Battery Cell Thermal Conduction Structure for Energy-Dense Cooling
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Solution Overview
Problem
The challenge in improving the thermal management performance of batteries, particularly in new energy vehicles, lies in effectively managing heat conduction to enhance the service life and safety of power batteries while maintaining energy density.
Innovation Solution
A battery design incorporating a thermally conductive member that is thermally connected to the first wall of the battery cell, allowing for efficient heat exchange with a heat exchange medium to regulate the battery's temperature, thereby improving thermal management.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Use of energy by moving object
If energy density is improved, then battery performance is enhanced, but 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 includes a heat exchange cavity that accommodates the heat exchange medium, enabling efficient heat transfer from the battery cell to the medium without compromising the battery's energy density design.
Solution Approach 2:
The thermally conductive member extends in the thickness direction of the battery cell, creating a three-dimensional heat exchange structure. This dimensional approach allows heat to be conducted from the first wall (largest area wall) of the battery cell through the thermally conductive member to the heat exchange medium, effectively managing thermal performance while preserving energy density.
2Reliability
If thermal management performance is improved, then service life and safety are enhanced, but device complexity increases
Solution Approach 1:
The thermally conductive member serves multiple functions: it acts as a heat conduction path, provides structural support, and contains the heat exchange medium within its cavity. By combining these functions into a single component, the design improves service life and safety without proportionally increasing overall structure complexity.
Solution Approach 2:
The thermally conductive member integrates the heat exchange cavity and the conduction structure into one unified component. This merging of functions reduces the number of separate parts needed, thereby enhancing thermal management and reliability while controlling structural complexity.
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 effectively enhances heat conduction within the battery, improving both the service life and safety performance by ensuring efficient thermal management, while maintaining energy density.
Implementation Method 1
a thermally conductive member for accommodating a heat exchange medium, the thermally conductive member is arranged in the accommodating cavity, is thermally conductively connected with the first wall, and the heat exchange medium exchanges 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. The box is provided with an accommodating cavity, and the battery cell is accommodated in the accommodating cavity. An electrode assembly and an electrode terminal of the battery cell are electrically connected with each other. The battery cell comprises a first wall, and the first wall is the wall with the largest area in the battery cell. The thermally conductive member is arranged in the accommodating cavity, the thermally conductive member is thermally conductively connected to the first wall, and the heat exchange medium exchanges heat with the battery cell via the thermally conductive member to adjust the temperature of the battery cell.