A brief analysis of the basic structure and advantages of lithium-ion batteries

Basic Structure and Advantages of Lithium-ion Battery

1. Basic Structure of Lithium-ion Battery

The advantage of lithium-ion batteries is that they are higher than energy and are currently the most powerful batteries. In 1995, Sony Corporation successfully developed a lithium-ion battery for electric bicycles. Its total hair is divided into two types: one is a high-performance lithium-ion battery, and the other is a plurality of monomers in Series enough to plan that battery module, but its output power is 2.7 times the highest energy type. Become a high-power lithium ion battery. Lithium is the lightest metal in the world. When it constitutes a battery, the output voltage is nearly 4.2 V. The positive polar active substance of the lithium-ion battery is lithium cobalt acid, and the negative active substance is carbon. The electrolyte contained in the battery and diaphragm is a polymeric object electrolyte. In order to ensure the safety of lithium ion battery packs and at the same time to meet the required performance, the following developments have been made for lithium ion batteries:

(1) Change the carbon of the negative material to graphite to make the discharge voltage more stable.

(2) The manufacturing method of negative plates has been improved so that the active material reaches a high filling density.

(3) Improve the type and concentration of electrolytes so that they can inhibit the stratification of thin aluminum sheets for a long time, and improve the performance of batteries.

(4) The leakproof performance is improved by the optimal ratio of polymer to solute.

2. The Advantages of Lithium-ion Battery

The main advantages of lithium-ion batteries are: higher than energy, higher than power, small self-discharge, no memory effect, good cycling characteristics, rapid discharge and high efficiency. The working temperature range is wide and there is no environmental pollution. The shape of the lithium ion battery is high in degree, thin in type, and light in weight. This is due to the use of aluminum as the base material, PET film for the outer layer, and polyacrylate film for the inner layer. The independently developed adhesion method is used between various materials. Improve electrolytic liquid resistance, While maintaining its own strength. Therefore, lithium-ion batteries are expected to enter the best power supply in the 21st century. It is expected that during the period 2007-2012, lithium ion batteries will be developed one step at a time. Currently, lithium ion battery electric bicycle products have also been sold.

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