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What is a battery?

Storage Battery is a device that directly converts chemical energy into electrical energy. It is a rechargeable battery designed to realize recharging through reversible chemical reaction. It usually refers to lead acid battery. It is a kind of battery and belongs to secondary battery. Its working principle: when charging, the external electric energy is used to regenerate the internal active substances, and the electric energy is stored as chemical energy. When discharging, the chemical energy is again converted into electrical energy output, such as cell phone batteries commonly used in life.

The above introductions about lithium batteries and batteries are all from Baidu Encyclopedia. Although the encyclopedia entries can be edited by everyone, the general authenticity of lithium batteries and batteries as industrial words can be guaranteed. However, the encyclopedia entries can only be used as a simple reference. If you want to know more about lithium batteries or batteries, you can get more accurate information by asking people in relevant industries.

Since lithium battery and battery can often appear together, it shows that they are similar, that is, they have roughly the same functions. They both exist as power supply tools. However, in this article, we focus on the differences between the two, so we won't discuss their similarities here.

Let's go on to discuss the differences between lithium batteries and batteries. In addition to the differences in definitions, the differences in performance are the focus of the differences. It is the difference in performance that enables lithium batteries to almost completely replace lead-acid batteries in today's era.

What is the difference between lithium battery and battery? When querying lithium batteries, there will be many articles related to lithium batteries. In these articles, the battery appears quite frequently, and many people may think that the battery in the article is a lithium battery. However, this idea is wrong. The battery mentioned in the article generally refers to the lead-acid battery, while the lithium battery generally refers to the lithium-ion battery. The raw materials of the two are quite different and should not be confused.

The difference between lithium battery and battery

What is a lithium battery?

"Lithium battery" is a kind of battery with lithium metal or lithium alloy as cathode material and non-aqueous electrolyte solution. In 1912, the lithium metal battery was first proposed and studied by Gilbert N. Lewis. In the 1970s, M.S. Whittingham proposed and began to study lithium ion batteries. Because the chemical properties of lithium metal are very active, the processing, storage and use of lithium metal have very high requirements on the environment. Therefore, lithium batteries have not been used for a long time. With the development of science and technology, lithium batteries have become the mainstream.

192V lithium iron phosphate battery pack

Performance comparison between lithium battery and storage battery

Temperature tolerance: the common operating temperature of lithium battery is - 20~60 ℃, but the performance of lithium battery will decline when the temperature is lower than 0 ℃, and the discharge capacity will decrease accordingly. Therefore, the operating temperature of lithium battery with complete performance is usually 0~40 ℃. The temperature of lithium batteries required by some special environments is different, and some of them can operate normally in the environment of hundreds of degrees Celsius.

The working temperature of the battery is generally required to be between 20 ℃ and 25 ℃. When the temperature is lower than 15 ℃, its discharge capacity decreases. When the temperature decreases by 1 ℃, its capacity decreases by 1%. When the temperature is too high (greater than 30 ℃), its life will be greatly shortened.

Cycle life: The cycle times of lithium battery are generally about 2000~3000 times, while the cycle times of battery are about 300~500 times. The cycle life of lithium battery is about five or six times that of battery.

Specific mass energy (WH/kg): 100~150 for lithium batteries and 30~50 for batteries.

Volume specific mass (Wh/L): 200~250 for lithium batteries and 60~90 for batteries.

Charging and discharging: lithium battery has no memory effect; The battery can be charged and discharged at any time. The battery self discharge is low, and the monthly self discharge is less than 1%. The battery can be stored for a long time; Powerful, fast charging and discharging, more than 80% charging in 20 minutes, and discharging in 15 minutes.

The storage battery has memory effect and cannot be charged and discharged at any time; There is a serious self discharge phenomenon, and the battery is easy to be scrapped after being put aside for a period of time; The discharge rate is small, and large current discharge cannot be carried out for a long time.

Another big difference between lithium batteries and batteries is environmental protection. In this era of environmental protection, environmentally friendly and efficient batteries can better adapt to the development trend of the times and be used more widely. In modern times, lithium batteries are used in all aspects of our lives, such as cell phone batteries, watch batteries, power car batteries, and so on.

In these applications, lithium batteries also have different shapes, sizes and types. Among them, the lithium battery pack is considered to have a broad development prospect in lithium batteries. The lithium battery pack can be used in small machine rooms, weak current rooms and other room subsystems, communication base stations, indoor and outdoor air conditioning free sites, radio and television, special, petroleum and other unmanned sites. It can be seen from the application scope of the lithium battery pack that the lithium battery pack is highly adaptable to the environment, suitable for unmanned sites, and saves manpower.

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