In-depth discussion of energy storage battery technology, battery energy storage value evaluation research and battery energy storage device applications, etc.
(1) Principles of charging and discharging lithium-ion batteriesThe charging and discharging principle of lithium-ion batteries is shown in Figure 1. Lithium ion battery is actually a kind of lithium ion concentration difference battery. The positive and negative electrodes are composed of two different lithium ion intercalation compounds. Lithium ions are extracted from the positive electrode […]
The emergence of lithium-ion batteries is a leap in the history of lithium secondary batteries, which makes lithium batteries formally enter the field of large-capacity energy storage applications. Lithium-ion battery cathode materials not only participate in electrochemical reactions as electrode materials, but also serve as lithium ion sources. Therefore, the positive active material of lithium-ion […]
Lithium batteries are a general term for chemical power sources that use metallic lithium or lithium-containing materials as negative electrode materials, including lithium primary batteries and lithium secondary batteries. The initial attempt to apply metallic lithium to battery systems began in the late 1950s. In 1958, Harris proposed the use of organic electrolytes as the […]
At present, the representative and mature battery technologies mainly include: lead-acid batteries, nickel-cadmium batteries, nickel-hydrogen batteries, lithium batteries, sodium-sulfur batteries, flow batteries (including vanadium batteries, zinc-bromide batteries). Among them, lead-acid batteries have the longest history, mature technology and low cost (in the early stage of the development of electric energy storage technology, they are widely […]
The battery energy storage station does not have special requirements on geographical conditions like pumped storage stations and compressed air energy storage stations. It has strong geographic adaptability and has a small area. In large-capacity projects, more energy storage stations can be used. Layered three-dimensional design to save floor space. So it can be widely […]
The battery energy storage system can be set with a variety of operating modes according to different applications and user needs. The control system should determine the direction and magnitude of the power transmission of the power conversion subsystem (PCS) according to the preset operating mode, as well as the conditions of the battery and […]
With the growth of electricity demand increasing year by year, the problem of low load factor (Load Factor) generally exists in the distribution network of large load centers. For example, during the day, there is a big difference in the need for electricity between day and night. Newly built power plants and transmission systems that […]
Under the current conditions of energy storage technology, pumped water storage, compressed air energy storage and battery energy storage are mainly available for large-capacity energy storage. However, according to the analysis of Shanghai’s geographical conditions and regional economic conditions, the first two energy storage methods are not applicable In the Shanghai area, only battery energy […]
In urban power grids, the daily maximum load of the summer peak power consumption generally occurs around noon, but the curve between the noon peak and the light peak is flattening day by day, and the daily maximum load in some residential areas has appeared during the night light peak period. The continuous increase of […]
â‘ Reduce the operating costs of power generation companies and power grid companies, and reduce users’ electricity costsThe operation and maintenance of the energy storage system is relatively simple, while the operation and maintenance of the power plant or the power grid are relatively complicated. After the energy storage system is put into operation, the operation […]