Lithium processing

Lithium battery franchise production should be investigated clearly, it is not practical to charge the franchise fee. General assembly and processing of power lithium battery packs only need to purchase related equipment and testing equipment to assemble and process lithium batteries. Technology is relatively easy, and many electric vehicles use lithium batteries. At present, many manufacturers of training technology sales equipment only need to buy equipment, and there is no charging fee for joining.

Are you referring to the lithium battery of electric vehicles? The country has already checked it out and announced that several of them have been detected; the lithium battery technology itself is mature, with many advantages and is becoming popular.

To be honest, this kind of joining is still not recommended.

This kind of franchise or investment should be of the lithium battery PACK or assembly nature, because the threshold is low, the input equipment is less, and the simple case is only easy to learn in series and parallel.

However, in the places of Shenzhen, Dongguan and other places, lithium battery assembly, PACK manufacturers, small and medium-sized, large-scale manufacturers, have been a lot of hair, many manufacturers have relatively weak business. And you processing this simple workshop-type processing factory, production, quality, management system is not perfect, and lithium batteries are dangerous goods, first, the sales prospects are still unknown, and second, if there is a safety accident, it is even more troublesome.

In addition, empathy, if the sales are really good, they have equipment, why not directly recruit the general workers to produce and sell one-stop, master all the profits, why should they go out?

Judging from the propaganda of these companies that have joined the company, it is undoubtedly a scam. It should be based on the franchise fee, low-cost equipment and high-priced equipment to sell money. The reasons are as follows:

1) Propaganda medium said that a group of 48V/12Ah lithium battery packs can have a profit of 300-500 yuan, which is impossible. 48V/12Ah is now less than 600 ex-factory price, and it is impossible for manufacturers to mass produce. With such high profits, how can hand-workshop production have such high profits? If there is such a high profit, why do these manufacturers have to join in, and it is not better to recruit employees to mass-produce their own money?

2) Lithium battery production now has mandatory national standards. The requirements for production process and testing are very high. The industrial and commercial departments may check the quality of the products. The workshop production cannot guarantee the quality of the products risk.

3) Lithium batteries are dangerous items. If they are not properly handled during processing and storage, they are prone to explosion and other problems. When the blood is not returned, it may cause casualties.

4) Now whether it is electric bicycle lithium battery, electric tricycle lithium battery, or charging treasure battery, there are at least a thousand large and small manufacturers in the Pearl River Delta region. The market is basically in a situation of oversupply. The competition is fierce and there is no promotion. The information written on the data is so broad.

5) If the manufacturer asks you to pay the initial fee and other fees to the other party's private account (the account name is not the company name but the personal name, even the name of the other person's legal person or financial controller), it is basically a fraud nature.

Dongguan Yunfan Electronic Technology Co., Ltd., with its strong development strength and mature experience, adopts imported cylindrical 18650 lithium battery, and also provides safe and reliable battery solutions for more and more customers with this demand. Yunfan Electronics is committed to providing customers with the safest large-capacity lithium battery, smart battery, Yunfan intelligent lithium battery, special lithium battery. For this reason, we carry out safety testing for each batch of products, each battery is covered by insurance company, underwriting. We are willing to be responsible for the safety of every battery.

What is the hottest graphene product in the past two years? Underwear, masks, black gold batteries, especially the graphene battery, that is, the black gold battery, is not a fire. Recently, Xiaobian has seen news that the graphene lithium battery project is ready for production, and the production capacity is not as large as it is, it is 1.5 billion watt-hours! Today, Xiaobian used this news to tell everyone about the controversy behind the graphene battery that is constantly being cut and confused.

1. What is graphene?

Let's first look at what exactly is graphene. In 2004, Gem and Novoselov of the University of Manchester in the United Kingdom stripped graphene from graphite flakes, and the two won the 2010 Nobel Prize in Physics. The graphene here is a honeycomb lattice two-dimensional atomic crystal composed of a single layer of carbon atoms, and has a theoretical thickness of only 0.34 nm. It has excellent electrical properties, electrical conductivity, barrier properties and the like, so that it is in the field of batteries. The application is favored by many people and is called the "king of materials."

The academic community has always had a common view on graphene, that is, the current cost of manufacturing graphene is too high and the technical aspects are not perfect. There are still great difficulties in industrial application. Even if companies now claim that new graphene products are available, graphene is often used as an additive in this product, and it is no exception in the battery field.

Professor Huang Xuejie, head of the Solid State Ionology Research Group at the Institute of Physics, Chinese Academy of Sciences, believes that adding a small amount of graphene to the positive electrode can increase the electronic conductance of the positive electrode and improve the discharge rate characteristics of the battery, but generally it is less than one percent. It is said that a lithium ion battery with a little graphene has become a graphene battery.

What's more, the current graphene battery is only added with some graphite sheet components called multilayer graphene. In theory, single-layer graphene has the best conductivity, and is used for short battery charging time, and the more layers, the worse the conductivity, and the longer the battery charging time. At present, few companies dare to claim that they use a single layer of graphene to make a battery, and more use only a mixture of graphene, specifically a small multilayer graphite microchip containing a small amount of graphene.

It is the rigorous research institutions that do not dare to use the graphene battery when publishing authoritative papers. In mid-December 2015, the research team of the Shanghai Institute of Ceramics of the Chinese Academy of Sciences issued a report on Science, which pointed out that it developed a high-performance supercapacitor electrode material, and some media praised: "The material has excellent electrochemical energy storage. Features, can be used as an electric vehicle's 'super battery', the biggest highlight of this battery is charging 7 minutes, driving 35 kilometers." Then the graphene battery concept was sizzled.

However, the official website of Shanghai Silicate Institute gave the news: "The research team led by Huang Fuqiang, a researcher at the Shanghai Institute of Ceramics, Chinese Academy of Sciences, collaborated with researchers from Peking University and the University of Pennsylvania to synthesize orderly holes (the meaning of mesopores) are new materials with less carbon." And the paper in the journal Science does not mention graphene, but carbon.

In the academic world, the current graphene battery is still a pseudo-concept, and the current graphene battery does not exist. There are dozens of listed companies in China that have laid out graphene power batteries. However, there are almost no products that can mass-produce installed products. And there is no graphene battery that can be produced on a large scale in the world.

Nowadays, many companies are speculating about this concept, and its gimmick is far more meaningful than practical value. The high specific surface area and other properties of the nanomaterials of the graphene material itself are not compatible with the current technical system of the lithium ion battery industry, so the application prospect is very slim. Therefore, the application of graphene on the battery is mainly combined with silicon in the negative electrode of the battery to replace the original graphite, so that it can absorb more charge, improve the conductivity of the battery, reduce the resistance of charge and discharge, and the performance improvement effect is only This is the limit. In fact, in the field of new energy batteries, the so-called subversive theory of graphene batteries has never been recognized by the industry. Although graphene can be used as a conductive agent to promote rapid charge and discharge of lithium batteries, theoretically, it can improve the rate performance. However, if the dispersion process is not in place and the mixing is uneven, it is still difficult to exert its effect.

According to the current development trend, graphene may be promising in terms of new flexible batteries, devices, displays, and catalysts. But in terms of batteries, it is not optimistic.

2. Graphene is too expensive, even if made of batteries, ordinary people cannot afford

In the application of lithium batteries, graphene plays a major role, one is a conductive agent, and the other is a lithium-incorporated material. In fact, both of these are in competition with traditional conductive carbon/graphite. "The question is coming. Do you know that conductive carbon/graphite is cheaper? It’s all about tons of sales. On the graphene that can be sold to the price of the day, the various materials used in lithium batteries are one ton. Tens of thousands, about 100,000 things, and every day bear the pressure to reduce prices the use of graphene is completely unrealistic." This is mainly because graphene is too expensive. One gram of thousands of prices, this is not something that ordinary companies can afford. A few years ago, the price of graphene was as high as 5,000 yuan per gram, far exceeding the price of gold. In addition, it is such a battery that is made, and consumers are also unbearable.

Recently, market analysts claim that the complete industrial chain of graphene products and high-efficiency battery projects in China has been formed. In fact, China's current graphene materials are in a critical period from laboratory to industrialization, and the maturity of production technology is not high. Due to factors such as the long application path of industrialization, the mass production of graphene has not been fully realized. Some people think that this process has not been realized, it is completely idiotic to say that our graphene battery can achieve large-scale industrial production.

Therefore, some sober and industry insiders believe that it is too early to say that China has produced a graphene battery.

The original declaration is unknown, and the original author is grateful. The copyright belongs to the original author. If it is infringed, please feel free to post the message. We must mark the name of the author or delete it later. Our platform is dedicated to good text push, platform graphic video is sourced from the network, does not represent the platform view, only for learning exchange reference.

The page contains the contents of the machine translation.