A novel architecture for battery balancing systems based on wireless power transfer (WPT) is proposed to address the challenges of complex external wiring, low integration and poor maintainability. In this system, wireless power transfer coils, batteries, and the balancing control unit are integrated into a single structure. By incorporating relay coils, energy exchange pathways between any two imbalanced units are established. An LCC resonant network is introduced to suppress interference from non-imbalanced units during energy transfer. To overcome efficiency degradation caused by variations in battery load during balancing, a maximum efficiency tracking (MET) control strategy is developed. This strategy employs a semi-active rectifier (SAR) to emulate the optimal load, ensuring the system consistently operates at its maximum efficiency. To verify the feasibility of the proposed system, a six-coil balancing experimental platform is constructed. Experimental results confirm the effectiveness of the proposed architecture and control strategy, demonstrating significantly enhanced energy transfer efficiency during balancing compared with existing WPT-based systems.
| 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 |