Hybrid Vehicle Electrical Part Fixing Structure
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Solution Overview
Problem
The existing electrical part fixing structures for hybrid vehicles under a floor panel face limitations due to heat transmission from the exhaust pipe, affecting the spatial arrangement and heat balance of electrical components like the junction box, which lacks forced cooling and is susceptible to external heat influx.
Innovation Solution
The proposed solution involves positioning the battery charger above the exhaust pipe, incorporating a junction box above the charger, and providing a cooler with forced cooling functions, along with a heat-shielding cover to minimize heat transmission from the exhaust pipe to the electrical components, allowing for efficient arrangement and heat management.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Area of stationary object
If electrical parts are arranged under the floor panel near the exhaust pipe to optimize space utilization, then the available space for electrical part arrangement is improved, but the heat transmission from the exhaust pipe to electrical parts increases
Solution Approach 1:
The patent applies vertical stacking arrangement, placing the battery charger above the exhaust pipe and the junction box above the battery charger, utilizing the vertical dimension to optimize space utilization while maintaining safe distances from heat sources. This dimensional transition resolves the contradiction by arranging components in the Z-direction rather than competing for horizontal space.
Solution Approach 2:
The patent introduces a cooler as an intermediary component between the exhaust pipe and the battery charger. The cooler actively manages heat transmission by providing forced cooling to the battery charger, thereby protecting electrical parts from excessive heat while maintaining compact spatial arrangement.
2Productivity
If the junction box is positioned closer to the exhaust pipe to improve spatial efficiency, then the spatial arrangement efficiency is improved, but the heat balance of the junction box deteriorates
Solution Approach 1:
The junction box is positioned in the vertical dimension above the battery charger, creating a stacked arrangement that improves spatial efficiency without compromising the heat balance. This vertical placement allows close proximity in terms of space utilization while maintaining thermal separation through the intervening battery charger and cooler system.
Solution Approach 2:
The cooler serves as a thermal intermediary that actively manages heat flow between the exhaust pipe and the battery charger, and by extension, the junction box. This forced cooling system maintains appropriate temperature levels for electrical components while enabling compact spatial arrangement.
3Area of stationary object
If the battery charger is placed above the exhaust pipe to optimize space, then the spatial utilization is improved, but the heat transmission from exhaust pipe to battery charger increases
Solution Approach 1:
The battery charger is positioned vertically above the exhaust pipe, utilizing the vertical space under the floor panel to optimize spatial utilization. This vertical arrangement allows efficient use of available volume while the cooler system manages the thermal interaction between the exhaust pipe and battery charger.
Solution Approach 2:
The cooler is positioned between the exhaust pipe and the battery charger, acting as a thermal intermediary. It provides forced cooling to the battery charger, actively managing heat transmission and protecting the electrical component from excessive thermal exposure while allowing close spatial proximity.
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 heat transmission to the electrical parts, promoting efficient spatial arrangement and heat balance under the floor panel, enhancing the overall performance and reliability of the electrical components.
Implementation Method 1
a cooler is provided to the battery charger, the cooler having a forced cooling function
Data Source
AI summary
A battery charger is disposed above an exhaust pipe, and a junction box is disposed above the charger. The charger includes a cooler having a forced cooling function.