科学家提出全气候电池设计框架

Core Insights - The research from Penn State University introduces an innovative all-climate battery design framework aimed at enhancing the performance of lithium-ion batteries across a wider temperature range, addressing their limitations in extreme conditions [1][2] Group 1: Temperature Range and Performance - Current lithium-ion batteries operate effectively between -30°C and 45°C, but face challenges in high-temperature environments and performance degradation in low temperatures [1] - The new design expands the operational temperature range to -50°C to 75°C, making it suitable for applications where traditional lithium-ion batteries struggle [2] Group 2: Design and Efficiency - The proposed battery integrates heating elements within the battery itself, allowing it to operate safely in high temperatures and generate heat to combat cold environments [1] - This internal heating structure, made from nickel foil approximately 10 micrometers thick, is powered by the battery itself, which minimizes additional weight and volume while enhancing temperature regulation capabilities [1][2] Group 3: System Simplification - By incorporating thermal management functions within the battery, the design significantly reduces the need for external temperature control devices, simplifying the overall system structure and saving space [2]