Battery Tray Assembly With Plastic Fixing Rings for Strength and Insulation
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Solution Overview
Problem
Existing battery module tray structures face issues with mechanical strength and insulation performance, leading to deformation and potential short circuits due to the use of plastic brackets and high costs associated with metal brackets.
Innovation Solution
A battery tray assembly featuring a plastic bracket with interconnected fixing rings and a tray with through holes, utilizing structural adhesive for fixation, and incorporating limiting protrusions and annular adhesive storage grooves for precise cell positioning and enhanced insulation, combining high mechanical strength with good insulation performance.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Ease of manufacture
If a plastic bracket is used as the tray structure, then the fabrication cost is reduced, but the mechanical strength is poor and deformation occurs during use
Solution Approach 1:
The patent employs a composite structure consisting of a plastic bracket integrated with metal reinforcing ribs. The plastic component provides cost-effective manufacturing and insulation, while the embedded metal ribs supply the necessary mechanical strength and structural stability, resolving the contradiction between low cost and high strength requirements.
2Strength
If a metal bracket is used as the tray structure, then the mechanical strength is improved, but the insulation performance deteriorates and additional insulation measures are required
Solution Approach 1:
The composite design integrates metal reinforcing ribs within a plastic bracket housing. The plastic material serves as an insulating barrier that prevents thermal and electrical conduction, while the metal ribs provide structural support. This combination eliminates the need for separate insulation films or spray layers required with pure metal brackets.
3Ease of manufacture
If a plastic bracket is used, then the fabrication cost is reduced, but the assembly precision of cells deteriorates
Solution Approach 1:
The plastic bracket is pre-formed with integrated positioning structures including recesses and protrusions that precisely locate the cells before assembly. These positioning features are molded into the bracket structure itself, ensuring accurate cell placement without requiring additional adjustment or alignment steps during assembly, thereby maintaining high assembly precision despite using cost-effective plastic material.
Data Source
AI summary
Disclosed are a battery tray assembly and a battery module. The battery tray assembly includes a plastic bracket and a tray, wherein the plastic bracket includes a frame and a plurality of fixing rings which are connected with each other; the fixing rings are provided with limiting protrusions, and the limiting protrusions fit the outer side wall of cells. The cells can be positioned by the limiting protrusions and the fixing rings, so that the assembly accuracy is high; the plastic bracket is installed in the tray, and the tray is provided with through avoidance holes corresponding to the fixing rings.