Battery Stack Insulation Locking Structure for Vibration Stability
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Solution Overview
Problem
In existing energy storage apparatuses, the insulating material between the battery cell stack and the elongating member can move relative to the elongating member due to vibrations, potentially leading to insufficient insulation and increased risk of short-circuiting.
Innovation Solution
The energy storage apparatus includes an elongating member with a first piece and an insulating member with a second piece, where the first piece and second piece engage with each other to restrain the movement of the second piece relative to the first piece, ensuring stable insulation between the battery cell stack and the elongating member.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Ease of manufacture
If insulating material is simply overlapped with the bent piece, then the structure is simple and easy to manufacture, but the insulating material can move relative to the bent piece due to vibration, compromising insulation reliability
Solution Approach 1:
The insulating member is divided into a second main-body portion and a second piece, where the second piece is specifically designed to engage with the first bent piece of the bind bar. This segmentation allows the insulating member to provide both ease of manufacture (through modular construction) and reliable positioning (through the engagement mechanism that prevents relative movement during vibration)
Solution Approach 2:
The second piece of the insulating member is inserted into or engaged with the first bent piece of the bind bar, creating a nested or interlocking structure. This engagement relationship ensures that the insulating material remains firmly positioned relative to the bind bar while maintaining a compact overall structure that is easy to manufacture
2Ease of operation
If insulating material is simply overlapped with the bent piece, then the assembly process is simple, but vibration causes relative movement between the insulating material and bent piece
Solution Approach 1:
The insulating member is segmented into a second main-body portion and a second piece, with the second piece specifically designed to engage with the bind bar's first bent piece. This segmentation enables simple assembly through the engagement mechanism while simultaneously ensuring stable positioning that prevents relative movement during vibration
Solution Approach 2:
The second piece of the insulating member acts as an intermediary element that connects to the first bent piece of the bind bar. This intermediary engagement structure provides both ease of assembly (through a clear engagement interface) and stable positioning (by preventing relative movement between the insulating material and the bind bar)
Data Source
AI summary
An energy storage apparatus includes: energy storage devices; an elongating member adjacent to the energy storage devices in a first direction; and an insulating member disposed between the energy storage devices and the elongating member. The elongating member includes a first main-body portion and a first piece, the first main-body portion extends in a second direction and a third direction, the first piece elongates from an end of the first main-body portion toward the first direction and elongates in the third direction, the first main-body portion and the first piece are disposed along the energy storage devices, the insulating member includes a second main-body portion and a second piece, the second main-body portion extends along the first main-body portion, the second piece is coupled to an end of the second main-body portion and extends along the first piece, and the first piece and the second piece engage with each other.