Battery Cell Cooling Channel Layout for Higher Pack Energy Density
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Solution Overview
Problem
Existing battery technologies face challenges in improving energy density while ensuring effective thermal management, which is crucial for safety and performance.
Innovation Solution
A thermal management component is connected to the largest surface area of each battery cell, with a flow channel that satisfies the ratio 1.0Ah/mm ≤ Q/W ≤ 400Ah/mm, allowing for efficient thermal management and space utilization, eliminating the need for additional structures in the battery box.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Temperature
If traditional thermal management structures (beams and support components) are added to the battery box, then thermal management capability is improved, but space utilization rate decreases and energy density is reduced
Solution Approach 1:
The patent combines the thermal management function with the existing battery box structure by integrating flow channels directly into the box body. This merging eliminates the need for separate beams and support components, thereby maintaining thermal management capability while improving space utilization rate and energy density.
Solution Approach 2:
The battery box is designed to serve multiple functions: it provides structural support, contains battery modules, and incorporates thermal management flow channels. This multi-functionality reduces the need for additional dedicated thermal management structures, thus improving space utilization without compromising thermal management performance.
2Temperature
If flow channel size is increased to improve thermal management, then thermal dissipation capability is improved, but space for battery cells is reduced
Solution Approach 1:
The patent optimizes the flow channel dimensions (width W and height H) to achieve a balance between thermal dissipation capability and battery cell capacity. By carefully controlling the parameters W and H within specific ranges, the system maintains effective thermal management while maximizing the space available for battery cells.
Solution Approach 2:
The flow channels are strategically positioned and dimensioned to provide targeted thermal management where needed. The local optimization of channel size and placement ensures adequate cooling performance without unnecessarily reducing the overall battery cell capacity.
3Temperature
If thermal management components are added to each battery cell, then thermal management effectiveness is improved, but device complexity increases
Solution Approach 1:
The patent integrates thermal management flow channels directly into the battery box structure rather than adding separate components to each battery cell. This merging approach provides effective thermal management while significantly reducing device complexity and the number of parts required.
Solution Approach 2:
The battery box itself serves as the thermal management structure, eliminating the need for additional dedicated thermal management components. The box's own structure is utilized to provide cooling, thereby reducing overall system 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 approach enhances energy density by optimizing space utilization and ensures effective thermal management, preventing thermal diffusion and maintaining structural integrity.
Implementation Method 1
a flow channel for accommodating a fluid to adjust a temperature of the battery cell
Implementation Method 2
a flow channel for accommodating a fluid to adjust a temperature of the battery cell
Data Source
Figure 1~2
Figure 3
Figure 4~5
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: 1.5Ah/mm≤Q/W≤400Ah/mm. A technical solution of an embodiment of the present application improves the thermal management of the battery while ensuring the structural strength of the battery, thereby improving performances of the battery.