Battery Unit Phase-Change Cooling for Lightweight Mobile Objects
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Solution Overview
Problem
Existing mobile objects face challenges in efficiently cooling batteries without adding weight or consuming excess energy, as conventional cooling systems increase the weight and energy consumption of the mobile object.
Innovation Solution
A battery unit design that incorporates a solid-state coolant around the battery, which liquefies due to heat and is then discharged, eliminating the need for complex cooling equipment and reducing weight by allowing the coolant to be discharged externally.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Temperature
If conventional cooling systems are used to cool batteries, then cooling effectiveness is improved, but weight and energy consumption increase
Solution Approach 1:
The patent utilizes the phase transition of coolant from solid to liquid state to achieve cooling. The solid coolant absorbs heat from the battery during operation, melts when reaching melting point, and is then discharged. This phase change mechanism provides efficient cooling without requiring heavy mechanical cooling systems.
Solution Approach 2:
The patent extracts the coolant from the mobile object after it has served its cooling purpose. By discharging the liquefied coolant externally, the system eliminates the need for complex coolant circulation systems, pumps, and radiators, thereby reducing overall system weight while maintaining effective cooling.
2Temperature
If conventional cooling systems are used to cool batteries, then cooling effectiveness is improved, but energy consumption increases
Solution Approach 1:
The phase transition from solid to liquid provides a natural heat absorption mechanism that occurs passively without requiring energy input for compression or circulation. The latent heat of fusion is absorbed directly from the battery, providing efficient cooling with minimal energy consumption.
Solution Approach 2:
The solid coolant performs cooling autonomously through its phase transition property. Once placed in contact with the battery, it automatically absorbs heat and melts without requiring external control systems, pumps, or power consumption, achieving self-regulated cooling.
3Weight of moving object
If solid coolant is disposed around battery and discharged after liquefaction, then weight is reduced, but device complexity increases
Solution Approach 1:
The phase transition mechanism provides a simple yet effective cooling approach. The solid coolant naturally melts when absorbing heat from the battery, and the resulting liquid is discharged through a simple opening, avoiding complex circulation systems while achieving weight reduction.
Solution Approach 2:
The system changes the physical state parameter of the coolant from solid to liquid to enable discharge. This parameter change allows the coolant to transition from a stable solid form during storage to a dischargeable liquid form after cooling, simplifying the overall system architecture.
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 approach provides efficient battery cooling while reducing the weight of the mobile object by discharging the liquefied coolant, thus optimizing energy use and minimizing environmental impact.
Implementation Method 1
The coolant in a solid state is disposed around the battery and is liquefied by heat transferred from the battery
Implementation Method 2
The coolant in a solid state is disposed around the battery and is liquefied by heat transferred from the battery
Data Source
AI summary
A mobile object includes a battery, a coolant, and a discharger. The coolant in a solid state is disposed around the battery and is liquefied by heat transferred from the battery. The discharger discharges the coolant liquefied out of the mobile object.