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Method and device for safety monitoring of hybrid electric vehicle

A hybrid electric vehicle, hybrid technology, applied in the direction of hybrid electric vehicles, motor vehicles, transportation and packaging, etc., can solve the problems of high energy consumption, high emissions, etc., to ensure the safety of personnel, ensure the safety of the whole vehicle, improve safety and reliability effect

Active Publication Date: 2017-03-01
奇瑞新能源汽车股份有限公司
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  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0002] Traditional fuel vehicles have the disadvantages of high energy consumption and high emissions. Therefore, hybrid vehicles are becoming more and more popular among users, especially plug-in hybrid vehicles.

Method used

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  • Method and device for safety monitoring of hybrid electric vehicle
  • Method and device for safety monitoring of hybrid electric vehicle
  • Method and device for safety monitoring of hybrid electric vehicle

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Embodiment Construction

[0056] In order to make the object, technical solution and advantages of the present invention clearer, the implementation manner of the present invention will be further described in detail below in conjunction with the accompanying drawings.

[0057] figure 1 It is a structural schematic diagram of a hybrid driving system of a hybrid electric vehicle provided by an embodiment of the present invention. see figure 1 , the hybrid drive system includes a first CAN (Controller Area Network, Controller Area Network) chip, a hybrid controller (Hybrid Control Unit, HCU), a second CAN chip, a motor controller, a motor, an engine controller, an engine , Transmission Controller Unit (TCU) and gearbox. Wherein, the first CAN chip is used to realize data interaction between the external controller and the hybrid controller. The hybrid controller includes a main controller, a monitoring chip and a fault judgment module, and data interaction is performed between the main controller and ...

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Abstract

The invention discloses a safety monitoring method and equipment for a hybrid electric vehicle and belongs to the technical field of vehicle safety. The safety monitoring method comprises the following steps: when a safety monitoring problem sent from a monitoring chip is received, responding to the safety monitoring problem, so that the monitoring chip can preliminarily judge whether a master controller is in normal operation based on responding timeliness and accuracy; when a message on preliminarily normal operation sent from the monitoring chip is received, obtaining a vehicle speed and an accelerator pedal depth; secondarily judging whether the master controller is in normal operation based on the vehicle speed and the accelerator pedal depth; when the master controller is in normal operation, determining a wheel-required torque; judging whether a hybrid power driving system is in normal operation based on the wheel-required torque and an actual gear ratio of a gearbox; if the hybrid power driving system is not in normal operation, sending a control signal to a communication chip so as to enable the hybrid electric vehicle to enter into a safety state. According to the safety monitoring method and equipment for the hybrid electric vehicle disclosed by the invention, an entire vehicle and the hybrid power system can enter into a safety sate in the event of an abnormal operation, so that safety of people and the entire vehicle can be ensured.

Description

technical field [0001] The invention relates to the field of automobile safety, in particular to a safety monitoring method and equipment for a hybrid electric automobile. Background technique [0002] Traditional fuel vehicles have the disadvantages of high energy consumption and high emissions. Therefore, hybrid vehicles are becoming more and more popular among users, especially plug-in hybrid vehicles. Plug-in hybrid electric vehicles take into account the advantages of pure electric vehicles and traditional fuel vehicles, and are one of the current trends in the development of hybrid technology. [0003] Plug-in hybrid electric vehicles can be charged by an external power source, and then run in pure electric mode until the vehicle battery is exhausted, then drive in hybrid mode (mainly internal combustion engine), and charge the vehicle battery in due course. Compared with traditional fuel vehicles, the fuel saving rate of plug-in hybrid vehicles in hybrid mode is gene...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): B60W20/10B60W20/50
CPCB60W20/00
Inventor 罗晓杨上东刘艳陈立冲王瑛
Owner 奇瑞新能源汽车股份有限公司
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