Battery pack safety test

The closest squeeze test to a real accident
The squeeze test is used to simulate the situation of a battery being squeezed during a traffic accident. As the deformation of the battery increases, the positive and negative terminal collector will be the first to tear. A very large current is generated at the short circuit point, and the heat is released intensively, causing the temperature of the short circuit point to rise sharply, so it is easy to cause thermal runaway, and then cause fire or explosion.

In the extrusion test, the battery pack shell showed obvious deformation, the internal structure was damaged, the battery core was punctured by the internal parts, and high voltage short circuit occurred, resulting in thermal runaway. The standard for passing the squeeze test is generally no fire, no explosion. Ningde's battery products, on the other hand, can even be extruded and deformed, and continue to work properly.

In the extrusion tests of the Ningde era, the force exerted on the battery pack was ten tons. The 12-meter bus weighs 7 tons, with passengers and luggage weighing nearly 10 tons, which means it can at least simulate the crush of a 12-meter bus.

After countless complex processing and testing processes, a finished automotive battery unit printed with CATL LOGO was finally born, but this is not the end of quality control. In order to control the quality and quality of daily use, all finished batteries and cells have their own unique codes. If that battery or even that cell fails in the future, it can be traced back to that production line or even that batch of raw materials. For the battery with a certain risk of products, quality is always the most important link.

At present, CATL has formed a complete chain system from raw material mining to late recovery. And the cooperation with BMW, Mercedes-Benz and other international enterprises, once again proved the advantages of its products. Product stability and good reputation are the key to win. However, in the new energy industry, if you don't advance against the current, you will fall back. In the future, you need to constantly introduce market competitive products to always stand at the peak of the industry.