Hybrid Electric Vehicle Energy System and Control Method
The hybrid power system, which combines liquid methanol-to-hydrogen production with bidirectional energy conversion via fuel cell stack, solves the safety and cost issues of hydrogen storage and transportation in fuel cell electric vehicles, achieving efficient energy recycling and stable vehicle operation.
CN122275640APending Publication Date: 2026-06-26NANJING XIAOZHUANG UNIV
Patent Information
- Authority / Receiving Office
- CN · China
- Patent Type
- Applications(China)
- Current Assignee / Owner
- NANJING XIAOZHUANG UNIV
- Filing Date
- 2026-03-25
- Publication Date
- 2026-06-26
AI Technical Summary
Technical Problem
The storage and transportation of hydrogen in fuel cell electric vehicles pose safety risks, and the high cost of building hydrogen refueling stations limits their development.
Method used
Using liquid methanol as fuel, hydrogen is produced through steam reforming, and a fuel cell stack is used to achieve bidirectional energy conversion between power generation and electrolysis modes. Combined with intelligent decision-making by a fuzzy controller, energy allocation and utilization are optimized.
Benefits of technology
It avoids the safety risks and high costs of high-pressure hydrogen storage, achieves efficient hydrogen production and recycling, improves energy efficiency and driving range, and ensures normal vehicle operation.
✦ Generated by Eureka AI based on patent content.
Smart Images
Figure CN122275640A_ABST
Abstract
This invention discloses a hybrid electric vehicle energy system and its control method. The system includes: a fuel processing unit for converting methanol into hydrogen and carbon dioxide and storing them separately; a fuel cell stack with a power generation mode, an electrolysis mode, and a hybrid mode. The power generation mode consumes hydrogen to generate electricity, the electrolysis mode consumes electricity to convert carbon dioxide and water into hydrogen and carbon monoxide, and the hybrid mode operates simultaneously in the first two modes; an energy storage unit for storing energy; a renewable energy generation unit for generating electricity using renewable energy; a power management unit connected to the fuel cell stack, the energy storage unit, the renewable energy generation unit, and the drive motor, for distributing and converting electrical energy; and a control unit for controlling the operation mode of the fuel cell stack according to the relationship between the power supply and power consumption units. This invention achieves efficient power generation without requiring high-pressure fuel storage and reducing the safety risk of fuel leakage.
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