After the new national standard, will the lead-acid battery disappear slowly?

At present, China's electric vehicle industry is still dominated by lead-acid electric vehicles, because lead-acid batteries have been available for nearly 160 years, the technology has been quite mature, and the battery manufacturing cost has decreased significantly. A conventional group of electric vehicle colloidal lead-acid batteries is only less than 1000 yuan. It can be said that electric vehicles can fly into the homes of ordinary people, The large-scale promotion of lead-acid batteries has played an indispensable role.

So what are the advantages and disadvantages of lead-acid batteries?

Advantages:

1. Mature technology and good stability

Compared with lithium battery, the technology of lead-acid battery is more mature, especially the colloidal lead-acid battery, which is mainly promoted now. The battery maintenance cost is relatively low, the recycling value is high, and there will be no explosion or fire

DANGER.

2. Low price and wide popularity

China is a country with large sales of lead-acid batteries. Nearly 500 million people are using lead-acid batteries. The price of lead-acid batteries with the same capacity is generally lower than that of lithium batteries.

All batteries are easier to buy and easy to replace, but lithium batteries need to be purchased from regular manufacturers or direct stores. The stability and safety of lithium batteries are lower than those of lead-acid batteries.

3. Simple maintenance and low maintenance cost

The maintenance is relatively simple and the maintenance cost is relatively low. Now the maintenance free lead-acid battery is popular in the market. This battery does not compensate for the electrolyte. It also has the characteristics of shock resistance, high temperature resistance, small volume and small self discharge.

inferiority:

1. Theoretically, it is close to the physical limit of lead-acid battery, and the exploitable potential is small.

At present, with the efforts of technicians, the lead-acid battery is close to the limit of its own physical properties. The cycle charge and discharge technology of 600-700 times a year is close to the limit of lead-acid battery.

The batteries on the market basically need to be replaced with new batteries after 1-1.5 years, and the battery life shall not exceed 3 years.

2. Lead is used as raw material, which is very heavy

Lead acid batteries use lead as the raw material of electrode plate. The weight of all batteries is tens of kilograms, which is 5-6 times that of lithium batteries of the same level. Electric vehicles with lead-acid batteries are generally heavy and very bulky when moving cars. Lead itself is also a heavy metal pollutant, which is harmful to human body and the environment.

3. The battery has memory effect

If the lead-acid battery is often not full or charged, it is easy to form the memory effect of the battery, resulting in the decline of battery capacity and the shortening of battery life

After the new national standard, the quality standard of electric vehicle is less than 55kg. According to this standard, at present, only 60v20a lead-acid battery is close to 30kg. If the empty vehicle mass is less than 25kg, the appearance and structure of the whole vehicle will be strictly limited. Based on this situation, electric vehicles will introduce lithium batteries into battery procurement in a large area in the future, In order to reduce the structural problems caused by the vehicle quality, the lithium battery must be a blowout in the future. In addition, the lead-acid battery has reached the physical limit, and the lithium battery is still in the R & D stage and in a growth stage in the market. Therefore, the lithium battery products after the new national standard are likely to replace the lead-acid battery products.

At present, two traditional battery giants, Tianneng Chaowei, have vigorously put into operation lithium battery projects and started to develop lithium battery products. At present, domestic lithium battery enterprises such as Ningde times and BYD have been listed in recent years. Foreign traditional lithium battery giants such as Samsung and Tesla have made great efforts to break through lithium battery technology with the promotion of new energy vehicles, making the cost of lithium battery products begin to decline.