What are the battery safety test items?
01）Short circuit test
02）Overcharge, over discharge test
09）Variable temperature cycle test
10）Trickle charge test
11）Free fall test
12）Low air pressure test
13）Forced discharge test
15）Electric hot plate test
17）Thermal shock test
21）Heavy impact test
The power battery installed on the new energy vehicle is a large object related to the passenger’s proof of safety. How to ensure that the power battery is still stable when the vehicle collides is the top priority of each manufacturer.
Although it is difficult to make the battery pack as hard as a stone, it can make him as stable as a stone, so that it can be banned and imprisoned, and it is forbidden and banned. Therefore, during the development of the power battery, engineers will use all kinds of tools. Extreme environment to verify the reliability of the design, such as the external fire test, seawater immersion and other test items in the safety test. Take the singularity iS6, which will be available in the second half of the year, as an example. Let’s take a look at the rigorous tests that its battery pack has undergone.
Power battery external fire test
From the line between the lines, you should be able to see one or two. The external fire test of the power battery is to put the power battery into the burning fire. According to the standard, the battery pack should be in the fire of 590° for 130 seconds, the battery has no explosion. There is no flame residue in the fire and burning. This kind of battery is considered as a pass. In simple terms, this test is to detect if the electric car has a fire in the collision, so that the personnel can escape even if they escape within the specified time. Emergency measures reserve time to ensure the safety of drivers and passengers.
Power battery drop test
The drop test of the cylindrical lithium battery is mainly to detect that the battery does not ignite, does not explode, or leaks.
Test Purpose: Drop test simulates accidental drops during transportation, carrying and use, which should not cause safety problems such as liquid leakage, fire and explosion of lithium ion batteries.
Power battery seawater immersion test
Because the national safety requirements for power lithium batteries are very high, the waterproof characteristics are one of the indicators, and must be tested after various conditions.
At present, the new energy car battery pack is waterproof and dustproof. IP67 is recommended. The car’s use environment is bad. It is not too much to do waterproof and dustproof protection. In the past few years, Shanghai has a year of heavy rain that caused the garage to accumulate water. The traditional cars are flooded. And the electric car is intact.
Do you think that the three tests on the iS6 are all done? Of course, it is not the safety test that is only one of the three major tests. The rest are performance tests and reliability tests. Each of them includes more than a dozen test items. The difficulty is better than that of the Tang dynasty. It’s hard to get money, so after experiencing such rigorous testing, the power battery developed by him is far less stable than the battery used by ordinary electronic products, so don’t worry about the safety of the IS6 battery.