Braking system, monitoring device and method, electronic device and storage medium, vehicle

Abstract

The present invention relates to the technical field of engineering machinery, and in particular to a braking system, a monitoring device and method, an electronic device and a storage medium, and a vehicle. The braking system includes a power output shaft, a fixed component, a clutch component, a brake component, a hydraulic drive component, and a first torque sensor; the fixed component is connected to the power output shaft; the clutch component is arranged between the fixed component and the power input component; the brake component is arranged on the power output shaft; the hydraulic drive component is used to switch the clutch component between an engaged state and a disengaged state, and to switch the brake component between an initial state and a braking state; the first torque sensor is used to detect the friction torque of the brake component and the displacement torque of the clutch component. A first torque sensor is provided in the braking system of the present application, and the first torque sensor can monitor the friction torque of the brake component and the displacement torque of the clutch component to ensure the braking performance of the braking system.

Description

Technical Field

[0001] The present invention relates to the technical field of engineering machinery, and in particular to a braking system, a monitoring device and method, an electronic device and a storage medium, and a vehicle. Background Art

[0002] The brake system is one of the important components of the car, and it is directly related to the comprehensive performance of the car and the safety of life and property. The brake system includes a brake assembly and a clutch assembly. The clutch assembly is used to transmit the power of the power input assembly to the power output shaft, and the brake assembly is used to brake the power output shaft. The braking performance of the brake assembly plays an important role in the safety of the car. Therefore, how to monitor the braking performance of the brake assembly has become a technical problem that needs to be solved urgently. Summary of the invention

[0003] In view of this, an embodiment of the present invention provides a braking system, a monitoring device and method, an electronic device and a storage medium, and a vehicle. A first torque sensor is provided in the braking system, and the first torque sensor can monitor the friction torque of the braking assembly and the clutch torque of the clutch assembly to ensure the braking performance of the braking system.

[0004] In the first aspect, the braking system provided by an embodiment of the present invention includes a power output shaft, a fixed component, a clutch component, a brake component, a hydraulic drive component and a first torque sensor; the fixed component is connected to the power output shaft; the clutch component is arranged between the fixed component and the power input component; the brake component is arranged on the power output shaft; the hydraulic drive component is located between the brake component and the clutch component, and the hydraulic drive component is used to switch the clutch component between an engaged state and a disengaged state, and to switch the brake component between an initial state and a braking state; the first torque sensor is used to detect when the clutch component enters a disengaged state from an engaged state, and the brake component enters a braking state from an initial state, the friction torque of the brake component, and the belt torque of the clutch component.

[0005] The brake assembly in the present application includes a first torque sensor. When the clutch assembly enters a disengaged state from an engaged state and the brake assembly enters a braking state from an initial state, the gearbox and other components connected to the power output shaft have a large rotational kinetic energy. The power output shaft will drive the second friction plate to rotate, so that the second friction plate and the first friction plate generate relative rotation. During the relative rotation between the second friction plate and the first friction plate, the value detected by the first torque sensor is the friction torque. When the second friction plate and the first friction plate move synchronously, the value detected by the first torque sensor is the belt torque. According to the belt torque and friction torque detected by the first torque sensor, the magnitude of the belt torque and friction torque is judged to determine the braking performance of the brake assembly, so as to avoid poor effect of the brake assembly, which leads to continuous rotation of the gearbox and other components connected to the power output shaft, causing safety hazards.

[0006] When detecting that the clutch assembly enters a disengaged state from an engaged state and the brake assembly enters a braking state from an initial state, the braking effect of the brake assembly can be judged based on the value monitored in real time by the first torque sensor, which can not only reduce risks but also reduce the difficulty of monitoring.

[0007] In one embodiment, the brake assembly includes a connecting portion, a brake plate and a plurality of first brake pads, the brake plate includes a main plate and at least one second brake pad, the connecting portion and the at least one second brake pad are relatively arranged on both sides of the main plate; the plurality of first brake pads are sleeved on the power output shaft, and the plurality of first brake pads are arranged at intervals along the axial direction of the output shaft, and a second brake pad is arranged between two adjacent first brake pads. The setting of the connecting portion can recover the kinetic energy on the power output shaft during the braking process of the brake assembly, thereby improving the utilization rate of energy.

[0008] In one embodiment, the braking system further comprises a transmission structure, the transmission structure is used to transmission-connect the connecting part with the generator, and the first torque sensor is arranged on the connecting part, the brake plate or the transmission structure. The arrangement of the transmission structure enables the kinetic energy transmitted to the connecting part to be conveniently transmitted to the generator.

[0009] In one embodiment, the power input assembly is an inner hub, and the inner hub includes an inner spline, and the inner spline is used to connect with the input shaft. A deep groove ball bearing may be provided between the power input assembly and the power output shaft, and the power input assembly and the power output shaft are connected, but the rotation between the two is actually connected through a clutch assembly.

[0010] In one embodiment, the brake system further comprises a second torque sensor and a third torque sensor, wherein the second torque sensor is arranged on the power output shaft, and the third torque sensor is arranged on the power input assembly. The performance of the clutch assembly can be determined according to the torque of the power output shaft detected by the second torque sensor and the third torque sensor and the torque of the power input assembly.

[0011] In one embodiment, the brake system further comprises a first speed sensor and a second speed sensor, wherein the first speed sensor is arranged on the power output shaft, and the second speed sensor is arranged on the power input assembly. The performance of the clutch assembly can be determined according to the speed of the power output shaft detected by the first speed sensor and the speed of the power input assembly detected by the second speed sensor.

[0012] In one embodiment, the hydraulic drive assembly includes a piston and a brake pin; the brake pin is fixed to the piston, the piston is sleeved on the power output shaft, the piston is located between the clutch assembly and the brake assembly, and the piston can move along the axial direction of the power output shaft under the drive of the working oil, the piston is used to press the clutch assembly so that the clutch assembly is in an engaged state, and the brake pin is used to press the brake assembly so that the brake assembly is in a braking state.

[0013] In one embodiment, the hydraulic drive assembly further includes at least one return spring, one end of the return spring is arranged on a side of the piston away from the brake assembly, and the other end of the return spring is arranged on a side of the power output shaft close to the power input assembly.

[0014] In one embodiment, along the axial direction of the power output shaft, the second friction plate located on the side away from the brake assembly is a fixed friction plate, the fixed friction plate is fixed to the fixed assembly, and the second friction plate located between the fixed friction plate and the piston can move along the axial direction of the power output shaft.

[0015] In a second aspect, the present application also provides a method for monitoring a braking system, comprising the following steps:

[0016] Obtain the working status of the clutch assembly and the brake assembly;

[0017] When the clutch assembly switches from an engaged state to a disengaged state, and the brake assembly switches from an initial state to a brake state, the friction torque of the brake assembly and the belt torque of the clutch assembly are obtained;

[0018] The braking performance of the brake assembly is determined based on the magnitudes of the friction torque and the belt torque.

[0019] The friction torque is the value detected by the first torque sensor when the first brake pad and the brake plate included in the brake assembly rotate relative to each other. The belt torque is the value detected by the first torque sensor when the first brake pad and the brake plate included in the brake assembly rotate synchronously.

[0020] The first torque sensor monitors the torque transmitted by the brake assembly in real time. The magnitude of the friction torque and the belt torque can be determined based on the torque spectrum monitored by the first torque sensor to monitor the braking performance of the brake assembly. The values ​​of the two smooth parts in the spectrum are the friction torque and the belt torque, where the larger value is the friction torque and the smaller value is the belt torque. The value of the smooth part can be compared with the values ​​at other times.

[0021] In a third aspect, the present application further provides a monitoring device for a brake system, the monitoring device comprising:

[0022] A sensor module, used to obtain the working status of the clutch assembly and the brake assembly, and to obtain the friction torque of the brake assembly and the belt torque of the clutch assembly when the clutch assembly switches from the engaged state to the disengaged state and the brake assembly switches from the initial state to the braking state;

[0023] The data processing module is used to determine the braking performance of the brake assembly according to the magnitude of the friction torque and the belt torque.

[0024] In a fourth aspect, the present application further provides an electronic device comprising: a processor and a memory, wherein the memory is used to store programs executable by the processor, and the processor is used to read the programs in the memory and execute the steps of the braking system monitoring method as in any one of the embodiments in the second aspect.

[0025] In a fifth aspect, an embodiment of the present invention provides a computer-readable storage medium, wherein the computer-readable storage medium stores computer instructions. When the computer instructions are executed on a computer, the computer executes the steps of the method for monitoring a braking system as described in any one of the embodiments in the second aspect above.

[0026] In a sixth aspect, an embodiment of the present invention provides a vehicle, comprising an electric motor and a braking system as described in any one of the embodiments in the first aspect above, wherein the output shaft of the electric motor is transmission-connected to the power input assembly.

[0027] For the technical effects that may be achieved by the monitoring device of the braking system disclosed in the third aspect, the electronic device disclosed in the fourth aspect, the computer-readable storage medium disclosed in the fifth aspect, and the vehicle disclosed in the sixth aspect, please refer to the description of the technical effects that can be achieved by the first aspect or various possible schemes in the first aspect, and no repetition will be given here. BRIEF DESCRIPTION OF THE DRAWINGS

[0028] Figure 1 A schematic diagram of the structure of a braking system provided by an embodiment of the present invention;

[0029] Figure 2 A cross-sectional view of a brake system provided by an embodiment of the present invention;

[0030] Figure 3 A cross-sectional view of a first friction plate in a brake system provided by an embodiment of the present invention;

[0031] Figure 4 A cross-sectional view of a brake assembly provided by an embodiment of the present invention;

[0032] Figure 5 A flow chart of a method for monitoring a braking system provided by an embodiment of the present invention;

[0033] Figure 6 A schematic diagram of the module structure of a monitoring device for a brake system provided by an embodiment of the present invention;

[0034] Figure 7 A schematic diagram of the structure of an electronic device provided by an embodiment of the present invention.

[0035] Icons: 1-sensing module; 2-data processing module; 3-electronic equipment; 301-processor; 302-memory; 303-bus; 10-power output shaft; 20-fixing assembly; 30-clutch assembly; 31-first friction plate; 310-core plate; 311-wear-resistant layer; 312-oil groove; 32-second friction plate; 40-brake assembly; 41-connecting part; 42-brake plate; 420-main board; 421-second brake pad; 43-first brake pad; 44-transmission structure; 440-first gear; 441-transmission shaft; 442-second gear; 50-hydraulic drive assembly; 51-piston; 52-brake pin; 53-reset spring; 60-power input assembly; 70-first torque sensor; 80-deep groove ball bearing. DETAILED DESCRIPTION

[0036] The following will be combined with the drawings in the embodiments of the present invention to clearly and completely describe the technical solutions in the embodiments of the present invention. Obviously, the described embodiments are only part of the embodiments of the present invention, not all of the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the present invention.

[0037] Figure 1 A schematic structural diagram of a braking system provided in an embodiment of the present invention. Figure 2 for Figure 1 The braking system includes a fixed component 20, a power input component 60, a power output shaft 10, a hydraulic drive component 50, a clutch component 30, a brake component 40 and a first torque sensor 70, wherein the power output shaft 10 is used to connect with the gearbox, the fixed component 20, the hydraulic drive component 50 and the brake component 40 are all arranged on the power output shaft 10, the power input component 60 is arranged at one end of the power output shaft 10, a deep groove ball bearing 80 is arranged between the power input component 60 and the power output shaft 10, so that the power of the power input component 60 will not be directly transmitted to the power output shaft 10, part of the fixed component 20 is located between the brake component 40 and the power input component 60, the fixed component 20 is fixedly connected to the power output shaft 10, and the clutch component 30 is arranged between the fixed component 20 and the power input component 60. The hydraulic drive component 50 can drive the clutch component 30 to switch between an engaged state and a disengaged state. When the clutch component 30 is in the engaged state, the fixed component 20 and the power input component 60 are connected through the clutch component transmission. The hydraulic drive component 50 can also drive the brake component 40 to switch between a braking state and an initial state. The first torque sensor 70 is used to detect when the clutch component enters a disengaged state from an engaged state and the brake component enters a braking state from an initial state, the friction torque of the brake component 40, and the belt torque of the clutch component 30.

[0038] The clutch assembly 30 includes a plurality of first friction plates 31 and a plurality of second friction plates 32. The plurality of first friction plates 31 are sleeved on the power input assembly 60, and the plurality of second friction plates 32 are arranged on the fixed assembly 20. The plurality of first friction plates 31 and the plurality of second friction plates 32 are arranged alternately along the axis direction of the power output shaft. Lubricating oil exists between the first friction plates 31 and the second friction plates 32. When the clutch assembly 30 enters the disengaged state from the engaged state, the clutch assembly 30 generates a belt torque under the shearing effect of the lubricating oil.

[0039] More specifically, when the clutch assembly 30 enters the disengaged state from the engaged state and the brake assembly 40 enters the braking state from the initial state, the gearbox and other components connected to the power output shaft 10 have a large rotational kinetic energy, and the power output shaft 10 will drive the first brake pad 43 included in the brake assembly 40 to rotate, so that the first brake pad 43 and the second brake pad 421 generate relative rotation. During the relative rotation between the first brake pad 43 and the second brake pad 421, the value detected by the first torque sensor 70 is the friction torque. When the first brake pad 43 and the second brake pad 421 move synchronously, the value detected by the first torque sensor 70 is the belt torque. According to the belt torque and friction torque detected by the first torque sensor 70, the magnitude of the belt torque and friction torque is judged to determine the braking performance of the brake assembly 40, so as to avoid the poor braking effect of the brake assembly 40, which leads to the continuous rotation of the gearbox and other components connected to the power output shaft 10, causing safety hazards.

[0040] Figure 3 This is a schematic diagram of the structure of the first friction plate provided in the embodiment of the present application, referring to Figures 1 to 3 In the above embodiment, the first friction plate 31 includes a core plate 310 and a plurality of wear-resistant layers 311 disposed on both sides of the core plate 310. The wear-resistant layers 311 on both sides of the core plate 310 are symmetrically disposed, and the plurality of wear-resistant layers 311 on each side are arranged at intervals along the second direction, and the gap between two adjacent wear-resistant layers 311 forms an oil groove 312. The oil groove 312 is used to fill the lubricating oil, which can take away the heat generated between the wear-resistant layer 311 and the second friction plate 32, that is, the lubricating oil can take away the heat generated between the first friction plate 31 and the second friction plate 32, and the depth of the oil groove 312 needs to be within a set range to ensure that there is enough lubricating oil in the oil groove.

[0041] Along the axial direction of the power output shaft 10, the second friction plate 32 located on the side away from the brake assembly 40 is a fixed friction plate, which is fixedly connected to the fixed assembly 20. The remaining second friction plates 32 are also arranged on the fixed assembly 20, and the remaining second friction plates 32 are displaced between the fixed friction plates and the hydraulic drive assembly, and can also move relative to the fixed assembly 40 along the axial direction of the power output shaft 10.

[0042] Each second friction plate 32 and its adjacent first friction plate 31 may form a friction pair. It can be understood that along the axial direction of the power output shaft 10, two friction pairs are formed between the first friction plate 31 and the two second friction plates 32 on both sides thereof, and when the clutch assembly is in the disengaged state, there is a gap between each second friction plate 32 and its adjacent first friction plate 31. In order to detect the gap between the second friction plate 32 and its adjacent first friction plate 31, a mark may be provided on the edge of the second friction plate 32. When the clutch assembly 30 enters the engaged state from the disengaged state, or enters the disengaged state from the engaged state, the gap change between the second friction plate 32 and its adjacent first friction plate 31 is determined according to the distance moved by the mark position on the second friction plate 32, thereby determining the wear amount of each friction pair.

[0043] In the above embodiment, the hydraulic drive assembly 50 includes a piston 51, a brake pin 52 and at least one return spring 53, one end of the brake pin 52 is fixed to the piston 51, and the other end of the brake pin 52 extends to the side where the brake assembly 40 is located. The piston 51 is sleeved on the power output shaft 10, and the piston 51 is located between the clutch assembly 30 and the brake assembly 40. The piston 51 can move along the axial direction of the power output shaft 10 under the drive of the working oil. One end of the return spring 53 is arranged on the side of the piston 51 away from the brake assembly, and the other end of the return spring 53 is arranged on the side of the power output shaft 10 close to the power input assembly 60. Specifically, when the clutch assembly 30 enters the engagement state from the disengaged state, the piston 51 moves to the side of the second friction plate 32 under the drive of the working oil, so as to drive the friction between the second friction plate 32 and the first friction plate 31, and then output the kinetic energy of the power input assembly 60 to the power output shaft 10 through the clutch assembly 30. When the piston 51 moves toward one side of the second friction plate 32 driven by the working oil, at least one return spring 53 is compressed by the pressure of the piston 51. When the clutch assembly 30 enters the disengaged state from the engaged state, the working oil pressure on the piston 51 disappears. During the resetting process, the return spring 53 can drive the piston 51 and the brake pin 52 arranged on the piston 51 to move. The brake pin 52 passes through the fixing assembly 20 and contacts the first brake pad 43 included in the brake assembly 40 to realize the braking of the brake assembly 40.

[0044] In the above-mentioned embodiment, the power input assembly 60 may be an inner hub, and the inner hub includes an inner spline, and the inner spline is used to connect with the input shaft to realize the input of power. From the side of the power output shaft 10 away from the power input assembly 60 to the direction of the power input assembly 60, the outer diameter of the power output shaft 10 may be distributed in a stepped shape, that is, along the direction from the side of the power output shaft 10 away from the power input assembly 60 to the power input assembly 60, the outer diameter of the power output shaft 10 gradually decreases. More specifically, the outer side of the power output shaft 10 may include a first step surface, a second step surface, a third step surface and a fourth step surface, and the first step surface, the second step surface, the third step surface and the fourth step surface are connected in sequence, the brake assembly 40 is arranged on the first step surface, one end of the fixed assembly 20 is arranged on the second step surface, and the other end of the fixed assembly 20 extends to the side away from the brake assembly 40, the piston 51 is arranged on the third step surface, one end of the return spring 53 is fixed on the third step surface, and the other end of the return spring 53 is fixed on the piston 52, and a deep groove ball bearing 80 is arranged on the fourth step surface, and the power input assembly 60 is connected to one end of the power output shaft 10 through the deep groove ball bearing 80.

[0045] Figure 4 This is a cross-sectional view of a brake assembly 40 provided in an embodiment of the present application. Figure 1 , Figure 2 and Figure 4 The brake assembly 40 includes a connecting portion 41, a brake plate 42 and a plurality of first brake pads 43, wherein the plurality of first brake pads 43 are sleeved on the power output shaft 10, and the plurality of first brake pads 43 are arranged at intervals along the axial direction of the power output shaft 10. The brake plate 42 includes a main board 420 and at least one second brake pad 421, wherein at least one second brake pad 421 is arranged on the inner side of the main board 420, and the connecting portion 41 is arranged on the outer side of the main board 420. The connecting portion 41 is used for transmission connection with the generator, and along the axial direction of the power output shaft 10, first brake pads 43 are arranged on both sides of each second brake pad 421.

[0046] The brake assembly 40 has an initial state and a braking state. When the brake assembly 40 is in the initial state, there is a gap between the first brake pad 43 and the second brake pad 421, and no friction torque is generated between the first brake pad 43 and the second brake pad 421. When the brake assembly 40 enters the braking state from the initial state, the first brake pad 43 close to the hydraulic drive assembly 50 is driven by the hydraulic drive assembly 50, so that the first brake pad 43 has a force away from the hydraulic drive assembly 50 to squeeze the second brake pad and the remaining first brake pads 43, so that friction is generated between the first brake pad 43 and the second brake pad 421, thereby achieving braking of the power output shaft 10.

[0047] When the hydraulic drive component 50 starts to drive the brake component 40 to brake the power output shaft 10, and in the process when the power output shaft 10 stops rotating, the second brake pad 421 will rotate driven by the friction force of the first brake pad 43. The rotation of the second brake pad 421 can drive the connecting part 41 installed on the main board 420, and the connecting part 41 can transfer the kinetic energy of rotation to the generator to drive the generator to generate electricity and realize kinetic energy recovery.

[0048] When the brake assembly 40 is arranged on the power output shaft 10, at least one first keyway is arranged on the first brake pad 43 away from the clutch assembly 30 along the axial direction of the power output shaft 10, and at least one second keyway is arranged on the power output shaft 10, at least one first keyway corresponds to at least one second keyway, and the first brake pad 43 away from the clutch assembly 30 is arranged in the first keyway and the second keyway through a spline to connect the first brake pad away from the clutch assembly 30 to the power output shaft 10. The remaining first brake pads 43 are sleeved on the power output shaft 10, and the remaining first brake pads 43 can move axially on the power output shaft 10, so that when the hydraulic drive assembly 50 drives the first brake pad 43 close to the clutch assembly 30, the first brake pad 43 can press the second brake pad 421, so that friction is generated between the first brake pad 43 and the second brake pad 421, and the power output shaft 10 is braked.

[0049] In order to ensure the stability of kinetic energy transmission, the brake assembly 40 further includes a transmission structure 44 , one end of the transmission structure 44 is transmission-connected to the connecting portion 41 , and the other end of the transmission structure 44 is connected to the generator.

[0050] The connecting part 41 can be a gear ring, a sprocket or a pulley. When the connecting part 41 is a gear ring, the transmission structure 44 includes a first gear 440, a transmission shaft 441 and a second gear 442. The transmission shaft 441 transmits and connects the first gear 440 and the second gear 442. The first gear 440 meshes with the gear ring, and the second gear 442 is used for transmission connection with the input end of the generator. When the brake assembly 40 is in a braking state, the main board 420 will rotate, thereby driving the gear ring fixed to the outside of the main board 420 to rotate. The rotation of the gear ring can drive the first gear 440 meshed with the gear ring. The first gear 440 drives the second gear 442 to rotate through the transmission shaft 441, thereby transmitting kinetic energy to the generator to achieve kinetic energy recovery.

[0051] In the above embodiments, the first torque sensor 70 can be arranged on the connecting part 41, the brake plate 42 or the transmission structure 44. More specifically, the first torque sensor 70 can be arranged on any one of the connecting part 41, the brake plate 42, the first gear 440 or the transmission shaft 441.

[0052] In the above embodiment, the lubricating oil in the clutch assembly 30 generates the displacement torque. It can also be verified by the following formula:

[0053]

[0054] Wherein, z is the number of friction pairs in the clutch assembly 30, and the dynamic viscosity of the lubricating oil is , the angular velocity of the power input assembly 60 is The inner diameter of the contact surface between the first friction plate 31 and the second friction plate 32 is The outer diameter is .

[0055] The friction torque generated between the first brake pad 43 and the second brake pad 421 in the brake assembly It can also be verified by the following formula:

[0056]

[0057] The friction torque between the first brake pad 43 and the second brake pad 421 in the brake assembly , the friction coefficient of the second brake pad 421 is f, the number of friction pairs in the brake assembly 40 is y, and the average radius of the contact surface between the first brake pad 43 and the second brake pad 421 is , the elastic force of the return spring 53 is F.

[0058] In one embodiment, the braking system further includes a first speed sensor (not shown in the figure), a second speed sensor (not shown in the figure), a second torque sensor (not shown in the figure) and a third torque sensor (not shown in the figure). The first speed sensor is arranged on the power output shaft 10, the second speed sensor is arranged on the power input assembly 60, the second torque sensor is arranged on the power output shaft 10, and the third torque sensor is arranged on the power input assembly 60. The first speed sensor is used to detect the speed of the power output shaft 10. The second speed sensor is used to detect the speed of the power input assembly 60. The second torque sensor is used to detect the torque of the power output shaft 10 The third torque sensor is used to detect the torque of the power input assembly 60 When the clutch assembly in the brake system is working, that is, when the clutch assembly 30 is in the engaged state, the torque of the power input assembly 60 needs to be satisfied. Torque of the power output shaft 10 The difference between them is less than or equal to the maximum allowed difference ,Right now The speed of the power input assembly 60 and the speed of the power output shaft 10 The difference between them is less than or equal to the maximum allowed difference ,Right now .when or , it can be explained that the wear between the first friction plate 31 and the second friction plate 32 in the clutch assembly 30 is relatively serious, and the clutch assembly 30 cannot output a sufficiently large torque and speed. At this time, it is necessary to increase the working oil pressure and increase the force applied by the piston 51 to the clutch assembly 30, thereby increasing the friction between the first friction plate 31 and the second friction plate 32 in the clutch assembly 30 to reduce the speed of the power input assembly 60. Speed ​​of the power output shaft The difference between the torque of the power input assembly 60 Torque of the power output shaft 10 Therefore, the arrangement of the first speed sensor, the second speed sensor, the second torque sensor and the third torque sensor can also detect the state of the clutch assembly 30 in real time to ensure the stability of the braking system.

[0059] The third torque sensor and the second speed sensor may be simultaneously arranged on the inner side or the outer side of the power input assembly 60 , or one of the third torque sensor and the second speed sensor may be arranged on the inner side and the other on the outer side of the power input assembly 60 .

[0060] Figure 5 This is a flow chart of a brake system monitoring method provided by an embodiment of the present invention. Figure 5 The present application also provides a method for detecting the above-mentioned brake assembly, comprising:

[0061] S10: Obtaining the working status of the clutch component and the brake component:

[0062] S20: when the clutch assembly is switched from the engaged state to the disengaged state, and the brake assembly is switched from the initial state to the brake state, the friction torque of the brake assembly and the pulley torque of the clutch assembly are obtained;

[0063] S30: judging the braking performance of the brake assembly according to the magnitude of the friction torque and the belt torque.

[0064] The friction torque is the value detected by the first torque sensor when the first brake pad and the brake plate included in the brake assembly rotate relative to each other. The belt torque is the value detected by the first torque sensor when the first brake pad and the brake plate included in the brake assembly rotate synchronously.

[0065] In the above embodiment, the first torque sensor monitors the torque transmitted by the brake assembly in real time, and the magnitude of the friction torque and the belt torque can be determined according to the torque spectrum monitored by the first torque sensor, so as to monitor the performance of the brake assembly. The values ​​of the two smooth parts in the spectrum are the friction torque and the belt torque, wherein the larger value is the friction torque and the smaller value is the belt torque, and the value of the smooth part can be compared with the values ​​at other times.

[0066] Based on the same concept, an embodiment of the present invention also provides a monitoring device for a braking system. Since the device is the device in the method in the embodiment of the present invention, and the principle of solving the problem by the device is similar to that of the method, the implementation of the device can refer to the implementation of the method, and the repeated parts will not be repeated.

[0067] like Figure 6 As shown, the above monitoring device includes the following modules:

[0068] The sensor module 1 is used to obtain the working status of the clutch assembly and the brake assembly. When the clutch assembly switches from the engaged state to the disengaged state and the brake assembly switches from the initial state to the braking state, the friction torque of the brake assembly and the belt torque of the clutch assembly are obtained;

[0069] The data processing module 2 is used to determine the braking performance of the brake assembly according to the magnitude of the friction torque and the belt torque.

[0070] An embodiment of the present invention further provides an electronic device. The electronic device may be a server, or a terminal such as a mobile terminal or a computer. Exemplarily, the electronic device may be a vehicle-mounted control device.

[0071] The electronic device at least includes a memory for storing data and a processor for data processing. Among them, for the processor for data processing, when executing the processing, it can be implemented by MCU (English: Microcontroller Unit, Chinese: Micro Control Unit), CPU (English: Central Processing Unit, Chinese: Central Processing Unit), DSP (English: Digital Signal Processor, Chinese: Digital Signal Processor), FPGA (English: Field Programmable Gate Array, Chinese: Field Programmable Gate Array), etc. For the memory, the memory stores an operation instruction, which can be a computer executable code, and the operation instruction is used to implement each step in the process of the monitoring method of the above-mentioned embodiment of the present invention.

[0072] Figure 7 FIG. 1 is a schematic diagram of the structure of an electronic device provided by an embodiment of the present invention. Figure 7 As shown, in the embodiment of the present invention, the electronic device 3 includes: a processor 301, a memory 302 and a bus 303; the processor 301 and the memory 302 are connected via the bus 303, and the bus 303 is used to transmit data between the processor 301 and the memory 303.

[0073] The memory 302 can be used to store software programs and modules, such as program instructions / modules corresponding to the monitoring method in the embodiment of the present invention. The processor 301 executes various functional applications and data processing of the electronic device 3 by running the software programs and modules stored in the memory 302, such as the monitoring method provided in the embodiment of the present invention. The memory 302 can mainly include a program storage area and a data storage area, wherein the program storage area can store an operating system, at least one application application, etc.; the data storage area can store data created according to the use of the electronic device 3 (such as reference image set and other related data), etc. In addition, the memory 302 can include a high-speed random access memory, and can also include a non-volatile memory, such as at least one disk storage device, a flash memory device, or other volatile solid-state storage devices.

[0074] The processor 301 is the control center of the electronic device 3, and uses the bus 303 and various interfaces and lines to connect various parts of the entire electronic device 3, and executes various functions of the electronic device 3 and processes data by running or executing software programs and / or modules stored in the memory 302, and calling data stored in the memory 302. Optionally, the processor 301 may include one or more processing units, such as a CPU, a digital processing unit, etc.

[0075] The embodiment of the present invention further provides a computing device readable storage medium for the monitoring method of the brake system, that is, the content is not lost after power failure. The storage medium stores a software program, including program code, and when the program code is run on the computing device, the software program can implement any of the solutions of the monitoring method of the brake system provided in the embodiment of the present invention when read and executed by one or more processors.

[0076] The present invention further provides a vehicle, comprising an electric motor and a braking system as described in any one of the above embodiments, wherein an output shaft of the electric motor is drivingly connected to a power input assembly.

[0077] Obviously, those skilled in the art can make various changes and modifications to the embodiments of the present invention without departing from the spirit and scope of the present invention. Thus, if these modifications and variations of the present invention fall within the scope of the claims of the present invention and their equivalents, the present invention is also intended to include these modifications and variations.

Claims

1. A braking system, characterized in that: include: Power output shaft; A fixing assembly connected to the power output shaft; A brake assembly, wherein the brake assembly is arranged on the power output shaft; A clutch assembly, the clutch assembly being disposed between the fixed assembly and the power input assembly; A hydraulic drive assembly, the hydraulic drive assembly is located between the brake assembly and the clutch assembly, the hydraulic drive assembly is used to switch the clutch assembly between an engaged state and a disengaged state, and is used to switch the brake assembly between an initial state and a brake state; The brake assembly comprises a connecting portion, a brake plate and a plurality of first brake pads, the brake plate comprises a main plate and at least one second brake pad, the connecting portion and the at least one second brake pad are arranged on two sides of the main plate opposite to each other; The connecting portion is used for transmission connection with the generator; The braking system further comprises a transmission structure, wherein the transmission structure is used for transmission-connecting the connecting part with the generator; A first torque sensor, the first torque sensor is used to detect the friction torque of the brake assembly and the belt torque of the clutch assembly when the clutch assembly enters a disengaged state from an engaged state and the brake assembly enters a braking state from an initial state. The first torque sensor is arranged on the connecting part, the brake plate or the transmission structure; the multiple first brake pads are mounted on the power output shaft, and the multiple first brake pads are arranged at intervals along the axial direction of the output shaft, and a second brake pad is arranged between two adjacent first brake pads.

2. The braking system according to claim 1, characterized in that: The power input assembly is an inner hub, and the inner hub includes an inner spline, and the inner spline is used to connect with the input shaft.

3. The braking system according to claim 1, characterized in that: The braking system further includes a second torque sensor and a third torque sensor, wherein the second torque sensor is disposed on the power output shaft, and the third torque sensor is disposed on the power input assembly.

4. The braking system according to claim 3, characterized in that: The braking system further includes a first rotation speed sensor and a second rotation speed sensor, wherein the first rotation speed sensor is disposed on the power output shaft, and the second rotation speed sensor is disposed on the power input assembly.

5. The braking system according to any one of claims 1 to 4, characterized in that: The hydraulic drive assembly includes a piston and a brake pin; The brake pin is fixed to the piston, the piston is sleeved on the power output shaft, the piston is located between the clutch assembly and the brake assembly, and the piston can move along the axial direction of the power output shaft under the drive of the working oil. The piston is used to press the clutch assembly so that the clutch assembly is in an engaged state, and the brake pin is used to press the brake assembly so that the brake assembly is in a braking state.

6. The braking system according to claim 5, characterized in that: The hydraulic drive assembly further comprises at least one return spring, one end of which is arranged on a side of the piston away from the brake assembly, and the other end of which is arranged on a side of the power output shaft close to the power input assembly.

7. The braking system according to claim 5, characterized in that: Along the axial direction of the power output shaft, the second friction plate located on the side away from the brake assembly is a fixed friction plate, which is fixed to the fixed assembly. The second friction plate located between the fixed friction plate and the piston can move along the axial direction of the power output shaft.

8. A method for monitoring a brake system according to any one of claims 1 to 7, characterized in that: include: Obtain the working status of the clutch assembly and the brake assembly; When the clutch assembly switches from an engaged state to a disengaged state, and the brake assembly switches from an initial state to a brake state, the friction torque of the brake assembly and the belt torque of the clutch assembly are obtained; The braking performance of the brake assembly is determined based on the magnitudes of the friction torque and the belt torque.

9. The method for monitoring a brake system according to claim 8, characterized in that: The friction torque is a value detected by the first torque sensor when there is relative rotation between the first brake pad and the brake plate included in the brake assembly.

10. The method for monitoring a brake system according to claim 8, characterized in that: The belt torque is a value detected by the first torque sensor when the first brake pad and the brake plate included in the brake assembly rotate synchronously.

11. A monitoring device for a brake system according to any one of claims 1 to 7, characterized in that: include: A sensor module, used to obtain the working status of the clutch assembly and the brake assembly, and to obtain the friction torque of the brake assembly and the belt torque of the clutch assembly when the clutch assembly switches from the engaged state to the disengaged state and the brake assembly switches from the initial state to the braking state; The data processing module is used to determine the braking performance of the brake assembly according to the magnitude of the friction torque and the belt torque.

12. An electronic device, characterized in that: The electronic device comprises a processor and a memory, wherein the memory is used to store a program executable by the processor, and the processor is used to read the program in the memory and execute the steps of the braking system monitoring method according to any one of claims 8 to 10.

13. A computer-readable storage medium, characterized in that: include: The computer-readable storage medium stores computer instructions, and when the computer instructions are executed on a computer, the computer executes the steps of the method for monitoring a braking system as described in any one of claims 8 to 10.

14. A vehicle, characterized in that: It comprises an electric motor and a braking system as claimed in any one of claims 1 to 7, wherein the output shaft of the electric motor is drivingly connected to the power input assembly.

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