The type and application of the battery

　　1. How to classify batteries?

　　The battery is divided into dry batteries, zinc manganese batteries, lithium batteries, disposable batteries, lead -acid batteries, chemical batteries, and other batteries. Among them, chemical batteries are also called secondary batteries, which are divided into nickel -cadmium batteries, nickel -metal hydride batteries, and lithium -ion batteries. Other batteries are divided into fuel cells, physical batteries, solar cells.

　　2. What is the development trend of batteries in the future?

　　In the next few years, the rechargeable battery will occupy a larger market share, and the market share of a battery will become smaller and smaller. Portable cameras, mobile and rope -free calls, laptop computers and multimedia equipment will need more and more. The rechargeable battery. The rechargeable battery is environmentally friendly, light and light, small energy, higher density, and other directions.

　　3. What are the advantages and disadvantages of recharging batteries?

　　The advantage of recharging batteries is that long service life is long, which can be charged more than 1,000 times. Even if the price is more expensive than a battery, from a long -term use point of view, it is very economical, and the load of the rechargeable battery is more load than it Most of the battery is high. However, the discharge voltage of ordinary nickel -cadmium nickel -hydride batteries is basically constant, and it is difficult to predict when the discharge is over. Therefore, this type of battery is generally not used in cameras, and lithium batteries can provide a longer use time for camera equipment. High -energy density, and the decrease in discharge voltage weakens with the deepening of discharge.

　　5. What are the advantages of nickel -metal hydride battery?

　　low cost

　　Good fast charge performance

　　Long cyclic life

　　Memoryless effect

　　Pollution -free green battery

　　The range of extensive temperature use

　　Good safety performance

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