The “952540 battery” should be a lithium battery, right? !
Generally, prismatic lithium battery models are usually expressed in dimensions. Like 952540, where:
95 - refers to a thickness of 9.5 mm;
25 - refers to a battery width of 25mm
40; --refers to the height of the battery is 40mm.
What is a lithium battery
Recently, the hurricane of new energy vehicles has become bigger and bigger. Not only the leader CATL launched a 15 billion yuan expansion project, Lithium. Battery giant Panasonic also officially announced that its 4680 battery is close to commercial maturity and plans to further expand its production capacity in Mexico.
In addition, Yiwei Lithium Energy also invested 30.521 billion yuan and 6.2 billion yuan respectively to build an R&D base andproduction of 152.61 GWh lithium batteries and systems in Jingmen, as well as a large 20 GWh cylindrical battery production line and Passenger Vehicle Auxiliary Facilities Project, square lithium iron battery production line 16 GWh phosphate and ancillary facilities project.
As the power source of new energy vehicles, the core of the battery undoubtedly occupies a key position, and its cost accounts for about one third of the entire vehicle. The advent of the "production expansion wave" and the mass production of 4,680 batteries were revealed, which undoubtedly fueled the enthusiasm for new energy vehicles.
Which 4680 battery suddenly caught fire?
The so-called 4680 is actually a summary of the battery size. 46 means that the diameter of the cylindrical battery is 46mm, and 80 means that the hheight of the battery is 80 mm. This is a new battery launched by Tesla during “Battery Day” last year. Compared with the 1865 and 2170 size cylindrical lithium batteries previously used by Tesla, the advantages of the 4680 battery are reflected in battery capacity, production cost and efficiency.
According to Musk, the new Type 4680 tipless battery will increase battery capacity by five times and increase cruising range by 16% while reducing costs. Additionally, resistance can be reduced through the "poleless lug" process, so that heat dissipation and flow issues can be resolved.
The reason for the increase in battery capacity is the increase in size. The 4680 battery has 5 times the capacity of the 2170 battery, and increasing the capacity naturally increases the cruising range. Improving the efficiency of the production and cost reduction are reflected in larger batteries. They are also used in 75 kWh electric vehicles. The older 1865 version requires about 7,100 batteries, the 2170 requires 4,400 batteries, and the newer 4680 battery only requires 4,400 batteries. 950 cells and less cells, the space utilization rate is improved at the same time, the time required for production and assembly is reduced, so that the efficiency of the group is greatly improved, this which also reduces the cost per kilowatt hour by 14%.
Battery factories compete for 4,680 large-scale models
Cylindrical batteries are widely used around the world. The car manufacturer used is Tesla. European automakers such as Daimler and Renault mainly use soft batteries, while domestic automakers mainly use bprismatic ateries. Battery selection and planning cannot be changed in a short time. If the 4680 battery is officially launched, the main customers in the short term will still be Tesla.
For now, Panasonic seems to have the upper hand in this competition. Panasonic is reportedly technically ready to mass produce Tesla 4680 batteries. The company is currently building a production line in Japan and will conduct trial production once the technology is completed and it will move into mass production. However, looking at the global industrial chain, Panasonic, CATL, LG New Energy, Yiwei Lithium Energy and other companies will be potential future partners of Tesla's 4680 battery.
Tesla just announced that it will gradually replace ternary lithium batteries with lithium iron phosphate batteries, which means that companies such as CATL and Yiwei Lithium Energy will still have a place in the competition for 4680 batteries. After all, 4680 is only one size, and 4680 brand lithium iron phosphate batteries are also possible, and can further reduce costs. Tesla will obviously not abandon this market.
It can also be seen from the current trends of major battery manufacturers that many players in the industrial chain are actively developing 4680 batteries. Take Yiwei Lithium Energy as an example. Its Jingmen Power energy storage battery industrial park, in which it invested 46.3 billion yuan, officially began construction, covering the entire lithium battery industrial chain and bringing together many industry leaders. lithium battery industry. At the kick-off event, Liu Jincheng, chairman of Yiwei Lithium Energy, made it clear that "this could be the first base of pproduction for mass production of 4680 and 4695 batteries in the world, and the batteries produced here will be equipped for the world."
In addition, the "20 large cylindrical battery production line project GWh and auxiliary facilities for passenger vehicles" of Yiwei Lithium Energy will inevitably include large cylindrical batteries such as 4680.
Many players in the industrial chain are expected to benefit
Some institutional reports have already pointed out that 4680 batteries are expected to accelerate the development of high-quality ternary batteries - nickel batteries and the use of silicon-containing anode materials The proportion will also be improved, and progress. and corresponding changes may occur in its shell manufacturing process, tab welding and other aspects
Specific to the industrial chain, analyst Sun Xiaoya.of Tianfeng Securities, pointed out that the 4680 battery will lead to an improvement in the ASP of the all-material system, among which silicon-based anodes, carbon nanotubes and LiFSI has incremental logic.
Currently in the relevant industrial chain, in terms of positive and negative electrode materials, Zhongwei Co., Ltd., Dangsheng Technology, Rongbai Technology, etc. deploy high nickel cathodes, and Beterui, Putelai, and Si-carbon anodes are present Shanshan Co., Ltd., etc., in terms of structural parts, Kodali, Slack, etc., in terms of equipment, Lianying Laser, Haimuxing, etc., these companies all have their place; in the competition for 4680 batteries.
In addition, companies such as Yiwei Lithium Energy, Kedali, Zhongwei Shares, China Baoan, Tiannai Technology, Tianci Materials and other companies also announced that the Office may continue to benefit in the future.
Lithium battery is the abbreviation of lithium-ion battery
Using lithium-oxygen compound as the positive electrode and negative electrode. material (graphite, etc.), a battery composed of an organic solvent dissolved in lithium salt (LiPF6, etc.) as the electrolyte.
Lithium batteries can be roughly divided into two categories: lithium metal batteries and lithium-ion batteries. Lithium-ion batteries do not contain metallic lithium and are rechargeable.
Lithium battery is short for lithium-ion battery. As a new type of energy storage battery, it gradually replaces the traditional lead-acid battery.
The most common batteries in daily life are cell phone batteries, electric vehicles and trams, and power tool batteries.
1. From appearance: cylindrical, square.
2.Of the shell material: steel shell, aluminum shell, plastic shell, aluminum plastic film (soft packaging).
3. According to energy density: capacity type and power type.
4. Separated from the electrolyte: liquid lithium-ion battery, solid (polymer) lithium-ion battery.
5. From the perspective of positive electrode materials: lithium cobalt oxide (C), lithium manganate (M), ternary lithium (N), and lithium iron phosphate (F).
The 18650 cylindrical battery is commonly used, which is a cylindrical battery with a diameter of 18 mm and a height of 65 mm.
Notes:
First, lithium-ion batteries can be seen everywhere in people's lives, in various portable electronic products, vehicle GPS, etc. Lithium-ion batteries have become the key to keeping these tools running. Keeping lithium-ion batteries properly charged and discharged can extend the life ofbattery life. Keeping the lithium-ion battery power between 10% and 90% is beneficial to protect the battery. This means that when charging batteries of digital products such as mobile phones and laptops, it is not necessary to reach the maximum value.
If digital products equipped with lithium-ion batteries are exposed to sunlight or stored in hot cars, it is best to keep these products turned off because if the operating temperature exceeds 60 degrees Celsius, the lithium battery -ion will accelerate aging. Lithium battery charging temperature range: 0 ~ 45 degrees Celsius, lithium battery discharge temperature range 0 ~ 60 degrees Celsius.
Second, if the cell phone battery needs to be charged every day, the reason may be that the battery is defective or it is time to "retire".
For propsFor laptop owners, it is better to remove the battery if it is plugged in for a long time (the high heat generated by the computer during use is not good for the laptop battery).
Third, under normal circumstances, 50% power is most conducive to the preservation of lithium-ion batteries.