Battery Module Bus Bar Cut Position 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, requiring 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 cutting of the bus bar without damaging the secondary batteries, ensuring accurate disassembly of the battery module.

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 the secondary batteries. This preliminary positioning information guides the cutting process, ensuring accurate cuts without requiring complex real-time positioning systems during disassembly.

Inventive Principle:

Principle #10Preliminary action

2Manufacturing precision

If the cut position is determined without marked information, then the marking process is eliminated, but the cutting accuracy decreases and battery damage risk increases

Engineering Contradiction:

Improvecutting accuracy of bus barVSAvoidease of battery module disassembly

Core Design Contradiction:

Manufacturing precisionVSEase of manufacture

Solution Approach 1:

The cut position is marked on the bus bar during the assembly process or before disassembly. This preliminary marking provides clear visual guidance for the cutting operation, ensuring high cutting accuracy while maintaining ease of manufacture. The mark serves as a simple, effective indicator that requires no complex measurement or positioning equipment during disassembly.

Inventive Principle:

Principle #10Preliminary action

3Ease of operation

If no cut position information is provided, then the battery module structure is simpler, but the disassembly safety is compromised

Engineering Contradiction:

Improvesafety of disassembly operationVSAvoidcomplexity of battery module structure

Core Design Contradiction:

Ease of operationVSDevice complexity

Solution Approach 1:

The bus bar is pre-marked with cut position information before disassembly begins. This preliminary action ensures that operators can safely identify the correct cut location without complex safety systems or procedures. The mark provides clear guidance that enhances operational safety while adding minimal structural complexity to the battery module.

Inventive Principle:

Principle #10Preliminary action

Data Source

PatentEP4372878A1Battery module and method for disassembling the same

Publication Date: 2024.05.22 PRIME PLANET ENERGY & SOLUTIONS INC

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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.