Battery Pack Fixing Assembly for Detachable Cell Maintenance
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Solution Overview
Problem
Existing battery pack designs, primarily using adhesive fixation and welding for electrical connections, make it difficult to disassemble and maintain individual battery cells, leading to costly and inefficient maintenance processes.
Innovation Solution
A battery pack design featuring a fixing assembly with a connection hole and a current collecting assembly that uses gravity to secure battery cells and conductive portions for electrical connection, allowing for easy disassembly and maintenance without adhesives or welding.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Device complexity
If adhesive fixation is used to secure battery cells, then the battery pack structure is simplified, but the battery pack becomes difficult to disassemble for maintenance
Solution Approach 1:
The battery pack is divided into modular components: battery cells, fixing assembly, and current collecting assembly. Each module can be independently removed and replaced, enabling easy maintenance while keeping the overall structure simple.
Solution Approach 2:
The fixing assembly uses reversible mechanical fastening instead of permanent adhesive bonding. This dynamic connection allows the battery pack to transition between fixed and disassembled states, facilitating maintenance while maintaining structural simplicity.
2Reliability
If welding is used for electrical connection between battery cells, then the electrical connection reliability is improved, but the battery cells become impossible to disassemble for maintenance
Solution Approach 1:
The electrical connection system is segmented into separate current collecting members that can be independently removed. This allows individual battery cells to be accessed and replaced without affecting the welding of other cells, maintaining connection reliability while enabling maintenance.
Solution Approach 2:
The current collecting assembly is extracted as a separate removable module from the battery cells. This allows the electrical connection path to be disconnected and reconnected without permanent welding, ensuring reliable electrical connection while enabling easy maintenance of individual cells.
3Stability of the object's composition
If adhesive fixation with mechanical fastening is used, then the battery pack stability is improved, but the disassembly process becomes complex and time-consuming
Solution Approach 1:
The fixing assembly employs reversible mechanical fasteners that can be quickly engaged and disengaged. This dynamic fastening system provides stable fixation during operation but allows rapid disassembly for maintenance, reducing time loss compared to complex adhesive removal processes.
Solution Approach 2:
The fixing and electrical connection functions are segmented into separate assemblies that can be independently removed. This modular approach stabilizes the battery pack structure during operation while enabling quick maintenance by removing only the necessary modules rather than disassembling the entire pack.
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
Enables detachable maintenance of single battery cells, improving durability and reducing maintenance costs while ensuring reliable electrical connections and extended service life of the battery pack and vehicle.
Implementation Method 1
A battery pack design featuring a fixing assembly with a connection hole and a current collecting assembly that uses gravity to secure battery cells
Data Source
AI summary
Provided is a battery pack and a vehicle, which relates to the field of battery technologies. The battery pack according to the present disclosure includes a case, a plurality of battery cells, a fixing assembly, and a current collecting assembly. The case has a cavity. The plurality of battery cells is received in the cavity. Each of the plurality of battery cells includes at least one electrode terminal protruding from the battery cell. The at least one electrode terminal faces downwards when the battery cell is arranged in the cavity. The fixing assembly is arranged below the plurality of battery cells and supports the plurality of battery cells. The fixing assembly has a connection hole. The current collecting assembly is arranged at the fixing assembly and includes a current collecting member configured to electrically connect at least two adjacent battery cells of the plurality of battery cells.