Temperature Control Plate Sealing for EV Battery Safety
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Solution Overview
Problem
Temperature control systems for energy stores in electric and hybrid vehicles face challenges in preventing the contact between temperature control fluids and energy storage cells, which can lead to damage or injury.
Innovation Solution
A temperature control system with a sealing mechanism that includes an intermediate sealing portion and a collection passage to prevent fluid contact, utilizing a contact plate and base plate with a flow space for temperature control, where the sealing portion is arranged circumferentially to ensure complete sealing and includes a return device to manage leaking fluid, maintaining operational safety.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Temperature
If a temperature control plate with flow space is used to cool/heating energy storage cells, then temperature control effectiveness is improved, but the risk of fluid contact with energy storage cells increases
Solution Approach 1:
A sealing portion is introduced as an intermediary element between the flow space containing temperature control fluid and the energy storage cells. This sealing portion includes a sealing element that extends into the flow space to form a sealing surface, creating a barrier that prevents fluid contact with energy storage cells while maintaining thermal control functionality.
Solution Approach 2:
The temperature control plate is segmented into distinct functional zones: a flow space for fluid circulation, a sealing portion with sealing elements to prevent fluid leakage, and contact surfaces for thermal interaction with energy storage cells. This segmentation allows independent optimization of each zone's function.
2Reliability
If sealing structures are added to prevent fluid contact, then safety is improved, but device complexity increases
Solution Approach 1:
The sealing portion serves multiple functions simultaneously: it acts as a barrier to prevent fluid contact, provides structural support within the temperature control plate, and maintains the integrity of the flow space. By combining multiple functions into a single component, overall device complexity is reduced.
Solution Approach 2:
The sealing element is designed as a flexible component that can deform to accommodate manufacturing tolerances and thermal expansion, ensuring reliable sealing without requiring complex adjustment mechanisms. The flexible nature of the sealing element allows it to conform to the sealing surface while maintaining contact pressure.
3Duration of action of moving object
If collection passage and return device are added to manage leakage, then operational continuity is improved, but manufacturing complexity increases
Solution Approach 1:
The collection passage and return device are pre-integrated into the temperature control plate design, creating a passive leakage management system that automatically redirects fluid before it can contact energy storage cells. This preliminary arrangement of fluid pathways eliminates the need for active monitoring or intervention systems.
Solution Approach 2:
The collection passage and return device are merged with the main flow space to form an integrated fluid management system. The collection passage is positioned to receive any leakage directly from the sealing portion, and the return device provides a direct pathway back to the fluid supply, creating a self-contained leakage management loop.
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
The system effectively prevents fluid contact with energy storage cells, ensuring safe operation and extended lifespan by maintaining a predefined temperature range while allowing for continuous operation even in case of leakage, with enhanced protection and reduced mechanical resistance.
Implementation Method 1
A temperature control fluid, which flows through this flow space, makes possible by way of a heat absorption and/or heat emission an operation of the energy store, in particular of the energy storage cell, within a predefined temperature range
Implementation Method 2
The temperature control plate forms at least one sealing portion for sealing the flow space relative to an interior space of the energy store, in order to prevent a contacting of the temperature fluid, which can flow through the flow space, with an energy storage cell of the energy store
Data Source
AI summary
The present disclosure describes a temperature control system for an energy store of a motor vehicle, e.g., an electric and/or hybrid vehicle. The temperature control system includes at least one temperature control plate including at least one contact plate and at least one base plate. The at least one contact plate has at least one surface portion for contacting the at least one energy storage cell. The at least one temperature control plate defining at least one sealing portion for sealing a at least one flow space relative to an interior space of the energy store. The at least one sealing portion comprises at least one intermediate sealing portion and at least one collection passage. The at least one sealing portion includes at least one safety seal, structured and arranged to seal the at least one collection passage relative to the interior space.