Battery Module Subunit With Segmented Cooling And Insulation
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Solution Overview
Problem
Existing battery module cooling systems lack efficient and reliable methods for cooling battery cell stacks while preventing contact between temperature-control fluids and cells, and ensuring electrical insulation and safety.
Innovation Solution
A subunit of a battery module design featuring integrally bonded receiving elements forming separate spaces for battery cells and temperature-control fluids, with an elastically deformable compensating element and electrically insulating elements to prevent fluid-cell contact and enhance safety, allowing for compact and reliable cooling.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Temperature
If cooling ducts are integrated between battery cells, then cooling efficiency is improved, but risk of fluid leakage and electrical short circuits increases
Solution Approach 1:
The cooling system is segmented into modular subunits, each handling a specific battery cell or stack. The receiving elements are divided into separate first receiving elements for battery cells and second receiving elements for cooling fluid, creating isolated compartments that prevent fluid leakage and electrical contact while maintaining efficient cooling pathways between adjacent cells.
Solution Approach 2:
Electrically insulating elements are introduced as intermediaries between the battery cells and cooling fluid receiving elements. These insulating elements act as mediators that allow thermal energy transfer while preventing electrical contact and fluid leakage, thus resolving the contradiction between cooling efficiency and safety.
2Volume of moving object
If battery cells are tightly packed for compactness, then space utilization is improved, but thermal management and safety are compromised
Solution Approach 1:
The design implements a nested structure where battery cells are positioned within first receiving elements, and cooling fluid receiving elements are integrated around them. The electrically insulating elements are nested between the cells and cooling fluid pathways, creating a compact multi-layered arrangement that maximizes space utilization while maintaining thermal management and safety.
3Reliability
If receiving elements are integrally bonded for reliability, then connection strength is improved, but manufacturing complexity increases
Solution Approach 1:
The first and second receiving elements are integrally bonded together to form a unified subunit structure. This merging of components creates reliable connections that prevent fluid leakage and maintain structural integrity, while the modular subunit design allows for standardized manufacturing processes that can reduce overall manufacturing complexity.
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 subunit design effectively prevents fluid-cell contact, ensures electrical insulation, and facilitates reliable cooling of battery modules, enhancing safety and compactness, suitable for various applications including electric vehicles and mobile devices.
Implementation Method 1
The compensating element is designed to be elastically and/or plastically deformable. As a result, it is possible for the compensating element to be able to compensate for changes in volume, which are referred to as a protuberance, of the at least one battery cell stack
Implementation Method 2
The compensating element is designed to be elastically and/or plastically deformable
Implementation Method 3
the first receiving space furthermore has an insulating element which is designed to be electrically insulating. It is therefore possible to prevent an electric contact connection between the at least one battery cell stack or the at least one battery cell and the first receiving element and the second receiving element
Implementation Method 4
Such an integrally bonded connection can be formed, for example, in a welded manner, preferably in a laser-welded manner
Data Source
AI summary
A subunit of a battery module (2), comprising a first receiving element (3) and a second receiving element (4) which are connected to each other, forming at least one first receiving space (7) and at least one second receiving space (8), wherein the first receiving space (7) and the second receiving space (8) are separated from each other, and at least one battery cell stack (5) or at least one battery cell (6) is arranged in the first receiving space (7), and the second receiving space (8) is configured for receiving a temperature-control fluid (9).