Assembled Battery Cover Placement Jig for Positional Accuracy
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Solution Overview
Problem
Existing manufacturing methods for assembled batteries face challenges in accurately placing and fixing a plate-shaped cover on the storage body without the need for large-scale facilities, requiring high positional accuracy and efficient sealing.
Innovation Solution
A manufacturing method utilizing a placement jig with positioning pins and bolts to attach the cover to the storage body, ensuring precise positioning and secure fastening using a combination of magnetic forces and threaded fasteners, allowing for easy placement and airtight sealing.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Manufacturing precision
If the cover is placed manually or with simple fixtures, then the manufacturing process is simple, but the positional accuracy of the cover on the storage body is insufficient
Solution Approach 1:
A placement jig is introduced as an intermediary device between the cover and the storage body. The jig includes positioning pins that fit into positioning holes on the storage body and bolt insertion portions that align with fastening holes, enabling accurate placement without complex equipment. The jig acts as a temporary mediator that is removed after placement.
Solution Approach 2:
The cover itself includes the bolt insertion portions (through-holes or notch portions) that serve as self-positioning features. When the placement jig's positioning pins are inserted into the positioning holes and the cover is placed, the bolt insertion portions automatically align with the fastening holes, enabling self-alignment and high positional accuracy without additional complex positioning mechanisms.
2Reliability
If airtight sealing is required between the cover and storage body, then the cover must be placed with high positional accuracy, but this increases the difficulty of placement
Solution Approach 1:
The positioning holes and bolt insertion portions are pre-formed on the storage body and cover respectively, before assembly. The placement jig is pre-configured with positioning pins at specific positions. When assembly occurs, these pre-formed features automatically guide the cover to the correct position, ensuring airtight sealing without requiring complex real-time adjustment mechanisms during placement.
3Manufacturing precision
If large-scale facilities are used to place the cover with high accuracy, then positional accuracy is improved, but the manufacturing cost and facility requirements increase
Solution Approach 1:
The placement jig serves as a simple intermediary device that can be manufactured at low cost using conventional machining. It includes positioning pins with specific dimensions that fit into positioning holes, and bolt insertion portions that align with fastening holes. This simple mediator enables high positional accuracy without requiring expensive large-scale facilities like robotic arms or precision positioning systems.
Solution Approach 2:
The cover and storage body include self-aligning features (bolt insertion portions and fastening holes) that automatically guide the placement process. When the placement jig positions the cover, the self-aligning features ensure accurate alignment with fastening holes, eliminating the need for complex external positioning equipment and reducing manufacturing costs.
Data Source
AI summary
In attaching a cover, the cover is attached to a placement jig such that positioning pins of the placement jig are respectively passed through a first bolt insertion portion and a second bolt insertion portion of the cover. In placing the cover, the cover is placed at a placement position on a first surface of a storage body such that the positioning pins of the placement jig to which the cover is attached are respectively inserted into a first fastening hole and a second fastening hole of the storage body.