Converter Module Cooling Channel Layout for Uniform Heat Dissipation
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Solution Overview
Problem
Existing converter cabinets dissipate heat from the bottom of converter modules inadequately, leading to non-uniform heat dissipation and increased ambient temperatures that can exceed the maximum allowable working temperature, particularly in compact stacked structures.
Innovation Solution
A converter module design with a heat dissipation passage enclosed by a housing and converter body, featuring air ducts on two sides, including an upper, lower, and vertical air ducts, with a fan to circulate airflow for uniform heat dissipation, and a windshield baffle to ensure even airflow distribution.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Power
If the inverter is divided into multiple modules connected in parallel, then the current carrying capacity is improved, but the number of connection terminals increases leading to more welding points and higher production costs
Solution Approach 1:
The patent combines multiple connection terminals into a single integrated connection piece that electrically connects all modular units. This connection piece has multiple connection areas facing different directions, allowing it to connect to multiple terminals simultaneously, thereby reducing the number of separate connection components needed while maintaining the parallel modular architecture for high current capacity.
2Power
If multiple connection terminals are provided for parallel modular connection, then the current carrying capacity is improved, but the welding production cost increases due to more welding points
Solution Approach 1:
The connection piece integrates multiple connection areas into a single component that can be welded once to the housing while providing electrical connection to multiple terminals. This reduces the total number of welding operations required compared to having separate connection pieces for each terminal, thereby lowering welding production costs while maintaining the ability to handle high currents through parallel modular connection.
3Ease of operation
If the connection terminal is arranged at the front side for easy connection, then the ease of operation is improved, but the current path length increases leading to higher inductance
Solution Approach 1:
The connection piece extends in multiple spatial directions with connection areas facing different sides (front, rear, left, right). This three-dimensional arrangement allows connection terminals to be accessed from various directions, maintaining ease of operation while keeping the current path length short by providing direct connection points close to the modular units.
4Device complexity
If a single connection terminal is used, then the device complexity is reduced, but the current carrying capacity is insufficient for high power applications
Solution Approach 1:
The inverter is segmented into multiple modular units that can be connected in parallel. Each modular unit has its own connection terminal, and the connection piece provides multiple connection areas to connect these terminals. This segmentation allows the system to achieve high current carrying capacity through parallel connection while keeping each individual module simple and manageable.
Data Source
Figure 1
Figure 2~3
AI summary
Disclosed is an inverter module, comprising a housing and an inverter body mounted within the housing. The housing and the inverter body are joined to form a cooling channel. A fan is mounted in the cooling channel. An air inlet and an air outlet in communication with the cooling channel are provided on the housing. The cooling channel is distributed at two sides of the inverter body. In the inverter module described above, the housing and the inverter body are joined to form the cooling channel, and the cooling channel at least is distributed at either side of the inverter body, thus allowing a cooling airflow to cool the inverter body from either side, favoring the implementation of even cooling, and increasing the cooling effect. Also disclosed is an inverter cabinet, which is applicable for the inverter module described above and provides an excellent cooling effect.