Power Storage Module Sidewall Busbar Layout for Easier Cell Assembly
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Solution Overview
Problem
The existing power storage module designs face difficulties in assembly due to the lateral positioning of the connection member, making it challenging to connect the connection member with the external terminal.
Innovation Solution
The power storage module is configured with a connection member that is embedded in the peripheral side surface portion of the module case, allowing for easier alignment and connection with the external terminal of adjacent power storage cells, facilitating assembly by embedding at least a part of the connection member in the peripheral side surface portion.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Device complexity
If the connection member is positioned laterally of the power storage cell, then the structure is simplified, but the alignment and connection with the external terminal becomes difficult
Solution Approach 1:
The connection member is embedded in the peripheral side surface portion of the module case, transitioning from a lateral positioning to a vertically integrated positioning. This dimensional change allows the connection member to align properly with the external terminal while maintaining structural simplicity, as the embedding provides automatic alignment guidance during assembly.
2Ease of manufacture
If the connection member is positioned laterally, then manufacturing is simpler, but assembly becomes more difficult
Solution Approach 1:
The connection member is pre-positioned and embedded in the peripheral side surface portion of the module case before the power storage cells are installed. This preliminary action ensures that the connection member is already in the correct position and orientation, making the subsequent assembly process with the external terminal straightforward and reducing assembly difficulty.
3Ease of operation
If the connection member is embedded in the peripheral side surface portion, then alignment with the external terminal is facilitated, but the device complexity increases
Solution Approach 1:
The connection member is merged with the peripheral side surface portion of the module case by embedding it within the case structure. This merging integrates the connection function into the case itself, providing alignment guidance without requiring separate alignment components, thus maintaining device simplicity while facilitating alignment.
Data Source
AI summary
A power storage module includes a plurality of power storage cells, a module case, and a connection member. The plurality of power storage cells each include an electrode assembly, a cell case, and an external terminal. The external terminal is electrically connected to the electrode assembly, located outside the cell case, and disposed at a side of the cell case in a second direction orthogonal to a first direction. The module case includes a bottom surface portion and a peripheral side surface portion. The connection member is in contact with the external terminal of each of power storage cells adjacent to each other, among the plurality of power storage cells. At least a part of the connection member is embedded in the peripheral side surface portion.