Advantages and disadvantages of Prismatic and cylindrical lithium batteries
Advantages and disadvantages of Prismatic and cylindrical lithium batteries
Cylindrical lithium iron battery
Advantages: Cylindrical iron-lithium battery is the earliest mature industrialized lithium battery product. After more than 20 years of development, the production process of cylindrical lithium battery is now mature, with high production efficiency and relatively low cost, so the cost of PACK is also Relatively low, the yield rate of lithium batteries is higher than that of prismatic lithium batteriesprismatic lithium batteries and soft-pack lithium batteries, and their consistency and safety are also excellent.
Disadvantages: Because the cylindrical iron-lithium battery is generally packaged in a steel shell, although the safety is relatively high, the weight will also be heavier, which will also make the specific energy of the lithium battery pack relatively low.
Prismatic iron lithium battery
Advantages: The packaging shells of prismatic iron-lithium batteries are mostly made of aluminum alloy and stainless steel. The inside of the battery adopts winding or laminated technology, which protects the battery cell better than soft-packed lithium battery. The safety of the battery cell Compared with the cylindrical lithium battery, there is also a big improvement.
Disadvantages: The prismatic lithium iron battery pack can be customized according to the size of the product, but it will also make the market have many different types of prismatic lithium batteries. Too many different types of lithium batteries will make it difficult to unify the process, making the automation level not high, the monomers are quite different, and there may also be groups of prismatic lithium battery packs that are far less than the life of a single lithium battery.
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Prismatic Disadvantages
Compared to prismatic cells, cylindrical cells can be produced much faster so more KWh per cell can be produced every day equaling lower $ per KWh. The electrodes in a cylindrical cell are wound tightly and encased in a metal casing, This minimizes electrode material from breaking up from the mechanical vibrations, thermal cycling from charging and discharging and mechanical expansion of the current conductors inside from thermal cycling. Many cells are combined in series and in parallel to increase voltage and capacity of the battery pack, if one cell goes bad, the impact on the entire pack is low. CHARGEX® cells bolt through lengthway circuit boards that will prevent a bad cell from shorting out the rest of the pack, allowing it to continue functioning with slightly reduced capacity. With prismatic cells if one cell goes bad it can compromise the whole battery pack. Cylindrical cells will also radiate heat and control temperature better than prismatic cells. Prismatic cells are made up of many positive and negative electrodes sandwiched together leaving more possibility for short circuit and inconsistency. The higher capacity makes it difficult for the BMS to protect each cell from over charging and dissipating heat. The larger cell size minimizes the possibility for automation leading to a lower degree of consistency. The internal electrodes can easily expand and contract causing deformation which can lead to a internal short circuit and are more prone to swelling similar to lead batteries.
Cylindrical lithium iron battery
Advantages: Cylindrical iron-lithium battery is the earliest mature industrialized lithium battery product. After more than 20 years of development, the production process of cylindrical lithium battery is now mature, with high production efficiency and relatively low cost, so the cost of PACK is also Relatively low, the yield rate of lithium batteries is higher than that of prismatic lithium batteries and soft-pack lithium batteries, and their consistency and safety are also excellent.
Disadvantages: Because the cylindrical iron-lithium battery is generally packaged in a steel shell, although the safety is relatively high, the weight will also be heavier, which will also make the specific energy of the lithium battery pack relatively low.
Prismatic iron lithium battery
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Advantages: The packaging shells of prismatic iron-lithium batteries are mostly made of aluminum alloy and stainless steel. The inside of the battery adopts winding or laminated technology, which protects the battery cell better than soft-packed lithium battery. The safety of the battery cell Compared with the cylindrical lithium battery, there is also a big improvement.
Disadvantages: The prismatic lithium iron battery pack can be customized according to the size of the product, but it will also make the market have many different types of prismatic lithium batteries. Too many different types of lithium batteries will make it difficult to unify the process, making the automation level not high, the monomers are quite different, and there may also be groups of prismatic lithium battery packs that are far less than the life of a single lithium battery.
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Prismatic Disadvantages
Compared to prismatic cells, cylindrical cells can be produced much faster so more KWh per cell can be produced every day equaling lower $ per KWh. The electrodes in a cylindrical cell are wound tightly and encased in a metal casing, This minimizes electrode material from breaking up from the mechanical vibrations, thermal cycling from charging and discharging and mechanical expansion of the current conductors inside from thermal cycling. Many cells are combined in series and in parallel to increase voltage and capacity of the battery pack, if one cell goes bad, the impact on the entire pack is low. CHARGEX® cells bolt through lengthway circuit boards that will prevent a bad cell from shorting out the rest of the pack, allowing it to continue functioning with slightly reduced capacity. With prismatic cells if one cell goes bad it can compromise the whole battery pack. Cylindrical cells will also radiate heat and control temperature better than prismatic cells. Prismatic cells are made up of many positive and negative electrodes sandwiched together leaving more possibility for short circuit and inconsistency. The higher capacity makes it difficult for the BMS to protect each cell from over charging and dissipating heat. The larger cell size minimizes the possibility for automation leading to a lower degree of consistency. The internal electrodes can easily expand and contract causing deformation which can lead to a internal short circuit and are more prone to swelling similar to lead batteries.
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