Battery Cell Support Plate Layout for Short-Circuit Isolation
Find Innovative SolutionsGenerate Solutions
Solution Overview
Problem
Conventional batteries face safety hazards due to short-circuiting and arcing caused by thermal runaway of multiple battery cells, which is exacerbated by inadequate insulation between cells and support plates.
Innovation Solution
The battery design includes spaced-apart support plates and insulating connection plates to prevent conduction between cells, enhancing insulation and reducing the risk of short-circuit loops, while using metal plates for thermal conduction and managing temperature through liquid-cooling.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Strength
If support plates are used to support battery cell groups, then the mechanical strength and stability are improved, but the risk of short-circuiting and arcing increases due to inadequate insulation between support plates
Solution Approach 1:
An insulating layer is introduced as an intermediary between adjacent support plates. This insulating layer prevents direct electrical contact between the metal support plates, eliminating the short-circuit path while maintaining the mechanical support function. The support plates retain their structural strength but are electrically isolated through the insulating mediator.
2Quantity of substance
If battery cells are arranged closely to increase density, then the space utilization is improved, but the insulation between cells deteriorates leading to higher short-circuit risk
Solution Approach 1:
The insulating function is extracted from the support plate structure itself and implemented as a separate insulating layer. This allows the support plates to be positioned closely for high density while the dedicated insulating layer maintains electrical isolation. The insulation is taken out as an independent component rather than relying on the support plate material or spacing.
3Temperature
If metal support plates are used for thermal conduction, then the heat dissipation efficiency is improved, but the electrical conduction between cells increases causing safety hazards
Solution Approach 1:
The support structure is segmented into multiple electrically isolated support plates rather than a continuous metal structure. Each support plate is electrically isolated from others through insulating layers, breaking the electrical conduction path while maintaining thermal management capability through the metal plates' inherent heat conduction properties.
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
This design significantly reduces the likelihood of short-circuiting and arcing, improves safety performance, and maintains high efficiency and cost-effectiveness by ensuring proper insulation and thermal management.
Implementation Method 1
connection plates, the connection plates being disposed between a side of the support plates facing away from the battery cell groups and the box body, and the connection plates being insulating members
Implementation Method 2
the support plates are metal plates, and the support plates are spaced apart from the box body... the thermal conduction efficiency of the support plates is enhanced
Implementation Method 3
improving the working efficiency and the working stability of the battery cells... managing temperature through liquid-cooling
Data Source
AI summary
A battery includes: a box body having a cavity; a plurality of battery cell groups accommodated in the cavity, the battery cell group each including a plurality of arranged battery cells; a plurality of support plates, the support plates being mounted in the cavity, the plurality of support plates being spaced apart from each other, and the support plates being metal plates, where the battery cell groups are mounted on the support plates such that the support plates support the plurality of battery cells, and the support plates each support at least one of the battery cell groups; and connection plates, the connection plates being disposed between a side of the support plates facing away from the battery cell groups and the box body, and the connection plates being insulating members and being respectively connected to the support plates and the box body.