Battery Module Fixing Band with Interlocking Grooves and Protrusions
Find Innovative SolutionsGenerate Solutions
Solution Overview
Problem
Conventional fixing bands for battery modules have complex structures, poor connection strength, and are inconvenient to overlap, failing to effectively resist the expansion force of batteries in non-module structures.
Innovation Solution
A fixing band with a simple structure featuring engaging grooves and protrusions formed by stamping, allowing for easy assembly and high connection strength, which encloses the battery stack and end plates to resist expansion forces.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Ease of manufacture
If a conventional fixing band structure is used, then the battery module can be assembled, but the structure becomes complicated and connection strength decreases
Solution Approach 1:
The fixing band is divided into a body portion and an engaging portion, where the engaging portion includes multiple engaging protrusions that can be inserted into corresponding grooves on the end plate. This segmentation allows for simplified assembly while maintaining structural integrity and connection strength.
Solution Approach 2:
The fixing band integrates both the clamping function (body portion) and the connection function (engaging portion with protrusions and grooves) into a single component. This merging eliminates the need for separate fastening elements, reducing overall structure complexity while ensuring secure connection.
2Strength
If the fixing band has a complex joint structure, then it may provide connection, but the connection strength becomes poor and overlapping is inconvenient
Solution Approach 1:
The engaging protrusions are extracted as distinct features from the end plate, allowing them to be separately formed and precisely positioned. This extraction enables the protrusions to be stamped or formed directly onto the fixing band, simplifying the overlapping and assembly process while ensuring strong mechanical engagement.
Solution Approach 2:
The engaging protrusions and grooves are pre-formed during the stamping or manufacturing process of the fixing band and end plate, respectively. This preliminary action ensures that the connection features are already in place before assembly, making the overlapping process convenient and ensuring high connection strength without requiring complex joint structures.
3Adaptability or versatility
If side plates are removed to create a non-module structure, then design flexibility improves, but the ability to resist expansion force decreases
Solution Approach 1:
The fixing band acts as an intermediary component between the end plates and the battery stack. It provides the necessary mechanical strength to resist expansion forces while maintaining the design flexibility of the non-module structure. The engaging protrusions on the fixing band mediate the force transfer between the end plates and the battery cells.
Solution Approach 2:
The fixing band concentrates its force-resisting capability at specific locations where the engaging protrusions contact the end plates. This local quality approach allows the band to provide targeted support against expansion forces while maintaining overall design flexibility and adaptability to different battery configurations.
Data Source
AI summary
The disclosure relates to a fixing band for a battery module and a battery module. The fixing band comprises a first end portion, a connecting section and a second end portion which are arranged successively in an extending direction of the fixing band. The first end portion includes a body and engaging grooves which are protruded in a thickness direction of the body. The engaging grooves are integral with the body. The second end portion has engaging protrusions which are shaped to match the engaging grooves. The first end portion and the second end portion are laminated in the thickness direction and are engaged with each other by the engaging grooves and the engaging protrusions, so that the fixing band encloses an annular accommodation space.