Energy storage battery and power battery

Although both power lithium batteries and energy storage lithium batteries are lithium batteries, their properties are completely different. I believe that after reading the decomposition below, you will have a deeper understanding of the difference between power lithium batteries and energy storage lithium batteries. When we use batteries, we can choose according to our own needs.

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1. The first is the difference in battery capacity

For all new batteries, the battery capacity is tested by a discharge meter. Generally, the capacity of power lithium battery is about 1000-1500mAh; the battery capacity of energy storage lithium battery pack is above 2000mAh.

2. Different application industries

Power lithium batteries are mainly used in the driving power of electric vehicles, electric bicycles, electric motorcycles, electric equipment and tools; used for power transmission and transformation, and provide closing current for power devices; energy storage lithium battery packs are mainly used for hydropower , thermal power, wind power, solar power plants and other energy storage power supplies, peak shaving and frequency modulation power supply auxiliary services, digital products, power products, medical security products, UPS power supplies, etc.

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3. The positioning of lithium battery BMS battery management system is different

In the energy storage system, the energy storage lithium battery only interacts with the energy storage converter under high voltage, and the converter takes power from the AC grid to charge the battery pack; or the battery pack supplies power to the converter, and the power is converted by the converter into The AC power is sent to the AC grid; the BMS battery management system of the electric vehicle has an energy exchange relationship with the motor and the charger under high voltage. In terms of communication, information interaction with the charger during the charging process, and the most detailed information interaction with the on-board controller during the entire application process.

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4. Use a different type of battery

For safety and economic considerations, lithium iron phosphate batteries are often used when selecting lithium battery packs. Some energy storage power stations use lead-acid batteries and lead-carbon batteries; the current mainstream battery types for power lithium battery electric vehicles include lithium iron phosphate batteries and ternary lithium batteries.

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5. Different performance and design

Power lithium 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 to achieve long-lasting battery life, as well as light weight and volume requirements; energy storage The preparation of 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 of electrode materials, energy density, and uniformity of battery material properties, in order to pursue long life and low cost of the entire energy storage device.

The above is the introduction of the difference between energy storage lithium battery and power lithium battery. Through the above introduction, I believe that everyone has a deeper understanding of the difference between energy storage lithium battery and power lithium battery.

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