CN117002461A

CN117002461A - Brake control system and brake control method for single-side EPB redundancy

Info

Publication number: CN117002461A
Application number: CN202311161036.3A
Authority: CN
Inventors: 惠志峰; 吕伟平
Original assignee: Suzhou Likron Technology Co ltd; Shanghai Likeng Technology Co ltd
Current assignee: Suzhou Likron Technology Co ltd; Shanghai Likeng Technology Co ltd
Priority date: 2023-09-08
Filing date: 2023-09-08
Publication date: 2023-11-07

Abstract

The embodiment of the application discloses a single-side EPB redundant brake control system, which comprises: the system comprises an EPB control unit, a line control and action unit, an EPB switch interface circuit, a wheel speed interface circuit and a power supply end; the wire control brake unit comprises a wire control brake chip and a first CAN communication module; the EPB control unit comprises an EPB control chip and a second CAN communication module; the EPB control chip and/or the linear control motor chip are/is electrically connected with the wheel speed interface circuit; the first power end and the second power end are respectively and electrically connected with the first motor driving module and the second motor driving module through the first switch module and the second switch module, and when partial devices in the EPB control unit are detected to fail, the brake system control line controls the brake unit to enter an EPB control state. According to the embodiment of the application, the complete EPB function is realized on the onebox, an independent EPB controller is canceled, single-side redundancy control is realized, and the manufacturing cost of the control module is reduced.

Description

Brake control system and brake control method for single-side EPB redundancy

Technical Field

The embodiment of the application relates to the technical field of chassis control, in particular to a brake control system and a brake control method for single-side EPB redundancy.

Background

Currently, the hydraulic brake system of the automobile gradually adopts the integrated design of a boost (electrically controlled brake booster) +ESC as an integral mechanism, realizes the conventional brake and stability control function and has the advantages of cost and weight, and the configuration is called an integrated brake-by-wire system, namely an onebox. The integrated brake-by-wire system is an urgent requirement of an automobile chassis system in a new energy automobile and an automatic driving environment in recent years, and is a development hot spot of a brake system in recent years.

In addition to onebox mode, products of ebooster, twobox, independent EPB, ESC and the like exist in the current market; each product scheme has respective advantages and disadvantages. How to design a solution with higher integration degree, higher stability and lower cost is a technical problem to be solved by those skilled in the art.

Disclosure of Invention

The embodiment of the application provides a single-side EPB redundant brake control system which can replace an independent EPB controller and has high integral control integration degree and relatively low cost.

In a first aspect, an embodiment of the present application provides a brake control system with single-sided EPB redundancy, including:

the wire control brake unit comprises a wire control brake chip and a first CAN communication module; the first CAN communication module is electrically connected with the wire control dynamic chip;

the EPB control unit comprises an EPB control chip and a second CAN communication module; the second CAN communication module is electrically connected with the EPB control chip, and the EPB control chip is electrically connected with the second EPB motor through the second motor driving module;

the EPB control chip or the line control dynamic chip is electrically connected with the EPB switch interface circuit;

the EPB control chip and/or the linear control dynamic chip are/is electrically connected with the wheel speed interface circuit;

the EPB control switching module is electrically connected with the first EPB motor through the first motor driving module;

the power supply end comprises a first power supply end and a second power supply end; the first power end and the second power end are respectively and electrically connected with the first motor driving module and the second motor driving module through the first switch module and the second switch module, and when partial devices in the EPB control unit are detected to fail, the brake control system control line controls the dynamic unit to enter an EPB control state.

As an optional implementation manner, in the first aspect of the embodiment of the present application, the EPB control unit further includes a second SBC module electrically connected to the EPB control chip, where the second SBC module is electrically connected to a second power supply terminal;

the wire control and dynamic unit further comprises a first SBC module electrically connected with the wire control and dynamic chip, and the first SBC module is electrically connected with a first power supply end.

The above discloses adopting the SBC module to carry out power detection mode, it can promote the safety and the stability of the power supply of this module through setting up the SBC module.

As an optional implementation manner, in the first aspect of the embodiment of the present application, the device further includes a first switching device, a second switching device, and a third switching device, where the first power supply end is connected to an input pin of the first switching device, the permanent magnet brushless motor driving module is connected to an output pin of the first switching device, and the wire control driving chip is connected to a control pin of the first switching device to control an on-off state between the input pin and the output pin of the first switching device;

the second power end is connected with an input pin of the second switching device, the electromagnetic valve driving module is connected with an output pin of the second switching device, and the EPB control chip is connected with a control pin of the second switching device to control the on-off state between the input pin and the output pin of the second switching device;

the output pin of the second switching device is connected with the input pin of the third switching device, the input pin of the first switching device is connected with the output pin of the third switching device, and the EPB control chip is connected with the control pin of the third switching device to control the on-off state between the input pin and the output pin of the third switching device.

The switching control of the corresponding devices is carried out by configuring specific switching devices and the connection relation between the switching devices and other devices in the brake control system; and the convenience and stability of overall control are improved.

As an optional implementation manner, in the first aspect of the embodiment of the present application, the first switch module is a fourth switch device, the second switch module is a fifth switch device, the first power supply end is connected to an input pin of the fourth switch device, an output pin of the fifth switch device is connected to an output pin of the fourth switch device, and the EPB control chip is connected to a control pin of the fourth switch device to control an on-off state between the input pin and the output pin of the fourth switch device;

the second power end is connected with an input pin of a fifth switching device, an output pin of the fifth switching device is connected with a second motor driving module, and the linear control dynamic chip is connected with a control pin of the fifth switching device to control the on-off state between the input pin and the output pin of the fifth switching device.

The switching control of the corresponding devices is carried out by configuring specific switching devices and the connection relation between the switching devices and other devices in the brake control system; and the convenience of overall control is improved.

As an optional implementation manner, in the first aspect of the embodiment of the present application, the EPB control chip is electrically connected to the line control and brake chip through a private CAN module.

The private CAN module is arranged to enable the wire control dynamic chip and the EPB control chip to be more convenient for data interaction.

As an optional implementation manner, in the first aspect of the embodiment of the present application, the first motor driving module includes a first pre-driving module, and a first bridge module electrically connected to the first pre-driving module, and the second motor driving module includes a second pre-driving module, and a second bridge module electrically connected to the second pre-driving module;

the first bridge module and the second bridge module are H-shaped bridge modules.

The scheme of the embodiment of the application is that the EPB control module or the linear control driving module is applied to the H-bridge driving module through the pre-driving module, PWM signals are output to the pre-driving module in real time according to a PID algorithm, and the H-bridge driving module is controlled to realize forward rotation and reverse rotation of the motor; the specific connection mode is as follows: the EPB control module is connected to the pre-driving module, the pre-driving module is connected to the H-bridge driving module, and the H-bridge driving module is connected with the corresponding EPB motor.

In an optional implementation manner, in the first aspect of the embodiment of the present application, the first SBC module and the second SBC module are further configured to receive an ignition signal sent by the ignition switch module.

As an optional implementation manner, in the first aspect of the embodiment of the present application, the type of the EPB control chip is TC234 or TC277, and the EPB control unit and the line control unit are integrally provided.

The specific chip model is disclosed, and the integration level of the EPB control unit and the linear control unit is improved through the integrated arrangement of the EPB control unit and the linear control unit. And in implementation, the performance of the line control motor chip can be higher than that of the EPB control chip because the requirement on the function is higher than that of the EPB control chip; the two integrated arrangements enable redundant EPB control.

In an optional implementation manner, in the first aspect of the embodiment of the present application, the EPB control unit further includes a first memory module electrically connected to the EPB control chip, and the line control unit further includes a second memory module electrically connected to the line control chip.

The memory module may be configured to store a corresponding setting program to realize a more diverse function.

As an optional implementation manner, in the first aspect of the embodiment of the present application, the linear control unit further includes a permanent magnet brushless motor driving module and a solenoid valve driving module, and the linear control unit is further configured to control the working states of the permanent magnet brushless motor and the solenoid valve through the permanent magnet brushless motor driving module and the solenoid valve driving module. Through the arrangement of the structure, a user can realize better service power-assisted braking, the structure is mainly driven by the linear control motor unit when being implemented, and the EPB control unit can not drive the permanent magnet brushless motor and the electromagnetic valve to complete corresponding actions. When the EPB control unit receives the dynamic EPB pulling request, the linear control braking unit is started to provide corresponding dynamic braking.

In a second aspect, an embodiment of the present application provides a method for brake control with single-sided EPB redundancy, including:

if the EPB control unit detects that the EPB control chip and/or the first CAN communication module have faults;

the control line controls the dynamic unit to enter a working state so as to perform single-side EPB redundancy control.

According to the embodiment of the application, the complete EPB function is realized on the onebox, the independent EPB controller is canceled, and single-side redundancy control is realized, so that the manufacturing cost of the control module is reduced. The scheme of the embodiment of the application ensures the redundancy of the power input, the power management module, the wheel speed input, the CAN communication module and the MCU module in the brake-by-wire system, so that the integrity of the static EPB function is not affected when any single point failure exists in the system, and the EPB service brake function is not affected when any single point failure exists; the overall safety is improved.

Drawings

FIG. 1 is a schematic block diagram of an EPB motor drive provided by an embodiment of the present application;

FIG. 2 is a schematic circuit diagram of a brake-by-wire unit according to an embodiment of the present application;

FIG. 3 is a schematic circuit diagram of a redundant EPB module provided by an embodiment of the present application;

FIG. 4 is a schematic circuit diagram of an H-bridge module according to an embodiment of the present application;

FIG. 5 is a schematic flow chart of a brake control method with single-side EPB redundancy provided by an embodiment of the present application;

fig. 6 is a schematic structural diagram of an electronic device according to an embodiment of the present application.

Detailed Description

In order to make the objects, technical solutions and advantages of the present application more apparent, the following detailed description of specific embodiments of the present application is given with reference to the accompanying drawings. It should be noted that, on the premise of no conflict, new embodiments may be formed by any combination of the embodiments or technical features described below. Materials and equipment used in this example are commercially available, except as specifically noted. Examples of embodiments are illustrated in the accompanying drawings, wherein like or similar reference numerals refer to like or similar elements throughout or elements having like or similar functionality. The embodiments described below by referring to the drawings are exemplary only for explaining the present application and are not to be construed as limiting the present application.

In the description of the present application, it should be understood that the terms "upper," "lower," "front," "rear," "vertical," "horizontal," "top," "bottom," "inner," "outer," and the like indicate or are based on the orientation or positional relationship shown in the drawings, merely to facilitate description of the present application and to simplify the description, and do not indicate or imply that the devices or elements referred to must have a specific orientation, be configured and operated in a specific orientation, and thus should not be construed as limiting the present application. In the description of the present application, the meaning of "a plurality" is two or more, unless specifically stated otherwise.

In the description of the present application, it should be noted that, unless explicitly stated or limited otherwise, the terms "connected," "connected," and "connected" are to be construed broadly, and may be fixedly connected, or may be connected through an intermediary, or may be connected between two elements or may be an interaction relationship between two elements. The specific meaning of the above terms in the present application can be understood by those of ordinary skill in the art according to the specific circumstances.

The terms first, second and the like in the description and in the claims and in the above-described figures, are used for distinguishing between similar elements and not necessarily for describing a particular sequential or chronological order. Furthermore, the terms "comprises," "comprising," and "having," and any variations thereof, are intended to cover a non-exclusive inclusion, such that a process, method, system, article, or apparatus that comprises a list of steps or elements is not necessarily limited to those steps or elements expressly listed but may include other steps or elements not expressly listed or inherent to such process, method, article, or apparatus.

Example 1

As shown in fig. 1-4, an embodiment of the present application provides a brake control system with single-side EPB redundancy, including:

the EPB control chip or the line control dynamic chip is electrically connected with the EPB switch interface circuit; the EPB switch interface circuit provided by the embodiment of the application has various setting modes, and can be correspondingly adjusted based on actual conditions, for example, the EPB switch interface circuit can be set as a circuit module, and then when the EPB switch interface circuit is connected with an EPB switch, a switch signal can be transmitted to a line control and action chip or an EPB control chip.

The EPB control chip and/or the linear control dynamic chip are/is electrically connected with the wheel speed interface circuit; the wheel speed interface circuit provided by the embodiment of the application has a plurality of setting modes, and can be correspondingly adjusted based on actual conditions, for example, the wheel speed interface circuit can be set as a circuit module, and then when the wheel speed interface circuit is connected with four wheel speed lines, signals transmitted by the four lines can be transmitted to corresponding line control brake chips or EPB control chips, part of line signals in the four lines can also be transmitted to the line control brake chips, and the other part of line signals are transmitted to the EPB control chips; besides the adoption of the wheel speed interface circuit, the wheel speed interface circuit can be divided into a first wheel speed interface circuit and a second wheel speed interface circuit, and then the first wheel speed interface circuit and the second wheel speed interface circuit are respectively matched with two wheel speed signal lines for signal transmission; when specific module division is carried out, the first wheel speed interface circuit can be divided into a linear control brake unit, and the second wheel speed interface circuit can be divided into an EPB control unit; thus, the first wheel speed interface circuit is connected with the two signal wires, the first wheel speed interface circuit is connected with the wire control dynamic chip, the second wheel speed interface circuit is connected with the two signal wires, and the second wheel speed interface circuit is connected with the EPB control chip;

the EPB control switching module is electrically connected with the first EPB motor through the first motor driving module; when the specific setting is carried out, the EPB control switching module can be set as an independent control switching module, and can also be arranged at the position of the linear control and dynamic unit or the EPB control unit;

The existing scheme generally adopts a mode of superposing EPB by onebox, and the mode can lead to more scattered modules and higher cost; when the scheme of the embodiment of the application is specifically implemented, an independent EPB controller is omitted, so that the cost is reduced to a certain extent, and although a corresponding circuit is redesigned to realize control redundancy, the added wire control action unit is not high in cost of the original EPB controller on one hand, and on the other hand, can be integrated with the EPB control unit to increase the integration level of the scheme, so that more space is provided for chassis control layout on the premise of ensuring safety redundancy.

More preferably, the EPB control unit further includes a second SBC module electrically connected to the EPB control chip, where the second SBC module is electrically connected to a second power supply terminal;

the wire control and dynamic unit further comprises a first SBC module electrically connected with the wire control and dynamic chip, and the first SBC module is electrically connected with a first power supply end;

in the embodiment of the application, the EPB main control unit is an EPB control unit (comprising MCU2, SBC2 and the like, wherein MCU2 is the EPB control chip, SBC2 is the second SBC module), the redundant control unit is an onebox (comprising MCU1, SBC1 and the like, MCU1 is the line control and action chip, and SBC1 is the first SBC module); the EPB main control unit controls two paths of EPB actuators, the redundant control unit takes over one path of EPB actuators through the EPB control switching module after failure, and the EPB main control unit and the redundant control unit (namely the linear control moving unit) perform information interaction through private CAN communication between the MCUs. The onebox realizes a line control function, and when the EPB control unit is detected to be faulty, the first EPB motor control is taken over to ensure the parking safety.

More preferably, the first SBC module and the second SBC module are further configured to receive an ignition signal sent by the ignition switch module.

The first SBC module and the second SBC module mentioned in the embodiment of the present application refer to a system base chip, where the system base chip is an independent chip including characteristics such as power supply, communication, monitoring diagnosis, security monitoring, and the like, and having GPIOs, and specific components of each module in a specific SBC module are as follows: the power supply may be a linear power supply or a switching power supply; the communication may include CAN, CANFD, and LIN; the monitoring diagnostics include wake-up inputs, watchdog, reset, interrupt, etc., fail-outputs after diagnosis of the circuit, as well as some features of functional safety. In automotive electronics hardware design, power, communications, including some monitoring (e.g., watchdog/reset/timer), are implemented through a number of circuits. This not only increases the difficulty of circuit design, but also is unfavorable for optimization improvement in terms of reliability, system cost, PCB space, circuit power consumption, and the like. After using the SBC, the external circuitry is greatly simplified because the SBC has highly integrated therein the basic circuit functions (power and communications) of a basic hardware system module. Even, the SBC module in the embodiment of the present application may also be directly a power management module to implement distribution management of power input to the external storage battery, and in the embodiment of the present application, the power end is mainly a port provided by the system module and connected to the external power module, and is used for receiving power supplied by the external power supply device.

More preferably, the linear control unit comprises a permanent magnet brushless motor and a driving of an electromagnetic valve, and is further used for controlling the working states of the permanent magnet brushless motor and the electromagnetic valve.

The scheme of the embodiment of the application comprises a permanent magnet brushless motor and an electromagnetic valve, wherein the linear control actuator is mainly used for providing linear control, the linear control actuator is a permanent magnet brushless motor, and the corresponding service brake is realized by pushing a master cylinder through a ball screw. Through the arrangement of the structure, a user can realize better service power-assisted braking, the structure is mainly driven by the linear control motor unit when being implemented, and the EPB control unit can not drive the permanent magnet brushless motor and the electromagnetic valve to complete corresponding actions. When the EPB control unit receives the dynamic EPB pulling request, the linear control braking unit is started to provide corresponding dynamic braking.

More preferably, the motor driving circuit further comprises a first switch device, a second switch device and a third switch device, wherein the first power end is connected with an input pin of the first switch device, the permanent magnet brushless motor driving module is connected with an output pin of the first switch device, and the wire control motor chip is connected with a control pin of the first switch device to control the on-off state between the input pin and the output pin of the first switch device;

the output pin of the second switching device is connected with the input pin of the third switching device, the input pin of the first switching device is connected with the output pin of the third switching device, and the linear control dynamic chip is connected with the control pin of the third switching device to control the on-off state between the input pin and the output pin of the third switching device.

The first switching device, the second switching device and the third switching device are controlled by a wire control and movement chip; the wire-passing control motor chip outputs a corresponding control instruction to realize the control of a corresponding switching device; the combination of a plurality of switching devices is realized through the switching device group, so that the permanent magnet brushless motor driving module and the hydraulic electromagnetic valve driving module are accurately controlled. The switching device may be a switching transistor, i.e. a MOSFET, a triode, etc., but may of course also be other switching devices, such as thyristors, relays, etc.

More preferably, the first switch module is a fourth switch device, the second switch module is a fifth switch device, the first power end is connected with an input pin of the fourth switch device, an output pin of the fifth switch device is connected with an output pin of the fourth switch device, and the wire control dynamic chip is connected with a control pin of the fourth switch device to control the on-off state between the input pin and the output pin of the fourth switch device;

the second power end is connected with an input pin of a fifth switching device, an output pin of the fifth switching device is connected with a second motor driving module, and the EPB control chip is connected with a control pin of the fifth switching device to control the on-off state between the input pin and the output pin of the fifth switching device. The control of the switch device is mainly used for realizing the power supply switching of the power supply end, and the fourth switch device and the fifth switch device can realize the switching to different power supply ports to supply power to the motor driving module.

More preferably, the EPB control chip is electrically connected to the brake-by-wire chip through a proprietary CAN module.

Specifically, the CAN bus is used for connecting different components, and then the components execute the same standard protocol, so that the CAN bus has the advantages of high compatibility, reliable information sharing and capability of reducing the number of wiring harnesses of the whole vehicle. The ECU communicates through a single CAN system rather than direct complex analog signal lines, which reduces errors, wiring and costs. The CAN bus provides an access point that CAN communicate with all network ecus—supporting centralized diagnostics, data logging and configuration. The CAN bus has strong anti-electric interference and anti-electromagnetic interference capability, and is very suitable for the application in the direction with strict safety requirements. CAN frames are prioritized by ID so that the highest priority data CAN immediately access the bus without causing interruption of other frames. When the method is implemented, different data are transmitted through different CAN communication modules, and the public CAN module is mainly used for transmitting data in the aspect of overall control in the vehicle, so that information interaction with the vehicle is realized through the public CAN module; the private CAN module is mainly used for transmitting specific data, such as inertial measurement data detected by an IMU (Inertial Measurement Unit inertial measurement unit), and the transmission of each information CAN be realized more efficiently and safely through the above distinction.

More preferably, the first motor driving module includes a first pre-driving module and a first bridge module electrically connected to the first pre-driving module, and the second motor driving module includes a second pre-driving module and a second bridge module electrically connected to the second pre-driving module;

As shown in fig. 4, the motor driving circuit is formed by 4 MOS transistors, which are shaped like an H-bridge circuit. Different control effects on the intermediate motor are achieved by controlling the on and off of the 4 MOS tubes. In the embodiment of the application, the NMOS tube is taken as an example to carry out corresponding functional principle description, and the grid electrode of the NMOS tube is turned on when the grid electrode is at a high level, and turned off when the grid electrode is at a low level.

Specifically, when the motor is required to be in the forward rotation mode, the grid electrodes of the Q1 and the Q4 are controlled to be in a high level, the grid electrodes of the Q2 and the Q3 are controlled to be in a low level, and at the moment, the Q1 and the Q4 are conducted, and the motor rotates in the forward direction. When the motor is required to be in the reverse mode, the grid electrodes of the Q2 and the Q3 are controlled to be in a high level, the grid electrodes of the Q1 and the Q4 are controlled to be in a low level, and at the moment, the Q2 and the Q3 are conducted, and the motor reversely rotates. It is absolutely impossible to have the same-side (left/right) FETs conduct simultaneously in the H-bridge, since this would result in a short circuit of current directly to ground without passing through the motor.

Specifically, the high-end and low-end driving of the MOS tube is as follows: the high-end driving means that the MOS tube is at one high potential end of the load; and the opposite low-end drive is that the MOS tube is at one end of low potential of the load. The larger the driving voltage is, the faster the rotating speed is; the larger the current, the larger the torque; when torque < load, motor speed decreases and current increases to increase torque. When the load is very large, the motor belt is not moved and the rotation is stopped, the current reaches a maximum value, and special attention is required at this time, and the motor drive is likely to burn out.

More preferably, the model of the EPB control chip is TC234 or TC277, and the EPB control unit and the line control unit are integrally arranged. Any single point failure does not result in a static EPB loss of function. Any single point failure does not affect the low-speed service braking function, and a typical application scenario is emergency braking for remote parking.

In implementation, the performance of the line control chip may be higher than that of the EPB control chip, because it requires higher functionality than the EPB control chip; the two integrated arrangements enable redundant EPB control.

More preferably, the EPB control unit further includes a first memory module electrically connected to the EPB control chip, and the line control unit further includes a second memory module electrically connected to the line control chip.

The scheme realizes the redundancy of the power input, the power management module, the wheel speed input, the CAN communication and the MCU module of the single-side EPB motor. The redundant EPB module can realize service braking by driving the double-path EPB motor.

Example two

Referring to fig. 5, as shown in fig. 5, an embodiment of the present application provides a brake control method for single-side EPB redundancy, including:

s101: if the EPB control unit detects that the EPB control chip and/or the first CAN communication module have faults;

s102: the control line controls the dynamic unit to enter a working state so as to perform single-side EPB redundancy control.

Example III

Referring to fig. 6, fig. 6 is a schematic structural diagram of an electronic device according to an embodiment of the application. The electronic device may be a computer, a server, or the like, and of course, may also be an intelligent device such as a mobile phone, a tablet computer, a monitor terminal, or the like, and an image acquisition device having a processing function. As shown in fig. 6, the electronic device may include:

a memory 510 storing executable program code;

a processor 520 coupled to the memory 510;

wherein the processor 520 invokes the executable program code stored in the memory 510 to perform some or all of the steps in the brake control method of single-sided EPB redundancy in the second embodiment.

An embodiment of the present application discloses a computer-readable storage medium storing a computer program, wherein the computer program causes a computer to execute part or all of the steps in the brake control method of single-sided EPB redundancy in the second embodiment.

The embodiment of the application also discloses a computer program product, wherein when the computer program product runs on a computer, the computer is caused to execute part or all of the steps in the single-side EPB redundant brake control method in the second embodiment.

The embodiment of the application also discloses an application release platform, wherein the application release platform is used for releasing a computer program product, and when the computer program product runs on a computer, the computer is caused to execute part or all of the steps in the single-side EPB redundant brake control method in the second embodiment.

In various embodiments of the present application, it should be understood that the size of the sequence numbers of the processes does not mean that the execution sequence of the processes is necessarily sequential, and the execution sequence of the processes should be determined by the functions and internal logic thereof, and should not constitute any limitation on the implementation process of the embodiments of the present application.

The units described as separate units may or may not be physically separate, and units shown as units may or may not be physical units, may be located in one place, or may be distributed on a plurality of network units. Some or all of the units may be selected according to actual needs to achieve the purpose of the embodiment.

In addition, each functional unit in the embodiments of the present application may be integrated in one processing unit, or each unit may exist alone physically, or two or more units may be integrated in one unit. The integrated units may be implemented in hardware or in software functional units.

The integrated units, if implemented in the form of software functional units and sold or used as stand-alone products, may be stored in a computer-accessible memory. Based on this understanding, the technical solution of the present application, or a part contributing to the prior art or all or part of the technical solution, may be embodied in the form of a software product stored in a memory, comprising several requests for a computer device (which may be a personal computer, a server or a network device, etc., in particular may be a processor in a computer device) to execute some or all of the steps of the method according to the embodiments of the present application.

In the embodiments provided herein, it should be understood that "B corresponding to a" means that B is associated with a, from which B can be determined. It should also be understood that determining B from a does not mean determining B from a alone, but may also determine B from a and/or other information.

Those of ordinary skill in the art will appreciate that some or all of the steps of the various methods of the described embodiments may be implemented by hardware associated with a program that may be stored in a computer-readable storage medium, including Read-Only Memory (ROM), random-access Memory (Random Access Memory, RAM), programmable Read-Only Memory (Programmable Read-Only Memory, PROM), erasable programmable Read-Only Memory (Erasable Programmable Read-Only Memory, EPROM), one-time programmable Read-Only Memory (OTPROM), electrically erasable programmable Read-Only Memory (EEPROM), compact disc Read-Only Memory (Compact Disc Read-Only Memory, CD-ROM), or other optical disk Memory, magnetic disk Memory, tape Memory, or any other medium capable of being used to carry or store data that is readable by a computer.

The foregoing description is only of the preferred embodiments of the application and the technical principles employed. The present application is not limited to the specific embodiments described herein, but is capable of numerous modifications, rearrangements and substitutions as will now become apparent to those skilled in the art without departing from the scope of the application. Therefore, while the application has been described in connection with the above embodiments, the application is not limited to the embodiments, but may be embodied in many other equivalent forms without departing from the spirit of the application, the scope of which is set forth in the following claims.

Claims

1. A single-sided EPB redundant brake control system, comprising:

2. The single-sided EPB redundant brake control system of claim 1, wherein the EPB control unit further comprises a second SBC module electrically connected to the EPB control chip, the second SBC module electrically connected to a second power source terminal;

3. The single-sided EPB redundant brake control system of claim 2, wherein the first SBC module and the second SBC module are further configured to receive an ignition signal sent by an ignition switch module;

the first switch module is a fourth switch device, the second switch module is a fifth switch device, the first power end is connected with an input pin of the fourth switch device, an output pin of the fifth switch device is connected with an output pin of the fourth switch device, and the EPB control chip is connected with a control pin of the fourth switch device to control the on-off state between the input pin and the output pin of the fourth switch device;

4. The single-sided EPB redundant brake control system of claim 1, wherein the EPB control chip is electrically connected to the brake-by-wire chip through a proprietary CAN module.

5. The single-sided EPB redundant brake control system of claim 1 wherein the first motor drive module comprises a first pre-drive module and a first bridge module electrically connected to the first pre-drive module, and the second motor drive module comprises a second pre-drive module and a second bridge module electrically connected to the second pre-drive module;

6. The single-sided EPB redundant brake control system of claim 1, wherein the EPB control unit further comprises a first memory module electrically coupled to the EPB control chip, and wherein the brake-by-wire unit further comprises a second memory module electrically coupled to the brake-by-wire chip.

7. The single-sided EPB redundant brake control system of claim 1, wherein the EPB control chip is of model TC234 or TC277, and the EPB control unit and the brake-by-wire unit are integrally provided.

8. The single-sided EPB redundant brake control system of claim 1, wherein the brake-by-wire unit further comprises a permanent magnet brushless motor driving module and a solenoid valve driving module, and wherein the brake-by-wire unit is further configured to control the operating states of the permanent magnet brushless motor and the solenoid valve through the permanent magnet brushless motor driving module and the solenoid valve driving module.

9. The single-sided EPB redundant brake control system of claim 8, further comprising a first switching device, a second switching device, and a third switching device, wherein the first power terminal is coupled to an input pin of the first switching device, the permanent magnet brushless motor driving module is coupled to an output pin of the first switching device, and the wire control motor chip is coupled to a control pin of the first switching device to control an on-off state between the input pin and the output pin of the first switching device;

10. A brake control method implemented using the single-sided EPB redundant brake control system of any one of claims 1-9, comprising:

if the EPB control unit detects that the EPB control chip and/or the second CAN communication module have faults;