Under the rapid iteration of the new energy and intelligent manufacturing industries, power supply products are continuously upgrading towards higher voltage, higher power, fast charging, and longer lifespan. Whether it is photovoltaic inverters, energy storage PCS systems, or core supporting products such as on-board OBC and industrial power supplies, the downstream terminals have continuously raised the standards for the stability and reliability of power supply operation. According to industry statistics, more than 70% of power supply failures are caused by early latent defects. Such hidden problems cannot be detected through routine testing, and only professional and systematic aging tests can expose and accurately eliminate them in advance.
As a national-level "Specialized, Technologically Advanced, High-Quality and Innovative" (STAIQ) enterprise and the Guangdong Province Engineering Research Center for Intelligent Detection Technology of New Energy Power Electronics, CPET Zhongyuan has been deeply engaged in the field of power electronic reliability testing for sixteen years. Relying on a professional technical team of over ninety people, more than fifty independent patents and software copyrights, it has developed a complete set of intelligent, highly accurate and energy-saving aging testing equipment, laying a solid core technology foundation for the quality upgrade of the domestic power supply industry.
I. Industry Background: Aging tests have shifted from an optional step to an essential requirement for the industry.
The current global market size of power supply testing equipment has exceeded 2.6 billion yuan. Aging tests have completely abandoned the attribute of auxiliary detection and have become a mandatory quality control core in power supply production and manufacturing. Traditional aging equipment generally has four industry pain points: high energy consumption, low precision, no data traceability, and single adaptability to working conditions. The pure resistive energy consumption mode results in high electricity costs, and parameter errors of more than ±1% cannot meet the testing requirements of high-voltage and fast-charging type new power supply； manual recording of test data is error-prone and difficult to trace； and it only supports normal temperature full-load testing, unable to simulate the real and complex working conditions of the product.
Meanwhile, the new international standards such as IEC61558 clearly stipulate that power products must undergo 1000 hours of continuous accelerated aging under an 85℃ high-temperature full-power environment, and all key parameters such as insulation resistance and leakage current must be monitored throughout the process. The intelligent aging equipment of CPET Zhongyuan precisely aligns with the new industry standards, specifically addressing the pain points of traditional testing equipment and meeting the high-quality testing requirements for all types of power products.
II. Enterprise Strength: With sixteen years of dedicated efforts, we have established ourselves as a benchmark in the industry for testing.
Established in Shenzhen in 2010, Zhongke Yuan focuses on the field of power electronic reliability testing. It is a leading enterprise in the research and production of electronic load modules and overall aging testing equipment in China. The company currently has over 300 employees, with the proportion of R&D personnel exceeding 30%. It has established a complete industrial system integrating independent research and development, precise manufacturing, and comprehensive services, and its comprehensive strength remains at the forefront of the industry.
Core qualifications and industrial scale:
●It possesses authoritative qualifications such as national-level high-tech enterprises, national-level "small giant" specialized and innovative enterprises, and double-software enterprises.
● Relying on the provincial-level engineering technology research center platform for intelligent detection of new energy power electronics, we focus on the research and development of core technologies;
● With over 50 invention patents, utility model patents and software copyrights in hand, the core technologies are completely under our own control.
●Serving over 4,000 high-quality customers worldwide, we have deep collaborations with leading enterprises such as Huawei, BYD, Optiobond, Great Wall, Maoshuo, Lanwei, Philips, Samsung, and CVTE Visual Source. Our equipment has been successfully implemented and put into mass production lines.
● We have established a comprehensive network of over 40 cooperative agents across the country. Our products are sold far beyond borders to Europe, America, and Southeast Asia. The annual output of load modules and complete equipment exceeds one million units.
III. Technical Core: Four Core Technologies, Re-defining the Standard for Intelligent Aging Testing
With years of technical accumulation, Zhongkong Yuan has broken through the technical barriers of the industry. By leveraging four core self-developed technologies, it has achieved a comprehensive upgrade in energy-saving, accuracy, intelligence and comprehensiveness of aging tests.
1,Energy feedback energy-saving technology, reducing energy consumption by 80% directly.
Equipped with our self-developed bidirectional energy feedback module, it adopts advanced soft-switching inverter technology. It recovers the electrical energy generated during the power supply aging process and feeds it back into the grid for recycling. The energy-saving conversion efficiency can reach over 85%. This completely overturns the traditional pure energy consumption mode of resistive loads and significantly reduces the energy consumption cost for enterprise mass production testing.
2,High-precision digital control, with parameter accuracy reaching ±0.1%
It adopts a high-end hardware architecture of self-developed MCU + NI data acquisition card, supporting five load modes including CC/CV/CR/CP/LED. It comprehensively covers voltage ranges from 3V to 1500V and current ranges from 1A to 1000A. It is suitable for all types of fast charging, high voltage, and high-power power supplies. The device is equipped with over 30 high-density sensors to achieve millisecond-level data collection. It can monitor core indicators such as temperature, ripple, and operating efficiency in real time, and automatically issue warnings for abnormal conditions and accurately identify defective products.
3,Full-scale environmental simulation, covering all extreme tests
The integrated temperature control system ranging from room temperature to 150℃ and the voltage fluctuation simulation composite testing system can complete 72-168-hour uninterrupted accelerated aging tests, truly replicating extreme application scenarios such as high-temperature workshops and complex working conditions. It is equipped with independent channel control and four-layer safety protection including overvoltage, overcurrent, overtemperature, and smoke detection, and supports multi-channel parallel testing in a single cabinet, increasing the overall testing efficiency by 50%.
4,Modular flexible architecture, suitable for both mass production and customization scenarios
The unit modular and detachable design enables flexible cabinet layout and convenient relocation. It supports three application modes: independent testing of a single machine, parallel operation of multiple machines, and integration into an automated production line. For special products such as photovoltaic inverters, energy storage PACKs, and vehicle-mounted power supplies, customized solutions including liquid cooling integration, high-voltage isolation, and fully automatic loading and unloading can be provided to achieve multi-scenario adaptation for a single device and reduce the equipment investment cost for customers.
IV. Technical Value: Full-process empowerment, strengthening the product quality defense line
The Kexian intelligent aging equipment of CPET can comprehensively cover all the life cycle stages of power supply product research and development, pilot production, and mass production, including the entire process from research and development, pilot production to mass production quality control. During the research stage, through multi-condition stress tests, design flaws can be quickly identified; during the pilot production stage, the product's batch consistency can be accurately verified, and the production process can be optimized; during the mass production stage, 100% full inspection screening is achieved for the products, effectively eliminating early failure products, helping customers reduce the power supply after-sales failure rate by more than 60%, and increasing the product pass rate to over 99.8%.
The system supports centralized monitoring by computers, automatic retention of test data, and one-click generation of test reports. All data can be traced and analyzed throughout the process. The test standards fully comply with international and domestic norms such as ISO, IEC, and GB/T. It can directly be adapted for various product certifications like CE, UL, and CCC, helping customers quickly access the global market access channels.
V. Conclusion
Upgrading industries, quality comes first; quality determines success; testing is the foundation. With sixteen years of in-depth technical research and practical accumulation, CPET Zhongyuan has, through its cutting-edge technology, mature solutions and market validation with leading customers, developed high-end aging testing equipment that is energy-efficient, precise, intelligent and flexible in adaptation. In the future, Zhongyuan will continue to deepen its focus on the power electronic reliability testing field, continuously empowering the upgrade of power supply industries through technological innovation, helping enterprises create core products with high reliability, and jointly building a new pattern of high-quality development in the new energy industry.
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