The invention discloses a switching type energy management method based on a switching network, and the method comprises the following steps: S1, judging the inconsistency of a lithium battery pack according to the SOC state of a lithium battery; S2, switching an energy management strategy according to the inconsistency of the lithium battery pack, and obtaining the reference output power of the lithium battery pack; S3, calculating the working current of the lithium battery pack; and S4, limiting the reference output power and the working current of the lithium battery pack, performing SOC state updating of the lithium battery, and completing switching type energy management based on the switching network. According to the energy management method, on the basis of a switching network circuit, power limitation of a fuel cell, current limitation of a lithium battery pack and an over-charge and over-discharge protection function are considered. On the precondition that normal operation of the vehicle is guaranteed, the inconsistency of the lithium battery pack is improved, the charge state of the lithium battery pack is controlled within a proper range, and the dynamic property, safety and economical efficiency of the vehicle are guaranteed.
本发明公开了一种基于开关网络的切换式能量管理方法,包括以下步骤:S1:根据锂电池的SOC状态,判断锂电池组的不一致性;S2:根据锂电池组的不一致性,切换能量管理策略,并得到锂电池组的参考输出功率;S3:计算锂电池组的工作电流;S4:对锂电池组的参考输出功率和工作电流进行限制,并进行锂电池的SOC状态更新,完成基于开关网络的切换式能量管理。本发明的能量管理方法以开关网络电路为基础,考虑了燃料电池的功率限制、锂电池组的电流限制和过充过放保护功能。本发明可以在保证车辆正常运行的前提下,改善锂电池组不一致性,并将锂电池组的荷电状态控制在合适的范围内,保证了车辆的动力性、安全性和经济性。
Switching type energy management method based on switching network
一种基于开关网络的切换式能量管理方法
13.07.2021
Patent
Elektronische Ressource
Chinesisch
IPC: | B60L PROPULSION OF ELECTRICALLY-PROPELLED VEHICLES , Antrieb von elektrisch angetriebenen Fahrzeugen |
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