Vehicle diagnosis system and method, and vehicle

Abstract

The invention provides a vehicle diagnosis system and method, and a vehicle. The vehicle diagnosis system comprises a first fault diagnosis module which is used for carrying out fault diagnosis on an electric quantity storage system of the vehicle according to a first preset diagnosis standard and a second preset diagnosis standard, and outputting a corresponding fault code and a fault type; a second fault diagnosis module which is used for performing fault diagnosis on a battery management system according to the first preset diagnosis standard and the second preset diagnosis standard and outputting a corresponding fault code and a fault type; and a fault processing module which is used for receiving the fault codes and the fault types sent by the first fault diagnosis module and the second fault diagnosis module, and executing corresponding fault processing strategies according to the fault codes and the fault types. Specific diagnosis specifications are designed for the high-voltage battery system of the vehicle, and corresponding fault diagnosis and fault processing can be performed on the electric quantity storage system and the battery management system, so that the fault diagnosis efficiency is improved, quick and effective troubleshooting is facilitated, and the vehicle safety is improved.

Description

technical field [0001] The invention relates to the technical field of vehicles, in particular to a vehicle diagnosis system, method and vehicle. Background technique [0002] At present, vehicle fault diagnosis is basically realized through OBD (On Board Diagnostics, on-board automatic diagnosis system). OBD can be used to monitor the basic parameters of the vehicle, such as monitoring mileage, vehicle speed, accelerator pedal position, coolant temperature, etc.; it can also be used to monitor emission-related parameters, such as the content of various exhaust gases, oxygen content, etc., so that To ensure that the standards of various countries are met; and for the diagnosis of vehicle faults, for example, the vehicle fault light is on, and after being sent to the repair shop, the maintenance personnel will take out the diagnostic instrument and request the fault content and freeze frame data at the time of the fault. Use this for troubleshooting. [0003] The vehicle hi...

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Problems solved by technology

[0003] The vehicle high-voltage battery system is one of the core components of the vehicle. However, at present, when the vehicle is used for fault diagnosis through OBD, no specific diagnostic specifications have been designed for the vehicle high-voltage battery system, and the corresponding fault diagnosis and fault treatment cannot be effectively carried out.

[0004] In addition, OBD needs to integrate many functions, so when diagnosing vehicle faults, the diagnostic effect it can achieve is limited. Generally, it can only detect fault codes, and then maintenance personnel need to obtain fault codes through diagnostic instruments to confirm faults. , and then the maintenance personnel will deal with the fault. The operation process is cumbersome and complicated, and the efficiency is not high, which is not conducive to quick troubleshooting

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