Power supply system and wireless power supply method
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Solution Overview
Problem
The existing power supply systems for reefer containers require separate power-supplying units at each container, leading to increased installation space and reduced space utilization efficiency, limiting the number of containers that can be stored.
Innovation Solution
A power supply system with movable power-receiving units that include both power-receiving and power-supplying devices, allowing for wireless power transfer between units, reducing the need for separate power-supplying units and enhancing space utilization by enabling power distribution among containers.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Reliability
If separate power-supplying units are provided at each container, then reliable power supply is achieved, but installation space increases and space utilization efficiency deteriorates
Solution Approach 1:
The patent combines the power-supplying unit and power-receiving unit into an integrated power supply system. Instead of providing separate power-supplying units at each container, the system uses a centralized power supply that wirelessly transmits power to multiple containers simultaneously, reducing the total installation space while maintaining reliable power supply to all containers.
Solution Approach 2:
The power supply system is designed with multi-functionality to serve multiple containers through a single infrastructure. The wireless power transmission capability allows one power supply installation to serve multiple containers, making the system universal rather than requiring dedicated units at each location.
2Reliability
If separate power-supplying units are provided at each container, then independent power supply is achieved, but the number of containers that can be stored decreases
Solution Approach 1:
By merging multiple power supply functions into a single wireless power transmission system, the patent enables one power supply installation to serve multiple containers. This consolidation increases the number of containers that can be stored in the facility while maintaining independent power supply capability through wireless transmission to each container's power-receiving unit.
3Area of stationary object
If power-supplying units are reduced, then space utilization efficiency improves, but power supply capability must be maintained
Solution Approach 1:
The patent replaces the mechanical/electrical connection system with a wireless electromagnetic field-based power transmission system. This substitution eliminates the need for physical power supply infrastructure at each container location, improving space utilization efficiency while maintaining full power supply capability through wireless electromagnetic energy transfer.
Solution Approach 2:
The system changes the fundamental parameter of power transmission from wired to wireless, enabling power supply without physical infrastructure at each container. This parameter change allows space optimization while preserving power supply capability through electromagnetic field transmission.
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
This solution allows for efficient power distribution among multiple containers while minimizing the number of power-supplying units required, thereby maximizing space utilization and enabling power transfer without the need for individual power-supplying units at each container.
Implementation Method 1
the power-receiving device, the power-supplying device and the power-supplying unit are configured to wirelessly receive or supply electric power through an electromagnetic coupling between the power-receiving coil and the power-transmitting coil
Data Source
AI summary
The power supply system includes: movable power-receiving units, each power-receiving unit including at least one power-receiving device used to receive electric power from outside of the power-receiving unit and at least one power-supplying device used to supply, to the outside of the power-receiving unit, at least part of electric power received by the power-receiving device; and a power-supplying unit used to supply electric power to the power-receiving device of one power-receiving unit of the power-receiving units.