Vehicular Power Control Device Protector Mounting
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Solution Overview
Problem
Existing vehicular instrument mounting structures, such as those disclosed in Patent Documents, face challenges in preventing interference and damage to power control devices during collisions, particularly due to the positional relationship between auxiliary batteries and power control devices, which can lead to broken circuits and inadequate insulation from high voltage components.
Innovation Solution
A vehicular instrument mounting structure that includes a protector fastened to both the power control device and the transaxle using screw members, providing protection by dispersing impact loads and preventing movement of the power control device, while allowing for easy mounting and removal, and using a material like heat rolled steel for the protector to absorb and deform impact loads effectively.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Volume of moving object
If the auxiliary battery is mounted in the vicinity of the power control device to save space, then the space utilization is improved, but the risk of interference and damage during collision increases
Solution Approach 1:
A protector made of heat rolled steel is introduced as an intermediary component between the auxiliary battery and the power control device. The protector is fastened to both the power control device case and the transaxle, creating a protective barrier that absorbs and disperses impact loads during collision, preventing direct contact and damage to the power control device while allowing close mounting of the auxiliary battery.
2Productivity
If the power control device is mounted closer to the front to improve layout efficiency, then the layout efficiency is improved, but the vulnerability to impact from the auxiliary battery increases
Solution Approach 1:
The protector is pre-installed and fastened to the power control device case and transaxle before collision occurs. This preliminary protective measure ensures that when the auxiliary battery moves forward during impact, the protector is already in position to absorb and disperse the load, preventing damage to the power control device circuits and maintaining reliability.
3Stability of the object's composition
If a rigid mounting structure is used to secure the power control device, then the mounting stability is improved, but the ability to absorb impact load decreases
Solution Approach 1:
The protector is made of heat rolled steel, changing the material parameter from typical rigid mounting materials to a material that combines strength with ductility. This allows the protector to maintain mounting stability through secure fastening while simultaneously absorbing impact loads through controlled deformation, resolving the contradiction between rigidity and impact absorption.
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 proposed structure effectively prevents damage to the power control device by dispersing impact loads and ensuring rapid discharge and insulation, reducing the risk of circuit breakage and maintaining the integrity of the high voltage components during collisions.
Implementation Method 1
using a material like heat rolled steel for the protector to absorb and deform impact loads effectively
Data Source
Figure 1
Figure 2
Figure 3(A)~3(C)
AI summary
The present invention relates to a vehicular instrument mounting structure in which an auxiliary battery (25) is mounted so as to be as high as a power control device (19), for protecting the power control device 10 by a protector (20) even when the auxiliary battery (25) interferes with the power control device (10). The power control device (10) is fastened to the upper surface of a transaxle (16) by a screw (13) via a mounting foot provided in the front-rear direction of the vehicle. The protector (20) for protecting a corner of the power control device (10) is fastened to the power control device (10) and the transaxle (16) by screws (14) for a power control device fastening part (21) and a transaxle fastening part (22). The power control device (10) has a power cable (11) for supplying power and a discharger (12) for rapid discharge at a time of emergency.