The difference between power battery and energy storage battery
The power battery is the power source that provides the power source for the tool, and usually refers to the battery that provides power for electric cars, electric trains, electric bicycles, and golf carts.
Energy storage batteries mainly refer to batteries used in solar power generation equipment, wind power generation equipment, and renewable energy storage energy.
Although both power batteries and energy storage batteries have lithium batteries, they are completely different in nature. Now I will briefly introduce the difference between power battery and energy storage battery. You can choose according to your needs.
1. Fundamental differences
The first is the difference in battery capacity. In order to store more energy in energy storage battery systems, generally battery packs have larger capacity and smaller charge/discharge currents. At present, many cities are equipped with large-scale energy storage power systems. In order to meet the high-power operation of electric vehicles, the power battery is mainly manifested in the characteristics of large discharge current and long cycle life.
Second, the industry is different
Energy storage batteries are mainly used in water power, thermal power, wind power, solar power generation, and renewable energy storage energy or as a backup emergency power source.
The power battery is the power source that provides the power source for the tool, and usually refers to the battery that provides power for electric cars, electric trains, electric bicycles, and golf carts.
Three, the difference of the battery management system BMS
In the energy storage system, the energy storage battery only interacts with the energy storage converter under high voltage, and the converter takes electricity from the AC grid to charge the battery pack; or the battery pack supplies power to the converter, and the electric energy is converted by the converter The BMS of the electric vehicle has an energy exchange relationship with the motor and the charger under high voltage. In terms of communication, there is information interaction with the charger during the charging process, and the most detailed information interaction with the vehicle controller during the entire application process.
Fourth, the different battery types
Due to the high temperature safety and high cycle life characteristics of lithium iron phosphate batteries, most of the energy storage batteries choose lithium iron phosphate batteries;
At present, the mainstream battery types for power battery electric vehicles include lithium iron phosphate batteries and ternary lithium batteries. Recently, lithium iron phosphate batteries have been catching up with the ternary lithium batteries.
five,
Power lithium battery refers to the battery that provides power for electric vehicles, which is mainly manifested in high-rate discharge and high safety;
In the past, lead-acid batteries were chosen for energy storage batteries, but the later industry is gradually being replaced by lithium iron phosphate batteries with high temperature performance, high cycle life and more economical.
Six, performance and design are different
Power batteries pay more attention to charging and discharging power, requiring fast charging speed, high output power, and impact resistance, with special emphasis on high safety and high energy density, in order to achieve long-lasting battery life, as well as lightweight requirements in weight and volume;
The preparation of energy storage lithium batteries emphasizes battery capacity, especially requires operational stability and service life, and more consideration is given to the consistency of battery modules. In terms of battery materials, attention should be paid to the expansion rate, energy density, and uniformity of electrode material performance. In order to pursue the long life and low cost of the entire energy storage equipment.
