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EV Motor Core Laminations Manufacturer
If you are building the next great electric vehicle or other electric machine, you need the best motor core laminations. Sino makes these high-performance parts. We help you build motors that go farther, use less power, and last longer.
Critical Role of Electrical Steel in EV Performance
The choice of electrical steel grade is absolutely critical for squeezing every last bit of performance and range out of an EV. You see, EV motors, especially the high-performance ev traction motor core units, spin incredibly fast, sometimes well over 10,000 or even 20,000 RPM. This means the magnetic fields are flipping back and forth at very high frequencies. Eddy current losses go up with the square of that frequency and the square of the lamination thickness. This is why thinner is often better.
Here’s a simplified look at how different material properties can impact performance, drawing from the kind of data you’d find from leading steel producers like ArcelorMittal (with their iCARe® series for e-mobility) or POSCO (with their Hyper NO grades):
Electrical Steel Grade (Illustrative Sino Guide) | Typical Thickness (mm) | Core Loss (W/kg at 1.5T, 400Hz)* | Silicon Content (Approx. %) | Sino’s Take: Ideal Scenario |
Standard Grade (e.g., M350-50A equivalent) | 0.50 | ~35-45 | ~1.0-2.5 | Cost-sensitive applications, lower speed/frequency motors where ultimate efficiency isn’t the prime driver. |
Mid-Grade NO Steel (e.g., M270-35A equivalent) | 0.35 | ~25-30 | ~2.5-3.5 | A good balance for many mainstream EV motors; decent efficiency without breaking the bank. |
High-Grade NO Steel (e.g., NO20-1200 equivalent) | 0.20 | ~10-15 | ~3.0-3.5 | High-performance ev traction motor core units, high-frequency operation; where efficiency and power density are key. |
Advanced Thin Gauge / High-Si Steel | 0.10 – 0.15 | <10 | ~3.5-6.5 | Ultimate efficiency needs, Formula E, aerospace, or niche EVs where every watt counts. Can be trickier to process. |
Core loss values are highly dependent on specific grade, frequency, and magnetic flux density. This table is for illustrative comparison. Source: Conceptualized from Sino’s internal expertise, industry best practices, and typical data ranges seen in publications from IEEE Transactions on Magnetics and steel manufacturer datasheets.
Table 1: Steel Grade Physical & Loss Characteristics
| Electrical Steel Grade (Illustrative Sino Guide) | Typical Thickness (mm) | Core Loss (W/kg at 1.5T, 400Hz)* |
|---|---|---|
| Standard Grade (e.g., M350-50A equivalent) | 0.50 | ~35-45 |
| Mid-Grade NO Steel (e.g., M270-35A equivalent) | 0.35 | ~25-30 |
| High-Grade NO Steel (e.g., NO20-1200 equivalent) | 0.20 | ~10-15 |
| Advanced Thin Gauge / High-Si Steel | 0.10 – 0.15 | <10 |
Table 2: Steel Grade Composition & Application Scenario
| Electrical Steel Grade (Illustrative Sino Guide) | Silicon Content (Approx. %) | Sino’s Take: Ideal Scenario |
|---|---|---|
| Standard Grade (e.g., M350-50A equivalent) | ~1.0-2.5 | Cost-sensitive applications, lower speed/frequency motors where ultimate efficiency isn’t the prime driver. |
| Mid-Grade NO Steel (e.g., M270-35A equivalent) | ~2.5-3.5 | A good balance for many mainstream EV motors; decent efficiency without breaking the bank. |
| High-Grade NO Steel (e.g., NO20-1200 equivalent) | ~3.0-3.5 | High-performance ev traction motor core units, high-frequency operation; where efficiency and power density are key. |
| Advanced Thin Gauge / High-Si Steel | ~3.5-6.5 | Ultimate efficiency needs, Formula E, aerospace, or niche EVs where every watt counts. Can be trickier to process. |
Our Products
The Sino Advantage: Your Expert Partner in EV Propulsion
Expert partner like Sino for your EV motor core laminations isn’t just a procurement decision; it’s a strategic one.
We don’t just stamp metal. We understand the physics, the materials science, and the intricate manufacturing nuances that make or break an ev traction motor core.
We see ourselves as an extension of your R&D and production teams. We’re here to consult, advise, and co-engineer solutions that meet your specific performance, cost, and volume targets.
From advanced electrical steels to precision manufacturing processes and robust quality control, we invest in the tools and techniques that deliver superior EV motor core laminations.
Whether you need a handful of prototypes for a new motor concept or high-volume production for an established EV platform, Sino has the scalability and flexibility to deliver.
Our commitment to quality is unwavering, because we know that the reliability and efficiency of your EV motor depend on the perfection of every single lamination.
Sino’s Precision Crafts Performance
1
Cutting Technology
Whether it’s high-speed progressive die stamping for mass production or precision laser cutting for intricate prototypes or specialized ev traction motor core designs, our focus is on achieving burr-free edges and maintaining the integrity of the material.
2
Insulation Integrity
The inter-laminar insulation is crucial. We handle various coating types, from organic to inorganic, ensuring their application and curing (if needed) are flawless. Our handling protocols are designed to prevent any scratches or damage that could compromise this vital barrier.
3
Stacking & Joining
How the laminations are stacked and joined to form the final EV motor core laminations (stator or rotor core) is also key.
Common methods for Stacking & Joining
Interlocking
Small, punched features on the laminations physically lock them together. It’s cost-effective but needs precise design to avoid stress concentrations.
Welding
Can provide a very robust stack, but the heat can damage insulation near the weld and potentially create localized short circuits if not controlled meticulously. At Sino, our automated welding processes are finely tuned to minimize the heat-affected zone.
Bonding/Gluing
Applying an adhesive between laminations offers excellent insulation, can improve mechanical stability, and even help with NVH (Noise, Vibration, Harshness) damping. It’s a more involved process, but for high-performance applications, the benefits can be substantial. Sino has developed specialized bonding techniques for ev traction motor core components that ensure complete coverage and optimal strength.
Why Sino's Laminations Help EV Motors
Our laminations help make electric vehicle traction systems work great. They lead to:
Motor efficiency enhancement
Less wasted energy means the car uses less battery power. This gives the EV a longer range. Our laminations help achieve core loss optimization and iron loss minimization.
More power in a smaller size
This is called torque density improvement. Our laminations help the motor create a strong magnetic field (magnetic flux density) before hitting limits where the magnetism can't get stronger (saturation flux limits). We can check this using lamination BH curve analysis.
Better heat handling
Good thermal conductivity and lamination heat dissipation help keep the motor cool. This is important because motors can get hot, and staying cool helps them last longer and work better. We design for good lamination cooling channels.
Less noise and shaking
Special designs and materials can help with lamination noise reduction and lamination vibration damping, reducing magnetostriction effects (a kind of noise steel makes when it gets magnetized). This makes the car ride smoother and quieter.
Smoother power
Our laminations help reduce torque ripple (power bumps) and harmonic distortion (wasted power shapes).
Where These Parts Are Used
Our EV motor core laminations are used in many places in electric transport:
Traction motors
The main motor that drives the wheels in Battery Electric Vehicles (BEVs) and Hybrid Electric Vehicles (HEVs).
E-axle systems
Where the motor is part of the axle.
Regenerative braking motors
Motors that act like generators when slowing down to put energy back into the battery.
Other motors
In electric motorcycles, buses, trucks, and even things like drone propulsion motors or motors for industrial robotics.
The Road Ahead: Greener, Faster, Further
The EV market is evolving at lightning speed. The demand is for motors that are even more efficient, more power-dense, lighter, and quieter. This translates directly into challenges and opportunities for EV motor core laminations. We’re seeing trends towards even thinner laminations (sub-0.1mm in some research!), novel amorphous or nanocrystalline materials for ultra-low core losses, and more integrated motor designs.
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At Sino, we’re not just watching these trends; we’re actively preparing for them, investing in research and development to ensure we can offer the next generation of EV motor core laminations that will power the vehicles of tomorrow. Your journey towards a more efficient, high-performing ev traction motor core starts with the right laminations, and that journey can start with Sino.
Reach out to the Sino team today!
If you’re looking to push the boundaries of EV motor performance, let’s talk. We’re confident that our expertise in EV motor core laminations can help you achieve your goals and drive the future of electric mobility. Let’s build something exceptional together.
- [email protected]
- +86 17727849205
- North and South Avenue, Du Ruan Town, Pengjiang District, Jiangmen, China
Note: To speed up your project, you can label Lamination Stacks with details such as tolerance, material, surface finish, whether or not oxidized insulation is required, quantity, and more.
