Battery Module Bus Bar Cut Marking for Safe Disassembly

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Solution Overview

Problem

Secondary batteries in battery modules can be damaged during the cutting of bus bars, especially when they are in a charged state, necessitating a technique for accurate cutting without damage.

Innovation Solution

Providing information on the cut position of the bus bar, such as through QR codes or grooves, allows for precise determination and execution of the cut, ensuring the bus bar is cut accurately without harming the secondary batteries.

Engineering Contradictions & Design Principles

VSEngineering Contradiction Analysis

1Reliability

If the bus bar is cut without precise positioning information, then the disassembly process is simple, but the secondary batteries may be damaged

Engineering Contradiction:

Improveintegrity of secondary batteriesVSAvoidcomplexity of bus bar cutting process

Core Design Contradiction:

ReliabilityVSDevice complexity

Solution Approach 1:

The patent applies preliminary action by pre-marking the cut position on the bus bar before the cutting operation. The mark indicates the exact location where the bus bar should be cut to avoid damaging secondary batteries, allowing the cutting process to proceed safely without complex positioning systems during actual disassembly

Inventive Principle:

Principle #10Preliminary action

Solution Approach 2:

The patent uses a mark as an intermediary element between the cutting tool and the bus bar. This mark serves as a visual guide that mediates the positioning process, enabling accurate cutting without requiring complex measurement or positioning equipment during the actual cutting operation

Inventive Principle:

Principle #24Intermediary (Mediator)

2Manufacturing precision

If the cut position is determined without marked information, then the disassembly process is fast, but the cutting precision is insufficient

Engineering Contradiction:

Improveprecision of bus bar cut positionVSAvoidtime for determining cut position

Core Design Contradiction:

Manufacturing precisionVSLoss of time

Solution Approach 1:

The cut position mark is applied in advance during battery module assembly or preparation, eliminating the need for time-consuming measurement and calculation during disassembly. The pre-marked position provides immediate visual guidance for accurate cutting

Inventive Principle:

Principle #10Preliminary action

Solution Approach 2:

The bus bar itself provides the positioning information through the mark applied on it. The mark is part of the bus bar assembly, serving as a self-contained guide that eliminates the need for external measurement tools or complex positioning procedures during cutting

Inventive Principle:

Principle #25Self-service

Data Source

PatentUS20240170805A1Battery module and method for disassembling the same

Publication Date: 2024.05.23 PRIME PLANET ENERGY & SOLUTIONS INC

AI summary

Provided is a battery module enabling accurate cutting of a bus bar without damage to secondary batteries. A battery module disclosed here includes a plurality of secondary batteries, and a bus bar electrically connecting the secondary batteries. Each of the secondary batteries includes a battery case. The battery module is provided with information on a cut position of the bus bar in disassembling the battery module.