Battery cell cooling

By introducing U-shaped flexible hose connectors and vertical connectors into the battery pack flow path design, the problems of space occupation of hot cooling channels and low coolant delivery efficiency are solved, achieving more efficient cooling effect and improved battery pack energy density.

CN122158786APending Publication Date: 2026-06-05GM GLOBAL TECHNOLOGY OPERATIONS LLC
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Patent Information

Authority / Receiving Office
CN · China
Patent Type
Applications(China)
Current Assignee / Owner
GM GLOBAL TECHNOLOGY OPERATIONS LLC
Filing Date
2024-12-05
Publication Date
2026-06-05

AI Technical Summary

Technical Problem

In existing battery pack cooling systems, the space occupied by the hot cooling channels leads to a decrease in the overall energy density of the battery pack, and the coolant delivery efficiency is not high.

Method used

A multi-functional integrated structural support beam is adopted, which combines U-shaped hose connectors and vertical connectors. The flow path of the U-shaped hose connectors and vertical connectors is designed so that the flow path can bypass the transverse structural members through the U-shaped hose connectors, thereby reducing the cross-sectional area of ​​the flow path and introducing turbulence characteristics to improve the flow efficiency of coolant.

Benefits of technology

It improves the flow efficiency of coolant within the battery pack, reduces bubble formation, enhances the cooling effect, and increases the energy density of the battery pack.

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Abstract

A cooling system for a rechargeable battery pack comprising: a plurality of thermal cooling channels adapted to be positioned between individual battery cells of adjacent rows of the battery pack; an inlet flow channel in fluid communication with each of the plurality of thermal cooling channels and adapted to be connected to a coolant supply and provide a flow path between the coolant supply and each of the plurality of thermal cooling channels; and an outlet flow channel in fluid communication with each of the plurality of thermal cooling channels and adapted to provide a flow path for coolant exiting each of the plurality of thermal cooling channels; the inlet flow channel comprising at least one U-shaped hose connector adapted to bypass the structural cross members of the battery pack.
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