How to check whether the lithium battery is meet the safety indicators?

Source: 2020 - 04 - 15 18:08 hits: time how to check whether the lithium battery is meet the safety index along with the development of science and technology, lithium-ion batteries are increasingly applied in all walks of life, from the electronic watch and mobile phones to laptops and cars. However, in the process of using lithium battery, we will encounter some safe hidden trouble, such as: mobile phone lithium battery explosion, or because we are using the wrong lithium-ion batteries, or lithium battery itself quality is not up to standard. Lithium batteries must pass the security testing, such as overcharge, short circuit, acupuncture, extrusion, blow, etc. , if the lithium battery is not on fire, no explosion, it means that the lithium battery is qualified products, otherwise it is unqualified products. The key is how to detect the lithium battery will achieve the required safety level? Method can detect the following three ways: a: first of all, will be charged at the test battery placed in the test of the testing machine in the plane, then 13 + 1 kn extrusion pressure cylinder. Finally, the battery is 32 mm diameter steel flat extrusion. If the lithium battery to withstand maximum pressure, and there is no fire or explosion, the lithium battery products are qualified. Method 2: heavy impact tested after the battery fully charged, put it on the test machine, aircraft will be the diameter of the steel column vertical 15. 8 mm center batteries, 9. The weight of 1 kg of free to the steel column above the battery from a height of 610 mm. The battery will not fire, also won't explode. Method 3: overcharge test is, in fact, the so-called overcharge test, test whether lithium battery internal stability, the method is very simple, first of all, in a full battery 1 c, and then carried out in accordance with the 3 c overcharge 10 v overcharge test, when the battery voltage rises to a certain voltage stability for a period of time, close to the battery voltage is rising rapidly, up to a certain extent, top hat the battery, voltage drop to 0 v, lithium battery no fire and explosion in the process, the lithium battery is qualified products.