Vehicle Battery Pack Side Member With Downward Crash Guide
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Solution Overview
Problem
In vehicles with movable side steps, the actuation links can collide with the battery pack during a crash, causing potential damage to the internal battery modules, which compromises the safety and integrity of the battery pack.
Innovation Solution
A battery pack device is designed with a downward guide integrated into the battery side member to direct the movable side step downwards during a collision, and a module anti-crushing member is placed above the battery module to prevent vertical crushing, ensuring the battery pack's safety by redirecting the actuation link's impact and providing structural support.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Ease of operation
If a movable side step with actuation link is provided to assist passenger entry and exit, then ease of operation is improved, but the battery pack may be damaged during collision
Solution Approach 1:
The downward guide acts as an intermediary component between the actuation link and the battery pack. It redirects the actuation link's movement path during collision, guiding it downward along a predetermined trajectory away from the battery pack, thereby preventing direct impact while maintaining the side step's normal functionality
Solution Approach 2:
The downward guide is pre-configured with a specific geometric structure that anticipates collision scenarios. By designing the guide's shape beforehand, the system prepares a predetermined safe movement path for the actuation link, enabling it to automatically redirect away from the battery pack when collision occurs without requiring real-time control decisions
2Reliability
If the downward guide is added to redirect the actuation link, then battery pack safety is improved, but device complexity increases
Solution Approach 1:
The downward guide is integrated with the battery side member, merging two functional elements into a single unified structure. This combination reduces the number of separate components and simplifies the overall assembly process while maintaining the collision protection function
Solution Approach 2:
The downward guide is specifically positioned and shaped to address only the critical collision protection function. By concentrating the protective function in a localized geometric feature rather than a comprehensive structural overhaul, the design adds minimal complexity while achieving the safety objective
Data Source
AI summary
A battery pack device for a vehicle having a movable side step includes: a lower casing including a battery side member configured to be coupled to a lateral lower side of a vehicle body of the vehicle, and a downward guide provided in the battery side member and defining a slope to guide the movable side step of the vehicle to move downwards in the event of a collision of the vehicle.