The development trend of lithium batteries, who is responsible for the rise and fall of lead-acid lithium batteries?

The application of lithium batteries for electric vehicles benefited from the implementation of the new national standard. Some professionals predict that in the future, lithium batteries for electric vehicles will embark on a road of rapid development, and lead-acid batteries will gradually be replaced by lithium batteries.

01,

Classification of lithium batteries for electric vehicles

Lithium batteries are different according to the cathode materials used , Can be divided into three main categories:

If you talk about safety, iron-lithium is the best, followed by manganese-lithium, and the worst is ternary;

If you compare energy, the best ternary, followed by manganese lithium, and the worst is iron lithium;

If you ask about the cycle life, the best is iron-lithium, followed by ternary, and the worst is manganese-lithium;

In terms of cost, the best is manganese-lithium, the middle one It is iron lithium, and the worst is ternary;

If you ask about the broadness of temperature, manganese lithium is the best, followed by ternary, and iron is the worst. Lithium

02、

The advantages and disadvantages of electric vehicle lithium battery

Advantages

1. Lithium battery has long life, light weight and small size

The life of lead-acid battery is generally About 2 years, lithium batteries are more durable, with a life span of 4-5 years; and lead-acid batteries are generally fully charged and discharged within 300 cycles, while lithium batteries have more than 500 full charge and discharge cycles. Moreover, the volume of the lithium battery is 2/3 of the volume of the lead-acid battery, and the weight is about 1/3 of the weight of the lead-acid battery, which is more convenient to use.

2. Lithium batteries are more durable. Lithium batteries are more durable than lead-acid batteries. When used at room temperature, lithium batteries can be charged continuously for 48 hours without battery swelling and leakage. Wait for the accident, the capacity remains above 95%. And under the special charger, it can charge and discharge quickly. Deep charge and deep discharge more than 500 times, and there is still no memory, and the general life span is basically about 4 to 5 years.

Disadvantages:

1. The price of lithium battery electric bicycles is too high. At present, the price of lithium battery electric bicycles is generally higher than that of lead acid. Battery electric bicycles are several hundred yuan to one thousand yuan higher, which is difficult to be accepted by consumers. However, as the application technology of enterprises matures, the price of lithium battery electric bicycles will gradually become more popular.

2. The safety of lithium batteries The unstable safety of lithium batteries is an important factor restricting its rapid development. The frequent explosions of lithium battery charging and fire incidents have cast a shadow on lithium batteries.

03,

Prospects of lithium battery for electric vehicles

With the introduction of the new national standard for electric vehicles and bicycles, lightweight batteries and high energy density have become an inevitable trend of power energy. Lithium batteries are undoubtedly the best choice and a development trend.

Just at the recent Nanjing Exhibition, it is not difficult for us to find this trend. The number of lithium battery companies participating in the exhibition has increased significantly, Xingheng, Tianneng, Chaowei, Haisi Many battery companies such as Da, Ju Limei, Boliwei, Xinchi, Northern Power, Leoch and so on have brought new lithium battery products.

So on the whole, the momentum of lithium battery development has come. It is hard to say how much the national standard can affect, but most companies and consumers are already aware of it. With the market, there will only be more and more entrants, and the competition will become more and more fierce.