Bracket Slits Reroute PCB Heat Away From Battery
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Solution Overview
Problem
Electronic devices experience significant temperature differences across the battery due to direct heat radiation from circuit parts on the PCB, leading to safety concerns and performance imbalances.
Innovation Solution
A heat-radiating structure is introduced between the PCB and the bracket, featuring slits and heat conducting members to redirect heat away from the battery, preventing direct heat conduction and promoting even temperature distribution.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Temperature
If heat radiation from circuit parts on the PCB is directly delivered through the bracket to the battery, then heat transfer efficiency is improved, but temperature differences per position in the battery increase significantly
Solution Approach 1:
The bracket is segmented into multiple heat-radiating structures including protrusions and recesses that divide the heat transfer path. These structures create multiple discrete heat transfer zones rather than allowing uniform direct heat conduction, thereby distributing temperature more evenly across the battery surface while maintaining effective heat dissipation.
Solution Approach 2:
The heat-radiating structures are strategically positioned at specific locations where heat generation is highest. The protrusions and recesses are configured to locally enhance heat radiation in critical areas while providing thermal isolation in other regions, creating non-uniform heat distribution that prevents hot spots on the battery.
2Temperature
If heat-radiating structures are added between PCB and bracket, then temperature differences in battery are reduced, but device complexity increases
Solution Approach 1:
The heat-radiating structures are integrated directly into the bracket body, merging the thermal management function with the structural support function. The protrusions and recesses are formed as part of the bracket's monolithic structure rather than being separate components, thereby reducing assembly complexity while achieving temperature uniformity.
Solution Approach 2:
The bracket serves multiple functions simultaneously: it provides structural support for the PCB and battery, acts as a heat sink, and incorporates heat-radiating structures for thermal management. This multi-functionality eliminates the need for separate thermal management components, reducing overall device complexity.
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 effectively reduces temperature differences across the battery, enhancing its stability and performance by rerouting heat away from critical areas, thus preventing overheating and charging imbalances.
Implementation Method 1
heat radiation from some circuit parts on the PCB are directly delivered through the bracket to the battery
Implementation Method 2
heat radiation from some circuit parts on the PCB are directly delivered through the bracket to the battery
Data Source
Figure 1
Figure 2A
Figure 2B
AI summary
A portable communication device is provided. The portable communication device includes a battery, a printed circuit board including one or more circuit devices driven using power from the battery, and a bracket including a first area for receiving the battery and a second area for receiving the printed circuit board, wherein a slit is formed in at least a portion of a boundary area of the first area and the second area to reduce heat spread. According to an embodiment of the present disclosure, in an electronic device, a heat-radiating structure is provided between a PCB and a bracket where a battery is seated, rerouting the path along which heat radiation from some circuit devices on the PCB flow to the battery to suppress a rise in temperature in the battery.