Power Transmission Device Vertical Capacitor Mounting
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Solution Overview
Problem
Existing power transmission and receiving devices face issues with increased size and damage due to external loads, as they require additional components like high-frequency power sources and capacitors, leading to protrusion and vulnerability to mechanical stress.
Innovation Solution
The devices integrate power transmission and supply units within a housing, with specific components positioned to minimize size increase and protect against external loads, where first devices are placed around the unit and second devices between the unit and the housing bottom, ensuring a balanced height distribution to prevent protrusion and damage.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Device complexity
If peripheral devices such as high frequency power source and capacitor are disposed around the coil unit, then the power transmission device can be integrated in a single housing, but the size of the housing horizontally increases and the installation area increases
Solution Approach 1:
The patent transitions from horizontal arrangement of devices to vertical arrangement by disposing the capacitor between the coil unit and the bottom surface of the housing. This dimensional change allows the power transmission device to be integrated in a single housing without increasing the horizontal installation area, as the capacitor is positioned in the vertical direction rather than occupying horizontal space around the coil unit.
2Ease of manufacture
If the coil unit is disposed with protruding upward beyond other devices, then the capacitor can be disposed around the coil unit, but a large load is applied to the coil unit from wheels when a vehicle runs on the power transmission device
Solution Approach 1:
The patent positions the capacitor in the vertical direction between the coil unit and the housing bottom, which allows the upper surface of the coil unit to be approximately level with the upper surfaces of surrounding devices. This eliminates the protrusion that would otherwise expose the coil unit to direct mechanical loads from vehicle wheels, thereby protecting the ferrite core from damage while maintaining ease of manufacture.
3Ease of manufacture
If the coil unit largely protrudes downward beyond devices disposed around the coil unit, then the capacitor can be disposed around the coil unit, but when the power receiving device comes into contact with unevenness or obstacles, the coil unit is damaged
Solution Approach 1:
The patent disposes the capacitor vertically between the coil unit and the housing bottom, which prevents the coil unit from largely protruding downward. This configuration ensures that when the power receiving device contacts ground unevenness or obstacles, the coil unit is protected from direct impact damage while maintaining the ease of manufacturing associated with centralized component placement.
4Ease of manufacture
If the capacitor is disposed at a position adjacent to the coil unit, then the mounting is simplified, but the height of the coil unit becomes higher than the capacitor and the coil unit protrudes upward
Solution Approach 1:
The patent positions the capacitor vertically between the coil unit and the housing bottom rather than adjacent to it in the horizontal plane. This vertical arrangement simplifies mounting while preventing the coil unit from protruding upward beyond the housing level, as the capacitor's position in the vertical direction allows it to support the coil unit without creating height differential issues.
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 configuration reduces the installation area and prevents damage from external loads, maintaining a compact form and enhancing durability by distributing the load evenly and reducing the risk of coil unit damage.
Implementation Method 1
power transmission systems using power transmission devices and power receiving devices for transmitting and receiving power in a noncontact manner
Implementation Method 2
a capacitor connected to the coil are provided
Data Source
AI summary
A power transmission device for transmitting power to a power receiving device in a noncontact manner, including: a power transmission unit for transmitting power to the power receiving device in a noncontact manner; a power supply unit, connected to an external power supply, for supplying power to the power transmission unit, and a housing housing the power transmission unit and the power supply unit, wherein the power supply unit includes first devices disposed around the power transmission unit, and a second device disposed between the power transmission unit and a bottom surface, in a state where the power transmission unit and the power supply unit are mounted on the bottom surface of the housing, and a height of each of the first devices from the bottom surface is higher than a height of the second device from the bottom surface.