Recently, at the "2021 GAC Technology Day Conference," GAC Group released its "Neutron Star Strategy" for power battery technology: GAC Group will deeply engage in the independent research and development and industrial application of power batteries and cells, ushering in the era of "low-carbon new powertrains." The "Neutron Star Strategy" will advance technology from three aspects: cells, BMS (Battery Management System), and battery packs.
At the press conference, GAC Group launched its independently developed "sponge silicon anode battery technology" (referred to as "sponge battery").
It is understood that the technology includes "nanocomposite silicon technology", "self-healing adhesive technology" and "gradient composite coating technology", which makes the silicon anode sheet inside the battery as soft and elastic as a sponge, thus limiting and buffering the expansion and contraction of silicon during charging and discharging, preventing it from breaking.
Meanwhile, the "sponge battery" also allows the silicon anode to leverage its large capacity, storing more energy, much like a sponge absorbs water. This technology can reduce the volume of a single lithium-ion battery cell by 20% and its weight by 14%; future plans aim to further reduce both volume and weight by more than half.
This technology also has a significant effect on extending battery life and improving the reliability of lithium-ion batteries.
GAC Group stated that, according to national standard operating conditions, the GAC AION LX, equipped with sponge silicon anode battery technology, can achieve a range of over 1000km after range testing by an authoritative third-party testing agency. Furthermore, the vehicle has undergone high-temperature and high-cold-weather testing in both summer and winter, demonstrating excellent performance, strong power, and reliable safety.
