Battery Module Resin Cooling Layout for Uniform Cell Stack Temperature
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Solution Overview
Problem
Conventional battery modules suffer from inefficient cooling, particularly at the upper surfaces of battery cell stacks, leading to localized temperature differences and early output limitations due to heat buildup.
Innovation Solution
A battery module design featuring a first thermal conductive resin layer injected between the upper surface of the battery cell stack and the module frame, with penetrating parts and injecting parts to facilitate even heat distribution, complemented by a second resin layer on the bottom surface for comprehensive cooling.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Temperature
If a thermal conductive resin layer is formed only at the lower surface of the battery cell stack, then the lower part of the battery cell stack can be cooled effectively, but the upper part of the battery cell stack experiences insufficient cooling and localized temperature rise
Solution Approach 1:
The thermal management system is segmented into two distinct thermal conductive resin layers: one at the lower surface and another at the upper surface of the battery cell stack. This segmentation allows heat to be dissipated from both the upper and lower portions of the battery cells, addressing the temperature uniformity issue while maintaining effective cooling.
Solution Approach 2:
The cooling approach transitions from a single-dimensional (lower surface only) thermal conduction to a two-dimensional approach by adding thermal conductive resin layers at both the upper and lower surfaces of the battery cell stack. This dimensional expansion enables comprehensive heat dissipation across the entire battery stack, eliminating localized temperature rises.
2Weight of moving object
If the battery module uses a compact design with high integration, then the size and weight are reduced, but the cooling performance and heat dissipation capability are compromised
Solution Approach 1:
Thermal conductive resin layers are strategically applied at specific locations (upper and lower surfaces of the battery cell stack) where heat generation and accumulation are most significant. This localized thermal management approach ensures effective heat dissipation from critical areas without requiring a complete redesign of the entire battery module structure, thus maintaining the compact high-integration design while improving cooling performance.
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 enhances cooling performance by evenly distributing heat across the upper and lower surfaces of the battery cell stack, preventing localized temperature rises and maintaining optimal battery output.
Implementation Method 1
a first thermal conductive resin layer 600 that is located between an upper surface of the battery cell stack 120 and an upper part of the module frame 300
Data Source
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AI summary
A battery module according to an embodiment of the present disclosure includes: a battery cell stack in which a plurality of battery cells are stacked; a module frame that houses the battery cell stack and has an opened front surface and an opened rear surface; a busbar frame that is located on the front and rear surfaces of the battery cell stack; and a first thermal conductive resin layer that is located between the upper surface of the battery cell stack and the upper part of the module frame, wherein an injecting part is formed on the upper part of the module frame, and the first thermal conductive resin layer is formed by injecting a thermal conductive resin from the injecting part toward the battery cell stack.