CN215042609U

CN215042609U - Integrated hydraulic electronic brake controller

Info

Publication number: CN215042609U
Application number: CN202121565750.5U
Authority: CN
Inventors: 程毅; 刘海前; 王磊; 徐诚
Original assignee: Wuhan Ruili Corders Automotive Electronics Co ltd
Current assignee: Wuhan Ruili Corders Automotive Electronics Co ltd
Priority date: 2021-07-09
Filing date: 2021-07-09
Publication date: 2021-12-07
Anticipated expiration: 2031-07-09

Abstract

The utility model discloses an integrated form hydraulic pressure electronic brake controller relating to automotive electronics braking technical field. The integrated hydraulic electronic brake controller mainly comprises an input power supply management module, an ESC system safety and auxiliary logic management module, a motor control module, an electromagnetic valve control module, an auxiliary power supply system management module, an EPB caliper motor control module, a parking key management module, an MCU logic management control module and a communication module, and ESC and EPB functions are integrated on one controller, so that the installation space can be saved, the hardware cost can be reduced, and the safety of braking of the whole vehicle is improved.

Description

Integrated hydraulic electronic brake controller

Technical Field

The utility model relates to an automotive electronics braking technical field especially relates to an integrated form hydraulic pressure electronic brake controller.

Background

With the rapid development of the automobile industry, more and more electronic control systems are applied to a vehicle system, an automatic transmission automobile plays a great role in relieving the fatigue of drivers, the automatic transmission automobile is more and more accepted and loved by more people, and meanwhile, higher requirements on the reliability, the safety and the comfort of the automobile are also provided by people. When the performance requirement of the vehicle is higher and higher, how to utilize limited vehicle space, integrate more and more control unit into, more and more control unit will increase to the energy consumption of storage battery simultaneously certainly, also is the test to the battery consumption of vehicle under the quiescent condition, therefore the automobile body is light can quantify, integrate and also more and more urgent.

The traditional EPB controller is independent of the ESC controller, if the functional control unit of the EPB is completely integrated into the ESC control unit, the ESC and the EPB can cooperate quickly, and the parking brake effect is further improved in the traditional independent control mode; meanwhile, the two original control units are integrated into one control unit, so that the integration degree is higher, the size is smaller than that of the two control units, the cost is lower, and the installation cost of the vehicle is reduced.

Under the flameout condition of a vehicle, the electric quantity of the storage battery consumed by the two relatively independent controllers is large, the independent control units are integrated together, the dark current of the integrated control unit is equivalent to that of the original single controller and is even smaller, the electric quantity consumption of the storage battery is reduced on the whole, the long-distance transportation is facilitated, the power shortage of the storage battery is prevented, and the storage battery is well protected.

Disclosure of Invention

The utility model provides a can save installation cost and space, stand-by power consumption and low integrated EPB, ESC's automotive electronics braking system again.

The utility model adopts the technical proposal that: an integrated hydraulic electronic brake controller comprises an input power supply management module, an ESC system safety and auxiliary logic management module, a motor control module, an electromagnetic valve control module, an auxiliary power supply system management module, an EPB caliper motor control module, a parking key management module, an MCU logic management control module and a communication module; the input power management module comprises an EMI filter circuit, a total power end protection circuit, a small-signal power management circuit, a large-current power management circuit, a small-signal power input protection circuit, a filter energy storage circuit and a wake-up and low-power consumption control circuit, and provides power input and system power supply protection and module power supply distribution and isolation for the whole controller system; the ESC system safety and auxiliary logic management module is directly connected with the motor control module and the electromagnetic valve control module; the auxiliary power supply system management module comprises an auxiliary power supply management SBC chip and a peripheral auxiliary circuit, and provides a 12V power supply for the parking key management module; the MCU logic management control module comprises a main MCU and an auxiliary MCU, the main MCU and the auxiliary MCU are connected through a serial port, and the MCU logic management control module is connected with the ESC system safety and auxiliary logic management module and the EPB caliper motor control module through an SPI; the EPB caliper motor control module comprises an H bridge and an H bridge driving circuit; the communication module comprises a CAN line and a K line, and is connected with the auxiliary power supply system management module and the ESC system safety and auxiliary logic management module. Preferably, the MCU logic management control module main MCU chip adopts an English flying ice XC2000 series; the ESC system security and auxiliary logic management module adopts an integrated chip Enzhipu SC900 series.

Compared with the prior art, the beneficial effects of the utility model are that:

1. ESC and EPB controller integration are in the same place, reduce the quantity of controller on the vehicle, save installation space, reduce the hardware cost, effectively accelerate ESC and EPB function's integration and linkage.

2. In the flameout state of the vehicle, the dark current generated by the controller is smaller than that generated by using two independent controllers, and the consumption of the electric quantity of the storage battery in the transportation process is reduced.

3. The power supply of the ESC motor, the power supply of the EPB caliper motor and the power supply of the ESC electromagnetic valve are relatively independent, the high-side switch control can be independently realized respectively, the corresponding high-side switch can be closed when any one of the high-side switch, the functions of other parts are reserved, and the controller cannot be completely disabled.

4. The power supply of the motor and the electromagnetic valve can be controlled, and when the motor or the electromagnetic valve breaks down, the motor and the electromagnetic valve can be ensured to be in a complete power-off state, so that potential safety hazards are reduced.

5. The design of dual power supply is adopted, so that when the power supply of a main power supply fails, an auxiliary power supply can be started to supply power, the system can work normally within a period of time, and the safety of a vehicle is ensured; meanwhile, the storage record of the fault information is ensured, and convenience is provided for subsequent fault analysis.

6. The MCU adopts a double-MCU chip design, when the main MCU fails seriously and can not be recovered, the auxiliary MCU is started to carry out emergency response, and the system is prevented from completely failing.

Drawings

Fig. 1 is a schematic block diagram of a controller according to the present invention;

fig. 2 is a block diagram of an input power management module in the controller of the present invention;

fig. 3 is a basic functional diagram of the safety and auxiliary logic management module of the ESC system in the controller of the present invention;

fig. 4 is a block diagram of a motor control module in the controller of the present invention;

fig. 5 is a block diagram of a solenoid valve control module in the controller of the present invention;

fig. 6 is a block diagram of a control module of the EPB caliper motor in the controller of the present invention.

Detailed Description

The present invention will be further explained with reference to the accompanying drawings.

As shown in fig. 1, the utility model provides an integrated form hydraulic pressure electronic brake controller contains input power management module, ESC system safety and supplementary logic management module, motor control module, solenoid valve control module, auxiliary power system management module, EPB calliper motor control module, parking button management module, MCU logic management control module, communication module.

As shown in fig. 2, the input power management module is composed of an EMI filter circuit, a total power supply end protection circuit, a small-signal power management circuit, a large-current power management circuit, a small-signal power input protection circuit, a filter energy storage circuit, and a wake-up and low-power consumption control circuit. The input power management module is mainly used for managing and distributing and controlling the power supply of the whole system, providing independent 12V system power supply for the EPB caliper motor control module, the auxiliary power system management module, the ESC system safety and auxiliary logic management module, the motor control module and the electromagnetic valve control module, ensuring that the actions of other modules do not influence the operation of other modules and ensuring the stability and reliability of the system.

Fig. 3 is a basic functional diagram of an ESC system safety and auxiliary logic management module, which mainly comprises an integrated chip SC900719, and CAN provide a 3.3V/5V power supply for the whole system, CAN provide CAN communication control, K-line communication control, motor high-side driving, solenoid valve high-side driving and low-side control, alarm lamp control, HALL wheel speed signal processing, and the ESC system safety and auxiliary logic management module simultaneously receives an SPI signal of an MCU, controls the motor control module and the solenoid valve control module, and controls and adjusts wheel cylinder pressure by controlling the cooperative action of the solenoid valve and the motor.

The auxiliary power system management module mainly comprises an auxiliary power management SBC chip and other peripheral auxiliary circuits, and can realize the function of a watchdog and the safety redundancy of the system. Under the condition that the system is in a sleep state, the module can supply power to the keys in a pulse voltage output mode, and the relative power consumption is reduced compared with that of continuous power supply due to pulse output; when CAN communication of the ESC system safety and auxiliary logic management module fails, the system CAN realize CAN communication through the module; the module can also provide required 3.3V and 5V power supplies for the system MCU.

As shown in fig. 6, the EPB caliper motor control module includes an H-bridge and an H-bridge driving circuit; EPB calliper motor control module can provide the 5V power supply by integrated chip, also can supply power through auxiliary power source management module, and mutual isolation between the two power supplies, and all can carry out turn-off control through MCU.

The utility model provides an in the scheme, all mains operated are allocated by two power supply pins jointly, correspond BVAT12V and MOT12V respectively, and wherein BAT12V prevents reverse circuit through N-MOSFET and supplies power for one of them EPB calliper motor and solenoid valve, and MOT12V supplies power for ESC motor and second way EPB motor. The first path of EPB card front motor and the electromagnetic valve are commonly used for preventing the reverse N-MOSFET, and the reverse N-MOSFET can be controlled to be completely conducted through the ESC system safety and auxiliary logic management module and can also be controlled to be completely conducted through the EPB caliper motor control module. The solenoid valve and the ESC motor are controlled by independent N-MOSFETs on their high sides, and the high side of the caliper motor is provided by an H-bridge.

MCU logic management control module contains two MCU chips, divide into main MCU and supplementary MCU, through serial ports connection between main MCU and the supplementary MCU, main MCU and supplementary MCU all pass through the SPI with ESC system safety and supplementary logic management module and EPB calliper motor control module and be connected, SPI mutual isolation between the two, mutual noninterference. And the auxiliary power system management module is connected with the auxiliary MCU through the SPI.

The CAN communication module comprises two paths of CAN communication and one path of K line communication, and CAN data transmission CAN be completed by the CAN communication through the communication of the auxiliary power system management module or the ESC system safety and auxiliary logic management module and the MCU logic management control module.

The system EPB key is provided with a 12V power supply by the auxiliary power supply system management module, after the system is in a dormant state, the auxiliary power supply system management module provides 12V pulse output, a key signal can wake up the auxiliary power supply system management module and the ESC system safety and logic management module through the EPB key signal processing module, 5V and 3.3V voltages are output to electrify the MCU, and the system enters a normal working state from the dormant state.

The above description is only for the specific embodiments of the present invention, but the protection scope of the present invention is not limited thereto, and any person skilled in the art can easily think of the changes or substitutions within the technical scope of the present invention, and all should be covered within the protection scope of the present invention. Therefore, the protection scope of the present invention shall be subject to the protection scope of the claims.

Claims

1. An integrated hydraulic electronic brake controller, characterized by: the intelligent electronic control system comprises an input power supply management module, an ESC system safety and auxiliary logic management module, a motor control module, an electromagnetic valve control module, an auxiliary power supply system management module, an EPB caliper motor control module, a parking key management module, an MCU logic management control module and a communication module; the input power management module provides power input and system power supply protection and module power supply distribution and isolation for the whole controller system; the ESC system safety and auxiliary logic management module is directly connected with the motor control module and the electromagnetic valve control module; the auxiliary power supply system management module provides a 12V power supply for the parking key management module; the MCU logic management control module is connected with the ESC system safety and auxiliary logic management module and the EPB caliper motor control module through the SPI; the communication module is connected with the auxiliary power system management module and the ESC system safety and auxiliary logic management module.

2. The integrated hydraulic electronic brake controller of claim 1, wherein: the auxiliary power supply system management module comprises an auxiliary power supply management SBC chip and a peripheral auxiliary circuit; the input power management module comprises an EMI filter circuit, a total power end protection circuit, a small-signal power management circuit, a large-current power management circuit, a small-signal power input protection circuit, a filter energy storage circuit and a wake-up and low-power consumption control circuit; the MCU logic management control module comprises a main MCU and an auxiliary MCU, and the main MCU and the auxiliary MCU are connected through a serial port; the EPB caliper motor control module comprises an H bridge and an H bridge driving circuit.

3. The integrated hydraulic electronic brake controller according to claim 1 or 2, wherein: the communication module comprises a CAN line and a K line.

4. The integrated hydraulic electronic brake controller of claim 2, wherein: the MCU logic management control module adopts an English flying slush XC2000 series as a main MCU chip; the ESC system security and auxiliary logic management module adopts an integrated chip Enzhipu SC900 series.