On December 11th, the Gaogong Energy Storage Annual Conference grandly kicked off in Shenzhen, where experts, scholars, and industry elites from upstream and downstream of the industry chain gathered to discuss the opportunities and challenges of the new stage of energy storage industry development. Dr. Huang Lang, the Chief Engineer of Light Energy, delivered a brilliant speech titled "Deep Power Electronics, Promoting High Order Evolution of Storage and Charging" at this annual conference. At the same time, at the High Tech Global Awards ceremony held at the same time, the company successfully won the "2024 New Enterprise" award for solar energy.

PET technology innovation: cost drops sharply, efficiency leaps forward

Dr. Huang Lang traced the historical evolution and latest progress of power electronic transformers (PET) in his speech. He pointed out that since the concept of electronic transformers was first proposed by McMurray of General Electric in 1968, PET technology has made significant progress after more than half a century of development, with significantly reduced costs, and gradually achieved commercial applications in multiple fields such as optics, storage, charging, and networking.

Based on this foundation, with strong research and development capabilities, we have independently developed a power electronic transformer based on a hybrid three-level economical compact topology technology. This not only reduces costs by more than 50%, but also achieves a maximum efficiency of up to 98.5%, providing more efficient and reliable solutions for scenarios such as AC/DC hybrid distribution networks, flexible interconnection, electric vehicle overcharging, and energy storage.

Pioneering matrix based energy storage system, leading the development of third-generation energy storage

Dr. Huang Lang pointed out that currently, the refined penetration of power electronics is leading the direction of energy storage evolution, and the third-generation energy storage system characterized by package level management, flexible grouping, controllable reconstruction, and active safety is gradually becoming a trend. Adhering to the concept of "safe and efficient use of every kilowatt hour of electricity", our self-developed battery module controller deeply penetrates into the DC side of the battery, achieving module level active management of electrical, thermal, and safety. We use a 3x10S high overload capacity string type PCS or high-efficiency high-density PET based on silicon carbide devices to achieve core network connection. Through self-developed battery module controllers and grid type inverters, we aim to establish an intelligent, flexible, and efficient connection between solar cells and the power grid for solar energy. We are the industry's first matrix energy storage system, ensuring that users can safely and effectively use every kilowatt hour of electricity. Starting from the safety of battery cells and electrical safety, comprehensive safety design and management have been carried out for active safety technologies such as outlier analysis, internal temperature estimation, thermal runaway warning, and active bypass based on EIS for optical energy. The matrix based energy storage system "Easy Cube" E ³ Matrix launched by the company will comprehensively lead the development of third-generation energy storage. Taking the 10kV direct mounted energy storage power station of Wanguo Data Chongqing Soil and Water Data Center as an example, the capacity of the power station is 1.2MW/2.4MWh. The industry's first power electronic transformer (PET) replaces traditional transformers and PCS, achieving high reliability and efficiency of energy storage systems directly connected to the 10kV distribution network of data centers. It uses one SiC based power electronic transformer and seven matrix energy storage cabinets with module level fine management, achieving a charging and discharging depth of 99% and a comprehensive efficiency (including self consumption) of the entire station of 90%.

PET direct hanging charging matrix E4Matrix SC

Dedicate the "Four Pole" Charging Experience

Extremely comprehensive - adopting a variable energy storage and charging integrated and electromechanical split design, supporting different charging powers of 120kW-750kW, suitable for supercharging stations, public charging stations, light storage charging and other scenarios, and adaptable to various vehicle models;
Minimalism - modular, high-frequency, and DC design, saving 15% of land area occupation, reducing 20% of city capacity occupation, and reducing 38% of transformer and transformation equipment capacity;

Top speed - supports 750kW top speed charging, truly achieving a 1-minute range of 100 kilometers, suitable for incremental supercharging models, electric heavy-duty trucks, etc., moderately ahead of time, bringing a top speed charging experience and reducing waiting;
Extreme efficiency - using silicon instead of copper, with no no-load loss, the highest system efficiency can reach 97.5%, which is more than 5% higher than traditional AC solutions.

Honorary coronation

 Won the "2024 New Enterprise" award

In response to the charging difficulties of electric vehicles such as long charging time, inability to match single pile power, and insufficient grid access capacity, the PET direct hanging charging matrix E4Matrix SC has been launched for optical energy, replacing traditional equipment with power electronic transformers to achieve full chain power electronicization, providing users with an extremely complete, minimalist, fast, and efficient "four pole" charging experience:
At the highly anticipated Gaogong Global Awards Ceremony, the company won the "2024 Gaogong Global Award - New Enterprise of the Year 2024" award for solar energy. This award is not only a full recognition of the achievements made by Light Energy in the field of energy storage, but also a high recognition of the company's future development potential. Since its establishment, Light Energy has been committed to promoting innovation and application of energy storage technology, focusing on providing efficient and reliable solutions. Faced with the grand narrative of global energy transformation and the "dual carbon" goal, it has injected strong impetus into the high-quality development of the industry by keeping up with the pace of the times, constantly breaking through technological bottlenecks, and promoting the development of light energy.
In the future, for solar energy, we will continue to promote innovation and application of energy storage technology, continuously improve the company's core competitiveness, and contribute more to the global energy transformation and sustainable development.