Structural Battery Thermal Conduction Path for Internal Heat Dissipation
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Solution Overview
Problem
Batteries tend to heat up due to limited thermal conductivity, leading to potential damage and degradation, as the internal parts can be warmer than the exterior, necessitating effective heat dissipation.
Innovation Solution
Incorporating a thermal conductive path within the electrochemical device, which can be made of thermal conductive materials like metal, exposed to the exterior or thermally coupled to the case, to enhance heat dissipation using air, liquid, or solid cooling methods, and integrating sensors for monitoring and diagnostic purposes.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Temperature
If conventional battery structure is used, then manufacturing simplicity is maintained, but thermal conductivity is insufficient causing internal overheating
Solution Approach 1:
The battery structure is segmented into multiple functional layers including a thermal conductive layer with specific thermal conductivity (≥1 W/m·K) that is distinct from the electrode and separator layers. This segmentation allows the thermal management function to be separated and optimized independently while maintaining overall battery functionality.
Solution Approach 2:
A thermal conductive layer is introduced as an intermediary component between the electrodes and the battery case. This layer acts as a thermal mediator that facilitates heat transfer from the internal electrodes to the external environment, improving thermal conductivity without fundamentally redesigning the entire battery structure.
2Loss of energy
If thermal conductive materials are added to improve heat dissipation, then thermal management is enhanced, but device complexity increases
Solution Approach 1:
The thermal conductive layer serves multiple functions simultaneously: it acts as a thermal management component for heat dissipation, provides structural support within the battery assembly, and maintains electrical isolation between components. This multi-functionality reduces the need for separate dedicated components for each function.
Solution Approach 2:
The invention changes the thermal conductivity parameter of the battery structure by selecting materials with specific thermal conductivity values (≥1 W/m·K for the thermal conductive layer). This parameter-based approach allows optimization of heat dissipation by selecting appropriate materials rather than adding complex active cooling systems.
3Stability of the object's composition
If internal thermal conductivity is improved, then internal temperature uniformity increases, but manufacturing complexity increases
Solution Approach 1:
The thermal conductive layer is implemented as a thin film or flexible layer that can be easily integrated into the existing battery manufacturing process. This thin-film approach maintains temperature homogeneity without requiring thick or rigid thermal management components that would complicate assembly.
Solution Approach 2:
The thermal conductive layer is designed to be homogeneous in its thermal properties throughout the battery structure, ensuring uniform heat distribution and dissipation. This homogeneity simplifies manufacturing by allowing the use of uniform materials and consistent assembly procedures rather than requiring complex variable-property structures.
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 improves thermal conductivity and homogeneity, extends cycle and shelf life, enhances electrochemical performance, and facilitates thermal and safety management, allowing for efficient charge/discharge processes and continuous use.
Implementation Method 1
Incorporating a thermal conductive path within the electrochemical device, which can be made of thermal conductive materials like metal, exposed to the exterior or thermally coupled to the case, to enhance heat dissipation
Data Source
AI summary
A structural battery that consists essentially of (a) a frame that consists essentially of frame conductive elements, frame insolating elements and one or more fluid conductive paths; (b) one or more inner space pairs, each inner space pair (i) consists essentially of a first inner space and a second inner space, (ii) is associated with a fluid conductive path of the one or more fluid conductive paths, (iii) and has the first inner space located at one side of the fluid conductive path and has the second inner space located at another side of the fluid conductive path; (c) one or more cell cores pairs, each cell cores pair (i) consists essentially of a first cell core and a second cell core, (ii) is associated with the fluid conductive path of the one or more fluid conductive paths, and (iii) has the first cell core located within a first inner space associated with the fluid conductive path and has the second cell core located within a second inner space associated with the fluid conductive path.