Battery Box Bottom Guard Plate Attachment Without Complex Shaping
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Solution Overview
Problem
Existing battery boxes face challenges with complex and heavy steel bottom guard plates that require intricate shaping and result in high production and maintenance costs, while flat composite bottom guard plates struggle to form reliable attachments with the box body.
Innovation Solution
A battery box design featuring a flat bottom guard plate connected via a connecting assembly, utilizing composite materials and innovative fastening mechanisms to securely attach the guard plate to the box body without suspension, reducing weight and production costs.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Strength
If a steel plate bottom guard plate is used to protect against impact and scraping, then protection performance is improved, but weight and production cost increase
Solution Approach 1:
The bottom guard plate is constructed as a composite structure comprising a steel plate layer and a composite material layer. The steel plate layer provides impact resistance and structural strength, while the composite material layer (such as plastic or polymer) reduces overall weight and offers corrosion protection. This composite approach resolves the contradiction by maintaining protection performance through the steel layer while reducing weight through the lighter composite material layer.
2Reliability
If the bottom guard plate is molded into a complex shape to match the battery box, then attachment reliability is improved, but manufacturing complexity and cost increase
Solution Approach 1:
The bottom guard plate is divided into multiple functional layers (steel plate layer and composite material layer) that can be manufactured separately and then assembled. This segmentation allows each layer to be produced using simpler, more cost-effective processes while maintaining the overall protective function. The complex shaping requirements are distributed across layers rather than requiring a single complex molded part.
Solution Approach 2:
The steel plate layer and composite material layer are combined to form an integrated bottom guard plate assembly. The steel plate provides structural integrity and impact resistance, while the composite layer provides corrosion protection and surface finishing. This merging of materials and functions achieves reliable attachment and protection without requiring either layer to be individually complex in shape.
3Strength
If the whole bottom guard plate is made of steel plate, then strength and protection are improved, but anti-corrosion performance and cost worsen
Solution Approach 1:
The composite structure combines a steel plate layer with a corrosion-resistant composite material layer. The steel plate layer maintains structural strength and impact resistance, while the outer composite material layer (plastic or polymer) provides excellent corrosion and chemical resistance. This layered composite approach resolves the contradiction by assigning different functional requirements to different material layers.
Data Source
AI summary
Disclosed in the present disclosure are a battery box and a battery pack. The battery box includes a box body; a bottom guard plate, in a form of a flat plate, the bottom guard plate being spaced apart from the box body and an overhanging portion is formed between the bottom guard plate and the box body; and a connecting assembly, provided in the overhanging portion. Both of the box body and the bottom guard plate are connected with the connecting assembly to allow the bottom guard plate to be attached to the box body.