Cover Unit with Elastic Bag for Wireless Power-Receiving Coil Protection
Find Innovative SolutionsGenerate Solutions
Solution Overview
Problem
The power-receiving coil on vehicles is prone to damage from external impacts, such as foreign objects, which can degrade power supply reliability.
Innovation Solution
A cover unit with a cover member and a bag that can expand and contract to open and close, protecting the power-receiving coil during vehicle operation while allowing power supply by opening when necessary.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Strength
If the power-receiving coil is installed directly on the bottom of the vehicle without a cover, then the structure is simple and easy to manufacture, but the coil is vulnerable to damage from foreign objects and impacts
Solution Approach 1:
The patent applies a flexible cover member that can be opened and closed to protect the power-receiving coil. The cover member is configured to cover the coil in a closed state to prevent damage from foreign objects, while being openable to allow power supply. This flexible protective structure resolves the contradiction by providing strength/protection without requiring a complex rigid enclosure.
2Reliability
If a cover member is provided to protect the power-receiving coil, then the coil is protected from damage, but the cover member may interfere with power supply if not properly positioned
Solution Approach 1:
The patent employs a dynamic cover member that can transition between open and closed states. The cover member is configured to be open during power supply to avoid interference with the magnetic field and power transmission, and closed during vehicle operation to provide protection. This dynamic positioning resolves the contradiction by ensuring both protection and uninterrupted power supply operation.
3Strength
If the cover member is always in the closed state to protect the coil, then the coil is continuously protected, but power supply is blocked when the vehicle is stationary and needs charging
Solution Approach 1:
The patent implements periodic action by transitioning the cover member between closed and open states based on operational requirements. The cover is closed during vehicle movement to provide protection, and opened during stationary charging to enable power supply. This periodic switching resolves the contradiction by providing continuous protection during operation while ensuring uninterrupted power supply during charging.
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
Prevents damage to the power-receiving coil and ensures continuous appropriate power supply to the vehicle by shielding it during impacts and allowing power transmission when required.
Implementation Method 1
a power-receiving coil mounted on a movable body and to which power is wirelessly supplied from a power-supplying coil
Implementation Method 2
a bag configured to expand and contract and to open and close the cover member
Data Source
Figure 1
Figure 2A~2B
Figure 3
AI summary
A wireless power-supplying system (1) includes a power-supplying coil (15) disposed on a ground contact surface side, a power-receiving coil (21) mounted on a movable body and to which power is wirelessly supplied from the power-supplying coil (15), a cover member (31) provided in the movable body and configured to be opened and closed and cover the power-receiving coil in a closed state, and a bag (33, 33A) configured to expand and contract and to open and close the cover member.