Battery Module Terminal Base Structure for Stable HV-LV Fixing
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Solution Overview
Problem
The existing installation method for battery modules experiences unreliable fixing between the high-voltage output terminal and the FPC low-voltage connector, leading to potential electrical safety issues and instability.
Innovation Solution
A battery module design featuring an output terminal base with integrated high-voltage and low-voltage terminal installation portions, a limiting portion, and a reinforcing plate, which are securely fixed to the end plate using a combination of grooves, holes, and elastic members, ensuring a stable connection and integration with the cells contact system assembly.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Reliability
If the output terminal base is fixed to the end plate using conventional bolt installation method, then the structure is simple and easy to manufacture, but the fixing reliability between high-voltage output terminal and FPC low-voltage connector is poor
Solution Approach 1:
The patent combines the high-voltage output terminal installation portion and low-voltage output terminal installation portion into a single integrated output terminal base. This merging of functions into one component improves fixing reliability by ensuring both terminals are secured together as a unified assembly, eliminating the reliability issues of separate installations while managing structural complexity through integration.
Solution Approach 2:
The output terminal base is segmented into distinct functional portions: a high-voltage output terminal installation portion and a low-voltage output terminal installation portion. This segmentation allows each terminal type to be independently designed and installed in dedicated grooves on the end plate, improving fixing reliability by preventing interference between high-voltage and low-voltage connections while maintaining manageable structural complexity through functional separation.
2Adaptability or versatility
If the output terminal base integrates both high-voltage and low-voltage terminal installation portions, then the integration and compatibility with cells contact system assembly are improved, but the device structure becomes more complex
Solution Approach 1:
The output terminal base serves multiple functions within a single component: it provides installation portions for both high-voltage output terminals and low-voltage FPC connectors, and includes a limiting portion for positional constraint. This multi-functionality improves integration compatibility with the cells contact system assembly by consolidating all terminal-related functions into one base structure, while the design manages structural complexity through functional integration rather than separate components.
Solution Approach 2:
The patent merges the high-voltage terminal mounting function and low-voltage terminal mounting function into a single output terminal base structure. This consolidation improves adaptability and versatility by ensuring both terminal systems are integrated into one standardized interface, facilitating compatibility with the cells contact system assembly while managing structural complexity through unified design.
3Stability of the object's composition
If the limiting portion is installed in the limiting groove to connect the output terminal base to the end plate, then the fixing stability is improved, but the manufacturing precision requirements increase
Solution Approach 1:
The connection structure is segmented into a limiting portion on the output terminal base and a corresponding limiting groove on the end plate. This segmentation provides dedicated positional constraint features that improve fixing stability by preventing displacement of the output terminal base. The design manages manufacturing precision requirements by creating simple, geometrically-defined limiting features (protrusions and grooves) that are easier to manufacture precisely compared to complex interlocking structures.
Solution Approach 2:
The limiting portion and limiting groove act as intermediary connection features between the output terminal base and the end plate. These intermediary elements improve fixing stability by providing a dedicated mechanical constraint interface, while their simple geometric forms (protrusion fitting into groove) reduce manufacturing precision requirements compared to direct complex joint designs.
Data Source
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AI summary
The disclosure provides a battery module (100) and a battery pack. The battery module (100) includes a frame (10), a plurality of cells (20), and an output terminal base (30). The frame (10) includes side plates (11) opposite to each other and a first and a second end plates (12, 13) opposite to each other. The cells (20) are stacked and installed in the frame (10). The output terminal base (30) includes a high-voltage and a low-voltage output terminal installation portions (32) arranged side by side, and a limiting portion (33) formed by extending from a bottom portion of the low-voltage output terminal installation portion (32). A top portion of the first end plate (12) is provided with a limiting groove (121) wherein the limiting portion (33) is installed and an installation groove (122) wherein the high-voltage output terminal installation portion (31) is installed.