What are the main aspects of secondary battery performance? Voltage, internal resistance, capacity, internal pressure, self-discharge rate, cycle life, sealing performance, safety performance, storage performance, appearance, etc., others are overcharge, over-discharge, solderability, corrosion resistance, etc. What are the electrical performance indicators of mobile phone battery blocks? There are many electrical performance indexes of the battery …
The mobile phone lithium battery is a finished battery composed of battery cell and battery protection board. The mobile phone lithium battery will be activated before leaving the factory. After a series of processes of filling the battery case with electrolyte-sealing-forming-dividing, the activation of the mobile phone lithium battery is completed. The activated mobile phone …
Lithium battery, I think we should be more rigorous. It should be called the lithium-ion secondary battery. Li is the smallest diameter and most active metal on the element periodic table. If you are not sure, you can look at the periodic table “Lithium hydrogen-helium beryllium boron, carbon-nitrogen, oxygen, fluorine, and neon…”. Because Li has …
What is IEC 62133? The International Electrotechnical Commission (IEC) was established in 1906 and has a history of 114 years until 2020. It is the earliest international electrotechnical standardization Organization established in the world and is responsible for the international standardization work in the fields of electrical engineering and electronic engineering. The purpose of IEC is …
In recent years, electric vehicles have become more and more popular, but electric vehicle accidents have occurred more and more frequently. Therefore, we need to know why the charging of electric vehicles will suddenly catch fire or explode? Line aging Electric vehicles have been used for a long time, and the connection lines in the …
We are honored that our battery test equipment was used to test the effect of lithium battery crush and nail penetration. This batch of machines is already the old machine. We have improved more on the original basis, making our machines safer and easier to operate. The site is https://www.cnet.com/news/the-lithium-ion-battery-that-didnt-explode/# The old crush and nail …
The simple division of environmental testing can be divided into “climate environmental testing”, “mechanical environmental testing” and “comprehensive environmental testing”. Climate-related environmental tests include environmental stress tests such as temperature, humidity, and pressure, while mechanical environmental tests include environmental stress tests such as shock and vibration, and comprehensive environmental tests are stress tests that integrate …
Environmental testing type Environmental chamber testing usually uses a single-factor test and multi-factor combination test, which act on the products in a certain order. To improve the accuracy and reliability of the test results, environmental tests have also begun to develop comprehensive tests, and actively develop large-scale multi-functional environmental test equipment that can simultaneously apply stress …
What is UN Manual of Tests and Criteria Part III Subsection 38.3 In most of the guides of one equipment, you maybe find that it should be by the standard called UN Manual of Tests and Criteria Part III Subsection 38.3 ( also known as UN 38.3 Testing). You must wonder what exactly it is. …
What is thermal shock? Thermal shock means that due to the rapid heating or cooling, the object generates a large amount of heat exchange in a short time. When the temperature changes drastically, the object will produce a thermal shock. This phenomenon is called thermal shock. When a metal material is subjected to rapid heating …