Detachable Battery Liquid Cooling for Fast Charging Without Flight Weight
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Solution Overview
Problem
Existing all-electric vehicles face challenges in efficiently managing battery temperature during charging, especially in extreme ambient conditions, which affects charging time and vehicle readiness, and the added weight of liquid cooling systems during flight reduces flight time.
Innovation Solution
A detachable liquid temperature controlling system that circulates heated or cooled liquid through the battery before, during, and after charging to achieve desired temperature, then drains the liquid before flight, leveraging better thermal performance without adding weight.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Productivity
If liquid cooling system is used to manage battery temperature during charging, then charging efficiency is improved, but vehicle weight increases reducing flight time
Solution Approach 1:
The battery pack is divided into multiple modules, each with independent cooling channels. The liquid cooling system is segmented into multiple flow paths that can be independently controlled, allowing selective cooling of specific battery modules based on their thermal needs, thereby improving charging efficiency without uniformly increasing system weight.
Solution Approach 2:
The battery is pre-cooled before charging begins and pre-heated before flight. Temperature sensors monitor battery temperature continuously, and the liquid cooling system is activated in advance to reach optimal temperature ranges, reducing actual charging time and eliminating the need for continuous heavy cooling systems during flight.
2Temperature
If liquid cooling system is integrated into battery structure, then temperature control performance is improved, but device complexity increases
Solution Approach 1:
The cooling channels are merged directly into the battery module structure, with cooling plates integrated between battery cells. This consolidation eliminates separate cooling components and reduces connection interfaces, improving temperature control while reducing overall system complexity.
Solution Approach 2:
The liquid cooling system serves multiple functions: it cools the battery during charging, heats the battery before flight operations, and provides thermal management for electronic control units. This multi-functionality reduces the need for separate thermal management systems, improving temperature control performance without proportionally increasing complexity.
3Productivity
If rapid charging is implemented, then productivity is improved, but battery temperature management becomes more difficult
Solution Approach 1:
The liquid cooling system operates continuously throughout the charging process, maintaining optimal battery temperature ranges. Cooling fluid flows continuously through channels during rapid charging, preventing temperature buildup and enabling sustained high charging rates without thermal management interruptions.
Solution Approach 2:
Temperature sensors are positioned at multiple locations within the battery pack, providing real-time feedback to the thermal management control unit. The system dynamically adjusts liquid flow rate and temperature based on sensor readings, enabling rapid charging while maintaining precise temperature control through closed-loop feedback.
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
The system quickly adjusts battery temperature for efficient charging, reduces charging time, and maintains flight efficiency by eliminating excess weight from liquid during flight.
Implementation Method 1
A detachable liquid temperature controlling system that circulates heated or cooled liquid through the battery before, during, and after charging to achieve desired temperature
Implementation Method 2
A detachable liquid temperature controlling system that circulates heated or cooled liquid through the battery
Data Source
Figure 1
Figure 2
Figure 3A~3B
AI summary
A liquid temperature controlling system is used to circulate a temperature controlled liquid between the liquid temperature controlling system and a battery to produce a temperature controlled battery. The battery and the liquid temperature controlling system are detachably coupled at least while the temperature controlled liquid is circulated. The temperature controlled liquid is removed from the temperature controlled battery. The battery and the liquid temperature controlling system are decoupled after the temperature controlled liquid is removed. A charger is used to charge the temperature controlled battery.