Autonomous mobile device and wireless charging system thereof
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Solution Overview
Problem
Conventional wired charging systems for autonomous lawn mowers are cumbersome, pose safety hazards, and suffer from issues like pole piece erosion and misalignment, making wireless charging necessary but challenging due to alignment difficulties between the transmitting and receiving ends.
Innovation Solution
An autonomous moving device wireless charging system that includes a wireless charging station with a transmitting end and a receiving end, equipped with a charging signal detection module and a control module to automatically align and dock the device for efficient energy transfer, using a signal line search module and magnetic force detection for precise positioning.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Reliability
If wired charging station is constructed on lawn, then charging function is achieved, but vegetation growth is blocked and safety hazards are created
Solution Approach 1:
The patent extracts the charging function from the physical wired charging station structure. The wireless charging transmitting end is embedded in the ground without exposed pole pieces, removing the harmful elements (exposed metal components) while preserving the charging capability through electromagnetic field transmission.
Solution Approach 2:
The patent replaces the mechanical wired connection system with an electromagnetic field-based wireless charging system. This substitution eliminates the need for exposed pole pieces and physical connections, thereby removing safety hazards and vegetation blockage issues while maintaining charging functionality.
2Reliability
If pole piece is exposed for wired charging, then charging connection is established, but erosion and oxidation occur causing poor contact
Solution Approach 1:
The patent replaces the mechanical wired connection system with an electromagnetic field-based wireless charging system. This substitution eliminates the need for exposed pole pieces that are subject to erosion and oxidation, thereby removing safety hazards and vegetation blockage issues while maintaining charging functionality.
3Manufacturing precision
If transmitting end is manually aligned with receiving end, then charging alignment is achieved, but automation is reduced and operation complexity increases
Solution Approach 1:
The patent implements self-service docking through electromagnetic field interaction. The transmitting end generates an electromagnetic field that automatically guides and aligns the receiving end without manual intervention. The system self-adjusts to achieve optimal charging alignment through the natural interaction of electromagnetic fields.
Solution Approach 2:
The patent employs feedback mechanisms where the receiving end detects the electromagnetic field strength and position, automatically adjusting its location to achieve optimal alignment with the transmitting end. This closed-loop control ensures precise docking while maintaining high automation.
Applied Scientific Principles
This section explains which scientific principles are used to turn an abstract innovation direction into a practical engineering solution.
Function Achieved in This Case
Enables safe, efficient, and automatic wireless charging of autonomous lawn mowers by ensuring optimal alignment and preventing issues like pole piece erosion and misalignment, improving user safety and convenience.
Implementation Method 1
the wireless charging transmitting end is configured to wirelessly transmits a charging signal to the wireless charging receiving end to transmit electric energy
Implementation Method 2
a charging signal detection module configured to detect whether intensity of a charging signal received by the wireless charging receiving end reaches a predetermined value
Data Source
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AI summary
An autonomous moving device wireless charging system, including an autonomous moving device and a wireless charging station, the wireless charging station includes a wireless charging transmitting end; the autonomous moving device includes: a wireless charging receiving end, the wireless charging transmitting end wirelessly transmits a charging signal to the wireless charging receiving end to transmit electric energy; a charging battery, electrically connected to the wireless charging receiving end, to receive the electric energy transmitted from the wireless charging receiving end; a wireless charging locating module, the wireless charging locating module determines whether the autonomous moving device is at a charging location; a driving module; and a control module, connected to the wireless charging locating module and driving module, when the wireless charging locating module determines that the autonomous moving device is at the charging location, controlling the driving module, to make the autonomous moving device dock at the charging location.