UH/EH/AH series), meeting different system requirements
- Superior Anti-Demagnetization - HcJ up to 3259 kA/m, maintaining ≥ 95% magnetic performance after 10,000 cycles
- Strict Quality Control - IATF 16949 & ISO 9001 certified, 100% performance testing before delivery (magnetic flux density, corrosion resistance, shock resistance)
- Corrosion Resistance - Surface treatments: Ni-Cu-Ni, Zn, Au, epoxy coating (salt spray test ≥ 48h, some grades up to 1000h)
Custom Automotive Magnet Solutions
We support full-cycle customization from design to mass production, adapting to your specific component requirements.
Customization scope
Production and delivery capabilities
Monthly Production Capacity: 500,000+ pieces of automotive magnets
Sample Delivery: 3-5 working days (custom samples available)
Mass Production Lead Time: 15-25 working days (depending on quantity)
MOQ: 100 pieces (small batch trial orders supported)
Quality Certification and Testing
