Battery Pack Venting Cover With Separation Protrusions
Find Innovative SolutionsGenerate Solutions
Solution Overview
Problem
Existing battery packs face issues with gas and heat spread between battery modules, leading to potential thermal damage and increased risk of additional events due to venting gas and high-temperature sparks.
Innovation Solution
A battery pack design featuring a venting cover with slits and separation protrusions to guide gas release, a separation plate to prevent heat transfer, and a venting channel with a valve plate to control gas flow, along with a discharge unit to safely expel gas outside, and an insulating unit to electrically isolate busbars.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Productivity
If battery modules are arranged closely to increase energy density, then productivity and space utilization are improved, but gas and heat spread between modules increases causing thermal damage risk
Solution Approach 1:
The battery pack is segmented into multiple independent modules separated by partition walls and cooling plates. Each module has its own venting channel and cooling flow path, preventing gas and heat from spreading between modules while maintaining high density arrangement
Solution Approach 2:
Cooling plates and partition walls are introduced as intermediary structures between battery modules. These intermediaries serve dual functions: structurally supporting the modules while thermally isolating them through cooling channels that prevent heat and gas propagation
2Reliability
If venting channels are provided to discharge gas quickly, then reliability is improved by preventing thermal damage, but device complexity increases due to additional flow path structures
Solution Approach 1:
The cooling plate serves multiple functions: it acts as a structural support between modules, provides thermal management through cooling channels, and functions as a venting pathway for gas discharge. This multi-functionality reduces the need for separate dedicated venting structures
Solution Approach 2:
The venting function is merged with the cooling plate structure. The cooling channels in the partition walls and plates serve dual purposes as both thermal management pathways and gas venting channels, simplifying the overall structure while maintaining safety
3Stability of the object's composition
If separation structures are added to prevent heat transfer, then thermal stability is improved, but manufacturing complexity increases due to additional components
Solution Approach 1:
The battery pack is divided into modular sections with partition walls and cooling plates that can be manufactured separately and assembled. This segmentation allows for standardized mass production of individual components while achieving thermal isolation in the final assembly
Solution Approach 2:
The partition walls and cooling plates utilize composite structures combining materials with different thermal properties. These composite structures provide effective thermal isolation while maintaining mechanical strength and can be manufactured using standard processes
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 prevents gas spread and reduces heat transfer between battery modules, enhancing thermal stability and safety by containing and directing gas release while maintaining electrical insulation.
Implementation Method 1
a venting cover coupled to the housing to cover the battery module and guiding the flow of gas released from the battery module
Implementation Method 2
a separation protrusion protruding from the bottom surface of the cover body to separate the plurality of battery modules so that gas movement between the plurality of battery modules is prevented
Implementation Method 3
a separation plate disposed between the plurality of battery modules to prevent heat transfer between the plurality of battery modules
Implementation Method 4
a valve plate disposed between the battery module and the venting channel, and capable of being ruptured open when the gas is released from the battery module
Implementation Method 5
A discharge unit provided to discharge the gas flowing from the venting channel to the outside of the housing may be formed in the housing
Implementation Method 6
an insulating unit surrounding a portion of the busbar to electrically insulate the busbar and the venting cover
Data Source
Figure 1
Figure 2
Figure 3
AI summary
The present disclosure relates to a battery pack and a battery device including the same. A battery pack according to an embodiment of the present disclosure may include a plurality of battery modules, a housing accommodating the plurality of battery modules, and a venting cover coupled to the housing to cover the battery module and guiding the flow of gas released from the battery module, wherein the venting cover may include a cover body having a plurality of slits formed therein for passage of gas released from the battery module, and a separation protrusion protruding from the bottom surface of the cover body to separate the plurality of battery modules so that gas movement between the plurality of battery modules is prevented.