Nested Battery Housing Ducts for Electric Work Vehicle Cooling
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Solution Overview
Problem
Existing electric work vehicles, such as electric tractors, face challenges in efficiently cooling their battery systems, which can lead to reduced performance and lifespan due to overheating.
Innovation Solution
The design incorporates a battery housing with multiple stepped portions that define spaces for warm air paths, including ducts, to effectively exhaust heat from the battery housing portions, ensuring efficient cooling of the battery systems.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Temperature
If a simple battery housing design is used, then manufacturing cost and device complexity are reduced, but cooling efficiency deteriorates due to insufficient heat exhaust pathways
Solution Approach 1:
The battery housing is divided into multiple portions (first battery housing portion and second battery housing portion) with distinct stepped portions and spaces. Each portion has dedicated warm air paths and ducts for heat exhaust, allowing independent cooling optimization for different battery sections while maintaining manageable structural complexity through modular design.
Solution Approach 2:
The patent utilizes three-dimensional spatial arrangement by positioning the second battery housing portion within the first space defined by the first stepped portion. Warm air paths are routed through multiple levels (first space, second space, third space) at different heights, creating efficient heat exhaust pathways that utilize vertical and horizontal dimensions without increasing overall footprint.
2Volume of moving object
If battery housing portions are arranged compactly, then vehicle space utilization is improved, but heat exhaust efficiency deteriorates due to restricted airflow pathways
Solution Approach 1:
The second battery housing portion is positioned within the first space defined by the first stepped portion of the first battery housing portion. This nested arrangement maximizes space utilization by placing components in three-dimensional space efficiently, while dedicated warm air paths ensure that heat exhaust functionality is not compromised despite the compact nesting.
Solution Approach 2:
Different regions of the battery housing are designed with specific local characteristics: the first battery housing portion includes a first stepped portion with a first warm air path, while the second battery housing portion includes a second stepped portion with a second warm air path. Each local region has optimized airflow characteristics tailored to its specific heat generation and cooling requirements, maintaining high heat exhaust efficiency throughout the compact structure.
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 configuration enhances the cooling efficiency of the battery systems, thereby improving the performance and lifespan of the electric work vehicles by effectively managing heat.
Implementation Method 1
a first battery housing portion (26) and a second battery housing portion (28)... a first warm air path (70) to exhaust warm air from the first battery housing portion (26)... a second warm air path (72) to exhaust warm air from the second battery housing portion (28)
Data Source
AI summary
An electric work vehicle includes a battery housing including a plurality of battery housing portions, and the plurality of battery housing portions include a first battery housing portion and a second battery housing portion, the first battery housing portion includes a first stepped portion that defines a first space, and at least a portion of the second battery housing portion is located within the first space.