Charger Heat Insulating Structure for Surface Temperature Control
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Solution Overview
Problem
As mobile device chargers with increased output generate more heat, leading to elevated surface temperatures, users experience discomfort and risk of low temperature burns when handling these devices, due to the difficulty in effectively dissipating heat in compact designs.
Innovation Solution
A charger with a heat insulating structure that includes a case, a printed circuit board, and heat insulating members to block heat transfer from electronic components to the case surface, using materials and configurations such as integral or separate heat insulating members, air layers, and recessed designs to maintain a compact size while reducing surface temperature.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Power
If the output of the charger is increased to meet higher power consumption demands, then the charging capability is improved, but heat generated inside the charger increases causing the surface temperature to rise
Solution Approach 1:
A heat insulating member is introduced as an intermediary substance between the heat-generating electronic components and the case. This insulating member blocks heat transfer from the circuit board to the case, preventing the case surface temperature from rising excessively while allowing the charger to maintain high output power capability.
Solution Approach 2:
The charger is segmented into distinct thermal zones by positioning heat insulating members at specific locations where heat transfer occurs. This segmentation allows different parts of the charger to have different thermal characteristics - the internal components can operate at high temperatures for efficient power conversion while the external case remains cool to the touch.
2Volume of moving object
If the charger is designed in a compact size to meet portability demands, then the device portability is improved, but heat dissipation becomes difficult causing internal temperature to rise
Solution Approach 1:
Heat insulating members are nested within the compact charger structure, positioned between the circuit board and the case. This nesting approach allows the insulating elements to be integrated into the limited internal space of the compact charger without significantly increasing its external dimensions, while still providing effective heat blocking functionality.
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
The heat insulating structure effectively suppresses heat transfer, preventing users from feeling uncomfortable or experiencing burns when handling the charger, by maintaining a lower surface temperature through strategic placement and material selection of heat insulating members.
Implementation Method 1
a heat insulating member disposed inside the case and formed to cover the electronic components mounted on the rear surface of the printed circuit board to block heat generated from the electronic components of the printed circuit board from being transferred to an entire surface of the case
Data Source
AI summary
A charger having a heat insulating structure is provided. The charger includes: a case having one side at which an opening is formed and the other side to which a terminal portion is coupled; a printed circuit board having a front surface and a rear surface on which electronic components are mounted, respectively, and inserted into the case through the opening of the case; a heat insulating member disposed inside the case and formed to cover the electronic components mounted on the rear surface of the printed circuit board to block heat generated from the electronic components of the printed circuit board from being transferred to an entire surface of the case; and a cover closing the opening of the case.