Hub Motor EV Chassis Eliminates Mechanical Transmission
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Solution Overview
Problem
Existing electric vehicles utilize mechanical transmission systems, which reduce electricity utilization efficiency due to energy loss and complex, heavy structures.
Innovation Solution
An electric vehicle chassis design featuring a frame system with hub motors for each wheel, eliminating the need for mechanical transmission by using a steering motor damping system and a lightweight, multi-cavity aluminum alloy frame structure that supports the vehicle body and reduces weight and energy loss.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Reliability
If a mechanical transmission system is used in electric vehicles, then the vehicle can achieve traditional power transmission, but the structure becomes complicated and weight increases
Solution Approach 1:
The patent extracts and removes the mechanical transmission system from the electric vehicle chassis, eliminating the complex transmission components (gearboxes, differential cases, shafts) while retaining the essential power transmission function through direct hub motor integration at each wheel
Solution Approach 2:
The patent replaces the mechanical transmission system with an electrical control system where hub motors directly drive the wheels, substituting mechanical power transmission with electrical power delivery and electronic control
2Power
If a mechanical transmission system is used in electric vehicles, then the vehicle can transmit power to wheels, but energy loss increases and electricity utilization efficiency decreases
Solution Approach 1:
The patent replaces mechanical power transmission with direct electrical power delivery from hub motors to wheels, eliminating mechanical friction, gear inefficiencies, and transmission losses while maintaining full power transmission capability
Solution Approach 2:
The patent segments the power transmission system into independent hub motors at each wheel, allowing direct power delivery to each wheel individually, which eliminates the need for a centralized mechanical transmission system and reduces overall energy loss
3Ease of manufacture
If traditional vehicle components are adapted for electric vehicles, then the chassis can be modified with minimal changes, but the structure remains heavy and complex
Solution Approach 1:
The patent extracts and removes traditional heavy mechanical transmission components from the chassis while retaining the essential structural framework, significantly reducing chassis weight while maintaining structural integrity
Solution Approach 2:
The patent employs aluminum alloy materials for the chassis frame and components, replacing traditional steel-based mechanical transmission parts with lightweight aluminum structures that maintain strength while reducing weight
Data Source
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AI summary
Disclosed are an electric vehicle chassis and an electric vehicle using the electric vehicle chassis. The electric vehicle chassis comprises a frame system (2), a steering motor damping system (13), a wheel system (12), a steering system (3) and a braking system (14), wherein the wheel system (12) comprises a left front wheel (121) using a hub motor, a left rear wheel (123) using a hub motor, a right front wheel (122) using a hub motor, and a right rear wheel (124) using a hub motor; and the steering motor damping system (13) comprises a left front steering damping motor (131), a right front steering damping motor (133), a left rear steering damping motor (135) and a right rear steering damping motor (137). Driving the wheels with the hub motors can omit a traditional mechanical transmission system, so as to simplify the structure of the chassis, reduce the weight of the chassis, and also reduce the mechanical transmission loss, thereby improving the power utilization efficiency.