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A diagnostic system for electric vehicles

A diagnostic system, electric vehicle technology, applied in electrical testing/monitoring, etc.

Active Publication Date: 2016-06-08
奇瑞新能源汽车股份有限公司
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0005] The purpose of the present invention is to provide an advanced and low-cost system for on-line monitoring and recording of faults and life of electric vehicles, and a system based on standard diagnostic protocols, which can effectively solve problems such as development and aftermarket operation monitoring, fault diagnosis, and use safety. , to meet the safety requirements of automobile use, which is conducive to the continuous improvement of automobile quality

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  • A diagnostic system for electric vehicles
  • A diagnostic system for electric vehicles

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Embodiment Construction

[0024] The present invention will be described in detail below according to the accompanying drawings, which is a preferred embodiment among various implementations of the present invention.

[0025] refer to figure 1 As shown in the schematic diagram of the vehicle failure and life diagnosis system, the hardware scheme adopted by the system of the present invention includes a MCU single-chip microcomputer (including a data storage module), a power supply maintenance circuit module, and a CAN communication circuit module.

[0026] Preferably, the communication interface with the CAN bus of the vehicle adopts an optical coupling circuit, which can improve the electrical anti-interference ability with the CAN bus of the vehicle.

[0027] The data storage circuit module adopts the built-in DATAFLASH module of the MCU microcontroller (32-bit MCU is generally equipped with a built-in data memory) to save costs.

[0028] Optionally, if the MCU is not configured with a DATAFLASH mod...

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Abstract

The invention relates to an electric automobile diagnostic system which is an electric automobile controller failure and service life online diagnostic system. The diagnostic system comprises an MCU (Microcontroller Unit) singlechip, a power supply retaining circuit module and an electric controller software module, wherein the power supply retaining module is used for retaining the power supply of the MCU singlechip after an automobile key is shut down till software actively turns off the power supply, as a result, a failure and service data storage function is achieved. The electric controller software module comprises a failure diagnostic module, a service life calculation module, a diagnostic communication protocol module and a data storage and recovery module, wherein the failure diagnostic module contains a funnel dynamic algorithm for executing a failure diagnostic strategy, and is used for online failure diagnosis; the service life calculation module is used for online service life calculation and analysis; the diagnostic communication protocol module is used for communicating with a diagnosis instrument; and the data storage and recovery module is used for power-down saving and power-on recovery of failure and service life data.

Description

technical field [0001] The invention relates to the operation monitoring technology of electronically controlled vehicles, in particular to a device and method for fault monitoring and life monitoring of electronically controlled vehicles. Background technique [0002] The current electric vehicle technology is developing very rapidly and is in the rising stage of market promotion. As an emerging model, electric vehicles have more prominent problems in vehicle safety and parts quality than traditional models. As the core component of electric vehicles, electronic controllers have a direct impact on the function and safety of vehicles in terms of fault status and operating life, and are also a matter of great concern to manufacturers and 4S stores. [0003] Traditional models will be equipped with or integrate an OBD diagnostic device to record the status of engine emission faults to meet the needs of emission regulations and fault diagnosis. Once a fault occurs and needs t...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): G05B23/02
Inventor 王振庆
Owner 奇瑞新能源汽车股份有限公司
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