Battery Pack Bolting Guide Jig for Precise Fastening Alignment
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Solution Overview
Problem
The existing bolting processes for battery packs are inefficient due to difficulties in accurately positioning bolts within the narrow internal spaces of battery packs, leading to increased manufacturing time and risk of internal damage during the bolting operation.
Innovation Solution
A bolting device featuring an electric screwdriver, a bit guide member with a hollow tube, and a guide jig with a fixing member that stabilizes the bit guide member, ensuring accurate positioning and preventing collisions with internal components, thereby enhancing the bolting process efficiency.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Reliability
If bolt fastening is used to fix the module case in the external housing, then the module case is securely fixed, but the narrow internal space makes it difficult to visually check the fastening position, increasing manufacturing time
Solution Approach 1:
A guide jig is introduced as an intermediary tool to assist the bolting operation. The guide jig includes positioning members that guide the bolt to the correct fastening position, making the fastening process reliable while eliminating the need for difficult visual inspection in the narrow space, thus reducing manufacturing time
Solution Approach 2:
The guide jig is prepared in advance with positioning members that pre-establish the correct bolt insertion path and fastening position. This preliminary preparation eliminates the need for time-consuming visual checks during the actual bolting operation, resolving the contradiction between reliability and manufacturing time
2Productivity
If the driver bit rotates during bolting operation, then the bolting function is performed, but the driver bit escapes from the fastening position due to vibration and collides with internal parts, increasing damage risk
Solution Approach 1:
The guide jig acts as a mediator that constrains the driver bit's movement path. The positioning members of the guide jig prevent the driver bit from escaping due to vibration, thereby protecting internal parts from collision while maintaining bolting operation efficiency
Solution Approach 2:
The guide jig provides protective constraint before vibration can cause the driver bit to escape. By pre-establishing the correct insertion path with positioning members, the system prevents harmful deviations and collisions before they occur, resolving the contradiction between productivity and damage risk
3Ease of operation
If manual bolting operation is performed in the narrow internal space, then flexibility is maintained, but accurate positioning of the bolt is difficult, increasing defective rates
Solution Approach 1:
The guide jig serves as a mediator that provides precise positioning guidance for the bolt. It maintains ease of operation by allowing manual bolting while ensuring manufacturing precision through its positioning members that guide the bolt to the exact fastening position, eliminating the difficulty of accurate positioning in narrow spaces
Data Source
AI summary
Discussed is a bolting device that effectively protects an internal configuration of a battery pack and increases manufacturing efficiency during a bolting operation. The bolting device for manufacturing a battery pack includes an electric screwdriver provided with a rotation motor; a driver bit connected to the rotation motor to enable a rotation movement and configured to rotate a bolt; a bit guide member provided with a hollow tube such that the driver bit is inserted into an inside of the hollow tube to be movable; and a guide jig provided with a main body configured to be mounted on an upper portion of a pack housing, the main body having a plate shape and having at least one through hole, and a fixing member inserted into the through hole and mounted therein, and having an insertion hole.