Power Storage Module Layout With Resin-Covered Cooling Pipe Insulation
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Solution Overview
Problem
Condensation water can adhere to the surface of cooling pipes in power storage devices, leading to short circuits, and hot gas discharge can introduce electrically-conductive debris that causes short circuits between adjacent power storage modules.
Innovation Solution
A power storage device design that includes a resin member covering the cooling pipe and bus bar, with a reinforcement member and accommodation case to separate and protect the modules, and a wire harness supported by the resin member, enhancing insulation and preventing short circuits.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Temperature
If a cooling pipe is used for thermal management, then cooling efficiency is improved, but condensation water adheres to the pipe surface causing short circuits
Solution Approach 1:
A resin member is introduced as an intermediary substance between the cooling pipe and the surrounding environment. This resin member covers the cooling pipe surface, preventing condensation water from directly adhering to the pipe while allowing the cooling function to operate effectively.
Solution Approach 2:
The resin member forms a protective film or shell around the cooling pipe. This flexible covering acts as a barrier that prevents condensation water adhesion while maintaining the thermal management functionality of the cooling pipe.
2Volume of stationary object
If power storage modules are placed close together to increase density, then space utilization is improved, but debris from hot gas discharge causes short circuits between adjacent modules
Solution Approach 1:
The resin member acts as an intermediary protective barrier between adjacent power storage modules. It prevents electrically-conductive debris from hot gas discharge from reaching conductive components like bus bars, thereby eliminating short circuit risks while allowing modules to be densely packed.
Solution Approach 2:
The resin member provides preliminary protection by covering conductive components before debris can cause damage. This preventive measure stops potential short circuits before they occur, allowing for higher module density without compromising safety.
3Reliability
If resin member is added to cover cooling pipe and bus bar, then insulation and short circuit prevention are improved, but device complexity increases
Solution Approach 1:
The resin member simultaneously serves multiple functions: it covers the cooling pipe to prevent condensation adhesion, covers the bus bar to provide electrical insulation, and protects against debris. By combining these protective functions into a single component, the design achieves high reliability without proportionally increasing complexity.
Data Source
AI summary
A power storage device comprises a first power storage module, a second power storage module spaced apart from the first power storage module, a cooling pipe passing between the first power storage module and the second power storage module, a bus bar connected to the second power storage module and passing between the first power storage module and the second power storage module, and a resin member that is disposed between the first power storage module and the second power storage module and that covers the cooling pipe and the bus bar between the first power storage module and the second power storage module.