A new kind of bi-directional DC/DC topological structure used in the technology of lithium batteries is put for-ward. Adopting two-stage bi-directional DC/DC topological combination ( the half-bridge bi-directional converter and the buck-boost bi-directional converter) , and taking control of buck-boost bi-directional converter by digital signal processor, which can attain the transformation of large voltage differences. The loop simulation of the topological structure of the power circuit can be realized in the environment of Matlab/Simlink. The simulation results show that the converter performance is stahle, and can effectively realize bi-directional transformation between 3 V battery voltage and 400 V bus bar voltage.%提出一种用于锂电池化成技术的新型双向DC/DC拓扑结构.采用两级双向DC/DC拓扑结构,一级使用半桥双向变换器,另一级使用Buck-boost双向变换器,用数字信号处理器对Buck-boost双向变换器进行闭环控制,能实现输入电压和输出电压有较大压差的情况下进行变换.在Matlab/Simlink下对该拓扑结构进行验证.结果表明,该变换器性能稳定,能有效地实现3 V电池电压和400 V母线电压双向变换.
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