Mild Hybrid Electric Vehicle Operating Strategy for Optimized Driving Dynamics
By reducing the recovered power and increasing generator operation in the 48V battery system of a light hybrid electric vehicle to ensure charging balance, the dynamic deterioration caused by battery overheating is solved, and the efficient operation and driving performance of the battery system is improved.
Patent Information
- Application Number
- CN202110600402.5
- Authority / Receiving Office
- CN · China
- Patent Type
- Patents(China)
- Current Assignee / Owner
- Priority Date
- 2020-07-24
- Filing Date
- 2021-05-31
- Publication Date
- 2025-03-21
- Estimated Expiration
- 2041-05-31
AI Technical Summary
The 48V battery of light hybrid electric vehicles is prone to overheating when it is required at the same time as high recovery power and high boost power, resulting in heat loss and boost power reduction, which in turn deteriorates driving dynamics.
Ensure charging balance by reducing the recovered power and running through generators in dynamic driving conditions to prevent overheating of the battery. Specific measures include providing all driving power in the assist phase, limiting the recovery power in the brake phase, and operating in generator mode during the traction phase to compensate for the assist power.
It effectively avoids thermal loss of 48V batteries, ensures the continuous provision of assist power, improves driving dynamics, and reduces battery power loss.