Side-Coil Contactless Power Supply for Moving Mobile Bodies
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Solution Overview
Problem
Existing conveyance systems using mobile bodies like AGVs or autonomous forklifts for transferring work objects face inefficiencies due to the need for the mobile bodies to stop near power transmission apparatuses for contactless power supply, affecting conveyance efficiency and requiring additional space for power transmission setups.
Innovation Solution
A contactless power supply system that allows power transmission to mobile bodies at scheduled stop positions within their movement path or while moving, with power reception coils on side surfaces, eliminating the need for separate power transmission setups outside the path and enabling efficient power transfer without disrupting movement.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Use of energy by moving object
If the mobile body stops near power transmission apparatuses for contactless power supply, then power can be transmitted to the mobile body, but conveyance efficiency deteriorates due to unnecessary stopping
Solution Approach 1:
The power transmission apparatus is designed to move along with the mobile body, changing its position dynamically to maintain optimal alignment with the power reception apparatus. This allows power transmission during movement without requiring the mobile body to stop, thereby maintaining conveyance efficiency while enabling continuous power supply.
2Use of energy by moving object
If power transmission apparatuses are set up outside the movement path, then contactless power supply can be provided, but additional space is required
Solution Approach 1:
The power transmission apparatus is integrated into the mobile body itself, merging the power transmission function with the mobile body structure. This eliminates the need for separate power transmission apparatuses positioned outside the movement path, thereby reducing the required space while maintaining contactless power supply capability.
3Productivity
If the power reception coil is provided on the side surface of the mobile body, then power transmission during movement is enabled, but the alignment with power transmission apparatus becomes more challenging
Solution Approach 1:
Both the power transmission apparatus and the mobile body are designed to move in coordination, with the power transmission apparatus adjusting its position dynamically to maintain proper alignment with the side-mounted power reception coil. This dynamic positioning system ensures effective power transmission during movement despite the challenging side-surface configuration.
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 conveyance efficiency by allowing power transfer during movement, reduces space requirements, and simplifies system construction by eliminating the need for underground or floor-based power transmission apparatuses.
Implementation Method 1
The power transmission apparatus is capable of supplying power to the power reception apparatus without contact
Implementation Method 2
The power reception apparatus includes at least a power reception coil provided on a side surface side of the mobile body
Data Source
AI summary
A contactless power supply system includes a mobile body and a power transmission apparatus. The mobile body includes a power reception apparatus, and transfers a work object from a first work site to a second work site. The power transmission apparatus is capable of supplying power to the power reception apparatus without contact in a state in which the mobile body is stopped at at least a scheduled stop position at which the mobile body is scheduled to stop within a movement path of the mobile body between the first work site and the second work site, or the mobile body is moving. The power reception apparatus includes at least a power reception coil provided on a side surface side of the mobile body.