EV Motor Control Unit Layout for Board Heat Isolation
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Solution Overview
Problem
Existing electrically driven vehicles do not adequately address heat dissipation and thermal effects on control boards, which can affect control characteristics due to heat from other components.
Innovation Solution
A control unit design where a first interface board with high heat generation is positioned above a second interface board with lower heat generation, and a control board, with heat from the first interface directed upwards for dissipation through vents, and symmetrically arranged motor control boards to reduce thermal effects.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Device complexity
If multiple boards are accommodated in a box to form a control unit, then device integration is improved, but thermal effects on control boards worsen due to heat from other boards
Solution Approach 1:
The patent applies vertical spatial arrangement within the box, positioning the high-heat interface board above the control board. This three-dimensional layout strategy utilizes the vertical dimension to separate heat-generating components from heat-sensitive components, allowing heat to dissipate upward while protecting the control board below from thermal effects.
Solution Approach 2:
The patent introduces a heat-resistant plate as an intermediary component positioned between the high-heat interface board and the control board. This heat-resistant plate acts as a thermal barrier, blocking heat transfer from the interface board to the control board while maintaining the integrated box structure.
2Area of stationary object
If interface boards are arranged in a box, then space utilization is improved, but heat dissipation worsens due to confined space
Solution Approach 1:
The patent optimizes heat dissipation by arranging the high-heat interface board vertically above other components, creating an upward heat flow path. This vertical arrangement allows heat to escape through the top of the box more efficiently than horizontal arrangements would permit, improving thermal management within the confined space.
Solution Approach 2:
The patent applies different thermal management strategies to different regions: the upper region houses high-heat components with direct upward dissipation paths, while the lower region houses heat-sensitive control boards protected by heat-resistant plates. This localized quality approach optimizes both space utilization and heat dissipation for each component's specific thermal requirements.
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 reduces thermal impacts on other boards, enhancing control stability and efficiency by directing heat away from critical components.
Implementation Method 1
a first interface board on which at least an interface having a large amount of heat generation is mounted, a second interface board on which an interface having a smaller amount of heat generation than the amount of heat generation of the interface mounted on the first interface board is mounted
Implementation Method 2
by disposing an interface board on which an interface having a large amount of heat generation is mounted in an upper part in a box of a control unit, it is possible to reduce thermal effects on other boards and to favorably dissipate heat
Data Source
AI summary
Provided is a control unit for an electrically driven vehicle, in which thermal effects on a control board and the like is reduced, and heat dissipation is satisfactorily A control unit (20) for an electrically driven performed. vehicle receives an operation signal and signals from various sensors, and outputs control signals for left and right inverters that drive left and right motors connected to left and right wheels, respectively. The control unit (20) includes, in a box (21), a first interface board (25) on which at least an interface with a large amount of heat generation is mounted, a second interface board (26) on which an interface with a smaller amount of heat generation than the interface mounted on the first interface board is mounted, and a control board (24) for generating a control signal. The first interface board (25) is disposed higher than the second interface board (26) and the control board (24) in the box (21).