Power Storage Module Thermal Management via Segmented Heat Dissipation
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Solution Overview
Problem
Conventional energy storage modules face issues with heat dissipation and insulation, leading to temperature unevenness and safety concerns, particularly when using lithium-ion capacitors, which can result in module damage and failure.
Innovation Solution
The energy storage module incorporates a metal-laminated film structure with a heat-transferring metal plate and heat-releasing fin, thermally bonded by an insulation sheet, allowing efficient heat transfer and release while maintaining insulation and safety standards, and uses a resin case with a metal fitting for indirect heat-releasing fin attachment to enhance protection against vibration and impact.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Strength
If a metal container is used to strengthen the module, then mechanical strength is improved, but heat dissipation becomes insufficient causing temperature rise
Solution Approach 1:
The patent divides the heat dissipation function into separate components: the metal container provides mechanical strength while dedicated heat-releasing fins provide thermal management. This segmentation allows each component to optimize its specific function without compromise.
Solution Approach 2:
The patent introduces heat-releasing fins as an intermediary component between the metal container and the environment. These fins act as a thermal bridge that efficiently transfers heat from the container interior to the exterior, solving the heat dissipation problem without compromising the structural integrity provided by the metal container.
2Temperature
If heat-releasing fins are provided on the metal case for heat dissipation, then heat release is improved, but insulation resistance decreases causing safety issues
Solution Approach 1:
The patent extracts the heat dissipation function from the metal container itself and places it on dedicated heat-releasing fins. This separation allows the container to maintain its insulation properties while the fins provide the necessary thermal management, resolving the conflict between heat dissipation and insulation resistance.
Solution Approach 2:
The heat-releasing fins serve as an intermediary that provides a controlled thermal pathway. By positioning these fins specifically and using them as the sole heat dissipation mechanism, the patent ensures adequate heat release while maintaining the insulation integrity of the main container structure.
3Reliability
If insulation sheets are wrapped around each single cell to provide insulation, then safety insulation is improved, but manufacturing cost increases
Solution Approach 1:
The patent merges the insulation function into the overall module structure rather than requiring individual insulation for each cell. The module-level design provides insulation coverage for all cells collectively, reducing material usage and simplifying the manufacturing process while maintaining safety standards.
Solution Approach 2:
The patent creates a universal insulation structure that serves all cells within the module simultaneously. This multi-functional approach eliminates the need for cell-specific insulation components, reducing both material costs and assembly complexity while ensuring adequate insulation across the entire module.
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 controls temperature rise, prevents module damage, ensures uniform temperature, meets safety insulation standards, reduces manufacturing costs, and enhances the module's energy storage performance by averaging temperature variations and providing robust protection against mechanical stress.
Implementation Method 1
a heat-transferring metal plate 51 having a flat plate portion 52 affixed to the stacking plate 41 covering the aperture 42 and a bent portion 53 to bend at right angle an edge of the flat plate portion 52 located on the exposure outlet 23, and a heat-releasing fin 61 thermally bonded face-to-face to the bent portion 53 of the heat-transferring metal plate 51
Implementation Method 2
a heat-releasing fin 61 thermally bonded face-to-face to the bent portion 53 of the heat-transferring metal plate 51 by the heat-transferring insulation sheet 65 projecting from the exposure outlet 23 leading to the outside of the case 21
Implementation Method 3
the heat-releasing fin 61...projecting from the exposure outlet 23 leading to the outside of the case 21
Implementation Method 4
the heat-transferring metal plate 51 and the heat-releasing fin 61 provided on the exposure outlet are insulated by the heat-transferring insulation sheet 65
Data Source
AI summary
An energy storage module 11 comprises a case 21, a plurality of stacking plates 41, a heat-transferring metal plate 51 and a heat-releasing fin 61. An exposure outlet 23 is provided on the side 21 of the case 22 containing a plurality of energy storage cells 31. The stacking plate 41 having an aperture 42 is located between the plurality of energy storage cells 31 and is latched to another stacking plate 41 to position said plate. The heat-transferring metal plate 51 having a flat plate portion 52 and a bent portion 53 is provided in face-to-face contact with the main face 33 of each cell of the energy storage cells 31. The heat-releasing fin 61 projects from the exposure outlet 23 to the outside of the case 21 and is thermally face-to-face bonded to the bent portion 53 of the heat-transferring metal plate 51 by the insulation sheet 65.