Efficient Cooling Design for Battery Modules in EVs
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Summary
Problems
Existing battery modules suffer from inefficient heat dissipation, leading to adverse effects on the normal operation of secondary batteries due to excessive heat production.
Innovation solutions
Incorporation of a cooling component directly attached to the secondary batteries, specifically positioned to intersect with heat-generating end faces and tabs, reducing cooling paths and enhancing heat dissipation efficiency.
TRIZ Analysis
Specific contradictions:
General conflict description:
Principle concept:
If a traditional heat dissipating structure is used in the battery module, then the structure is simple and easy to manufacture, but the heat dissipating efficiency deteriorates and heat cannot be quickly diffused
Why choose this principle:
The cooling component is divided into multiple cooling plates, each corresponding to different heat generation areas (electrode assembly end face and tab). This segmentation allows targeted cooling of different heat sources, improving overall heat dissipating efficiency while maintaining manageable structural complexity through modular design
Principle concept:
If a traditional heat dissipating structure is used in the battery module, then the structure is simple and easy to manufacture, but the heat dissipating efficiency deteriorates and heat cannot be quickly diffused
Why choose this principle:
The cooling structure transitions from traditional single-point or single-area cooling to multi-dimensional cooling by placing cooling plates at different locations (end face and tab areas) and using end plates to apply clamping force in the first direction, creating a three-dimensional cooling network that efficiently diffuses heat from multiple sources
Application Domain
Data Source
AI summary:
Incorporation of a cooling component directly attached to the secondary batteries, specifically positioned to intersect with heat-generating end faces and tabs, reducing cooling paths and enhancing heat dissipation efficiency.
Abstract
The embodiments of the present disclosure provide a battery module and a battery pack. A battery module includes: a cooling component; and a battery group, comprising two or more secondary batteries disposed side by side in a first direction, each secondary battery including a case having an accommodating hole, an electrode assembly disposed in the accommodating hole, and a cap assembly connected with the case in a sealed manner to seal the electrode assembly in the case, the electrode assembly including two end faces disposed opposite to each other in a second direction and an electrode tab extending from each end face, and the first direction intersecting the second direction; wherein the secondary batteries each includes two sides opposite to each other in the second direction, the cooling component is disposed on at least one of the two sides, the cooling component and the end face are respectively disposed on two sides of the case in the second direction, and the cooling component is connected and fixed to each of the secondary batteries. The battery module of this embodiment has good cooling performance, and the heat produced in the operating process can be quickly diffused to ensure a good operating condition. (Fig. 1)