Split-Core Magnetic Charging for Corrosion-Safe Electric Boats
Find Innovative SolutionsGenerate Solutions
Solution Overview
Problem
Existing charging methods for electric boats are unsatisfactory due to susceptibility to corrosion and electric shock in extreme humidity and salinity environments, leading to potential short-circuit faults.
Innovation Solution
A magnetically coupled charging system utilizing a resonant inverter, split core transformer, and rectifier assembly, with sealed and insulated components to prevent exposure to water and ensure safe power transmission.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Reliability
If traditional electrical conductors are used for charging electric boats in marine environments, then power transmission can be achieved, but the conductors are susceptible to corrosion and electric shock due to extreme humidity and salinity
Solution Approach 1:
The patent introduces magnetic fields as an intermediary medium for power transmission. The charging system uses a transmitter that generates a magnetic field and a receiver that converts the magnetic field back to electrical energy, eliminating the need for direct electrical contact between the boat and shore power sources. This mediator approach solves the corrosion and electric shock problems by removing exposed conductors from the marine environment.
Solution Approach 2:
The patent replaces the traditional mechanical electrical connection system (exposed conductors and plugs) with a magnetic coupling system. Instead of physically connecting electrical wires that are vulnerable to corrosion, the system uses electromagnetic induction to transmit power wirelessly, substituting a mechanical/electrical system with an electromagnetic field-based system that is immune to environmental corrosion.
2Ease of operation
If exposed electrical conductors are used at the connection point, then charging functionality is achieved, but short-circuit faults occur due to exposure to seawater
Solution Approach 1:
The magnetic field serves as an intermediary that enables power transmission without direct electrical contact. The transmitter on shore generates a magnetic field that penetrates through the environment to induce current in the receiver on the boat, eliminating the need for exposed conductors that could cause short circuits when exposed to seawater.
Solution Approach 2:
The patent employs sealing structures and protective enclosures that act as barriers between electrical components and the marine environment. These protective shells ensure that no electrical conductors are exposed to seawater, preventing short-circuit faults while maintaining charging functionality.
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
The system eliminates risks of electric shock, short circuits, and corrosion, providing a safer and more durable power transmission solution for electric boats and other marine applications.
Implementation Method 1
a resonant inverter configured as a full-bridge LLC resonant inverter, wherein the direct current received by the full-bridge LLC resonant inverter is converted into high-frequency alternating current
Implementation Method 2
a split core transformer configured to receive a resonant power from the resonant inverter
Implementation Method 3
a rectifier assembly configured to receive a transformed resonant power from the split core transformer and transmit the transformed resonant power to a to-be-charged battery
Data Source
AI summary
The invention relates to a magnetically coupled charging system and method. The magnetically coupled charging system comprises: a resonant inverter; a split core transformer configured to receive a resonant power from the resonant inverter; and a rectifier assembly configured to receive a transformed resonant power from the split core transformer and transmit the transformed resonant power to a to-be-charged battery; the split core transformer comprising a primary winding and a secondary winding, wherein the primary and secondary windings are split from each other, the resonant inverter and the primary winding of the split core transformer are arranged in an onshore charging system, the rectifier assembly and the secondary winding of the split core transformer are arranged in an onboard charger. The invention has the following advantages of: eliminating the risk of electric shock and short circuit fault at a connection point and eliminating an arcing or sparking problem.