Core Viewpoint - BYD's upcoming "Technology Day" event is expected to be a catalyst for its stock price, with significant technology upgrades anticipated in five key areas [1] Investment Logic - BYD is a leading player in the global electric vehicle market, with strong development advantages in both domestic and international markets. The company is expected to see 92% of its sales growth from overseas markets between 2024 and 2028, with profit contributions from overseas rising from 21% in 2024 to 76% in 2028 [2] - The company's total vehicle sales are projected to grow from 4.3 million in 2024 to 7.1 million by 2030, supported by a robust product matrix and strong R&D capabilities [2] - Current A/H share prices are below historical average forward P/E ratios, making the stock attractive for investment, with target prices set at 137 CNY for A-shares and 134 HKD for H-shares [2] Potential Core Technology Upgrades - **Battery and Charging Technology/Charging Network** - Next-generation blade batteries are expected to enhance energy density and charging speed through a 1000V high-voltage charging platform [3] - New battery energy density is anticipated to exceed the current 200 Wh/kg, with potential references to a 360 Wh/kg solid-state battery prototype expected in 2026 [3] - The Z9 and Z9GT models are set to feature a 122.5 kWh battery pack, enabling a pure electric range exceeding 1000 km [3] - **DM-i 6.0 Super Hybrid Platform** - The new platform will utilize a 900V high-voltage architecture, improving engine thermal efficiency to approximately 48% and reducing fuel consumption to 1.8-2.79 L/100 km [7] - **Tian Shen Eye 5.0 Advanced Intelligent Driving System** - This system will leverage end-to-end large models and reinforcement learning for self-evolving driving capabilities, enhancing emergency braking performance and expanding high-level driving functions to more vehicle segments [8] - **Yun Nian Intelligent Chassis** - The 2.0 version of the Yun Nian chassis will improve off-road capabilities and adaptability, with plans to implement this system in models priced between 100,000 to 150,000 CNY by 2026 [9] - **Potential New Model Releases** - BYD has six new models in preparation, including the Datang, Tengshi Z9GT, and the pure electric versions of the Haibao and Qin MAX [10] Industry Peer Comparison - **Charging Speed** - Competitors like Geely and Xpeng have developed fast-charging batteries capable of charging from 10%-20% to 80% in about 10 minutes, with several companies already implementing 800V-1000V high-voltage charging platforms [4] - **Energy Density** - Current fast-charging models typically feature batteries with energy densities ranging from 205 Wh/kg to 255 Wh/kg, with CATL's Shenxing 4C battery and Kirin 5C battery leading in this area [5] - **Battery Capacity** - Mainstream domestic automakers have battery pack capacities between 62-100 kWh, providing electric ranges of 500-740 km [5] Key Investor Concerns - Investors are expected to focus on the specific parameters of the new battery and charging technologies, the potential competitive advantages these technologies may provide, the company's long-term plans for charging station infrastructure, and the pricing tiers at which fast-charging technology will be available in the mass market [6]