Battery Module Heat Dissipation Plates With Integrated Coolant Paths
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Solution Overview
Problem
Conventional battery modules with multi-module structures face challenges in efficiently cooling secondary batteries, leading to heat accumulation, potential deterioration, and safety risks due to the need for separate cooling channels that reduce energy density.
Innovation Solution
A battery module design featuring heat dissipation plates with recessed inlet and outlet portions and a coolant moving portion that allows coolant to flow around and between secondary batteries, enhancing cooling efficiency without requiring a separate coolant space, along with a bus bar assembly and end cover for electrical connectivity and coolant management.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Temperature
If separate cooling channels are formed between cartridges by maintaining predetermined distances, then cooling performance is improved, but energy density per volume is significantly lowered
Solution Approach 1:
The patent merges the cooling channel function with the space between battery cartridges by forming the cooling channel directly within the battery module structure. The cooling channel is integrated into the module housing or support structures, allowing coolant flow without requiring separate dedicated cooling components or additional spacing between batteries. This integration maintains high energy density while achieving effective cooling.
Solution Approach 2:
The patent makes the battery module structure serve multiple functions: structural support, heat dissipation, and coolant flow path provision. The module housing or support plates are designed to simultaneously provide mechanical support and form cooling channels, eliminating the need for separate cooling components and maximizing space utilization for energy storage.
2Quantity of substance
If batteries are densely packed in narrow space to increase energy density, then energy density is improved, but heat dissipation becomes difficult
Solution Approach 1:
The patent introduces cooling channels as intermediary structures that facilitate heat removal from densely packed batteries. These channels provide a dedicated pathway for coolant to circulate between or around battery cartridges, enabling efficient heat extraction without requiring increased spacing between batteries. The cooling channels act as mediators that resolve the conflict between dense packing and heat dissipation.
Solution Approach 2:
The patent employs hydraulic cooling by circulating liquid coolant through integrated cooling channels. The coolant absorbs heat from the batteries as it flows through the channels, providing continuous passive or active cooling. This hydraulic approach enables effective heat removal from densely packed batteries without compromising energy density.
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 effectively cools secondary batteries, improves cooling efficiency, reduces manufacturing costs by omitting welding processes, and prevents battery movement and internal damage, while maintaining high energy density.
Implementation Method 1
a plurality of heat dissipation plates interposed between the plurality of secondary batteries... the heat dissipation plates have a coolant moving portion at which a moving space is formed so that the coolant moves to a front end, an upper end, a lower end and a rear end of the secondary batteries
Data Source
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AI summary
Disclosed is a battery module capable of cooling a plurality of secondary batteries accommodated therein more efficiently. The battery module includes a cell assembly having a plurality of secondary batteries and a plurality of heat dissipation plates interposed between the plurality of secondary batteries, wherein at least a portion of a front end and a rear end of the heat dissipation plates is recessed to form an inlet portion and an outlet portion so that a coolant is introduced from the outside or discharged to the outside, and the heat dissipation plates have a coolant moving portion at which a moving space is formed so that the coolant moves to a front end, an upper end, a lower end and a rear end of the secondary batteries; a bus bar assembly having a plurality of bus bars electrically connected to electrode leads respectively provided at the plurality of secondary batteries and a bus bar frame having insert holes into which the electrode leads of the secondary batteries are inserted; an end cover having a vent hole communicating with the coolant moving portion so that the coolant is introduced from the outside or discharged to the outside; and a plurality of side plates.