Classification of lithium batteries
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2020/12/19 14:32:21
What kind of lithium battery have?
First, according to the internal material lithium batteries usually divided into two categories
Lithium metal battery: Lithium metal battery is generally used manganese dioxide as the positive electrode material, lithium metal or its alloy metal as the negative electrode material, using a non-aqueous electrolyte solution of the battery.
Lithium ion battery: Lithium ion battery is generally a battery with lithium alloy metal oxide as the positive electrode material, graphite as the negative electrode material, and non-aqueous electrolyte.
Although lithium-metal batteries have a high energy density, they can theoretically reach 3, 860 watts per kilogram.However, due to its unstable nature and cannot be charged, it cannot be used as a power battery for repeated use.Lithium ion battery has been developed as the main power battery due to its ability of repeated charging.However, due to its different elements, the properties of the composed anode materials are very different in various aspects, which leads to more disputes on the anode material route in the industry.
Two, divide according to use
The first is digital lithium battery, is our daily use of mobile phones, tablets, mobile power and so on, these are digital battery.
The second kind is the power lithium battery, is tesla, BYD some new energy electric vehicles, as well as unmanned aerial vehicle and other products used by the battery, these batteries require a large instantaneous current, digital batteries can not meet the instant large current, so this is also called a high multiplier battery, the price is more expensive than digital batteries.
Three, according to shell material cent
The first type, the steel case battery, as the name implies, is made of steel.
The second type, aluminum-encased battery, is similarly aluminum-encased.
The third type, polymer lithium battery, the case is a polymer material, mostly silver, a few manufacturers do is black, the industry has become black skin.
Four, divide according to shape
First, cylindrical batteries, which are used a lot, like 18650, 26650, and so on, which are used in general combinations, which are less commonly used in digital products, like early laptops, which are generally 8 18650, portable power supplies, one to five or six combinations, and tesla's more than 7,000 18650 series and parallel combinations.
Second, square batteries, which are mostly polymer batteries because they're very stretchy and can do a lot of things, and you can change the length and the width and the height, which are used in most digital products these days.
The third type, profile-shaped battery, is some battery with strange shapes. According to the demand of the product, the battery should be matched with the shape. For example, the popular smart wearable products, such as the smart bracelet, are circular, so the battery is also made into a circular shape.
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