Vehicle auxiliary braking control method and device

Abstract

The invention provides a control method and device for auxiliary braking of a vehicle. The control method comprises the steps that whether a brake auxiliary switch signal of the vehicle is an opening signal or not is determined; if the brake auxiliary switch signal is a turn-off signal, a retarder of the vehicle is controlled to operate based on a retarder gear signal of the vehicle; if the brake auxiliary switch signal is a turn-on signal, whether an engine cylinder of the vehicle is controlled to operate or not is determined based on a brake signal of the vehicle, and whether a retarder is controlled to operate or not is determined based on a retarder handle signal of the vehicle. By adopting the technical scheme provided by the invention, the driving risk, the operation cost and the intervention frequency of the auxiliary braking system are reduced, and the driving comfort is improved.

Description

Technical Field

[0001] The present application relates to the technical field of vehicle auxiliary braking, and in particular to a control method and device for vehicle auxiliary braking. Background Art

[0002] Wide-body mining dump trucks operate under heavy loads for extended periods in mining areas, facing complex and harsh road conditions, including long, continuous downhill descents and frequent following traffic, which require constant braking. This high-load operation causes the wheel hub brake system to heat up dramatically, significantly reducing braking efficiency and impacting driving safety. It also causes abnormal wear on key components like tires and brake pads, significantly increasing maintenance costs and reducing availability. Currently, brake assist systems are used to assist with braking.

[0003] However, during operation, the brake assist system requires manual activation by the driver, which places high demands on the operator's ability to judge working conditions and operational proficiency, and the auxiliary braking system cannot intervene in a timely manner. In addition, the multiple braking devices in the brake assist system cannot perform auxiliary braking synchronously, reducing braking efficiency. Summary of the Invention

[0004] In view of this, the embodiments of the present application provide a method and device for controlling vehicle auxiliary braking, which reduces driving risks, operating costs and the intervention frequency of the auxiliary braking system, and improves driving comfort.

[0005] This application mainly includes the following aspects: In a first aspect, an embodiment of the present application provides a method for controlling vehicle auxiliary braking, the method comprising: Determine whether the vehicle's brake assist switch signal is an on signal; If the brake assist switch signal is an off signal, the retarder of the vehicle is controlled to operate based on the retarder gear position signal of the vehicle; If the brake assist switch signal is an on signal, it is determined whether to control the engine cylinder of the vehicle to operate based on the brake signal of the vehicle, and whether to control the retarder to operate based on the retarder handle signal of the vehicle.

[0006] Furthermore, the determining whether to control the operation of the engine cylinder of the vehicle based on the brake signal of the vehicle includes: When a brake signal of the vehicle is received, determining whether the vehicle speed is greater than a preset vehicle speed threshold and whether the engine speed of the vehicle is greater than a preset speed threshold; If the vehicle speed is greater than a preset vehicle speed threshold and the engine speed is greater than a preset engine speed threshold, the engine cylinders of the vehicle are controlled to operate; if the vehicle speed is not greater than the preset vehicle speed threshold or the engine speed is not greater than the preset engine speed threshold, the off state of the engine cylinders is maintained.

[0007] Further, the control method further comprises: If the vehicle speed is greater than a preset vehicle speed threshold and the engine speed is greater than a preset engine speed threshold, the engine cylinders of the vehicle are controlled to operate; if the vehicle speed is not greater than the preset vehicle speed threshold or the engine speed is not greater than the preset engine speed threshold, the off state of the engine cylinders is maintained. When the vehicle speed is greater than a preset vehicle speed threshold and the engine speed is greater than a preset engine speed threshold, the engine cylinders of the vehicle are controlled to operate; if the vehicle speed is not greater than the preset vehicle speed threshold or the engine speed is not greater than the preset engine speed threshold, the off state of the engine cylinders is maintained. If the vehicle speed is greater than a preset vehicle speed threshold and the engine speed is greater than a preset engine speed threshold, the engine cylinders of the vehicle are controlled to operate; if the vehicle speed is not greater than the preset vehicle speed threshold or the engine speed is not greater than the preset engine speed threshold, the off state of the engine cylinders is maintained.

[0008] Further, the control method further comprises: If the vehicle speed is greater than a preset vehicle speed threshold and the engine speed is greater than a preset engine speed threshold, the engine cylinders of the vehicle are controlled to operate; if the vehicle speed is not greater than the preset vehicle speed threshold or the engine speed is not greater than the preset engine speed threshold, the off state of the engine cylinders is maintained. If the vehicle speed is greater than a preset vehicle speed threshold and the engine speed is greater than a preset engine speed threshold, the engine cylinders of the vehicle are controlled to operate; if the vehicle speed is not greater than the preset vehicle speed threshold or the engine speed is not greater than the preset engine speed threshold, the off state of the engine cylinders is maintained. If the vehicle speed is greater than a preset vehicle speed threshold and the engine speed is greater than a preset engine speed threshold, the engine cylinders of the vehicle are controlled to operate; if the vehicle speed is not greater than the preset vehicle speed threshold or the engine speed is not greater than the preset engine speed threshold, the off state of the engine cylinders is maintained. If the vehicle speed is greater than a preset vehicle speed threshold and the engine speed is greater than a preset engine speed threshold, the engine cylinders of the vehicle are controlled to operate; if the vehicle speed is not greater than the preset vehicle speed threshold or the engine speed is not greater than the preset engine speed threshold, the off state of the engine cylinders is maintained.

[0009] Further, the control method further comprises: If the vehicle speed is greater than a preset vehicle speed threshold and the engine speed is greater than a preset engine speed threshold, the engine cylinders of the vehicle are controlled to operate; if the vehicle speed is not greater than the preset vehicle speed threshold or the engine speed is not greater than the preset engine speed threshold, the off state of the engine cylinders is maintained. If the vehicle speed is greater than a preset vehicle speed threshold and the engine speed is greater than a preset engine speed threshold, the engine cylinders of the vehicle are controlled to operate; if the vehicle speed is not greater than the preset vehicle speed threshold or the engine speed is not greater than the preset engine speed threshold, the off state of the engine cylinders is maintained. If the vehicle speed is greater than a preset vehicle speed threshold and the engine speed is greater than a preset engine speed threshold, the engine cylinders of the vehicle are controlled to operate; if the vehicle speed is not greater than the preset vehicle speed threshold or the engine speed is not greater than the preset engine speed threshold, the off state of the engine cylinders is maintained. If the vehicle speed is greater than a preset vehicle speed threshold and the engine speed is greater than a preset engine speed threshold, the engine cylinders of the vehicle are controlled to operate; if the vehicle speed is not greater than the preset vehicle speed threshold or the engine speed is not greater than the preset engine speed threshold, the off state of the engine cylinders is maintained.

[0010] Further, if the vehicle speed is greater than a preset vehicle speed threshold and the engine speed is greater than a preset engine speed threshold, the engine cylinders of the vehicle are controlled to operate; if the vehicle speed is not greater than the preset vehicle speed threshold or the engine speed is not greater than the preset engine speed threshold, the off state of the engine cylinders is maintained. If the vehicle speed is greater than a preset vehicle speed threshold and the engine speed is greater than a preset engine speed threshold, the engine cylinders of the vehicle are controlled to operate; if the vehicle speed is not greater than the preset vehicle speed threshold or the engine speed is not greater than the preset engine speed threshold, the off state of the engine cylinders is maintained.

[0011] Further, after controlling the retarder to operate based on the retarder torque, the control method further comprises: stopping the retarder from operating when the vehicle speed is not greater than a preset vehicle speed threshold or the engine speed is not greater than a preset engine speed threshold.

[0012] In a second aspect, the embodiments of the present application further provide a control device for auxiliary braking of a vehicle, the control device comprising: a switch determination module configured to determine whether a brake auxiliary switch signal of the vehicle is an open signal; a first operation module configured to, if the brake auxiliary switch signal is a closed signal, control a retarder of the vehicle to operate based on a retarder gear signal of the vehicle; a second operation module configured to, if the brake auxiliary switch signal is the open signal, determine whether to control an engine cylinder of the vehicle to operate based on a brake signal of the vehicle, and determine whether to control the retarder to operate based on a retarder handle signal of the vehicle.

[0013] In a third aspect, the embodiments of the present application further provide an electronic device, comprising a processor, a memory and a bus, the memory stores machine readable instructions executable by the processor, when the electronic device is running, the processor and the memory communicate through the bus, and the machine readable instructions are executed by the processor to perform the steps of the control method for auxiliary braking of a vehicle in the first aspect or any possible implementation manner of the first aspect.

[0014] In a fourth aspect, the embodiments of the present application further provide a computer readable storage medium, the computer readable storage medium stores a computer program, and the computer program is executed by the processor to perform the steps of the control method for auxiliary braking of a vehicle in the first aspect or any possible implementation manner of the first aspect.

[0015] The control method and device for auxiliary braking of a vehicle provided by the embodiments of the present application determine whether a brake auxiliary switch signal of the vehicle is an open signal, if the brake auxiliary switch signal is a closed signal, control a retarder of the vehicle to operate based on a retarder gear signal of the vehicle, and if the brake auxiliary switch signal is the open signal, determine whether to control an engine cylinder of the vehicle to operate based on a brake signal of the vehicle, and determine whether to control the retarder to operate based on a retarder handle signal of the vehicle.

[0016] In this way, the driving risk, the operation cost and the intervention frequency of the auxiliary braking system are reduced, and the driving comfort is improved.

[0017] In order to make the above objectives, features and advantages of the present application more apparent, the following will specifically describe preferred embodiments of the present application with reference to the accompanying drawings. BRIEF DESCRIPTION OF THE DRAWINGS

[0018] In order to more clearly illustrate the technical solutions of the embodiments of the present application, the following is a brief introduction to the drawings required for use in the embodiments. It should be understood that the following drawings only show certain embodiments of the present application and therefore should not be regarded as limiting the scope. For ordinary technicians in this field, other relevant drawings can be obtained based on these drawings without creative work.

[0019] Figure 1 One of the flow charts of a vehicle auxiliary braking control method provided by an embodiment of the present application is shown; Figure 2 A second flowchart of a vehicle auxiliary braking control method provided by an embodiment of the present application is shown; Figure 3 A third flowchart of a vehicle auxiliary braking control method provided by an embodiment of the present application is shown; Figure 4 A fourth flowchart of a vehicle auxiliary braking control method provided in an embodiment of the present application is shown; Figure 5 A fifth flowchart of a vehicle auxiliary braking control method provided in an embodiment of the present application is shown; Figure 6 One of the structural schematic diagrams of a vehicle auxiliary braking control device provided in an embodiment of the present application is shown; Figure 7 A second structural diagram of a vehicle auxiliary braking control device provided in an embodiment of the present application is shown; Figure 8 A schematic structural diagram of an electronic device provided in an embodiment of the present application is shown. DETAILED DESCRIPTION

[0020] In order to make the purpose, technical solutions and advantages of the embodiments of the present application clearer, the technical solutions in the embodiments of the present application will be clearly and completely described below in conjunction with the drawings in the embodiments of the present application. It should be understood that the drawings in the present application only serve the purpose of illustration and description and are not used to limit the scope of protection of the present application. In addition, it should be understood that the schematic drawings are not drawn to scale. The flowcharts used in this application illustrate the operations implemented according to some embodiments of the present application. It should be understood that the operations of the flowcharts can be implemented out of sequence, and steps without logical context can be reversed or implemented simultaneously. In addition, those skilled in the art, under the guidance of the contents of this application, can add one or more other operations to the flowchart, or remove one or more operations from the flowchart.

[0021] In addition, the described embodiments are only some embodiments of the present application, not all embodiments. The components of the embodiments of the present application described and shown in the drawings herein can be arranged and designed in various different configurations. Therefore, the following detailed description of the embodiments of the present application provided in the drawings is not intended to limit the scope of the claimed present application, but only represents selected embodiments of the present application. Based on the embodiments of the present application, all other embodiments obtained by those skilled in the art without creative labor are within the scope of protection of the present application.

[0022] The method, device, electronic equipment or computer readable storage medium provided in the embodiments of the present application can be applied to any scene requiring vehicle auxiliary braking, and the embodiments of the present application do not limit the specific application scene. Any solution using the control method and device for vehicle auxiliary braking provided in the embodiments of the present application is within the protection scope of the present application.

[0023] It is worth noting that in the mine operation condition, the wide-body mine dump truck is in a long-term heavy-load running state, and at the same time faces complex and harsh road conditions, including continuous long downhill, frequent following driving and other special working conditions requiring continuous braking. This high-load running mode causes the temperature of the hub brake system to rise sharply, which on the one hand causes the braking efficiency to decrease significantly, affecting the driving safety, and on the other hand causes abnormal wear of key components such as tires and brake pads, which not only greatly increases the maintenance cost and reduces the attendance rate. The currently used brake auxiliary system assists braking. However, during operation, the brake auxiliary system needs to be manually started by the driver, which has high requirements for the working condition judgment ability and operation proficiency of the operator, and the auxiliary braking system cannot intervene in time. In addition, the multiple brake devices in the brake auxiliary system cannot synchronously assist braking, and the braking efficiency is reduced.

[0024] To solve the above problems, the embodiments of the present application provide a control method and device for vehicle auxiliary braking, which reduces the driving risk, operation cost and intervention frequency of the auxiliary braking system, and improves the driving comfort.

[0025] In order to facilitate the understanding of the present application, the technical solutions provided by the present application will be described in detail below in combination with specific embodiments.

[0026] Please refer to Figure 1 , Figure 1 One of the flowcharts of the control method for vehicle auxiliary braking provided in the embodiments of the present application.

[0027] In the present application, the multiple brake devices in the brake auxiliary system include the retarder of the vehicle and the engine cylinder of the vehicle. The existing solution is to separately open the engine cylinder brake and the retarder brake.

[0028] As Figure 1As shown in the method for controlling vehicle auxiliary braking provided in the embodiments of the present application, the method comprises the following steps: Step S101, determining whether the brake auxiliary switch signal of the vehicle is an open signal.

[0029] Here, the brake auxiliary switch is provided on the vehicle, and the open / close state of the brake auxiliary switch is selected according to the road condition and the intention of the driver.

[0030] Step S102, if the brake auxiliary switch signal is a closed signal, controlling the operation of the retarder of the vehicle based on the retarder gear signal of the vehicle.

[0031] Here, when the brake auxiliary switch signal is a closed signal, the auxiliary braking is activated manually by the driver. The retarder gear signal of the vehicle is the gear selected manually by the driver, and each gear corresponds to a different torque of the retarder. According to the gear selected manually by the driver, the retarder of the vehicle is controlled to operate at the selected gear.

[0032] Step S103, if the brake auxiliary switch signal is an open signal, determining whether to control the operation of the engine cylinder of the vehicle based on the brake signal of the vehicle, and determining whether to control the operation of the retarder of the vehicle based on the retarder handle signal of the vehicle.

[0033] Here, the brake signal is generated by stepping on the brake pedal.

[0034] The following will be described in combination with Figure 2 to illustrate how to determine whether to control the operation of the engine cylinder of the vehicle based on the brake signal of the vehicle.

[0035] Please refer to Figure 2 , Figure 2 for the flowchart two of the method for controlling vehicle auxiliary braking provided in the embodiments of the present application.

[0036] As Figure 2 shown in the embodiments of the present application, as to the determination of whether to control the operation of the engine cylinder of the vehicle based on the brake signal of the vehicle in step S103, in the specific implementation, as an example, the following steps can be included: Step S10311, when receiving the brake signal of the vehicle, determining whether the vehicle speed is greater than a preset vehicle speed threshold and the engine speed of the vehicle is greater than a preset speed threshold.

[0037] Here, as an example, the preset vehicle speed threshold is 15km / h, and the preset engine speed threshold is 1000rpm. It should be noted that the preset vehicle speed threshold and the preset engine speed threshold are determined by the neural network collecting the driving habits of the driver. Specifically, by collecting multi-dimensional data such as engine speed and vehicle speed in real time, a driver behavior feature model is constructed. After obtaining the driver's commonly used vehicle speed of 15km / h and engine speed of 1000rpm through big data, the system automatically optimizes the control logic to dynamically adjust the preset vehicle speed threshold and the preset engine speed threshold, and realizes the intelligent intervention of auxiliary braking. Through the preset vehicle speed threshold and the preset engine speed threshold, unnecessary intervention of the vehicle retarder auxiliary braking and the engine cylinder auxiliary braking under the flat road driving condition can be avoided.

[0038] Step S10312, if the vehicle speed is greater than the preset vehicle speed threshold and the engine speed is greater than the preset engine speed threshold, the engine cylinder of the vehicle is controlled to operate.

[0039] Here, when the vehicle speed is not greater than the preset vehicle speed threshold or the engine speed is not greater than the preset engine speed threshold, the operation of the retarder is stopped.

[0040] Step S10313, if the vehicle speed is not greater than the preset vehicle speed threshold or the engine speed is not greater than the preset engine speed threshold, the closed state of the engine cylinder is maintained.

[0041] Next, how to determine whether to control the engine cylinder of the vehicle to operate based on the brake signal of the vehicle will be described in conjunction with Figure 3

[0042] Please refer to Figure 3 , Figure 3 for the third flowchart of the control method of the vehicle auxiliary braking provided by the embodiments of the present application.

[0043] As shown in the foregoing Figure 3 , regarding the determination of whether to control the retarder to operate based on the retarder handle signal of the vehicle in step S103, in specific implementation, as an example, the following steps can be included: Step S10321, when the retarder handle signal of the vehicle is a closed signal, the retarder of the vehicle is controlled to operate based on the retarder gear signal of the vehicle.

[0044] Here, when the brake auxiliary switch signal is an open signal and the retarder handle signal is a closed signal, the auxiliary braking is activated manually by the driver.

[0045] Step S10322, when the retarder handle signal of the vehicle is an open signal and the brake signal of the vehicle is received, it is determined whether the vehicle speed is greater than the preset vehicle speed threshold and the engine speed of the vehicle is greater than the preset engine speed threshold.

[0046] ​Step S10323, if the vehicle speed is greater than the preset vehicle speed threshold and the engine speed is greater than the preset engine speed threshold, determining whether to control the retarder to operate based on the coolant temperature in the retarder.

[0047] Step S10324, if the vehicle speed is greater than the preset vehicle speed threshold and the engine speed is greater than the preset engine speed threshold, keeping the retarder in the closed state.

[0048] The following Figure 4 will illustrate how to determine whether to control the engine cylinder of the vehicle to operate based on the brake signal of the vehicle.

[0049] Please refer to Figure 4 , Figure 4 for the fourth flowchart of the control method of the vehicle auxiliary braking provided by the embodiments of the present application.

[0050] As Figure 4 shown in the foregoing embodiments, regarding the determination whether to control the retarder to operate based on the coolant temperature in the retarder in step S10323, in specific implementation, as an example, the following steps can be included: Step S103231, determining whether the coolant temperature in the retarder is greater than a first preset temperature threshold.

[0051] Step S103232, if the coolant temperature is greater than the first preset temperature threshold, keeping the retarder in the closed state.

[0052] Here, as an example, the first preset temperature threshold is 100℃.

[0053] Step S103233, if the coolant temperature is not greater than the first preset temperature threshold, determining the retarder torque corresponding to the preset temperature interval to which the coolant temperature belongs.

[0054] Here, each preset temperature interval corresponds to a retarder torque. By monitoring the coolant temperature in real time, the retarder torque output is dynamically adjusted in different preset temperature intervals, so as to avoid that the coolant temperature is too high and the retarder is stepped limited torque, and the closed-loop control of the coolant temperature is realized. As an example, when the coolant temperature is in the interval of (-∞, 85℃], the corresponding retarder torque is the rated torque, when the coolant temperature is in the interval of (85℃, 90℃], the corresponding retarder torque is 80% of the rated torque, when the coolant temperature is in the interval of (90℃, 95℃], the corresponding retarder torque is 50% of the rated torque, and when the coolant temperature is in the interval of (95℃, 100℃], the corresponding retarder torque is 20% of the rated torque.

[0055] Step S10324, controlling the retarder to operate based on the retarder torque.

[0056] Here, when the vehicle speed is not greater than a preset vehicle speed threshold or the engine speed is not greater than a preset engine speed threshold, the retarder operation is stopped.

[0057] Please refer to Figure 5 , Figure 5 The fifth flowchart of the control method of the vehicle auxiliary braking provided by the embodiment of the application.

[0058] As Figure 5 indicated in the foregoing embodiment, after step S101, the control method further comprises: Step S201, if the brake auxiliary switch signal is an opening signal, determining whether the coolant temperature is greater than a second preset temperature threshold.

[0059] Here, as an example, the second preset temperature threshold is 85℃.

[0060] Step S202, if the coolant temperature is greater than the first preset temperature threshold, keeping the fan of the vehicle in a closed state.

[0061] Step S203, if the coolant temperature is not greater than the second preset temperature threshold, determining the fan speed corresponding to the preset temperature interval to which the coolant temperature belongs.

[0062] Here, each preset temperature interval corresponds to a fan speed. By monitoring the coolant temperature in real time, the fan speed output is dynamically adjusted in different preset temperature intervals, realizing the step control of the electronic fan, saving energy consumption, and avoiding damage caused by frequent opening of the fan. As an example, when the coolant temperature is in the interval (85℃, 90℃], the corresponding fan speed is 20% of the rated speed, when the coolant temperature is in the interval (90℃, 95℃], the corresponding fan speed is 50% of the rated speed, when the coolant temperature is in the interval (95℃, 100℃], the corresponding fan speed is 80% of the rated speed, and when the coolant temperature is in the interval (100℃, +∞), the corresponding fan speed is the rated speed.

[0063] Step S204, based on the fan speed, controlling the fan to operate to cool the retarder.

[0064] Here, to prevent the risk of auxiliary braking failure caused by the water temperature being too high due to the retarder being opened for a long time, the fan is controlled to cool the retarder.

[0065] In the embodiment of the present application, the accurate intervention of the auxiliary braking system is realized by analyzing the driver's braking intention in real time and comprehensively considering the vehicle operating state parameters. At the same time, the fan operating state is dynamically adjusted through the closed-loop control mechanism of the coolant temperature to ensure the balance between the heat dissipation efficiency and the energy consumption, so as to reduce the driving risk and save the operating cost. Meanwhile, the vehicle speed and engine speed conditions for setting the intervention and exit of the transmission cylinder braking and the retarder braking are set to reduce the intervention frequency of the auxiliary braking and improve the driving comfort.

[0066] The control method for vehicle auxiliary braking provided in the embodiment of the present application reduces the driving risk, the operating cost and the intervention frequency of the auxiliary braking system, and improves the driving comfort.

[0067] Based on the same application concept, the control device for vehicle auxiliary braking corresponding to the control method for vehicle auxiliary braking provided in the above-mentioned embodiments is also provided in the embodiment of the present application. Since the principle of solving problems in the device in the embodiment of the present application is similar to the control method for vehicle auxiliary braking in the above-mentioned embodiments of the present application, the implementation of the device can be referred to the implementation of the method, and the repeated parts will not be described herein.

[0068] Please refer to Figures 6 to 7 , Figure 6 Figure 1 is a structural schematic diagram of a control device for vehicle auxiliary braking provided in the embodiment of the present application, Figure 7 Figure 2 is another structural schematic diagram of a control device for vehicle auxiliary braking provided in the embodiment of the present application.

[0069] As shown in Figure 6 , the control device for vehicle auxiliary braking 610 provided in the embodiment of the present application comprises: A switch determination module 611 is configured to determine whether the brake auxiliary switch signal of the vehicle is an open signal. A first operating module 612 is configured to, if the brake auxiliary switch signal is a closed signal, control the retarder of the vehicle to operate based on the retarder gear signal of the vehicle. A second operating module 613 is configured to, if the brake auxiliary switch signal is an open signal, determine whether to control the engine cylinder of the vehicle to operate based on the brake signal of the vehicle, and determine whether to control the retarder to operate based on the retarder handle signal of the vehicle.

[0070] Further, the second operating module 613, when used for determining whether to control the engine cylinder of the vehicle to operate based on the brake signal of the vehicle, is further configured to: determine whether the vehicle speed is greater than a preset vehicle speed threshold and whether the engine speed of the vehicle is greater than a preset speed threshold when receiving the brake signal of the vehicle. If the vehicle speed is greater than a preset vehicle speed threshold and the engine speed is greater than a preset engine speed threshold, the engine cylinders of the vehicle are controlled to operate; if the vehicle speed is not greater than the preset vehicle speed threshold or the engine speed is not greater than the preset engine speed threshold, the off state of the engine cylinders is maintained.

[0071] Further, the second operation module 613, when used for determining whether to control the retarder to operate based on the retarder handle signal of the vehicle, is further used for: controlling the retarder of the vehicle to operate based on the retarder gear signal of the vehicle when the retarder handle signal of the vehicle is an off signal; determining whether the vehicle speed is greater than a preset vehicle speed threshold and the engine speed of the vehicle is greater than a preset engine speed threshold when the retarder handle signal of the vehicle is an on signal and the brake signal of the vehicle is received; if the vehicle speed is greater than the preset vehicle speed threshold and the engine speed is greater than the preset engine speed threshold, determining whether to control the retarder to operate based on the coolant temperature in the retarder.

[0072] Further, the second operation module 613, when used for determining whether to control the retarder to operate based on the coolant temperature in the retarder, is further used for: determining whether the coolant temperature in the retarder is greater than a first preset temperature threshold; if the coolant temperature is greater than the first preset temperature threshold, maintaining the off state of the retarder; if the coolant temperature is not greater than the first preset temperature threshold, determining the retarder torque corresponding to the preset temperature interval to which the coolant temperature belongs; controlling the retarder to operate based on the retarder torque.

[0073] Further, as shown in Figure 7 the control device further comprises: a comparison module 614, if the brake assist switch signal is an on signal, determining whether the coolant temperature is greater than a second preset temperature threshold; if the coolant temperature is greater than the first preset temperature threshold, maintaining the off state of the fan of the vehicle; a fan operation module 615, if the coolant temperature is not greater than the second preset temperature threshold, determining the fan speed corresponding to the preset temperature interval to which the coolant temperature belongs; controlling the fan to operate based on the fan speed, so as to cool the retarder.

[0074] Further, the control device further comprises: a cylinder stop module 616, when the vehicle speed is not greater than the preset vehicle speed threshold or the engine speed is not greater than the preset engine speed threshold, stopping the engine cylinders from operating.

[0075] Further, the control device further comprises: The retarder stopping module 617 stops the retarder from running when the vehicle speed is not greater than a preset vehicle speed threshold or the engine speed is not greater than a preset speed threshold.

[0076] The control device for vehicle auxiliary braking provided in the embodiments of the present application reduces the driving risk, the operation cost and the intervention frequency of the auxiliary braking system, and improves the driving comfort.

[0077] Please refer to Figure 8 , Figure 8 for a structural schematic diagram of an electronic device provided in the embodiments of the present application.

[0078] As shown in Figure 8 , the electronic device 800 comprises a processor 810, a memory 820 and a bus 830.

[0079] The memory 820 stores machine readable instructions executable by the processor 810, when the electronic device 800 is running, the processor 810 and the memory 820 communicate through the bus 830, and the machine readable instructions are executed by the processor 810, which can execute the steps of the control method for vehicle auxiliary braking in the method embodiments as shown in the above Figure 1 、 Figure 2 Figure 3 、 Figure 4 and Figure 5 , and the specific implementation manner can be referred to the method embodiments, which will not be described here.

[0080] The embodiments of the present application further provide a computer readable storage medium, the computer readable storage medium stores a computer program, and the computer program can execute the steps of the control method for vehicle auxiliary braking in the method embodiments as shown in the above Figure 1 、 Figure 2 Figure 3 、 Figure 4 and Figure 5 when the processor runs, and the specific implementation manner can be referred to the method embodiments, which will not be described here.

[0081] Those skilled in the art can clearly understand that, for the convenience and brevity of description, the specific working process of the system and device described above can refer to the corresponding process in the foregoing method embodiment, and will not be repeated here. In several embodiments provided in the present application, it should be understood that the disclosed system, device and method can be implemented in other ways. The device embodiments described above are only schematic, for example, the division of the units is only a logical function division, and there can be another division manner in actual implementation, for example, a plurality of units or components can be combined or integrated into another system, or some features can be ignored or not executed. In addition, the coupling or direct coupling or communication connection between the units shown or discussed can be indirect coupling or communication connection through some communication interfaces, devices or units, and can be electrical, mechanical or other forms.

[0082] The units described as separate components can or can not be physically separate, and the components shown as units can or can not be physical units, i.e., can be located in one place or distributed on a plurality of network units. Some or all of the units can be selected according to actual needs to achieve the purpose of the embodiment.

[0083] In addition, the functional units in each embodiment of the present application can be integrated in one processing unit, or each unit can be physically present separately, or two or more units can be integrated in one unit.

[0084] If the functions are realized in the form of software function units and sold or used as independent products, they can be stored in a non-volatile computer readable storage medium executable by a processor. Based on this understanding, the technical solutions of the present application essentially or the parts that contribute to the prior art or the parts of the technical solutions can be embodied in the form of software products, and the computer software products are stored in a storage medium, including a plurality of instructions for causing a computer device (which can be a personal computer, a server, or a network device, etc.) to execute all or part of the steps of the methods described in the embodiments of the present application. The foregoing storage medium includes: U disk, mobile hard disk, read-only memory (Read-Only Memory, ROM), random access memory (Random Access Memory, RAM), magnetic disk or optical disk, and various program code storage media.

[0085] The above is only a specific implementation of the present application, but the protection scope of the present application is not limited thereto, and any person skilled in the art can easily think of changes or replacements within the technical scope disclosed in the present application, which should be covered within the protection scope of the present application. Therefore, the protection scope of the present application should be subject to the protection scope of the claims.

Claims

1. A control method of vehicle auxiliary braking, characterized by, The control method comprises: determining whether a brake assist switch signal of the vehicle is an open signal; if the brake assist switch signal is a closed signal, controlling a retarder of the vehicle to operate based on a retarder gear signal of the vehicle; if the brake assist switch signal is an open signal, determining whether to control an engine cylinder of the vehicle to operate based on a brake signal of the vehicle, and determining whether to control the retarder to operate based on a retarder handle signal of the vehicle.

2. The control method of vehicle auxiliary braking according to claim 1, characterized by, The determination whether to control the engine cylinder of the vehicle to operate based on the brake signal of the vehicle comprises: when receiving the brake signal of the vehicle, determining whether a vehicle speed of the vehicle is greater than a preset vehicle speed threshold and whether an engine speed of the vehicle is greater than a preset engine speed threshold; if the vehicle speed is greater than the preset vehicle speed threshold and the engine speed is greater than the preset engine speed threshold, controlling the engine cylinder of the vehicle to operate; if the vehicle speed is not greater than the preset vehicle speed threshold or the engine speed is not greater than the preset engine speed threshold, keeping a closed state of the engine cylinder.

3. The control method of vehicle auxiliary braking according to claim 1, characterized by, The determination whether to control the retarder to operate based on the retarder handle signal of the vehicle comprises: when the retarder handle signal of the vehicle is a closed signal, controlling the retarder of the vehicle to operate based on the retarder gear signal of the vehicle; when the retarder handle signal of the vehicle is an open signal and receiving the brake signal of the vehicle, determining whether the vehicle speed of the vehicle is greater than the preset vehicle speed threshold and whether the engine speed of the vehicle is greater than the preset engine speed threshold; if the vehicle speed is greater than the preset vehicle speed threshold and the engine speed is greater than the preset engine speed threshold, determining whether to control the retarder to operate based on a coolant temperature in the retarder; if the vehicle speed is greater than the preset vehicle speed threshold and the engine speed is greater than the preset engine speed threshold, keeping a closed state of the retarder.

4. The control method of vehicle auxiliary braking according to claim 3, characterized by, The determination whether to control the retarder to operate based on the coolant temperature in the retarder comprises: determining whether the coolant temperature in the retarder is greater than a first preset temperature threshold; if the coolant temperature is greater than the first preset temperature threshold, keeping the closed state of the retarder; if the coolant temperature is not greater than the first preset temperature threshold, determining a retarder torque corresponding to a preset temperature interval to which the coolant temperature belongs; controlling the retarder to operate based on the retarder torque.

5. The control method of vehicle auxiliary braking according to claim 3, characterized by, The control method further comprises: if the brake assist switch signal is an open signal, determining whether the coolant temperature is greater than a second preset temperature threshold; if the coolant temperature is greater than the first preset temperature threshold, keeping a closed state of a fan of the vehicle; if the coolant temperature is not greater than the second preset temperature threshold, determining a fan speed corresponding to a preset temperature interval to which the coolant temperature belongs; controlling the fan to operate based on the fan speed, so as to cool the retarder.

6. The control method of vehicle auxiliary braking according to claim 2, characterized by, After controlling the engine cylinder of the vehicle to operate if the vehicle speed is greater than the preset vehicle speed threshold and the engine speed is greater than the preset engine speed threshold, the control method further comprises: when the vehicle speed is not greater than the preset vehicle speed threshold or the engine speed is not greater than the preset engine speed threshold, stopping the engine cylinder from operating.

7. The control method of vehicle auxiliary braking according to claim 4, characterized by, After controlling the operation of the retarder based on the retarder torque, the control method further comprises: stopping the operation of the retarder when the vehicle speed is not greater than a preset vehicle speed threshold or the engine speed is not greater than a preset engine speed threshold.

8. A control device of a vehicle auxiliary brake, characterized by, The control device comprises: a switch determination module configured to determine whether a brake assist switch signal of the vehicle is an open signal; a first operation module configured to, if the brake assist switch signal is a closed signal, control an operation of a retarder of the vehicle based on a retarder gear signal of the vehicle; a second operation module configured to, if the brake assist switch signal is the open signal, determine whether to control an operation of a cylinder of an engine of the vehicle based on a brake signal of the vehicle, and determine whether to control the operation of the retarder based on a retarder handle signal of the vehicle.

9. An electronic device, comprising: comprise: a processor, a memory and a bus, the memory storing machine readable instructions executable by the processor, when the electronic device is running, the processor and the memory communicate through the bus, the machine readable instructions are executed by the processor to perform the steps of the control method of the auxiliary brake of the vehicle according to any one of claims 1 to 7.

10. A computer-readable storage medium, characterized in that, The computer readable storage medium stores a computer program, and the computer program is executed by the processor to perform the steps of the control method of the auxiliary brake of the vehicle according to any one of claims 1 to 7.

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