en.Wedoany.com Reported - Before the official implementation of China's "Safety Requirements for Traction Batteries for Electric Vehicles" (GB38031-2025) on July 1, 2026, Yutong Heavy Industries, in collaboration with CATL, has had all its main models certified under the new national standard, with some indicators exceeding the standard requirements by multiple times.

The new national standard shifts the battery safety evaluation logic from "buying escape time" to "actively preventing accidents," requiring that after a single cell thermal runaway, the battery pack or system must not catch fire or explode for at least 2 hours, the temperature at monitoring points must not exceed 60°C, and the vehicle must issue a warning within 5 minutes. It also adds a 150J steel ball bottom impact test, mandates passing an external short circuit test after 300 fast charge cycles, and includes verification under full operating conditions such as high and low temperatures, long-term vibration, water wading, heavy-duty cycling, and plateau environments.

Yutong Heavy Industries surpasses the national standard in 13 indicators. In terms of bottom impact protection, taking the Yutong electric rotary drilling rig as an example, it uses a battery intrusion prevention structure with 300J bottom impact and manhole cover extrusion protection design, with impact energy twice the national standard. The waterproof rating reaches IP68+IP6K9K, withstanding 72 hours of immersion in 2 meters of water without damage, 144 times the national standard immersion duration. The mining truck battery enclosure withstands immersion in a 5% salt solution for 24 days without abnormality, far exceeding the national standard requirement of 6 days. The heavy-duty battery undergoes 10 weeks of high and low temperature cyclic salt spray testing plus 480 hours of copper-accelerated acetic acid salt spray testing, outperforming the industry's highest 1000-hour neutral salt spray standard.

In terms of structural strength, the mining truck battery uses 6-series aluminum alloy extruded profiles paired with a BC5 high-strength enclosure design, achieving vibration resistance 16 times the national standard GB/T 31467.3, passing combined tests of high and low temperature cycling, high humidity, and vibration. The heavy-duty battery high-voltage connector withstands 200kN extrusion without combustion or explosion, with extrusion force twice the industry standard. In terms of fast charging safety, Yutong mining trucks use long-life battery cells with a charge-discharge cycle life of up to 4500 cycles. For all-climate adaptability, Yutong mining trucks have been field-verified at the Xianglong Copper Mine in Tibet at an altitude of 5,500 meters, while Yutong sanitation pure electric vehicles operate for 2 to 3 days on a single charge in Shigatse at an altitude of 4,000 meters. Facing severe cold of minus 30 degrees Celsius in northern China, the self-developed liquid heating technology enables the vehicle to reach optimal charging status upon unlocking.

Yutong began its involvement in the electric commercial vehicle sector in the 1990s and has received the National Science and Technology Progress Award four times. Its participation in the "Key Technologies for Power Battery R&D and Manufacturing for Large-Scale Industrialization" Key Technologies won the second prize of the 2023 National Science and Technology Progress Award. Yutong and CATL jointly develop new materials and systems, create exclusive cell solutions, and possess complete independent R&D capabilities from battery systems to motors and electronic controls.

The implementation of the new national standard will eliminate low-end homogeneous products and further drive deep cultivation in core technology areas such as materials, thermal management, and intelligent monitoring within the new energy equipment industry chain.

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