Double-control double-redundancy EPB+P gear backup electronic control unit control system

Abstract

The invention discloses a double-control double-redundancy EPB+P gear backup electronic control unit control system. The double-control double-redundancy EPB+P gear backup electronic control unit control system comprises a plug-in which is connected to an interface of an overall vehicle controller; a power conversion module is included and is connected to the plug-in through a power line and a first CAN bus; first and second MCU microcontrollers are included, one of the first and second MCU microcontrollers is connected to the plug-in through a signal line and connected with the power conversion module, and the other one of the first and second MCU microcontrollers is connected to the plug-in through a power line, a P-gear control line, a signal line and a second CAN bus; a slope sensor is included and is integrated into the electronic control unit control system to be connected with the first and second MCU microcontrollers; and left and right motor drive circuit modules are included and are connected with the first and second MCU microcontrollers, and the output ends of the left and right motor drive circuit modules are connected to left and right motors correspondingly to control the left and right motors to work. Through the design of a double-control double-redundancy parking system, dual backup of the EPB function and the backup of the P-gear parking function are achieved.

Description

Technical field [0001] The present invention relates to an electronic control unit module used in an electric vehicle parking brake system, in particular to an electronic control unit module used for electric vehicle EPB double backup and P-speed parking backup, in order to improve the safety and safety of EPB functions An electronic control unit with dual microprocessors and dual redundant circuits designed for the P-speed parking function of electric vehicles. Background technique [0002] As the automotive industry has higher and higher requirements for ISO26262 functional safety, in order to meet product reliability and safety requirements, the development of dual-control dual-redundant EPBs with safety redundancy has become a trend. At the same time, there is no P file for electric vehicles. Mechanical parking function. Vehicles that do not have a P-speed parking lock mechanism cannot meet the requirements of GB21670 and ECER13H. The parking brake needs to be designed with P...

AI Technical Summary

Problems solved by technology

[0002] As the automotive industry has higher and higher requirements for ISO26262 functional safety, in order to meet product reliability and safety requirements, it has become a trend to develop dual-control and dual-redundant EPBs with safety redundancy. At the same time, there is no P file for electric vehicles. Mechanical parking function, vehicles without P gear parking lock mechanism cannot meet the requirements of GB21670 and ECER13H, and the parking brake needs to be designed with P gear redundancy

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