Cylindrical Battery Module Cooling Plates for Thermal Runaway Blocking
Find Innovative SolutionsGenerate Solutions
Solution Overview
Problem
Conventional battery modules with heat-conductive frames and cooling devices face inefficiencies in heat dissipation due to the cooling device's placement, requiring high cooling capacity and being unable to effectively dissipate heat from both surfaces, leading to potential thermal runaway and battery degradation.
Innovation Solution
A battery module design featuring a plurality of cylindrical batteries with flush bottom surfaces, connected in an axial direction, and L-shaped cooling plates with heat-absorption and heat-dissipation plate portions, where the cooling plates are thermally coupled to the batteries and have a duct gap between adjoining blocks to prevent thermal runaway and ensure efficient cooling.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Temperature
If a single cooling device is placed on both surfaces of heat-conductive frames to cool cylindrical batteries, then the cooling device can cool both surfaces, but the cooling device cannot dissipate heat at its surfaces and requires great cooling capacity
Solution Approach 1:
The invention divides the cooling system into multiple separate cooling devices, with each cooling device assigned to cool only one surface of the heat-conductive frames. This segmentation allows each cooling device to have its own heat-dissipation surfaces exposed to the environment, enabling effective heat dissipation while maintaining efficient battery cooling through the heat-conductive frames.
2Temperature
If a single cooling device is placed on both surfaces of heat-conductive frames, then both surfaces can be cooled, but the cooling device cannot dissipate heat at its surfaces
Solution Approach 1:
The cooling system is segmented into multiple independent cooling devices, each responsible for one surface of the heat-conductive frames. This segmentation simplifies the configuration of each individual cooling device, allowing each to have exposed heat-dissipation surfaces for effective heat dissipation, while collectively achieving comprehensive battery cooling.
3Volume of stationary object
If cylindrical batteries are arranged with adjoining blocks close together, then space is optimized, but thermal runaway can spread between blocks
Solution Approach 1:
The invention introduces cooling plates as intermediary components positioned between adjoining battery blocks. These cooling plates serve dual functions: they maintain close spacing for space optimization while simultaneously acting as thermal barriers and active cooling elements that prevent thermal runaway propagation between blocks through their heat-dissipation surfaces.
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 allows for efficient cooling of multiple cylindrical batteries, preventing thermal runaway and battery degradation by ensuring stable thermal coupling and intercepting high-pressure discharges, while maintaining the structural integrity and electrical safety of the module.
Implementation Method 1
heat-conductive frames 92 conduct and dissipate heat energy of right and left battery modules 90
Implementation Method 2
cooling device 93 is sandwiched between right heat-conductive frame 92A and left heat-conductive frame 92B to cool heat-conductive frames 92
Data Source
AI summary
A battery module includes a battery assembly including battery blocks including cylindrical batteries having bottom surfaces flush with respective planes, the battery blocks being connected to one another in an axial direction of the cylindrical batteries; and a cooling plate configured to cool the cylindrical batteries. The battery blocks have: respective cooling surfaces constituted by respective one end surfaces of the battery blocks; and respective discharge surfaces constituted by respective opposite end surfaces of the battery blocks. The cylindrical batteries include respective discharge valves having respective openings at respective discharge surfaces of the battery blocks. The battery assembly includes a duct gap for discharge between adjoining battery blocks such that a cooling surface of one adjoining battery block faces, across the duct gap, a discharge surface of another adjoining battery block. The cooling plate has an L-shape including a heat-absorption plate portion and a heat-dissipation plate portion connected perpendicularly and unitarily to one another. The heat-absorption plate portion is disposed on and thermally coupled to the cooling surface of one adjoining battery block. The heat-dissipation plate portion is disposed on an outer surface of the battery assembly. The duct gap is provided between the heat-absorption plate portion and the discharge surface of another adjoining battery block.