Chinese manufacturer Gotion High-Tech has announced that it will begin mass production of its new Astroinno L600 LMFP battery pack in 2024. The company claims that the battery pack can last for up to 2 million km and deliver a range of 1,000 km per charge. At room temperature, it can complete up to 4,000 full cycles, while at high temperature, it can achieve up to 1,500 cycles of 18-minute fast charging.
The battery cell has a weight energy density of 240Wh/kg, and a volume energy density of 525Wh/L. According to the company’s executive president Dr. Cheng Qian, this performance was achieved through a combination of innovations in the battery material system as well as the pack design. “The the volumetric cell to pack ratio has reached 76% after adopting the L600 cell, and the system energy density has reached 190Wh/kg, surpassing the pack energy density of current mass-produced NCM (nickel cobalt manganese) cells. In recent years, lithium iron phosphate (LFP) technology has regained the recognition of the market with market share continuing to increase. Meanwhile, the energy density growth of mass-produced LFP batteries has encountered bottlenecks, and further improvement requires an upgrade of the chemical system, so manganese doped as called lithium iron manganese phosphate (LMFP) was developed.”
The breakthrough that Gotion High-Tech achieved through its new battery pack is the incredibly high cycle number, which means that the battery could essentially last 2 million km before it starts to deteriorate. While the average Australian car travels around 15,000 km per year, it would take 130 years worth of driving for an average driver to reach the 2 million km mark. The battery pack’s longevity opens up new possibilities for ride-sharing and Transportation as a Service (Taas). According to technology researcher Tony Seba, who was recently interviewed on The Driven podcast, “The day that we get level four, autonomous technology ready and approved by regulators, when that converges with on-demand, and electric transportation we will get what we call transportation as a service. When that happens the cost per mile of transportation is going to drop by anywhere from 10 to 20 times. So even if gasoline automakers gave away their cars, that’s still gonna be a lot more expensive than the cost of transport as a service.”
Gotion High-Tech’s new battery pack not only achieves breakthroughs in the battery material system but also in the pack design. The Astroinno battery pack has a sandwich-structure double-sided liquid cooling technology that, coupled with the minimalist design approach, reduces the number of structural parts of the battery pack by 45% and lowers the weight of structural parts by 32%. According to Dr. Cheng, the company’s minimalist electrical design enabled the length of the battery pack wiring harness to drop from 303 meters to 80 meters.
To achieve the battery pack’s impressive features, the Chinese company spent 10 years on in-house research and development. Gotion High-Tech credited its global R&D efforts for the new technology, and its research institution in Cleveland, Ohio developed a new electrolyte for LMFP that improved the cycle and storage performance at high temperatures. “Gotion High-Tech has solved the challenges of Mn dissolution at high temperatures, low conductivity, and low compaction density through utilising co-precipitation doping encapsulation technology, new granulation technology and new electrolyte additives,” said Dr. Cheng.
Gotion High-Tech’s new battery pack presents a significant milestone in the journey towards electrification and the transition towards autonomous electric vehicles. With the convergence of on-demand transport services, electric vehicles, and autonomy, the cost per mile of transportation is likely to drop considerably. Tony Seba predicted that such a technological breakthrough could cause the global automotive market to drop by 75% by 2030.