NiMH battery is a new energy battery with higher capacity and cleaner than nickel compartment battery, which appears after nickel compartment battery. The materials used in NiMH batteries are very friendly to the environment. There is basically no pollution to the environment, what are the advantages of NiMH batteries besides higher capacity and no pollution? What are the disadvantages of NiMH batteries?
1, nickel-hydrogen batteries and lead-acid batteries and nickel-isolated batteries compared to the advantages of.
(1) higher energy density.
(2) discharge rate can be more than 15C.
(3) lead-acid batteries and nickel-cadmium batteries are polluting to the environment, while nickel-metal hydride batteries are relatively environmentally friendly, basically no pollution to the environment.
(4) Longer battery life than NiCd and lead-acid batteries.
(5) Nickel-cadmium batteries have a large memory effect, lead-acid batteries are easy to sulfide passivation, nickel-metal hydride battery memory effect is very small.
2, nickel-metal hydride batteries and lead-acid batteries and nickel-cadmium batteries compared to the disadvantages of.
(1) In terms of production and manufacturing costs, NiMH batteries are more expensive.
(2) The self-discharge performance is relatively poor, that is, the self-discharge current is relatively large.
(3) Due to the high energy density, the safety performance is worse than that of NiCd and lead-acid batteries.
3, nickel-metal hydride batteries and lithium-ion batteries compared to the advantages of
(1) In terms of manufacturing costs and technical maturity, NiMH batteries are lower in cost and more mature in technology.
(2) In terms of cell consistency, NiMH battery consistency is better controlled than lithium-ion batteries, with higher consistency.
(3) In terms of safety performance, due to the relatively low capacity density of NiMH batteries, they are not prone to safety accidents of smoke and explosion.
(4) In terms of raw materials, NiMH batteries have more abundant resources, and lithium-ion batteries are relatively scarce.
4, nickel-hydrogen batteries compared with lithium-ion batteries disadvantages
(1) in the cycle life, nickel-hydrogen batteries are shorter than lithium-ion batteries.
(2) in the energy density of nickel-hydrogen batteries is relatively low, in the range is relatively short.
(3) In terms of high current discharge, that is, multiplier discharge, lithium-ion batteries can achieve more than 45C discharge, while NiMH batteries can achieve about 15C.
(4) In terms of space utilization, NiMH batteries are fixed cylindrical, while Li-ion batteries can be soft-coated aluminum film, so they can be diversified in shape and make full use of the space in the battery compartment of the product.
(5) In terms of low temperature performance, the discharge performance of NiMH batteries is much worse than that of Li-ion batteries.
(6) in the fast charging performance, NiMH batteries are far worse than lithium-ion batteries, such as battery manufacturing lithium-ion batteries can achieve 3 to 5C fast charging, while NiMH batteries are better than 1C fast charging, that is, NiMH batteries charging time than lithium-ion batteries charging time is much longer.
The above is a simple overview of the advantages and disadvantages of NiMH batteries made by battery technology engineers who do battery R&D and manufacturing in batteries. In fact, the advantages and disadvantages of NiMH battery conversion comparison is to see with what type of battery to reflect the comparison, rather than simply their own nature comparison.
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