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战斗力 鹅
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注册时间 2011-6-9
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发表于 2023-7-25 22:02
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给大家缓解一下焦虑。
NHTSA(美国公路交通安全管理局)对电车电池有详细的测试(2019年,七百多页ppt)。
引用其中一小部分SCTRI(单电池热失控启动)的测试:用加热器引燃一个电池单元,通过传感器来实时检查各单元温度和情况。
测试结果
“The SCTRI test with Manufacturer A vehicle and RESS was conducted successfully. A summary of test results is provided in Table 9. Single cell thermal runaway initiation occurred after approximately 26 minutes, longer than required for single cell testing, likely due to interaction with the module components. A clear pop noise was heard and some gray smoke was seen exiting the battery pack near the initiator bay (Figure 82). The smoke subsided within a few seconds, and no further thermal runaway events were noticed. The smoke alarm inside the cabin did not trigger. There was no ignition of flammable gases. ”
引燃单电池以后,冒了点烟,没发生连锁反应,其他单元都在60℃以内,且20分钟内稳定的降下去了。静置一个月,无任何异常发生。
19年的特斯拉电池已经是这个水平,目前的国产电池那就更难引燃了。
材料地址:https://rosap.ntl.bts.gov/view/dot/40791 |
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