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Modular redundancy control electronic parking brake system and brake method

A technology of electronic parking brake and redundant control, which is applied in the direction of brake control system, brake transmission device, brake, etc., can solve the problem of high hardware requirements of the two controllers, and improve the versatility and portability , high security, and the effect of reducing the occupied space

Inactive Publication Date: 2021-02-26
DONGFENG MOTOR CORP HUBEI
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Problems solved by technology

This prior art also needs to integrate the EPB control software and hardware into the two controllers respectively, which has higher requirements on the hardware of the two controllers

Method used

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  • Modular redundancy control electronic parking brake system and brake method

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Embodiment Construction

[0034] The present invention will be further described in detail below in conjunction with the accompanying drawings and specific embodiments.

[0035] see figure 1 , a modular redundant control electronic parking brake system according to an embodiment of the present invention, including a battery 1, a left motor gear control module MGCU-L 7, a left caliper 6, a right motor gear control module MGCU-R 9, a right Caliper 8, CAN bus 10, electronic stability system ESP 15, vehicle control unit VCU14 or electric booster ECU, EPB switch 16.

[0036] The motor gear control module MGCU7 / 8 is integrated by the micro control unit MCU2, the H bridge 4 and the executive motor 5 to form a module, which is directly installed on the caliper 6, and the MGCU7 / 8 controls the forward rotation, reverse rotation or stop of the executive motor 5 , thereby controlling the caliper 6 to realize clamping parking or release.

[0037] There is PBC software 3 in the micro control unit MCU2, and the MCU...

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Abstract

The invention provides a modular redundancy control electronic parking brake system and brake method, a backup parking braking system is provided, a left actuator and a right actuator are controlled through two control circuits respectively, and independent control over the left parking system and the right parking system is achieved; when one path fails, the other control line is used for controlling the vehicle to park, redundancy control over vehicle parking is achieved, and parking safety of the vehicle is further guaranteed. According to the invention, the MCU, the H bridge and the execution motor are integrated into one module, so that the execution mechanism is modularized, and the universality and transportability are improved; in the electronic and electrical architecture of the whole vehicle, EPB main control software can be randomly integrated in two controllers and is not limited by controller hardware. A caliper control unit is integrated on the motor, malicious unlockingand parking caused by direct energization of the MGU are prevented, the anti-theft function and higher safety are achieved, and compared with an existing executing mechanism MGU, a vehicle anti-theftlock mechanism is omitted, and the cost is reduced.

Description

technical field [0001] The invention belongs to the technical field of automobile braking, and in particular relates to a modular redundant control electronic parking braking system and a braking method. Background technique [0002] At present, in passenger cars, the actuator of EPB (Electrical Park Brake, electronic parking brake system) generally uses electronic caliper (MGU, Motor Gear Unit, motor gear mechanism integrated caliper) parking actuator, electronic parking control The software includes EPB main control software, PBC (Park Brake Control software), and hardware (MCU, H bridge, etc.) all integrated ESP (Electronic Stability Program, electronic stability system) ECU (Electronic Control Unit electronic control unit) ), in the event that the ESP ECU control loop fails, if there is no other system redundantly controlling the parking brake, it will cause risks such as parking slides. [0003] Under the development trend of automobile electrification, intelligence, a...

Claims

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Application Information

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IPC IPC(8): B60T13/74
CPCB60T13/741B60T2270/402
Inventor 闫寒郭顺李泽彬帅苏洋赵保华
Owner DONGFENG MOTOR CORP HUBEI
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