Ni-MH batteries using nickel hydroxide as the positive electrode Laptop Battery 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 367759-001 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 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 PM579A 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 Ni-MH battery.
Ni-MH battery logo
According to IEC standard Ni-Cd Ni-MH battery from the five components identified
1. Battery Type KR identify nickel-cadmium batteries HF said that HR-type Pavilion DV4000(hp dv4000 battery) Ni-MH battery Ni-MH battery
2. Battery size information, including the diameter of a circular cell height square height width of the thickness of the battery with a slash between values separated by units of mm
3. Discharge characteristics, said symbol L suitable for the discharge current magnification in the 0.5C or less: M said that appropriate discharge current magnification in the 0.5-3.5C or less; H said that appropriate discharge current magnification in the 3.5-7.0C or less; X indicates that the battery can 7C-15C high-rate discharge current work under
4. High-temperature battery symbol expressed with the T
5. The battery Pavilion ZE2000(hp ze2000 battery) connecting piece, said: CF on behalf of non-connecting piece; HH series, said battery-pull-shaped connecting piece connecting piece used; HB said that the battery connected in series with a side by side with the connecting piece. For example, a square HF18/07/49 said nickel-metal hydride batteries, a width of 18mm, thickness 7mm, height 49mm; KRMT33/62HH said nickel-cadmium batteries, discharge rate in the 0.5C-3.5 between the high-temperature series of single cells, no connection film, diameter 33mm, height 62mm
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