Battery Module Bottom Venting Top Cooling Design
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Solution Overview
Problem
Existing technologies have not effectively addressed the need for a module structure optimized for bottom venting and top cooling in battery modules, limiting their application in vehicles requiring such configurations.
Innovation Solution
A battery module design that includes a heat dissipation layer on the top side and a busbar frame on the bottom side, with discharge holes for downward venting of sparks or flames, and a mono or dual frame structure to accommodate the battery cell assembly, allowing for both bottom venting and top cooling configurations.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Adaptability or versatility
If a conventional top venting and bottom cooling battery module structure is used, then the module structure is suitable for top venting and bottom cooling configuration, but it cannot be applied to vehicles requiring bottom venting structure
Solution Approach 1:
The patent inverts the conventional battery module structure by positioning the vent hole at the bottom of the lower frame instead of at the top, and placing the heat dissipation layer at the top side of the battery cell assembly. This inversion enables bottom venting functionality while maintaining top cooling capability, allowing the module to meet vehicle safety requirements for bottom venting without increasing structural complexity
Solution Approach 2:
The battery module structure is designed with multi-functional components: the lower frame serves both as a structural support and as a venting pathway through the bottom vent hole; the heat dissipation layer provides thermal management; the sealing portion ensures both electrical isolation and environmental protection. This multi-functionality enables a single module design to satisfy both top cooling and bottom venting requirements simultaneously
2Reliability
If vent holes are formed at the upper part for top venting, then flames and sparks can vent upwards, but it cannot provide bottom venting capability required by certain vehicles
Solution Approach 1:
The patent reverses the conventional venting direction by forming the vent hole at the bottom surface of the lower frame instead of at the top. This allows flames and sparks to vent downward through the bottom vent hole, satisfying vehicle safety requirements for bottom venting while maintaining effective venting functionality
Solution Approach 2:
The patent implements localized venting functionality by providing a dedicated bottom vent hole in the lower frame at specific locations where venting is required. The sealing portions are strategically placed at specific sides of the battery cell to ensure proper sealing while allowing venting at designated bottom locations, achieving both safety and adaptability
3Temperature
If the heat dissipation layer is disposed at the bottom side, then it can provide bottom cooling, but it cannot provide top cooling required by certain applications
Solution Approach 1:
The patent inverts the conventional heat dissipation layer positioning by placing it at the top side of the battery cell assembly instead of at the bottom. This enables top cooling functionality while the bottom vent hole in the lower frame provides bottom venting, creating a configuration that meets both top cooling and bottom venting requirements simultaneously
Solution Approach 2:
The heat dissipation layer is applied locally at the top side of the battery cell assembly where thermal management is required. This localized approach enables effective top cooling while maintaining structural simplicity and allowing the bottom frame to handle venting functions independently
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
Enables efficient heat dissipation and safe discharge of gases or flames in the downward direction, enhancing safety and applicability to vehicles with bottom venting requirements.
Implementation Method 1
a heat dissipation layer disposed on a top side of the battery cell assembly
Implementation Method 2
a discharge hole may be formed in a lower surface of the mono frame
Data Source
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AI summary
The present disclosure relates to a battery module and a battery pack comprising the same, and more particularly, to a battery module that may be applied to types of vehicles that need batteries capable of bottom venting and top cooling and a battery pack comprising the same. The battery module according to the present disclosure includes a battery cell assembly formed by stacking a plurality of battery cells, a heat dissipation layer disposed on a top side of the battery cell assembly and a busbar frame covering a first side where a lead of the battery cell assembly protrudes and a bottom side of the battery cell assembly.