NI-MH battery

Due to the use of a large number of nickel-cadmium batteries (Ni-Cd) in the cadmium is toxic, so that the disposal of waste batteries is complicated, the environment is polluted, so it will gradually be made of hydrogen storage alloy nickel-metal hydride rechargeable batteries (Ni-MH) to replace.

In terms of battery power, the same size of nickel-metal hydride rechargeable batteries than nickel-cadmium batteries about 1.5 to 2 times higher, and no cadmium pollution, has been widely used in mobile communications, notebook computers and other small portable electronic equipment.

Higher-capacity nickel-metal hydride batteries have begun to be used in gasoline/electric hybrid vehicles, the use of nickel-metal hydride batteries can be quickly charged and discharged process, when the car is running at high speeds, generators can be stored in the car’s nickel-metal hydride batteries, when the car is running at low speeds, usually consume a lot of gasoline than the high-speed state, so in order to save gasoline, at this time, can be used to drive the electric motor of the nickel-metal hydride batteries in place of the internal combustion engine work. In order to save gasoline, the on-board nickel-metal hydride battery can be used to drive the electric motor instead of the internal combustion engine, which not only ensures the normal driving of the car, but also saves a lot of gasoline, therefore, hybrid cars have a greater market potential compared with the traditional sense of the car, and countries around the world are stepping up research in this area.

The development history of NiMH battery can be divided into the following stages:

Initial stage (early 1990s to mid-2000s): nickel-metal hydride battery technology is gradually maturing, and commercial applications are gradually expanding. They are mainly used in small portable consumer electronic products such as cordless phones, notebook computers, digital cameras and portable audio devices.

Mid-stage (mid-2000s to early 2010s): With the development of mobile Internet and the popularization of smart terminal devices such as smart phones and tablet PCs, NiMH batteries are more widely used. At the same time, the performance of NiMH batteries has also been further improved, with increasing energy density and cycle life.

Recent stage (mid-2010s to present): Nickel-metal hydride batteries have become one of the main power batteries for electric vehicles and hybrid vehicles. With the continuous progress of technology, the energy density of NiMH batteries has been continuously improved, and the safety and cycle life have also been further improved. Meanwhile, with the increasing global awareness of environmental protection, NiMH batteries are also favored for their non-polluting, safe and stable features.