Asynchronous Graphics Card Thermal Management

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Solution Overview

Problem

Existing fan speed control systems for heat dissipation in computers face challenges such as synchronous rotational speed adjustments that may not be timely responsive, leading to inefficient power consumption and inadequate heat removal, especially when dealing with varying temperatures across different heat sources, and lack of control over overall airflow within the computer enclosure.

Innovation Solution

A temperature monitoring system that individually controls heat dissipation devices on a graphics card and power supply circuit based on temperature readings from dedicated sensors, with a control device managing the output power of these devices and collaborating with an external fan to enhance airflow and reduce internal system temperature.

Engineering Contradictions & Design Principles

VSEngineering Contradiction Analysis

1Loss of energy

If synchronous fan speed adjustment is used for all heat sources, then power consumption is reduced during low-temperature operation, but heat removal efficiency deteriorates for high-temperature heat sources

Engineering Contradiction:

Improvepower consumptionVSAvoidheat removal efficiency

Core Design Contradiction:

Loss of energyVSProductivity

Solution Approach 1:

The patent divides the fan control into independent segments for each heat source. Each heat dissipation device has its own fan speed control mechanism that responds independently to local temperature conditions, allowing individual optimization rather than synchronous adjustment of all fans.

Inventive Principle:

Principle #1Segmentation

Solution Approach 2:

The patent implements local quality control by assigning different fan speeds to different heat dissipation devices based on their respective temperature conditions. Each heat source is controlled according to its local thermal state, enabling high-temperature areas to receive higher fan speeds while low-temperature areas operate at reduced speeds.

Inventive Principle:

Principle #3Local quality

2Device complexity

If passive fan speed adjustment based on temperature measurement is used, then system simplicity is maintained, but response time deteriorates when heat sources generate huge heat

Engineering Contradiction:

Improvesystem simplicityVSAvoidresponse time

Core Design Contradiction:

Device complexityVSLoss of time

Solution Approach 1:

The patent implements preliminary action through advance fan speed adjustment. When temperature reaches predetermined thresholds, the fan speeds are increased proactively before the heat sources can reach dangerous temperature levels. This anticipatory control mechanism ensures timely response to heat generation without requiring complex real-time processing.

Inventive Principle:

Principle #10Preliminary action

3Productivity

If independent control of graphics card fan is used, then heat dissipation effectiveness is improved for the graphics processor, but overall airflow control within the computer enclosure deteriorates

Engineering Contradiction:

Improveheat dissipation effectivenessVSAvoidoverall airflow control

Core Design Contradiction:

ProductivityVSAdaptability or versatility

Solution Approach 1:

The patent merges the control of multiple independent fans into a unified system. The control unit coordinates and manages all fan speeds simultaneously, enabling collaborative operation that optimizes both individual heat dissipation effectiveness and overall airflow patterns within the computer enclosure.

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

This solution allows for timely and efficient power distribution to heat dissipation devices, reducing electrical consumption and effectively managing heat dissipation across multiple heat sources, while also improving overall airflow and temperature control within the computer enclosure.

Implementation Method 1

at least one first temperature sensor is arranged at one side of the first heat dissipation device. A second heat dissipation device is arranged on the power supply circuit and a plurality of second temperature sensors are arranged at one side of the second heat dissipation device

Methodology Applied

Scientific EffectTemperature sensing:

Implementation Method 2

Effective and timely removal of thermal energy generated by a large number of heat sources (including a central processing, a graphics card, and a power supply device) is now one of the major factors that affect long-term operation of modern computers

Methodology Applied

Scientific EffectHeat dissipation: Convection

Data Source

PatentUS11829217B2Asynchronous temperature control integrated device

Publication Date: 2023.11.28 EVGA CORPORATION

AI summary

An asynchronous temperature control integrated device includes a graphics card body including a graphics processor and a power supply circuit, at least one external fan connection port, a first heat dissipation device, at least one first temperature sensor, a second heat dissipation device, a plurality of second temperature sensors, a plurality of light emission elements, and a control device including an externality control member, a high-power drive module, and a scenario database. Thus, two groups of heat dissipation device and temperature sensor are provided to respectively detect the temperatures of two major heat sources on the graphics card body, and the heat dissipation performances of the two heat dissipation devices are individually controllable to make timely and efficient operations of the heat dissipation devices, and also to collaboratively drive an external fan to thereby enhance overall airflow, reduce system internal temperature, and achieve bettered conditions of temperature control.