Lithium batteries have fully penetrated into all aspects of human life, and it seems that we are inseparable from lithium batteries. However, as a complex chemical-electronic product, ordinary people still have a lot of questions about lithium batteries. Let's take a look at what kind of questions are and what are the answers.

　　1. What kind of protection is used to protect the safety of lithium batteries?

　　a. Add additives to the electrolyte. When the battery is overcharged, a large-area open circuit is formed inside, so that the battery no longer heats up.

　　b. The cap adopts an explosion-proof structure. When the internal air pressure reaches a certain level, it ruptures and releases gas, so that the battery will not explode.

　　c. In the research and development stage, it is necessary to conduct simulation tests on extreme conditions, such as external short circuit, overcharge, acupuncture, impact, incineration, etc., to investigate battery safety performance.

　　2. Why does the constant voltage charging current gradually decrease?

　　Because when the constant current process is terminated, under the action of a constant electric field, the concentration polarization of the internal Li+ is gradually eliminated, and the reduction in the migration number and speed of ions is manifested as a gradual decrease in current.

　　3. What is the rated capacity?

　　Rated capacity refers to the minimum amount of electricity that should be discharged under certain discharge conditions when the battery is designed and manufactured. Common units of capacity are: mAh, Ah, where 1Ah=1000mAh.

　　4. What is actual capacity?

　　The actual capacity refers to the actual power released by the battery under actual conditions, which is mainly affected by the discharge rate and temperature.

　　5. What is the internal resistance of the battery?

　　It refers to the impedance that the current flows through the battery when the battery is working. The large internal resistance of the battery will cause the voltage of the battery to decrease and the discharge time to shorten.

　　6. What is open circuit voltage?

　　Refers to the positive and negative voltages of the battery in a static state when the battery is not charged or discharged. It can be used as a preliminary judgment condition for the remaining capacity of the battery.

　　7. Why do the batteries need to be stored for a period of time before they can be packaged and shipped?

　　After a period of storage, the electrochemical performance of the battery will stabilize to ensure quality.

　　Lithium-ion battery (LIB) has become the main energy storage solution in modern social life. Among them, lithium iron phosphate batteries are a perfect replacement for lead-acid batteries, and they are the first choice for grid-connected peak shaving, off-grid energy storage, photovoltaic energy storage, UPS, data center and other industries.