Electric Vehicle Hub Motor Chassis Design
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Solution Overview
Problem
Existing electric vehicles with mechanical transmission systems suffer from high energy consumption loss, large weight, and increased volume, which negatively impact efficiency and performance.
Innovation Solution
The electric vehicle employs a hub motor system for each wheel, eliminating the need for a traditional mechanical transmission system, featuring a chassis with a frame system, steering motor damping system, and braking system, allowing direct power delivery to the wheels and flexible wheel adjustment.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Loss of energy
If a mechanical transmission system is used, then power can be transmitted from the power battery to the wheels, but energy consumption loss increases and transmission efficiency decreases
Solution Approach 1:
The patent extracts and removes the mechanical transmission system from the vehicle powertrain. By eliminating the reducer and other transmission components, power is delivered directly from the hub motors to the wheels, completely removing the source of mechanical transmission loss and improving energy efficiency.
Solution Approach 2:
The patent replaces the mechanical transmission system with an electrical direct-drive system. The hub motors convert electrical energy directly to mechanical motion at the wheel hub, substituting mechanical power transmission with electrical-to-mechanical conversion, thereby eliminating mechanical friction and transmission losses.
2Power
If a mechanical transmission system is used, then power transmission is achieved, but the vehicle weight increases
Solution Approach 1:
The patent extracts and removes the heavy mechanical transmission components including the reducer, transmission shafts, and associated mounting structures. By eliminating these components, significant weight is reduced while power transmission functionality is maintained through the direct-drive hub motors.
3Power
If a mechanical transmission system is used, then power can be transmitted to the wheels, but the vehicle volume increases
Solution Approach 1:
The patent extracts and removes the mechanical transmission system components that occupy significant vehicle space. By eliminating the reducer, transmission housing, and associated components, valuable vehicle volume is freed up while power delivery to the wheels is maintained through the compact hub motors.
4Power
If a mechanical transmission system is used, then power transmission is achieved, but the structure becomes more complex
Solution Approach 1:
The patent extracts and removes the complex mechanical transmission system including the reducer, transmission shafts, bearings, and associated control mechanisms. By eliminating these components, the overall system complexity is dramatically reduced while power transmission capability is maintained through the simpler direct-drive hub motor configuration.
Data Source
AI summary
Disclosed is an electric vehicle, comprising a chassis (1), a vehicle body and a power battery (71), wherein the chassis (1) comprises a frame system (2), a steering motor damping system (13) mounted on the frame system (2), a wheel system (12) connected to the steering motor damping system (13), a steering system (3) mounted on the frame system (2), and a braking system (4) mounted on the frame system (2); and 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. Driving the wheels (121, 122, 123, 124) with the hub motors can omit a traditional mechanical transmission system, so as to simplify the structure of the chassis (1) and reduce the weight of the chassis (1). Compared with a traditional electric vehicle, the electrical vehicle has a lighter weight, smaller volume, reduced mechanical transmission loss, and improved electrical energy utilization rate.