China's electric vehicle industry crossed a historic threshold on July 1 when two mandatory national standards took effect, establishing the world's first "no fire, no explosion" requirement for EV batteries after thermal runaway. The rules — GB 38031-2025 for traction batteries and GB 18384-2025 for vehicle-level safety — mark the first time China has rolled out its two core mandatory safety standards on the same day, creating a dual-layer protection architecture that industry veterans describe as the strictest battery safety regime ever written.
From warning to prevention
The philosophical shift is fundamental. Under the old GB 38031, a traction battery could catch fire or explode after thermal runaway as long as occupants received at least five minutes of warning. The new standard mandates system-level intrinsic safety: batteries must achieve "no fire, no explosion" even when a single cell undergoes thermal runaway.
"This is a shift from after-the-fact handling to upfront prevention," said Liu Kai, executive secretary general of the NEV battery branch of the China Association of Automobile Manufacturers, in a report by China Automotive News. The change imposes stricter requirements on system-level thermal safety management, aiming to eliminate at the source the safety threats that fire or explosion poses to occupants.
To better reflect real-world accident causes, the new standards add two mandatory tests: bottom impact and long-term fast-charging cycling. These cover two high-frequency scenarios — vehicle underbody strikes and high-frequency ultra-fast charging — that previous standards did not adequately address. The bottom impact test simulates a vehicle hitting debris or a curb at speed, while the cycling test replicates the stress of repeated ultra-fast charging sessions that can degrade cell separators over time.
Physical power cut mandate
The vehicle-level standard GB 18384-2025 delivers an equally disruptive upgrade. Its core change abolishes software-based high-voltage cut-off and mandates an independent physical "one-touch power cut" device. Previously, high-voltage cut-off relied on software signals from the onboard controller. In a severe collision that damages the main control system, that cut-off function could fail — leaving first responders and occupants exposed to live high-voltage circuits.
The new rules require that a driver be able to cut off the vehicle's high-voltage circuit within one second through a single tap or long press. The hardware operates independently of the onboard main control software, drawing power from a separate backup supply. Together, the two standards form a dual-layer protection architecture that breaks away from the fragmented design of the past that relied on a single warning.
Cost pressure reshapes supply chain
Meeting the new rules will raise battery system costs by 15 percent to 20 percent, according to estimates cited by China Auto News from a market research firm. That translates into additional costs of roughly 3,000 to 5,000 yuan ($440 to $735) per battery pack per vehicle.
The impact diverges sharply across the supply chain. Leading battery makers moved early. CATL mass-produced its first generation of no-thermal-propagation battery technology in 2020, meeting the new requirements six years ahead of schedule. Eve Energy's ternary and lithium iron phosphate battery systems already achieved "no fire, no explosion" in 2022, according to Huang Xiaobin, deputy general manager of the commercial vehicle battery product application department.
For large companies that planned ahead, the impact is minimal. But small and medium-sized enterprises and low-end models face greater cost pressure, widening the resilience gap between leaders and smaller players. Liu expects the rules to push companies to systematically rebuild everything from cell materials to battery management system algorithms, squeezing the survival space of those relying solely on assembly or low-quality cells.
The cost increase stems from multiple factors: enhanced thermal barriers between cells, more sophisticated battery management hardware, the physical cut-off device itself, and the validation testing required to certify compliance. Companies that treated safety as a checkbox item now face a complete redesign cycle.
LFP chemistry gains advantage
Thanks to its high intrinsic thermal stability, lithium iron phosphate faces a smaller cost increase in meeting the new rules. Its market share is likely to consolidate further, intensifying the divergence between chemistry routes. The trend aligns with broader market data: Ma Xiaoli, deputy director of China's National Power Battery Innovation Center, said domestic traction battery installation demand should reach 888.7 GWh for full-year 2026, up 15.8 percent year-on-year — a sharp deceleration from 2025's 40.35 percent growth.
Structural divergence is becoming increasingly evident. Commercial NEVs are emerging as the core growth engine, with installation demand expected to rise 34.7 percent in 2026, far outpacing the 10.8 percent growth for passenger vehicles. The commercial segment — buses, trucks, and delivery vans — favors LFP for its cycle life and safety profile, creating a feedback loop that reinforces the chemistry's dominance.
Solid-state and sodium-ion context
The safety standards did not arrive in isolation. On the same day, China's first national standard for automotive solid-state batteries — GB/T 43568-2026 — took effect, defining exact chemical boundaries for what qualifies as solid-state, semi-solid-state, and liquid-electrolyte batteries. The standard classifies batteries by electrolyte weight percentage: all-solid-state at zero percent, semi-solid-state at under five percent, and quasi-solid-state at five to ten percent.
This classification matters because the "no fire, no explosion" mandate applies to all chemistries. Solid-state developers must still prove intrinsic safety, but their solid electrolytes give them a structural advantage. Meanwhile, the Alfen-CATL partnership announced in July to deploy 5 GWh of sodium-ion battery storage in Europe starting in 2027 demonstrates that alternative chemistries are also moving toward commercial validation under the new safety framework.
CATL's Tener Sodium system, designed for a 25-year service life with nearly two percent higher round-trip efficiency than current technology, will need to meet equivalent safety benchmarks for European grid deployment. The convergence of safety regulation across chemistries suggests a maturing industry where safety certification becomes as critical as energy density and cost.
Industry response and international reaction
The standards have triggered immediate responses across the global battery value chain. Samsung SDI and LG Energy Solution, South Korea's two largest battery makers, have both accelerated development of thermal barrier materials and cell-to-pack architectures that eliminate module-level hardware — a design approach that reduces weight but demands even stricter cell-level safety. Panasonic, which supplies Tesla with cylindrical cells from its Nevada and Japan factories, is reportedly evaluating similar physical cut-off mechanisms for its next-generation 4680 production lines.
In Europe, Northvolt's Ett gigafactory in Skellefteå has incorporated the Chinese standards into its validation roadmap for cells destined for European OEMs that also sell in China. A source at the company confirmed that the "no fire, no explosion" threshold is now a design target rather than a stretch goal. Volkswagen's PowerCo division, building factories in Salzgitter, Valencia, and St. Thomas, has mandated that all supplier bids demonstrate compliance with GB 38031-2025 test protocols.
The United States presents a more fragmented picture. While the Inflation Reduction Act's domestic content requirements incentivize local cell production, no federal mandate yet matches China's intrinsic safety standard. The National Highway Traffic Safety Administration updated its battery safety research agenda in March to include thermal propagation testing, but rulemaking timelines typically span years. That gap creates a near-term compliance burden for any US-made cells intended for Chinese-market vehicles.
Global implications
China's standards do not stop at its borders. As the world's largest EV battery producer — CATL, BYD, and other Chinese firms command over 70 percent of global market share — these rules effectively set a new floor for battery safety worldwide. Automakers exporting to China must comply. Competitors in Europe, Korea, and the United States will face pressure to match or exceed the "no fire, no explosion" benchmark.
The European Union's upcoming Battery Regulation, which mandates carbon footprint declarations and due diligence for raw materials, may soon incorporate similar safety performance thresholds. In the United States, the National Highway Traffic Safety Administration has been studying thermal runaway mitigation but has not yet mandated intrinsic "no fire, no explosion" performance.
For the global battery industry, the message is clear: the era of treating thermal runaway as a manageable risk is over. The new baseline is intrinsic, hardware-enforced prevention — and the companies that master it first will define the next decade of EV safety.
The full CnEVPost report on the new standards is available here. For more on how cell chemistry and safety standards shape the battery sector, see our Battery Tech coverage.