Battery Output Electrode Mounting for Higher Cell Packing Density
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Solution Overview
Problem
Current battery technologies face challenges in achieving high energy density due to low space utilization within the battery enclosure, primarily because the fixed base for the output electrode occupies significant space, limiting the packing efficiency of battery cells.
Innovation Solution
The battery design incorporates a separation beam within the enclosure to support the fixed base, allowing the output electrode to be fixed directly to it, thereby reducing the thickness of the end plate and optimizing space usage, enabling higher energy density by eliminating the need for a thick end plate and improving the assembly efficiency.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Reliability
If the fixed base is directly installed in the box to support the output electrode, then the output electrode can be stably fixed, but the fixed base occupies significant space reducing the energy density
Solution Approach 1:
The support structure is segmented into two functional parts: the separation beam (which provides structural division and support) and the fixed base (which only needs to provide electrical connection). This segmentation allows the fixed base to be smaller and mounted on the separation beam rather than occupying space in the box, resolving the contradiction between stability and space utilization.
Solution Approach 2:
The separation beam acts as an intermediary component between the box and the fixed base. Instead of directly mounting the fixed base in the box, it is mounted on the separation beam, which serves as a mediator. This intermediary approach reduces the space occupied by the fixed base while maintaining its stability and electrical connection function.
2Strength
If a thick end plate is used to support the fixed base, then the structural strength is sufficient, but the space utilization rate inside the box decreases
Solution Approach 1:
The separation beam is designed with multi-functionality: it serves as both the structural divider/separatrix within the battery pack and as the support mounting surface for the fixed base. This eliminates the need for a separate thick end plate, as the separation beam performs both structural and support functions simultaneously, resolving the contradiction between strength and space utilization.
Solution Approach 2:
Instead of providing structural support through increased thickness in the vertical dimension (which would reduce horizontal space), the separation beam provides support through its horizontal extension and structural design. The support function is achieved by utilizing the separation beam's surface area and structural integrity rather than increasing thickness, effectively moving the support mechanism to a different dimensional approach.
3Reliability
If the separation beam extends significantly in the first direction, then it provides adequate support for the fixed base, but it occupies more space reducing battery cell packing
Solution Approach 1:
The separation beam is designed with localized reinforcement and optimization: it extends sufficiently in the first direction only where needed to provide support for the fixed base and maintain structural integrity, while minimizing extension in areas where it would interfere with battery cell packing. The beam's cross-sectional dimensions and material properties are optimized to provide adequate support with minimal space occupation, resolving the contradiction between support capability and space efficiency.
Data Source
AI summary
A battery and an electrical device are provided. The battery includes a box, a battery cell group, a separation beam, a fixed base and an output electrode; the battery cell group is provided in the box, and the battery cell group includes a plurality of battery cells which are stacked in a first direction and electrically connected to each other; the separation beam is fixed in the box, and the separation beam is located at one side of the battery cell group in the first direction; the fixed base is installed on the separation beam; the output electrode is used to output the electric energy of the battery cell group, the output electrode is fixed to the fixed base.