Electric Tractor Battery Housing Cooling Layout
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Solution Overview
Problem
Existing electric vehicles, particularly electric tractors, face challenges in efficiently cooling their battery systems, which can impact performance and longevity.
Innovation Solution
An air cooling system is implemented in the electric tractor, featuring a specific arrangement of components such as an AC compressor, condenser, drier, and evaporators, supported by a frame structure, to effectively cool battery modules.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Reliability
If a conventional cooling system layout is used in electric vehicles, then the system structure is simple, but the cooling efficiency of battery modules is insufficient
Solution Approach 1:
The cooling system is segmented into multiple independent components (compressor, condenser, evaporators, expansion valves) arranged in specific spatial configurations. Multiple evaporators are distributed to cool different battery modules independently, allowing optimized cooling paths for each segment while maintaining overall system efficiency.
Solution Approach 2:
The patent utilizes three-dimensional spatial arrangement of cooling components, positioning evaporators at different heights and locations relative to battery modules. The condenser is placed above the compressor, and evaporators are positioned both forward and rearward of the front axle, creating efficient thermal pathways in multiple spatial dimensions.
2Temperature
If battery cooling is prioritized, then battery temperature control improves, but vehicle space utilization is reduced
Solution Approach 1:
The cooling system components are merged into an integrated arrangement where the compressor, condenser, evaporators, and expansion valves work as a unified thermal management system. This consolidation optimizes space utilization by eliminating redundant components and creating efficient thermal pathways within constrained vehicle volume.
Solution Approach 2:
The system employs adjustable expansion valves that can dynamically regulate refrigerant flow to multiple evaporators based on real-time battery temperature requirements. This dynamic control allows the system to adapt cooling capacity to actual thermal demands, optimizing both temperature control and energy efficiency without requiring excessive system capacity.
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 enhances the cooling efficiency of battery modules, maintaining optimal operating conditions and reducing degradation, thereby improving the performance and lifespan of the electric tractor.
Implementation Method 1
a condenser (42) mounted on a first front surface portion of the battery housing
Implementation Method 2
the condenser (42) mounted on a first front surface portion of the battery housing
Implementation Method 3
a first evaporator (48) mounted forward of a second front surface portion of the battery housing
Implementation Method 4
the first evaporator (48) mounted forward of a second front surface portion of the battery housing in a front-rear direction of the electric work vehicle
Implementation Method 5
an AC compressor (40) supported by the battery housing
Data Source
AI summary
An electric work vehicle includes a frame, a battery housing to house a plurality of battery modules, the battery housing being supported by the frame, an AC compressor supported by the battery housing, a condenser mounted on a first front surface portion of the battery housing, a drier fluidly connected to the AC compressor and the condenser, and a first evaporator mounted forward of a second front surface portion of the battery housing in a front-rear direction of the electric work vehicle. The first evaporator is located rearward of the drier in the front-rear direction of the electric work vehicle.