Nail penetration test











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The voltage became almost zero about 0. Tests shall be performed continuously with the same battery, and shall be performed using 20 pcs of electric cells in total, with 10 pcs in a fully charged state and 10 pcs in a fully discharged state. Automotive Battery Introduction Safety Evaluation Test of On-board Lithium-ion Battery Lithium-ion batteries are widespread for portable devices since they were commercialized in s. As a nail penetrates, short circuit occurs between a positive electrode and a negative electrode while the nail acts as a conductor and Joule heat is generated Figure 1.

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Figure 4 Result of observation about the nail stick test a Just before the nail is stuck b The nail is penetrating by several mm. A nail penetration test was executed using a commercially-supplied lithium-ion cell. Tests shall be performed continuously with the same battery, and shall be performed using 20 pcs of electric cells in total, with 10 pcs in a fully charged state and 10 pcs in a fully discharged state. Therefore, sufficient countermeasures are necessary for executing the test itself safely. Lithium-ion batteries and other secondary batteries are equipped with protective elements and protective circuits for safety. Evaluating sealing performance of the battery and internal electrical connection by means of rapid and extreme temperature variation.

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Internal short-circuit test 2. T6 and T8 are only applicable to electric cells. Automotive Battery Introduction Safety Evaluation Test of On-board Lithium-ion Battery Lithium-ion batteries are widespread for portable devices since they were commercialized in s. As for the large-scale electric cell which is for EV or HEV applications, the seven items except for the T7 targeting assembled batteries are specified Table 2.

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Description: Tests shall be performed continuously with the same battery, and shall be performed using 20 pcs of electric cells in total, with 10 pcs in a fully charged state and 10 pcs in a fully discharged state. Here, the large-scale electric cell denotes the lithium-metal electric cell beyond the lithium content of 12 g, and the lithium-ion electric cell beyond the watt-hour rating value of Wh. The sample battery is penetrated with a nail to simulate an internal short-circuit and verify that the battery does not catch fire or burst. The test conditions are shown in Table 1. Test equipment Support for large batteries Test equipment features an elevator stage enabling testing of various battery sizes. Battery Nail Penetration Test. By setting the lithium-ion battery into the nail penetration test container and substituting inside the container with inert gas, it is possible to perform the test without generating ignition by generated gas. There was a problem providing the content you requested Please contact us via our support center for more information and provide the reference number below. Apply the half-sine wave acceleration with the peak of 50 G and duration of 11 msec. Regarding the test method, it is specified to execute eight items of the test, from T1 to T8.
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