Gotion High-Tech astroinno L600 LMFP cell
In recent years, the market share of lithium iron phosphate has increased significantly, and the market’s enthusiasm for it has repeatedly increased.
However, in the high-end automobile market, ternary batteries are still the home field. The main reason is that the energy density of lithium iron phosphate batteries is lower than that of ternary batteries, and the cruising range cannot meet the needs of high-end cars.
And so far, the energy density growth of lithium iron phosphate batteries has entered a bottleneck.
As an upgraded version of lithium iron phosphate, lithium manganese iron phosphate is becoming a new investment direction for the power battery track. This article will introduce Gotion High-Tech latest cell – astroinno L600 LMFP cell.
Gotion High-Tech introduction
In recent years, Gotion High-Tech has carried out chain extension, supplementary chain, and strong chain, and established a forward-looking vertical layout of the entire industrial chain from the mineral resource end, the material end, to the battery product end.
At present, the layout of Gotion High-Tech’s upstream materials has covered most of the raw materials for lithium battery production, such as lithium, cobalt, nickel, precursors, ternary materials, LFP materials, lithium carbonate, negative electrodes, copper foil, separators, electrolytes, and additives.
In terms of battery technology, as one of the members of the top 10 lithium iron phosphate power battery manufacturers in China, Gotion High-Tech currently has a mass production capacity of 230Wh/kg energy density lithium iron phosphate batteries.
Its high-safety semi-solid battery has a single energy density of 360Wh/kg. The battery pack of the supporting model has a capacity of 160KWh, and the cruising range exceeds 1000km.
Astroinno L600 LMFP cell introduction
Recently, Gotion High-Tech released the self-developed L600 astroinno battery cell and battery pack with a new LFMP system. The chemical composition of the battery pack is lithium iron phosphate doped with “manganese”.
According to reports, the astroinno L600 LMFP battery achieves a mass energy density of 240Wh/kg, a volumetric energy density of 525Wh/L, 4000 cycles at room temperature and 1800 cycles at high temperature.
It can easily achieve fast charging in 18 minutes. After adopting L600 batteries, the volume grouping rate reaches 76%, surpassing the pack energy density of the current mass-produced ternary system, and the system energy density reaches 190Wh/kg.
This LMFP astroinno battery has a battery life of up to 1,000 kilometers and is scheduled to start mass production in 2024.
The uniqueness of astroinno L600 LMFP cell
In terms of material system, astroinno battery adopts LMFP material and electrolyte developed by Gotion High-Tech.
According to reports, after ten years of self-developed lithium manganese iron phosphate (LMFP) materials, the company has solved the problems of high-temperature Mn dissolution, low conductivity, and pressure problems through co-precipitation synthesis technology, advanced doping coating technology and new granulation technology.
On the other hand, the company’s Cleveland Research Institute in Ohio, USA has developed a new electrolyte for LMFP, which greatly improves high-temperature cycle and storage performance.
In addition to the new upgrade and innovation of the battery material system, the astroinno battery pack based on the astroinno L600 battery cell also has a number of technological breakthroughs and innovations.
The astroinno battery pack adopts the double-sided liquid cooling technology of sandwich structure, which reduces the number of structural parts of the battery pack by 45% and the weight of structural parts by 32%.
At the same time, the minimalist electrical design idea makes the length of the battery pack’s wiring harness only 26% of the previous one, from the original 303m wiring harness to 80m, but the volume group efficiency has reached 76%, and the pack energy density has reached 190Wh/ kg, surpassing the energy density of ternary lithium battery currently on the market.
In terms of the intrinsic safety of the battery, the heat insulation material independently developed by astroinno battery pack can withstand high temperatures of 1200°C, which is equivalent to wearing a layer of heat insulation skin on the battery cell, and through the rapid heat dissipation channel and the active and safe BMS in extreme conditions , to achieve four layers of ultimate security protection.
At present, the product has passed all battery tests of acupuncture, hot box, overcharge, overdischarge, thermal runaway, extrusion and short circuit of the new national standard.
The future possibility of LMFP
From the perspective of the future development direction of the industry, mileage anxiety has always been a major obstacle to the development of electric vehicles, and the key to solving this problem is to increase the energy density of power batteries.
However, resources are not inexhaustible, and there is actually a gap in the supply of upstream raw materials for power batteries, which has triggered an increase in the price of upstream materials for power batteries.
Lithium iron manganese phosphate is a new type of positive electrode material obtained by adding some manganese on the basis of lithium iron phosphate.
Compared with lithium iron phosphate, lithium manganese iron phosphate not only retains the safety and low-cost characteristics of lithium iron phosphate batteries, but also has a higher voltage platform, and its energy density is about 15% higher than that of the latter.
Although the lithium manganese iron phosphate material has disadvantages such as low electrical conductivity and poor cycle performance, it still has important development potential as the technology iterates and matures.
After all, with the increasing demand for power batteries, the future power battery market will become more and more diversified, which will also provide more development opportunities for new materials such as lithium manganese iron phosphate.
Therefore, from the perspective of the future market, lithium manganese iron phosphate can be said to be a positive electrode material with broad prospects, and its application in the field of power batteries will become more and more extensive.