1. LG18650 4.1V voltage is generally 2000-2500mA.
2. Lithium battery is a primary battery that uses lithium metal or lithium alloy as the negative electrode material and uses non-aqueous electrolyte solution. It is different from rechargeable batteries, lithium-ion batteries and lithium-ion. polymer batteries. The inventor of lithium batteries is Edison. Since the chemical properties of lithium metal are very active, the processing, storage and use of lithium metal are subject to very high environmental requirements. Therefore, lithium batteries have not been used for a long time. With the development of microelectronic technology in the late 20th century, the number of miniaturized devices has increased day by day, placing high demands on power supplies. Lithium batteries then entered the phase of large-scale practical use.shel.
Both are domestic Tesla battery suppliers, which is better, CATL or LG Chem?
18650 battery brands include LG HG2, Samsung 25R, Sony VTC4, LISHEN, BYD, BAK, strong> strong>etc. ?
The theoretical battery life of the 18650 is 1,000 charge cycles. Due to their large capacity per unit density, most of them are used in laptop batteries. In addition, 18650 is widely used in various electronic fields due to its very good work stability.
Recommended brands:
1. LISHEN
Tianjin Lishen Battery Co., Ltd. is a main company with independent intellectual property. Rights Technical, a high-tech joint stock enterprise specializing in battery technical research, development, production and operations lithium-ion and power batteries. The company is located in Huayuan Industrial Zone, Binhai High-tech Zone, Tianjin, covering an area of 400,000 square meters. It was established on December 25, 1997, with registered capital of 1.25 billion RMB and total assets of 600 RMB. billion.
At present, the company has an annual production capacity of 500 million Ah of lithium-ion batteries, and its products include hundreds of models divided into four series: round, square , flexible polymer and plastic packaging, and power batteries. .
2. Recommendation: Sony VTC4 2100mAh or LG HD2 2000mAh
Both can provide high current, good capacity, good voltage and low voltage when working. , their performance is very close. HB6 and HB2 can easily discharge 30A, but they are rated lower due to their smaller capacity. They workalso at very low temperatures.
3. Recommendation: LG HB6 1500mAh
HB6 and HB2 have relatively low capacities. These are the only batteries that can be used for extremely high currents. and they are also available The battery with the lowest operating temperature. Although HB2 is also very good, but HB6 has slightly lower temperature, slightly larger capacity and slightly higher voltage, so it is the champion of the 30A and above group.
4. BYD
BYD was founded in 1995 and is listed on the Hong Kong Stock Exchange and the Shenzhen Stock Exchange, respectively. It is mainly active in the securities sector. secondary rechargeable battery production business, the IT industry mainly includes mobile phones, computer parts and assembly, and the automobile industry, includingincluding traditional fuel vehicles and new energy vehicles, and uses its own technological advantages to actively develop solar power plants and energy storage. power plants, LED and electric forklifts, including other new energy products.
5. BAK
BAK Battery Co., Ltd. was established in 2001 with a registered capital of 660 million yuan, equivalent to 82.6 million US dollars. It was listed on the NASDAQ in the United States on May 31, 2018 and is a listed company in the United States.
It is a high-tech enterprise integrating R&D, production and sales of lithium-ion batteries. The newly built BAK Industrial Park covers an area of 360,000 square meters and has more than 8,000 registered employees. The daily output of lithium batteries reaches 1.5 million units, making it one of the largest professional manufacturers oflithium batteries in the world.
Key points for purchase:
18650 batteries generally have the advantages of large capacity, long life, high safety performance and wide usage range. When buying an 18650 battery, you usually need to understand its capacity, current, voltage, working temperature, etc., and then choose the 18650 battery you like.
The stable situation of “one super, many strong” in the field of electric batteries will be broken in 2020.
Before 2020, CATL had always dominated the pack and held first place in terms of global installed capacity. But in the first half of 2020, LG Chem knocked CATL from the top spot, and then CATL counterattacked again. While the two have repeatedly competed for position, giants such as BYD and Panasonic have been left behind. A situation oftwo heroes competing for hegemony was formed.
According to data released by SNE Research in South Korea on October 5, the global installed capacity of power batteries in August was 10.8 GWh. CATL ranked first in the world with an installed capacity of 2.8 GWh, with a market. share of 25.9%. LG Chem ranks second, accounting for 22.2% of the global installed market share with 2.4 GWh of installed capacity.
However, judging from the cumulative installed capacity throughout the year, LG Chem is slightly better than CATL.
Betting on the European market and entering Tesla's supply chain are the keys to overtaking LG Chem.
Before 2020, China's new energy vehicle market was the largest in the world. However, this year, due to the increase in new energy subsidies in Europe, fuel vehicle giants such as Volkswagen and BMW are stepping down.t turned to the new energy market, and the European new energy vehicle market has experienced explosive growth. Relevant data shows that in the first half of 2020, EuropeThe sales of new energy vehicles amounted to 403,000 units, an increase of 52% year-on-year. Data from the China Automobile Association shows that domestic sales of new energy vehicles fell 44 percent year-on-year to 335,000 units in the first half of this year.
As early as 2009, LG Chem entered into a strategic partnership with Hyundai and Kia. Major users also include General Motors, Renault, Volvo, etc. In the initial stage of global power batteries, LG Chem entered the supply chain of major automobile manufacturers such as Daimler and Volkswagen. It has cooperated with 13 of the world's top 20 automobile brands, including almost all major manufacturers in the world.European tomobiles. In terms of customer structure, the share of American, European, Japanese and Korean product offerings is also relatively balanced.
In addition to factors related to the European new energy market, the decision to enter Tesla's supply chain also provided important assistance to LG Chem's counterattack. In the SNE Research report, it attributes the reason for LG Chem's rise to the top against the trend to its good performance in Chinese-made Tesla Model 3, Renault ZOE and Audi e-tron.
LG Chem's "fire in the backyard", CATL shifts from offense to defense.
As the domestic new energy vehicle market gradually recovers in the second half, CATL's installed capacity increased. According to data from the China Automobile Manufacturers Association, CATL's cumulative installed capacity reached 19.8 GWh as of Jan.last to October this year, accounting for 49.4% of the domestic market share, while LG Chem's domestic market share is only 8.1%.
In addition, as CATL gradually begins to supply lithium iron phosphate batteries to Tesla in the second half of this year, it will inevitably affect Tesla's orders, the biggest advantage of LG Chem on the Chinese market. According to information from China Energy Storage Network, CATL's current supply to domestic Tesla has exceeded that of LG Chem.
Additionally, coupled with LG Chem's power battery issues (due to manufacturing defects in high-voltage batteries that can cause short circuits and fire hazards), this has caused d Huge damage to LG Chem's brand image. car manufacturers and the reputation of battery manufacturers. If there is no material development in the electrochemical field in the short term, the products ofe LG Chem will continue to present hidden dangers and be questioned by the industry.
Technology development, security for the purpose
In terms of technology, previously, in an interview with Bloomberg, Zeng Yuqun, the founder of CATL, said that he would launch a product which can be used for 16 years and has a battery life of more than 2 million kilometers. The current warranty period of power batteries is approximately 8 years or 240,000 kilometers. CATL will increase the life of power batteries several times.
Zeng Yuqun also said that CATL is conducting research on high-voltage batteries without cobalt and without precious metals, and solid-state batteries are also one of CATL's R&D priorities.
Compared to CATL's overall structure, LG Chem's R&D focuses more on its advantages in electrochemical materials
In April this year, LGChem said it would invest about 65 billion won (about RMB 380 million) to increase its Yeosu plant's carbon nanotube (CNT) production capacity to 12,000 tons, a material that has the potential to compete with copper and diamond. A new generation material with the same electrical and thermal conductivity as stone and 100 times more resistant than steel.
This type of battery can not only maintain the high energy density of ternary lithium batteries, but also increase the stability of the battery and further reduce costs.
In addition, Xin Xuezhe, CEO of LG Chem, said at the 2019 Global New Energy Vehicle Conference that LG Chem will be committed to developing solid-state lithium-ion batteries, which means that solid-state batteries will also become the key development direction of LG Chem one.
In terms of technical reserves, CATLand LG Chem are currently doing their best to improve ternary lithium battery technology, while continuing to explore future battery technologies.
No matter how technology evolves, product safety and market acceptance are the keys to the electric battery industry.
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