New energy vehicle energy intelligent management method and system, and related device

By identifying candidate energy-saving paths and controlling the engine to operate in the high-efficiency range in hybrid vehicles, the problem of high fuel consumption in existing technologies has been solved, achieving reduced fuel consumption and improved driving comfort.

WO2025246330A1 Publication Date: 2025-12-04BYD CO LTD
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Patent Information

Application Number
PCT/CN2024/142478
Authority / Receiving Office
WO · WO
Patent Type
Applications
Current Assignee / Owner
Priority Date
2024-05-27
Filing Date
2024-12-25
Publication Date
2025-12-04

AI Technical Summary

Technical Problem

Current hybrid electric vehicles primarily rely on energy management strategies that prioritize meeting power demands and maintaining battery state of charge, resulting in higher fuel consumption and failing to adequately consider the impact of road conditions and energy consumption.

Method used

By determining candidate energy-saving paths based on the vehicle's origin and destination, and combining road condition information and energy consumption impact information to predict the vehicle's energy consumption along the path, the travel path with the lowest fuel consumption is selected, and the engine is controlled to operate in the high-efficiency range, thus comprehensively managing the energy distribution of the power battery and engine.

Benefits of technology

It reduces vehicle fuel consumption, improves engine efficiency, enhances driving comfort and overall vehicle economy, and avoids frequent engine start-stop cycles.

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Abstract

A new energy vehicle energy intelligent management method and system, and a related device. The method comprises: determining at least one candidate energy-saving path on the basis of a starting point and an ending point of a vehicle, wherein path-based vehicle energy consumption predicted on the basis of the at least one candidate energy-saving path is lower than path-based vehicle energy consumption predicted on the basis of other paths, and the path-based vehicle energy consumption is predicted on the basis of road condition information of each path and energy consumption impact information; in response to a selection operation on the at least one candidate energy-saving path, determining a preset travel path, wherein the preset travel path comprises a plurality of road sections, and the path-based vehicle energy consumption comprises road section-based vehicle energy consumption of the plurality of road sections; and by taking the minimization of fuel consumption along the preset travel path as an objective, controlling an operation state of an engine on the basis of an initial SOC of a power battery and the road section-based vehicle energy consumption at each road section and an actual vehicle demand of the vehicle, so that the engine is in an efficient operation range during operation.
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