Hybrid CAN network topology structure based on mining dump truck

Abstract

The utility model discloses a hybrid CAN network topological structure based on a mining dump truck, which belongs to the technical field of extended-range hybrid dump trucks, and comprises a first CAN network, a second CAN network, a third CAN network, a fourth CAN network, a fifth CAN network and a sixth CAN network, the second CAN network comprises a second CAN bus and at least two driving motor controllers which are connected to the second CAN bus; the vehicle control unit VCU is respectively connected to the first CAN bus and the second CAN bus and is used for realizing data interaction; according to the utility model, the range extender controller and the driving motor controller are separately connected to two different CAN networks, so that the power generation and power control of the whole vehicle are separately controlled, the load rate of the CAN bus is reduced, the stability of the vehicle system is improved, and the stability of data interaction is guaranteed by using the central communication of the VCU vehicle control unit.

Description

Technical Field

[0001] The utility model relates to the technical field of extended-range hybrid dump truck networks, and in particular to a hybrid CAN network topology structure based on a mining dump truck. Background Art

[0002] The current extended-range hybrid mining dump trucks are equipped with multiple drive motors and their drive motor controllers due to the large torque requirements; at the same time, in order to extend the range of the electric drive system, multiple range extenders and their range extender controllers are also set up. In order to increase the data transmission rate, the drive motor controller (MCU-TM) and the range extender controller (MCU-MT) are usually integrated on the same CAN bus for communication, so that the drive power and power generation are controlled in an integrated manner.

[0003] However, the above setting method will cause the CAN bus load rate to be too high, which is prone to generate error frames, affecting the operation of the entire vehicle and even posing a safety hazard to the driving of the entire vehicle. Utility Model Content

[0004] The utility model aims to provide a hybrid CAN network topology structure based on a mining dump truck, which solves the technical problem of excessively high bus load rate in the prior art.

[0005] The utility model discloses a hybrid CAN network topology structure based on a mining dump truck, comprising:

[0006] The first CAN network includes:

[0007] First CAN bus,

[0008] at least two range extender controllers connected to the first CAN bus;

[0009] The second CAN network includes:

[0010] Second CAN bus,

[0011] At least two drive motor controllers, connected to the second CAN bus;

[0012] The vehicle control unit VCU is connected to the first CAN bus and the second CAN bus respectively to realize data exchange.

[0013] The present application separately connects the range extender controller and the drive motor controller to two different CAN networks, so that the power generation and power control of the whole vehicle can be controlled separately, thereby reducing the CAN bus load rate and improving the stability of the vehicle system. The VCU vehicle control unit is used for centralized communication to ensure the stability of data interaction.

[0014] On the basis of the above technical solution, the solution of this application can also be improved as follows:

[0015] Preferably, the first CAN network is a vehicle communication area network VCAN, and the second CAN network is a powertrain control area network PCAN; by adopting this solution, the operation control logic of the whole vehicle is optimized and the safety is improved.

[0016] Preferably, the first CAN network also includes: an instrument, a thermal management system TMS, a battery management system BMS, an engine control unit ECU and a DC-DC converter DCDC;

[0017] The instrument, the thermal management system TMS, the battery management system BMS, the engine control unit ECU and the DC-DC converter DCDC are respectively connected to the first CAN bus; by adopting this solution, the power generation and power consumption related nodes are integrated on the same CAN bus, thereby improving the reliability of related data transmission.

[0018] Preferably, the second CAN network further includes: a transmission control unit TCU and a transmission oil pump;

[0019] The transmission control unit TCU and the transmission oil pump are respectively connected to the second CAN bus; by adopting this solution, the nodes related to power control are integrated on the same CAN bus, thereby improving the reliability of related data transmission.

[0020] Preferably, the second CAN network also includes: a shift handle; the shift handle is connected to the second CAN bus; the adoption of this solution further optimizes the operation control logic of the entire vehicle, ensures the accuracy of data transmission of power control related nodes, and improves the reliability of the driving process.

[0021] Preferably, it also includes:

[0022] The diagnostic interface OBD is connected to the first CAN bus and the second CAN bus respectively; adopting this solution makes vehicle fault diagnosis faster and more accurate, and also provides convenience for vehicle monitoring and performance optimization.

[0023] Preferably, the baud rates of the first CAN network and the second CAN network are both set to 500 kbps; adopting this solution significantly alleviates the problem of excessive CAN bus load rate.

[0024] Preferably, the number of the drive motor controllers is three, and the number of the range extenders is two; by adopting this solution, the production cost is reduced while meeting the actual working conditions.

[0025] Through the above technical solution, the utility model achieves the following beneficial effects:

[0026] 1. This application separates the range extender controller and the drive motor controller into two different CAN networks, so that the power generation and power control of the whole vehicle are controlled separately, thereby reducing the CAN bus load rate and improving the stability of the vehicle system. The VCU vehicle control unit is used for central communication to ensure the stability of data interaction;

[0027] 2. This application sets the first CAN network 1 as the vehicle communication area network VCAN and the second CAN network 2 as the powertrain control area network PCAN, so that the transmission control unit TCU on the powertrain control area network PCAN only controls the drive output, while the power generation of the whole vehicle is integrated and controlled by the vehicle control unit VCU, thereby reducing the load rate on the powertrain control area network PCAN, optimizing the operation control logic of the whole vehicle, and improving safety. BRIEF DESCRIPTION OF THE DRAWINGS

[0028] In order to more clearly illustrate the specific implementation methods of the utility model or the technical solutions in the prior art, the drawings required for use in the specific implementation methods or the description of the prior art will be briefly introduced below. Obviously, the drawings described below are some implementation methods of the utility model. For ordinary technicians in this field, other drawings can be obtained based on these drawings without paying creative work.

[0029] Figure 1 It is a structural schematic diagram of a hybrid CAN network topology structure based on a mining dump truck according to a specific embodiment of the utility model;

[0030] Description of reference numerals:

[0031] 1. The first CAN network; 2. The second CAN network. DETAILED DESCRIPTION

[0032] The following embodiments of the technical solution of the utility model are described in detail in conjunction with the accompanying drawings. The following embodiments are only used to more clearly illustrate the technical solution of the utility model, and are therefore only used as examples, and cannot be used to limit the protection scope of the utility model.

[0033] It should be noted that, unless otherwise specified, the technical terms or scientific terms used in this application should have the common meanings understood by technicians in the field to which the utility model belongs.

[0034] In order to better understand the above technical solution, the above technical solution will be described in detail below in conjunction with the accompanying drawings and specific implementation methods.

[0035] Example:

[0036] like Figure 1 As shown, an embodiment of the present application discloses a hybrid CAN network topology structure based on a mining dump truck, and its specific structure includes: a first CAN network 1, a second CAN network 2 and a vehicle control unit VCU3.

[0037] The first CAN network 1 is used for whole vehicle power generation, and includes a first CAN bus and at least two range extender controllers (MCU-MT), and the range extender controllers (MCU-MT) are connected to the first CAN bus.

[0038] It should be noted that the range extender controller (MCU-MT) is a key component used to manage and control the range extender in hybrid vehicles. It communicates and coordinates with the range extender and other systems of the vehicle through sensors and actuators. Through intelligent control and management, it coordinates the collaboration between the range extender and the electric drive system to achieve efficient use of energy and optimization of vehicle performance. The range extender is a device used to increase the range of hybrid vehicles. It is usually an internal combustion engine, which may be a gasoline or diesel engine, but it may also be other types of engines, such as a turbine engine or a fuel cell.

[0039] The second CAN network 2 is used for power control, and includes a second CAN bus and at least two drive motor controllers (MCU-TM), and the drive motor controllers (MCU-TM) are connected to the second CAN bus.

[0040] It should be noted that the drive motor controller (MCU-TM) is one of the key components used to control the electric drive system in electric vehicles or hybrid vehicles. It is responsible for managing and controlling the operation of the drive motor to achieve power transmission and drive control of the vehicle.

[0041] The vehicle control unit VCU (Vehicle Control Unit) is responsible for managing and coordinating various components in the hybrid power system to achieve control and regulation of the entire vehicle. It is respectively connected to the first CAN bus and the second CAN bus to achieve data interaction.

[0042] The utility model connects the range extender controller and the drive motor controller separately to two different CAN networks, so that the power generation and power control of the whole vehicle are controlled separately, thereby reducing the CAN bus load rate and improving the stability of the vehicle system. The vehicle control unit VCU is used for central communication to ensure the stability of data interaction.

[0043] In some embodiments, the first CAN network 1 is a vehicle communication area network VCAN (Vehicle Communication Area Network), which is a network system used for communication between various electronic modules; the second CAN network 2 is a powertrain control area network PCAN (Powertrain Control Area Network), which is a communication network used to manage and control the powertrain system.

[0044] like Figure 1 As shown, in this embodiment, the first CAN network also includes: an instrument, a thermal management system TMS, a battery management system BMS, an engine control unit ECU and a DC-DC converter DCDC; and the instrument, the thermal management system TMS, the battery management system BMS, the engine control unit ECU and the DC-DC converter DCDC are respectively connected to the first CAN bus.

[0045] like Figure 1 As shown, in this embodiment, the second CAN network also includes: a transmission control unit TCU and a transmission oil pump; the transmission control unit TCU and the transmission oil pump are respectively connected to the second CAN bus.

[0046] Through the above settings, the transmission control unit TCU on the powertrain control area network PCAN only controls the drive output, while the vehicle power generation is integrated and controlled by the vehicle control unit VCU, thereby reducing the load rate on the powertrain control area network PCAN, optimizing the operation control logic of the vehicle, and improving safety.

[0047] In some embodiments, the second CAN network further includes: a shift handle; the shift handle is connected to the second CAN bus.

[0048] The traditional shift handle is connected to the vehicle communication area network VCAN. This application changes it to be connected to the powertrain control area network PCAN, further optimizing the operation control logic of the entire vehicle, ensuring the accuracy of data transmission of power control related nodes, and improving the reliability of the driving process.

[0049] In some embodiments, Figure 1 As shown, it also includes: a diagnostic interface OBD, which is connected to the first CAN bus and the second CAN bus respectively.

[0050] It should be noted that the diagnostic interface OBD (On-Board Diagnostics) is a standardized interface used in modern cars to diagnose and monitor vehicle systems; it allows dedicated diagnostic tools to communicate with the vehicle's electronic control unit to perform operations such as detecting faults, reading vehicle parameters and clearing fault codes.

[0051] By setting up the diagnostic interface OBD, vehicle fault diagnosis becomes faster and more accurate, and it also provides convenience for vehicle monitoring and performance optimization.

[0052] In some embodiments, Figure 1 As shown, the baud rates of the first CAN network and the second CAN network are both set to 500 kbps

[0053] Baud rate is a unit of measurement for data transmission speed, usually represented by the symbol bps (bits per second). It refers to the number of bits transmitted per second or the bit rate in digital communication. A higher baud rate means a larger amount of data transmitted per unit time and a faster transmission rate.

[0054] The baud rate of a traditional powertrain control area network PCAN is usually set at 250 kbps. This application significantly alleviates the problem of excessive CAN bus load rate by increasing it to 500 kbps.

[0055] In some embodiments, Figure 1 As shown, the number of the drive motor controllers is three, specifically represented by MCU1-TM, MCU2-TM and MCU3-TM; the number of the range extender controllers is two, specifically represented by MCU1-MT and MCU2-MT.

[0056] By providing three drive motors and their controllers and two range extenders and their controllers, the production cost can be reduced while meeting the actual operating requirements of the extended-range hybrid mining dump truck, and the actual application effect is good. However, it is not limited to this, and other quantities can also be used, and there is no specific limitation.

[0057] In the specification of the present utility model, a lot of specific details are described. However, it is understood that the embodiments of the present utility model can be practiced without these specific details. In some examples, well-known methods, structures and techniques are not shown in detail so as not to obscure the understanding of this specification.

[0058] In the description of this specification, the description with reference to the terms "one embodiment", "some embodiments", "example", "specific example" or "some examples" etc. means that the specific features, structures, materials or characteristics described in conjunction with the embodiment or example are included in at least one embodiment or example of the utility model. In this specification, the schematic representations of the above terms do not necessarily refer to the same embodiment or example. Moreover, the specific features, structures, materials or characteristics described may be combined in any one or more embodiments or examples in a suitable manner. In addition, those skilled in the art may combine and combine the different embodiments or examples described in this specification and the features of the different embodiments or examples, unless they are contradictory.

[0059] Finally, it should be noted that the above embodiments are only used to illustrate the technical solution of the utility model, rather than to limit it. Although the utility model has been described in detail with reference to the aforementioned embodiments, those skilled in the art should understand that they can still modify the technical solutions described in the aforementioned embodiments, or replace some or all of the technical features therein by equivalents. These modifications or replacements do not make the essence of the corresponding technical solutions deviate from the scope of the technical solutions of the embodiments of the utility model, and they should all be included in the scope of the claims and specification of the utility model.

Claims

1. A hybrid CAN network topology based on a mining dump truck, characterized in that: include: The first CAN network includes: First CAN bus, at least two range extender controllers connected to the first CAN bus; The second CAN network includes: Second CAN bus, At least two drive motor controllers, connected to the second CAN bus; The vehicle control unit VCU is connected to the first CAN bus and the second CAN bus respectively to realize data exchange.

2. The hybrid CAN network topology structure based on a mining dump truck according to claim 1 is characterized in that: The first CAN network is a vehicle communication area network VCAN, and the second CAN network is a powertrain control area network PCAN.

3. The hybrid CAN network topology structure based on a mining dump truck according to claim 2 is characterized in that: The first CAN network also includes: an instrument, a thermal management system TMS, a battery management system BMS, an engine control unit ECU and a DC-DC converter DCDC; The instrument, the thermal management system TMS, the battery management system BMS, the engine control unit ECU and the DC-DC converter DCDC are respectively connected to the first CAN bus.

4. The hybrid CAN network topology structure based on a mining dump truck according to claim 2 is characterized in that: The second CAN network also includes: a transmission control unit TCU and a transmission oil pump; The transmission control unit TCU and the transmission oil pump are respectively connected to the second CAN bus.

5. The hybrid CAN network topology structure based on a mining dump truck according to claim 4 is characterized in that: The second CAN network also includes: a shift handle; the shift handle is connected to the second CAN bus.

6. The hybrid CAN network topology structure based on a mining dump truck according to claim 1 is characterized in that: Also includes: The diagnostic interface OBD is connected to the first CAN bus and the second CAN bus respectively.

7. The hybrid CAN network topology structure based on a mining dump truck according to claim 1 is characterized in that: The baud rates of the first CAN network and the second CAN network are both set to 500 kbps.

8. The hybrid CAN network topology structure based on a mining dump truck according to claim 1 is characterized in that: The number of the drive motor controllers is three, and the number of the range extenders is two.

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