Pouch Battery Module Assembly With Cooling Plate 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 mechanical stability.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Weight of moving object
If pouch-type secondary batteries are used in a battery module, then ease of stacking and light weight are achieved, but mechanical stiffness is insufficient and batteries cannot maintain stacked state by themselves
Solution Approach 1:
The patent merges the cooling function with the structural support function by integrating cooling plates directly into the battery module structure. The cooling plates serve dual purposes: dissipating heat from batteries and providing mechanical support to maintain the stacked configuration of pouch-type batteries, thereby eliminating the need for separate cartridges while improving both cooling efficiency and structural strength.
2Stability of the object's composition
If cartridges and fastening components are added to maintain battery stacking, then mechanical stability is improved, but device complexity and assembly difficulty increase
Solution Approach 1:
The cooling plates are designed to perform multiple functions simultaneously: thermal management by conducting heat away from batteries, structural support by maintaining the stacked configuration, and mechanical stabilization. This multi-functionality eliminates the need for separate cartridges and fastening components, thereby reducing device complexity while improving stacking stability.
3Reliability
If cartridges are used to protect batteries from external impact, then reliability is improved, but volume and weight of the battery module increase
Solution Approach 1:
The patent combines the protective function with the cooling function by designing the cooling plates to serve as structural support elements. The cooling plates provide mechanical strength to protect pouch-type batteries from external impacts while maintaining compact dimensions, thereby achieving impact protection without significantly increasing module volume or weight.
4Strength
If fastening components are added to fix batteries to cartridges, then mechanical stability is improved, but manufacturing cost and assembly complexity increase
Solution Approach 1:
The cooling plates are designed to provide both thermal management and mechanical fixation functions. By integrating the fixation function into the cooling plate structure, the patent eliminates the need for separate fastening components, thereby simplifying the manufacturing process and assembly operations while maintaining adequate fixing strength for battery stabilization.
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 improves heat dissipation efficiency, reduces the module's size and weight, simplifies assembly, and enhances impact resistance while maintaining stable performance and safety by directly attaching batteries to a thermally conductive cooling plate, thereby addressing the inefficiencies and safety concerns of traditional designs.
Implementation Method 1
a cooling plate including a thermally conductive material, arranged under the plurality of pouch-type secondary batteries while lying in a horizontal direction
Implementation Method 2
a plurality of pouch-type secondary batteries, which each include an electrode assembly, an electrolyte, and a pouch exterior and are arranged in a left-and-right direction while standing in an up-and-down direction; and a cooling plate including a thermally conductive material
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.