What are the specific differences between power lithium batteries and energy storage lithium batteries

1, battery capacity is different

In the case of new batteries, the discharge meter is used to test the battery capacity, and the capacity of the general power lithium-ion battery is about 1000-1500mAh;

The capacity of the lithium-ion battery pack is more than 2000mAh, and some can reach 3400mAh.

2, performance and design are not the same

Power lithium-ion batteries are more focused on charging and discharging power, requiring fast charging rate, high output power, shock resistance, especially emphasizing high safety and high energy density to achieve durable endurance, as well as lightweight requirements in terms of weight and volume;

The preparation of lithium-ion batteries emphasizes the battery capacity, especially the operation stability and service life, consider the consistency of the battery module, and pay attention to the expansion rate and energy density, and the performance uniformity of the electrode material in order to pursue the long life and low cost of the overall energy storage equipment.

3. Different types of batteries are used

For safety and economic considerations, when choosing lithium-ion battery packs, lithium-ion iron phosphate batteries are often used, and some energy storage power stations use lead-acid batteries and lead-carbon batteries;

The current mainstream battery types of electric vehicles are lithium iron phosphate batteries and ternary lithium ion batteries.

4. Different nature

Power lithium-ion battery refers to the battery that supplies power for transportation vehicles, generally related to the small battery that supplies energy for portable electronic devices;

Ordinary energy storage lithium-ion battery is a lithium metal or lithium alloy as a negative electrode material, the use of non-aqueous electrolyte solution of the primary battery, and rechargeable battery Lithium-ion battery and lithium-ion polymer battery is not the same.

5, the battery management system BMS location is different

In the energy storage system, the energy storage lithium-ion battery only interacts with the energy storage converter at high voltage, and the converter takes power from the AC grid and charges the battery pack. Or the battery pack supplies power to the converter, and the electric energy is converted into AC through the converter and sent to the AC power grid.