Adapter Connection Structure Reduces Transmission Loss
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Solution Overview
Problem
Conventional adapters for smaller electronic devices face increased transmission loss and cost due to the need for shorter DC power cables to maintain rated voltage, as longer cables result in voltage drop, necessitating high-quality, expensive cables to minimize loss.
Innovation Solution
The adapter connection structure employs a first converter to convert input power into high-voltage and high-frequency transitional power, which is then transmitted via a transit cable to a second converter that minimizes the DC power cable length and reduces transmission loss, allowing for the use of less expensive cables.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Volume of moving object
If the DC power cable length is increased to reduce adapter size and improve portability, then the adapter becomes more compact and portable, but the transmission loss increases and output voltage drops below rated voltage
Solution Approach 1:
The patent changes the voltage parameter of power transmission by introducing a first converter that steps up the voltage before transmission through the transit cable. This voltage boosting reduces current for the same power level, thereby reducing I²R losses in the cable. The second converter then steps down the voltage to the rated output level, enabling long cable lengths without excessive transmission loss.
2Loss of energy
If high-quality cables are used to reduce transmission loss, then the transmission loss decreases, but the cost of the adapter increases
Solution Approach 1:
The patent uses voltage transformation to change the transmission parameters. By transmitting at higher voltage and lower current through the transit cable, the same cable quality produces less transmission loss. This allows the use of standard-quality cables instead of expensive high-quality cables, reducing overall adapter cost while maintaining acceptable transmission loss levels.
3Loss of energy
If the DC power cable length is limited to below a rational value, then the transmission loss remains acceptable, but the adapter design flexibility and usability are restricted
Solution Approach 1:
The patent fundamentally changes the transmission voltage parameter enabled by the first converter. This voltage step-up allows the transit cable to be made arbitrarily long without the transmission loss constraints that would normally limit cable length. Users can choose from a wide range of cable lengths based on their specific needs without worrying about voltage drop, greatly improving adaptability.
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 approach decreases transmission loss and reduces the overall cost of adapters by enabling longer DC power cables without significant voltage drop, while maintaining efficient power delivery.
Implementation Method 1
The first converter receives an input power via an input terminal and converts the input power into a transitional power
Implementation Method 2
The second converter converts the transitional power into a DC output power of a rated voltage and a rated current
Data Source
AI summary
An adapter connection structure, which includes a first converter and a second converter. The first converter is connected to at least one input terminal to receive an input power and converts the input power into a transitional power. The second converter is connected to the first converter via a transit cable to transmit the transitional power, converts the transitional power into a DC output power and outputs the DC output power via a DC power cable. As the transitional power transmitted from the first converter to the second converter is in the form of a high-voltage and high-frequency AC power or a high-voltage DC power, the power transmission loss in the transit cable is reduced. Therefore, the present invention reduces transmission loss.