Battery is one of the several major components of electric vehicles, providing a source of power to electric vehicles, and is also an important landmark technology for the development of electric vehicles. The performance of the power battery is directly related to the range of electric vehicles, and the power battery manufacturer is here to explain to you the classification of electric vehicle batteries and the advantages and disadvantages of various types of batteries.
Various classifications of batteries
Batteries in a broad sense can be divided into three main categories: chemical batteries, physical batteries and biological batteries, of which in electric vehicles, the most widely used is the chemical battery.
Definition of chemical battery: Chemical battery is a device that can transform chemical energy into electrical energy. The main part includes the electrolyte solution and the positive and negative electrodes immersed in the solution. When used, the wire is connected to the two electrodes, that is, there is a current through (discharge), and thus obtain electricity.
Classification: Chemical batteries are the most widely used batteries in the field of electric vehicles, and if we look at the structure, they can be divided into two categories: storage batteries and fuel cells.
Battery
Status: In the process of technology development, lead-acid batteries and lithium manganate batteries have been eliminated. Now the mainstream battery on the market is mainly lithium-ion batteries, there are also a few nickel-hydrogen batteries.
Lithium-ion battery
Its high energy density, the advantages of the number of cycle life has become one of the most commonly used battery types on the current electric vehicles.
Lithium iron phosphate battery
Compared to the ternary lithium battery, its battery energy density is less, resulting in the same weight of the battery, the range is much worse than the ternary lithium battery. But its safety is better than lithium-ion batteries.
Ternary lithium battery
In the case of the same quality, ternary lithium batteries have a longer range than the models using lithium iron phosphate batteries. However, the disadvantage of ternary lithium batteries is that they are less stable, and when their own temperature is 250-350 ℃, the internal components begin to decompose.
NiMH batteries
The size of the battery pack is much larger than the lithium battery. Moreover, the capacity of NiMH battery will decay during the cycle of charging and discharging, and excessive charging or discharging may aggravate the capacity loss of the battery.
Fuel Cell
Fuel cell is considered to be one of the ideal clean energy sources in the future. It is a chemical device that converts the chemical energy possessed by fuel directly into electrical energy.
In conclusion: With the support and strong promotion of policies, China's new energy industry has developed rapidly in recent years. At present, various industries are also looking for different ways to solve the technical problems. Charging, power exchange, mobile recharge and other modes of solving mileage anxiety are also being tried, and as the technology of all parties improves, it is also gradually drawing closer to the popularity and future of new energy applications.
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