Structure and use of Ni-Cd battery

Structure and use of Ni-Cd battery
Nickel-cadmium batteries (nickel-cadmium battery) Satellite A100 metal cadmium as negative electrode active material, nickel hydroxide positive electrode active material for alkaline batteries. Positive and negative electrode materials were filled in perforated strip attached to nickel (or nickel belt), the by slurry, rolling, sintering, chemical or pasted, drying, tabletting methods such as plate made; polyamide non-woven materials such as an isolation layer; with potassium hydroxide aqueous solution as electrolyte solution; electrode assembly through the coiling or laminated in plastic or nickel-plated steel inside.

Ni-Cd battery nominal voltage of 1.2V, a cylindrical enclosure (KR), button (KB), a square enclosed (KC) and many other types. Has a wide temperature range, long life cycle and storage, capable of higher current discharge characteristics, but there is "memory" effect, often a result of regularity caused by the improper use of electrical performance.

Ni-Cd batteries Satellite A10 battery expression: (-) Cd ︱ KOH (NaOH) ︱ NiOOH (+)

Cell reaction is:

Discharge: Cd + NiOOH + H2O → Ni (OH) 2 + Cd (OH) 2

Charging time: Ni (OH) 2 + Cd (OH) 2 → Cd + NiOOH + H2O

A large bag, and open-type nickel-cadmium batteries used in railway locomotives, mines, armored vehicles, aircraft engines, etc. to start or emergency power supply. Cylindrical sealed nickel-cadmium batteries for electric tools, portable electric shaving devices. Small button nickel-cadmium batteries are used in low current, low-discharge rate of the cordless phones, electric toys. As the nickel-cadmium battery waste pollution of the environment, the series of batteries will be gradually better performance nickel-metal hydride Portege 4000 batteries replaced.



Ni-MH batteries using nickel hydroxide as the positive electrode active material, hydrogen storage alloy as negative electrode active material, potassium hydroxide aqueous solution as electrolyte for the green batteries.

High-capacity Ni-MH battery type than the energy 60--100Wh/Kg, high-power type Ni-MH battery than the energy of 40--50Wh/Kg.

Ni-MH battery charging mode to constant current charging, according to the battery on the current acceptance of different currents can be used to charge the battery during charging the battery without the need to limit the voltage monomer, while fast charging can be achieved.

Ni-MH batteries due to high conductivity electrolyte, the battery internal resistance small, can adapt to high-current discharge, so it can be divided into a low magnification, the magnification and high magnification battery. For a larger power output requirements more appropriate to the occasion. Battery charging at high temperatures, the main difficulties is the large PA3591U-1BRS Ni-MH battery in a relatively high temperature, the side reaction of oxygen precipitation reaction will speed up, if there is a better cathode performance, the precipitation of oxygen in the cathode can be negative on the reduction, which to remove the battery inside the presses. By adjusting the formulation process, can effectively improve the battery charging efficiency at high temperatures can be achieved when the temperature of the fast charging. Ni-MH battery can be used in -20 ℃ relatively large current discharge, such as the 1C discharge, sufficient to meet the power output needs.

Ni-MH battery charge and discharge current of 0.5C below, and the depth of discharge limits at 80% or less, the battery life can reach more than 1000. While the magnification to 100% faster 1C full charge-discharge, the battery life can reach more than 500 times.

In fact, electric cars are now engaged in the development and industrialization of the few developed countries, particularly Japan and the United States, its main power battery is used PA3506U-1BRS Ni-MH battery.