Battery Module Partition Wall Structure for Chain Ignition Prevention
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Solution Overview
Problem
Existing battery modules face challenges in preventing heat transfer between adjacent cells, securing cell fixation, reducing weight, and minimizing manufacturing time and defects.
Innovation Solution
A method involving a module case with thermoplastic and thermosetting resin partitions and an adhesive member to fix battery cells, using modified polyphenylene ether and polycarbonate for strength, and thermosetting resins like silicon or epoxy for heat resistance, with glass bubbles for weight reduction.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Object-affected harmful factors
If filler is used to wrap battery cells and fill spaces, then heat transfer between cells is inhibited, but manufacturing complexity increases and cell fixation becomes difficult
Solution Approach 1:
The invention extracts the heat insulation function from the filler material and integrates it into the partition wall structure. The partition wall is formed as an integral part of the module case with heat insulation layers, eliminating the need for separate filler materials and simplifying the manufacturing process while maintaining heat isolation between cells.
Solution Approach 2:
The invention merges multiple functions into the partition wall: structural support, cell positioning, and heat insulation. The partition wall combines the case structure with integrated heat insulation layers, consolidating what were previously separate components (case + filler) into a single multifunctional element.
2Object-affected harmful factors
If battery cells are disposed spaced apart using filler, then heat transfer is inhibited, but cell fixation is insufficient and cells may move under impact
Solution Approach 1:
The partition wall uses composite material construction with an inner case material layer and an outer heat insulation layer. This composite structure provides both mechanical strength for cell fixation and thermal insulation properties, simultaneously addressing both requirements through material composition rather than separate components.
3Object-affected harmful factors
If conventional filler is used to fill spaces between cells, then heat transfer is reduced, but manufacturing time increases and defect rate increases
Solution Approach 1:
The heat insulation layers are pre-integrated into the partition wall structure during case manufacturing, rather than being added as a separate step after cell installation. This preliminary integration of the insulation function into the base structure eliminates subsequent filling operations and reduces manufacturing steps.
Solution Approach 2:
The partition wall is segmented into distinct functional layers: an inner layer for structural support and an outer layer for heat insulation. This segmentation allows each layer to be optimized for its specific function while being manufactured as an integrated component, improving both performance and manufacturing efficiency.
Applied Scientific Principles
This section explains which scientific principles are used to turn an abstract innovation direction into a practical engineering solution.
Function Achieved in This Case
Enhances cell fixation, reduces heat transfer, minimizes weight, and lowers manufacturing costs while ensuring high energy density and impact resistance.
Implementation Method 1
the upper partition walls (113(b)) are made of a thermosetting resin... a step of performing heating to a predetermined temperature to fix the battery cell (130)
Implementation Method 2
each of the lower plate (111), the side plates (112), and the lower partition walls (113(a)) of the module case (110) is made of a thermoplastic resin, and the upper partition walls (113(b)) are made of a thermosetting resin... it is possible to inhibit movement of heat generated in any one of a plurality of battery cells
Implementation Method 3
an adhesive member (120) interposed between the partition wall (113) and the battery cell (130)
Data Source
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AI summary
The present invention relates to a method of manufacturing a battery module capable of preventing chain ignition, and more particularly to a method of manufacturing a battery module capable of preventing chain ignition, the method including a first step of preparing a module case (110) having a plurality of receiving portions (114) formed therein, each of the receiving portions having a space of a predetermined size; a second step of receiving a battery cell (130) in each of the receiving portions (114); and a third step of performing heating to a predetermined temperature to fix the battery cell (130), wherein the module case (110) includes a lower plate (111), a plurality of side plates (112), and a plurality of partition walls (113) configured to form the receiving portions (114), and each of the partition walls (113) includes a lower partition wall (113(a)) extending from the lower plate (111) by a predetermined height and an upper partition wall (113(b)) extending from the lower partition wall (113(a)) by a predetermined height.