In a demonstration of battery safety technology, the electric vehicle Geely EX5 successfully passed an extreme compression test, where its battery withstood the crushing weight of a 36-ton ZTZ-59D medium tank without any fire, explosion, or thermal runaway—either in the battery pack or in individual battery cells.
The pressure applied during this test was approximately 1.8 times higher than the level required by China’s new national battery safety standards, yet no signs of danger were observed. The test simulated a scenario in which the vehicle’s battery was subjected to severe external impacts and pressure. The tank repeatedly ran over the battery pack and crushed individual cells and a group of ten cells.
Despite such extreme pressure, the battery pack maintained its structural integrity without any bulging, leakage, fire, or explosion. A professional inspection confirmed that the battery endured compression forces exceeding the new national standard requirements.
China’s New National Battery Safety Standards
On March 28, China’s Ministry of Industry and Information Technology announced new safety regulations for electric vehicle batteries, which will come into effect on July 1, 2026. These updated standards introduce three major safety improvements:
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Safety testing after multiple fast-charging cycles
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Stricter requirements for thermal runaway protection
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The first-ever bottom impact test
Geely’s Aegis Gold Brick battery has already passed all of these new standards, becoming one of the first certified battery brands in the industry.
Features of the Aegis Gold Brick Battery
This battery model features a shorter length, increased thickness, low internal resistance, and minimal heat generation, using high-quality materials. The battery pack also boasts advanced protection systems, including:
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IP68 and IPX9K water and dust resistance
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CTB (Cell To Body) integration technology
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Grid structure with four impact-absorbing zones
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A 2.6mm thick “sandwich” bottom plate structure
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Systems for liquid-electric separation, electrical isolation, heat dissipation, and multi-layer safety measures
Even though the new national standards require 24 safety tests, Geely subjects the Aegis Gold Brick Battery to 36 extreme scenarios, with 23 tests exceeding national requirements. Geely has also included the new bottom impact test in its own corporate standards and plans to open its battery safety patents to the entire industry.
Source: CarNewsChina
