-Battery passing needle test does not equate to power lithium battery safety

Battery passing needle test does not equate to power lithium battery safety
author:enerbyte source:本站 click422 Release date: 2023-06-20 09:07:53
abstract:
The safety of lithium-ion batteries is not equal to that of power lithium-ion batteries through needle testing. With the decline of new energy subsidies, lithium-ion batteries have also regained the attention of car companies. BYD has launched a new "blade battery" that has successfu...

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The safety of lithium-ion batteries is not equal to that of power lithium-ion batteries through needle testing. With the decline of new energy subsidies, lithium-ion batteries have also regained the attention of car companies. BYD has launched a new "blade battery" that has successfully passed the strictest "needle test" in the battery industry, stating that blade batteries will never have "self ignition" and its safety is evident. According to reports, insiders of CATL said that BYD's blade batteries are not necessarily 100% safe.

The safety of lithium-ion batteries does not equal that of power lithium-ion batteries through needle testing

There are over 300 testing methods for the safety of power lithium-ion batteries, among which "needle testing" is considered the highest safety guarantee by industry insiders. Its principle is to simulate the consequences of Thermal runaway caused by exposed electric core punctured by external sharp foreign matters.

BYD put the ternary lithium ion battery, Lithium iron phosphate ion battery and its latest blade battery together for a comparative experiment of "acupuncture test". The results showed that the ternary lithium-ion battery experienced severe combustion during the testing process, with a surface temperature exceeding 500 degrees Celsius; The Lithium iron phosphate ion battery has no open flame and smoke, and its surface temperature is 200-400 ℃; The latest BYD blade battery has no open flames, no smoke, and a surface temperature of 30-60 degrees Celsius.

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