Battery Cell Thermal Channel Integration for Pack Space Efficiency
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Solution Overview
Problem
Current battery technologies face challenges in improving energy density while ensuring effective thermal management, leading to issues such as thermal runaway and reduced service life due to inadequate heat dissipation.
Innovation Solution
Incorporating a thermal management component with a flow channel connected to the largest surface area of each battery cell, where the flow channel size and battery capacity ratio satisfy 1.0 Ah/mm ≤ Q/W ≤ 400 Ah/mm, allowing for efficient heat dissipation without the need for additional structures within the battery box, thereby enhancing space utilization and thermal management.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Temperature
If additional structures such as beams are disposed in the middle of the battery box to manage thermal, then thermal management is ensured, but space utilization rate decreases and energy density is reduced
Solution Approach 1:
The patent merges the thermal management function with the battery cell structure itself by integrating cooling channels directly into the battery cell housing. This eliminates the need for separate beam structures in the battery box, as the cooling channels perform the thermal management function that would otherwise require additional components. The merging of functions increases space utilization while maintaining thermal control.
Solution Approach 2:
The battery cell structure is designed to serve multiple functions: it provides structural support, contains the electrochemical components, and simultaneously acts as a thermal management system through integrated cooling channels. This multi-functionality eliminates the need for separate thermal management structures, thereby improving space utilization rate and energy density.
2Temperature
If flow channel size is increased to improve heat dissipation, then thermal management is enhanced, but space for active materials is reduced
Solution Approach 1:
The cooling channels are strategically positioned in specific local areas of the battery cell structure where heat generation is most intense. Rather than uniformly distributing cooling throughout the entire cell, the channels are localized to critical thermal zones, optimizing heat dissipation efficiency while minimizing the volume occupied by cooling structures and preserving space for active materials.
Solution Approach 2:
The patent optimizes the dimensional parameters of the cooling channels, including width, depth, and spacing, to achieve the best balance between heat dissipation performance and active material volume. By carefully adjusting these parameters, the system maximizes thermal management effectiveness while minimizing the space consumed by the cooling structure.
3Quantity of substance
If thermal management component is integrated into battery cell structure, then space utilization improves, but manufacturing complexity increases
Solution Approach 1:
The battery cell structure is segmented into distinct functional zones, with cooling channels integrated as separate but interconnected components. This segmentation allows for modular manufacturing where the cooling channel structure can be produced independently and then assembled with the electrochemical components, reducing overall manufacturing complexity while maintaining the integrated design benefits.
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 approach improves energy density and ensures effective thermal management, preventing thermal runaway and extending battery life while maintaining structural integrity and cost-effectiveness.
Implementation Method 1
a flow channel for accommodating a fluid to adjust a temperature of the battery cell
Data Source
AI summary
Provided are a battery, a power consumption device, and a method and a device for producing a battery. The battery includes: a plurality of battery cells arranged along a first direction; and a thermal management component extending along the first direction and being connected to a first wall of each battery cell of the plurality of battery cells, the first wall being a wall with the largest surface area of the battery cell; the thermal management component includes a flow channel for accommodating a fluid to adjust a temperature of the battery cell; a second direction is perpendicular to the first wall; where, a size of the flow channel in the second direction is W, and a capacity Q of the battery cell and the size W of the flow channel satisfy: 1.0 Ah/mm≤Q/W≤400 Ah/mm.