Battery Cell Housing With Integrated Spacers for Liquid Cooling
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Solution Overview
Problem
The production of liquid-cooled batteries with multiple spacer elements is complex and costly due to the need for separate spacer elements to provide reliable positioning and efficient cooling of battery cells.
Innovation Solution
Integrating a projecting spacer structure formed by the side walls of the cell housing, which creates intermediate spaces for cooling liquid flow, allowing for efficient cooling and positioning without additional spacer elements, and using a metal housing with parallel ribs for enhanced heat exchange and cost-effective production.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Reliability
If separate spacer elements are used between adjacent battery cells, then reliable positioning and efficient cooling are achieved, but production complexity and costs increase
Solution Approach 1:
The spacer structure is merged with the side wall to form an integrated component. The side wall includes a spacer structure that protrudes from its outer side, eliminating the need for separate spacer elements. This integration maintains positioning reliability while significantly reducing production complexity by reducing the number of discrete parts and assembly steps.
Solution Approach 2:
The side wall serves multiple functions: it provides structural support for the battery cell, forms part of the sealed housing, and through its integrated spacer structure, provides both positioning and cooling channel formation. This multi-functionality eliminates the need for dedicated spacer elements that would otherwise be required for positioning and cooling.
2Temperature
If multiple separate spacer elements are used, then cooling efficiency is improved, but manufacturing cost increases
Solution Approach 1:
The cooling channels are formed by the integrated spacer structure that is part of the side wall itself. The spacer structure creates channels between adjacent battery cells through which cooling liquid flows, providing efficient cooling without requiring separate cooling components. This integration reduces manufacturing cost by reducing part count and assembly complexity.
3Manufacturing precision
If separate spacer elements are used for positioning, then positioning accuracy is improved, but the number of components increases
Solution Approach 1:
The positioning function is merged into the side wall through the integrated spacer structure. The spacer structure protrudes from the side wall and engages with adjacent cells to provide precise positioning in the stacked configuration. This eliminates the need for separate positioning components while maintaining positioning accuracy.
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 approach enables a cost-effective production of batteries with efficiently cooled cells, ensuring reliable positioning and efficient heat exchange through integrated spacer structures within the cell housing, reducing production complexity and costs.
Implementation Method 1
a cooling liquid can flow through said intermediate space during operation of the battery
Implementation Method 2
cooling liquid flows around the battery cell during operation of the battery
Data Source
AI summary
A battery cell including a cell housing having a first side wall and a second side wall which is parallel to the first side wall. A projecting spacer structure which is formed by the respective side wall is provided on an outer side of the first side wall and/or on an outer side of the second side wall. A liquid-cooled battery includes a plurality of battery cells, which are stacked such that the second side wall of a first battery cell abuts the first side wall of an adjacent second battery cell and a spacer structure of the second side wall of the first battery cell and/or a spacer structure of the first side wall of the second battery cell form at least one respective intermediate space between two adjacent battery cells which is configured such that a cooling liquid (K) flows through the intermediate space during operation.