Wireless charging coil module, electronic device, wireless charging base and wireless charging system
By designing a variable inductance wireless charging coil module and utilizing an inductance switching unit to switch between low and high inductance states, the efficiency problem in the wireless charging system under elevated and non-elevated states is solved, achieving efficient charging in different states.
CN122437279APending Publication Date: 2026-07-21HUAWEI TECH CO LTD
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Patent Information
- Authority / Receiving Office
- CN · China
- Patent Type
- Applications(China)
- Current Assignee / Owner
- HUAWEI TECH CO LTD
- Filing Date
- 2025-01-17
- Publication Date
- 2026-07-21
AI Technical Summary
Technical Problem
In existing wireless charging systems, the inductance of the charging coil is fixed, which cannot simultaneously meet the wireless charging efficiency requirements of electronic devices in both elevated and non-elevated states, resulting in reduced efficiency or increased power loss.
Method used
Design a variable inductance wireless charging coil module that switches between low and high inductance states via an inductance switching unit, adjusting the inductance according to the position of the electronic device to improve coupling efficiency and reduce power loss.
Benefits of technology
Both elevated and non-elevated states can improve wireless charging efficiency, avoid charging interruptions, reduce power loss, and increase the utilization rate of the charging coil.
✦ Generated by Eureka AI based on patent content.
Smart Images
Figure CN122437279A_ABST
Abstract
The application relates to the technical field of wireless charging, and provides a wireless charging coil module, an electronic device, a wireless charging base and a wireless charging system, which can solve the problem that a charging coil in the prior art cannot simultaneously meet the requirements of wireless charging efficiency of an electronic device in a raised state and a non-raised state. The wireless charging coil module comprises a wireless charging coil and a inductance switching unit connected with the wireless charging coil; the wireless charging coil comprises a first wire group and a second wire group; the first wire group comprises M wires; the second wire group comprises N wires; P wires are collectively wound into the wireless charging coil, and P = M + N; the inductance switching unit has a first connection end and a second connection end; the inductance switching unit has a low inductance control state and a high inductance control state; when the inductance switching unit is in the low inductance control state, the P wires are connected in parallel between the first connection end and the second connection end; and when the inductance switching unit is in the high inductance control state, the N wires of the second wire group are connected in series with the first wire group between the first connection end and the second connection end. The application can be used in electronic devices such as mobile phones.
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