BYD chief scientist expects solid-state batteries to be widely used in 5 years' time

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Widespread use of solid-state batteries may be difficult to see in the next 3 years, but it's expected to be realized in 5 years, BYD chief scientist Lian Yubo said in a speech at the 2024 World New Energy Vehicle Congress (WNEVC 2024) in Haikou, Hainan province.

Solid-state batteries will likely be used only in high-end models initially, and then gradually in mid-to-low end and budget models, Lian said, according to a video of his speech seen by CnEVPost.

In the field of solid-state batteries, BYD is doing in-depth research, he said.

Currently, the solid-state battery field faces challenges including high costs, complex manufacturing processes and difficult integration with vehicles, Lian said.

Solid-state batteries started to get wide attention in China after Nio announced a 150-kWh semisolid battery when it unveiled its ET7 sedan at the Jan 9, 2021 Nio Day 2020 event.

Nio's semi-solid-state battery pack began trial operations in May of this year after several delays, and became officially operational on a daily rental basis in Jun.

The semi-solid battery's cells come from local startup Beijing WeLion New Energy Technology and have an energy density of 360 Wh/kg.

Because it's new technology, the 150-kWh battery pack is currently costly, with Nio co-founder and president Qin Lihong mentioning in Feb 2023 that the pack costs about the same as an ET5, Nio brand's least expensive model to date that has a starting price of RMB 298,000 (USD42,480) including the battery.

Lian's speech was the first time in the past few years that a BYD executive has spoken publicly about solid-state batteries.

On Apr 28, Wu Kai, chief scientist at CATL, the world's largest maker of power batteries, said at the China International Battery Fair (CIBF) 2024 event that the company aimed to produce all-solid-state batteries in small batches by 2027, but that high-volume production would still face problems including cost.

BYD is the world's second-largest power battery maker, with a 16.1% share and 69.9 GWh of installed capacity in Jan-July, according to data released on Sep 4 by South Korean market researcher SNE Research.

CATL continued to be the world's No. 1 in the global market with 163.3 GWh of installed capacity and a 37.6 % share in the same period.

BYD, which currently produces mainly lithium iron phosphate (LFP) power batteries, had a 33.53% share of China's LFP battery market in Aug, second only to CATL's 36.61 percent, according to the China Automotive Battery Innovation Alliance (CABIA).

The company's share of China's ternary battery market was only 0.34% in Aug, ranking 10th.

In China's EV battery market, LFP batteries have dominated, with 35 GWh installed in Aug, accounting for 74.2% of the total, according to CABIA.

China's lithium ternary battery installed volume in Aug was 12.1 GWh, accounting for 25.7% of the total installed volume.

LFP batteries have been in development for more than 20 years, and already have a stable manufacturing process, a rich supply chain, and cost efficiencies, Lian said in today's speech, adding that LFP batteries will actually contribute to the research and production of solid-state batteries as well.

He doesn't think LFP batteries will be obsolete in the next 15, or even 20 years, and will be developed alongside solid-state batteries for use in different classes of vehicles.

BYD chief scientist expects solid-state batteries to be widely used in 5 years' time

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Money Thrill : I know a lot about Solid-state battery [The most advanced in world] made by Imec Research Laboratory Belgium (5500 sophisticated engineers) perhaps for BYD. i cannot put photos here so it shall be for a comment next week. They have already the nanochips only for 2039 in great production for companies( ?) worldwide secretly

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