What are the differences in lithium batteries and lead-acid batteries? What need to pay attention to?

2022/04/08

  Author :Iflowpower – Portable Power Station Supplier

Learn from the market, where the electric car is selling, whether it is battery brand, style or brand, and the lead-acid battery is a lithium iron phosphate ion battery, then what is the difference in lithium-ion batteries and lead acid batteries Below the professional lithium-eM plant manufacturer, the company is introduced to you, and it is desirable to supply reference for consumers. Normally, the weight of the lead-acid battery pack is 16-30 kg, the volume is large; the weight of the lithium ion battery is generally 2.5-3.

0 kg, the volume is relatively small, so the riding is light and convenient. From the quality, the quality of the two is difficult to define, but consumers can purchase the quality battery produced by their actual manufacturer. Battery capacity The capacity of lithium-ion batteries is generally 8-10, and the lead-acid battery capacity is about 20.

The driving km, for example, the same 48V battery, in the case of electricity, the electric vehicle of the lithium-ion battery and lead-acid battery can exercise 30-40 kilometers, and the speed is important to use the motor size. The so-called lithium-ion battery life refers to 70% of the battery attenuation to a nominal capacity (25 ¡ã C, standard atmospheric pressure, and battery capacity of 0.2c), which can be considered to end the life.

The industry is generally calculated by the number of cycles full of lithium ion batteries. During use, the irreversible electrochemical reaction in the lithium-ion battery will result in a decrease in capacity, such as the decomposition of the electrolyte, the inactivation of the active material, the collapse of the positive and negative electrode structure causes the number of lithium ion embedded and desertless quantities, etc. Wait.

The experiment indicates that the higher magnification discharge can result in faster capacity, if the discharge current is low, the battery voltage is close to the balanced voltage, and can release more energy. The theoretical life of the lithium-ion battery is about 800 cycles, which belongs to medium in commercial rechargeable lithium ion batteries. Lithium phosphate is about 2,000 times, while lithium titanate is said to reach 10,000 cycles.

At present, the mainstream battery manufacturer is promised to be greater than 500 in the battery cells produced, but the battery core is behind the battery pack, due to the problem of consistency, the voltage and internal resistance cannot be exactly the same, its cycle life About 400 times. Xi'an Huamai long-term manufacturing lithium ion battery battery pack. What is a three-dimensional lithium-ion battery? How long is the ternary lithium ion battery life? In the battery industry, the three-dimensional ion battery has quickly occupied the market with many advantages, and gradually replacing traditional lead-acid batteries.

Regarding traditional batteries, the three-yuan lithium-ion battery has long life, energy saving and environmentally friendly, low maintenance cost, complete charge and discharge, light weight and so on, In nature, the lithium element is the lightest, the most atomic mass, the medium is lively, and the chemical properties are lively. It is easy to lose electrons to be oxidized to Li +, the standard electrode potential is -3.045V, the electrochemical equivalent is 0.

26g / Ah, lithium element These features determine it is a material having a high specific energy. Trimer lithium ion battery refers to a lithium secondary battery using three transition metal oxides using nickel-cobalt manganese. It fully combines the characteristics of lithium cobalt-cobaltate good circulatory performance, high-specific capacity of lithium nickel and lithium manganese acid and low cost, etc.

, using molecular level mixing, doping, coating and surface modification, synthesis nickel Multigen-like composite lithium oxides such as cobalt manganese is currently a lithium-ion rechargeable battery currently being widely studied and applied. The theoretical life of the ternary lithium-ion battery is about 800 cycles, which belongs to medium in commercial rechargeable lithium-ion batteries. Lithium phosphate is about 2,000 times, while lithium titanate is said to reach 10,000 cycles.

At present, the mainstream battery manufacturer is promised to be more than 500 times in its three-yuan battery standard, but the battery core is important after the assembly makes a battery pack, the voltage and internal The resistance cannot be exactly the same, and its cycle life is about 400 times. The manufacturer recommends that the SOC uses a window 10% ~ 90%. It is not recommended to carry out depth charge and discharge, otherwise it will cause irreversible damage to the positive and negative structure of the battery.

If it is calculated by shallow charge, the cycle life is at least 1000 times. In addition, if the lithium ion battery is often discharged in high magnification and high temperature environment, the battery life will drop sharply to less than 200 times.

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