In an indication of battery security expertise, Geely‘s Galaxy E5 electrical automobile has accomplished an excessive compression take a look at the place its “Aegis Gold Brick Battery” withstood the crushing weight of a 36-ton ZTZ-59D medium tank. The strain utilized throughout this take a look at was roughly 1.8 instances increased than what’s required by China’s new nationwide battery security requirements, with no indicators of fireplace, explosion, or thermal runaway noticed in both the battery pack or particular person cells.
The take a look at simulated a state of affairs the place a automobile’s battery undergoes excessive exterior affect and compression. The 36-ton tank repeatedly drove over the battery pack with its tracks, then crushing particular person battery cells and a gaggle of ten cells. Regardless of this excessive strain, the battery pack maintained its structural integrity with no bulging, leakage, fireplace, or explosion. Skilled inspection confirmed that the battery endured compression forces exceeding the brand new nationwide customary necessities.
New nationwide battery security requirements
On March 28, China’s Ministry of Business and Data Expertise introduced new security necessities for electrical automobile energy batteries (GB38031-2025), which might be carried out beginning July 1, 2026. These up to date requirements introduce three core security enhancements:
- New security testing after fast-charging cycles
- Enhanced thermal runaway safety necessities
- First-ever backside affect testing
Geely’s Aegis Gold Brick Battery system has already handed these new requirements, changing into one of many first battery manufacturers within the {industry} to obtain full certification.
The Aegis Gold Brick Battery includes a quick size, elevated thickness, low inside resistance, and minimal warmth era. It employs high-quality supplies, together with a extra versatile wet-process dual-coated separator with an aluminium oxide heat-resistant coating, which prevents cell rupture and thermal runaway when punctured.
The battery pack boasts industry-leading IP68 and IPX9K safety scores, CTB (Cell To Physique) integration expertise, grid constructions with 4 energy-absorbing cross-sections, and a 2.6mm thick “sandwich” construction backside plate. The battery design incorporates liquid-electric separation, electrical isolation, warmth dissipation, and a number of protecting measures to boost security.
Exceeding security requirements
Whereas the brand new nationwide requirements require 24 security exams, Geely topics its Aegis Gold Brick Battery to 36 excessive eventualities, with 23 exams exceeding nationwide necessities. Geely has additionally proactively carried out the brand new “backside affect” take a look at in its company requirements and plans to open its battery security patent portfolio to the whole {industry}.
The Galaxy E5 has beforehand achieved wonderful leads to excessive high-temperature exams and complete security trials carried out by the China Automotive Expertise and Analysis Middle (CATARC). It has earned NESTA six-dimensional electrical security certification and five-star security scores from Euro NCAP and ANCAP.
Geely Galaxy autos have accrued almost a million gross sales with zero spontaneous combustion incidents, demonstrating the effectiveness of their security applied sciences. Later this yr, it plans to open its International Complete Security Take a look at Middle—the world’s largest single security take a look at laboratory—to the {industry}.
