Major milestone! Yechao Electric's 230T-class rigid mining truck oil-to-electricity conversion project has entered the heavy-load operation phase!

Strategic choice:

In the broader context of national energy strategy and energy conservation and emission reduction, Yechao Electric officially launched the heavy-duty mining truck oil-to-electricity conversion project in January 2023.

This move marks the company's entry into a crucial strategic transformation period since 2023, and will inject significant technological strength into the achievement of the global carbon neutrality goal.

Recently, the first prototype of the project successfully completed a half-load test in a large mining area in Inner Mongolia and is about to commence a full-load test, marking a significant breakthrough in the technology of converting 230T rigid mining trucks from oil to electricity.

A. Promoting the project throughout its entire cycle: from research and development design to field testing in mining areas

Since the launch of the project, the technical team of Yechao Electric has steadily advanced various tasks in stages and achieved technological breakthroughs through multiple rounds of optimization iterations

1. R&D design and preliminary testing phase (February 2023- February 2024)

In February 2023, the project officially entered the data research and design phase. The team dismantled the original diesel engine and generator of the mining truck, completed the replacement of the vehicle control system and the main electric wheel drive control system, and also renovated the hydraulic power system. Key equipment such as a thermal management system and video surveillance were added to the mining dump truck.

Product delivery and installation will commence in May 2023.

The debugging phase will begin in July 2023, and the whole vehicle operation test will be launched at the end of July. Subsequently, light load, half load, and heavy load operation tests will be completed successively at the test site, accumulating a large amount of valuable first stage technical data.

Against the backdrop of national energy strategy and energy conservation and emission reduction, Yechao Electric officially launched the heavy-duty mining truck oil-to-electricity conversion project in January 2023.

This move marks the company's entry into a critical strategic transformation period since 2023, and will inject significant technological strength into the achievement of the global carbon neutrality goal.

Recently, the first prototype of the project successfully completed a half-load test in a large mining area in Inner Mongolia, and is about to commence a full-load test, marking a significant breakthrough in the technology of converting 230T rigid mining trucks from oil to electricity.

2. System optimization and version upgrade phase (March 2024 - July 2025) Based on the experimental data from the first phase, the technical team conducted technical analysis and product iteration to address the issues exposed in the first complete vehicle system. Through redesign and optimization, they successfully developed the Mining Dump Truck V2.0 control system and completed relevant intellectual property applications.

In August 2024, the V2.0 version was successfully installed and debugged, followed by a one-year light and heavy load test at the test site, laying a solid technical foundation for practical application in mining areas.

3. Field test phase in mining area (August 2025 to present) In August 2025, the first prototype was completely disassembled and sent to a large mining area in Inner Mongolia for large-gradient delivery tests. After more than a month of installation, preparation, and debugging.

In November 2025, a half-month light-load test was initiated, during which the on-site engineer team completed dynamic debugging of various parameters to ensure that the data met the acceptance standards for the mining area.

In December 2025, the prototype entered the half-load testing phase, with tests conducted under severe road conditions such as heavy-load uphill, heavy-load uphill startup, and heavy-load downhill. As of December 8th, all parameters of the half-load test have performed normally, and the final test under ultra-low temperature conditions is about to be conducted - the full-load test. Currently, the lowest temperature in the mining area has reached -25℃.

B. Multi-dimensional rigorous testing: comprehensively verifying the performance of new energy mining trucks

To ensure that the modified mining trucks can adapt to the complex working conditions in the mining area, this test conducts comprehensive testing around six core dimensions, covering key areas such as mechanical performance, electronic control system, and environmental adaptability: 1. Continuous load-bearing driving test on complex terrain to test the operational stability and endurance of the vehicle control system, electric drive system, battery system, suspension system, lubrication system, steering system, and cooling system; 2. Scenario testing for conventional braking and emergency braking to verify the braking response speed, safety performance, and wear level of brake components, while also testing the efficiency of energy recovery and the effectiveness of algorithms; 3. Performance testing under extreme road conditions, including climbing experiments on slopes up to 15 degrees and verifying turning radius, to test the peak output power, maximum torque, and collaborative capability with the electric drive system of the new energy powertrain; 4. Power supply test of the hydraulic system to test the continuous output capability of the new energy powertrain system to the mining truck's hydraulic system; 5. Adaptability test in extremely cold climate to verify the stability and reliability of the new energy equipment and electric drive system of the mining truck in ultra-low temperature environments in the north; 6. Other special tests for new energy modification, covering the full-process performance verification required for the conversion of mining trucks from oil to electricity.

C. "Yechao Cloud" platform empowerment: achieving data-driven technology iteration

Currently, all data from the test vehicle basically meets the design requirements. All test data has been uploaded in real-time to the "Yechao Cloud" new energy smart operation and maintenance platform independently developed by Yechao Electric. This provides precise on-site data support for R&D engineers, aiding in the optimized design of the next-generation products.

As a remote operation and maintenance platform based on the industrial Internet, "Yechao Cloud" can achieve real-time collection and analysis of on-site data. It has previously assisted enterprises in quickly realizing product standardization for new energy electric locomotives used in tunnel construction. In the future, this platform will continue to undertake the important task of remote operation and maintenance, playing a key role in areas such as design optimization of new energy mining trucks and remote technical assistance, and ensuring the technological upgrading of Yechao Electric's new energy heavy equipment.