Battery burning test methods and standard requirements:
When it comes to battery safety testing, the burning test is one of the most critical procedures used to evaluate the thermal stability and potential risks associated with battery failure. These tests are conducted under controlled conditions to simulate real-world scenarios where a battery might overheat or catch fire. The purpose is to ensure that batteries meet international safety standards before they are released for commercial use.
The burning test typically involves exposing the battery to an external heat source or inducing internal short circuits to trigger combustion. This helps in analyzing how the battery reacts under extreme conditions, including the release of gases, smoke, and the possibility of explosion. Different standards, such as IEC 62133, UL 1642, and UN 38.3, outline specific procedures and criteria for these tests.
Some of the common methods include direct flame exposure, electrically induced thermal runaway, and mechanical damage simulations. Each method has its own set of requirements regarding temperature, duration, and monitoring parameters. For example, in some tests, the battery is placed on a metal plate and exposed to a flame for a certain period, while in others, it is punctured or crushed to initiate internal failure.
Images below show examples of battery burning test setups and results from various standards. These visual representations help in understanding the impact of different testing conditions on battery performance and safety.
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