Vehicle Battery Cooling Structure With Storage Chamber
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Solution Overview
Problem
Conventional vehicle battery cooling structures face challenges in efficiently managing abnormal heat and smoke emission due to limited heat capacity and poor heat exchange efficiency, particularly when the battery pack generates excessive heat.
Innovation Solution
A cooling structure that includes a battery module with a heat transfer sheet, a cooling water circulation pipe line, and a non-circulation cooling-water storage chamber disposed below the battery module, enhancing heat capacity and exchange efficiency by using a larger cooling water storage section and stagnant cooling water in a separate chamber to manage abnormal heat.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Reliability
If a conventional cooling water circulation pipe is used to cool the battery unit, then the battery can be cooled during normal operation, but the heat capacity is limited and heat exchange efficiency is poor when abnormal heat occurs
Solution Approach 1:
The invention adds a vertical dimension to the cooling system by placing a cooling water storage chamber below the battery module, in addition to the horizontal circulation pipe. This three-dimensional arrangement increases the total volume of cooling water available for heat absorption during abnormal conditions, thereby increasing heat capacity while maintaining the circulation cooling function.
Solution Approach 2:
The cooling system is divided into two functional segments: a circulation cooling path for normal operation and a storage chamber for abnormal heat conditions. The circulation pipe handles routine cooling, while the storage chamber provides additional heat capacity when needed, allowing each segment to be optimized for its specific function.
2Reliability
If a conventional cooling water circulation pipe is used to cool the battery unit, then the cooling system remains simple in structure, but heat exchange efficiency is poor when abnormal heat occurs
Solution Approach 1:
The invention merges the cooling water storage chamber with the circulation pipe system, where the circulation pipe is positioned to contact the storage chamber. This integration allows the storage chamber to serve dual purposes: storing cooling water for heat capacity and facilitating heat exchange when abnormal heat occurs, thereby improving heat exchange efficiency without significantly increasing structural 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 configuration effectively prevents adjacent battery cells from emitting smoke in an accelerated manner by increasing heat capacity and improving heat exchange efficiency, ensuring effective cooling of the vehicle battery.
Implementation Method 1
a cooling water circulation pipe line (14), which faces the lower surface of the battery module (33) with being in contact with the heat transfer sheet (34)
Implementation Method 2
a non-circulation cooling-water storage chamber (36) disposed below the battery module (33) while in contact with a lower surface of the cooling water circulation pipe line (14)
Data Source
AI summary
A cooling structure for a vehicle battery includes a battery module, a heat transfer sheet, a cooling water circulation pipe line, and a cooling-water storage chamber. In the battery module, battery cells are arranged in one direction. The heat transfer sheet is fixed to a lower surface of the battery module. The cooling water circulation pipe line faces the lower surface of the battery module with being in contact with the heat transfer sheet. The cooling-water storage chamber is of a non-circulation type and disposed below the battery module while in contact with a lower surface of the cooling water circulation pipe line.