TrendForce has released its latest report, “Analysis of EEA Architecture and ADAS Domain Controllers in New Energy Vehicles,” providing a detailed analysis of the evolution of electronic and electrical architectures in new energy vehicles and the current status of ADAS domain controllers. Excerpts from the report are as follows.

TrendForce’s Insights:

1. BEV Platform: the Ideal Carrier for High Integration EEA Development

In recent years, various automakers have been investing resources to enhance the competitiveness of their new energy vehicles, particularly Battery Electric Vehicles (BEVs), by developing BEV platforms.

With the complete elimination of internal combustion engines, BEVs exhibit a higher degree of electrification compared to other powertrain modes, facilitating the design of high-computing power and highly integrated Electrical/Electronic Architecture (EEA).

Furthermore, startup automakers unburdened by traditional internal combustion engine constraints currently lead in the integration of EEA architectures compared to traditional automakers.

2. Domain Controllers are Parts of the Key Components for the Development of Highly Integrated EEA

Currently, domain controllers with varying computational power are widely distributed in the market.

However, electric vehicles equipped with high-performance domain controllers still have prices significantly higher than the average, and given the limited economic scale of new entrants, sustained cost reduction requires continuous investment from more manufacturers and improvement in usage environment.

3. The Economic Scale of BEVs Will be the Main Hurdle for EEA Development

While BEVs are considered the optimal platform for developing highly integrated EEAs, the challenges of range anxiety and high vehicle prices continue to be significant barriers affecting the sustained growth of the market.

This has led to a recent slowdown in BEV demand, prompting automakers to redirect some of their development resources to PHEV and even HEV models. These vehicle types may not necessarily require or be suitable for high-performance chips.

Therefore, if PHEVs and HEVs continue to grow, they could become key factors affecting the economies of scale and widespread adoption of high-performance chips.

Since the 1980s, Toyota collaborated with Denso to conduct research on SiC. In 2014, SiC inverters were installed in Toyota’s Prius and Camry hybrid electric vehicles (HEVs) for driving and on-road testing, confirming a 5-10% improvement in energy efficiency. After this successful testing, Toyota adopted SiC in its hydrogen fuel cell buses that were put into formal operation in 2015 and 2018. At that time, the cost of SiC chips was higher than it is now, so Toyota continued to primarily use Si-IGBT inverters in its hybrid vehicle models.

Model 3 SiC Inverter Sparks Toyota’s Concerns About Electrification

In 2017, the Model 3, equipped with SiC inverters, became the best-selling battery electric vehicle (BEV) on the market due to its high performance and long range. It also contributed to the surge of new BEV sales, which exceeded 1.2 million vehicles in 2018. Since then, many automakers have targeted SiC as the basis for next-generation BEV drivetrain systems, while Toyota continued to adhere to its hybrid electric vehicle (HEV) and hydrogen fuel cell vehicle (FCV) strategies. According to TrendForce, the total new sales of PHEVs and BEVs is estimated to reach approximately 10.63 million vehicles in 2022, while Toyota’s sales in this sub-market are only close to 100,000, accounting for about 1% of the market share, far behind BYD’s 19% and Tesla’s 15%.

In the current EV industry, BEVs and PHEVs have become the mainstream, while HEVs may gradually shrink in the future market. Pressures from the changing market have forced Toyota, which has not fully focused on BEVs and PHEVs in the past, to rethink its overall electrification strategy and accelerate the production capacity and technological layout of key components, such as SiC.

Toyota aims to sell 3.5 million electric vehicles by 2030, and has demonstrated its commitment to electrification through the establishment of a SiC wafer manufacturing technology research company. SiC chips have the potential to improve energy efficiency in electric vehicles, but their high cost is currently a challenge due to low SiC wafer yields in the manufacturing process. QureDA Research’s Dynamic AGE-ing technology could help improve wafer yields and lower chip costs. If successful, this technology, combined with Toyota’s market presence, could enhance the competitiveness of Toyota’s electric vehicles and give them a chance to compete for a leading position in the future electric vehicle market.

（Image credit: Toyota LinkedIn）