Power Conversion Device Airflow Channel Heat Dissipation
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Solution Overview
Problem
Conventional power conversion devices face limitations in miniaturization and high power density due to reduced width, which deteriorates heat dissipation efficiency and performance, as the concentration of electronic components along the width direction increases the power transmission area requirements, leading to unsatisfactory performance.
Innovation Solution
A power conversion device design featuring a main board with an airflow channel defined by a gap between the input conversion module's first and second parts, along with strategically placed output conversion, filtering, and controlling modules, enhances heat dissipation by creating pathways for airflow, thereby improving efficiency and reducing layout space.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Productivity
If the width of the power conversion device is reduced to increase the number of devices in the power rack, then the power rack can accommodate more devices and increase output power, but the power transmission area becomes insufficient and heat dissipation efficiency deteriorates
Solution Approach 1:
The patent introduces an airflow channel dimension by creating a gap between the first and second parts of the input conversion module. This gap forms a three-dimensional heat dissipation pathway that extends vertically through the device, allowing heat to be removed via airflow in the depth direction rather than being constrained to two-dimensional conduction paths on the circuit board plane.
Solution Approach 2:
The input conversion module is divided into two separate parts (first part with power switches and second part with non-power switches) with a gap between them. This segmentation creates the airflow channel while also separating heat-generating components from other components, improving both heat dissipation and electrical isolation.
2Volume of moving object
If the width of the power conversion device is reduced to achieve miniaturization, then the device size decreases and power density increases, but the power transmission area becomes limited and performance deteriorates
Solution Approach 1:
The patent utilizes the vertical dimension by creating an airflow channel that extends through the device height. This allows heat dissipation to occur in the vertical direction rather than competing for horizontal space, enabling the device to maintain adequate power transmission area while reducing overall footprint.
Solution Approach 2:
By segmenting the input conversion module into two parts with a gap, the design creates efficient current pathways while maintaining compact dimensions. The separation allows for optimized trace routing and reduces electromagnetic interference, improving power transmission efficiency in a reduced form factor.
3Area of stationary object
If electronic components are concentrated along the width direction to reduce device width, then the device becomes more compact, but heat dissipation efficiency deteriorates due to increased component density
Solution Approach 1:
The patent redirects heat dissipation from the horizontal plane to the vertical dimension by creating an airflow channel that passes through the device in the depth direction. This allows heat from concentrated components to be removed via convection in the vertical direction, decoupling component density from heat dissipation capability.
Solution Approach 2:
The segmentation of the input conversion module creates intentional spacing and airflow pathways that prevent heat accumulation. The gap between the first and second parts serves as both an electrical isolation barrier and a thermal management channel, allowing heat to escape from concentrated components.
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 design effectively increases heat dissipation efficiency, enhances power density, and reduces costs by allowing for more compact and high-performance power conversion devices.
Implementation Method 1
An airflow channel is defined by the gap. The output conversion module is installed on the main board and located near the second edge
Data Source
AI summary
A power conversion device includes an input conversion module, an output conversion module, a filtering module and a controlling module, which are installed on a main board. The main board includes a first edge, a second edge, a third edge and a fourth edge. The first edge and the second edge are opposed to each other. The third edge and the fourth edge are opposed to each other. A first part of the input conversion module is located near the first edge and the third edge. A second part of the input conversion module is near the first edge and the fourth edge. An airflow channel is formed between the first part and the second part. The output conversion module is near the second edge. The filtering module is near the second edge. The controlling module is arranged between the first part and the third edge.