As the core of new energy vehicles, batteries are related to the use and endurance of vehicles. According to the types of existing car batteries, they are divided into lead-acid batteries and lithium batteries. Currently, new energy vehicles use lithium batteries as vehicles. Power battery. The use of lead-acid batteries is basically low-speed electric vehicles, such as scooters in the old age, and for new energy vehicles, which is more cost-effective to use lead-acid batteries or lithium batteries?
According to the characteristics of the battery, it is natural that the cost-effectiveness of the lithium battery is higher. First of all, the lithium battery is the battery cell composed of metal elements, which relies on lithium ions to move between the positive and negative electrodes to work. According to the working principle of lithium batteries, the average voltage of lithium batteries is higher. The nominal voltage of lithium batteries is 3.6V. For lead-acid batteries, the nominal voltage of lead-acid batteries is only about 2.0V. In terms of the structure of the battery, there is a difference in electrode potential between lithium and lead. The charging and discharging efficiency of lithium batteries is higher.
Furthermore, there are also differences in energy density and packaging for these two batteries. These factors have led to a big difference between lithium batteries and lead-acid batteries. According to new energy vehicles, they are high-speed vehicles and require a lot of power. For the same 48V80Ah battery, the weight of lithium batteries can be controlled at about 5 to 10Kg, while the weight of lead-acid batteries is basically for lithium batteries. It’s two to three times as much.
In terms of battery weight, lithium batteries are lighter in weight and smaller in size, which will bring huge differences in terms of vehicle battery life, handling, and so on. Generally speaking, for lithium-ion batteries, lithium batteries have many advantages, such as lightness, long service life, and fast charging speed. It is determined that it is more suitable as a power battery for new energy vehicles than lead-acid batteries.