Single-Chip Vehicle Powertrain Controller for Multi-Function Integration
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Solution Overview
Problem
Current all-in-one control units in the industry lack the capability for complex functional integration based on a single master chip, failing to meet the requirements of low-cost, modular, and platform-oriented electronic control systems.
Innovation Solution
A control unit architecture that integrates a master chip with multiple functional circuits, including traction motor, DC-DC converters, transmission, and battery management systems, allowing for centralized control and reducing hardware costs while improving stability.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Reliability
If multiple control functions are integrated into separate control units, then each control unit can be optimized for its specific function, but the overall system complexity and hardware cost increase
Solution Approach 1:
The patent merges multiple control functions (traction motor control, generation motor control, DC-DC converter control, transmission control, throttle control, OBC control, and BMS) into a single integrated control unit with one master chip. This consolidation reduces the number of separate control units from seven to one, thereby reducing system complexity and hardware cost while maintaining functional optimization through dedicated control circuits for each function.
Solution Approach 2:
The master chip in the integrated control unit is designed to perform multiple control functions simultaneously. It can control different motor types (traction and generation), power conversion (DC-DC converters), transmission components, throttle actuation, onboard charging, and battery monitoring within a single device, making the control unit universal and multi-functional.
Data Source
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AI summary
This disclosure provides a control unit, a powertrain, and a vehicle, relating to the field of vehicle technologies. The control unit includes a master chip, and at least two of a traction motor drive circuit, first and second DC-DC converter drive circuits, a transmission drive circuit, a throttle signal sampling circuit, an OBC drive circuit, and a BMS that are connected to the master chip. The traction motor drive circuit drives a traction motor to work. The first DC-DC converter drive circuit drives a first DC-DC converter to boost a voltage of a power battery. The transmission drive circuits drive a transmission solenoid to work. The throttle signal sampling circuit samples a throttle signal of a vehicle. The second DC-DC converter drive circuit drives a second DC-DC converter to buck a voltage of the power battery. The OBC drive circuit drives an OBC to work. The BMS monitors a status of the power battery.