According to BYD’s Battery Business CTO, large-scale adoption of all solid state batteries may not occur until after 2030. After a certain level of use, he said the cost of a solid state ternary battery would theoretically reach a level comparable to a liquid ternary battery.
BYD (HKG: 1211, OTCMKTS: BYDDY) is hoping to begin “using demonstrations” all solid batteries around 2027.
According to video replays seen by CnevPost, Sun may not be able to achieve true, large-scale adoption of all solid-state batteries on all solid-state batteries from 2030 onwards.
Looking at the industry as a whole, various players are making similar advancements, Sun added.
BYD is the world’s largest manufacturer of new energy vehicles (NEVs) and the second largest power battery manufacturer.
In 2024, the BYD power battery was installed at 153.7 GWH, with a global market share of 17.2% behind CATL (SHE: 300750) 37.9%.
In April 2024, CATL’s chief scientist Wukai told a battery industry event that the company aims to produce all solid state batteries in small quantities in 2027, but mass production volumes were He said he will still face issues including costs.
Liquid lithium batteries can reach energy density of 350 WH/kg, but it is difficult to continue improving, but all solid state batteries are expected to reach energy density of 500 WH/kg, and Wu said at the time.
Last November, local media LatePost reported that CATL, which focused on the sulfide pathways of all solid-state batteries, has entered the test production phase of 20 AH samples.
In today’s speech, Sun said that BYD’s material selection for solid state batteries is also based primarily on sulfide electrolytes from cost and process stability considerations.
The other two main technical routes for all-solid state batteries are the oxide pathway and the polymer pathway. Last April, a new energy from a Chinese solid battery startup talent who chose the oxide pathway said it had successfully created a solid battery cell with an energy density of 720 WH/kg.
BYD began research and development on batteries in all solid states in 2013, when he was primarily exploring the routes and materials of technology, Sun said.
By 2016, BYD began verifying the technical feasibility of all solid state batteries, and the prototype at the time was mainly soft pack batteries with very few capacity less than 1 AH, and Sun said he He said in his speech.
By 2023, BYD had begun to verify the feasibility of all solid batteries, materials, design and industrialization of various technologies, according to Sun.
By 2024, BYD has already seen test products of solid battery cells with a single cell capacity of 20 AH and 60 AH roll off the production line, according to Sun.
He believes the cost of solid-state batteries will not be an issue in the long run.
According to Sun, the biggest impact of nickel and cobalt is primarily nickel and cobalt in the sulfide pathway of solid-state batteries.
The reason why sulfide electrolytes are so high now is mainly because of their very low volume, San said. “Without volume, it doesn’t make much sense to talk about costs.”
After a certain level of use, the cost of a solid-state ternary battery is theoretically at a level comparable to that of a liquid component battery, Sun said.
BYD’s chief scientist hopes solid state batteries will be widely used in five years
