Inverter Heat Sink With Temperature Equalizing Plate

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Solution Overview

Problem

Conventional heat dissipation devices for inverters suffer from limited heat dissipation efficiency due to one-dimensional heat conduction capacity of heat pipes and reduced performance when bent, leading to inefficient heat transfer.

Innovation Solution

A heat dissipation device incorporating a heat sink base, a cooling module, and a temperature equalizing plate with part mounting seats, where the temperature equalizing plate acts as a two-dimensional heat-conduction structure, enhancing heat dissipation by conducting heat across its entire surface to the heat sink base and cooling module.

Engineering Contradictions & Design Principles

VSEngineering Contradiction Analysis

1Productivity

If heat pipes are used for heat dissipation, then heat can be conducted from the heat sink base, but the one-dimensional heat conduction capacity limits the overall heat dissipation efficiency

Engineering Contradiction:
Improveheat dissipation efficiencyVSAvoidheat conduction structure
Core Design Contradiction:
ProductivityVSDevice complexity

Solution Approach 1:

The patent transitions from one-dimensional heat conduction through heat pipes to two-dimensional heat conduction through a temperature equalizing plate. The plate spreads heat laterally across its surface area before vertical conduction to cooling modules, fundamentally changing the heat flow geometry to improve dissipation capacity.

Inventive Principle:
Principle #17Another dimension (Dimensionality change)

Solution Approach 2:

The temperature equalizing plate integrates multiple functions: it serves as a heat spreading element, a mounting platform for power devices, and a structural component that connects to multiple cooling modules. This consolidation improves heat dissipation efficiency without proportionally increasing device complexity.

Inventive Principle:
Principle #5Merging (Combining)

2Ease of operation

If heat pipes are bent during assembly, then mounting flexibility is improved, but the heat transfer performance is reduced

Engineering Contradiction:
Improvemounting flexibilityVSAvoidheat transfer performance
Core Design Contradiction:
Ease of operationVSReliability

Solution Approach 1:

The temperature equalizing plate provides a rigid, planar mounting surface that maintains dimensional stability. Unlike bent heat pipes, the plate does not require deformation for mounting, thereby preserving its thermal conduction properties while enabling flexible system integration through its stable geometry.

Inventive Principle:
Principle #17Another dimension (Dimensionality change)

3Productivity

If multiple heat pipes are used to increase heat conduction power, then heat dissipation capacity improves, but the device complexity and processing difficulty increase

Engineering Contradiction:
Improveheat conduction powerVSAvoidnumber of heat pipes
Core Design Contradiction:
ProductivityVSDevice complexity

Solution Approach 1:

The patent consolidates the function of multiple heat pipes into a single temperature equalizing plate that provides two-dimensional heat spreading. This single component replaces what would otherwise require multiple separate heat pipe elements, reducing device complexity while achieving superior heat conduction power through area-based thermal management.

Inventive Principle:
Principle #5Merging (Combining)

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 solution significantly improves heat dissipation efficiency by allowing heat to be dissipated quickly across the entire surface of the temperature equalizing plate and then conducted to the heat sink base and cooling module, overcoming the limitations of one-dimensional heat pipes and potential mounting issues.

Implementation Method 1

the temperature equalizing plate acts as a two-dimensional heat-conduction structure, enhancing heat dissipation by conducting heat across its entire surface to the heat sink base and cooling module

Methodology Applied
Scientific EffectHeat conduction: Conduction (thermal)

Implementation Method 2

a cooling module for dissipating heat from the heat sink base

Methodology Applied
Scientific EffectHeat dissipation: Heat Sink

Data Source

PatentEP3787387A1Inverter and heat dissipation device thereof
Publication Date: 2021.03.03 SUNGROW POWER SUPPLY CO LTD
  • EP3787387A1 patent drawingFigure 1
  • EP3787387A1 patent drawingFigure 2~3
  • EP3787387A1 patent drawingFigure 4

AI summary

A heat dissipation device of an inverter is provided disclosed by the present application, which includes a heat sink base, a cooling module and a temperature equalizing plate arranged on the heat sink base. The cooling module is configured to dissipate heat from the heat sink base, the temperature equalizing plate is provided with a part mounting seat, and the heat sink base is arranged between the cooling module and the temperature equalizing plate. When in use, the heat sink base is mounted on the cooling module, the temperature equalizing plate is mounted on the heat sink base, and a part is mounted on the part mounting seat. In the heat dissipation device provided by the present application, since the temperature equalizing plate serves as a two-dimensional planar heat-conduction structure, the heat of the part is dissipated through the entire surface of the temperature equalizing plate, and then the heat is conducted to the heat sink base and the cooling module far more quickly. Therefore, the heat dissipation efficiency of the heat dissipation device is improved.