Electric ATV Battery Pack Layout for Stability and Range
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Solution Overview
Problem
The electrification of all-terrain vehicles (ATVs) leads to increased battery pack weight and volume, affecting driving performance and handling, particularly if the battery pack is not reasonably positioned, which can result in instability and increased risk of overturning.
Innovation Solution
The electric ATV features a strategically positioned battery pack with a center of gravity offset distance less than or equal to 300 mm from the transverse mid-plane, and edge distances between 30 mm to 165 mm, integrated into a frame design that includes a front and rear frame assembly with a battery pack receiving area, allowing for even weight distribution and improved stability.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Duration of action of moving object
If the battery pack volume and weight are increased to extend the vehicle range, then the energy storage capacity is improved, but the driving performance and handling performance deteriorate
Solution Approach 1:
The battery pack is positioned in the longitudinal direction between the front and rear differentials rather than being placed laterally or at the extreme ends, utilizing the longitudinal space dimension to achieve balanced weight distribution while maximizing energy storage capacity
Solution Approach 2:
The battery pack is strategically positioned with specific offset distances from the transverse mid-plane (≤300mm) and specific edge distances from the longitudinal mid-plane (30-165mm), creating localized optimal weight distribution zones that improve handling while maintaining extended range
2Quantity of substance
If the battery pack is not reasonably positioned, then the energy storage capacity can be maximized, but the vehicle stability deteriorates and the risk of overturning increases
Solution Approach 1:
The patent specifies precise parameter ranges for battery pack positioning: offset distance from transverse mid-plane ≤300mm and edge distances from longitudinal mid-plane between 30-165mm, optimizing both energy capacity and stability through controlled parameter variation
Solution Approach 2:
The battery pack positioning creates a counterbalancing effect where the weighted distribution between front and rear axles compensates for the vehicle's tendency to overturn, with the drive shaft positioned under the battery pack creating a stable center of gravity
Data Source
AI summary
An electric all-terrain vehicle includes a frame (11), a vehicle body cover (12), a set of wheels (13) a drive system (14), a motor control unit (15), a drive train (16), a battery pack (17), a steering assembly (18), and a suspension (19). The drive train includes a drive shaft (163) disposed between a front differential (161) and a rear differential (162). The drive shaft is at least partially disposed under the battery pack such that the drive shaft and the battery pack at least partially overlap in plan view, and a battery pack offset distance between the battery pack center of gravity and the transverse mid-plane is less than or equal to 300 mm.