Battery Module Frame Groove for Safe Cell Block Insertion
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Solution Overview
Problem
The insertion of a cell block assembly into a frame can cause the brazing-welded parts, such as the cooling plate, to be ruptured, leading to defects in the battery module during assembly.
Innovation Solution
A battery module design featuring a frame with a recessed groove in the sidewall to facilitate easy insertion of the cell block assembly, preventing damage to the cooling plate and ensuring a defect-free assembly process.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Ease of operation
If the sidewall of the frame is spread to both sides to insert the cell block assembly, then the cell block assembly can be inserted into the frame, but the brazing-welded part of the cooling plate is ruptured
Solution Approach 1:
A groove is formed in the sidewall of the frame before the cell block assembly is inserted. This preliminary structural modification allows the sidewall to be spread for insertion while the groove prevents excessive deformation from reaching the brazing-welded cooling plate, thus preventing rupture before it can occur
Solution Approach 2:
The groove is specifically positioned in the sidewall at a location that provides local structural flexibility where needed for insertion, while protecting the critical brazing-welded cooling plate area from deformation. This localized structural modification addresses the contradiction by creating different mechanical properties in different regions of the frame
2Ease of manufacture
If the sidewall is spread to facilitate insertion, then assembly is easier, but the bottom part of the frame becomes convexly bent upward causing defects
Solution Approach 1:
The groove is pre-formed in the sidewall before assembly operations. This preliminary action creates a controlled deformation path that allows the sidewall to spread during insertion without causing uncontrolled convex bending of the bottom part, maintaining manufacturing precision while enabling easy assembly
Solution Approach 2:
The groove acts as an intermediary structural feature that mediates between the need for sidewall spreading (for easy assembly) and the need to maintain bottom part shape accuracy. It provides a controlled mechanism for deformation that prevents harmful convex bending
Data Source
AI summary
The present invention relates to a battery module, and more particularly, to a battery module, in which a cell block assembly is easily inserted into a frame, and a component welding part, etc., such as a cooling plate is prevented from being ruptured during insertion and assembly of the cell block assembly to prevent the battery module from being defective, thereby implementing remarkably excellent concept products.A battery module of the present invention includes a cell block assembly that is an assembly of a plurality of cells, a frame configured to surround bottom ad side surfaces of the cell block assembly, a top plate disposed on a top surface of the cell block assembly, an end plate disposed on front and rear surfaces of the cell block assembly, and a cooling plate coupled to a bottom surface of the frame at a lower side of the frame, wherein the frame include a bottom part configured to surround a bottom surface of the cell block assembly and a sidewall configured to surround a side surface of the cell block assembly, and a groove having a recessed shape is defined in the sidewall.