Vehicle Storage Module Insulation and Heat Dissipation
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Solution Overview
Problem
Existing motor vehicle power supply devices face challenges in achieving compact design while ensuring effective electrical insulation of the cell pack from surrounding components and providing adequate heat dissipation to prevent overheating.
Innovation Solution
The solution involves a cell stack clamped by plate-like elements, with an outer wall insulation and base insulation that overlap to create a sufficient creepage distance, and a heat-conducting element thermally coupled to the storage cell housings via electrically insulating materials, allowing for compact design and efficient heat dissipation.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Volume of moving object
If the storage module is designed to be compact, then the installation space is reduced, but the creepage distance between storage cell housings and surrounding components becomes insufficient
Solution Approach 1:
The insulation system transitions from a two-dimensional planar arrangement to a three-dimensional overlapping configuration. The outer wall insulation and base insulation overlap vertically and horizontally to create a multi-dimensional insulation barrier that achieves sufficient creepage distance within a compact footprint.
Solution Approach 2:
The patent combines two different insulation components (outer wall insulation and base insulation) into a composite insulation system. This composite structure leverages the complementary geometries of both insulations to create overlapping regions that simultaneously provide electrical insulation and achieve the required creepage distance in a compact arrangement.
2Reliability
If electrical insulation is enhanced between storage cell housings and surrounding components, then safety is improved, but the device complexity increases
Solution Approach 1:
The outer wall insulation and base insulation serve multiple functions simultaneously: they provide electrical insulation between storage cell housings and surrounding components, manage thermal pathways, and create the required creepage distance. This multi-functionality reduces the need for separate dedicated components for each function.
Solution Approach 2:
The patent merges the electrical insulation function with the structural support and thermal management functions by integrating the insulation components into the existing mechanical framework. The insulations are positioned to work with the plate-like elements and clamping elements, combining multiple functions into a unified structure.
3Temperature
If the storage cell housings are thermally coupled to a heat-conducting element, then heat dissipation is improved, but electrical insulation requirements become more stringent
Solution Approach 1:
The base insulation acts as an intermediary component between the storage cell housings and the heat-conducting element. It provides the necessary electrical insulation while allowing thermal coupling to occur, mediating between the conflicting requirements of electrical isolation and thermal connection.
Solution Approach 2:
The insulation system applies different properties to different locations: the base insulation provides electrical insulation at the interface between storage cell housings and the heat-conducting element, while the outer wall insulation provides insulation at the lateral interfaces. Each location receives the appropriate insulation type for its specific requirements.
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 configuration ensures electrical insulation and heat dissipation, enabling a compact and safe high-voltage storage module that meets safety requirements for motor vehicle applications.
Implementation Method 1
The heat generated in the storage cells is released to the heat-conducting element via the base insulation
Implementation Method 2
Undersides of the storage cell housing are thermally coupled to a thermally conductive element in an electrically insulating manner via a base insulation
Implementation Method 3
an outer wall insulation, which extends like a ring or sleeve along the outer walls of the storage cell around the cell stack and electrically insulates the storage cell housing or the cell stack in relation to the plate-like elements and/or the clamping elements
Implementation Method 4
A heat-conducting element designed, for example, like a plate can be provided for this purpose. The thermally conductive element can be thermally coupled to undersides of the storage cell housing
Data Source
AI summary
Apparatus for supplying voltage to a motor vehicle, in particular storage module, comprising ° a cell stack with a plurality of storage cells, which each have a storage cell housing, ° a front and a rear plate-like element, which are each connected to one another via a left-hand and a right-hand clamping element, wherein the cell stack is clamped in between the plate-like elements by means of the clamping elements. In addition, outer wall insulation is provided which extends in the manner of a ring or sleeve along storage cell outer walls around the cell stack and electrically insulates the cell stack with respect to the plate-like elements and/or the clamping elements.