Battery Module Thermal Conduction Layout for Switch Heat Dissipation
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Solution Overview
Problem
Existing battery modules face challenges in reliably dissipating heat generated by switching devices, particularly at the positive voltage tap, which can lead to increased temperature and reduced service life.
Innovation Solution
The battery module design incorporates thermally conductive connecting elements mounted in recesses within the housing, along with a thermally conductive leveling material and a retaining element to ensure effective heat dissipation, using materials like copper, aluminum, or ceramic, and a temperature control element for active cooling.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Adaptability or versatility
If switching devices are used to regulate voltage in battery modules, then voltage regulation capability is improved, but heat generation increases leading to temperature rise and reduced service life
Solution Approach 1:
The patent extracts the heat dissipation function from the conventional air cooling method and implements a dedicated thermal conduction path. Thermally conductive connecting elements are introduced to conduct heat away from the switching device and positive voltage tap to the housing, separating the voltage regulation function from the heat dissipation function to effectively manage temperature rise.
Solution Approach 2:
The patent introduces thermally conductive connecting elements as intermediary components between the switching device/positive voltage tap and the housing. These connecting elements serve as thermal mediators that efficiently transfer heat from the high-temperature components to the housing, which acts as a heat sink, thereby reducing the temperature at critical points without interfering with the voltage regulation function.
2Device complexity
If conventional air convection cooling is used for switching devices, then device simplicity is maintained, but heat dissipation reliability is insufficient under high current conditions
Solution Approach 1:
The patent merges the electrical connection function with the thermal conduction function by using the same connecting elements to provide both electrical connectivity and heat dissipation pathways. The connecting elements are thermally conductive and electrically conductive, combining two functions into one component to improve heat dissipation reliability without significantly increasing device complexity.
Solution Approach 2:
The housing serves multiple functions: it provides structural support, electrical insulation, and acts as a heat sink for dissipation. The connecting elements also serve dual purposes of electrical connection and thermal conduction. This multi-functionality approach improves heat dissipation reliability while maintaining relatively simple device architecture.
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 design maintains low temperatures at the positive voltage tap, enhancing the service life and adaptability of the switching device to high current demands, ensuring reliable operation under demanding conditions.
Implementation Method 1
The first connecting element and/or the second connecting element are thermally conductive and mounted in a recess in the housing of the battery module
Implementation Method 2
a temperature control element for active cooling
Data Source
Figure 1
Figure 2a~2b
Figure 3a
AI summary
The invention relates to a battery module with a plurality of battery cells (2), in particular lithium-ion battery cells (20), which are each electrically connected in series and/or in parallel with one another, and a switching device (3) which has a first connection (31) and a second connection (32), wherein a first electrically conductive connecting element (41) connects the first connection (31) electrically to a voltage tap (5) of a terminally arranged battery cell (2, 21) and a second electrically conductive connecting element (42) connects the second connection (32) electrically to a voltage tap (6) of the battery module (1), wherein the first connecting element (41) and/or the second connecting element (42) are thermally conductively received in a receptacle (7, 71, 72) of the housing (10) of the battery module (1).