EV Multi-in-One eDrive System Enclosure

Product Overview

This automotive-grade, customized high-pressure die-cast aluminum housing serves as the core structural enclosure for multi-in-one eDrive systems in modern electric vehicles (xEVs). Engineered to integrate multiple power electronic modules—including the On-Board Charger (OBC), DC-DC converter, Power Distribution Unit (PDU), and Motor Control Unit (MCU)—it delivers a unified, precision-fit solution that meets stringent automotive reliability standards.

Core Manufacturing Processes

High-Pressure Die Casting (HPDC): Formed in a single shot from high-quality aluminum alloys (e.g., ADC12, A380), the weld-free structure provides excellent mechanical strength, integral EMI shielding, and enables significant lightweighting for vehicle applications.

Precision CNC Machining: Critical surfaces, sealing grooves, and mating interfaces are CNC-machined to tolerances as tight as ±0.02mm, ensuring precise component alignment and robust sealing integrity.

Standardized Surface Finishing: Options include deburring, shot blasting, passivation, and conductive chemical conversion coating (e.g., trivalent chromate / Alodine) to enhance corrosion resistance and ensure low-contact-impedance EMI shielding in harsh under-hood environments.

Key Advantages & Features

Integrated Multi-Stage Layout: A stepped internal mounting platform with high-density positioning studs flexibly accommodates 3-in-1 to 8-in-1 integrated architectures, significantly reducing overall system volume and high-voltage cabling complexity.

IP67 Waterproof Sealing: A continuous peripheral sealing groove, combined with strategically positioned fastening points, compresses the dedicated silicone O-ring to effectively block dust, moisture, salt spray, and grease ingress.

Advanced Liquid Cooling Channels: Built-in cooling circuits are routed close to high-heat components (IGBTs, bus capacitors), with dedicated sidewall ports for coolant inlet and outlet. This design ensures efficient heat dissipation and prevents thermal derating during fast-charging or high-torque events.

Robust Automotive Reliability: The rugged aluminum housing withstands ambient operating temperatures from -40°C to +105°C, continuous vibration, and mechanical shocks, fully complying with automotive-grade reliability standards (ISO 16750 / OEM DV&PV specifications).

Excellent EMC/EMI Shielding: The fully enclosed metal cavity forms a continuous Faraday cage, effectively suppressing radiated emissions from internal high-voltage switching while resisting external electromagnetic interference.

Standardized Interface Compatibility: Pre-engineered, high-precision mounting interfaces ensure standardized, leak-free docking with high-voltage connectors, low-voltage signal harnesses, coolant tube fittings, and pressure-relief vent valves.

Application Fields

Core Applications: Multi-in-one eDrive electric control systems for EV passenger and commercial vehicles, including 3-in-1, 5-in-1, and 8-in-1 power domain controllers and integrated on-board power assemblies.

Extended Applications: Power Conversion System (PCS) enclosures for energy storage, industrial servo drives, and power electronics for special-purpose vehicles.

Quality Assurance

100% Leak Testing: Every finished housing undergoes rigorous air-tightness testing to validate leak-proof performance under defined leak-test pressure specifications.

Full Dimension Inspection: All critical tolerances are 100% inspected to guarantee strict batch-to-batch assembly consistency.

Traceable Test Reports: Verification documentation for salt spray resistance, vibration & shock, and high-low temperature thermal cycling is available upon request.

Q1. What types of machining services do you offer?

We provide comprehensive CNC turning and milling services. FlexiTurn machines are equipped with 8-station programmable turrets and support both turning and 5-axis milling operations, making them suitable for everything from simple cylindrical parts to complex multi-axis components.

Q2. What materials can you work with?

We machine a wide range of materials including carbon steel, stainless steel, aluminum, plastics, and other engineering-grade materials. If you have a specific material in mind, just send us your requirements and we'll confirm feasibility.

Q3. What is your typical lead time?

Lead times vary depending on part complexity, quantity, and material availability. For prototypes and small-batch runs, we typically deliver within 5–10 business days. For high-volume production, we'll provide a customized schedule after reviewing your drawings. Contact us with your project details for an accurate timeline.

Q4. How do you price your services?

Pricing is based on several factors: material cost, machining time, tooling requirements, setup complexity, and order quantity. We offer competitive rates for both low-volume prototypes and high-volume production runs. Request a quote with your CAD files or drawings and we'll get back to you within 24 hours.

Q5. What quality control measures do you have in place?

We follow strict quality control procedures throughout the machining process. Our CNC systems support programmable precision down to 1 μm, ensuring high accuracy and repeatability. Every batch undergoes dimensional inspection before shipping, and we can provide inspection reports upon request.