The invention discloses a distributed lithium battery pack energy storage system which comprises a plurality of energy storage control units used for being connected to a DC bus in parallel. The energy storage control units perform data sharing through bus communication; the energy storage control unit comprises a battery pack composed of single lithium batteries, a bidirectional DC converter, a microcontroller and a state monitoring module. An independent charging control program is configured in each microcontroller, and the independent charging control programs are used for determining thecharging modes of the corresponding energy storage control units according to the state monitoring data of the corresponding energy storage control units and the DC bus voltage UA; and a cooperative discharge control program is configured in each microcontroller, and the cooperative discharge control programs are used for determining an overall discharge mode according to the shared data and the DC bus voltage UA. The technical problems of low reliability and low energy utilization rate of the lithium battery of the lithium battery pack energy storage system in the prior art are solved, the service life of the lithium battery can be prolonged, and the cost is reduced.
本发明公开了一种分布式锂电池组储能系统,包括若干用于并联到直流母线上的储能控制单元;储能控制单元之间通过总线通信进行数据共享;储能控制单元包括由单体锂电池组成的电池组、双向直流变换器、微控制器与状态监测模块;每个微控制器内均配置有独立充电控制程序,所述独立充电控制程序用于根据对应储能控制单元的状态监测数据与直流母线电压U确定相应储能控制单元的充电模式;每个微控制器内均配置有协同放电控制程序,协同放电控制程序用于根据共享数据与直流母线电压U确定整体放电模式。本发明解决了现有技术中锂电池组储能系统的锂电池可靠性与能量利用率不高的技术问题,能够延长锂电池使用寿命,降低成本。
Distributed lithium battery pack energy storage system
一种分布式锂电池组储能系统
2020-05-19
Patent
Electronic Resource
Chinese
IPC: | H02J CIRCUIT ARRANGEMENTS OR SYSTEMS FOR SUPPLYING OR DISTRIBUTING ELECTRIC POWER , Schaltungsanordnungen oder Systeme für die Abgabe oder Verteilung elektrischer Leistung / B60L PROPULSION OF ELECTRICALLY-PROPELLED VEHICLES , Antrieb von elektrisch angetriebenen Fahrzeugen / H02H EMERGENCY PROTECTIVE CIRCUIT ARRANGEMENTS , Schutzschaltungsanordnungen |
Lithium battery pack for new energy automobile and use method of lithium battery pack
European Patent Office | 2021
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