On November 12, 2025, the 4th World Power Battery Conference, hosted by the People's Government of Sichuan Province and co-organized by the Yibin Municipal People's Government, the Department of Economy and Information Technology, and the Equipment Industry Development Center of the Ministry of Industry and Information Technology (MIIT), grandly opened in Yibin, Sichuan. Mr. Yang Hongxin, Chairman and CEO of SVOLT Energy, was invited to deliver a keynote report titled "Semi-solid-state Industrialization and the Battery Application Safety Grading System," during which he officially released the BeeShield Safety Grading System.
Mr. Yang Hongxin stated that safety is not only an inherent design at the cell level but also requires the establishment of comprehensive protection at the system level.
SVOLT, for the first time, proposed the "BeeShield Battery Safety Grading System," which uses "thermal runaway prevention and control capability" as the core metric. This system defines the safety level for each generation according to application scenarios and provides quantitative specifications for each generation using specific indicators for cells and systems.
SVOLT began its layout and development in battery safety technology as early as 2019. BeeShield 1.0 focused on normal usage scenarios. BeeShield 2.0 ensured the safe evacuation of personnel in sudden incident scenarios. BeeShield 3.0 had already comprehensively met all requirements in the "Safety Requirements for Power Batteries for Electric Vehicles" issued by the MIIT in March of this year, ahead of schedule. Compared to BeeShield 3.0, BeeShield 4.0 has been enhanced across all dimensions: intrinsic safety, passive safety, and active safety.
In Intrinsic Safety, the use of semi-solid-state technology reduces the probability of thermal runaway occurrence.
In Passive Safety, the Dragon Scale Armor design achieves thermal-electrical separation, reducing system thermal propagation. Its advantages include:
1. Preventing thermal runaway flames from directly impacting the vehicle chassis or passenger cabin.
2. Keeping ejected materials away from cell terminals and high-voltage electrical components, reducing the risk of short-circuit arcing.
3. Preventing the burning of sampling and control units, ensuring the proper operation of water circulation suppression strategies.
In Active Safety, a full-lifecycle AI large model iterates upon the original cell mechanism + AI model, achieving an improvement in early warning accuracy.
Through the establishment of the "BeeShield Safety Grading System" and the implementation of "BeeShield 4.0," SVOLT has successfully transformed battery safety from an abstract concept into a clear and measurable set of engineering practices. This not only systematically builds a comprehensive, three-pronged safety moat encompassing "intrinsic, passive, and active" safety but also redefines the safety paradigm for power batteries with industry-leading transparent standards, providing users with trustworthy safety throughout the entire product lifecycle.
Currently, NCM (Nickel Cobalt Manganese) chemistry remains the preferred choice for high-end and emerging markets, but thermal runaway in NCM batteries accounts for up to 70% of new energy vehicle fire incidents. Regarding intrinsic safety, SVOLT addresses the thermal stability issues of NCM batteries through semi-solid-state technology. By introducing non-flammable, non-corrosive solid-state electrolytes, it enhances safety without sacrificing performance or increasing manufacturing costs. The globally pioneering "Electrolyte Thermal Composite Transfer Printing Process" provides the technical solution for achieving both "rapid mass production" and "higher-level safety" in the demanding race for semi-solid-state batteries.
This process, through material innovations (such as optimizing the separator adhesive layer and semi-solid coating formulation) and production process parameter design, achieves nano-level protection for the electrode sheets, replacing traditional cathode surface coating techniques.
During development, SVOLT overcame two major challenges: First, the innovative development of a "Polarity Transformation Adhesive Formulation," achieving highly efficient transfer of the coating from the base film to the electrode sheet, with the transfer rate increasing from about 20% to over 95%. Second, the customization of a "Contour Gradient Hot Pressing Technology" solved the coverage consistency issues caused by uneven electrode sheet thickness.
This process offers 100% production line compatibility, requiring no additional investment, making it the "lowest-cost and fastest mass-production solution for semi-solid-state batteries in the industry." Cells utilizing this process can achieve 100% no thermal propagation. In short-circuit conditions, the leakage current is reduced by 50%. Throughout the product's lifecycle, the failure rate related to voltage difference is reduced by 18.5%, consistently enhancing product uniformity, safety, reliability, durability, and stability.
Regarding the mass production plan for semi-solid-state batteries, SVOLT has already built a dedicated 2.3 GWh production line for semi-solid-state batteries and completed the development of the first-generation 270 Wh/kg prismatic cell, which is about to enter batch trial production (C-sample). This product has already received orders from a well-known European electric vehicle brand and has been successfully designated for a central state-owned enterprise's eVTOL project. In 2026, the first-generation semi-solid-state batteries will ramp up mass production and achieve batch delivery, while the second-generation 400 Wh/kg semi-solid-state cell will be under development. By 2028, the development of a 450 Wh semi-solid-state pouch cell will be completed.
SVOLT's technological breakthroughs in the field of semi-solid-state batteries not only secure a "technical high ground" in performance but also establish an industry "safety cornerstone" based on battery safety grading. This initiative enhances the company's core competitiveness and, by promoting technological transparency and a trustworthy system, fosters the sustainable development of the entire industry chain. Against the backdrop of global supply chain restructuring, these two pillar technologies will lay a solid foundation for national energy security and industrial resilience.
Next：None
Previous：What Is an Inverter and How Does It Work?
