Features Overview of Rechargeable NiMH Batteries
High energy density, Low self-discharge rate, No memory effect,
Environmentally friendly, High charging efficiency, Strong
temperature adaptability, Long cycle life, Relatively low cost.
Since the cadmium in the widely used nickel-cadmium batteries
(Ni-Cd) is toxic, the disposal of waste batteries is complicated
and the environment is polluted, so it will gradually be replaced
by nickel-metal hydride rechargeable batteries (Ni-MH) made of
hydrogen storage alloys.
In terms of battery power, the power of nickel-metal hydride
rechargeable batteries of the same size is about 1.5 to 2 times
higher than that of nickel-cadmium batteries, and there is no
cadmium pollution. It has been widely used in various small
portable electronic devices such as mobile communications and
notebook computers. Larger capacity nickel-metal hydride batteries
have begun to be used in gasoline/electric hybrid vehicles. The use
of nickel-metal hydride batteries can quickly charge and discharge.
When the car is running at high speed, the electricity generated by
the generator can be stored in the on-board nickel-metal hydride
battery. When the car is running at a low speed, it usually
consumes more gasoline than the high-speed driving state.
Therefore, in order to save gasoline, the on-board nickel-metal
hydride battery can be used to drive the electric motor to replace
the internal combustion engine. This not only ensures the normal
driving of the car, but also saves a lot of gasoline. Therefore,
hybrid vehicles have greater market potential than traditional
cars, and countries around the world are stepping up research in
this area.
Applications of Rechargeable NiMH Batteries
NI-MH battery is widely used in many fields. Because of its high
energy density and stable performance, NI-MH Battery has been
widely used in electric vehicles, hybrid vehicles, unmanned aerial
vehicles, mobile electronic devices and other fields. In addition,
NI-MH batteries are also used in energy storage systems, power
tools and military fields. With the development of technology and
the decrease of cost, the application prospect of NI-MH battery in
the field of renewable energy is more and more broad.
