Dual Power-Source Drive Assembly With Two-Speed Axle Output
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Solution Overview
Problem
Current purely electrical driven or mixed power new energy automobiles fail to meet the requirements for speed ratio, torque, acceleration capability, climbing ability, and maximum vehicle speed, especially on complex road conditions, due to their single-speed transmission and complex transmission structures.
Innovation Solution
A vehicle two-power-source dual driving assembly with symmetrically arranged driving units, each equipped with a power source and automatic transmission, allowing for two switchable speed ratios and modular design, which reduces axial size and simplifies the transmission structure, enabling flexible transmission modes for different road conditions.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Device complexity
If a single-speed transmission system is used in purely electrical or mixed power vehicles, then the transmission structure is simple, but the acceleration capability, climbing ability, and maximum vehicle speed cannot satisfy the requirements on complicated road conditions
Solution Approach 1:
The patent applies dynamics by making the transmission ratio adjustable rather than fixed. The dual automatic transmissions enable the system to dynamically switch between two different speed ratios (first and second speed ratios) depending on driving conditions, allowing the transmission system to adapt its characteristics in real-time to match varying road conditions and performance requirements.
Solution Approach 2:
The patent implements universality by designing a transmission system that can perform multiple functions through two different speed ratios. The first automatic transmission provides a first speed ratio optimized for certain conditions, while the second automatic transmission provides a second speed ratio for different conditions, making the overall system universally applicable across various road surfaces and driving scenarios.
2Ease of manufacture
If the power source and automatic transmission are designed as separate components, then each component can be optimized independently, but the axial size becomes large and the arrangement on the vehicle becomes difficult
Solution Approach 1:
The patent applies merging by integrating the power source and automatic transmission into a unified structure. The rotor shaft of the power source is directly connected to the input shaft of the automatic transmission, combining two previously separate components into one compact assembly, thereby reducing the overall axial size while maintaining the ability to optimize each component's design.
3Speed
If multiple gears are used in the transmission to achieve different speed ratios, then the speed ratio requirements can be met, but the transmission structure becomes complex and the service life decreases
Solution Approach 1:
The patent applies segmentation by dividing the transmission function into two separate automatic transmissions rather than using a single complex multi-gear system. Each automatic transmission handles one speed ratio, simplifying the structure of each individual transmission while achieving the overall goal of providing multiple speed ratios through parallel modular units.
4Device complexity
If a single power source is used, then the system is simple, but the driving force is insufficient for special vehicles such as sports cars and racing cars
Solution Approach 1:
The patent applies dimensionality change by transitioning from a single power source configuration to a dual power source arrangement. Instead of increasing the power of a single source, the system adds another dimension to the power delivery capability by utilizing two power sources working in parallel, thereby substantially increasing the available driving force without overly complicating the fundamental system architecture.
Data Source
AI summary
The present disclosure discloses a vehicle two-power-source dual driving assembly, wherein, the vehicle two-power-source dual driving assembly comprises two sets of driving units that are symmetrically arranged, the two sets of driving units connect to a same set of vehicle axle half shafts, each of the sets of driving units is provided with a power source and an automatic transmission, and each of the automatic transmissions connects to one of the vehicle axle half shafts. The automatic transmission is provided therein with an input shaft, an intermediate shaft and an output shaft that are parallel, the input shaft, the intermediate shaft and the output shaft are provided thereon with multistage gears with different transmission ratios, the power source connects to the input shaft, and the output shaft connects to a left half shaft or a right half shaft of the vehicle axle half shaft. The present disclosure can realize transmission of two speed ratios, with flexible transmission modes, which shortens the axial size of the driving assembly, which cannot only satisfy the acceleration capability and climbing ability of the vehicle but also satisfy the demand on high vehicle speed.