Battery Control Electronics Passive Cooling via Segmented Housing
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Solution Overview
Problem
Existing battery arrangements face challenges in efficiently and cost-effectively dissipating heat generated by control electronics systems, which complicates the design and production of battery housings and requires costly active cooling methods.
Innovation Solution
A battery arrangement where the control electronics system is housed outside the battery housing, with a module housing and heat-conducting element that dissipates heat to the module housing via conduction, and further to a structural metal component for passive cooling through natural convection, allowing for a simpler and more cost-effective construction.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Ease of manufacture
If the control electronics system is integrated inside the battery housing, then the battery housing structure becomes complex and production costs increase, but the heat dissipation path is shortened
Solution Approach 1:
The patent divides the battery system into separate modules: the battery housing containing battery cells and the control electronics housing containing the control electronics system. This segmentation allows each component to be optimized independently - the battery housing can be produced using simple stamping and shaping methods without complex integrations, while the control electronics has its own dedicated housing with integrated heat dissipation features.
Solution Approach 2:
The patent introduces a heat-conducting element as an intermediary between the control electronics system and the control electronics housing. This intermediary component efficiently transfers heat from the control electronics to the housing structure, enabling effective heat dissipation despite the spatial separation from the battery housing.
2Temperature
If active cooling methods are used for the control electronics system, then heat dissipation effectiveness is improved, but system complexity and cost increase
Solution Approach 1:
The control electronics housing is designed to serve its own cooling needs through passive heat dissipation. The housing structure itself acts as a heat sink, utilizing natural convection and radiation to dissipate heat from the control electronics system without requiring external active cooling systems.
Solution Approach 2:
The patent extracts the control electronics system from the battery housing and places it in a separate control electronics housing. This extraction allows the control electronics to have its own dedicated heat dissipation pathway through the control electronics housing, eliminating the need for complex active cooling systems that would be required if integrated inside the battery housing.
3Temperature
If the battery housing is designed with integrated control electronics housing, then thermal coupling is improved, but manufacturing simplicity is reduced
Solution Approach 1:
The patent segments the battery system into distinct battery housing and control electronics housing components. The battery housing can be manufactured using simple stamping and shaping methods without the complexity of integrating control electronics housing features. The control electronics housing separately provides the necessary thermal coupling for its own cooling needs.
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 solution enables efficient passive cooling of the control electronics system without active cooling, simplifying the battery housing design and production while effectively dissipating heat, thereby reducing costs and improving thermal management.
Implementation Method 1
A module heat-conducting element is provided between the control electronics system and the module housing. The module heat-conducting element dissipates heat from the control electronics system to the module housing by heat conduction.
Implementation Method 2
the discharged heat can be dissipated readily via this outer side. For example, the module housing can project from the battery housing in a comparable manner to a cooling fin and can be cooled by natural convection.
Data Source
AI summary
A battery arrangement (10) for an electrically drivable motor vehicle has a battery housing (12) for receiving battery cells for electrically driving the motor vehicle. A control electronics system (14) is provided outside the battery housing (12) for controlling the battery cells. A module housing (16) is connected to the battery housing (12) for covering the control electronics system (14) and a module heat-conducting element (28) is provided between the control electronics system (14) and the module housing (16) so that heat generated in the control electronics system (14) is dissipated to the module housing (16) by heat conduction. The module housing (16) and the module heat element (28) passively cool the control electronics system (14), which is provided outside the battery housing (12), thereby providing simple and cost-effective dissipation of heat produced in the battery arrangement (10).