-(3)What are the advantages of lithium iron phosphate batteries? Why do pure electric vehicles choose lithium iron phosphate batteries?

(3)What are the advantages of lithium iron phosphate batteries? Why do pure electric vehicles choose lithium iron phosphate batteries?
author:enerbyte source:本站 click330 Release date: 2023-09-08 11:16:01
abstract:
Nickel hydrogen batteries are a relatively unfamiliar type of battery, and currently there are almost no models equipped with such batteries except for Toyota's models. Nickel hydrogen batteries are also a type of battery with good performance. Nickel hydrogen batteries...

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Nickel hydrogen batteries are a relatively unfamiliar type of battery, and currently there are almost no models equipped with such batteries except for Toyota's models.

Nickel hydrogen batteries are also a type of battery with good performance. Nickel hydrogen batteries are divided into high-voltage nickel hydrogen batteries and low-voltage nickel hydrogen batteries. The positive active substance is Ni (OH) 2, and the negative active substance is metal hydride, also known as hydrogen storage alloy. The new energy vehicles we often come into contact with use low-voltage nickel hydrogen batteries.

Nickel hydrogen battery

In fact, as early as the 1990s, nickel hydrogen batteries began to enter people's vision. The most well-known Toyota Prius is a representative model equipped with nickel hydrogen batteries, and Toyota has also been persistent in using nickel hydrogen batteries. To this day, a large number of Toyota's new energy vehicles still use such batteries, such as the Corolla dual engine, Camry dual engine, Prius, and so on.

In terms of energy density, its performance is not significantly different from that of ordinary lithium-ion batteries. However, due to the single cell voltage of the battery being only 1.2V, which is one-third of that of lithium-ion batteries, the volume of its battery pack is much larger than that of lithium-ion batteries when the demand voltage is constant, which is also an important disadvantage of nickel hydrogen batteries.

However, Toyota's insistence on using nickel hydrogen batteries is not entirely unreasonable. Once, there was an investigation conducted by American automotive media. After conducting inspections, they found that the first generation Prius, which used nickel hydrogen batteries, maintained the same level of fuel consumption and power performance as the new car after 10 years and 330000 kilometers of driving. There was no obvious decrease in battery capacity or performance, I believe that such excellent stability is also the reason why Toyota uses nickel hydrogen batteries.

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