为了消灭电池爆炸，车企得做多少“傻事”

Core Viewpoint - Buick is focusing on enhancing battery safety in electric vehicles, emphasizing that safety is a fundamental principle rather than a luxury, especially in light of recent incidents involving electric vehicle fires [1][3]. Group 1: Battery Safety Measures - Buick's E5 model demonstrated effective battery protection during a high-speed collision, where the battery did not catch fire despite severe damage [1]. - The battery design includes a multi-layer protective structure, featuring an aluminum shell and a shock-absorbing space to mitigate collision impacts [1][2]. - The battery pack employs a "grid beam" structure made of high-strength steel, enhancing its ability to withstand various forces [2]. Group 2: Thermal Management and Fire Prevention - The battery system incorporates a thermal management design that includes heat insulation walls and a water cooling plate to quickly dissipate heat in case of thermal runaway [2]. - A "firewall" made of high-temperature resistant materials is installed to prevent fire from spreading to the passenger cabin during a thermal event [2][3]. Group 3: Collaboration and Development - Buick collaborates with CATL to develop a specialized battery formula that offers strong thermal stability and longevity, although it comes at a higher cost [3]. - The stringent safety standards for the battery design were influenced by past incidents, leading to a commitment to redundancy in safety features [3].