Battery Pack Heat Dissipation Members and Cooling Fan Duct
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Solution Overview
Problem
Existing battery packs face challenges in efficiently dissipating heat generated within the module, which can lead to reduced performance and stability, particularly in high-capacity applications like hybrid electric vehicles.
Innovation Solution
The battery pack incorporates heat dissipation members extended from the inside to the outside of the module, combined with a duct and a cooling fan to enhance cooling efficiency through conduction and convection methods, respectively.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Temperature
If heat dissipation members are extended from inside to outside the module, then heat dissipation efficiency is improved, but device complexity increases
Solution Approach 1:
The heat dissipation members are nested within the module structure, with insertion plates positioned between unit cells and spacers, and extension plates extending outward. This nested configuration allows heat dissipation components to be integrated into the existing module architecture without requiring separate external cooling systems, thereby improving heat dissipation efficiency while minimizing additional structural complexity.
Solution Approach 2:
The heat dissipation members utilize both internal and external dimensions by extending from inside the module to the outside. The insertion plates operate within the internal space between unit cells and spacers, while extension plates protrude outward to increase surface area for heat dissipation. This dimensional transition maximizes heat dissipation efficiency without proportionally increasing overall device complexity.
2Temperature
If a duct and cooling fan are added to maximize cooling efficiency, then heat dissipation performance is improved, but device complexity increases
Solution Approach 1:
The duct and cooling fan are integrated with the heat dissipation members to form a unified cooling system. The duct receives heat dissipated from the extension plates, and the cooling fan facilitates airflow through the duct, creating a combined passive-active cooling system. This merging approach maximizes cooling efficiency while avoiding the need for completely separate cooling subsystems.
Solution Approach 2:
The duct acts as an intermediary component that bridges the heat dissipation members and the cooling fan. It collects heat from the extension plates and directs it toward the cooling fan for active dissipation, thereby efficiently coupling the passive heat dissipation function with the active cooling function without requiring direct contact between the heat sources and the fan.
3Temperature
If heat dissipation members are inserted through spacers and heat dissipation holes, then heat dissipation efficiency is improved, but manufacturing precision requirements increase
Solution Approach 1:
The heat dissipation members are segmented into distinct components: insertion plates that fit within the module interior, and extension plates that protrude outward. The insertion plates are designed to be inserted through pre-defined heat dissipation holes in the spacers and side plates. This segmentation allows for modular assembly, where each component can be manufactured and positioned separately, reducing the overall manufacturing precision requirements compared to creating a single integrated component.
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 configuration effectively maximizes heat dissipation performance, maintaining uniform temperature distributions and improving the stability of the battery pack by concurrently utilizing conduction-type and convection-type cooling methods.
Implementation Method 1
conduction-type heat dissipation by heat dissipation members extended from the inside to the outside of the module
Implementation Method 2
convection-type heat dissipation by a duct and a cooling fan
Data Source
AI summary
A battery pack is capable of maximizing or increasing a cooling effect of a module by concurrently performing conduction-type heat dissipation by a heat dissipation member extended from the inside to the outside of the module, and convection-type heat dissipation by a duct and a cooling fan. A battery pack includes: at least one module including a plurality of unit cells, a plurality of spacers between the unit cells, and a module case accommodating the unit cells and the spacers; a plurality of heat dissipation members inserted into the module and extended from the inside to the outside of the module; a duct including an opening and provided at one side of the module; and a cooling fan connected to the opening of the duct.