Electronic mechanical braking system

Abstract

The invention relates to the technical field of vehicle braking, in particular to an electronic mechanical braking system. The invention provides an electronic mechanical braking system which comprises a power source, a braking control assembly, a bridge control module and a plurality of wheel end modules. The power source is connected with the bridge control module. The brake control assembly is connected with the bridge control module and used for sending a brake instruction to the bridge control module. The bridge control module is electrically connected with the wheel end module and used for controlling the wheel end module to brake the clamp according to the received brake instruction, and multiple brake modes are achieved. According to the electronic mechanical braking system, electric signal transmission is adopted in the whole process from an instruction to an actuator, the problems of complexity and weight of a traditional electric pneumatic braking system are solved, the problem of long braking response time is solved, and multiple braking modes such as traveling braking, parking braking, emergency braking, emergency braking and holding braking are achieved.

Description

Technical Field

[0001] This invention relates to the field of vehicle braking technology, and more specifically, to an electromechanical braking system. Background Technology

[0002] The increasing number of vehicles has led to frequent traffic safety problems, making people pay more and more attention to vehicle safety. In order to enhance the active safety performance of vehicles, countries have invested a lot of research in this field, among which service braking technology plays a key role in improving vehicle safety.

[0003] Traditional braking systems typically rely on a hybrid approach combining pneumatic, hydraulic, and mechanical braking. However, these methods have significant drawbacks. For example, hydraulic systems can lead to environmental pollution due to oil leaks, have slow braking response times, longer braking distances, and lower overall safety. Furthermore, traditional braking systems have inherent limitations in their design and operating principles. Hydraulic systems, for instance, exhibit lag in pressure build-up and release, and lack sufficient control precision. These issues hinder further optimization of braking performance. Moreover, traditional braking systems are ill-suited to the evolving demands of the modern automotive industry's "new four modernizations" (electrification, connectivity, intelligence, and sharing), necessitating the development of new braking systems that align with the trends of intelligent driving and electrification.

[0004] With advancements in electronics and network technologies, electromechanical braking systems (EMB) have gradually become a promising new braking technology. EMB simplifies the vehicle's system structure by replacing traditional hydraulic or pneumatic actuators with electric actuators, allowing for a more rational layout and reducing overall vehicle weight and energy consumption. Using electrical signals for information transmission, EMB eliminates traditional brake lines and hydraulic or pneumatic media, significantly improving the braking system's response speed and control precision, thereby effectively shortening braking distance and enhancing vehicle safety. Furthermore, the electronic control characteristics of this system make it easier to integrate into the vehicle's electronic network, combining with other safety control systems such as ABS (Anti-lock Braking System) and ESP (Electronic Stability Program), and compatible with features like smart cockpits. Simultaneously, electric actuators reduce the environmental pollution associated with traditional hydraulic and pneumatic systems; therefore, EMB is considered to have significant development potential.

[0005] Currently, vehicles commonly use electro-pneumatic braking systems. Compared to electromechanical braking systems, electro-pneumatic braking systems have the advantages of relatively lower cost and more mature and stable technology. However, they also have some drawbacks, such as longer response time, longer braking distance, lower energy conversion efficiency, more complex structure, higher noise, and inconvenient maintenance. In contrast, although electromechanical braking systems are more expensive and the technology is still under development, their significant advantages in response speed, handling stability, energy efficiency, and environmental friendliness make them more competitive in the future. Summary of the Invention

[0006] The purpose of this invention is to provide an electromechanical braking system for vehicles that solves the problems of complexity and weight of traditional electronic braking systems, as well as the problem of long braking response time. At the same time, it adopts dual-path redundant transmission throughout the process to improve its safety.

[0007] The following provides a brief overview of one or more aspects to offer a basic understanding of them. This overview is not an exhaustive summary of all conceived aspects, nor is it intended to identify key or decisive elements of all aspects, nor to define the scope of any or all aspects. Its sole purpose is to present some concepts of one or more aspects in a simplified form to prepare for the more detailed descriptions that follow.

[0008] To achieve the above objectives, the present invention provides an electromechanical braking system.

[0009] Includes several power supplies, braking control components, axle control modules, and several wheel-end modules:

[0010] The aforementioned power supplies are connected to the bridge control module;

[0011] The braking control component is connected to the bridge control module and is used to send braking commands to the bridge control module;

[0012] The bridge control module is electrically connected to the wheel-end module and is used to control the brake calipers of the wheel-end module according to the received braking command to realize multiple braking modes.

[0013] In one embodiment,

[0014] The bridge control module includes several electronic control units and several DC / AC modules:

[0015] The aforementioned electronic control units are used to receive and send braking commands;

[0016] The aforementioned DC / AC modules are electrically connected to several power supplies, respectively.

[0017] Each electronic control unit is electrically connected to at least two DC / AC modules to receive braking commands and send them to the corresponding DC / AC modules.

[0018] The DC / AC module is electrically connected to the corresponding wheel end module and is used to convert the input DC power into AC power and provide power to the wheel end module.

[0019] In one embodiment, the plurality of electronic control units include a first electronic control unit and a second electronic control unit, the plurality of power supplies include a second vehicle power supply and a third vehicle power supply, and the plurality of wheel end modules include a first wheel end module and a second wheel end module;

[0020] The plurality of DC / AC modules include a first DC / AC module, a second DC / AC module, a third DC / AC module, and a fourth DC / AC module;

[0021] The first DC / AC module is connected to the second vehicle power supply, the first electronic control unit, and the first wheel end module, and is used to convert DC power into AC power.

[0022] The second DC / AC module is connected to the second vehicle power supply, the first electronic control unit, and the second wheel end module, and is used to convert DC power into AC power.

[0023] The third DC / AC module is connected to the third vehicle power supply, the second electronic control unit, and the first wheel end module, and is used to convert DC power into AC power.

[0024] The fourth DC / AC module is connected to the third vehicle power supply, the second electronic control unit, and the second wheel end module, and is used to convert DC power into AC power.

[0025] In one embodiment, the braking control component issues a braking command, and the first electronic control unit receives and controls the braking command to be transmitted to the first DC / AC module and / or the second DC / AC module to drive the first wheel end module and / or the second wheel end module to achieve braking.

[0026] The braking control component issues a braking command, and the second electronic control unit receives and controls the braking command to be transmitted to the third DC / AC module and / or the fourth DC / AC module, driving the first wheel end module and / or the second wheel end module to achieve braking.

[0027] In one embodiment, the bridge control module further includes a DC / DC boost module, and the plurality of power supplies further include a first on-board power supply.

[0028] The DC / DC boost module is electrically connected to the first vehicle power supply, the first electronic control unit, the first DC / AC module, and the second DC / AC module, respectively.

[0029] The DC / DC boost module boosts the output voltage of the first vehicle power supply and converts it into the input voltage of the first DC / AC module and the second DC / AC module.

[0030] In one embodiment, the braking commands issued by the braking control component include service braking commands, parking braking commands, emergency braking commands, emergency braking commands, and holding braking commands;

[0031] The multiple braking modes include service braking mode, parking braking mode, emergency braking mode, emergency braking mode, and holding braking mode;

[0032] The braking commands issued by the braking control component include service braking commands, parking braking commands, emergency braking commands, emergency braking commands, and holding braking commands.

[0033] In one embodiment, the wheel-end module includes several windings, a wheel-end module motor, a wheel-end module brake caliper, and a wheel-end module clutch.

[0034] The plurality of windings generate electromagnetic force within the wheel-end module motor to provide electrical energy;

[0035] The wheel-end module motor is used to convert or transmit electrical energy;

[0036] The wheel-end module brake caliper performs the braking action;

[0037] The wheel-end module clutch is used to maintain the power output of the motor.

[0038] In one embodiment, the bridge control module drives the winding-controlled wheel-end module motor according to the received driving braking command, and the wheel-end module motor controls the wheel-end module brake caliper to apply or release braking force.

[0039] The braking command is issued by the braking control component or the automatic driving system.

[0040] In one embodiment, the bridge control module drives the winding-controlled wheel end module motor according to the parking brake command received, and the wheel end module motor controls the wheel end module brake caliper to apply or release braking force.

[0041] The parking braking command is issued by the braking control component or the automatic driving system.

[0042] In one embodiment, an emergency relay is also included, with one end connected to the brake control assembly and the other end connected to the wheel end module;

[0043] The emergency relay operates the wheel-end module clutch according to the received emergency braking command, and the wheel-end module clutch controls the wheel-end module brake caliper to apply or release braking force.

[0044] The emergency braking command is issued by the braking control component or the automatic driving system.

[0045] In one embodiment, the bridge control module receives the emergency braking command and drives the wheel-end module motor controlled by the winding. The wheel-end module motor controls the wheel-end module brake caliper to apply or release braking force.

[0046] The emergency braking command is issued by the braking control component or the automatic driving system.

[0047] In one embodiment, the bridge control module receives the holding brake command and drives the wheel end module motor controlled by the winding, and the wheel end module motor controls the wheel end module brake caliper to apply or release braking force.

[0048] The brake hold command is issued by the brake control component or the automatic driving system.

[0049] In one embodiment, the braking control component issues the service braking command via analog communication; issues the emergency braking command via digital communication; issues the parking braking command via digital communication; and issues the holding braking command via digital communication.

[0050] In one embodiment,

[0051] The electromechanical braking system also includes an emergency braking train line, a first communication line, a second communication line, and an I / O acquisition hardline;

[0052] The bridge control module further includes a first communication module, a second communication module, a first I / O module, and a second I / O module:

[0053] The first communication module is connected to the braking control component via a first communication line and is used to transmit communication signals;

[0054] The second communication module is connected to the braking control component via a second communication line and is used to transmit communication signals;

[0055] The communication signals include braking commands and train information;

[0056] The first IO module and the second IO module are respectively connected to the braking control component through IO acquisition hard wires for inputting and outputting control signals. The control signals include parking brake command, emergency brake command, emergency braking command, and holding brake command.

[0057] The emergency braking train line is connected to the wheel end module and is used for emergency braking.

[0058] To achieve the above objectives, the present invention provides a vehicle employing an electromechanical braking system as described in any of the preceding claims.

[0059] This invention proposes an electromechanical braking system and vehicle. The main equipment in the system includes integrated devices such as a bridge control module and wheel-end modules, realizing multiple braking modes such as service braking, parking braking, emergency braking, emergency braking, and holding braking. From command to actuator, dual-path redundant transmission is adopted, and electrical signal transmission is used throughout the process. This achieves the technical effects of fewer devices, lighter weight, compact structure, small installation space, short response time, and short braking distance, significantly improving the efficiency, environmental friendliness, and safety of the braking system, while also enhancing the maintainability of the system and the flexibility of the overall vehicle design. Attached Figure Description

[0060] The above-described features and advantages of the present invention will be better understood after reading the following detailed description of embodiments of the present disclosure in conjunction with the accompanying drawings. In the drawings, components are not necessarily drawn to scale, and components having similar related properties or features may have the same or similar reference numerals.

[0061] Figure 1 A schematic diagram of an electromechanical braking system according to an embodiment of the present invention is shown.

[0062] Figure 2 A schematic diagram of an electromechanical braking system according to another embodiment of the present invention is shown.

[0063] The meanings of the labels in the figures are as follows:

[0064] 100 power supply;

[0065] 200 Braking Control Components;

[0066] 300 bridge control module;

[0067] 400 wheel end module;

[0068] 1001 First control power supply;

[0069] 1002 Second control power supply;

[0070] 1003 First Vehicle Power Supply;

[0071] 1004 Second vehicle power supply;

[0072] 1005 Third Vehicle Power Supply;

[0073] 3001DC / DC module;

[0074] 3021 First Electronic Control Unit;

[0075] 3022 Second Electronic Control Unit;

[0076] 3031 First DC / AC Module;

[0077] 3032 Second DC / AC Module;

[0078] 3033 Third DC / AC Module;

[0079] 3034 Fourth DC / AC Module;

[0080] 401 First Round End Module;

[0081] 402 Second Round End Module;

[0082] K1 First emergency relay;

[0083] K2 Second Emergency Relay. Detailed Implementation

[0084] To make the objectives, technical solutions, and advantages of this invention clearer, the invention will be further described in detail below with reference to the accompanying drawings and embodiments. It should be understood that the specific embodiments described herein are for illustrative purposes only and are not intended to limit the invention.

[0085] In the description of this specification, references to terms such as "one embodiment," "some embodiments," "example," "specific example," or "some examples," etc., indicate that a specific feature, structure, material, or characteristic described in connection with that embodiment or example is included in at least one embodiment or example of the invention. In this specification, the illustrative expressions of the above terms do not necessarily refer to the same embodiment or example. Furthermore, the specific features, structures, materials, or characteristics described may be combined in any suitable manner in one or more embodiments or examples.

[0086] Figure 1 A schematic diagram of an electromechanical braking system according to an embodiment of the present invention is shown, as follows: Figure 1 As shown, the electromechanical braking system proposed in this invention includes a power supply 100, a braking control component 200, a bridge control module 300, and several wheel-end modules 400.

[0087] Power supply 100 is connected to bridge control module 300;

[0088] The braking control component 200 is connected to the bridge control module 300 and is used to send braking commands to the bridge control module 300. The bridge control module 300 is electrically connected to the wheel end module 400 and is used to control the brake calipers of the wheel end module according to the received braking commands to realize multiple braking modes.

[0089] The electromechanical braking system proposed in this invention mainly comprises integrated devices such as a bridge control module and wheel-end modules. Typically, one bridge control module is configured for each driveshaft, and one bridge control module controls two wheel-end modules. This invention ensures safe and reliable transmission of commands to the actuators through a dual-redundancy design. Simultaneously, it eliminates traditional brake lines and adopts electrical signal transmission, which not only simplifies the vehicle system structure and reduces curb weight and energy consumption, but also significantly improves braking performance and response speed, thereby enhancing the vehicle's active safety.

[0090] Figure 2 A schematic diagram of an electromechanical braking system according to another embodiment of the present invention is shown, such as... Figure 2 As shown, the present invention proposes an electromechanical braking system, which includes several power supplies 100, a braking control component (not shown in the figure), a bridge control module 300, and a wheel end module 400.

[0091] The power supplies 100 include: a first control power supply 1001, a second control power supply 1002, a first vehicle power supply 1003, a second vehicle power supply 1004, and a third vehicle power supply 1005.

[0092] Specifically, the first control power supply 1001 and the second control power supply 1002 may be, but are not limited to, 24VDC, and are used to provide power to control devices such as electronic control units (ECUs); the first vehicle power supply 1003 and the third vehicle power supply 1005 may be, but are not limited to, 24VDC, and the second vehicle power supply 1004 may be, but is not limited to, 600VDC, and are used to provide power to the engine, lighting, audio system, air conditioning, DC / AC module, etc.

[0093] Braking control components may include, but are not limited to: a brake pedal, a stop button, an emergency stop button, and a hold button. The brake pedal is used to issue a service braking command or an emergency braking command; the stop button is used to issue a stop braking command; the emergency stop button is used to issue an emergency braking command; and the hold button is used to issue a hold braking command.

[0094] The braking commands issued by the braking control component include, but are not limited to, service braking commands, parking braking commands, emergency braking commands, emergency braking commands, and holding braking commands.

[0095] The bridge control module 300 includes: a communication module, several electronic control units, several DC / AC modules, a DC / DC boost module, and an I / O module.

[0096] The communication module includes a first communication transceiver module and a second communication transceiver module, and is communicatively connected to the electronic control unit for communication.

[0097] More specifically, CAN (Controller Area Network) or ETH (Ethernet) communication lines are used to transmit braking commands, load, electric braking, and other information. Braking commands are transmitted to the first and second communication transceiver modules via the first and second communication lines (CAN or ETH communication lines). The first communication line is the primary transmission line, and the second communication line serves as backup to ensure system reliability.

[0098] The electronic control unit includes a first electronic control unit 3021 and a second electronic control unit 3022. The first electronic control unit 3021 and the second electronic control unit 3022 are redundant and are used to receive and send control commands. Specifically, the first electronic control unit 3021 and the second electronic control unit 3022 are communicatively connected to the first wheel end module 401 and the second wheel end module 402, and control the wheel end module 400 to perform braking operations according to braking commands.

[0099] A DC / AC module is electrically connected to the wheel end module 400 to provide power.

[0100] The DC / DC boost module is electrically connected to the DC / AC module and is used for high-voltage power supply.

[0101] The I / O module includes a first I / O module and a second I / O module, which are used for inputting and outputting control signals.

[0102] The DC / AC module includes a first DC / AC module 3031, a second DC / AC module 3032, a third DC / AC module 3033, and a fourth DC / AC module 3034, which are used to convert direct current into alternating current and provide power.

[0103] In one embodiment, the first DC / AC module and the second DC / AC module can be directly powered by the second vehicle power supply 1004, or they can be powered by the first vehicle power supply 1003 through the DC / DC module 3001 after being boosted by the DC / DC module 3001.

[0104] In one embodiment, DC / DC module 3001 is used to boost the 24VDC of the first vehicle power supply 1003 to 600VDC to power the first DC / AC module and the second DC / AC module. Selecting high-voltage and low-voltage power supply redundancy not only improves the system's reliability but also enhances its safety.

[0105] Optionally, the first DC / AC module and the second DC / AC module are used, but not limited to, to convert 600V DC power to 380V AC power.

[0106] The third and fourth DC / AC modules are used, but not limited to, to convert 24V DC power to 380V AC power.

[0107] Wheel end module 400 includes a first wheel end module 401 and a second wheel end module 402. Each wheel end module includes several windings, a wheel end module motor, a wheel end module brake caliper, and a wheel end module clutch.

[0108] The plurality of windings includes a first winding and a second winding, which generate electromagnetic force in the wheel-end module motor to provide electrical energy;

[0109] The wheel-end module motor is used to convert or transmit electrical energy;

[0110] The wheel-end module brake caliper performs the braking action;

[0111] The wheel-end module clutch is used to maintain the power output of the motor.

[0112] The electromechanical braking system proposed in this invention also includes an emergency braking train line, a first communication line, a second communication line, and an I / O acquisition hardline.

[0113] The Secondary Brake Vehicle Line (SEBVL) connects to the wheel-end module and is used for emergency braking. It is automatically or manually triggered in an emergency to quickly decelerate and stop the train.

[0114] The first communication line and the second communication line are connected to the bridge control module and are used to transmit train information. The first communication line is mainly used to transmit information such as driving brake commands, load and electric braking; the second communication line is used as a backup to transmit information such as driving brake commands, load and electric braking.

[0115] The I / O acquisition hardwire is connected to the bridge control module and is used to transmit braking commands, specifically parking braking commands, emergency braking commands, and holding braking commands.

[0116] In one embodiment, the plurality of DC / AC modules includes a first DC / AC module, a second DC / AC module, a third DC / AC module, and a fourth DC / AC module;

[0117] The first DC / AC module is connected to the second vehicle power supply, the first electronic control unit, and the first wheel end module, and is used to convert DC power into AC power.

[0118] The second DC / AC module is connected to the second vehicle power supply, the first electronic control unit, and the second wheel end module, and is used to convert DC power into AC power.

[0119] The third DC / AC module is connected to the third vehicle power supply, the second electronic control unit, and the first wheel end module, and is used to convert DC power into AC power.

[0120] The fourth DC / AC module is connected to the third vehicle power supply, the second electronic control unit, and the second wheel end module, and is used to convert DC power into AC power.

[0121] In one embodiment, the braking control component issues a braking command, and the first electronic control unit receives and controls the braking command to be transmitted to the first DC / AC module and / or the second DC / AC module to drive the motors of the first wheel end module and / or the second wheel end module to achieve braking.

[0122] The braking control component issues a braking command, and the second electronic control unit receives and controls the braking command to be transmitted to the third DC / AC module and / or the fourth DC / AC module to drive the motors of the first wheel end module and / or the second wheel end module to achieve braking.

[0123] The electromechanical braking system proposed in this invention can realize multiple braking modes, including but not limited to service braking mode, parking braking mode, emergency braking mode, emergency braking mode, and holding braking mode.

[0124] Furthermore, the braking control component issues the service braking command via analog communication; issues the emergency braking command via digital communication; issues the parking braking command via digital communication; and issues the holding braking command via digital communication.

[0125] In one embodiment, the electromechanical braking system proposed in this invention can realize a service braking mode. The bridge control module drives the wheel-end module motor controlled by the winding according to the received service braking command. The wheel-end module motor controls the wheel-end module brake caliper to apply or release braking force. The service braking command is issued by the braking control component or the automatic driving system.

[0126] In this embodiment, the vehicle braking command can be infinitely adjustable from 0 to 100 levels, and the wheel end module motor controls the wheel end module to adjust the corresponding braking force according to the size of the front end level.

[0127] In this embodiment, the service braking mode can respond to braking needs under both manual and autonomous driving conditions. Service braking commands include, but are not limited to, service braking application commands and service braking release commands. Specifically, the service braking application command is issued by the driver via the brake pedal or the autonomous driving system to increase braking force, causing the vehicle to decelerate or stop. The service braking release command is issued by the driver via the brake pedal or the autonomous driving system to reduce or release braking force, allowing the vehicle to resume driving or maintain its current speed.

[0128] In one embodiment, under manual driving conditions, the driver issues a first braking command via the brake pedal, which is transmitted to the first communication transceiver module via a first communication line (CAN (Controller Area Network) or ETH (Ethernet)). The command is then processed by the first electronic control unit 3021, which controls the first DC / AC module 3031 and the second DC / AC module 3032 to perform voltage conversion. The first electronic control unit 3021 also controls the first winding to drive the motors of the first wheel-end module 401 and the second wheel-end module 402, ultimately causing the brake calipers of the first wheel-end module 401 and the second wheel-end module 402 to actuate and achieve braking.

[0129] In another embodiment, the driver issues a second braking command via the brake pedal, which is transmitted to the second communication transceiver module via a second communication line (CAN (Controller Area Network) or ETH (Ethernet)). The second electronic control unit 3022 then processes the command and controls the third DC / AC module 3033 and the fourth DC / AC module 3034 to perform voltage conversion. The second electronic control unit 3022 also controls the second winding to drive the motors of the first wheel end module 401 and the second wheel end module 402, ultimately causing the brake calipers of the first wheel end module 401 and the second wheel end module 402 to actuate and achieve braking.

[0130] In one embodiment, under autonomous driving conditions, the autonomous driving system issues a first driving braking command and transmits it to the first communication transceiver module via a first communication line (CAN (Controller Area Network) or ETH (Ethernet)). The command is then processed by the first electronic control unit 3021, which controls the first DC / AC module 3031 and the second DC / AC module 3032 to perform voltage conversion. The first electronic control unit 3021 also controls the first winding to drive the motors of the first wheel-end module 401 and the second wheel-end module 402, ultimately causing the brake calipers of the first wheel-end module 401 and the second wheel-end module 402 to actuate and achieve braking.

[0131] In another embodiment, the autonomous driving system issues a second braking command and transmits it to the second communication transceiver module via a second communication line (CAN (Controller Area Network) or ETH (Ethernet)). The command is then processed by the second electronic control unit 3022, which controls the third DC / AC module 3033 and the fourth DC / AC module 3034 to perform voltage conversion. The second electronic control unit 3022 also controls the second winding to drive the motors of the first wheel end module 401 and the second wheel end module 402, ultimately causing the brake calipers of the first wheel end module 401 and the second wheel end module 402 to actuate and achieve braking.

[0132] The electromechanical braking system provided by this invention has two independent sets of commands and control paths in both manual driving mode and automatic driving mode, so as to improve the reliability and safety of the system.

[0133] In one embodiment, the electromechanical braking system proposed in this invention can realize a parking braking mode. The bridge control module drives the wheel end module motor controlled by the winding according to the parking braking command received. The wheel end module motor controls the wheel end module brake caliper to apply or release braking force. The parking braking command is issued by the braking control component or the automatic driving system.

[0134] In this embodiment, after the bridge control module receives the parking brake command, the electronic control unit cuts off the power supply to the wheel end module and applies the parking brake.

[0135] In this embodiment, the parking braking mode can respond to braking needs under both manual and autonomous driving conditions. The parking braking commands include, but are not limited to, parking brake application commands and parking brake release commands. The parking brake application command is issued by the driver via the parking button or the autonomous driving system to prevent the vehicle from sliding on a slope; the parking brake release command is also issued by the driver via the parking button or the autonomous driving system to release the vehicle from its parked state, allowing it to move.

[0136] In one embodiment, under manual driving conditions, the driver issues a first parking brake command via the parking button. The first parking brake command is transmitted to the first electronic control unit 3021 for processing through the first I / O module. The first electronic control unit 3021 controls the first DC / AC module 3031 and the second DC / AC module 3032 to perform voltage conversion. The first electronic control unit 3021 controls the first winding to drive the motors of the first wheel end module 401 and the second wheel end module 402, ultimately causing the brake calipers of the first wheel end module 401 and the second wheel end module 402 to actuate and achieve braking.

[0137] In another embodiment, the driver issues a second parking brake command via the parking button. The second parking brake command is transmitted to the second electronic control unit 3022 for processing via the second I / O module. The second electronic control unit 3022 controls the third DC / AC module 3033 and the fourth DC / AC module 3034 to perform voltage conversion. The second electronic control unit 3022 controls the second winding to drive the motors of the first wheel end module 401 and the second wheel end module 402, ultimately causing the brake calipers of the first wheel end module 401 and the second wheel end module 402 to actuate and achieve braking.

[0138] In one embodiment, under autonomous driving conditions, the autonomous driving system issues a first parking brake command. The first parking brake command is transmitted to the first electronic control unit 3021 for processing through the first I / O module. The first electronic control unit 3021 controls the first DC / AC module 3031 and the second DC / AC module 3032 to perform voltage conversion. The first electronic control unit 3021 controls the first winding to drive the motors of the first wheel end module 401 and the second wheel end module 402, ultimately causing the brake calipers of the first wheel end module 401 and the second wheel end module 402 to actuate and achieve braking.

[0139] In another embodiment, the autonomous driving system issues a second parking brake command, which is transmitted to the second electronic control unit 3022 for processing via the second I / O module. The second electronic control unit 3022 controls the third DC / AC module 3033 and the fourth DC / AC module 3034 to perform voltage conversion. The second electronic control unit 3022 controls the second winding to drive the motors of the first wheel end module 401 and the second wheel end module 402, ultimately causing the brake calipers of the first wheel end module 401 and the second wheel end module 402 to actuate and achieve braking.

[0140] The electromechanical braking system provided by the present invention also includes an emergency relay, one end of which is connected to the braking control component and the other end of which is connected to the wheel end module.

[0141] In one embodiment, the electromechanical braking system proposed in this invention can realize an emergency braking mode. The emergency relay operates the wheel-end module clutch according to the received emergency braking command. The wheel-end module clutch controls the wheel-end module brake caliper to apply or release braking force. The emergency braking command is issued by the braking control component or the automatic driving system.

[0142] In this embodiment, after receiving the emergency braking command, the emergency braking train line disconnects the power supply to the wheel end module through the relay to apply emergency braking.

[0143] In this embodiment, the emergency braking mode can respond to braking needs under both manual and automatic driving conditions. Emergency braking commands include, but are not limited to, emergency braking application commands and emergency braking release commands. In emergency situations, the vehicle can brake quickly and effectively to avoid accidents or reduce their severity.

[0144] In manual driving mode, the driver issues an emergency braking command by pressing the emergency button. This command is transmitted to the first emergency relay K1 and the second emergency relay K2. After receiving the command, the relays activate the first wheel-end module clutch and the second wheel-end module clutch, which ultimately causes the brake calipers of the first wheel-end module 401 and the second wheel-end module 402 to operate and achieve braking.

[0145] In autonomous driving mode, when the autonomous driving system detects a situation requiring emergency braking, it will automatically issue a braking command. This command will also be transmitted to the first emergency relay K1 and the second emergency relay K2. After receiving the command, the relays will activate the first wheel-end module clutch and the second wheel-end module clutch, ultimately causing the brake calipers of the first wheel-end module 401 and the second wheel-end module 402 to operate and achieve braking.

[0146] In one embodiment, the electromechanical braking system proposed in this invention can realize an emergency braking mode. The bridge control module receives the emergency braking command and drives the wheel-end module motor controlled by the winding. The wheel-end module motor controls the wheel-end module brake caliper to apply or release braking force. The emergency braking command is issued by the braking control component or the automatic driving system.

[0147] In this embodiment, the emergency braking mode can respond to braking needs under both manual and autonomous driving conditions. Emergency braking commands include, but are not limited to, emergency braking application commands and emergency braking release commands. An emergency braking application command is a command issued by the driver via the brake pedal or the autonomous driving system to increase braking force in the braking system, causing the vehicle to decelerate or stop rapidly. An emergency braking release command is a command issued by the driver via the brake pedal or the autonomous driving system to reduce or release braking force in the braking system, adjusting the braking force.

[0148] In one embodiment, under manual driving conditions, the driver issues a first emergency braking command via the brake pedal. The first emergency braking command is transmitted to the first electronic control unit 3021 for processing through the first I / O module. The first electronic control unit 3021 controls the first DC / AC module 3031 and the second DC / AC module 3032 to perform voltage conversion. The first electronic control unit 3021 controls the first winding to drive the motors of the first wheel end module 401 and the second wheel end module 402, ultimately causing the brake calipers of the first wheel end module 401 and the second wheel end module 402 to actuate and achieve braking.

[0149] In another embodiment, the driver issues a second emergency braking command via the brake pedal. The second emergency braking command is transmitted to the second electronic control unit 3022 for processing via the second I / O module. The second electronic control unit 3022 controls the third DC / AC module 3033 and the fourth DC / AC module 3034 to perform voltage conversion. The second electronic control unit 3022 controls the second winding to drive the motors of the first wheel end module 401 and the second wheel end module 402, ultimately causing the brake calipers of the first wheel end module 401 and the second wheel end module 402 to actuate and achieve braking.

[0150] In one embodiment, under autonomous driving conditions, the autonomous driving system issues a first emergency braking command. The first emergency braking command is transmitted to the first electronic control unit 3021 for processing through the first I / O module. The first electronic control unit 3021 controls the first DC / AC module 3031 and the second DC / AC module 3032 to perform voltage conversion. The first electronic control unit 3021 controls the first winding to drive the motors of the first wheel end module 401 and the second wheel end module 402, ultimately causing the brake calipers of the first wheel end module 401 and the second wheel end module 402 to actuate and achieve braking.

[0151] In another embodiment, the autonomous driving system issues a second emergency braking command, which is transmitted to the second electronic control unit 3022 for processing via the second I / O module. The second electronic control unit 3022 controls the third DC / AC module 3033 and the fourth DC / AC module 3034 to perform voltage conversion. The second electronic control unit 3022 controls the second winding to drive the motors of the first wheel end module 401 and the second wheel end module 402, ultimately causing the brake calipers of the first wheel end module 401 and the second wheel end module 402 to actuate and achieve braking.

[0152] In one embodiment, the electromechanical braking system proposed in this invention can achieve a holding braking mode. The bridge control module receives the holding braking command and drives the wheel-end module motor controlled by the winding. The wheel-end module motor controls the wheel-end module brake caliper to apply or release braking force. The holding braking command is issued by the braking control component or the automatic driving system.

[0153] In this embodiment, the hold braking mode can respond to braking needs under both manual and autonomous driving conditions. The hold braking command includes, but is not limited to, hold braking application command and hold braking release command. The hold braking application command is a command issued by the driver through the brake pedal or the autonomous driving system to increase braking force in the braking system, so that the vehicle decelerates or stops quickly; the hold braking release command is a command issued by the driver through the brake pedal or the autonomous driving system to reduce or release braking force in the braking system, adjusting the braking force.

[0154] In one embodiment, under manual driving conditions, the driver issues a first holding brake command via the holding button. The first holding brake command is transmitted to the first electronic control unit 3021 for processing through the first I / O module. The first electronic control unit 3021 controls the first DC / AC module 3031 and the second DC / AC module 3032 to perform voltage conversion. The first electronic control unit 3021 controls the first winding to drive the motors of the first wheel end module 401 and the second wheel end module 402, ultimately causing the brake calipers of the first wheel end module 401 and the second wheel end module 402 to actuate and achieve braking.

[0155] In another embodiment, the driver issues a second holding brake command via the holding button. The second holding brake command is transmitted to the second electronic control unit 3022 for processing via the second I / O module. The second electronic control unit 3022 controls the third DC / AC module 3033 and the fourth DC / AC module 3034 to perform voltage conversion. The second electronic control unit 3022 controls the second winding to drive the motors of the first wheel end module 401 and the second wheel end module 402, ultimately causing the brake calipers of the first wheel end module 401 and the second wheel end module 402 to actuate and achieve braking.

[0156] In one embodiment, under autonomous driving conditions, the autonomous driving system issues a first holding brake command. The first holding brake command is transmitted to the first electronic control unit 3021 for processing through the first I / O module. The first electronic control unit 3021 controls the first DC / AC module 3031 and the second DC / AC module 3032 to perform voltage conversion. The first electronic control unit 3021 controls the first winding to drive the motors of the first wheel end module 401 and the second wheel end module 402, ultimately causing the brake calipers of the first wheel end module 401 and the second wheel end module 402 to actuate and achieve braking.

[0157] In another embodiment, the autonomous driving system issues a second holding brake command, which is transmitted to the second electronic control unit 3022 for processing via the second I / O module. The second electronic control unit 3022 controls the third DC / AC module 3033 and the fourth DC / AC module 3034 to perform voltage conversion. The second electronic control unit 3022 controls the second winding to drive the motors of the first wheel end module 401 and the second wheel end module 402, ultimately causing the brake calipers of the first wheel end module 401 and the second wheel end module 402 to actuate and achieve braking.

[0158] The electromechanical braking system and control method provided by this invention can realize multiple braking modes such as service braking, parking braking, emergency braking, emergency braking, and holding braking. It achieves rapid response through all-electric signal control and employs dual-path redundant transmission to ensure safety. Compared with traditional electro-pneumatic braking systems, it eliminates complex equipment such as air compressors, condensers, and dryers, making the system lighter and more compact. It also simplifies the installation process and has significant advantages in lightweight design, simplified operation, and high responsiveness, while also providing the benefits of safety and reliability.

[0159] Furthermore, the terms "upper," "lower," "left," "right," "top," "bottom," "horizontal," and "vertical" used in the following description should be understood as the orientations shown in the relevant paragraphs and accompanying drawings. These relative terms are for illustrative purposes only and do not imply that the described apparatus must be manufactured or operated in a specific orientation, and therefore should not be construed as limiting the invention.

[0160] It is understood that although terms such as "first," "second," and "third" may be used herein to describe various components, regions, layers, and / or parts, these components, regions, layers, and / or parts should not be limited by these terms, and these terms are only used to distinguish different components, regions, layers, and / or parts. Therefore, the first components, regions, layers, and / or parts discussed below may be referred to as second components, regions, layers, and / or parts without departing from some embodiments of the present invention.

[0161] The prior description of this disclosure is provided to enable any person skilled in the art to make or use this disclosure. Various modifications to this disclosure will be apparent to those skilled in the art, and the general principles defined herein may be applied to other variations without departing from the spirit or scope of this disclosure. Therefore, this disclosure is not intended to be limited to the examples and designs described herein, but should be accorded the widest scope consistent with the principles and novel features disclosed herein.

Claims

1. An electromechanical braking system, characterized in that, Includes several power supplies, braking control components, axle control modules, and several wheel-end modules: The aforementioned power supplies are connected to the bridge control module; The braking control component is connected to the bridge control module and is used to send braking commands to the bridge control module; The bridge control module is electrically connected to the wheel-end module and is used to control the brake calipers of the wheel-end module according to the received braking command to realize multiple braking modes.

2. The electromechanical braking system according to claim 1, characterized in that, The bridge control module includes several electronic control units and several DC / AC modules: The aforementioned electronic control units are used to receive and send braking commands; The aforementioned DC / AC modules are electrically connected to several power supplies, respectively. Each electronic control unit is electrically connected to at least two DC / AC modules to receive braking commands and send them to the corresponding DC / AC modules. The DC / AC module is electrically connected to the corresponding wheel end module and is used to convert the input DC power into AC power and provide power to the wheel end module.

3. The electromechanical braking system according to claim 2, characterized in that, The plurality of electronic control units include a first electronic control unit and a second electronic control unit; the plurality of power supplies include a second vehicle power supply and a third vehicle power supply; and the plurality of wheel end modules include a first wheel end module and a second wheel end module. The plurality of DC / AC modules include a first DC / AC module, a second DC / AC module, a third DC / AC module, and a fourth DC / AC module; The first DC / AC module is connected to the second vehicle power supply, the first electronic control unit, and the first wheel end module, and is used to convert DC power into AC power. The second DC / AC module is connected to the second vehicle power supply, the first electronic control unit, and the second wheel end module, and is used to convert DC power into AC power. The third DC / AC module is connected to the third vehicle power supply, the second electronic control unit, and the first wheel end module, and is used to convert DC power into AC power. The fourth DC / AC module is connected to the third vehicle power supply, the second electronic control unit, and the second wheel end module, and is used to convert DC power into AC power.

4. The electromechanical braking system according to claim 3, characterized in that, The braking control component issues a braking command, and the first electronic control unit receives and controls the braking command to be transmitted to the first DC / AC module and / or the second DC / AC module, driving the first wheel end module and / or the second wheel end module to achieve braking. The braking control component issues a braking command, and the second electronic control unit receives and controls the braking command to be transmitted to the third DC / AC module and / or the fourth DC / AC module, driving the first wheel end module and / or the second wheel end module to achieve braking.

5. The electromechanical braking system according to claim 3, characterized in that, The bridge control module further includes a DC / DC boost module, and the plurality of power supplies further includes a first on-board power supply. The DC / DC boost module is electrically connected to the first vehicle power supply, the first electronic control unit, the first DC / AC module, and the second DC / AC module, respectively. The DC / DC boost module boosts the output voltage of the first vehicle power supply and converts it into the input voltage of the first DC / AC module and the second DC / AC module.

6. The electromechanical braking system according to claim 1, characterized in that, The braking commands issued by the braking control component include service braking commands, parking braking commands, emergency braking commands, emergency braking commands, and holding braking commands. The various braking modes include service braking mode, parking braking mode, emergency braking mode, emergency braking mode, and holding braking mode.

7. The electromechanical braking system according to claim 6, characterized in that, The wheel-end module includes several windings, a wheel-end module motor, a wheel-end module brake caliper, and a wheel-end module clutch. The plurality of windings generate electromagnetic force within the wheel-end module motor to provide electrical energy; The wheel-end module motor is used to convert or transmit electrical energy; The wheel-end module brake caliper performs the braking action; The wheel-end module clutch is used to maintain the power output of the motor.

8. The electromechanical braking system according to claim 7, characterized in that, The bridge control module drives the wheel end module motor controlled by the winding according to the received driving braking command, and the wheel end module motor controls the wheel end module brake caliper to apply or release braking force. The braking command is issued by the braking control component or the automatic driving system.

9. The electromechanical braking system according to claim 7, characterized in that, The bridge control module drives the wheel end module motor controlled by the winding according to the parking brake command received. The wheel end module motor controls the wheel end module brake caliper to apply or release braking force. The parking braking command is issued by the braking control component or the automatic driving system.

10. The electromechanical braking system according to claim 7, characterized in that, It also includes an emergency relay, one end of which is connected to the brake control assembly and the other end to the wheel end module; The emergency relay operates the wheel-end module clutch according to the received emergency braking command, and the wheel-end module clutch controls the wheel-end module brake caliper to apply or release braking force. The emergency braking command is issued by the braking control component or the automatic driving system.

11. The electromechanical braking system according to claim 7, characterized in that, The bridge control module receives the emergency braking command and drives the wheel end module motor controlled by the winding. The wheel end module motor controls the wheel end module brake caliper to apply or release braking force. The emergency braking command is issued by the braking control component or the automatic driving system.

12. The electromechanical braking system according to claim 7, characterized in that, The bridge control module receives the holding brake command and drives the wheel end module motor controlled by the winding. The wheel end module motor controls the wheel end module brake caliper to apply or release braking force. The brake hold command is issued by the brake control component or the automatic driving system.

13. The electromechanical braking system according to claim 6, characterized in that, The braking control component issues the service braking command via analog communication; issues the emergency braking command via digital communication; issues the parking braking command via digital communication; and issues the holding braking command via digital communication.

14. The electromechanical braking system according to claim 6, characterized in that, The electromechanical braking system also includes an emergency braking train line, a first communication line, a second communication line, and an I / O acquisition hardline; The bridge control module further includes a first communication module, a second communication module, a first I / O module, and a second I / O module: The first communication module is connected to the braking control component via a first communication line and is used to transmit communication signals; The second communication module is connected to the braking control component via a second communication line and is used to transmit communication signals; The communication signals include braking commands and train information; The first IO module and the second IO module are respectively connected to the braking control component through IO acquisition hard wires for inputting and outputting control signals. The control signals include parking brake command, emergency brake command, emergency braking command, and holding brake command. The emergency braking train line is connected to the wheel end module and is used for emergency braking.

15. A vehicle, characterized in that, Including the electromechanical braking system as described in any one of claims 1-14.

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