The invention discloses a series-parallel battery pack integrated active equalization method based on inductance energy storage, the series-parallel battery pack comprises m groups of series battery packs which are connected in parallel, and each group of series battery pack comprises n single bodies; the equalization topology of the series-parallel battery pack comprises (2m*n+2m+2) MOS tubes, (2m*n+2m+2) diodes and two inductors. The two inductors are respectively marked as Ls and Lp. The equalization method has the characteristics that (1) series-parallel battery pack equalization can be realized at the same time; when all the single bodies in the series battery pack are balanced, energy can be directly transferred from high-energy single bodies to low-energy single bodies; when the series battery packs connected in parallel are balanced, energy can be directly transferred from the high-energy series battery pack to the low-energy series battery pack; (2) the balanced topology energy storage unit is simple in structure, small in size and simple to control; and (3) the equalization topology is easy to expand, and only the number of corresponding MOS tubes needs to be increased ordecreased when the number of single batteries in the series battery pack or the series battery pack changes.
本发明公开了一种基于电感储能的串并联电池组一体化主动均衡方法,串并联电池组共有m组串联电池组并联,每组串联电池组包含n个单体;串并联电池组的均衡拓扑包括(2m*n+2m+2)个MOS管、(2m*n+2m+2)个二极管、两个电感;两个电感分别标记为L和L。该均衡方法的特点是:①可以同时实现串并联电池组均衡;串联电池组内的各单体均衡时,能量可以直接从高能量单体转移到低能量单体;并联在一起的串联电池组之间均衡时,能量可以直接从高能量串联电池组转移到低能量串联电池组。②均衡拓扑储能单元结构简单、体积小,且控制简单。③均衡拓扑易于扩展,串联电池组内单体数量或串联电池组数量发生变化时,只需增减相应的MOS管数量。
Series-parallel battery pack integrated active equalization method based on inductance energy storage
一种基于电感储能的串并联电池组一体化主动均衡方法
2020-08-18
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 / 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 |
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