What is an energy storage lithium battery?
Energy storage lithium batteries mainly refer to lithium battery packs used in energy storage power sources, solar power generation equipment and wind power generation equipment, and renewable energy storage energy.
What is a power lithium battery?
Power battery refers to a power source with large electrical energy capacity and output power. Power battery is a power source that provides power source for tools. It mostly refers to lithium batteries that provide power for electric vehicles, electric trains, electric bicycles, golf carts, and the power of new energy vehicles. The source is generally mainly based on power batteries.
What is the difference between energy storage lithium battery and power lithium battery?
1. Different battery capacity
In the case of new batteries, use a discharger to test the battery capacity. Generally, the capacity of the power lithium battery is low; the capacity of the energy storage lithium battery pack is high.
2. Different application industries
Power lithium batteries are used in electric vehicles, electric bicycles, electric motorcycles, electric equipment and tool drive power batteries; used in power transmission and substations to provide closing current for power units;
Energy storage lithium battery packs are mainly used in energy storage power stations such as water power, thermal power, wind power and solar power stations, power auxiliary services for peak regulation and frequency regulation, digital products, power products, medical and security, and UPS power supplies.
3. The location of the battery management system BMS is different
In the energy storage system, the energy storage lithium battery only interacts with the energy storage converter at 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 electrical energy passes through the converter. The converter is converted into AC and sent to the AC grid;
The BMS of an electric vehicle has an energy exchange relationship with the motor and the charger in terms of high voltage; in terms of communication, there is information exchange with the charger during the charging process, and in the entire application process, it has the most detailed information with the vehicle controller. Information exchange.
4. Different types of batteries are used
For the sake of safety and economy, lithium iron phosphate batteries are often used when choosing lithium battery packs, and more energy storage power stations use lead-acid batteries and lead-carbon batteries;
The current mainstream battery types for power lithium battery electric vehicles are lithium iron phosphate batteries and ternary lithium batteries.
5. Different performance and design
Power lithium batteries focus more on charging and discharging power, requiring fast charging rate, high output power, and vibration resistance, with particular emphasis on high safety and high energy density to achieve long-lasting battery life, as well as lightweight requirements in terms of weight and volume ;
The preparation of energy storage lithium batteries emphasizes battery capacity, especially requires operation stability and service life, and considers the consistency of battery modules. In terms of battery materials, attention should be paid to expansion rate, energy density, and uniformity of electrode material performance, in order to pursue the overall storage capacity. long life and low cost of energy equipment.