Battery Module Cooling Plate With Heat Transfer Tape
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Solution Overview
Problem
Existing battery modules face challenges in efficiently cooling battery cells, leading to heat accumulation, potential deterioration, and safety risks such as ignition or explosion, particularly due to the use of cooling pins which increase material and process costs and can result in irregular heat transfer and separation issues.
Innovation Solution
A battery module design that uses a heat transfer tape with good thermal conductivity to adhere battery cells to a cooling plate, eliminating the need for cooling pins, and incorporates a buffering portion to protect cells from external impacts and swelling, while minimizing weight and manufacturing complexity.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Temperature
If cooling pins are used to cool battery cells, then heat dissipation is achieved, but material cost and process cost increase
Solution Approach 1:
The patent removes the cooling pins from the battery module structure entirely, extracting the problematic component that caused increased material and process costs. Instead, it uses the natural thermal conduction through the battery cell casing to a cooling plate, eliminating the need for additional cooling pin components and their associated installation processes.
Solution Approach 2:
The battery cell casing itself serves as the heat transfer component, utilizing its inherent thermal conductivity properties. The casing naturally conducts heat from the internal electrodes to the external cooling plate without requiring separate cooling pins, making the system self-sufficient and reducing manufacturing complexity.
2Temperature
If cooling pins are used to cool battery cells, then heat dissipation is achieved, but contact surface irregularity and separation occur
Solution Approach 1:
The patent removes the cooling pins that created contact surface problems, eliminating the source of irregularity and separation issues. By using the flat battery cell casing as the heat transfer surface instead, it ensures uniform and stable thermal contact with the cooling plate throughout the battery module's operational life.
Solution Approach 2:
The battery cell casing serves multiple functions: it contains the internal electrode structure and simultaneously acts as the heat transfer surface to the cooling plate. This multi-functionality eliminates the need for separate cooling pins and ensures reliable thermal contact through the casing's inherent structural integrity.
3Quantity of substance
If battery cells are densely packed in narrow space, then large capacity is achieved, but heat accumulation occurs
Solution Approach 1:
The patent divides the cooling function into multiple independent cooling plates, each serving specific battery cells. This segmentation allows efficient heat dissipation from each cell group while maintaining high cell density within the narrow space, preventing heat accumulation through distributed thermal management.
Solution Approach 2:
The cooling plate acts as an intermediary thermal management component between the densely packed battery cells and the external environment. It provides a dedicated heat dissipation pathway that enables high cell density while preventing heat accumulation through efficient thermal conduction to the cooling plate.
4Temperature
If heat transfer material is applied to adhere battery cells and cooling pins, then heat transfer is improved, but material cost increases and uniform application is difficult
Solution Approach 1:
The patent removes the separate heat transfer material layer that caused application difficulties and cost increases. By using the battery cell casing itself as the heat transfer surface, it achieves efficient thermal conduction without requiring additional materials, eliminating uniformity issues and reducing material costs.
Solution Approach 2:
The battery cell casing inherently provides the heat transfer function that previously required separate heat transfer materials. The casing's own thermal properties are sufficient for efficient heat conduction to the cooling plate, making additional heat transfer materials unnecessary and reducing manufacturing complexity.
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 enhances cooling efficiency, protects battery cells from external impacts and swelling, reduces material costs, and simplifies the manufacturing process by using a heat transfer tape for effective heat transfer and cell adhesion.
Implementation Method 1
a heat transfer tape with good thermal conductivity to adhere battery cells to a cooling plate... heat transfer tape for effective heat transfer
Data Source
AI summary
Disclosed is a battery module, as well as a battery pack and a vehicle comprising the same. The battery module includes a plurality of battery cells arranged side by side to face each other in at least one direction, a cooling plate located below the plurality of battery cells, and a heat transfer tape adhered to the battery cells to transfer heat of the battery cells to the cooling plate.