LANDWORLD On-Board Charger (OBC) Efficiency Testing

1. Introduction

As electric vehicles become more widespread, the on-board charger(OBC) is essential for fast and reliable charging. Efficiency—how effectively AC power is converted to DC for the battery—is critical for reducing energy loss, improving driving range, and lowering operating costs.

The following sections outline the key aspects of OBC efficiency testing and their value for EV applications.

2. Testing Standards and Objectives

LANDWORLD conducts OBC efficiency tests in full compliance with GB/T 40432-2021 “Conductive Charging System for Electric Vehicles – On-board Charger”.

The main objectives of the tests:

• Charging performance evaluation – Measure energy conversion  efficiency to assess real-world charging speed and effectiveness.

• Energy optimization – Identify losses during charging to  enhance energy management and extend vehicle range.

• Reliability and safety assurance – Detect abnormal efficiency  that may indicate potential faults, ensuring stable operation.

• Regulatory compliance – Confirm adherence to industry standards  and facilitate vehicle certification.

• Support R&D – Provide data to guide product optimization and technical innovation.

3. Testing Procedure

3.1 Sample Selection

Only factory-new OBC units with intact functionality and  appearance are used for testing.

3.2 Preparation

• Equipment setup – Power supply, electronic load, and precision power analyzer configured according to OBC specifications; temperature  sensors installed.

• Parameter configuration – Measurement ranges for voltage,  current, and power, and sampling frequency set for accurate readings.

• Safety measures – Grounding and over-voltage/over-current protections applied to secure testing.

3.3 Result Verification

Compare measured results against GB/T 40432-2021 requirements.

The tested product should meet the above standards.

4. Test Results and Conclusion

LANDWORLD OBC efficiency testing confirms that:

• OBCs fully comply with industry standards across all operating  conditions.

• Above-standard efficiency is achieved under rated and common  load ranges.

• The results ensure stable, energy-efficient charging for  electric vehicles.

5. Customer Value

• Faster charging cycles – shorter downtime for EV fleets and private vehicles.

• Higher energy efficiency – longer range per charge, lower energy costs.

• Regulatory compliance – easier vehicle certification and faster time-to-market.

• Proven reliability – reduced risk of faults and enhanced operational confidence.

6. Commitment to Innovation

At LANDWORLD, product performance and user safety are our top priorities. OBC efficiency testing focuses on optimizing and validating our own OBC products, ensuring they deliver reliable, high-efficiency charging.