Lifepo4 car battery vs energy storage battery - what's the difference between them
Lifepo4 batteries are a popular choice to meet power and energy storage needs in addition to ternary lithium battery.
Within the realm of LiFePO4 batteries, there are key differences between lifepo4 car battery and lifepo4 energy storage battery.
This article will use lifepo4 car battery vs energy storage battery to explain their differences in detail.
In order to get a general understanding of differences between lifepo4 car battery and energy storage battery , we first compiled a table to compare them in various aspects:
| Difference | lifepo4 car battery | lifepo4 energy storage battery |
| Application | Provides power for vehicles | Stores electrical energy for power stations, etc. |
| Structure | negative electrode is carbon material | negative electrode is graphite |
| Cycle life | More than 2000 times | More than 3500 times |
| Weight | Lighter weight for vehicles | Weight not as important |
| Size | Smaller and lighter | Generally more square and heavy |
| Focus | Focuses more on charging and discharging power, high safety and energy density, lightweight | Emphasizes battery capacity, stability, and consistency |
| Discharge current | Higher | Lower |
| Resistance | Lower | Higher |
| Component cost | Batteries account for about 80% of cost | Batteries account for 60% of cost |
What is lifepo4 car battery?
The lithium iron phosphate power battery mainly provides power, that is, the electricity is converted into driving power, traction power and so on through the electric motor.
Unlike traditional lead-acid batteries, lithium iron phosphate batteries are lighter and last longer. Examples include truck batteries and forklift batteries. At present, lifepo4 car battery has gradually become the main research and development direction of some of the top 10 power battery companies in the world.
What is lifepo4 energy storage battery?
LiFePO4 (lithium iron phosphate) energy storage battery is a type of rechargeable battery commonly used in energy storage applications.
It is mainly used in power stations of solar power generation equipment and wind power generation equipment, communication base stations, household energy storage, portable power supplies, etc.
LiFePO4 energy storage batteries are safer to use because they are less prone to overheating and thermal runaway. It is also a reliable and safe choice for energy storage applications.
What is the difference between lifepo4 car battery and energy storage battery?
When comparing the lifepo4 car battery to lifepo4 energy storage battery, the following differences are worth noting:
Structural composition
In the context of lifepo4 car battery vs energy storage battery, it is worth noting that the lithium iron phosphate power battery is different from the positive electrode material and negative electrode material. The positive electrode material of lithium iron phosphate power battery is lithium iron phosphate or lithium iron phosphate derivatives.
The positive electrode material of the lithium iron phosphate energy storage battery is lithium iron phosphate; the negative electrode material is carbon black or a carbon material with a high specific surface area, and the latter is graphite.
The focus of the battery
Lifepo4 car battery focus more on charging and discharging power. It requires fast charging rate, high output power, and shock resistance, especially emphasizing high safety and high energy density to achieve long-lasting battery life, as well as lightweight requirements in terms of weight and volume.
Energy storage battery emphasizes battery capacity, especially operation stability and service life, and more consideration should be given to the consistency of battery modules.
Lifepo4 energy storage battery emphasizes battery capacity, especially requires operational stability and service life. More consideration should be given to the consistency of battery modules.
In terms of battery materials, attention should be paid to the expansion rate and energy density, and the uniformity of electrode material performance, in order to pursue the long life and low cost of the overall energy storage device.
Cycle life
When we compared lifepo4 car battery vs energy storage battery, we found that the cycle life of the power battery is about 2000 times.
At present, the cycle life of Li-ion batteries of top 5 energy storage battery companies is required to be greater than 3,500 cycles.
If the frequency of charging and discharging is increased, the cycle life requirement is usually required to reach more than 5000 times.
Battery weight
The weight of the two batteries is also different. Lifepo4 car battery is smaller and lighter in specific gravity. Energy storage batteries are generally more square and heavy in appearance.
Because the power consumption of electric vehicles increases with the weight of the vehicle, the car battery requires lighter weight.
The requirements for energy storage batteries of energy storage power stations are large-scale, above the megawatt level or even at the level of hundreds of megawatts, and there is no requirement for the importance of batteries.
The energy storage lithium battery has no important restrictions, the production cost is lower than that of the power lithium battery, and the safety requirement is higher.
Electrical properties
● Discharge current: lithium iron phosphate power battery>lithium iron phosphate energy storage battery
● Resistance: lithium iron phosphate power battery
If the lifepo4 car battery and energy storage battery use the same battery material. But the quality of the same material, the power battery is slightly better, and the internal resistance will be lower. The energy storage battery is slightly worse, and the internal resistance will be higher. .
Application requirements
When it comes to application requirements, lifepo4 car battery vs energy storage battery comparison is significant. When lifepo4 car battery is discharged, the current changes greatly, and more attention is paid to the charging and discharging power.
Fast charging rates, high output power and shock resistance are required. Especially high safety and high energy density, long-lasting battery life and lightweight requirements in terms of weight and volume.
The energy storage battery can be regarded as a relatively stable output, and generally the discharge current is small and the discharge time is long. From the aspect of battery materials, it is necessary to consider the lithium storage performance of positive and negative electrode materials, as well as the related performance of electrolyte and separator.
Component costs
The components and costs of lifepo4 car battery and energy storage battery also differ.
Lifepo4 car battery pack is basically composed of the following five systems: battery module, battery management system, thermal management system, electrical system and structural system.
The cost of the power battery system consists of comprehensive costs such as batteries, structural parts, BMS, boxes, auxiliary materials, and manufacturing costs.
The cell occupies about 80% of the cost, and the pack (including structural parts, BMS, case, auxiliary materials, manufacturing costs, etc.) cost occupies about 20% of the whole battery pack cost.
Energy storage battery system is mainly composed of battery pack, battery management system (BMS), energy management system (EMS), energy storage converter (PCS) and other electrical equipment.
In the cost structure of the energy storage system, the battery is the most important component of the energy storage system, accounting for 60% of the cost; followed by the energy storage inverter, accounting for 20%, and the EMS (energy management system) accounting for 10%. BMS (battery management system) costs account for 5%, and others account for 5%.
Summary
In summary, although the structural composition, battery focus, cycle times, battery weight, electrical performance, application requirements, component costs and management systems of lifepo4 car battery and energy storage batteries are different, they play an important role in providing power and storing electrical energy respectively.
