Wireless Charging Coil Unit With Removable Core for Easier Maintenance
Find Innovative SolutionsGenerate Solutions
Solution Overview
Problem
Existing power transmission side devices in vehicles with secondary batteries face maintenance challenges due to complex and time-consuming operations when buried in travel paths, affecting maintainability and efficiency.
Innovation Solution
A coil unit design featuring a core member with a frame-shaped wall portion and a lid portion that opens and closes, allowing easy access to internal components, along with a support member with a through-hole for enhanced visibility and exposure, facilitating easier maintenance and alignment with power receiving devices.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Productivity
If the power transmission side coil unit is buried in the travel path while being accommodated in a casing, then the charging and supplying output and efficiency are ensured, but the maintainability of power transmission side devices deteriorates due to complicated and time-consuming maintenance operations
Solution Approach 1:
The coil unit is divided into separable components: the casing (11) that accommodates the coil (21), and the core member (12) that can be independently removed. This segmentation allows maintenance personnel to access and service the coil and other internal devices by simply removing the core member from the casing, without needing to excavate the entire buried unit, thus improving maintainability while preserving charging output.
Solution Approach 2:
The core member (12) is extracted as a separate removable component from the casing (11). By taking out the core member, maintenance personnel can easily access the coil (21) and other devices housed within the hollow inner space (12e) for inspection, repair, or replacement, significantly reducing the complexity and time required for maintenance operations while the unit remains buried in the travel path.
2Productivity
If the power transmission side coil unit is buried in the travel path, then the charging and supplying output are ensured, but the maintenance operations require complicated and time-consuming work
Solution Approach 1:
The coil unit is divided into separable components: the casing (11) that accommodates the coil (21), and the core member (12) that can be independently removed. This segmentation allows maintenance personnel to access and service the coil and other internal devices by simply removing the core member from the casing, without needing to excavate the entire buried unit, thus improving maintainability while preserving charging output.
Solution Approach 2:
The core member (12) is extracted as a separate removable component from the casing (11). By taking out the core member, maintenance personnel can easily access the coil (21) and other devices housed within the hollow inner space (12e) for inspection, repair, or replacement, significantly reducing the complexity and time required for maintenance operations while the unit remains buried in the travel path.
3Device complexity
If the lid portion is buried in the travel path, then the power transmission structure is compact, but the distance between the power receiving device and the coil unit increases
Solution Approach 1:
The lid portion (12c) is designed as a movable component that can be dynamically adjusted between a closed position (when buried in the travel path) and an open position (when raised). This dynamic design allows the system to maintain a compact buried structure for normal operation while enabling the lid to be raised to reduce the distance between the power receiving device and the coil unit during power transmission, thereby resolving the contradiction between structural compactness and transmission efficiency.
4Device complexity
If the lid portion is buried in the travel path, then the power transmission structure is compact, but the visibility for guiding the moving object to the coil unit is reduced
Solution Approach 1:
The lid portion (12c) is designed as a movable component that can be dynamically adjusted between a closed position (when buried in the travel path) and an open position (when raised). This dynamic design allows the system to maintain a compact buried structure for normal operation while enabling the lid to be raised to reduce the distance between the power receiving device and the coil unit during power transmission, thereby resolving the contradiction between structural compactness and transmission efficiency.
Solution Approach 2:
The lid portion (12c) can be designed with high-visibility features such as reflective surfaces, fluorescent materials, or LED indicators that enhance its visibility when raised. These visual enhancements make it easier to guide moving objects (such as vehicles or equipment) to the correct position on the coil unit, resolving the contradiction between maintaining a compact buried structure and providing sufficient visibility for alignment and guidance.
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
Improves maintainability and efficiency by allowing easy exposure of internal components, reducing the distance and magnetic path length, and enhancing alignment accuracy for improved power transmission.
Implementation Method 1
a coil (21) that transmits power to a power receiving device (T) in a non-contact manner
Implementation Method 2
the core member (12) that improves the coupling coefficient by being disposed in the air core region of the coil (21)
Data Source
AI summary
A coil unit includes: a coil which transmits power to a power receiving device in a non-contact manner; a casing which accommodates the coil; and a core member that is inserted into an air core region of the coil and penetrates the casing to protrude outward, wherein the core member includes a frame-shaped wall portion which is disposed in the air core region and a lid portion which opens and closes an opening end of the wall portion.