Products Description
This product is a Metalized Ceramic Alumina Insulator designed specifically for HVDC contactors, serving as the hermetic sealing and electrical insulation component for high-voltage DC relays in new energy vehicles. Acting as a critical insulation barrier between the internal arc-extinguishing chamber and external metal parts, its quality directly determines the relay's long-term reliability under conditions of high voltage, high current, and high temperature.
The housing utilizes a high-purity alumina ceramic substrate (≥95% purity) combined with a high-strength metallization process, meeting the requirements for hermetic packaging via vacuum brazing or silver-copper soldering. This component is specifically engineered for EV Alumina Ceramic Relay Housings and is suitable for the hermetic chamber structures of high-voltage DC relays operating on 800V platforms and above.
Product Features and Functions
Insulation and Isolation
The alumina ceramic cavity separates the high-voltage contacts from the metal parts of the housing, enhancing the overall creepage distance of the product. It is suitable for the insulation design of HVDC high-voltage circuits and meets the basic insulation requirements for HVDC Contactor High Purity Ceramics Shell For Relay. It helps to prevent high-voltage leakage and arc short-circuit faults.
Structural Support
Customized conductive copper pillars are embedded within the Alumina Ceramic Shell, providing a precise mounting base for the switch contacts. The high-strength ceramic substrate withstands the mechanical shock of contact opening and closing, preventing chamber deformation that could lead to contact misalignment.
Process Compatibility
The metallized end-face layer is compatible with various metal joining processes, such as laser welding, vacuum diffusion welding, and high-frequency brazing, allowing for direct hermetic sealing with metal rims and copper inserts, thereby suiting automated customer assembly lines.
Environmental Resilience
The Metallized 95% Alumina Ceramic Parts substrate offers resistance to moisture, acidic/alkaline condensation, and ozone aging. It is suitable for complex, hot, and humid operating environments, such as automotive engine compartments and outdoor rail control cabinets, maintaining stable insulation performance without significant degradation over long-term use.
Technical Superiority
Customized Material Formulation
We adjust the alumina ceramic powder composition and metallization paste formulas based on specific voltage ratings and operating environments. Materials are specifically optimized for scenarios involving high altitudes, high humidity, and frequent high-current interruption.
Proprietary Metallization Process Optimization
Self-developed optimization of metallization process: We have independently developed the sintering curve for aluminum oxide metallization. Different from the general process, the coating density of the finished Metallized Alumina Ceramics for Electrical Components is higher, and its resistance to humidity and heat corrosion is superior to the industry standard.
Simulation-Driven R&D
In the early stage, by relying on electrical simulation software, we can predict issues related to cavity insulation and thermal deformation. We can then optimize the structure of the Relay Ceramic Part in advance, thereby reducing the cost for customers to repeatedly revise the samples later.
Extreme Operating Condition Validation
Before mass production, the Metallized Welded Ceramic Housing completed all reliability tests, including temperature variation cycles, humidity aging, power frequency withstand voltage, and mechanical vibration. The test items were in line with the IATF16949 automotive electronic verification standards for vehicles.
Industry Applications
| New Energy Vehicles | Metallized Ceramic Components for DC Relays ensure the safety and reliability of high-voltage systems in electric vehicles. |
| Energy Storage Systems | Mo-Mn Metallized Alumina Ceramics used in energy storage inverters enhance system efficiency and service life. |
| Industrial Power Electronics | Aluminum Oxide Metallized Ceramics for DC Relays are utilized in high-voltage switchgear, meeting the demands of industrial automation. |
contact us
If you are currently selecting Metalized Ceramic Alumina Insulators or developing their structure, please feel free to send us your product drawings and technical specifications. Our engineers can promptly provide recommendations on material selection and process optimization, as well as quotations for prototypes.
Hot Tags: metalized ceramic alumina insulator, China metalized ceramic alumina insulator manufacturers, suppliers, factory
