Battery Cell Thermal Conduction Structure for Safe Pack Cooling
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Solution Overview
Problem
Current batteries have low energy density, poor rigidity, and inadequate thermal management, leading to safety concerns and reduced performance in new energy vehicles.
Innovation Solution
A battery design featuring a box with a thermally conductive member connected to the battery cell's first wall, allowing for effective heat conduction and improved thermal management, while ensuring the electrode terminal faces the bottom wall for enhanced safety and structural integrity.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Reliability
If the battery cell is fixed with the electrode terminal facing the bottom wall, then the safety is improved, but the thermal management performance deteriorates
Solution Approach 1:
A thermally conductive member is introduced as an intermediary between the battery cell and the heat exchange medium. This member is thermally conductively connected to the first wall of the battery cell and accommodates the heat exchange medium, enabling efficient heat transfer while maintaining the safety-oriented configuration with the electrode terminal facing the bottom wall.
Solution Approach 2:
The thermal management solution transitions from direct contact thermal management to a dimension involving a thermally conductive member that extends the heat transfer path. This member creates a thermal conduction pathway through its structure, allowing heat to be efficiently transferred from the battery cell to the heat exchange medium without compromising the safety configuration.
2Quantity of substance
If the energy density is improved, then the space utilization is enhanced, but the rigidity deteriorates
Solution Approach 1:
The thermally conductive member serves multiple functions simultaneously: it acts as a structural support element that enhances rigidity, provides a thermal management pathway for heat dissipation, and maintains the spatial configuration for high energy density. This multi-functional component resolves the contradiction between energy density and rigidity.
Solution Approach 2:
The thermally conductive member is made of a material that combines high thermal conductivity with high mechanical strength and rigidity. This composite material property allows the member to provide both thermal management functionality and structural support, enabling the battery to achieve high energy density without sacrificing rigidity.
3Temperature
If the thermal management performance is improved, then the heat conduction is enhanced, but the device complexity increases
Solution Approach 1:
The thermally conductive member integrates the functions of structural support and thermal management into a single component. By merging these two functions, the design avoids the need for separate structural supports and thermal management components, thereby reducing overall device complexity while achieving effective heat conduction.
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 enhances the energy density, safety, and thermal management of batteries, improving their performance and service life by efficiently conducting heat and distributing stress.
Implementation Method 1
a thermally conductive member for accommodating a heat exchange medium and arranged in the accommodating cavity, the thermally conductive member being arranged opposite and thermally conductively connected to the first wall, and the heat exchange medium exchanging heat with the battery cell through the thermally conductive member
Data Source
AI summary
A battery and an electrical apparatus are provided. The battery includes a box, a battery cell, and a thermally conductive member for accommodating a heat exchange medium. An accommodating cavity of the box includes a top wall and a bottom wall which are oppositely arranged in a vertical direction, and the battery cell is accommodated in the accommodating cavity. The battery cell includes an electrode terminal, and the battery cell is fixed in the accommodating cavity so that the electrode terminal faces the bottom wall of the accommodating cavity. The battery cell includes a first wall which is the wall with the largest area in the battery cell. The thermally conductive member is provided in the accommodating cavity and arranged opposite and thermally conductively connected to the first wall, and the heat exchange medium exchanges heat with the battery cell through the thermally conductive member.