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Author ：Iflowpower – Portable Power Station Supplier
The battery life is important to refer to the time of the shelf life of the battery, that is, the time required to reach the specified performance indicator after the battery is placed. Self-discharge is an important factor affecting battery life. In addition, battery life is also related to the conditions of use, such as temperature and working current.
For the secondary battery, in addition to the shelf life, more important is the life of the charge and discharge cycle. The coulomb efficiency of the battery has largely determined the cycle life of the secondary battery. Many factors reducing circulating life.
Related to electrodes, repeated charge and discharge reduces the active surface area of the electrode, adding current density, new polarization. The structure of the active substance changes; the electrical contact of the active particles is deteriorated, even fall off. Corrosion of electrode materials, including fluid collection.
In electrolyte solution, electrolyte or conductive salt decompose to reduce electrical conductivity, resulting in passivation of interface. In addition, membrane is blocked or damaged, and the battery life will also shorten battery life. Battery Safety: Electric Vehicle Lithium ion battery In order to ensure safe battery, power supply, especially in the battery, before the battery, the battery, the battery must pass through comprehensive safety test, including the specific test content including : Charge and discharge capacity test, short circuit testing, high temperature testing and drilling test, corrosion resistance test, etc.
Specific test methods and inspection standards See battery safety performance test. Battery mechanical properties: mechanical properties include anti-collision, impact and impact. .
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