Products Description

This is an EV Relay Yoke plate specifically designed for electric vehicle battery management systems and high-performance motor controllers. Its core technology lies in its copper plating, with the plating thickness strictly controlled between 3-5μm. In the working principle of a relay, the yoke is the key channel for magnetic flux. This product, through high-precision stamping and a uniform copper plating process, achieves a more even distribution of magnetic flux and significantly reduces resistance, thereby improving the stability and reliability of the relay under high-voltage, high-current environments.
Technical Features
Extremely Low Magnetic Resistivity
Uniform copper plating with a thickness of 3-5μm significantly reduces the magnetic resistivity of the Yoke Metal Parts of EV Relays, resulting in higher magnetic flux density and stronger attraction under the same current.
High Reliability Design
The combination of high-permeability materials and the copper plating for Yoke for Electromagnetic EV Relay allows the relay to maintain stable electromagnetic performance in high-voltage, high-current environments.
Long Lifespan Guarantee
The wear resistance and corrosion resistance of the copper plating ensure a long service life for the Yoke Metal skeleton for EV Relay in harsh environments.

Manufacturing Process
High Permeability, Low Loss Electrically Pure Iron Substrate
Utilizing high-grade electrically pure iron for EV Relay Yoke pure iron plate (such as DT4E), the coercivity can be controlled at ≤24 A/m, exhibiting excellent magnetization and demagnetization response capabilities. High permeability allows for the establishment of stable magnetic flux at lower coil drive power, helping to reduce system energy consumption and heat generation.
Optimized Hysteresis and Eddy Current Loss Control
Through grain structure optimization and fine annealing processes, hysteresis losses are reduced, improving response efficiency under high-speed pull-in and release operations. Copper plating for Yoke Metal skeleton for EV Relay further suppresses eddy current effects, reducing the risk of temperature rise from frequent operations.
High Saturation Magnetic Induction Margin
The material's saturation magnetic induction intensity of EV Relay Yoke pure iron plate Bs can reach ≥1.8 T, providing ample magnetic flux carrying capacity. It maintains stable attraction force even under voltage fluctuations or low-temperature conditions, preventing accidental release caused by vibration.

Quality Control and Certification
Material Inspection
Chemical composition analysis of iron is performed using a spectrometer to ensure compliance with GB/T 17654 standard for Yoke Metal Parts of EV Relays.
Dimensional and Geometric Tolerances
Stamping dimensions are inspected using a coordinate measuring machine to ensure each critical dimension is within tolerance range.
Coating Inspection
Copper plating thickness for the Yoke Metal skeleton for EV Relay is measured using X-ray fluorescence (XRF) to ensure the accuracy of the 3-5μm target value.
Certification System
Strict adherence to the ISO 9001 quality management system ensures rigorous quality traceability for every Yoke for Electromagnetic EV Relay.

contact us
If you are developing a relay system for new energy vehicles, please submit your drawings and technical parameters. We will provide you with stable and reliable manufacturing support for EV Relay Yoke Plates.
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