Can the lead -acid batteries of electric vehicles be changed to lithium batteries?

　　Everyone knows that after the release of the new national standards, there are strict regulations on the standards of electric vehicles. If you use a lithium battery instead of lead -acid batteries, you must also consider that its voltage must be the same as the original lead -acid battery. In addition, the charger must replace a special lithium charger. Can electric vehicle lead -acid batteries be replaced by lithium batteries?

　　First of all, the production cost of lithium batteries is high, the production equipment is expensive, the labor cost accounts for about 40 % of the production cost, and the price is about three times that of lead -acid batteries. Its three -fold price is not cost -effective, quite smooth, and it is difficult to recycle lithium battery, and the utilization rate is not high. Due to the small size of the lithium battery, multiple lithium batteries are connected in series during the assembly process, which may lead to interruption or welding of a welded joint of the transportation and use. This is a common problem when the lithium battery is connected.

　　Secondly, the large current discharge characteristics of the lithium ion power itself are shortcomings. Considering the frequent start of the crowded road, the battery life will be greatly shortened. Lithium batteries have potential safety hazards of fire and explosion. No one is willing to buy a "time bomb" under his body. Especially when consumers do not know that when the facts of buying some inferior lithium batteries on the Internet, the sealing conditions of electric vehicles are not very good, and it is easy to cause unsafe contact due to moisture and other reasons. Some people may say that lithium battery technology is now developing quickly and there will be no such problems, but no one can guarantee that this problem will not happen.

　　Third, the weight and volume of lithium batteries are the same compared to lead -acid batteries. The capacity of lithium batteries is generally about 3 times that of lead -acid batteries. However, the effect is actually limited for electric vehicles as a replacement tool, because many lead -acid batteries have also greatly improved their battery life, which reduces the gap between lithium batteries and lead -acid batteries.

　　4. If you use a lithium battery instead of lead -acid batteries, you must also consider that its voltage must be the same as the original lead -acid battery. In addition, the charger must replace a special lithium charger. Of course, there is another problem. If the lithium battery is not installed properly or there is a quality problem, the controller may burn out, which is one of the reasons why it is not recommended.

　　Fifth, coupled with the promulgation of new national standards, speed limit 25 km/h, etc., consumers' pursuit of electric vehicles will not be too harsh, so that consumers spend several times to pay. How many people are willing. The price of lithium batteries is several times that of lead -acid battery, which reflects the low price ratio of lithium batteries and does not meet the standards of ordinary users to choose electric vehicles. Although lithium batteries have the characteristics of light weight, long life, and long service life, the effect is not obvious in actual operation. To replace lead -acid batteries with lithium batteries, we must also consider the size of the battery compartment. Generally speaking, the lead -acid battery compartment is relatively large and the lithium battery is relatively small. If you want to replace it, you must consider this factor. If the gap after installation is too large, it is easy to cause small shaking inside the battery to reduce life.

　　6. Lithium battery is more stable than lead -acid batteries. If they are exposed in the water or handled properly, they can easily explode. Therefore, this is an important reason why I don't recommend replacing lead -acid batteries with lithium batteries. Another thing to note is that lithium batteries are multiple structures, as long as there are problems, it will affect the overall quality.

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