An energy storage system has at least one string of N modules, wherein each module includes an energy storage device and a switching unit for connecting the energy storage device in series into the string or for providing a short circuit. The energy storage system also includes a controller configured to perform the steps of: changing a state of at least one switching unit of the module during on-load operation of the ESS; measuring a current and a voltage at the energy storage device of the module, and determining a characteristic of the energy storage device P based at least on the current through the string and a change over time in the voltage measured before and after a change in the state of the switching cell.
一种能量存储系统具有至少一个N个模块的串,其中每个模块包括能量存储装置和用于将所述能量存储装置串联连接到所述串中或用于提供短路的开关单元。所述能量存储系统还包括控制器,所述控制器被配置为在ESS的带载操作期间执行以下步骤:改变模块的至少一个开关单元的状态;测量所述模块的所述能量存储装置处的电流和电压,以及至少基于通过所述串的电流和在开关单元的状态的改变之前和之后测量的所述电压的随时间的改变来确定能量存储装置P的特性。
Modular energy storage system
模块化能量存储系统
2023-01-31
Patent
Elektronische Ressource
Chinesisch
IPC: | B60L PROPULSION OF ELECTRICALLY-PROPELLED VEHICLES , Antrieb von elektrisch angetriebenen Fahrzeugen / G01R Messen elektrischer Größen , MEASURING ELECTRIC VARIABLES / H01M Verfahren oder Mittel, z.B. Batterien, für die direkte Umwandlung von chemischer in elektrische Energie , PROCESSES OR MEANS, e.g. BATTERIES, FOR THE DIRECT CONVERSION OF CHEMICAL ENERGY INTO ELECTRICAL ENERGY / H02J CIRCUIT ARRANGEMENTS OR SYSTEMS FOR SUPPLYING OR DISTRIBUTING ELECTRIC POWER , Schaltungsanordnungen oder Systeme für die Abgabe oder Verteilung elektrischer Leistung / H02M APPARATUS FOR CONVERSION BETWEEN AC AND AC, BETWEEN AC AND DC, OR BETWEEN DC AND DC, AND FOR USE WITH MAINS OR SIMILAR POWER SUPPLY SYSTEMS , Anlagen zur Umformung von Wechselstrom in Wechselstrom, von Wechselstrom in Gleichstrom oder umgekehrt, oder von Gleichstrom in Gleichstrom und zur Verwendung in Netzen oder ähnlichen Stromversorgungssystemen |