Battery Cooling Plate Assembly With Side-and-Bottom Module Cooling
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Solution Overview
Problem
The limited layout space in vehicles reduces heat dissipation space between battery cells, necessitating an efficient liquid cooling system to maintain battery temperature within an appropriate range and ensure safety and service life.
Innovation Solution
A battery cooling structure with a first cooling plate and multiple second cooling plates, where each battery module is sandwiched between two second cooling plates, and the top and bottom surfaces are cooled by the first cooling plate, with a coolant system that includes inlet and outlet pipes and weak sections for rapid coolant release during thermal runaway.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Quantity of substance
If the gaps between battery cells are reduced to increase energy density, then the energy density of individual batteries is improved, but the heat dissipation space decreases
Solution Approach 1:
The patent transitions from traditional single-plane cooling to three-dimensional multi-directional cooling by arranging cooling plates vertically and horizontally around battery modules. The first cooling plate is positioned at the bottom while second cooling plates are positioned at the sides, creating spatial separation between battery modules and enabling cooling from multiple dimensions simultaneously.
Solution Approach 2:
The cooling system is divided into multiple independent cooling plates (first cooling plate and multiple second cooling plates) that can be separately positioned and controlled. Each cooling plate has independent coolant channels, allowing segmented cooling zones that can be optimized for different thermal conditions in various parts of the battery pack.
2Reliability
If traditional cooling systems are used without module separation, then the structure is simpler, but thermal runaway cannot be effectively controlled
Solution Approach 1:
Battery modules are physically separated by independently positioned second cooling plates, creating isolated thermal zones. This segmentation prevents thermal runaway propagation between adjacent modules while maintaining a relatively simple overall cooling structure with standardized cooling plate components.
3Productivity
If cooling plates are positioned to maximize cooling coverage, then cooling efficiency is improved, but the layout space utilization becomes more complex
Solution Approach 1:
The cooling plates utilize vertical and horizontal spatial dimensions to achieve comprehensive cooling coverage. Second cooling plates are positioned vertically at the sides of battery modules while the first cooling plate is positioned horizontally at the bottom, creating a three-dimensional cooling network that maximizes heat dissipation surface area without requiring excessive lateral space.
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
Enhances cooling efficiency and effectively controls thermal runaway, improving safety performance by separating battery modules and ensuring rapid cooling through the coolant's spray mechanism.
Implementation Method 1
independent coolant channels are respectively provided inside the first cooling plate and the second cooling plates
Implementation Method 2
external coolant can enter the first cooling plate from the coolant inlet and then flow out from the coolant outlet after flowing through the coolant channel
Implementation Method 3
when the weak section is heated and melted, the external coolant can be sprayed out from the weak section on the coolant pipeline to cool down the battery module
Implementation Method 4
the external coolant can be sprayed out from the weak section on the coolant pipeline to cool down the battery module
Data Source
AI summary
Provided is a battery cooling structure, including a cooling plate assembly and battery modules. The cooling plate assembly includes a horizontally-arranged first cooling plate and multiple vertically-arranged second cooling plates, the multiple second cooling plates being sequentially arranged at intervals in the horizontal direction. Independent coolant channels are provided in the first cooling plate and the second cooling plates. The first cooling plate is at least located on one side of the second cooling plates in the vertical direction, battery modules being located between every two adjacent second cooling plates. Two opposite side surfaces of each battery module are respectively cooled by the two second cooling plates adjacent thereto, and the top surface and/or the bottom surface of each battery module is cooled by the first cooling plate. Also provided are a battery pack and an electric vehicle.