Lithium Battery Or Lead-Acid Battery Which Is Better For Electric Vehicles?

Lithium batteries are better. Whether it is volume specific energy, or weight specific energy, lithium batteries are more than 3 times higher than lead-acid batteries. Lithium batteries are smaller and lighter. Long cycle life.

For example, they are 48V20AH, lithium and lead acid are basically the same, because the capacity is the same, but lithium will be lighter, so it can be slightly farther than lead acid.

But if the lithium battery is 48V10AH, the lead acid is 48V20AH, it is sure that the lead acid is far. Simply says, who has a large capacity who runs far, lithium has the advantage of being light and capable of large current discharge than lead acid, and the rest are the same.

Can you search for a series of large capacity lithium battery safety? Cost feasible? Why do cell phone batteries explode? Although the lead-acid battery is bulky, but the stability is much stronger than the lithium battery! The cost is basically accepted! Stability and safety and cost is higher than lithium batteries! As long as it is a battery, whether it is a lithium battery or a lead-acid battery, it is a heavily polluted commodity!

1: Lead-acid batteries and lithium batteries can not be simply good or bad, both have advantages and disadvantages, to adapt to different equipment needs. At present, most of the lithium battery products on the market are "electric bicycles" and the continuation is not very far.

2: Lithium batteries mainly rely on lithium ions to move between the positive and negative terminals to work. In the process of charging and discharging, Li+ is inserted and removed between the two electrodes: when charging the battery, Li+ is removed from the positive electrode and embedded into the negative electrode through the electrolyte, and the negative electrode is in a lithium-rich state; The opposite is true for electrical discharge. Generally, batteries containing lithium are used as electrodes, and the most negative electrodes at this stage are graphite. Compared with lead-acid batteries, lithium batteries have the advantages of light weight, large specific capacity, long cycle life, etc. As a power supply for the elderly, it is not only lightweight, portable and convenient to charge, but also contributes to the "lightweight and simple" design of vehicle products.

3: The electrode of the lead-acid battery is mainly made of lead and its oxide, and the electrolyte is a sulfuric acid solution. The main component of the positive electrode is lead dioxide, and the main component of the negative electrode is lead. In the discharge state, the main component of both positive and negative electrodes is lead sulfate.

4, in addition to the two batteries are energy storage devices,  others are all differents. Lead-acid batteries are safer and cheaper, but have a lower energy density than lithium-ion batteries, so they are larger. At this stage, in the battery (energy storage) technology research has not been able to achieve breakthrough progress, that is, "low-cost, high-performance" batteries have not been put into commercial practical application before, the excellent characteristics of the existing lead-acid batteries and lithium batteries can be combined to transform and upgrade, as the main research topic at present and in the next period of time. It is believed that this will have a clearer direction for the future development of electric scooters for the elderly and even the entire electric scooters industry.

The cost of anode materials, anode materials, fluid collectors, membranes, electrolytes and other main materials of lithium batteries is much higher than that of lead-acid batteries. The cost of assembling auxiliary materials and external circuit system of lead-acid battery is very low.

Due to the production process, the labor cost of lithium batteries is relatively large. In the manufacturing cost, the labor cost of lithium batteries accounts for more than 40%, while the labor cost of lead-acid batteries is generally 10% to 20%.

The mechanical equipment used in the production of lithium batteries is expensive, the value is high, and the depreciation loss of mechanical equipment is large. Most of the processes in the production of lithium batteries are irreversible, while lead-acid batteries are reversible and reused. The recycling value of lead-acid batteries after use is more than 40%, while the recycling value of lithium batteries is almost zero.

Whether it is volume specific energy, or weight specific energy, lithium batteries are more than 3 times higher than lead-acid batteries. Lithium batteries are smaller and lighter. Long cycle life. The cycle life of lithium batteries for electric vehicles is generally more than 800 times, and the lithium battery using lithium iron phosphate anode material can reach about 2000 times, which is 1.5 to 5 times more than the lead-acid battery. This greatly reduces the cost of using lithium batteries, extends the service life, and improves the convenience of use. It has a wide range of charging efficacy. This is a unique advantage of lithium batteries. When needed, the charging time can be controlled within 20min to 1h, and the charging efficiency can reach more than 84%. On the basis of further technological innovation, this feature will be better played.

At present, the energy density of lithium batteries is generally 200~260wh/g, and lead acid is generally 50~70wh/g, so the weight energy density of lithium batteries is 3~5 times that of lead acid, which means that in the case of the same capacity, lead-acid batteries are 3~5 times that of lithium batteries, so in the light weight of energy storage devices, lithium batteries occupy an absolute advantage.