Power Conversion Module Layout for Cooler Fast-Charging Phones
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Solution Overview
Problem
Electronic devices, such as mobile phones, experience rapid temperature increases during quick charging, leading to overheating and slowed charging speeds due to heat generation from both the charging module and processor, especially when used during charging.
Innovation Solution
The electronic device is designed with a first and second power conversion module and battery, where the distance between the battery and power conversion module is minimized, and the power conversion modules are positioned away from the processor, dispersing heat sources and reducing overall heat dissipation, thereby delaying or avoiding thermal limit temperatures and improving charging speed.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Device complexity
If the power conversion module is placed close to the processor to reduce layout complexity, then device complexity is reduced, but temperature rise increases due to heat accumulation
Solution Approach 1:
The patent transitions from planar 2D layout to 3D spatial arrangement by placing the power conversion module on the back cover assembly rather than the main circuit board. This dimensional change allows both the processor and power conversion module to be positioned optimally without spatial conflict, reducing heat accumulation while maintaining layout simplicity.
2Productivity
If quick charging power is increased to improve charging speed, then charging speed is improved, but heat generation amount increases
Solution Approach 1:
The patent extracts the power conversion module from the main device body and relocates it to the back cover assembly. This separation removes the primary heat generation source from the internal environment, allowing high-power quick charging to proceed without excessive heat accumulation that would otherwise limit charging speed.
Solution Approach 2:
The back cover assembly serves as an intermediary thermal management structure between the power conversion module and the user/device interior. It provides thermal isolation and dissipation pathways, enabling high-power charging by mediating the heat transfer away from sensitive components.
3Temperature
If the power conversion module is positioned away from the battery to reduce heat impact on battery, then temperature rise is reduced, but current path length increases causing more heat generation
Solution Approach 1:
The patent utilizes the third dimension (depth/thickness of device) by positioning the power conversion module on the back cover assembly rather than extending the current path horizontally across the main board. This vertical arrangement minimizes current path length while maintaining thermal separation between the power conversion module and battery.
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 effectively disperses heat sources, slowing temperature rises and preventing overheating, thus enhancing charging speed and duration by maintaining power conversion modules' normal operation while reducing heat generation during both use and standby states.
Implementation Method 1
a heat generation amount during charging is further increased
Implementation Method 2
overall heat dissipation of the electronic device is uniform
Implementation Method 3
temperature rise is slow
Data Source
AI summary
This application provides an electronic device in which a distance between a connection end of a first battery and a first power conversion module corresponding to the first battery is within a certain small range, which can reduce a length of a current path between the first power conversion module and the first battery, and avoid corresponding heat generation. In addition, a distance between the first power conversion module and a processor is relatively long.