The invention belongs to the technical field of new energy automobiles, and discloses a method for improving the discharge energy of a multi-branch parallel battery system, which comprises the following steps: step 1, when the whole automobile is started, a battery management system respectively calculates the maximum allowable power of each branch according to the current state information of the multi-branch battery system; 2, the minimum value of the maximum instantaneous discharge power, calculated in the step 1, of each branch is obtained and multiplied by the parallel connection number of the current multi-branch PACK system, the maximum allowable power of the current system is obtained, and the maximum instantaneous discharge power capacity of each branch is the maximum allowable power of the branch; 3, in the actual whole vehicle operation process, the whole vehicle conducts battery power control according to the maximum allowable power calculated by the battery management system, and system power adjustment is conducted according to the maximum allowable power of the branches. According to the invention, the number of related parameters required by the control strategy is reduced, the computational logic is simple, the algorithm robustness is high, the stability is good, and the control precision is high.
本发明属于新能源汽车技术领域,公开了一种提高多支路并联电池系统放电能量的方法,包括下列步骤:步骤1、当整车启动时,电池管理系统根据当前的多支路电池系统的状态信息,分别计算出每条支路的最大许用功率;步骤2:对步骤1计算出的各条支路的最大瞬时放电功率取最小值,再乘上当前多支路PACK系统的并联数,得到当前的系统的最大许用功率,而每条支路的的最大瞬时放电功率能力即该支路的最大许用功率;步骤3:实际整车运行过程中,整车根据电池管理系统计算出的最大许用功率进行电池功率控制,根据支路的最大许用功率进行系统功率调节。本发明减少了控制策略需要的相关参数数量,计算逻辑简单,算法鲁棒性高,稳定性好,控制精度高。
Method for improving discharge energy of multi-branch parallel battery system
一种提高多支路并联电池系统放电能量的方法
15.04.2025
Patent
Elektronische Ressource
Chinesisch
IPC: | B60L PROPULSION OF ELECTRICALLY-PROPELLED VEHICLES , Antrieb von elektrisch angetriebenen Fahrzeugen |
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