Electric ATV Battery-Motor Layout Using Overhang Nesting
Find Innovative SolutionsGenerate Solutions
Solution Overview
Problem
Existing electric ATV designs face challenges in efficiently utilizing space to accommodate large batteries and drive motors within a limited vehicle body volume, with conventional batteries and motors being apart and occupying significant space.
Innovation Solution
The battery is designed with an upper portion that overhangs horizontally, allowing the drive motor to be positioned below, effectively utilizing space beneath the projection, and the battery is supported by frames with elastic members to reduce vibrations and facilitate easy removal.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Device complexity
If the battery is formed in a rectangular parallelepiped shape and positioned separately from the electric motor, then the layout of components is simplified, but the battery volume is reduced and space utilization is poor
Solution Approach 1:
The battery is nested within the frame structure, with the upper portion inserted into the upper frame and the lower portion into the lower frame. The electric motor is positioned within the hollow portion of the battery, creating a nested arrangement where the motor is contained within the battery's spatial envelope. This nesting principle allows the battery to achieve a larger effective volume while maintaining simplified component layout.
Solution Approach 2:
The battery transitions from a conventional single-level rectangular parallelepiped to a two-tiered structure with upper and lower portions positioned at different vertical levels. The upper portion extends in the width direction and is inserted into the upper frame, while the lower portion is inserted into the lower frame. This dimensional arrangement optimizes space utilization without significantly increasing layout complexity.
2Use of energy by moving object
If the battery volume is increased to provide more electric power, then the energy capacity is improved, but the space required for layout increases
Solution Approach 1:
The electric motor is nested within the hollow portion of the battery structure, allowing the battery to utilize the space that would otherwise be occupied by the motor. This nesting arrangement increases the effective battery volume and energy capacity without requiring additional external space, as the motor and battery share the same spatial envelope.
Solution Approach 2:
The battery is arranged in a two-tiered vertical configuration with upper and lower portions at different levels. The upper portion extends in the width direction and is inserted into the upper frame, while the lower portion is inserted into the lower frame. This vertical stacking in another dimension allows increased energy capacity without proportionally increasing the horizontal footprint.
3Stability of the object's composition
If the battery is supported rigidly by the frames, then the structural stability is improved, but the vibrations and impacts are increased
Solution Approach 1:
Vibration isolation members are introduced as intermediary elements between the battery and the frames. These members are positioned between the upper portion of the battery and the upper frame, and between the lower portion of the battery and the lower frame. The vibration isolation members mediate the connection, providing structural support while attenuating vibrations and impacts transmitted between the battery and frames.
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 design allows for a satisfactory layout of the battery and drive motor within a limited space, increasing battery volume while reducing impacts and vibrations, and enabling easy battery removal without protruding connectors.
Implementation Method 1
a first vibration isolation member provided between the upper portion and the upper frame; a second vibration isolation member provided between the lower portion and the lower frame
Data Source
AI summary
A vehicle includes an upper frame, a lower frame, a front frame, a rear frame, a pair of rear wheels, a drive motor to drive the pair of rear wheels, a battery supported by the upper frame and the lower frame to supply electric power to the drive motor, a straddled seat at a higher position than the drive motor, and a bar handle at a higher position than the straddled seat. The battery includes a battery lower portion and a battery upper portion. The battery upper portion includes a projection that overhangs in at least a horizontal direction with respect to the battery lower portion. At least a portion of the drive motor is below or directly below the projection.