EV Relay Armature Plate
Products Description
This EV Relay armature plate board is a core magnetic component of the relay's magnetic circuit system, primarily used as the armature and yoke. Custom designs for housings and magnetic shielding structures in new energy high-voltage DC contactors are also available. In electric vehicle high-voltage systems, the armature board must withstand frequent switching, strong electromagnetic fields, high temperature and humidity, and vibration and shock. Through material selection, structural optimization, and precision manufacturing, we provide customers with stable and reliable magnetic conduction solutions, directly impacting the relay's pull-in time, release time, holding force, and electrical life.
Unlike ordinary carbon steel or silicon steel stamped parts, we focus on the deep application of pure iron materials in high-voltage scenarios in new energy vehicles, helping customers achieve lower energy consumption, faster response, and higher safety margins.
Manufacturing Process: Precision Manufacturing Drives Magnetic Stability
High-Speed Precision Stamping
Utilizing multi-station continuous progressive dies, we ensure that the Armature for Electromagnetic EV Relay maintains dimensional tolerances at the 0.01mm level even under high-speed production, meeting the stringent consistency requirements of automated assembly lines.
Zero-Stress Annealing Technology
The mechanical stress generated during stamping can disrupt the ferrite lattice, leading to a decrease in magnetic properties. We use a vacuum hydrogen-protected annealing furnace, employing precise temperature control profiles to eliminate internal stress, allowing the grains to rearrange and restoring the permeability to the material's limits.
Surface Treatment and Anti-Oxidation
To address the complexities of the EV environment, we offer electroless nickel plating, zinc-nickel alloy plating, or environmentally friendly passivation treatments. These not only meet 240-480 hour salt spray tests but also ensure that the coating does not affect the gap control between magnetic circuits.
Design Advantages: Comprehensive Control from Macroscopic Geometry to Microscopic Stress
| Topology Optimization and Vibration Reduction | The Armature Metal Parts of EV Relays (armature) bending area adopts a gradual R-angle transition design, avoiding stress concentration and lattice tearing caused by traditional right-angle bending. Under millions of engagement impacts, fatigue life increases exponentially. |
| Dynamic Balance and Counterweight | By precisely blanking the non-working surface of the armature plate, the center of mass distribution of the Relay Armature Soft Magnetic Iron is optimized, reducing the rotational inertia during high-speed movement. This compresses the relay's engagement and release time to the millisecond level, gaining the golden breaking opportunity for the arc-extinguishing chamber. |
| Seamless Encapsulation and Compatibility | The flange edge and welded stop design of the high-voltage contactor casing fully consider the heat-affected zone (HAZ) of laser welding and brazing, reserving precise weld shrinkage allowance to ensure a high first-pass yield rate for the airtight welding of the arc-extinguishing chamber. |
Application Advantages: Born for Extreme Operating Conditions
Perfectly Adapted to 800V High-Voltage Platforms
As voltage levels rise, the relay's arc-extinguishing capability increases exponentially. Our high-purity pure iron yoke provides a stronger magnetic field holding force, effectively elongating and cutting off the high-voltage arc, preventing breakdown.
Stable Operation in Extreme Temperature Ranges
Whether it's cold starts in extremely cold conditions or the high temperatures in the engine compartment when the power battery is operating at full load, the annealed pure iron stamped parts maintain stable magnetic properties, avoiding lag caused by temperature drift.
Resistant to Strong Vibration and Mechanical Shock
The intense vibration environment of new energy commercial heavy trucks and off-road vehicles puts a strain on the mechanical strength of the Relay Armature pure iron plate. Our fatigue-resistant bending design ensures that the armature does not undergo plastic deformation under 30G mechanical impact, preventing false triggering.
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We not only provide standardized electrical pure iron Armature Metal Parts of Relays, but also offer integrated engineering and manufacturing support based on customers' new energy relay structure, magnetic circuit solutions, and automated assembly needs. This support ranges from material evaluation, magnetic circuit structure optimization, mold development, to stable mass production, helping projects to complete product verification and long-term reliable implementation more efficiently.
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