External Vehicle Battery Pack Mounting With Collision Shock Absorption
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Solution Overview
Problem
Existing vehicle battery pack designs face challenges in achieving large battery capacity while minimizing shock absorption during collisions, as mounting inside a ladder frame limits space and external mounting exposes the battery to collision shocks.
Innovation Solution
A vehicle battery pack unit is designed with a bracket attached to the ladder frame, supporting a power storage module between the ladder frame and side guard, and incorporating a shock absorbing member attached to the housing, which is connected to the side guard to absorb and dissipate collision shocks, thereby securing a large battery capacity and enhancing safety.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Quantity of substance
If the battery pack is mounted inside the ladder frame, then the vehicle structure is compact, but the battery capacity cannot be made large due to limited space
Solution Approach 1:
The patent transitions from mounting the battery pack inside the ladder frame (internal space utilization) to mounting it outside the ladder frame between the side guard and rear guard (external space utilization). This dimensional change in mounting location enables significantly larger battery capacity while maintaining vehicle structural compactness through efficient use of previously unused external spaces.
2Quantity of substance
If the battery pack is disposed outside the ladder frame to attain large battery capacity, then the battery capacity increases, but a shock in the event of collision may be applied to the power storage module
Solution Approach 1:
The patent incorporates a shock absorbing member positioned between the power storage module and the rear guard, and another shock absorbing member between the power storage module and the side guard. These cushioning elements are pre-installed to absorb collision shocks before they reach the power storage module, thereby protecting the battery while maintaining external mounting configuration for large capacity.
Solution Approach 2:
The shock absorbing members serve as intermediary elements between the power storage module and the vehicle body structure (side guard and rear guard). These intermediaries absorb and dissipate collision energy, preventing direct transmission of harmful shocks to the battery module while enabling external mounting for increased capacity.
3Quantity of substance
If the battery pack is mounted outside the ladder frame, then large battery capacity is achieved, but the complexity of the mounting structure increases with brackets and shock absorbing members
Solution Approach 1:
The bracket structure serves multiple functions simultaneously: it mounts the power storage module to the vehicle body, provides structural support, and works in conjunction with shock absorbing members to protect the battery. This multi-functionality reduces the need for separate dedicated components, thereby managing complexity while enabling external mounting for large capacity.
Solution Approach 2:
The patent combines the mounting bracket structure with the shock absorption system into an integrated assembly. The bracket not only holds the power storage module but also provides mounting points for shock absorbing members, merging structural support and protection functions into a unified structure that manages complexity while achieving large battery capacity.
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 solution allows for a larger battery capacity by mounting the pack outside the ladder frame and effectively suppresses collision shocks, improving the safety and durability of the battery cells by distributing and absorbing impact energy.
Implementation Method 1
The shock absorbing member is attached to a side surface of the housing. The side guard is disposed at a lower portion of a side surface of the vehicle and fixed to the ladder frame and the shock absorbing member is connected to the side guard.
Implementation Method 2
effectively suppresses collision shocks, improving the safety and durability of the battery cells by distributing and absorbing impact energy
Data Source
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AI summary
A battery pack (800) includes a bracket (4) and a shock absorbing member (900). The battery pack (800) includes a housing (500) and a power storage module (10) accommodated in the housing (500). The bracket (4) is attached to a ladder frame (2). The bracket (4) supports the power storage module (10) between the ladder frame (2) and a side guard (3). The shock absorbing member (900) is disposed beside the power storage module (10).