Battery Pack Case Flow Path for Gas Venting Between Modules
Find Innovative SolutionsGenerate Solutions
Solution Overview
Problem
Existing battery packs face issues with gas and heat generated from battery modules causing damage and spreading to adjacent modules, leading to potential explosions or further damage.
Innovation Solution
A battery pack case design featuring a base plate, side plate, cover plate, partition plate, and top plate with a flow path structure that includes a first plate with holes and a second plate with a lower melting point to manage and discharge gas and heat effectively.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Reliability
If battery modules are accommodated in a battery pack without a flow path structure, then the battery pack structure is simple, but gas and heat generated from battery modules cannot be effectively discharged, causing damage and potential explosion
Solution Approach 1:
The battery pack case is segmented into multiple functional components: base plate, side plates, cover plates, and partition plates. The partition plates divide the accommodation space into multiple independent spaces, preventing gas propagation between battery modules. This segmentation approach enhances safety by isolating potential failure zones while maintaining a relatively simple overall structure.
Solution Approach 2:
A flow path structure is introduced as an intermediary element between the battery modules and the external environment. This flow path includes inlet and outlet ports connected through the cover plate and partition plate structures, serving as a mediator to channel and discharge gas and heat away from the battery modules, thus preventing pressure buildup and potential explosion.
2Object-affected harmful factors
If partition plates are added to divide accommodation space into multiple spaces, then gas propagation between modules is prevented, but the device complexity increases
Solution Approach 1:
The partition plates serve multiple functions simultaneously: they divide the accommodation space into independent compartments to prevent gas propagation, provides structural support for the battery pack, and integrate with the flow path structure to guide gas discharge. This multi-functionality reduces the need for additional separate components, thereby limiting the increase in device complexity.
Solution Approach 2:
The partition plates are merged with the flow path structure, where the partition plates themselves form part of the gas discharge pathway. The inlet and outlet ports are integrated into the cover plate and partition plate assemblies, combining the partitioning function with the gas discharge function in a unified structural design.
3Reliability
If a flow path structure with inlet and outlet ports is implemented, then gas and heat discharge is improved, but the manufacturing complexity increases
Solution Approach 1:
The flow path structure utilizes parameter changes in the form of inlet and outlet ports with specific dimensions and positions. The ports are designed with optimized sizes and locations to enable effective gas and heat discharge while maintaining compatibility with standard manufacturing processes. The parameters of the flow path (port sizes, positions, shapes) are carefully selected to achieve the desired discharge capability without requiring complex manufacturing techniques.
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
The design effectively cools and discharges gas and heat through a flow path structure, preventing explosion and damage to the battery pack and adjacent modules.
Implementation Method 1
a second plate connected to an upper side of the first plate and having a melting point lower than that of the first plate
Data Source
AI summary
A battery pack case according to an embodiment of the present disclosure includes: a base plate, a side plate disposed along a circumference of the base plate and having a lower side connected to the base plate, a cover plate covering an upper side of the side plate and define an accommodation space above the base plate, a partition plate disposed in the accommodation space to partition the accommodation space into a plurality of spaces, and a top plate forming a flow path together with the cover plate and disposed above the cover plate.