Upside-Down Battery Cell Support Structure for Higher Energy Density
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Solution Overview
Problem
The energy density of existing batteries is low, leading to inefficient use of space and poor structural rigidity, which can result in safety accidents and performance issues when integrated into electrical apparatus.
Innovation Solution
A battery design featuring a box body with a top and bottom configuration, where battery cells are arranged upside down and supported by a stabilizing assembly with suspension beams, preventing direct contact between the top cover plate and support plate, and incorporating a pressure relief mechanism to enhance safety and structural stability.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Quantity of substance
If battery cells are arranged upside down with top cover plate facing bottom to improve energy density, then space utilization is improved, but structural stability deteriorates
Solution Approach 1:
The stabilizing assembly is divided into multiple support plates (first support plate at top, second support plate at bottom) that separately support different battery cells. This segmentation allows the upside-down arrangement for energy density while maintaining structural stability through distributed support points.
2Ease of manufacture
If second support plate directly contacts top cover plate to simplify structure, then manufacturing is easier, but battery performance deteriorates due to direct abutment
Solution Approach 1:
Suspension beams serve as intermediary elements between the second support plate and the top cover plate. These beams prevent direct contact and abutment while still providing structural support, thus maintaining battery performance without significantly complicating the manufacturing process.
3Weight of moving object
If battery has poor rigidity to reduce weight, then weight is reduced, but safety deteriorates due to inability to bear load
Solution Approach 1:
The stabilizing assembly uses composite structural design combining support plates and suspension beams that provide high rigidity and load-bearing capacity. This allows the battery to maintain safety and structural integrity without excessive weight, as the composite structure efficiently distributes mechanical loads.
4Reliability
If suspension beam extension height is increased to suspend electrode terminals, then electrical connection is improved, but device complexity increases
Solution Approach 1:
The suspension beams serve multiple functions: they provide structural support for battery cells, prevent direct contact between the support plate and top cover plate, and suspend the electrode terminals to ensure proper electrical connection. This multi-functionality reduces the need for additional separate components, thereby limiting the increase in device complexity.
Data Source
AI summary
A battery includes a box body, battery cells and a stabilizing assembly. The box body has a top and a bottom opposite to each other in a height direction of the box body. A plurality of battery cells are arranged upside down in the box body, and a top cover plate of each of the battery cells faces the bottom of the box body. The stabilizing assembly is fixedly connected to the battery cells.