What are the advantages and disadvantages of capacitive lithium batteries?
by:Vglory 2021-03-31
Lithium batteries and supercapacitors are two types of energy storage devices that are very widely used, and their principles, characteristics, and scope of use are very different, and each has its own strengths. Since its inception, graphene has been regarded as a revolutionary energy storage material because of its strong electrical conductivity. Graphene is a single atomic layer flat film composed of carbon atoms, with a thickness of only 0.34 nanometers, and the thickness of a single layer is equivalent to 1/150 thousandth of the diameter of a human hair. It is the lightest, thinnest and hardest nanomaterial known in the world. It has good light transmission and can be folded. Because there is only one layer of atoms, the movement of electrons is restricted to a plane, and graphene also has brand-new electrical properties. Graphene is the most conductive material in the world. Graphene composite conductive powder is added to the traditional mobile phone lithium battery, which improves the rate charge and discharge performance and cycle life of the battery. The core technology of the core technology of the capacitive lithium battery lies in the adoption of a comprehensive performance balance design idea, cleverly introducing a new graphene-based composite carbon material into the positive and negative electrodes of the capacitor battery, realizing the combination of a general supercapacitor and a high-energy battery. So it has the excellent performance of general supercapacitors and storage batteries. The use of capacitive lithium battery Graphene all-carbon capacitor battery is a kind of all-round new power source. It can handle the power problems of electric vehicles, and can also be used in surface ships, submarines, unmanned aerial vehicles, missiles and aerospace. In particular, its unique safety performance will have a profound impact on the development of the electric vehicle industry. Capacitive lithium batteries combine the advantages of lithium battery energy density and supercapacitor power density. According to the new national standard, the cycle life is more than 4000 times, and the operating temperature ranges from minus 30 degrees Celsius to minus 70 degrees Celsius. On the basis of ensuring a certain driving range, high-current fast charging and long cycle life can be realized. Capacitive lithium battery technology breaks through the new graphene all-carbon capacitor battery. The advantage of the new graphene full carbon capacitor battery is that it has a large power storage. It is converted from electrical energy into chemical energy and then converted into electrical energy for release. Its energy density has exceeded the current best lithium battery, and its power density is close Supercapacitors realize the internal combination of batteries and traditional capacitors in structure, and realize the advantages of both batteries and capacitors. Capacitive lithium battery performance advantages are safe and stable. The new type of graphene polycarbon capacitor battery can be short-circuited with a nail gun after overflowing, and there will be no reaction; it will not explode if it is burned on a fire. The charging speed is fast; the graphene polycarbon battery can be charged with a high current of 10C, and it only takes 6 minutes for a single block to charge, and hundreds of blocks are connected in series to charge, which can reach more than 95% in 10 minutes. The power density is high, up to 200W/KG~1000W/KG, which is equivalent to more than 3 times that of lithium batteries. The ultra-low temperature characteristics are good, and it can work in an environment of minus 30 degrees Celsius. 1. High-safety aluminum shell, with cross explosion-proof valve and butyl rubber head plug, the shell itself is low in strength, when the internal pressure and temperature of the battery rise, it can be opened at a lower temperature and pressure Safety measures, there is no hidden danger of explosion safety; and generally 18650, there is no distinct low-strength zone, it will burst when the internal temperature and pressure are higher, and it will be powerful. And because the temperature is very high at this time, it is easy to catch fire and cause additional damage; 2. Flexible size, size and capacity can be customized, and the quality is more guaranteed. Due to the fully automated processing, it has more advantages in terms of small-volume batteries. Traditional steel shell batteries are difficult to achieve small size, polymer soft-covered batteries, due to the later manual processes, it is difficult to ensure the consistency of the quality of the batteries when small-volume batteries are processed; 3. The internal resistance is as low as 15m , The innovative multi-point diamond riveting method of the guide pin and the pole piece brings extremely low internal resistance; and the general 18650 positive and negative electrodes have thin metal sheets connected to the pole piece and the electrode shell by welding, which has a high internal resistance; 4. The lower cost unit price is more competitive than polymer batteries. At the same time, it can be installed straight on the circuit board like an electrolytic capacitor, and the later installation is simple and cost-effective. Compared with traditional steel shell batteries that need nickel sheet welding, soft pack batteries need terminal wires to connect, which reduces labor and material costs; Statement: Some pictures and content of articles published on this site are from the Internet. If there is any infringement, please contact to delete it. A: What to pay attention to during the use of rack-mounted UPS lithium battery
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