Battery Pack Plate Structure for Electrode Terminal Impact Protection
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Solution Overview
Problem
Conventional energy storage apparatuses face challenges in protecting the energy storage devices from external forces, such as impact and vibration, which can lead to structural failure and safety issues, particularly when the electrode terminals are susceptible to damage during collisions.
Innovation Solution
The energy storage apparatus includes a first plate-shaped member with a protruding portion that extends beyond the energy storage device, positioned to protect the electrode terminal and bus bar from external impacts, and optionally a second plate-shaped member, which collectively enhances protection by distributing external forces uniformly.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Volume of moving object
If the energy storage device is accommodated in the outer case with the electrode terminal directed laterally, then the compactness and arrangement flexibility are improved, but the susceptibility to impact damage on the electrode terminal increases
Solution Approach 1:
A plate-shaped member is introduced as an intermediary protective element between the external environment and the electrode terminal. This member includes a protruding portion that extends beyond the energy storage device in the lateral direction, creating a physical barrier that intercepts and distributes impact forces before they can reach the vulnerable electrode terminal and bus bar components.
Solution Approach 2:
The plate-shaped member with its protruding portion is positioned in advance to create a protective buffer zone around the electrode terminal area. This pre-positioned structure absorbs and dissipates impact energy before it can reach the critical electrical components, effectively cushioning them against potential damage during collisions or external forces.
2Reliability
If a protective structure is added around the electrode terminal, then the safety and impact resistance are improved, but the device complexity increases
Solution Approach 1:
The plate-shaped member serves multiple functions simultaneously: it acts as a protective barrier against impact, provides structural support to the outer case, and maintains the positional stability of the energy storage device. By combining these functions into a single component, the design avoids adding excessive complexity while achieving comprehensive protection.
Solution Approach 2:
The protruding portion of the plate-shaped member is strategically positioned only where the electrode terminal and bus bar are located, providing localized protection precisely where it is needed. This targeted approach avoids unnecessary structural additions in other areas, maintaining overall simplicity while ensuring critical components are protected.
Data Source
AI summary
An energy storage apparatus includes an energy storage device including an electrode terminal, an outer case accommodating the energy storage device, and a first plate-shaped member. The outer case includes a bottom wall portion which is a wall portion on an installation surface side where the energy storage apparatus is installed. The first plate-shaped member is disposed inside the outer case, and is disposed at an end portion of the energy storage device in a first direction which is an arrangement direction of the energy storage device and the bottom wall portion. The energy storage device is disposed in a posture where the electrode terminal is directed in a second direction which is a direction intersecting with the first direction and extending along the bottom wall portion. The first plate-shaped member includes a first protruding portion which protrudes more than the energy storage device in the second direction.