Core Viewpoint - The focus of battery companies is shifting towards enhancing the charging experience for electric vehicles, particularly in the "last mile" of charging, which involves reducing the time taken to charge from 80% to 100% [2][5] Group 1: Technological Advancements - Battery companies are improving charging efficiency, with Jiayao Tongxing's new technology reducing the time to charge from 80% to 100% to 11.5 minutes, a 75% improvement over conventional batteries [2] - Honeycomb Energy has optimized its 4C fast charging project to achieve a full charge in 15 minutes, with the time from 80% to 100% reduced to 5 minutes, marking a 30% enhancement [3] - BYD has introduced the end-fast charging technology in its e-platform 3.0 Evo, indicating a trend towards faster charging solutions [4] Group 2: Charging Curve Optimization - The optimization of the constant voltage (CV) phase in traditional charging methods is crucial, as it significantly slows down charging speed to protect the battery [5] - Data from Xiaomi's SU7 Pro shows a dramatic decrease in charging power as the battery approaches full capacity, with reductions of up to 92% at 95% SOC [5] Group 3: Different Approaches to Fast Charging - BYD employs pulse charging to reduce battery polarization and increase end charging current, potentially including negative pulse currents to alleviate lithium ion accumulation [6] - Honeycomb Energy enhances charging capacity through a stacking process and utilizes a dual temperature control monitoring system for efficient end charging [6] - Many companies proposing end-fast charging solutions are those producing blade batteries, likely due to the improved thermal performance of the stacking process [7]

Core Trends in Battery Technology - The 17th Shenzhen International Battery Technology Exchange Conference/Exhibition (CIBF2025) highlighted five core trends in battery technology driven by carbon neutrality goals: solid-state battery industrialization, breakthroughs in extreme fast charging, diversification of cylindrical battery applications, mass production of large energy storage cells, and commercialization of sodium batteries [1][16]. Solid-State Batteries - Solid-state batteries are emerging as the core direction for next-generation battery technology, offering high energy density, intrinsic safety, and wide temperature performance. They can achieve theoretical energy densities 2-3 times that of traditional liquid batteries [1][3]. - Companies like CATL are developing semi-solid state batteries with energy densities up to 500Wh/kg and are collaborating on electric passenger aircraft projects [3]. - BYD plans to start mass production of solid-state batteries by 2027 and aims for large-scale production by 2030 [3]. - Guoxuan High-Tech showcased its G-variant semi-solid state battery with energy densities exceeding 300Wh/kg, demonstrating significant safety improvements [3]. Extreme Fast Charging - The rise of electric vehicle penetration has shifted user concerns from range anxiety to charging efficiency, making extreme fast charging (XFC) a focal point at CIBF2025. Companies are introducing 6C high-rate batteries to match the refueling speed of gasoline vehicles [4][7]. - Xinwanda presented the world's first 1400A flash charging battery, capable of charging over 150 kilometers in just one minute [7]. - Hive Energy introduced a second-generation battery with rapid charging capabilities, achieving 20% to 80% SOC in just 12.1 minutes [7]. Diversification of Cylindrical Batteries - The cylindrical battery sector is expanding from electric vehicles to various applications, including electric two-wheelers and small power devices. The standardization and customization of cylindrical batteries are seen as key to reducing costs [1][9]. - BYD showcased a cylindrical battery designed for electric two-wheelers, emphasizing long service life and high cycle performance [9]. - Sodium-ion batteries are gaining traction for their resource abundance and safety, with applications expected in small power devices and energy storage [10][15]. Large Energy Storage Cells - The energy storage sector is moving towards "600Ah+" cells, with a focus on enhancing energy density and cycle life while reducing costs [10][12]. - Companies like Ruipu Lanjun and Xinwanda are presenting large capacity storage cells with energy densities around 430Wh/L and cycle lives exceeding 10,000 cycles [12][13]. - The trend emphasizes the need for high energy density, long cycle life, and safety in energy storage solutions [10]. Sodium Battery Commercialization - Sodium batteries are advancing towards industrial applications, particularly in small power devices and energy storage, addressing the limitations of lithium batteries [10][15]. - CATL is developing sodium-based batteries for commercial vehicles, with plans for mass production in mid-2025 [15]. - The sodium battery technology is expected to alleviate reliance on lithium resources while providing high power characteristics [10][15].

Core Viewpoint - The article discusses the advancements in battery technology, particularly focusing on sodium-ion and solid-state batteries, highlighting the increasing penetration of electric vehicles and the corresponding growth in battery installation capacity by 2025 [2][4]. Group 1: Industry Trends - By 2025, the penetration rate of new energy vehicles is expected to exceed 60%, leading to a rapid increase in battery installation capacity [2]. - In Q1 2025, global sales of new energy vehicles reached 3.938 million units, a year-on-year increase of 29%, driving the installation of power batteries to 206.9 GWh, a 36% increase year-on-year [2]. - Phosphate iron lithium batteries accounted for 106.6 GWh of the installation volume, representing 51.5% of the global market share [2]. Group 2: Technological Innovations - The article highlights the competitive landscape of battery technologies, including large cylindrical, ultra-fast charging, and solid-state batteries, with a significant expansion in downstream application scenarios [2]. - Honeycomb Energy recently showcased its second-generation Long Scale Armor battery and the latest stacking technology, emphasizing the evolution of battery technology towards ultra-fast charging and solid-state solutions [3][4]. - The second-generation Long Scale Armor battery is set to begin mass production in mid-June 2025, featuring enhanced safety, energy density, and fast-charging capabilities [6][7]. Group 3: Product Features - The second-generation Long Scale Armor battery boasts a system energy density of 185 kWh/kg and a fast-charging cycle exceeding 1600 cycles, with a range of over 400 km [7][9]. - The battery package utilizes CTP design, improving volume utilization by 2-4%, and incorporates BDU cooling technology, reducing temperature by 40% [7][9]. - Honeycomb Energy's stacking technology is positioned as the optimal solution for mass production of solid-state batteries, addressing the brittleness of solid electrolytes [5][12]. Group 4: Safety and Efficiency - The second-generation Long Scale Armor battery employs high-integration thermal separation technology to eliminate short-circuit risks, achieving safety standards six times higher than industry norms [9]. - The latest short-blade cell technology can achieve a 6C charging rate with an energy density of 195 kWh/kg and a cycle life exceeding 5000 times [10][12]. - Honeycomb Energy's thermal composite stacking technology enhances production efficiency by 100% and improves yield rates to over 99.5% [12][13].

Core Viewpoint - The article discusses the advancements in battery technology showcased by Hive Energy at the 17th Shenzhen International Battery Technology Exchange and Exhibition (CIBF2025), emphasizing the importance of the stacking process for fast-charging and solid-state batteries. Group 1: Stacking Technology - Hive Energy's chairman, Yang Hongxin, believes that the stacking process is the best solution for mass production of fast-charging and solid-state batteries, outperforming the traditional winding process in terms of stress distribution and metal deposition morphology [1] - The stacking process leads to more uniform metal deposition within the cell, making it the only viable technology for mass production of all-solid-state batteries, especially under the brittle conditions of solid electrolytes [1] - Hive Energy has focused on the stacking process since its inception, which began to gain traction in the power battery industry in 2018, contrasting with the well-established winding process [1] Group 2: Innovations in Stacking Process - The most common stacking technologies in the industry are Z-stacking and cut-stacking, while Hive Energy employs a thermal composite stacking technology that allows for eight stations to stack simultaneously, achieving a stacking efficiency of 0.125 seconds per piece [2] - Significant innovations were made in the design, manufacturing processes, production line algorithms, and raw materials to develop the thermal composite stacking technology, fundamentally transforming the entire production chain [2] - More companies are adopting stacking methods for battery production, including Geely's Jiyao Tongxing and GAC Aion's Yinpai Battery [2] Group 3: Fast-Charging Technology - Yang Hongxin highlighted that over 60% of EV/PHEV users charge their batteries to full capacity, while the industry typically focuses on charging times between 10%-80% SOC for EVs and 30%-80% SOC for PHEVs, neglecting the efficiency of the final charging stage [3] - Hive Energy aims to enhance the fast-charging performance at the end stage, achieving a full charge time of 15 minutes for its 4C fast-charging project, with the time to charge from 80%-100% SOC reduced to 5 minutes, a 30% improvement over competitors [3] - The 4C fast-charging project utilizes the stacking process, allowing for higher charging capabilities and features a smart dual-temperature control system for optimal battery charging conditions [3] Group 4: Second-Generation Dragon Scale Battery - The second-generation Dragon Scale battery is the largest hybrid battery globally, featuring a capacity of 65 degrees, supporting 800V fast charging, and a range exceeding 400 kilometers [3] - This battery can charge from 20% to 80% SOC in just 12.1 minutes, with fast charge cycles exceeding 1600 times and supporting 6C ultra-fast charging [4] - The battery incorporates a "thermal-electrical separation" technology to prevent short-circuit risks and meets new national standards with a robust design capable of withstanding impacts of up to 1000J, exceeding the new standards by six times [4] - The second-generation Dragon Scale battery is set for mass production in mid-June 2025, with plans to equip high-end MPVs, sedans, and SUVs [4]