Battery Module Frame Matte Exposure Holes for Wire Bonding Vision
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Solution Overview
Problem
The reflection of light from the inner surface of exposure holes in secondary battery modules causes unclear boundaries in images captured by vision devices, leading to errors in wire bonding positions during the manufacturing process.
Innovation Solution
A secondary battery module frame with matte portions along the perimeter of exposure holes that diffusely reflect light, featuring uneven surfaces with an average surface roughness of 0.35 µm to 3.00 µm, to clarify the hole boundaries in images.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Measurement precision
If the inner surface of exposure holes is smooth, then manufacturing is easier, but light reflection causes unclear boundaries in images captured by vision devices
Solution Approach 1:
The patent applies a matte portion with uneven surface only to the inner surface of the exposure hole, while the rest of the frame body maintains its original smooth surface. This localized treatment improves image quality at the critical exposure hole area without complicating the overall manufacturing process.
Solution Approach 2:
The patent changes the surface roughness parameter of the exposure hole inner surface by forming a matte portion with an average surface roughness (Ra) of 0.1 µm to 3.0 µm. This parameter change transforms the optical properties of the surface to reduce specular reflection and improve boundary clarity in images.
2Manufacturing precision
If the inner surface of exposure holes is smooth, then manufacturing is easier, but wire bonding position accuracy deteriorates due to unclear boundaries
Solution Approach 1:
The matte portion is applied locally to the inner surface of the exposure hole where wire bonding occurs, providing enhanced boundary clarity precisely where needed for accurate wire bonding position identification by vision devices.
Solution Approach 2:
By controlling the surface roughness (Ra) of the matte portion within 0.1 µm to 3.0 µm, the patent optimizes light scattering properties to clearly define the exposure hole boundary, enabling precise wire bonding position identification without excessive manufacturing complexity.
3Measurement precision
If a matte portion with uneven surface is formed in the exposure hole, then image quality improves, but device complexity increases
Solution Approach 1:
The matte portion is confined to the inner surface of the exposure hole, leaving the rest of the frame structure simple and unchanged. This localized approach improves image quality without significantly increasing overall device complexity.
Solution Approach 2:
The patent controls the surface roughness parameter (Ra) of the matte portion within a specific range (0.1 µm to 3.0 µm) to achieve optimal light scattering for image quality while maintaining a relatively simple surface treatment process that does not overly complicate device manufacturing.
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
Improves image quality and accuracy of wire bonding by clearly delineating exposure hole boundaries, enhancing the precision of wire bonding to electrode terminals.
Implementation Method 1
a matte portion formed along the perimeter of the inner surface of the exposure hole and diffusely reflecting light incident on the inner surface of the exposure hole
Data Source
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AI summary
The present disclosure relates to a secondary battery module frame, and provides the secondary battery module frame that includes a body having a receiving space formed therein; and a plurality of exposure holes penetrating one surface of the body and provided to expose the receiving space, wherein in the exposure hole, a matte portion formed along the perimeter of the inner surface of the exposure hole and diffusely reflecting light incident on the inner surface of the exposure hole is formed.