Products Description
Automotive relay cores are not standard, generic components, but rather highly engineered functional component systems, primarily composed of magnetic circuit components, moving contact structures, reset elastic systems, and insulation support units.
This product is positioned as:
The core execution structure of automotive-grade relays
Used for reliable isolation and switching between control and power circuits
An industrial component designed for long lifespan, high consistency, and mass production
Its design goal is not to pursue extreme parameters, but rather to achieve stable and controllable behavior throughout the vehicle's lifecycle.
Main Functions: Constructing the underlying logic of the automotive control system
Signal Amplification and Isolation
Using a very small current (a weak signal from the ECU) to control the coil, a powerful magnetic field is generated to connect high-current loads (such as headlights and wiper motors). Simultaneously, electrical isolation is achieved between the control circuit (low voltage) and the load circuit (high voltage), protecting the vehicle's computer.
Automatic Switching Function
Upon receiving a control signal, the magnetic core engages, connecting the circuit; when the signal disappears, the Straight Coil Core releases, the spring resets, and the circuit disconnects. This automatic switching function is fundamental to the automated control of automobiles.
Circuit Protection and Overload Indication
Used in conjunction with fuses, the circuit is cut off by the protective device when an abnormality occurs. The Cold Heading Pure Iron Core acts as the actuator, and its operating status (such as a dual-coil relay) can sometimes also serve as a fault feedback signal transmitted back to the central control system.
Material Advantages: Carefully selected weather-resistant materials ensure long-term service life
Magnetic Materials:
* Electrical Pure Iron: Used in applications requiring extremely high permeability to maximize magnetic flux.
* Silicon Steel Sheets: Used to prevent eddy current heating, particularly suitable for high-power or frequently operating relays.
Conductive Materials (Enameled Wire): Utilizes high-temperature resistant enameled wire (Class 155 F or Class 180 H). The insulation layer of this wire will not melt or carbonize at high temperatures and has excellent oil and chemical resistance, adapting to the complex environment of automotive engines.
Structural Materials (Engineering Plastics): The skeleton and shell materials are typically made of glass fiber reinforced engineering plastics certified as flame-retardant (UL94 V-0). They not only have high mechanical strength but also excellent resistance to thermal shock (high CTI value), preventing tracking.
Application Advantages: Reliability Across All Scenarios
Vehicle Control System
Used to control window operation, door locks, rearview mirror folding, seat adjustment, etc. These scenarios require relay chips with extremely high operating life (up to hundreds of thousands of cycles).
Powertrain and Chassis System
Used for starter motors, fuel pumps, ABS pumps, and cooling fans. These scenarios involve high current and high ambient temperatures, requiring relay chips with strong surge resistance and high-temperature resistance for Coil Core for Electromagnetic relay.
New Energy and Electric Vehicles (EV/PHEV)
With the development of new energy vehicles, the demand for high-voltage DC relays has surged. Although the structure is slightly different, our core magnetic circuit design experience extends to this area, used to control the pre-charging circuit and heaters of the Battery Management System (BMS).
contact us
If you are looking for a relay core supplier with engineering understanding, manufacturing stability, and long-term collaborative capabilities for your automotive relay project, we can participate in the matching process during the design phase, providing structural support for the reliability of your system. Feel free to visit our inquiry page and communicate directly with our engineering team.
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