Battery Module Ring Terminal Guides Prevent Rotation

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Solution Overview

Problem

The existing battery modules face issues with ring terminal damage during the connection process due to rotation, leading to increased defect rates and compromised safety.

Innovation Solution

Incorporating ring terminal guides on the busbar mounting member to prevent rotation of ring terminals, ensuring they are fixed in place and reducing the likelihood of damage during the connection process.

Engineering Contradictions & Design Principles

VSEngineering Contradiction Analysis

1Productivity

If ring terminals are not fixed during the connection process, then the connection process is simple and fast, but the ring terminals rotate and get cut or damaged

Engineering Contradiction:

Improveconnection process efficiencyVSAvoidring terminal integrity

Core Design Contradiction:

ProductivityVSReliability

Solution Approach 1:

The busbar mounting member is pre-equipped with ring terminal guides before the connection process begins. These guides are positioned to receive and constrain ring terminals as they are being installed, preventing rotation during the fastening operation. This preliminary preparation eliminates the need for additional fixing steps while ensuring terminal integrity.

Inventive Principle:

Principle #10Preliminary action

Solution Approach 2:

Ring terminal guides serve as an intermediary component between the busbar mounting member and the ring terminals. The guides provide a controlled interface that allows ring terminals to be installed without direct contact between the terminal and rotating bolts, thereby preventing damage while maintaining connection efficiency.

Inventive Principle:

Principle #24Intermediary (Mediator)

2Reliability

If ring terminal guides are added to the busbar mounting member, then ring terminal damage is prevented, but the device complexity increases

Engineering Contradiction:

Improvering terminal protectionVSAvoidbusbar mounting member structure

Core Design Contradiction:

ReliabilityVSDevice complexity

Solution Approach 1:

The ring terminal guides are integrated directly into the busbar mounting member structure, combining multiple functions into a single component. The guides are formed as integral parts of the mounting member, eliminating the need for separate guide components and reducing overall assembly complexity despite adding protective functionality.

Inventive Principle:

Principle #5Merging (Combining)

Solution Approach 2:

Rather than making the entire busbar mounting member complex, ring terminal guides are added only at specific locations where ring terminals need protection. The guides are localized features positioned precisely where ring terminals make contact during installation, providing protection only where needed without unnecessary structural complexity elsewhere.

Inventive Principle:

Principle #3Local quality

Data Source

PatentEP3016176B1Battery module comprising ring terminal guides

Publication Date: 2019.08.21 LG CHEM LTD

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AI summary

Disclosed herein is a battery module having a plurality of unit cells that can be charged and discharged, the battery module including busbars for electrically interconnecting the unit cells, ring terminals connected to electrical connection portions of the unit cells for measuring voltages of the unit cells, and a busbar mounting member mounted at an outer surface of the battery module corresponding to the electrical connection portions of the unit cells, the busbar mounting member including ring terminal guides for preventing rotation of the ring terminals.