Hello, Secretary Dong, BYD is the first domestic automaker to get involved in plug-in hybrid technology, and has accumulated more than ten years of plug-in hybrid technology. I personally have great confidence in BYD's technology. I saw several pictures of BYD's evaporative emission patents on the Internet, and I want to know more about what technologies the company has accumulated for evaporative emissions? What about related patents? Please answer!

2024-12-27 22:29
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BYD: Hello investors, BYD adheres to the concept of "technology is king, innovation is the basis". As of the end of 2022, the company has applied for more than 40,000 patents and authorized 28,000 patents. It can be said that technological innovation has penetrated into the company's genes. As you said, BYD has accumulated many years of PHEV plug-in hybrid technology. BYD PHEV plug-in hybrid has undergone four generations of power system optimization and upgrades since 2005. The third-generation power system is based on the fuel vehicle platform design, which cannot realize the decoupling of the engine and the wheel (disconnection), and the engine cannot be flexibly started in EV mode for carbon canister desorption (extracting oil and gas in the carbon canister), so we also used a high-pressure fuel tank at the time to meet regulatory requirements. In 2020, BYD launched the fourth-generation plug-in hybrid solution, which is a new design based on the electric vehicle platform. It adopts a dual-motor series-parallel power architecture, realizes the decoupling of the engine and the wheel, and can flexibly start the engine for efficient desorption, so the use of a normal pressure fuel tank can also meet regulatory requirements. BYD has applied for a number of technical patents related to steam emissions in the past decade. The combination of BYD PHEV's dual-motor series-parallel power architecture and the evaporative emission system of the atmospheric pressure tank is a new thing. We have accumulated a wealth of software and hardware solutions for the fuel evaporation system. In order to further promote the development of PHEV, BYD is willing to share the control strategies and principles of our core technologies, as well as patent results, with all automotive peers for free, and accept analysis and discussion from industry experts. Thank you for your attention and support! BYD will also make unremitting efforts, work with like-minded partners, take technology as the anchor, take consumer demands as the core, and continue to work hard to make due contributions to the development of China's new energy vehicles and even global new energy.