Pouch Battery Module Cooling Plate With Adhesive-Bonded Cell Support
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Solution Overview
Problem
Existing battery modules, particularly those using pouch-type secondary batteries, face challenges with mechanical stiffness, assembly complexity, increased volume and weight due to cartridges and fastening components, and inefficient cooling, which can lead to temperature-related performance issues and safety risks, especially in large-scale applications like automotive battery packs.
Innovation Solution
A battery module configuration where pouch-type secondary batteries are directly attached to a thermally conductive cooling plate with a simplified structure, eliminating the need for cartridges and fastening components, and utilizing thermally conductive adhesives and protrusions to enhance heat transfer and stability, thereby improving cooling efficiency and reducing weight and size.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Weight of moving object
If pouch-type secondary batteries are used in a battery module, then light weight and ease of stacking are achieved, but mechanical stiffness is insufficient and additional cartridges are needed
Solution Approach 1:
The patent combines the cooling function and structural support function into a single cooling plate component. The cooling plate not only dissipates heat from the battery cells but also provides mechanical stiffness and structural support, eliminating the need for separate cartridges and fastening components while maintaining both weight reduction and structural integrity.
2Strength
If cartridges and fastening components are added to pouch-type batteries, then mechanical strength and stability are improved, but device complexity and assembly difficulty increase
Solution Approach 1:
The cooling plate integrates multiple functions including structural support, thermal management, and battery cell positioning. By combining these functions into a single component, the patent eliminates the need for separate cartridges and fastening mechanisms, thereby reducing assembly complexity while maintaining structural stability.
Solution Approach 2:
The cooling plate serves multiple purposes: it provides mechanical support and stiffness, dissipates heat from battery cells, and maintains positional stability of battery components. This multi-functional design reduces the overall number of components needed in the battery module.
3Reliability
If cartridges are used to protect secondary batteries, then impact resistance is improved, but volume and weight of the battery module increase
Solution Approach 1:
The cooling plate is designed to provide both thermal management and mechanical protection functions. By integrating the protective function into the cooling plate structure itself, the patent eliminates the need for additional protective cartridges, thereby reducing overall volume and weight while maintaining impact resistance.
4Stability of the object's composition
If fastening components are used to fix batteries to cartridges, then structural stability is improved, but manufacturing cost and assembly workability deteriorate
Solution Approach 1:
The cooling plate integrates the fastening and positioning functions directly into its structure. Battery cells are fixed to the cooling plate through adhesive application to the cooling plate's surface, eliminating the need for separate fastening components and simplifying the assembly process while maintaining structural stability.
5Quantity of substance
If a large number of pouch-type secondary batteries are stacked, then capacity and output are improved, but heat accumulation increases and cooling efficiency decreases
Solution Approach 1:
The cooling plate acts as an intermediary thermal management component between the battery cells. It provides a thermally conductive path for heat dissipation from the battery cells, using adhesive layers with specific thermal conductivity properties to efficiently transfer heat away from the stacked batteries, thereby managing heat accumulation in high-capacity configurations.
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 enhances heat dissipation efficiency, simplifies assembly, reduces weight and volume, and improves impact resistance, while maintaining a stable and efficient cooling capability, thus addressing the limitations of existing battery module designs.
Implementation Method 1
a cooling plate including a thermally conductive material, arranged under the plurality of pouch-type secondary batteries
Implementation Method 2
a lower portion of each of the secondary batteries is attached to an upper surface of the cooling plate via an adhesive
Data Source
AI summary
Discussed is a battery module including a plurality of pouch-type secondary batteries arranged in parallel to each other, each pouch type secondary battery comprising an electrode assembly, a receiving portion configured to receive the electrode assembly and a pouch exterior, a cooling plate arranged under the plurality of pouch-type secondary batteries to accommodate the plurality of pouch-type secondary batteries, and a thermally conductive adhesive between the plurality of pouch-type secondary batteries and the cooling plate. The cooling plate includes a first recess to receive a portion of the pouch exterior and a second recess to receive a portion of the thermally conductive adhesive.