关键词: 纯电动汽车, 驻坡技术, EHB, 驾驶体验

Abstract: This paper investigates a method for implementing automatic hill-hold functionality in batterry electric vehicles using an electro-hydraulic braking (EHB) system. The approach leverages the existing slope sensor and EHB electronic brake assist system in battery electric vehicles to achieve automatic auxiliary parking assistance. In contrast to the conventional method of relying on the electric motor's immobilization, which carries the risk of motor fatigue and durability issues, this method achieves nearly 1 h of auxiliary hill-hold functionality without the need for electronic parking brake (EPB) hardware, thus reducing system costs and complexity. Through analysis of experimental data and charts, this paper evaluates the stability and adaptability of the automatic hill-hold function under different slopes and road conditions, as well as the response time and dynamic performance when the driver presses the accelerator pedal. The results showcase the performance advantages and effectiveness of this method. This technology contributes to enhancing driving safety and comfort, providing technical support for the intelligent development of battery electric vehicles.

Key words: Battery electric vehicles, Electronic hill-hold technology, EHB, Driving experience