Workflow
动力电池安全
icon
Search documents
电车起火,电池新国标也杜绝不了|工程师来信
3 6 Ke· 2025-05-28 06:14
Core Viewpoint - The new national standard for electric vehicle batteries in China aims to enhance safety by implementing stricter requirements, particularly regarding fire and explosion prevention, while acknowledging that no technology can completely eliminate the risk of battery fires [1][2][11]. Group 1: New National Standards - The new standard, GB38031-2025, modifies previous requirements by mandating that batteries must not catch fire or explode, and that smoke must not harm passengers [1][2]. - New testing methods have been introduced, including internal heating tests to simulate harsher conditions, in addition to existing external heating and puncture tests [2][8]. - The new standards also include bottom impact tests and safety tests after fast charging cycles, which battery manufacturers must meet [8][10]. Group 2: Battery Safety and Technology - Achieving safety at the pack level (NTP) is not sufficient; extreme conditions cannot be fully covered by current testing methods, indicating that driver behavior remains crucial for safety [3][4]. - The intrinsic safety of individual battery cells is significant for the overall safety of the battery pack, with safer cell designs contributing to compliance with national safety standards [5][11]. - Material choices, such as using polyimide (PI) for separators instead of polypropylene (PP) or polyethylene (PE), could enhance safety, although cost and commercial viability are challenges [7][12]. Group 3: Industry Implications - The new standards may lead to a reshuffling among battery material suppliers, but many manufacturers already adhere to high standards, minimizing upstream impacts [12]. - The enforcement of the new standards may require stronger penalties to deter potential shortcuts in manufacturing processes, as merely raising standards may not eliminate all risks [13].
瞭望新15年: 超快充爆发元年,安全标准何时升级
高工锂电· 2025-05-02 09:35
Core Viewpoint - The article emphasizes the rapid evolution and future challenges of China's power battery industry, particularly focusing on the transition to ultra-fast charging technology and the associated safety concerns that arise as these technologies scale up [1][2][3]. Group 1: Industry Evolution - Over the past 15 years, China's power battery industry has transformed from a nascent stage to a global leader, becoming a key representative of Chinese manufacturing and economic transformation [1][2]. - The year 2025 is highlighted as a pivotal point for the power battery industry, marking the beginning of a new 15-year journey characterized by challenges, new application scenarios, technological innovations, and evolving business models [1][2]. Group 2: Ultra-Fast Charging Technology - The article identifies 2025 as a critical year for the commercialization of ultra-fast charging technology, driven by the need to alleviate "charging anxiety" [3][10]. - Major automotive companies are adopting ultra-fast charging technologies, with examples including Huawei's S800 and BYD's super e-platform, showcasing a strategic upgrade in charging efficiency [5][6]. - The penetration of ultra-fast charging technology into mainstream consumer price ranges is expected to increase significantly, with projections indicating that by 2025, over 30% of vehicles will support high-voltage fast charging [6][10]. Group 3: Safety Concerns - The rapid advancement of ultra-fast charging technology raises significant safety challenges, particularly regarding thermal management and the risk of thermal runaway due to high current charging [11][12]. - A new national standard for power batteries is set to be implemented in 2026, which will impose stricter safety requirements, including tests for battery safety after high-power charging cycles [13][12]. - The industry is exploring various strategies to enhance battery safety, including the use of safer materials, improved thermal management systems, and advanced battery management systems [17][20][21]. Group 4: Infrastructure Development - The construction of charging infrastructure is crucial for the widespread adoption of ultra-fast charging technology, with over 80% of new charging stations in 2024 expected to support high-voltage charging [10][11]. - Companies like CATL, Huawei, and BYD are developing integrated solutions for high-power charging stations, while new energy vehicle manufacturers are also investing in their own ultra-fast charging networks [10][11].
宁德时代成为首家通过动力电池新国标的企业
起点锂电· 2025-04-30 09:53
4月27日,宁德时代获得两张GB 38031-2025《电动汽车用动力蓄电池安全要求》(以下简称 "新国标")检测报告,成为 国内首家通过新 国标的企业。 其中,通过检测的产品含电池单体与电池包。 GB 38031-2025新版动力电池安全强制性国家标准于2025年3月28日发布,将于2026年7月1日正式实施。 此次送检产品是麒麟电池 ,检测报告由权威第三方认证机构中汽中心新能源检验中心颁发。中汽中心新能源检验中心能源系统部与宁德时代 测试验证中心团队成员共同出席并见证颁发仪式。 首份检测报告的颁发,不仅是对GB 38031-2025标准有效性和可操作性的验证,更是对宁德时代在动力电池领域技术领先能力的认可。 截至今年2月,全球已有超1800万辆汽车搭载宁德时代电池。动力电池安全对于宁德时代而言,是贯穿整个企业发展的生命线。未来,宁德时 代将通过持续的技术创新,不断提升动力电池热扩散、底部防护、快充安全等方面的安全水平,推动新能源行业高质量发展。 (来源:宁德时 代) | 往 | 期 回 顾 | | | --- | --- | --- | | 01 | | | 亿纬锂能供货特斯拉新品! | | 02 | | ...
宁德时代成为首家通过动力电池新国标的企业
鑫椤锂电· 2025-04-30 01:04
此次送检产品是麒麟电池,检测报告由权威第三方认证机构中汽中心新能源检验中心颁发。中 汽中心新能源检验中心能源系统部与宁德时代测试验证中心团队成员共同出席并见证颁发仪 式。 首份检测报告的颁发,不仅是对GB 38031-2025标准有效性和可操作性的验证,更是对宁德时 代在动力电池领域技术领先能力的认可。 GB 38031-2025新版动力电池安全强制性国家标准于2025年3月28日发布,将于2026年7月1日 正式实施。 -广告- 关注公众号,点击公众号主页右上角" ··· ",设置星标 "⭐" ,关注 鑫椤锂电 资讯~ 本文来源:宁德时代 4月27日,宁德时代获得两张GB 38031-2025《电动汽车用动力蓄电池安全要求》(以下简称 "新国标")检测报告,成为国内首家通过新国标的企业。 其中,通过检测的产品含电池单体与 电池包。 截至今年2月,全球已有超1800万辆汽车搭载宁德时代电池。动力电池安全对于宁德时代而 言,是贯穿整个企业发展的生命线。未来,宁德时代将通过持续的技术创新,不断提升动力电 池热扩散、底部防护、快充安全等方面的安全水平,推动新能源行业高质量发展。 进固态电池群 ,加小编微信:1324 ...