Lithium-ion battery, nickel-hydrogen battery, lead-acid battery advantages and disadvantages

Lead-acid battery

The main advantage:

1. The raw materials are easy to obtain and the price is relatively low;

2. High rate discharge performance is good;

3, good temperature performance, can work in the environment of -40 ~ +60 ° C;

4, suitable for floating charge use, long service life, no memory effect;

5. The used batteries are easy to recycle, which is conducive to environmental protection.

Main disadvantages:

1, the specific energy is low, generally 30 ~ 40Wh / kg;

2, the service life is not as good as Cd/Ni battery;

3, the manufacturing process is easy to pollute the environment, must be equipped with three waste treatment equipment.

NIMH battery

The main advantage:

1. Compared with lead-acid batteries, the energy density is greatly improved, the weight energy density is 65Wh/kg, and the volumetric energy density is increased by 200Wh/L;

2. High power density, high current charge and discharge;

3. Good low temperature discharge characteristics;

4, cycle life (up to 1000 times);

5. Environmental protection and no pollution;

6. Technical comparison Lithium-ion battery is mature.

Main disadvantages:

1. The normal working temperature range is -15~40°C, and the high temperature performance is poor;

2, the working voltage is low, the working voltage range is 1.0 ~ 1.4V;

3, the price is more expensive than lead-acid batteries, nickel-metal hydride batteries, but the performance is worse than lithium-ion batteries.

Li-ion battery

The main advantage:

1. Higher specific energy;

2. The voltage platform is high;

3, good cycle performance;

4, no memory effect;

5, environmental protection, no pollution; currently is one of the best potential electric vehicle power battery.

Main disadvantages:

1) The battery cost is high. Mainly manifested in the high price of the positive electrode material LiCoO2

(Co has less resources) and it is difficult to purify the electrolyte system.

2) Can't discharge at high current. Due to the organic electrolyte system and other reasons, the internal resistance of the battery is relatively

Other types of batteries are large. Therefore, a smaller discharge current density is required, and the general discharge current is below 0.5 C, which is only suitable for small and medium-sized electrical appliances.

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