Liquid lithium ion battery and lithium ion battery

Source: 2020 - 03 - 23 14:45 hits: time to introduce liquid lithium ion battery and lithium ion in the application of lithium batteries we've heard a lot of things about mobile phone use lithium battery, but how they are classified as such? In fact, in the field of electronics, lithium-ion batteries generally have a liquid lithium ion battery and lithium ion battery two * ( 18650 refers to 18 mm diameter, length is 65 mm cylindrical batteries. Although most of the 18650 is liquid lithium on the market, but any claims polymer lithium safer than 18650 statement is wrong. What's the difference between them? The first requirement is that both working principle is the same, both are embedded by lithium ion, stripping of charging and discharging process is complete, including lithium ion embedded negative charge, lithium ion discharge from the cathode stripping. As can be seen from the above, the lithium battery includes three basic elements: the positive and negative, and the electrolyte ( The material between the two phases) 。 Of course, there is a barrier to prevent direct contact between the positive and negative electrodes. Liquid lithium ion battery and lithium ion battery is the main difference between this 1. Data differences: polymer lithium battery should be used at least one of these three basic elements of polymer materials, such as electrolyte solution is strange things, such as polyacrylic acid, methyl acrylic acid. 2. Different electrolyte form: liquid lithium ion battery mainly used liquid + conductive salt, organic solvent and polymer lithium battery with colloid/solid to replace these electrolytes ( The specific composition see battery model) 。 Each of them have what fantastic? Simple comparison/liquid lithium polymer lithium battery lithium polymer lithium battery energy density ( Wh / L) 1. The higher energy density, energy density, the greater the capacity of unit volume. By improving the data/anode thickness and clearance, polymer lithium battery energy density of wh/L + 600. 2. Set system: lithium polymer batteries in shape is more simple, thin, and it does not need to use metal maintenance shell to package, so it is easier to make various shapes. 3. Weight: the form has been clearly indicated. 4. Safety: lithium-ion batteries in extreme circumstances ( Such as overcharge/high temperature) , serious will happen chemical reaction, in a large amount of gas, liquid lithium electricity at present because the package of metal shell, when the internal pressure is very big shell exploded, broken and polymer lithium battery, because only choose packing aluminium film ( Or plastic shell) , only slightly higher than the internal pressure expansion may break, won't cause explosion. But it is worth noting that the liquid lithium and lithium polymer can be burning at the poles. 5. Capital: in addition to material capital in polymer lithium ion battery is higher than the density of its liquid lithium electricity, due to a higher degree of polymer lithium ion battery can be customized, so will happen in the process of planning, to produce more, such as a variety of customized jigs and fixtures, test equipment, and so on, lead to lithium polymer battery capital than liquid lithium electricity shape, rules and regulations.