Is the price of lithium battery reasonable?

People often have expensive or cheaper evaluations when buying digital cameras and mobile phone batteries. Currently, portable consumer electronics products are often rechargeable lithium batteries. In other words, the evaluation of the batteries: Is the lithium battery price reasonable or unreasonable? That starts with the price component of lithium batteries.

In the lithium battery manufacturer, according to the proportion of different factors in the formation of lithium battery prices, the price structure of lithium batteries can be summarized into three factors: cell, power management system, and packaging.

First, the battery: This is the most important factor in the price structure of lithium batteries. In general, lithium batteries vary in brand, material and capacity.

1. For the same type of lithium battery, the price of imported brand batteries is higher than domestic brands, such as Sanyo and Panasonic in Japan, and LG and Samsung in South Korea are higher than domestic power, BAK, etc.

2. There is also a material problem affecting the price of lithium batteries. Among the four components of the lithium battery, the raw materials of the negative electrode, the electrolyte and the separator are basically the same, and the difference in the manufacturing cost of the battery is the use of the positive electrode material, in addition to the lithium iron phosphate used in the power car, the common lithium battery positive electrode. The materials are lithium cobaltate, lithium manganate and ternary materials, of which ternary materials are the most cost-effective.

3. Capacity: This is the same as all rechargeable batteries. The larger the capacity is, the higher the price of the lithium battery.

Second, the power management system: generally referred to as the protection board, the main part is the protection IC, according to the characteristics of the lithium battery, each lithium battery or lithium battery pack has a protection board, but the price of the intelligent protection board that provides a strong protection function is high Much more.

Third, the package: is the problem of the outer packaging, which includes the outer casing and some accessories (such as wires), because the outer casing can be divided into two kinds of aluminum shell and steel shell, the cost of the steel shell is higher, so, in other conditions In the case, the price of the steel-clad lithium battery is higher.

Knowing the composition of the above lithium battery price, you will understand that the price of lithium batteries is only a relative problem. In addition, there is a non-rechargeable lithium metal battery or lithium primary battery, which is also a lithium battery, but people generally call it a button battery (because its shape is a button shape), the price difference of such a lithium battery is often the brand effect.

The page contains the contents of the machine translation.