Diagnosis method, apparatus and device, storage medium and vehicle

By decoupling diagnostic tasks from driver inputs through battery capacity and power demand assessment, the method ensures consistent and reliable oxygen sensor diagnostics in extended-range electric vehicles, improving success rates and reducing interference.

AE202602081AUndeterminedROX MOTOR TECH CO LTD
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Patent Information

Authority / Receiving Office
AE · AE
Patent Type
Applications
Current Assignee / Owner
ROX MOTOR TECH CO LTD
Filing Date
2024-08-16

AI Technical Summary

Technical Problem

The current diagnostic method for oxygen sensors in extended-range electric vehicles fails to achieve a high success rate due to interference from driver actions during deceleration fuel cutoff conditions, leading to inconsistent diagnostic outcomes.

Method used

A diagnostic method that decouples the execution of diagnostic tasks from vehicle driving by assessing the battery discharge capacity and power demand, allowing the range extender to enter an optimal operating state for tasks like oxygen sensor diagnosis, thereby isolating the diagnostic process from driver inputs.

Benefits of technology

This approach improves the diagnostic success rate by ensuring that diagnostic tasks are executed only when the vehicle's power demands are met, reducing the impact of driver actions and enhancing the reliability and accuracy of sensor diagnostics.

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Abstract

The present application belongs to the technical field of vehicles. Disclosed are a diagnosis method, apparatus and device, a storage medium and a vehicle. The method is applied to a power domain controller of an extended-range electric vehicle, and comprises: receiving a diagnosis request sent by an engine controller of the extended-range electric vehicle, wherein the execution of a diagnosis task corresponding to the diagnosis request is related to a range extender of the extended-range electric vehicle; in response to the diagnosis request, acquiring the discharge capacity of a battery of the extended-range electric vehicle and the power requirements of the extended-range electric vehicle; and when the discharge capacity meets the power requirements, controlling the range extender to be in an operating state corresponding to the diagnosis task, and executing the diagnosis task.
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