An equalization system and method based on multi-receiver double-layer LCL-S wireless power transfer
By using a dual-layer LCL-S wireless power transfer system, voltage balancing between and within modules is achieved through LCL resonant networks and switch control, solving the problem of WPT multi-receiver coil offset sensitivity and achieving efficient and low-cost voltage balancing.
CN122419014APending Publication Date: 2026-07-17SOUTHWEST CHINA RES INST OF ELECTRONICS EQUIP
Patent Information
- Authority / Receiving Office
- CN · China
- Patent Type
- Applications(China)
- Current Assignee / Owner
- SOUTHWEST CHINA RES INST OF ELECTRONICS EQUIP
- Filing Date
- 2026-05-11
- Publication Date
- 2026-07-17
AI Technical Summary
Technical Problem
Existing WPT multi-receiver equalization systems are sensitive to coil offset, have poor equalization performance, high component redundancy, and are costly.
Method used
A voltage equalization system based on multi-receiver dual-layer LCL-S wireless power transfer is adopted, including a dual-layer structure of the transmitting side and the receiving side. The system utilizes an LCL resonant compensation network and switch control to achieve voltage equalization between and within modules through first and second voltage multipliers.
Benefits of technology
It maintains high efficiency and balanced performance under imperfect alignment conditions, has strong anti-misalignment capability, simple structure, low cost, wide applicability, and is easy to expand.
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Figure CN122419014A_ABST
Abstract
本发明公开了一种基于多接收器双层LCL‑S无线电能传输的均衡系统及方法，属于无线电能传输和电池管理技术领域，包括发射侧和接收侧；发射侧包括依次连接的直流输入源、逆变器、LCL谐振补偿网络以及发射线圈Lp；接收侧采用包含开关的双层结构；其中，双层结构具体包括层Ⅰ和层Ⅱ，层Ⅰ和层Ⅱ均设有接收线圈，每个线圈与开关串联，通过控制开关来控制所对应均衡电路的通断。本发明解决了现有WPT多接收器均衡系统对线圈偏移敏感、均衡性能差、组件冗余度高的问题，具有控制策略简单、可扩展性高、抗偏移能力强、适用范围广、结构简单和成本低的优点。
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