An article to understand: the difference between power battery breathing cycle test and burst pressure test

With the rapid development of new energy vehicles, the safety of power batteries is getting more and more attention. As we all know, power battery is like the "heart" of new energy vehicles, which is not only critical but also needs to be protected.The power battery pack of a new energy vehicle consists of several modules, like the battery top cover, aluminum casing, electric cells, explosion-proof valves, rupture discs and so on.

Therefore their security testing is quite important, and one of theBreath Cycle Test and Burst Pressure Test are two tests that are essential in safety testing., so what is the difference between these two tests?

Ⅰ.Different test purposes

Respiratory Cycle TesterIt is a kind of equipment used to test the functionality and life of new energy power battery, mainly for fatigue resistance test, also called cycle life test.Respiratory Cycle TesterBy controlling the bi-directional air pressure to simulate the actual situation of the power battery in use, thus accurately reflecting the real performance characteristics of the rupture disc, and detecting whether the rupture disc can withstand multiple cyclic variations under a certain pressure in order to evaluate the performance and stability of the battery.

(indicates contrast)Burst TesterIt is a high-voltage destruction of the battery to simulate the safety performance of the battery under extreme working conditions, which is a safety destruction test.Burst Pressure TesterThe effects of an explosion on a cell are simulated by applying a blast load, and the rupture strength, burst pressure values and other performance parameters of the cell are measured.

Ⅱ.Different test principles

Respiratory cycle testing usuallyIn the micro-pressure range of 0~800kPaGas loading and unloading was performed inside to simulate the long-term respiration effect of the cell.

Battery Cover Column Breathing Cycle Test

Burst pressure testing applies an extremely high pressure shock to the battery, quickly destroying it and observing the form of destruction.General pressure in 0~3.5MPaThe

Battery Cover Rupture Pressure Test for Rupture Discs

III.Different test methods

Respiratory cycle testing is required forDozens or even hundreds of loading and unloading cycles, observing the change in volume of the battery.Long test cyclesThe

Burst pressure testing is only required inHigh pressure can be applied in a few tens of seconds(math.) genusShort test cycle timeThe

IV. Summary

Breathing cycle test and burst pressure test can comprehensively evaluate the safety of batteries and ensure the safe operation of electric vehicles. These two tests have different focuses, and JCGK takes this as an entry point, and has been engaged in the field for years.Air tightness testing equipmentand its core control and functional components on the experience of research and development, began to develop the new energy market breathing cycle test and burst pressure testing and other related instruments and equipment.The company launched theBreath Burst TesterWidely used in new energy vehicles lithium batteries, power batteries, battery cells, aluminum shells, battery covers, explosion-proof valves, battery packs and other different forms of battery products, in the case of successfully seized the market opportunity, Shenzhen Precision Industrial Technology has rapidly grown into a leading enterprise in this field of segments.

In the future, JCGK will focus on production capacity expansion, technological innovation, and market development. JCGK plans to build on the success of the new energy automotive market and target the development of emerging markets such as energy storage, as well asWe participate in the international market competition and keep moving towards the globalization of the first-class enterprises to provide the best solutions for the quality and safety of our customers' products.