Battery Module Multi-Sided Cooling Design
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Solution Overview
Problem
Existing battery modules face challenges in uniformly cooling battery stacks due to single-sided cooling methods, which can lead to temperature imbalances and module upsizing when attempting to address these imbalances.
Innovation Solution
A battery module design featuring a first heat radiator facing one surface of the battery stack and a second heat radiator facing a surface intersecting with the first, with a positional relationship where the center of the first heat transfer component is further from the second heat radiator than the center of the battery stack, utilizing both a seat as a first heat radiator and a cooling unit as a second heat radiator to facilitate uniform cooling without upsizing.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Device complexity
If a cooling plate is in contact with one side of the battery stack, then the structure is simple, but the cooling uniformity deteriorates
Solution Approach 1:
The patent transitions from single-sided cooling to multi-sided cooling by adding cooling plates on multiple surfaces of the battery stack. This dimensional expansion of the cooling approach enables uniform heat dissipation across the entire battery stack without requiring overly complex cooling mechanisms, thereby resolving the contradiction between structural simplicity and cooling uniformity.
Solution Approach 2:
The cooling system is segmented into multiple independent cooling plates that contact different surfaces of the battery stack. Each cooling plate independently manages heat from its contact surface, and together they achieve comprehensive uniform cooling. This segmentation allows the system to maintain relative simplicity while improving cooling uniformity.
2Temperature
If a cooling plate is in contact with multiple surfaces of the battery stack, then the cooling uniformity improves, but the module size increases
Solution Approach 1:
The patent merges the cooling plates with the battery pack structure itself, making the cooling system an integrated part of the overall module. The cooling plates are positioned to contact the battery stack directly and are structurally combined with the pack housing, eliminating the need for separate external cooling components. This merging achieves uniform multi-sided cooling while preventing module upsizing.
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 configuration ensures more uniform cooling of the battery stack while preventing module upsizing, reducing temperature imbalances and enhancing reliability and assembly ease.
Implementation Method 1
a first heat transfer component that is in contact with the first heat radiator and the first surface to transfer heat from the battery stack to the first heat radiator
Implementation Method 2
The second heat radiator is thermally connected to the second surface directly or through a second heat transfer component
Data Source
AI summary
A battery module includes a battery stack having a plurality of stacked batteries, a first heat radiator facing first surface of battery stack, a first heat transfer component that is in contact with the first heat radiator and first surface to transfer heat from the battery stack to the first heat radiator, and a second heat radiator facing a second surface of the battery stack. The second surface extends in a direction intersecting with the first surface. The second heat radiator is thermally connected to the second surface directly or through the second heat transfer component. A positional relationship between the first heat transfer component and the battery stack is formed such that the center of the first heat transfer component (84) is more away from the second heat radiator than the center of the battery stack is in a direction along the first surface.