Zhiji unveils 900V ultra-fast charging solid-state battery: 1,000km range without fear of low temperatures

Recently, Zhiji Auto announced that it will soon mass-produce the industry's first quasi-900V ultra-fast charging solid-state battery. The official made a detailed analysis of this.

It is reported that solid electrolytes have the characteristics of non-volatile, non-flammable, and high temperature resistance, which can bring multiple advantages to batteries, such as: higher energy density, higher safety, and longer service life. Zhiji solid-state batteries are developed and manufactured by SAIC Qingtao New Energy Technology Co., Ltd., which was jointly established by SAIC Group and Qingtao Energy. In 2024, SAIC Qingtao's first solid-state battery will be mass-produced and will be first installed on Zhiji L6 ( parameters | inquiry ).

On the technical level, one of the highlights of Zhiji's solid-state battery is that it can achieve an ultra-long range of more than 1,000 km, and the battery's energy density and fast charging performance have been greatly improved. Zhiji officials revealed that the Zhiji L6 four-wheel drive version equipped with solid-state batteries has a range of more than 1,000 km. At the same time, the solid-state battery also supports quasi-900V ultra-fast energy replenishment, but the official did not elaborate on the specific energy replenishment speed.

In terms of safety, solid electrolytes will not evaporate or produce dangerous flammable gases under extreme conditions, and are not prone to combustion and explosion. At the same time, they can effectively avoid safety risks such as battery leakage and lithium dendrite puncture. With PSG phase change super material firewalls, aviation-grade thermal insulation aerogels and other safety protections, Zhiji solid-state battery packs can achieve no heat spread and no fire.

It is reported that Zhiji solid-state batteries also have excellent low-temperature performance. The viscosity of liquid battery electrolytes increases significantly at low temperatures, and the migration speed of lithium ions decreases significantly, so the performance is poor in winter. In contrast, the conductivity of solid electrolytes will also decrease at low temperatures, but the impact of temperature is small. Even at -30°C, the discharge capacity retention rate can reach more than 90%, and the low-temperature endurance is better, which is more practical for users in cold northern regions.