24V20AH powered lithium battery classification analysis

  • Recently, a lot of 24V20AH powered lithium battery has been issued with convertible bonds, so I want to do a carding about 24V20AH powered lithium battery.

    There are three uses for 24V20AH powered lithium batteries, new energy vehicles, energy storage, and consumer electronics, but although they are all 24V20AH powered lithium batteries, there are still some differences. The following is a more detailed classification. Interested partners may wish to spend a few minutes. Let's go and find out with 24V20AH powered lithium battery supplier Winshinepower.

    1. According to the positive electrode material: the difference between lithium cobalt oxide, lithium phosphate, and ternary iron lithium battery

    According to "Southwest Securities - Key Technical Details and Calculations of Ternary Materials", lithium cobalt oxide is the first-generation commercial cathode material, which has been gradually modified and improved in decades of development and can be considered as the most mature cathode for lithium-ion batteries. Material. Lithium cobalt oxide has the advantages of a high discharge platform, high specific capacity, good cycle performance, and a simple synthesis process. However, the material contains highly toxic cobalt elements, and the price is high, so it is difficult to guarantee safety when making large power batteries. Lithium cobalt oxide is still the best choice for a small lithium battery. At present, most of the 3C electronic batteries still use lithium cobalt oxide instead of ternary materials with a higher specific capacity, because the compaction density of lithium cobalt oxide materials is higher than that of ternary materials, that is, the lithium cobalt oxide can be accommodated in a unit volume. more. Lithium cobalt oxide has a place in small batteries that place more emphasis on bulk density.

    Lithium iron phosphate is one of the cathode materials that has attracted widespread attention. Its main features are that it does not contain harmful elements, has low cost, is very safe, and has a cycle life of up to 10,000 times. These characteristics make lithium iron phosphate materials quickly become a research hotspot. Iron phosphate lithium battery is also widely used in the field of electric vehicles. The disadvantages of lithium iron phosphate are also obvious, that is, the energy density is low, which is lower than that of lithium cobalt oxide and ternary batteries. Therefore, iron phosphate lithium battery is mainly used in electric buses and a small number of passenger cars.

    Ternary material is a common name for lithium nickel cobalt manganese oxide with a very similar structure to lithium cobalt oxide. This material can be balanced and regulated in terms of specific energy, cyclability, safety, and cost. Increasing nickel content will increase the capacity of the material, but will make the cycle performance worse; the presence of cobalt can make the material structure more stable, but too high a content will reduce the capacity; the presence of manganese can reduce cost, and improve safety performance, but too much content will reduce the capacity. High will destroy the layered structure of the material. Therefore, finding the proportional relationship between the three materials to optimize the overall performance is the focus of the research and development of ternary materials.

    In general, lithium cobalt oxide is suitable for small lithium batteries, iron phosphate lithium battery is safe, have a long life, and high-temperature resistance; ternary lithium battery is light in weight, has high charging efficiency, low-temperature resistance, so each has its own Features.

    24V20AH powered lithium batter

    2. According to the application field: the difference between energy storage batteries, power batteries, and consumer batteries

    The overall structure of the lithium battery is similar, which is composed of four parts: positive electrode material, negative electrode material, diaphragm, and electrolyte. The difference is mainly reflected in performance.

    Consumer lithium-ion batteries are mainly used in consumer electronic products such as mobile phones, portable computers, digital cameras, digital cameras, mobile power supplies, electric toys, etc., that is, lithium batteries and modules of the so-called "3C products". The main forms are divided into Cylindrical, square, soft packs, and batteries. Because the consumer lithium battery has high volume requirements and high energy density, lithium cobalt oxide, and ternary materials are used as positive electrodes.

    Power batteries and energy storage batteries also have different requirements for energy density and other aspects. Currently, lithium iron phosphate and ternary batteries are used in power batteries and energy storage batteries.

    3. According to the outer packaging material: the difference between aluminum shell lithium, steel shell lithium, and soft package 24V20AH powered lithium battery

    Since the soft pack 24V20AH powered lithium battery is packaged with aluminum-plastic film, the soft pack 24V20AH powered lithium battery generally does not explode when there is a safety hazard, but only gassing or cracking. It is about 20% lighter than the aluminum shell battery, and the capacity is about 5~10% higher than that of the aluminum shell battery. In addition, the soft pack 24V20AH powered lithium battery has small internal resistance and longer cycle life and is more suitable for portable applications that require high space or thickness, such as 3C consumer electronics.

    The battery aluminum shell has high specific strength, specific modulus, fracture toughness, fatigue strength, and corrosion resistance stability, because of the low density of aluminum alloy material, the non-magnetic, stable alloy has less resistance than magnetic field at the low-temperature stage, air tightness It is widely used in aviation, aerospace, high-speed trains, machinery manufacturing, transportation, and chemical industries.

    The physical stability of the steel material is much higher than that of the aluminum shell material. After the design and structure of various manufacturers have been optimized, the safety device has been placed inside the battery core. The safety of the steel shell column 24V20AH powered lithium battery has reached To a new height, most of the battery cells of notebook computer batteries are made of steel shell as the carrier.

    4. Structural split of 24V20AH powered lithium battery and competition pattern of each sector

    The largest cost of lithium-ion batteries is the cathode material, which accounts for nearly half of the total cost.

    There is a post on Snowball that analyzes the profitability of the four parts of the 24V20AH powered lithium battery. I think it is well written, so I will write the conclusion here: the lithium iron phosphate cathode will have a 67% market share in CR5 in 2021, and the ternary cathode will have a CR5 in 2021. The market share is 53%, and the market competition is very fierce; the negative electrode material will account for 73% of the CR5 market share in 2021, with a high degree of concentration. Compared with the positive electrode material, the market share of the top ten manufacturers has not changed much. Pattern; the diaphragm is the highest technical barrier in 24V20AH-powered lithium battery materials. The investment amount is large and the construction period is long. Enterprises with first-mover advantages usually bind high-quality customer resources for a long time. Therefore, the diaphragm industry is highly concentrated, and leading enterprises The status is difficult to be shaken in the short term, and the concentration is very high; in 2021, the CR3 market share of the electrolyte is 52%, and the CR5 market share is 63%, and the industry concentration is relatively high.

    From the perspective of the competitive landscape: separator>negative electrode>electrolyte>positive electrode

    From the perspective of the leading gross profit margin of each segment: diaphragm > negative electrode > electrolyte > positive electrode

    Suddenly I can understand why Enjie's convertible bonds have risen to the sky...  

    After sorting out, do you have a more systematic understanding of the 24V20AH powered lithium battery? The market has not been down recently, but I am generally optimistic. Now the prices of many convertible bonds can start to be swept away, everyone is actively researching.

    Well, the above is the whole content of the 24V20AH powered lithium battery brought by the 24V20AH powered lithium battery manufacturer Winshinepower today. I believe that after reading the whole text, you will have a deeper understanding of the classification and competition pattern of the 24V20AH powered lithium battery. , more information about lithium batteries can be found in our previous articles:

    Lithium battery energy density improvement method

    Understanding Impedance Spectroscopy (EIS) of Li-ion Batteries