吉利汽车发布新一代刀片电池，已通过“八针同刺”试验

界面2024-06-28

界面新闻记者 |庄键又一家车企发布自研自产的动力电池新品。6月27日，吉利汽车发布神盾短刀电池，其采用磷酸铁锂体系，电芯能量密度达到192 Wh/kg。电芯是组成电池包的最小单元。磷酸铁锂电池和三元电池是目前动力电池的两种主要技术路线，前者目前已成为国内新能源汽车的主流。在磷酸铁锂体系下，神盾短刀电池的能量密度属于行业第一梯队，但并非最高水平。2022年，宁德时代(300750.SZ)就曾披露，其...

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虎虎生威万岁
2024-06-28
虎虎生威万岁
自研自产优秀[强]

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Wh/Kg。蜂巢能源董事长杨红新曾介绍称，短刀电池的优势，首先是体积能量密度的提升，因为它的成组效率更高。其次，短刀产品会减少连接件和结构件，降低电池系统的整体成本。他还补充称，短刀化能提升电池的安全性，电池厚度对安全性的影响很大，越薄的电池越安全。吉利汽车的上述产品发布会披露，就电池安全而言，神盾短刀电池通过了“八针同刺”试验，即八根直径5毫米的钢针同时穿刺电芯，导通正负极造成短路，并静置1小时，电芯不冒烟、不起火、不爆炸。通常情况下，针刺实验只使用一根钢针进行电芯的穿刺。李传海介绍称，采用八针同刺的试验方式是为了体现神盾短刀电池的安全性。就目前而言，针对锂离子电池的检测并不强制要求进行类似的针刺实验。此外，神盾短刀电池的循环寿命可达3500圈，相比行业平均寿命提高40%，行驶里程可达100万公里。作为刀片电池的技术首发者，比亚迪据称将在今年8月发布性能更为优异的第二代刀片电池，但界面新闻并未从该公司证实此消息。神盾短刀电池将在吉利银河E5率先搭载，该款纯电SUV预计于8月上旬上市。根据规划，该款电池的电芯计划在位于江苏盐城的电池基地生产，这座电池工厂的年产能为12 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