In today’s electric vehicle (EV) ecosystem, the stability and safety of the drivetrain rely heavily on every technical component — from the controller to the battery system and high-voltage connectors. One often overlooked yet critical element is the High Voltage Cable Harness (HV Harness), especially the type that connects the battery pack to the rear Electric Drive Unit (EDU).
1. What is an HV Harness and why is it critical in EVs?
The HV Harness is a specialized high-voltage cable system designed to transmit high-voltage DC power between key components in electric vehicles — most commonly from the main battery pack to the rear electric motor (EDU). Acting as the vehicle’s “power artery,” the HV harness is far more than just a bundle of wires. It is a fully engineered system with electrical insulation, EMI shielding, thermal resistance, and structural integrity.
This specific Battery to Rear EDU HV Harness plays a vital role by delivering consistent and safe power to the rear motor, enabling smooth acceleration, efficient energy use, and stable vehicle performance.
2. Construction and Key Technical Specifications
| Specification | Details |
|---|---|
| ⚡ Rated Voltage | 600V – 800V DC |
| 🔌 Rated Current | 150A – 250A |
| 🛡️ Insulation Material | XLPE or high-temperature silicone |
| 🔧 Connector Type | Waterproof, vibration-proof HV industrial connectors |
| 🌡️ Thermal Resistance | Operating range from -40°C to +125°C |
| 🔗 EMI Shielding | Integrated shield layer to prevent electromagnetic interference |
| 📜 Certifications | ISO 19642 / LV215 / RoHS compliant |
Note: Technical specifications may vary depending on the specific model or customer requirements.
3. Key Advantages of SHOGO’s HV Harness
| Advantage | Description |
|---|---|
| ✅ Superior insulation | Prevents leakage or arc faults even under load |
| ✅ Vibration-resistant | Built for long-term use in dynamic driving conditions |
| ✅ EMI protection | Safeguards onboard electronics and ECU from interference |
| ✅ Compact design | Fits tight engine bays and modular EV platforms |
| ✅ Customizable | Fully configurable to fit specific EV architectures |
4. Functional Role in the EV Power System
-
Supplies primary propulsion energy from the battery to the rear motor
-
Maintains electrical safety by minimizing the risk of high-voltage leakage
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Prevents voltage drops, especially during high-load conditions
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Supports thermal or sensor signal integration to BMS or ECU if needed
5. Industry Trends & Why Quality HV Harnesses Matter
As the EV industry surges globally, with over 10 million electric vehicles sold annually (BloombergNEF), the demand for high-quality high-voltage components has never been higher. A substandard cable can cause short circuits, motor failure, or even vehicle fire hazards.
That’s why choosing a certified, vehicle-specific HV harness is a non-negotiable priority in any EV production or retrofit project.
6. Versatile Applications Across EV Segments
| Vehicle Type | Use Case |
|---|---|
| 🚘 Small EVs | Connects underfloor battery to rear-mounted motor |
| 🚙 Electric SUVs | Transfers power from center-mounted battery to rear EDU |
| 🚚 Light electric trucks | Powers independent dual-motor rear axles |
| 🛻 Hybrid vehicles | Supports auxiliary high-voltage motor systems |
📞 7. Contact Us for Quotation or Technical Consultation
SHOGO VIETNAM – Premium EV Component Manufacturer & Supplier
📧 Email: info@shogovn.com
