Multi-Surface Battery Pack Cooling With Integrated Flow Paths
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Solution Overview
Problem
High-voltage battery packs require effective cooling to maintain driving stability, especially in electric vehicles where battery cells are stacked and connected in series and/or parallel.
Innovation Solution
A battery pack design that cools three surfaces of battery cells using a base plate with a refrigerant flow path and a frame portion with side surface flow paths, ensuring comprehensive cooling of the battery cells.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Power
If battery cells are stacked and connected in series and/or parallel to achieve high voltage, then power output and capacity are improved, but heat generation increases and cooling effectiveness deteriorates
Solution Approach 1:
The patent transitions from single-surface cooling to multi-surface cooling by adding side surface flow paths to the traditional bottom cooling structure. This dimensional expansion of the cooling surface area enables more effective heat dissipation from multiple faces of the battery cells, directly addressing the heat generation issue in high-voltage packs.
2Reliability
If traditional single-surface cooling is used, then device complexity is low, but cooling effectiveness is insufficient for high-voltage battery packs
Solution Approach 1:
The patent merges the cooling functions for different battery cell surfaces into a single integrated base plate structure. The base plate simultaneously provides bottom cooling through its lower surface and side cooling through integrated side surface flow paths, combining multiple cooling functions into one component and reducing overall system complexity.
Solution Approach 2:
The base plate is designed as a multi-functional component that performs both structural support and multi-surface cooling functions. It serves as the mounting structure for battery cells while simultaneously providing cooling pathways for the lower surfaces and side surfaces, making a single component perform multiple essential functions.
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 cooling design extends the usage lifespan and improves the durability of the battery pack by effectively managing temperature across multiple surfaces of the battery cells.
Implementation Method 1
the base flow path is configured to circulate a refrigerant to cool the battery cells
Implementation Method 2
the side surface flow path is a passage through which the refrigerant is configured to flow
Data Source
AI summary
A battery pack includes a base plate in which two or more battery cells are in contact with a first surface of the base plate and a base flow path through which a refrigerant that cools the battery cell circulates is in the base plate; and a frame portion in which a two or more frames are coupled to each other at an upper side of the first surface of the base plate to form an accommodation space for accommodating the battery cells and a side surface flow path through which the refrigerant flows in and out by being connected to the base flow path is formed therein.