Battery Module Terminal Layout for Compact Series Connection
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Solution Overview
Problem
The existing configuration of battery blocks in electricity storage units results in an enlarged size due to the separation caused by the connection parts of adjacent battery blocks, making the units less compact when connected in series or parallel.
Innovation Solution
The design includes a terminal attachment part with a first output terminal protruding outward and a second output terminal capable of connecting internally, allowing for a more compact arrangement of electricity storage modules by reducing the gap between adjacent modules.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Reliability
If two battery blocks are arranged with connection parts protruding outward for electrical connection, then electrical connectivity between blocks is achieved, but the size of the battery unit is enlarged due to separation between blocks
Solution Approach 1:
The connection part is nested within the battery block structure. Specifically, the connection part is housed in a connection part housing that is integrated into the battery block, with only a terminal portion protruding. This nesting approach allows electrical connection while minimizing the space required for connection parts, thereby reducing the overall battery unit size without compromising connectivity.
Solution Approach 2:
The connection part housing is merged with the battery block structure, forming an integrated assembly. The housing is positioned between the battery cells and the battery holder, combining multiple functions (electrical connection, structural support, and space optimization) into a single integrated component, which reduces the overall volume of the battery unit.
2Ease of operation
If connection parts are designed to protrude outward for easy connection, then ease of operation is improved, but device complexity increases due to additional components
Solution Approach 1:
The connection part housing serves multiple functions: it houses the connection part, provides structural support between battery cells and the holder, and facilitates electrical connection. By making the housing multi-functional, the number of separate components is reduced, thereby decreasing device complexity while maintaining ease of connection through the protruding terminal.
Data Source
AI summary
This electricity storage module includes: a plurality of electricity storage device; a device holder; a first external output terminal and a second external output terminal which are configured to be electrically connected to the plurality of electricity storage devices; and a terminal holder having one end portion and another end portion, the one end portion being configured to have the first external output terminal attached thereto, the other end portion being configured to have the second external output terminal attached thereto. The first external output terminal includes a coupling terminal part protruding to an outer side of a terminal holder in a direction in which the first external output terminal and the second external output terminal are arranged. The second external output terminal includes an external connection terminal part capable of being connected to an external terminal or the coupling terminal part on an inner side of the terminal holder.