Battery Module Cooling Structure With Through-Hole Venting
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Solution Overview
Problem
Existing battery packs face reduced cooling efficiency due to the placement of cooling members on side surfaces, which limits heat dissipation from the upper and lower portions of battery cells, potentially leading to performance degradation and safety issues like fire or explosion.
Innovation Solution
A battery module and pack design featuring heat dissipation members with through holes positioned above and below the battery cells, allowing for efficient heat transfer and safe discharge of gases and flames in case of a fire, with metal plates connecting electrode terminals and heat dissipation members to enhance thermal management.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Temperature
If cooling members are installed on each side surface of cylindrical battery cells, then the battery pack can dissipate heat from side surfaces, but the inside space of the battery pack is reduced and cooling efficiency is reduced because heat is not sufficiently removed from upper/lower portions
Solution Approach 1:
The patent transitions from one-dimensional side-surface cooling to three-dimensional cooling by adding upper and lower heat dissipation members that contact the top and bottom surfaces of battery cells. This multi-directional heat dissipation approach efficiently removes heat from all surfaces of the cells while maintaining compact packaging, thereby resolving the contradiction between heat dissipation efficiency and inside space utilization.
2Reliability
If multiple cooling members are provided on side surfaces, then heat can be dissipated from sides, but cooling efficiency is reduced because upper/lower portions generate more heat and are not sufficiently cooled
Solution Approach 1:
The upper and lower heat dissipation members serve multiple functions: they act as cooling members that dissipate heat from the top and bottom surfaces of battery cells, and simultaneously serve as structural support members that maintain the battery pack configuration. This multi-functionality improves cooling efficiency without proportionally increasing device complexity.
3Productivity
If heat is not sufficiently removed from battery cells, then battery performance is degraded, but fire or explosion may be caused
Solution Approach 1:
The patent implements localized heat dissipation by providing heat dissipation members in direct thermal contact with the upper and lower surfaces of battery cells where heat is generated. This targeted local cooling ensures that hot spots are quickly addressed, preventing both performance degradation and thermal runaway conditions that could lead to fire or explosion.
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 design increases cooling efficiency, ensures safe operation by facilitating the discharge of gases and flames, and maintains stable battery performance by effectively managing heat generated during charge and discharge cycles.
Implementation Method 1
an upper frame (110) configured to transfer heat generated from a plurality of battery cells (132)
Implementation Method 2
a lower heat dissipation member (140) located under the battery cell assembly (130) and having a through hole at a position corresponding to an end portion of a positive electrode terminal of each battery cell
Data Source
AI summary
The present disclosure relates to a battery module and a battery pack including the same, and more particularly, to a battery module and a battery pack having the same, the battery module being formed in a heat transfer structure so that the temperatures of a plurality of battery cells are efficiently adjusted, and formed such that a heat transfer member is formed to have through holes so that the stability of the battery cells increases.