Battery Housing Air Cooling With Multi-Evaporator Warm Air Paths
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Solution Overview
Problem
Existing electric work vehicles, such as electric tractors, face challenges in effectively cooling their battery systems, which can lead to reduced performance and efficiency due to overheating.
Innovation Solution
The implementation of an air cooling system that includes multiple evaporators and warm air paths to efficiently exhaust warm air from the battery housing, utilizing a network of ducts and blowers to direct air flow and enhance cooling.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Device complexity
If a single evaporator is used for battery cooling, then the device complexity is reduced, but the cooling effectiveness and temperature management capability deteriorate
Solution Approach 1:
The battery housing is divided into multiple compartments (first battery housing portion, second battery housing portion, third battery housing portion), and correspondingly, multiple evaporators (first evaporator, second evaporator, third evaporator) are used to cool different regions independently. This segmentation allows for better temperature management across the entire battery system while maintaining a manageable structural complexity through modular design.
2Productivity
If multiple warm air paths are implemented, then the cooling coverage and efficiency are improved, but the device complexity increases
Solution Approach 1:
The air cooling system is designed with multiple evaporators that can handle different types of loads simultaneously. The first evaporator handles cooling from the first battery housing portion, the second evaporator handles cooling from the second battery housing portion, and the third evaporator provides additional cooling capacity. This multi-functional design improves cooling efficiency while the integrated system architecture keeps the overall complexity manageable.
3Temperature
If evaporators are distributed across different locations, then the cooling coverage is improved, but the manufacturing and assembly complexity increases
Solution Approach 1:
The evaporators are arranged in a three-dimensional space around the battery housing, with the first evaporator positioned at one location, the second evaporator at another location, and the third evaporator providing additional coverage. This spatial distribution improves cooling coverage throughout the battery system. The manufacturing complexity is managed through modular design where each evaporator assembly can be manufactured and tested independently before final integration.
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 air cooling system effectively manages the temperature of the battery system, improving the performance and efficiency of the electric work vehicle by maintaining optimal operating conditions.
Implementation Method 1
the air cooling system includes a first evaporator and a second evaporator, the first warm air path fluidly connects the first battery housing portion to the first evaporator to exhaust first warm air from the first battery housing portion to the first evaporator
Implementation Method 2
the second warm air path fluidly connects the first battery housing portion to the second evaporator to exhaust second warm air from the first battery housing portion to the second evaporator
Data Source
AI summary
An electric work vehicle includes a battery housing including a first battery housing portion and an air cooling system. The air cooling system includes a first warm air path and a second warm air path, the air cooling system includes a first evaporator and a second evaporator, the first warm air path fluidly connects the first battery housing portion to the first evaporator to exhaust first warm air from the first battery housing portion to the first evaporator, and the second warm air path fluidly connects the first battery housing portion to the second evaporator to exhaust second warm air from the first battery housing portion to the second evaporator.