Battery Subunit Carrier Plate Grooves for Condensation Drainage
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Solution Overview
Problem
Lithium ion battery systems face safety and quality issues due to condensation water and leakage from thermal management systems causing potential short circuits and corrosion, especially when battery subunits are stacked, leading to reduced product quality and increased safety risks.
Innovation Solution
A battery subunit design featuring a carrier unit with grooves and connecting elements that collect and drain off condensation water and leakage from the thermal management system, integrated with the battery modules to prevent damage and enhance safety, using a carrier plate with U-shaped grooves and profile elements to facilitate fluid flow and drainage.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Quantity of substance
If battery subunits are stacked to achieve greater packing densities, then the energy density and space utilization are improved, but the risk of condensation water and leakage causing damage to lower subunits increases
Solution Approach 1:
A carrier unit is introduced as an intermediary component between stacked battery subunits. This carrier unit includes a carrier plate with grooves that collect and drain condensation water and leakage fluids, preventing them from damaging lower subunits while enabling safe stacking to improve packing density
Solution Approach 2:
The harmful fluids (condensation water and leakage) are extracted and removed from the system through drainage channels and grooves in the carrier unit, preventing accumulation and potential damage to stacked battery subunits
2Temperature
If thermal management systems are integrated with battery modules, then heat dissipation performance is improved, but the potential for fluid leakage and condensation water damage increases
Solution Approach 1:
The carrier unit converts the potentially harmful fluids (leakage and condensation water) into a manageable flow by providing grooves and drainage channels that direct these fluids to collection areas, transforming a hazard into a controlled drainage system
Solution Approach 2:
The carrier plate acts as an intermediary between the thermal management system and the battery modules, providing a protected interface that allows thermal management fluids to flow while preventing uncontrolled leakage and condensation water damage
Data Source
AI summary
A battery subunit includes multiple battery modules that are connected to one another in a parallel and/or series manner, and a thermal management system that contacts each of the multiple battery modules. Each of the multiple battery modules has respective multiple battery cells. The thermal management system is configured to dissipate heat that occurs during operation of the multiple battery modules. The battery subunit further includes a carrier unit that comprises at least one carrier plate positioned on a side of the thermal management system that is remote from the battery modules. The thermal management system is configured to at least partially receive, and on at least two opposite lying edges comprises, in each case, one or multiple grooves configured to collect and/or drain off at least one of fluids that are situated in the at least one carrier plate, and condensation water and/or leakage from the thermal management system.