Teach you how to improve lithium battery capacity and charging speed

2022/04/08

  Author :Iflowpower – Portable Power Station Supplier

Lithium-ion battery manufacturers teach you how to improve lithium-ion battery capacity and charging speed. Lithium-ion battery capacity and charging rate are two primary battery limits, improve the high capacity and charging rate of lithium-ion batteries, and the core problem that the lithium ion battery industry has always attached importance. Many lithium-ion battery manufacturers use it as a product, and have launched a variety of new energy lithium-ion batteries.

How to increase the capacity of lithium-ion batteries? Improve the energy density of lithium-ion batteries (limited to capacity batteries), is the first key to designing batteries. It is not enough capacity, the unit price is low, the cycle is good, the safety is high, and the battery made may also be unattended. The capacity of the lithium-ion battery is important to the mass and ratio of the positive and negative active materials, and the positive and negative electrode materials determine the energy density of the battery.

For positive and negative active substances, it is the most direct method for improving the capacity density of lithium ion battery. Important directions include: 1 Use gram to play a larger material: such as a lithium material, high voltage trimeterial material, high voltage cobalt, binary material, etc., soft carbon hard carbon, silicon-based compound, etc.

Wait. 2 use positive and negative materials with larger density. 3 Active substances with adhesive, conductive conductivity: This can reduce the adhesive, the content of the conductive agent in the dressing, thereby increasing the capacity of the unit mass dressing can be exported; additional binder, the amount of electrical electronist agent decreases It is also possible to improve the compaction performance of material active substances.

4 Use a thickness rebound smaller material: After the lithium ion battery is cycled, the thickness will have a certain rebound; the reserved rebound thickness is reserved when the circulation is reserved; when the thickness rebound is used, the material is used (according to the current seen Look, these materials are also materials that are good in cycle performance), then the province can rebound to reserve the design thickness of the spatial transfer to the electrical cell, thereby the design capacity of the battery. 5 Select the material system with better performance: a single "good positive", "good negative" and "good electrolyte" together, does not guarantee "good battery". The material is combined with a well-known material, not only reduces the cycle performance of the lithium-ion battery, but also affects the magnification performance and even the positive and negative electrode; the same, when the material is matched, the gram is played, cycles, Performance and other performance may be improved.

How to increase the charging speed of lithium-ion batteries? The essence of the fast charge and discharge of lithium-ion batteries is that lithium ions can quickly escape between positive and negative materials. Battery material properties, process design, charge and discharge system will affect large current charging performance. Regarding the lithium-ion battery, the charging method has a large performance, and the reasonable charging method can extend the life of the lithium-ion battery and improve charging efficiency.

1. Improve the method of comparing the charging speed of the lithium ion battery is to cover the lithium ion battery positive electrode material, such as the LFP itself is not very good, and it can be improved after surface covering carbon material or other material. Its conductivity is conducive to improving the fast charging performance of the battery.

2. Negative electrode materials for lithium ion batteries include carbon materials, lithium titanate, and other new materials. With regard to the LTO, itself belongs to the "zero-resistant" oxygen-containing negative electrode material, which does not appear in the battery, and the combination of lithium ions is stronger, which can meet the requirements of fast rechargement.

Some people say that the lithium-ion battery is charging is like pouring the beer, the speed is fast, the speed is faster, but there are many foams. The slow, slow speed, but more beer, very real. The fast charge is saved while the charging time will also have a big damage to the battery itself.

So in general, in the case of no time, we recommend trying to use slow charge, which is conducive to extending the battery life, and lithium-ion battery is safer.

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