Full
Outline
To solve the inconsistency problem of series battery packs, a dual-layer topological structure with an improved Cuk chopper circuit in the outer layer and a single-inductor balanced topology in the inner layer is proposed. The improved Cuk chopper circuit is adopted, and a dual-layer switch is used to connect the balanced battery pack to the Cuk equalizer, so as to shorten the energy transfer path and improve the energy transfer efficiency. The use of the zero voltage switch technology ensures continuous balanced current and small fluctuations therein. The single-inductor balanced topology is used, which has a simple structure and high accuracy. The proposed dual-layer balanced topology can achieve energy transfer between any individual cells within one pack and that between any battery packs. With the state-of-charge of the battery as an equilibrium evaluation indicator, a balanced circuit simulation model is set up in MATLAB/Simulink, which is further compared with the traditional balanced topology in terms of static equilibrium and discharge equilibrium. Results show that the proposed balanced topology shortens the balancing time and improves the balanced efficiency. A battery balancing experimental platform was established, and discharge experiments were carried out on 12 batteries, verifying the accuracy of the hierarchical balanced topology.
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| 科 Family | 属数 Number of genus | 种数 Number of species | 占总种数比例 Percentage of total species (%) | 属 Genus | 种数 Number of species | 占总种数比例 Percentage of total species (%) |
|---|---|---|---|---|---|---|
| 鹅膏菌科Amanitaceae | 2 | 11 | 5.26 | 鹅膏菌属 Amanita | 10 | 4.78 |
| 小菇科 Mycenaceae | 2 | 12 | 5.74 | 丝盖伞属 Inocybe | 5 | 2.39 |
| 多孔菌科 Polyporaceae | 8 | 14 | 6.70 | 蜡蘑属 Laccaria | 5 | 2.39 |
| 红菇科 Russulaceae | 3 | 23 | 11.00 | 小皮伞属 Marasmius | 6 | 2.87 |
| 小菇属 Mycena | 11 | 5.26 | ||||
| 光柄菇属 Pluteus | 5 | 2.39 | ||||
| 红菇属 Russula | 17 | 8.13 | ||||
| 栓菌属 Trametes | 5 | 2.39 |
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