Comparison of nickel-cadmium battery and lithium battery

Nickel-cadmium battery used as a traditional train

Advantage

1. High safety performance, can be overcharged or over-discharged

2. High temperature performance, the temperature range is -20 ° C ~ 60 ° C, within this range can be discharged.

3. Affordable, the number of cycles is about 500 times

Disadvantage

1. Low energy density.

2. Nickel cadmium is a heavy metal that pollutes the environment.

3. The memory effect of the nickel-cadmium battery, after repeated several times to maintain the low-capacity discharge, the battery will not work if a larger amount of discharge has to be made.

4. The battery needs regular maintenance, such as adding electrolyte.

5. The self-discharge rate is too large, and the nickel-cadmium battery is 15 to 30% (month).

Lithium battery

Advantage:

1. High security, not overcharge and over discharge, need to support BMS battery management system.

2. High temperature and low performance, the temperature range of -20 ° C ~ 60 ° C can also be used even -40 degrees can also be low rate discharge.

3. High energy density, the current technology is about three times that of nickel-cadmium batteries. The number of charge and discharge is 3,000 to 10,000 times.

4. Little impact on environmental pollution.

5. Free regular maintenance.

6. The self-discharge rate is small. The lithium battery is 2 to 5% (month).

Disadvantages:

The current procurement cost is higher than that of nickel-cadmium batteries. According to the development of the industry and the expansion of production capacity, there is room for continuous price reduction.

The page contains the contents of the machine translation.