Cargo Vehicle Frame Layout With Battery Cooling and Low Center of Gravity
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Solution Overview
Problem
Human-powered freight vehicles face challenges with maneuverability and load distribution, leading to instability and strain on the rider due to randomly aligned cargo areas, elevated centers of gravity, and limited speed and load capacity.
Innovation Solution
A vehicle design featuring a frame with structural elements forming a compartment for cargo, an energy unit compartment with a thermal management system using fluid passages for cooling, and a handlebar positioned apart from the steering axis, ensuring efficient fluid flow for thermal management and maintaining a lower center of gravity.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Quantity of substance
If cargo area is randomly placed on the vehicle, then cargo capacity is achieved, but vehicle maneuverability deteriorates due to dangerous and difficult maneuvers caused by various moments acting on the vehicle
Solution Approach 1:
The vehicle is divided into distinct functional zones: cargo area positioned low and between the wheels, energy unit compartment separated and positioned low, and rider area positioned centrally. This segmentation allows each component to be optimized independently for its specific function while maintaining overall vehicle balance and maneuverability.
Solution Approach 2:
The cargo area is positioned in a three-dimensional space between the wheels and low to the ground, utilizing the vertical and lateral dimensions rather than just longitudinal placement. This spatial arrangement creates a more favorable moment distribution compared to traditional longitudinal positioning, improving maneuverability while maintaining cargo capacity.
2Ease of operation
If load is positioned at higher location to accommodate rider, then rider comfort is improved, but center of gravity is raised making the vehicle wobbly and difficult to balance and steer
Solution Approach 1:
The energy unit compartment acts as a counterweight positioned low in the vehicle frame, below the rider's center of gravity. This low-positioned mass compensates for the elevated rider position, maintaining a low overall center of gravity for the loaded vehicle and preventing wobbling and steering difficulties.
Solution Approach 2:
Instead of positioning the energy units horizontally behind the rider, they are positioned vertically below the rider in the third dimension (vertical axis). This vertical placement lowers the center of gravity without restricting rider movement, solving both comfort and stability requirements simultaneously.
3Quantity of substance
If load is kept behind the rider, then cargo capacity is achieved, but backward movement of rider is restricted and tremendous strain is caused on rider's back
Solution Approach 1:
The vehicle separates cargo function and energy storage function into distinct compartments: cargo area positioned low between the wheels for load carrying, and energy unit compartment positioned low and separate from the rider area. This segmentation eliminates the need for load behind the rider, freeing rider movement and eliminating back strain.
4Power
If energy units are positioned in the vehicle, then power capacity is improved, but thermal management becomes challenging due to heat generation
Solution Approach 1:
The thermal management system extracts heat from the energy unit compartment through dedicated fluid passages that route coolant from the front of the vehicle, through the energy unit compartment, and out the rear. This separate thermal management pathway effectively removes heat without interfering with other vehicle systems.
Solution Approach 2:
The fluid passages serve multiple functions: they provide structural support as part of the vehicle frame, enable thermal management of energy units, and can potentially serve as mounting structures for other components. This multi-functionality reduces overall system complexity.
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
Enhances maneuverability and stability by efficiently managing thermal energy and distributing cargo, reducing strain on the rider and improving handling and speed.
Implementation Method 1
a thermal management system comprising at least one inlet fluid passage/channel mounted on at least one of the plurality of structural elements and adapted to allow a flow of fluid from the ambient environment towards the at least one energy unit compartment
Implementation Method 2
a thermal management system adapted to maintain a temperature of the at least one energy unit compartment
Data Source
AI summary
A vehicle includes a frame having a plurality of structural elements coupled with each other to define a compartment adapted to accommodate a cargo; at least one energy unit compartment positioned on one of the plurality of structural elements, the at least one energy unit compartment adapted to accommodate at least Energy unit of the vehicle; and a thermal management system adapted to maintain a temperature of the at least one energy unit compartment. The thermal management system comprises at least one inlet fluid passage/channel and adapted to allow a flow of fluid from the ambient environment towards the at least one energy unit compartment. The at least one energy unit compartment is exposed to the flow of fluid entering through the at least one inlet fluid passage/channel; and at least one outlet fluid passage/channel mounted on at least one of the plurality of structural elements.