Analysis of flow battery technology -Lithium - Ion Battery Equipment

Analysis of flow battery technology -Lithium - Ion Battery Equipment

1. Analysis of flow battery
Recently, nanoFLOWCELL, an electric vehicle brand from Liechtenstein, announced the new QUANT48Volt concept sports car, using the latest low-voltage flow battery technology, the maximum power will reach 762 horsepower, the maximum speed of 300km/h, 0-100km/h acceleration 2.4s, the maximum cruising range or Over 1000km.

I believe everyone is used to this kind of news, but in fact, for us ordinary consumers, this kind of "surreal concept car" is still far away from us, and the most important thing is the price... According to the news, The future price of this car is as high as RMB 10 million. However, this news is mentioned because the concept car uses an uncommon "flow battery".(Lithium - Ion Battery Equipment)

The most common types of batteries for electric vehicles are lithium-ion batteries, nickel-metal hydride batteries, etc. (of course, there are many small categories, so I won’t mention them one by one). As for flow batteries, the brand was first introduced in 2014. During the period, concept products were launched, and the Geneva Motor Show, which opened in March, will bring the display of real cars. The author will introduce to you what a flow battery is... and whether the flow battery will be able to be used in the future. become the mainstream driving method of electric vehicles.

flow battery

Strictly speaking, flow batteries belong to "liquid" batteries, which do not belong to solid-state batteries, which is also known from the name. So what exactly is a flow battery?

In fact, flow batteries were not used as battery systems for electric vehicles at first. Japan used flow batteries for power plant peak regulation and wind energy storage facilities, which is enough to prove the power of flow batteries.

Of course, if the large reserve of flow batteries is considered an advantage, it can be said to be both joyful and unlucky when used in pure electric vehicles. If the reserve is large, the natural volume will be large, and for a car, a large-volume battery is not suitable for loading a car, which is the contradiction. (But according to the news, the concept car of the nanoFLOWCELL brand mentioned earlier is to develop a high-density flow battery, which will be introduced in detail below)

2. Advantages of flow batteries
In fact, the biggest difference between a flow battery and an ordinary lithium-ion battery pure electric vehicle is that the flow battery acts as an "engine" in the overall structure of the vehicle, rather than our common energy storage mechanism. The positive and negative electrolyte tanks continuously supply fuel to the flow battery, and a redox reaction occurs in the membrane, resulting in an electric current.

Having said so much, everyone must be most concerned about its advantages, which is the so-called advantages of flow batteries compared with lithium-ion batteries:

●Rated power and rated energy are independent, the power depends on the battery stack, and the energy depends on the electrolyte. The amount of electrolyte can be added at will to achieve the purpose of adding battery capacity.

●Battery has unlimited shelf life and long storage life. The electrolyte is recycled, and there is no deterioration problem, but after long-term use, the resistance of the battery diaphragm increases.

●It can be recharged in an instant by replacing the electrolyte.



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