WO2024000190A1 - Système de frein de véhicule et procédé associé - Google Patents

Système de frein de véhicule et procédé associé Download PDF

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Publication number
WO2024000190A1
WO2024000190A1 PCT/CN2022/102020 CN2022102020W WO2024000190A1 WO 2024000190 A1 WO2024000190 A1 WO 2024000190A1 CN 2022102020 W CN2022102020 W CN 2022102020W WO 2024000190 A1 WO2024000190 A1 WO 2024000190A1
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Prior art keywords
emb
ehb
ecu
devices
ecus
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PCT/CN2022/102020
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English (en)
Chinese (zh)
Inventor
靳彪
张永生
张宇
桑士全
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华为技术有限公司
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Priority to PCT/CN2022/102020 priority Critical patent/WO2024000190A1/fr
Publication of WO2024000190A1 publication Critical patent/WO2024000190A1/fr

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    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B60—VEHICLES IN GENERAL
    • B60T—VEHICLE BRAKE CONTROL SYSTEMS OR PARTS THEREOF; BRAKE CONTROL SYSTEMS OR PARTS THEREOF, IN GENERAL; ARRANGEMENT OF BRAKING ELEMENTS ON VEHICLES IN GENERAL; PORTABLE DEVICES FOR PREVENTING UNWANTED MOVEMENT OF VEHICLES; VEHICLE MODIFICATIONS TO FACILITATE COOLING OF BRAKES
    • B60T13/00—Transmitting braking action from initiating means to ultimate brake actuator with power assistance or drive; Brake systems incorporating such transmitting means, e.g. air-pressure brake systems
    • B60T13/10—Transmitting braking action from initiating means to ultimate brake actuator with power assistance or drive; Brake systems incorporating such transmitting means, e.g. air-pressure brake systems with fluid assistance, drive, or release
    • B60T13/66—Electrical control in fluid-pressure brake systems
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B60—VEHICLES IN GENERAL
    • B60T—VEHICLE BRAKE CONTROL SYSTEMS OR PARTS THEREOF; BRAKE CONTROL SYSTEMS OR PARTS THEREOF, IN GENERAL; ARRANGEMENT OF BRAKING ELEMENTS ON VEHICLES IN GENERAL; PORTABLE DEVICES FOR PREVENTING UNWANTED MOVEMENT OF VEHICLES; VEHICLE MODIFICATIONS TO FACILITATE COOLING OF BRAKES
    • B60T13/00—Transmitting braking action from initiating means to ultimate brake actuator with power assistance or drive; Brake systems incorporating such transmitting means, e.g. air-pressure brake systems
    • B60T13/74—Transmitting braking action from initiating means to ultimate brake actuator with power assistance or drive; Brake systems incorporating such transmitting means, e.g. air-pressure brake systems with electrical assistance or drive
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B60—VEHICLES IN GENERAL
    • B60T—VEHICLE BRAKE CONTROL SYSTEMS OR PARTS THEREOF; BRAKE CONTROL SYSTEMS OR PARTS THEREOF, IN GENERAL; ARRANGEMENT OF BRAKING ELEMENTS ON VEHICLES IN GENERAL; PORTABLE DEVICES FOR PREVENTING UNWANTED MOVEMENT OF VEHICLES; VEHICLE MODIFICATIONS TO FACILITATE COOLING OF BRAKES
    • B60T8/00—Arrangements for adjusting wheel-braking force to meet varying vehicular or ground-surface conditions, e.g. limiting or varying distribution of braking force
    • B60T8/17—Using electrical or electronic regulation means to control braking

Definitions

  • the present application relates to the field of vehicle intelligent control technology, and in particular to a vehicle braking system and related methods.
  • the current braking system types of passenger cars mainly include electro-hydraulic brake (EHB) system, hybrid braking system of EHB and electro-mechanical brake (Electro-Mechanical Brake, EMB), and pure EMB system.
  • EHB electro-hydraulic brake
  • EMB electro-mechanical brake
  • pure EMB system pure EMB system.
  • the EHB system has problems such as insufficient pressure building rate and insufficient redundancy; the arrangement of the EMB system on the front axle rim is difficult and costly.
  • the layout is a great challenge to the current mainstream 12V (volt) battery system, and will also cause changes in the power circuits of other controllers.
  • Embodiments of the present application provide a vehicle braking system and related methods.
  • the system is an EHB and EMB hybrid braking system.
  • EHB EHB and EMB hybrid braking system.
  • a vehicle braking system which is characterized in that the system includes an electronic hydraulic braking system EHB and an electromechanical braking system EMB.
  • the EHB is used for front axle braking, and the EMB is used for rear axle braking.
  • the EHB The control unit EHB ECU is communicated with the control unit EMB ECU of the EMB, where,
  • the EHB includes at least two devices, and at least two devices have the same function, and at least the first device among the two devices works;
  • the vehicle braking system is an EHB and EMB hybrid braking system.
  • EHB EHB and EMB hybrid braking system.
  • At least two devices are at least two EHB ECUs, the first device is a first EHB ECU, and the second device is a second EHB ECU.
  • the second EHB ECU when the first EHB ECU is working, the second EHB ECU is used to perform driver backup of the vehicle.
  • At least two EHB ECUs are provided in the EHB included in the vehicle braking system, one of which is used for drive control, and the other EHB ECUs are used for driver backup, so that when used When the EHB ECU controlled by the driver fails, other EHB ECUs can perform subsequent driver control based on the backup driver program.
  • At least two devices are double coils, the first device is a first coil of the double coil, and the second coil is a second coil of the double coil.
  • At least two devices are six-phase motors, the first device is a first three-phase motor among the six-phase motors, and the second device is a second three-phase motor among the six-phase motors.
  • a six-phase motor is installed in the EHB to reduce possible system failures due to insufficient motor redundancy and improve the motor redundancy of the vehicle braking system. , thereby improving the reliability of the vehicle braking system.
  • the dual coil is located on one or more of the following components: the normally open valve of the master cylinder, the normally closed valve of the first electric cylinder, the normally closed valve of the second electric cylinder, and the boost valve of the left front wheel. , the pressure reducing valve for the right front wheel, the pressure reducing valve for the left front wheel, or the pressure reducing valve for the right front wheel.
  • the EMB also includes two EMB mechanical parts.
  • the connection method between the EMB ECU and the EMB mechanical parts includes the following: the EMB ECU is a single EMB ECU, and the single EMB ECU is connected to the two EMB mechanical parts. Connected in a non-integrated manner; or the EMB ECU is two EMB ECUs, and the two EMB ECUs are connected to the two EMB mechanical parts in an integrated manner; or the two EMB ECUs are connected to the two EMB mechanical parts in a non-integrated manner. .
  • a vehicle braking method is provided, which is characterized in that it is applied to a vehicle braking system.
  • the system includes an electronic hydraulic braking system EHB and an electromechanical braking system EMB.
  • the EHB is used for front axle braking
  • the EMB is used for braking the front axle.
  • the EHB control unit EHB ECU is communicated with the EMB control unit EMB ECU, where,
  • the EHB includes at least two devices, and at least two devices have the same function.
  • the first device of the at least two devices works; when the first device fails, the second device of the at least two devices works.
  • At least two devices are at least two EHB ECUs, the first device is a first EHB ECU, and the second device is a second EHB ECU.
  • the second EHB ECU when the first EHB ECU is working, the second EHB ECU is used to perform driver backup of the vehicle.
  • At least two devices are double coils, the first device is a first coil of the double coil, and the second coil is a second coil of the double coil.
  • At least two devices are six-phase motors, the first device is a first three-phase motor among the six-phase motors, and the second device is a second three-phase motor among the six-phase motors.
  • the dual coil is located on one or more of the following components: the normally open valve of the master cylinder, the normally closed valve of the first electric cylinder, the normally closed valve of the second electric cylinder, and the boost valve of the left front wheel. , the pressure reducing valve for the right front wheel, the pressure reducing valve for the left front wheel, or the pressure reducing valve for the right front wheel.
  • the EMB also includes two EMB mechanical parts.
  • the connection method between the EMB ECU and the EMB mechanical parts includes the following: the EMB ECU is a single EMB ECU, and the single EMB ECU is connected to the two EMB mechanical parts. Connected in a non-integrated manner; or the EMB ECU is two EMB ECUs, and the two EMB ECUs are connected to the two EMB mechanical parts in an integrated manner; or the two EMB ECUs are connected to the two EMB mechanical parts in a non-integrated manner. .
  • embodiments of the present application provide a device, which includes a communication interface and a processor.
  • the communication interface is used for the device to communicate with other devices, such as sending and receiving data or signals.
  • the communication interface may be a transceiver, a circuit, a bus, a module, or other types of communication interfaces.
  • the processor is used to call a set of programs, instructions or data to execute the method described in the first aspect above.
  • the apparatus may also include memory for storing programs, instructions or data called by the processor.
  • the memory is coupled to the processor. When the processor executes the instructions or data stored in the memory, the method described in the second aspect or any of the second aspects can be implemented.
  • embodiments of the present application further provide a communication device, characterized in that the communication device includes a processor, a transceiver, a memory, and computer execution instructions stored in the memory and executable on the processor, When the computer execution instructions are executed, the communication device is caused to execute the method in the second aspect or any possible implementation manner of the second aspect.
  • embodiments of the present application further provide a computer-readable storage medium.
  • the computer-readable storage medium stores computer-readable instructions. When the computer-readable instructions are run on a computer, they cause the computer to execute the following steps: Methods in the two aspects or any possible implementation of the second aspect.
  • embodiments of the present application provide a chip system, which includes a processor and may also include a memory, for implementing the method in the above second aspect or any possible implementation manner of the second aspect.
  • the chip system can be composed of chips or include chips and other discrete devices.
  • the chip system also includes a transceiver.
  • embodiments of the present application further provide a computer program product, including instructions that, when run on a computer, cause the computer to execute the method in the first aspect or any of the possible implementations of the first aspect. , or perform the method in the second aspect or any possible implementation manner of the second aspect.
  • Figure 1 is a schematic diagram of a vehicle driving system provided by an embodiment of the present application.
  • FIG. 2 is a schematic diagram of an EHB and EMB hybrid system provided by an embodiment of the present application.
  • FIG. 3 is a schematic diagram of another EHB and EMB hybrid system provided by the embodiment of the present application.
  • FIG. 4 is a schematic diagram of another EHB and EMB hybrid system provided by the embodiment of the present application.
  • Figure 5 is a schematic diagram of a vehicle braking system provided by an embodiment of the present application.
  • FIG. 6 is a schematic diagram of an EMB integration method provided by an embodiment of the present application.
  • Figure 7 is a flow chart of a vehicle braking method provided by an embodiment of the present application.
  • Figure 8 is a schematic structural diagram of a communication device provided by an embodiment of the present application.
  • an embodiment means that a particular feature, structure or characteristic described in connection with the embodiment can be included in at least one embodiment of the present application.
  • the appearances of this phrase in various places in the specification are not necessarily all referring to the same embodiment, nor are separate or alternative embodiments mutually exclusive of other embodiments. Those skilled in the art understand, both explicitly and implicitly, that the embodiments described herein may be combined with other embodiments.
  • “Plural” means two or more. "And/or” describes the relationship between related objects, indicating that there can be three relationships. For example, A and/or B can mean: A exists alone, A and B exist simultaneously, and B exists alone. The character “/” generally indicates that the related objects are in an "or” relationship.
  • EHB system It is a brake-by-wire system. Electronic components are used to replace some mechanical components.
  • the brake pedal is not directly connected to the brake wheel cylinder. Instead, the driver's operation is collected as the control intention, and then the hydraulic actuator completes the braking operation.
  • Braking control is carried out by sensing the driver's pressure on the pedal, rather than by the force felt by the mechanical components. It improves the braking efficiency and avoids the risk of the driver unconsciously reducing the braking force due to vibration caused by the reaction force of the hydro-mechanical braking system.
  • Figure 1 is a schematic diagram of a vehicle drive system provided by an embodiment of the present application. As shown in (a) in Figure 1, it is a schematic diagram of an EHB system. The components are connected through hydraulic brake pipelines. The brake pedal is connected to the hydraulic actuator, and the control intention determined by the brake pedal is conveyed to the hydraulic actuator to complete the braking operation.
  • EMB system It is also a brake-by-wire system. Specifically, electric energy is used as the energy source, the motor drives the braking pad, the energy is transmitted by wires, and the signal is transmitted by data lines to complete the braking process.
  • the advantages of the EMB system include: fewer mechanical connections, smooth load transmission, stable braking performance, high transmission efficiency, and environmental protection.
  • (b) in Figure 1 it is a schematic diagram of an EMB system. The components are connected through wires, and the brake pad is driven by the motor to complete the braking operation.
  • EHB and EMB hybrid system refers to the vehicle using a mixture of EHB and EMB to provide braking control at the same time.
  • different braking methods are used for the front wheels and rear wheels, which can avoid some of the shortcomings of a separate EHB system and a separate EMB system.
  • (c) in Figure 1 it is a schematic diagram of an EHB and EMB hybrid system. The front wheels of the vehicle are braked by EHB and the rear wheels are braked by EMB.
  • EHB and EMB hybrid systems can be configured in a variety of ways.
  • Figure 2 is a schematic diagram of an EHB and EMB hybrid system provided by the embodiment of the present application (the system is provided by patent CN108189824A). As shown in Figure 2, it is a system in which the front end of the vehicle adopts EHB and the rear end of the vehicle adopts EMB.
  • the EHB ECU is connected to the front left (FL) wheel (FL wheel, also referred to as FL) and the front right (front right, FR) wheel (FR wheel, also referred to as FR), and the EMB is connected to the left rear (FL wheel).
  • EHB and EMB can back up each other and support autonomous driving levels above L3.
  • EMB's mechanical and electronic control unit (ECU) enables independent control of EMB.
  • the coil, motor, and ECU of the EHB fail, only the EMB provides backup, which has low reliability.
  • FIG 3 is a schematic diagram of another EHB and EMB hybrid system provided by the embodiment of the present application (this system is provided by patent CN102029915A). As shown in Figure 3, it also uses EHB at the front end of the vehicle and EMB at the rear end of the vehicle. Braking system solution, the central ECU, also known as EHB ECU, is used for main control. Different from the previous solution, this solution separates the EMB ECU and the mechanical parts of the EMB from each other to avoid the impact of thermal load and road vibration on the ECU. But similarly, when the EHB's coil, motor, and ECU fail, only the EMB provides backup; when the EMB ECU fails, only the front axle hydraulic pressure provides backup.
  • FIG 4 is a schematic diagram of another EHB and EMB hybrid system provided by the embodiment of the present application.
  • the front axle uses 2 Independent electro-hydraulic braking unit (implemented by connecting two hydraulic actuators respectively to the brake control unit), the mechanical parts of the EMB used in the rear axle are separated from its ECU (the brake control unit 2 represents the EMB ECU), avoiding thermal load and the impact of road vibration on the ECU. Additionally, EHB and EMB back up each other.
  • EHB and EMB back up each other.
  • a vehicle braking system which includes an electronic hydraulic braking system EHB and an electromechanical braking system EMB (an EHB and EMB hybrid braking system).
  • the EHB is connected to FL and FR. Braking on the front axle.
  • EMB is connected to RL and RR for rear axle braking.
  • the EHB control unit EHB ECU communicates with the EMB control unit EMB ECU, for example through the controller area network (Controller Area Network, CAN) bus.
  • the EHB ECU includes coils and motors, among which,
  • the EHB includes at least two devices, and at least two devices have the same function.
  • the first device of the at least two devices works; when the first device fails, the second device of at least two devices works.
  • the hybrid braking system of EHB and EMB has the problem of insufficient redundancy. Therefore, at least two devices with identical functions are set up in the EHB to achieve complete redundancy of the device. When at least two devices are faultless, one of the devices can be used to work normally, and when the device fails, the other device can replace the faulty device for full redundancy. Can improve system reliability.
  • At least two devices in the EHB can be at least two EHB ECUs.
  • the at least two EHB ECUs can be multiple EHB ECUs that are set up separately but connected by communication (wired or wireless), or multiple EHB ECUs can be integrated in the same injection molded part (housing).
  • the at least two EHB ECUs include the first EHB ECU and the second EHB ECU, which correspond to EHB ECU A and EHB ECU B in Figure 5.
  • the first EHB ECU (can be any one of at least two EHB ECUs) is used to drive the vehicle under fault-free conditions and complete the driving function of the EHB in the system.
  • the EHB ECU may malfunction resulting in drive control failure.
  • the microcontroller unit MCU
  • valve driver coil
  • it may cause EHB ECU drive control failed.
  • the second EHB ECU can be used for drive control.
  • the second EHB ECU is used for driver backup of the vehicle.
  • the drive control can be continued without any obstacles based on the drive control of the first EHB ECU. Reduce or eliminate the possible impact of the driver control failure of the first EHB ECU on use.
  • EHB ECUs also include more EHB ECUs
  • Driver backup can be performed on all ECUs except the first EHB ECU. For example, if a third EHB ECU is also set up, when the first EHB ECU and the second EHB ECU perform drive control, the third EHB ECU will perform driver backup. If the second EHB ECU fails, the third EHB ECU can own backup information for subsequent drive control. If there are more EHB ECUs set up in the system, the working principle will be deduced in the same way and will not be described again here.
  • At least two EHB ECUs are provided in the EHB included in the vehicle braking system, one of which is used for drive control, and the other EHB ECUs are used for driver backup, so that when used When the EHB ECU controlled by the driver fails, other EHB ECUs can perform subsequent driver control based on the backup driver program.
  • Improve the redundancy of the vehicle braking system thereby improving the reliability of the vehicle braking system.
  • At least two devices are double coils, the first device is the first coil of the double coil, and the second coil is the second coil of the double coil.
  • the vehicle system includes the oil bottle, single-chamber master cylinder (MastCyld), test isolation valve (Test Separation Valve, TSV), pedal travel sensor (Pedal Travel Sensor, PTS) and brake pedal (Brake pedal).
  • the main cylinder unit composed of.
  • the oil bottle is connected to the TSV
  • the TSV is connected to the single-cavity master cylinder
  • the single-cavity master cylinder is connected to the brake pedal
  • a PTS is also connected between the single-cavity master cylinder and the brake pedal.
  • the vehicle system also includes a pressure building unit.
  • the pressure building unit includes a motor position sensor (Motor Position Sensor, MPS), a permanent magnet synchronous motor (permanent-magnet synchronous motor, PMSM), and a brake circuit pressure sensor (Brake Circuit Pressure Sensor, BCPS). , electric cylinder normally closed valve (Plunger Normal Closed valve, PNC), master cylinder normally open valve (Master Cylinder Normal Open valve, MC_NO), pedal simulation valve (Pedal Simulation Valve, PSV), boost valve (Isolation value, ISO) , pressure reducing valve (Dump value, Dump), master cylinder pressure sensor (Master Cylinder Pressure Sensor, MCPS), and pedal simulator.
  • MPS Motor Position Sensor
  • PMSM permanent magnet synchronous motor
  • BCPS brake circuit pressure sensor
  • the piston is connected to the oil pot, PMSM, and PNC (including PNC1 and PNC2), and BCPS is also connected between the piston and PNC.
  • PNC2 is connected to the boost valve (ISO_FL) of the left front wheel
  • PNC1 is connected to the boost valve (ISO_FR) of the right front wheel.
  • the other end of ISO_FL is connected to FL
  • the other end of ISO_FR is connected to FR.
  • FL is also connected to the pressure reducing valve Dump_FL of the left front wheel
  • FR is also connected to the pressure reducing valve Dump_FR of the right front wheel
  • the other end of Dump_FL and Dump_FL is connected to the oil tank.
  • PNC1 and PNC2 are connected to MC_NO
  • the other end of MC_NO is connected to MCPS and PSV
  • the other end of MCPS is connected to the single-chamber master cylinder
  • the other end of PSV is connected to the pedal simulator.
  • the pressure building unit includes several valves, and the valves include coils.
  • the coils on the valves in the embodiment of the present application may be double coils, including the coils on all valves being double coils, or the coils on some valves being double coils.
  • the component including the bidirectional circle in the pressure building unit (that is, in the vehicle system) may be one or more of the following: MC_NO, PNC1, PNC2, ISO_FR, ISO_FL, Dump_FL, or Dump_FR.
  • a dual coil is set on the valve, and usually the first coil of the dual coil is energized to work. When the first coil fails, the second coil is energized and works. This can reduce system failures caused by insufficient coil redundancy in the vehicle braking system and improve the reliability of the vehicle system.
  • At least two devices are six-phase motors
  • the first device is a first three-phase motor among the six-phase motors
  • the second device is a second three-phase motor among the six-phase motors.
  • the PMSM in Figure 5 can be a six-phase motor.
  • a six-phase motor actually consists of two three-phase motors, including a first three-phase motor and a second three-phase motor.
  • the electrical energy conversion is provided by the first three-phase motor.
  • the second three-phase motor can work to provide subsequent power conversion. This can reduce system failures caused by insufficient motor redundancy in the vehicle braking system and improve the reliability of the vehicle system.
  • the at least two devices in the embodiment of the present application may include one or more of at least two EHB-ECUs, dual coils, and six-phase motors. That is to say, the vehicle system can only include at least two EHB-ECUs, dual coils or six-phase motors, or it can include two EHB-ECUs and dual coils, and both EHB-ECUs and six-phase motors. Includes both dual-coil and six-phase motors, or EHB-ECU, dual-coil and six-phase motors. More redundant equipment can better improve the reliability of the vehicle braking system. But too much redundant equipment may also increase costs. Therefore, redundant equipment can be added as needed.
  • the EHB-ECU is also a component that constitutes the aforementioned pressure building unit. As shown in Figure 5, the EHB ECU and other components of the pressure building unit can be physically connected. In addition, the PTS in the master cylinder unit can output two signals, one of which is connected to the EMB ECU and the other to the EHB-ECU.
  • EHBECU A dominates basic braking, dynamics functions, value-added functions, and parking brakes.
  • EHB ECU B performs backup of the driver program.
  • EMB ECU serves as an execution unit for execution and feedback control information. When EHBECU A fails, EHB ECU B can perform subsequent driving based on the backup driver, and the working status of EMB ECU remains unchanged.
  • EMB ECU can still identify the driver's braking awareness through the signal connection with the PTS, achieving backup of braking intention identification.
  • the EHB braking system can also complete the full functional backup of the front axle's basic braking, dynamic functions, and value-added functions.
  • the EMB also includes two EMB mechanical parts.
  • the connection methods between the EMB ECU and the EMB mechanical parts include the following: the EMB ECU is a single EMB ECU, and the single EMB ECU and the two EMB mechanical parts are non-integrated. or the EMB ECU is two EMB ECUs, and the two EMB ECUs are connected to the two EMB mechanical parts in an integrated manner; or the two EMB ECUs are connected to the two EMB mechanical parts in a non-integrated manner.
  • the vehicle braking system includes an EMB
  • the EMB includes EMB mechanical parts, which are used to connect with the EMB ECU to complete the EMB braking process.
  • the EMB provided by the embodiment of the present application may include two EMB mechanical parts.
  • the connection methods between EMB mechanical parts and EMB ECU include any of the following three types:
  • FIG. 6 is a schematic diagram of an EMB integration method provided by an embodiment of the present application.
  • the EMB includes a single EMB ECU, and because the EMB is used for subsequent Axle braking, so this EMB ECU is connected in a non-integrated manner with the left rear wheel RL EMB mechanical part and the right rear wheel RR EMB mechanical part.
  • EMB mechanical parts can be composed of MPS, brake pedal position sensor (brake pedal position sensor, BBPS), caliper (caliper), PMSM and other components.
  • Two EMB ECUs are connected to two EMB mechanical parts in an integrated manner. As shown in (b) in Figure 6, among the two EMB ECUs, one EMB ECU is connected to the RL EMB mechanical parts in an integrated manner, and the other EMB ECU is connected to the RR EMB mechanical parts in an integrated manner.
  • the two EMB ECUs are connected to the two EMB mechanical parts in a non-integrated manner. As shown in (c) in Figure 6, among the two EMB ECUs, one EMB ECU is connected to the RL EMB mechanical parts in a non-integrated manner, and the other EMB ECU is connected to the RR EMB mechanical parts in a non-integrated manner.
  • EMB ECU and EMB mechanical parts can also be integrated in other ways, which are not specifically limited in the embodiments of this application.
  • EMB ECU can be developed independently or can be compatible with other controllers, which can reduce system layout costs.
  • a vehicle braking method is provided in an embodiment of the present application.
  • the method is applied to a vehicle braking system.
  • the system includes an electronic hydraulic braking system EHB and an electromechanical braking system EMB.
  • EHB is used for front Axle braking
  • EMB is used for rear axle braking
  • the control unit EHB ECU of EHB is communicated with the control unit EMB ECU of EMB, where,
  • the EHB includes at least two devices, and at least two devices have the same functions and work through the first device of at least two devices;
  • the vehicle braking system is an EHB and EMB hybrid braking system.
  • EHB EHB and EMB hybrid braking system.
  • At least two devices are at least two EHB ECUs, the first device is a first EHB ECU, and the second device is a second EHB ECU.
  • the second EHB ECU is used for driver backup of the vehicle.
  • At least two devices are double coils, the first device is a first coil of the double coil, and the second coil is a second coil of the double coil.
  • At least two devices are six-phase motors
  • the first device is a first three-phase motor among the six-phase motors
  • the second device is a second three-phase motor among the six-phase motors.
  • the dual coil is located on one or more of the following components: master cylinder normally open valve MC_NO, first electric cylinder normally closed valve PNC, second PNC, left front wheel boost valve, right front wheel Pressure reducing valve for the left front wheel, or pressure reducing valve for the right front wheel.
  • the EMB also includes two EMB mechanical parts.
  • the connection method between the EMB ECU and the EMB mechanical parts includes one of the following: the EMB ECU is a single EMB ECU, and the single EMB ECU and the two EMB mechanical parts are connected in a different way. Connected in an integrated manner; or the EMB ECU is two EMB ECUs, and the two EMB ECUs are connected to the two EMB mechanical parts in an integrated manner; or the two EMB ECUs are connected to the two EMB mechanical parts in a non-integrated manner.
  • FIG. 8 shows a schematic structural diagram of a communication device in an embodiment of the present application.
  • the structure of the communication device may refer to the structure shown in FIG. 8 .
  • the communication device 900 includes: a processor 111 and a transceiver 112, and the processor 111 and the transceiver 112 are electrically coupled;
  • the processor 111 is configured to execute some or all of the computer program instructions in the memory. When the part or all of the computer program instructions are executed, the device performs the method described in any of the above embodiments.
  • the transceiver 112 is used to communicate with other devices.
  • the memory 113 for storing computer program instructions.
  • the memory 113 (memory 1) is located in the device, and the memory 113 (memory 2) is integrated with the processor 111.
  • the memory 113 (memory 3) is located outside the device.
  • the communication device 900 shown in FIG. 8 may be a chip or a circuit.
  • it may be a chip or circuit provided in a terminal device or a communication device.
  • the above-mentioned transceiver 112 may also be a communication interface.
  • a transceiver includes a receiver and a transmitter.
  • the communication device 900 may also include a bus system.
  • the processor 111 the memory 113, and the transceiver 112 are connected through a bus system.
  • the processor 111 is used to execute the instructions stored in the memory 113 to control the transceiver to receive signals and send signals to complete the vehicle system in the implementation method involved in this application. moving steps.
  • the memory 113 may be integrated in the processor 111 or may be provided separately from the processor 111 .
  • the function of the transceiver 112 may be implemented through a transceiver circuit or a dedicated transceiver chip.
  • the processor 111 may be implemented by a dedicated processing chip, a processing circuit, a processor or a general-purpose chip.
  • the processor can be a central processing unit (CPU), a network processor (NP) or a combination of CPU and NP.
  • the processor may further include a hardware chip or other general-purpose processor.
  • the above-mentioned hardware chip can be an application-specific integrated circuit (ASIC), a programmable logic device (PLD) or a combination thereof.
  • ASIC application-specific integrated circuit
  • PLD programmable logic device
  • the above-mentioned PLD can be a complex programmable logic device (CPLD), a field-programmable gate array (FPGA), a general array logic (GAL) and other programmable logic devices , discrete gate or transistor logic devices, discrete hardware components, etc. or any combination thereof.
  • CPLD complex programmable logic device
  • FPGA field-programmable gate array
  • GAL general array logic
  • a general-purpose processor may be a microprocessor or the processor may be any conventional processor, etc.
  • non-volatile memory may be volatile memory or non-volatile memory, or may include both volatile and non-volatile memory.
  • non-volatile memory can be read-only memory (ROM), programmable ROM (PROM), erasable programmable read-only memory (erasable PROM, EPROM), electrically removable memory. Erase electrically programmable read-only memory (EPROM, EEPROM) or flash memory.
  • Volatile memory may be Random Access Memory (RAM), which is used as an external cache.
  • RAM static random access memory
  • dynamic RAM dynamic random access memory
  • synchronous dynamic random access memory synchronous DRAM, SDRAM
  • double data rate synchronous dynamic random access memory double data rate SDRAM, DDR SDRAM
  • enhanced synchronous dynamic random access memory Enhanced SDRAM, ESDRAM
  • synchronous link dynamic random access memory direct rambus RAM, DR RAM
  • direct rambus RAM direct rambus RAM
  • Embodiments of the present application provide a computer-readable storage medium that stores a computer program.
  • the computer program is used to execute the vehicle braking method in the above embodiments.
  • Embodiments of the present application provide a computer program product containing instructions that, when run on a computer, cause the computer to execute the vehicle braking method in the above embodiment.
  • the size of the sequence numbers of the above-mentioned processes does not mean the order of execution.
  • the execution order of each process should be determined by its functions and internal logic, and should not be used in the embodiments of the present application.
  • the implementation process constitutes any limitation.
  • the disclosed systems, devices and methods can be implemented in other ways.
  • the device embodiments described above are only illustrative.
  • the division of modules is only a logical function division. In actual implementation, there may be other division methods.
  • multiple modules or components may be combined or integrated. to another system, or some features can be ignored, or not implemented.
  • the coupling or direct coupling or communication connection between each other shown or discussed may be through some interfaces, indirect coupling or communication connection of devices or modules, and may be in electrical, mechanical or other forms.
  • Modules described as separate components may or may not be physically separated, and components shown as modules may or may not be physical modules, that is, they may be located in one place, or they may be distributed to multiple network modules. Some or all of the modules can be selected according to actual needs to achieve the purpose of the solution of this embodiment.
  • each functional module in each embodiment of the present application can be integrated into one processing module, or each module can exist physically alone, or two or more modules can be integrated into one module.
  • the computer software product is stored in a storage medium, including Several instructions are used to cause a computer device (which may be a personal computer, a server, or a network device, etc.) to execute all or part of the steps of the methods of various embodiments of the present application.
  • the aforementioned storage media include: U disk, mobile hard disk, read-only memory (ROM), random access memory (RAM), magnetic disk or optical disk and other media that can store program code. .

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  • Engineering & Computer Science (AREA)
  • Transportation (AREA)
  • Mechanical Engineering (AREA)
  • Valves And Accessory Devices For Braking Systems (AREA)

Abstract

Sont divulgués dans la présente demande un système de frein de véhicule et un procédé associé. Le système comprend un système de frein hydraulique électronique (EHB) et un système de frein électronique-mécanique (EMB), l'EHB étant utilisé pour un frein d'essieu avant, l'EMB étant utilisé pour un frein d'essieu arrière, et une unité de commande électronique EHB (ECU EHB) étant en connexion de communication avec une unité de commande électronique EMB (ECU EMB), l'EHB comprenant au moins deux dispositifs, et les au moins deux dispositifs ayant la même fonction ; le premier dispositif des au moins deux dispositifs fonctionnant ; et lorsque le premier dispositif échoue, le second dispositif des au moins deux dispositifs fonctionnant. Selon les modes de réalisation de la présente demande, au moins deux dispositifs ayant la même fonction sont fournis dans un EHB d'un système de frein hybride EHB et EMB, de façon à augmenter la redondance du système, ce qui permet d'améliorer la fiabilité du système.
PCT/CN2022/102020 2022-06-28 2022-06-28 Système de frein de véhicule et procédé associé WO2024000190A1 (fr)

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Citations (7)

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Publication number Priority date Publication date Assignee Title
US20080021623A1 (en) * 2004-02-27 2008-01-24 Daimlerchrysler Ag Redundant Brake Control System for a Vehicle
CN102490711A (zh) * 2011-11-30 2012-06-13 清华大学 一种使用隔离阀的分布式电子液压制动系统
CN207860163U (zh) * 2018-02-06 2018-09-14 吉林大学 四轮压力独立控制的复合线控制动系统
US20210237698A1 (en) * 2020-02-04 2021-08-05 Nio Usa, Inc. Redundant braking system for a motor vehicle
CN113602242A (zh) * 2021-08-30 2021-11-05 合肥工业大学 电子液压-电子机械的混合式汽车线控制动控制系统
CN114352663A (zh) * 2022-01-21 2022-04-15 苏州科美澄汽车科技有限公司 一种轴间分布式复合线控制动系统
WO2022077195A1 (fr) * 2020-10-13 2022-04-21 华为技术有限公司 Procédé de freinage électromécanique et dispositif de freinage électromécanique

Patent Citations (7)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US20080021623A1 (en) * 2004-02-27 2008-01-24 Daimlerchrysler Ag Redundant Brake Control System for a Vehicle
CN102490711A (zh) * 2011-11-30 2012-06-13 清华大学 一种使用隔离阀的分布式电子液压制动系统
CN207860163U (zh) * 2018-02-06 2018-09-14 吉林大学 四轮压力独立控制的复合线控制动系统
US20210237698A1 (en) * 2020-02-04 2021-08-05 Nio Usa, Inc. Redundant braking system for a motor vehicle
WO2022077195A1 (fr) * 2020-10-13 2022-04-21 华为技术有限公司 Procédé de freinage électromécanique et dispositif de freinage électromécanique
CN113602242A (zh) * 2021-08-30 2021-11-05 合肥工业大学 电子液压-电子机械的混合式汽车线控制动控制系统
CN114352663A (zh) * 2022-01-21 2022-04-15 苏州科美澄汽车科技有限公司 一种轴间分布式复合线控制动系统

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