The external fire test device is a condition in which the temperature of the battery pack or the system surface suddenly rises when the electric vehicle passes through the high temperature ground or the ground with the flame after the electric battery pack or the system is installed on the electric vehicle. Observe the battery pack or the system in a short time. In the case of various conditions that may occur due to sudden increase in temperature, the external fire test device is a power battery pack or a system safety test special test instrument.
According to the standard: GB/T31476.3-2015 "Lithium-ion power battery packs and systems for electric vehicles - Part 3: Safety requirements and test requirements"
Test description
1.1 The test object is a battery pack or System.
1.2 In the test, the fiat disk size of the gasoline is more than 20cm and no more than 50cm. The fiat plate height is not higher than 8cm of the gasoline surface. The distance between the gasoline level and the test object is set to 50 cm, or the height of the ground of the test object under the no-load condition of the vehicle, or agreed by both parties, and the bottom layer of the fiat plate is filled with water.
1.3 Ignite the gasoline at least 3m away from the device under test. After 60s of preheating, place the oil pan under the device under test. If the oil pan is too large to move, you can use the sample holder to move the sample. the way
1.4 test objects are directly exposed to fiâmes for 70s