Power system and method of engineering machinery and engineering machinery

Abstract

The embodiment of the invention provides a power system and method of an engineering machine and the engineering machine. The power system comprises a first electric drive axle, a loading system and a driving system. Wherein the loading system comprises a first system, a second system and a third system; the first electric drive axle is connected with the driving system in a direct drive mode. The first electric drive axle at least comprises a first power output port and a second power output port; the first power output port is connected with at least one of a first system, a second system and a third system in the loading system so as to output power; and the second power output port is connected with at least one of the rest of the first system, the second system and the third system in the loading system so as to output power. The system achieves the purposes of simplifying the system structure of the engineering machinery and saving the cost.

Description

Technical Field

[0001] This application relates to the field of vehicle technologies, and in particular, to a power system, a method, and a construction machinery of a construction machinery. Background Art

[0002] In the field of current engineering machinery equipment, construction machinery is extremely widely used. In order to effectively reduce production costs and significantly improve its cost performance, the adoption of electrification technology has become the best way to achieve energy-saving economy.

[0003] In the specific application of electrification technology, the fuel efficiency of the engine can be significantly improved through range-extended power generation. However, there is currently a problem that both the driving and pumping operations require the intervention of a motor for driving, and each component adopts a separate motor driving method.

[0004] However, this method will lead to complex structural layout and high cost of construction machinery. Summary of the Invention

[0005] The embodiments of this application provide a power system, a method, and a construction machinery of a construction machinery, so as to achieve the purpose of reducing the complexity of the structural layout and the cost of the construction machinery.

[0006] In a first aspect, the embodiments of this application provide a power system of a construction machinery, including:

[0007] A first electric drive axle, an upper structure system, and a driving system; wherein, the upper structure system includes a first system, a second system, and a third system; the first electric drive axle is connected to the driving system in a direct drive manner; the first electric drive axle includes at least a first power output port and a second power output port;

[0008] The first power output port is connected to at least one of the first system, the second system, and the third system in the upper structure system to output power; the second power output port is connected to at least one of the remaining systems in the first system, the second system, and the third system in the upper structure system to output power.

[0009] In a possible implementation manner, the first power output port is connected to the first system and the second system, and the first power output port outputs the power output by the first electric drive axle to the first system and / or the second system;

[0010] The second power output port is connected to the third system, and the second power output port outputs the power output by the first electric drive axle to the third system.

[0011] In a possible implementation, the first power output port is connected to the first system to deliver the power output by the first electric drive axle to the first system; the first system is connected to the second system, and the first system delivers the power output by the first electric drive axle to the second system.

[0012] In a possible implementation, the first electric drive axle is further provided with a third power output port;

[0013] The first power output port is connected to the first system, and the first power output port delivers the power of the first electric drive axle to the first system; the second power output port is connected to the second system, and the second power output port delivers the power of the first electric drive axle to the second system; the third power output port is connected to the third system, and the third power output port delivers the power of the first electric drive axle to the third system.

[0014] In a possible implementation, the first system is a pumping system, the second system is an auxiliary drive system, and the third system is a boom system;

[0015] Or, the first system is an auxiliary drive system, the second system is a pumping system, and the third system is a boom system;

[0016] Or, the first system is a pumping system, the second system is a boom system, and the third system is an auxiliary drive system;

[0017] Or, the first system is a boom system, the second system is a pumping system, and the third system is an auxiliary drive system;

[0018] Or, the first system is a boom system, the second system is an auxiliary drive system, and the third system is a pumping system;

[0019] Or, the first system is an auxiliary drive system, the second system is a boom system, and the third system is a pumping system.

[0020] In a possible implementation, the power system further includes an electronic control unit; the electronic control unit is connected to the first electric drive axle, and the electronic control unit distributes electric energy to the first electric drive axle.

[0021] In a possible implementation, the power system further includes a second electric drive axle, the second electric drive axle is connected to the electronic control unit, the second electric drive axle is connected to the driving system in a direct drive manner, and the first electric drive axle and the second electric drive axle output power to the driving system.

[0022] In a possible implementation, the power system further includes one or more of a battery system, a power generation system assembly, and an external power supply interface;

[0023] Among them, the battery system, the power generation system assembly, and the external power supply interface are respectively connected to the electronic control unit to supply electric energy to the electronic control unit.

[0024] In a second aspect, an embodiment of the present application provides a construction machinery, in which a power system of the construction machinery as described in the first aspect and / or various possible implementations of the first aspect is provided.

[0025] In a third aspect, an embodiment of the present application provides a control method for a power system of a construction machinery, which is applied to an electronic control unit in the construction machinery. The method includes:

[0026] Sending an electric drive command to a first electric drive axle in the construction machinery to enable the first electric drive axle to drive the operation of the upper mounting system or the traveling system in the construction machinery;

[0027] Among them, the first electric drive axle is the first electric drive axle as described in the first aspect and / or various possible implementations of the first aspect.

[0028] The power system, method, and construction machinery provided by the embodiments of the present application. The power system includes a first electric drive axle, an upper mounting system, and a traveling system; among them, the upper mounting system includes a first system, a second system, and a third system; the first electric drive axle is connected to the traveling system in a direct drive manner; the first electric drive axle includes at least a first power output port and a second power output port; the first power output port is connected to at least one of the first system, the second system, and the third system in the upper mounting system to output power; the second power output port is connected to at least one of the remaining ones of the first system, the second system, and the third system in the upper mounting system to output power. In this system, the electric drive axle is connected to both the upper mounting system and the traveling system at the same time, so that the construction machinery can be controlled to travel or pump by one motor (the motor inside the first electric drive axle), achieving the purpose of streamlining the system structure of the construction machinery and saving costs. BRIEF DESCRIPTION OF THE DRAWINGS

[0029] The drawings here are incorporated into the specification and constitute a part of this specification, showing embodiments that conform to the present application, and are used together with the specification to explain the principles of the present application.

[0030] Figure 1 Structural schematic of the power system of the construction machinery provided by the present application Figure 1 ;

[0031] Figure 2 Structural schematic of the power system of the construction machinery provided by the present applicationFigure 2 ;

[0032] Figure 3 Structural schematic of the power system of the construction machinery provided by this application Figure 3 ;

[0033] Figure 4 Structural schematic of the power system of the construction machinery provided by this application Figure 4 ;

[0034] Figure 5 Structural schematic of the power system of the construction machinery provided by this application Figure 5 ;

[0035] Figure 6 Structural schematic of the power system of the construction machinery provided by this application Figure 6 ;

[0036] Figure 7 Structural schematic of the power system of the construction machinery provided by this application Figure 7 ;

[0037] Figure 8 Structural schematic of the power system of the construction machinery provided by this application Figure 8 ;

[0038] Figure 9 Structural schematic of the power system of the construction machinery provided by this application Figure 9 ;

[0039] Figure 10 Structural schematic of the power system of the construction machinery provided by this application Figure 10 ;

[0040] Figure 11 Structural schematic of the power system of the construction machinery provided by this application Figure 10 One;

[0041] Figure 12 Structural schematic of the power system of the construction machinery provided by this application Figure 10 Two;

[0042] Figure 13 Structural schematic of the power system of the construction machinery provided by this application Figure 10 Three;

[0043] Figure 14 Structural schematic of the power system of the construction machinery provided by this application Figure 10 Four;

[0044] Figure 15 Structural schematic of the power system of the construction machinery provided by this application Figure 10 Five;

[0045] Figure 16 Structural schematic of the power system of the construction machinery provided by this application Figure 10 Six;

[0046] Figure 17 Structural schematic of the power system of the construction machinery provided by this application Figure 10 Seven;

[0047] Figure 18 Structural schematic of the construction machinery provided by this application.

[0048] Reference numerals:

[0049] Power system 10;

[0050] First electric drive axle 101;

[0051] Superstructure system 102;

[0052] First system 1021;

[0053] Second system 1022;

[0054] Third system 1023;

[0055] Traveling system 103;

[0056] Electric control unit 104;

[0057] Second electric drive axle 105;

[0058] Battery system 106;

[0059] Power generation system assembly 107;

[0060] External power supply interface 108;

[0061] Construction machinery 180.

[0062] Through the above-mentioned drawings, specific embodiments of this application have been shown, and there will be more detailed descriptions hereinafter. These drawings and written descriptions are not intended to limit the scope of the concept of this application in any way, but to illustrate the concept of this application to those skilled in the art by referring to specific embodiments. Detailed implementation manners

[0063] Here, the exemplary embodiments will be described in detail, and the examples are shown in the drawings. When the following description refers to the drawings, unless otherwise indicated, the same numbers in different drawings represent the same or similar elements. The implementation manners described in the following exemplary embodiments do not represent all the implementation manners consistent with this application. On the contrary, they are merely examples of devices and methods consistent with some aspects of this application as detailed in the appended claims.

[0064] First, the application background involved in this application is explained:

[0065] In order to effectively reduce production costs and significantly improve its cost performance, the adoption of electrification technology has become the best way to achieve energy-saving economy. Electrification technology can not only reduce the dependence on traditional fuel, lower fuel costs, but also greatly reduce the vehicle's maintenance costs, because the electric system has fewer components, runs more stably, and has a lower failure rate compared to the traditional fuel system, thus being able to save a large amount of costs for users in the long term.

[0066] In the specific application of electrification technology, taking a pumping vehicle as an example, the fuel efficiency of the engine can be significantly improved through range-extended power generation. However, there is currently a problem that the relevant electric drives for driving and pumping operations both require the intervention of motors, and each component is driven by a separate motor. That is to say, the existing pumping vehicle requires at least 3 motors. Motor 1 is used to drive the vehicle, motor 2 is the generator for range-extended power generation, and motor 3 is used to drive the pump unit.

[0067] Although this method ensures the independence of the operation of each component to a certain extent, it leads to an extremely complex structural layout and a significant increase in control difficulty. At the same time, numerous separate motors also cause a substantial increase in the equipment procurement cost. From the purchase cost of the motors themselves to the cost of the control systems supporting them, the investment in the entire project has increased significantly.

[0068] In summary, the prior art has the technical problems of complex structural layout and high cost of construction machinery.

[0069] In view of the technical problems existing in the prior art, the concept of the inventors of this application is as follows: Considering that the driving mode and pumping mode of construction machinery are mutually exclusive, that is to say, construction machinery cannot perform pumping operations while driving, and similarly cannot drive while performing pumping operations. Based on this, the inventors thought that motors 1 and 3 could be combined, that is, motor 4 deployed in the electric drive axle could be used to replace motors 1 and 3, and both the upper mounting system (the system for controlling pumping operations) and the driving system were connected to the electric drive axle. In this way, the construction machinery can be controlled to drive or perform pumping operations through the electric drive axle, reducing the number of motors inside the construction machinery and achieving the purpose of streamlining the structure of the construction machinery and saving costs.

[0070] The technical solution of this application and how this technical solution solves the above technical problems will be described in detail below with specific embodiments. These specific embodiments below can be combined with each other, and the same or similar concepts or processes may not be repeated in some embodiments.

[0071] Next, an explanatory description will be given from three aspects: the power system of construction machinery, the construction machinery, and the control method of the power system of construction machinery.

[0072] I. Power System of Construction Machinery

[0073] Figure 1 The structural schematic of the power system of the construction machinery provided by this application Figure 1 . As Figure 1 shown, the power system 10 of the construction machinery includes: the first electric drive axle 101, the upper-mounted system 102, and the traveling system 103.

[0074] It should be understood that the construction machinery 180 can be a pump truck (or called a concrete pump truck), a wet shotcreting machine, a fire truck, etc., and the embodiments of this application do not make limitations here.

[0075] Among them, the first electric drive axle 101 is an electric drive system that highly integrates key components such as motors, reducers, and differentials. It is directly installed at the axle position of the construction machinery, replacing the engine, gearbox, and drive shaft structure of traditional fuel vehicles. The first electric drive axle 101 directly drives the wheels through the motor, realizing efficient energy conversion and power transmission, and has advantages such as a compact structure, high transmission efficiency, and fast response speed. It is widely used in pure electric and hybrid vehicle models.

[0076] Furthermore, the first electric drive axle 101 includes at least a first power output port and a second power output port, and the first electric drive axle 101 outputs power through the first power output port and the second power output port.

[0077] It should be understood that the first electric drive axle 101 can include 2 power output ports, and can also include more than 2 power output ports, which can be determined according to the actual situation. The embodiments of this application do not limit the number of power output ports included in the first electric drive axle 101.

[0078] Among them, the upper-mounted system 102 is the working system for the upper-mounted operation of the construction machinery 180. Specifically, the upper-mounted system 102 includes the first system 1021, the second system 1022, and the third system 1023.

[0079] Taking the construction machinery 180 as a concrete pump truck as an example, Table 1 is used to illustrate the specific implementation forms of the first system 1021, the second system 1022, and the third system 1023

[0080] Table 1

[0081] First system 1021 Second system 1022 Third system 1023 Implementation method 1 Pumping system Boom system Auxiliary drive system Implementation method 2 Pumping system Auxiliary drive system Boom system Implementation method 3 Boom system Pumping system Auxiliary drive system Implementation method 4 Auxiliary drive system Pumping system Boom system Implementation method 5 Boom system Auxiliary drive system Pumping system Implementation method 6 Auxiliary drive system Boom system Pumping system

[0082] Referring to Table 1, that is, the corresponding relationships among the first system 1021, the second system 1022, and the third system 1023, and the pumping system, the boom system, and the auxiliary drive system can be as follows: the first system 1021 is the pumping system, the second system 1022 is the auxiliary drive system, and the third system 1023 is the boom system; or, the first system 1021 is the auxiliary drive system, the second system 1022 is the pumping system, and the third system 1023 is the boom system; or, the first system 1021 is the pumping system, the second system 1022 is the boom system, and the third system 1023 is the auxiliary drive system; or, the first system 1021 is the boom system, the second system 1022 is the pumping system, and the third system 1023 is the auxiliary drive system; or, the first system 1021 is the boom system, the second system 1022 is the auxiliary drive system, and the third system 1023 is the pumping system; or, the first system 1021 is the auxiliary drive system, the second system 1022 is the boom system, and the third system 1023 is the pumping system.

[0083] The upper mounting system 102 can complete corresponding operation actions based on the power transmitted by the first electric drive axle 101. For example, it can be a pumping operation, or a boom operation, etc.

[0084] Next, the pumping system, the boom system, and the auxiliary drive system will be further explained.

[0085] The pumping system is a device used to transport fluid materials such as concrete from the ground to high places or far away. This pumping system usually includes components such as a concrete cylinder, a piston, a conveying pipeline, a distribution valve, and a hopper. The piston reciprocates in the concrete cylinder to achieve the suction and discharge of concrete. The distribution valve is used to control the flow direction of concrete between different pipelines. The hopper is used to store the concrete to be transported, and the conveying pipeline transports the concrete from the hopper to the operation point. After receiving power drive, the pumping system sucks in and pressurizes the concrete, and then transports the concrete to the designated position through the pipeline, realizing efficient and continuous material transportation to meet the requirements of operations such as concrete pouring in construction.

[0086] Optionally, the pumping system is driven by a motor for commutation, and the motor can drive a fixed-displacement pump or a motor pump.

[0087] The boom system is a device used to extend and position the pumping pipeline so that concrete can be accurately transported to the pouring position. The boom system generally includes multiple boom sections, connecting hinge points, oil cylinders, slewing mechanisms and other components. The booms are connected to each other through the connecting hinge points and can be extended and folded under the drive of the oil cylinders; the slewing mechanism is installed at the bottom of the boom to enable the boom to rotate in the horizontal direction, thereby realizing all-round placing operations. After receiving the power drive, the boom system extends, folds and rotates the boom and other actions to extend the pumping pipeline to different positions and heights, expanding the concrete pouring range and improving the flexibility and convenience of construction.

[0088] The auxiliary drive system is mainly used to assist the power system 10 of the construction machinery to better complete the work and at the same time provide power for some auxiliary equipment on the construction machinery. Exemplarily, when the pumping system is working, the auxiliary drive system can provide additional power support for the pumping system, especially when pumping high-viscosity concrete or long-distance pumping, to help the main pumping system transport concrete more stably and efficiently. For example, an auxiliary hydraulic pump can be added to provide higher pressure for the pumping oil cylinder to ensure that the concrete can be smoothly transported from the hopper to the conveying pipeline and reach the pouring position. The auxiliary drive system can also provide power for other auxiliary equipment on the construction machinery 180, such as a water pump for cleaning the pipeline and the vehicle body, a fan for dissipating heat from the hydraulic system, a generator for lighting, etc. These auxiliary equipment play an important role in ensuring the normal operation and maintenance of the construction machinery 180. For example, after the work is completed, the cleaning water pump uses the power provided by the auxiliary drive system to pressurize the water in the water tank and transport it through the pipeline to each part that needs to be cleaned to clean the concrete conveying pipeline and the vehicle body to prevent the concrete from remaining and solidifying. It should be noted that the embodiments of the present application do not limit the functions and structures of the auxiliary drive system.

[0089] Further, the first power output port is connected to at least one of the first system 1021, the second system 1022 and the third system 1023 in the upper mounting system 102 to output power; the second power output port is connected to at least one of the remaining of the first system 1021, the second system 1022 and the third system 1023 in the upper mounting system 102 to output power.

[0090] It should be understood that the specific connection method between the first electric drive axle 101 and the upper mounting system 102 will be described in detail through the following embodiments and will not be elaborated here.

[0091] Further, the traveling system 103 is used to drive the construction machinery 180 to travel, and the first electric drive axle 101 is connected to the traveling system 103 in a direct drive manner;

[0092] Among them, the direct drive method refers to a drive form in which the first electric drive axle 101 is directly connected to the driving system 103 through a rigid coupling or flange without passing through intermediate mechanical transmission components such as a traditional gearbox and a drive shaft. It can eliminate the energy loss in intermediate links such as gear reduction, enable the torque and speed output by the first electric drive axle 101 to directly act on the driving system 103, improve the transmission efficiency and response speed, and simplify the internal structure of construction machinery.

[0093] Optionally, a power control device can also be provided inside the first electric drive axle 101, and the free connection or disconnection of any power output port can be achieved whether the motor inside the first electric drive axle 101 is in a shutdown state or an operating state.

[0094] In a possible implementation manner, the first electric drive axle 101 can obtain an electric drive instruction, which is used to drive the operation of the upper mounting system 102 or the driving system 103 in the construction machinery 180. Specifically, the electric drive instruction is used to control the power on / off (which can be simply referred to as on / off) of any power output port in the electric drive axle (the first electric drive axle 101 or the second electric drive axle 105), and to control the electric drive axle (the first electric drive axle 101 or the second electric drive axle 105) and the driving system 103 of the boom system.

[0095] Optionally, the electric drive instruction can be obtained from the electronic control unit 104 in the construction machinery 180, and the electric drive instruction is generated according to the working mode of the construction machinery 180 input by the user, and the working mode is a pumping mode or a driving mode.

[0096] Optionally, when the working mode is the pumping mode, the electric drive instruction can also be generated according to the operation state, and the operation state includes at least one of a pumping operation state, a material waiting operation state, a boom movement state, and a outrigger movement state.

[0097] It should be understood that the electric drive instruction can be generated by the electronic control unit 104 and sent to the first electric drive axle 101, or can be generated by the vehicle control unit (VCE) in the construction machinery 180 and forwarded to the first electric drive axle 101 through the electronic control unit 104. The embodiments of the present application do not limit the generation method of obtaining the electric drive instruction.

[0098] It should be understood that the operation process of driving the upper mounting system 102 or the driving system 103 in the construction machinery 180 according to the electric drive instruction will be specifically explained in the embodiments of the control method of the power system 10 of the subsequent construction machinery, and will not be elaborated here.

[0099] The power system 10 of the construction machinery provided by the embodiment of the present application includes a first electric drive axle 101, an upper-mounted system 102, and a traveling system 103; wherein, the upper-mounted system 102 includes a first system 1021, a second system 1022, and a third system 1023; the first electric drive axle 101 is connected to the traveling system 103 in a direct drive manner; the first electric drive axle 101 includes at least a first power output port and a second power output port; the first power output port is connected to at least one of the first system 1021, the second system 1022, and the third system 1023 in the upper-mounted system 102 to output power; the second power output port is connected to at least one of the remaining ones of the first system 1021, the second system 1022, and the third system 1023 in the upper-mounted system 102 to output power. In this system, the electric drive axle is connected to both the upper-mounted system 102 and the traveling system 103 at the same time, so that the construction machinery 180 can be controlled to travel or pump by one motor (the motor inside the first electric drive axle 101), achieving the purpose of streamlining the system structure of the construction machinery 180 and saving costs.

[0100] Next, the specific connection method between the first electric drive axle 101 and the upper-mounted system 102 will be described in detail.

[0101] Connection method 1: The first power output port is connected to the first system 1021 and the second system 1022. The first power output port outputs the power output by the first electric drive axle 101 to the first system 1021 and / or the second system 1022; the second power output port is connected to the third system 1023, and the second power output port outputs the power output by the first electric drive axle 101 to the third system 1023.

[0102] In connection method 1, the specific connection method between the first power output port and the first system 1021 and the second system 1022 may include Figure 2 and Figure 3 the embodiments shown.

[0103] Figure 2 Schematic diagram of the structure of the power system of the construction machinery provided by the present application Figure 2 As Figure 2 shown, the first power output port is connected to the first system 1021 to deliver the power output by the first electric drive axle 101 to the first system 1021; the first system 1021 is connected to the second system 1022, and the first system 1021 delivers the power output by the first electric drive axle 101 to the second system 1022.

[0104] Figure 3 Schematic diagram of the structure of the power system of the construction machinery provided by the present application Figure 3 As Figure 3As shown, the first power output port is connected to the second system 1022 to deliver the power output by the first electric drive axle 101 to the second system 1022; the second system 1022 is connected to the first system 1021, and the second system 1022 delivers the power output by the first electric drive axle 101 to the first system 1021.

[0105] Connection method 2: The second power output port is connected to the first system 1021 and the second system 1022, and the second power output port outputs the power output by the first electric drive axle 101 to the first system 1021 and / or the second system 1022; the first power output port is connected to the third system 1023, and the second power output port outputs the power output by the first electric drive axle 101 to the third system 1023.

[0106] In connection 2, the specific connection methods of the second power output port to the first system 1021 and the second system 1022 may include Figure 4 and Figure 5 the two embodiments shown.

[0107] Figure 4 Structural schematic of the power system of the construction machinery provided by this application Figure 4 As Figure 4 shown, the second power output port is connected to the first system 1021 to deliver the power output by the first electric drive axle 101 to the first system 1021; the first system 1021 is connected to the second system 1022, and the first system 1021 delivers the power output by the first electric drive axle 101 to the second system 1022.

[0108] Figure 5 Structural schematic of the power system of the construction machinery provided by this application Figure 5 As Figure 5 shown, the second power output port is connected to the second system 1022 to deliver the power output by the first electric drive axle 101 to the second system 1022; the second system 1022 is connected to the first system 1021, and the second system 1022 delivers the power output by the first electric drive axle 101 to the first system 1021.

[0109] Connection method 3: The first power output port is connected to the first system 1021 and the third system 1023, and the first power output port outputs the power output by the first electric drive axle 101 to the first system 1021 and / or the third system 1023; the second power output port is connected to the second system 1022, and the second power output port outputs the power output by the first electric drive axle 101 to the second system 1022.

[0110] In connection method 3, the specific connection methods of the first power output port to the first system 1021 and the third system 1023 may include Figure 6 and Figure 7There are two embodiments as shown below.

[0111] Figure 6 The structure schematic of the power system of the construction machinery provided by this application Figure 6 . As Figure 6 shown, the first power output port is connected to the first system 1021 to deliver the power output by the first electric drive axle 101 to the first system 1021; the first system 1021 is connected to the third system 1023, and the first system 1021 delivers the power output by the first electric drive axle 101 to the third system 1023.

[0112] Figure 7 The structure schematic of the power system of the construction machinery provided by this application Figure 7 . As Figure 7 shown, the first power output port is connected to the third system 1023 to deliver the power output by the first electric drive axle 101 to the third system 1023; the third system 1023 is connected to the first system 1021, and the third system 1023 delivers the power output by the first electric drive axle 101 to the first system 1021.

[0113] Connection method 4: The second power output port is connected to the first system 1021 and the third system 1023. The second power output port outputs the power output by the first electric drive axle 101 to the first system 1021 and / or the third system 1023; the first power output port is connected to the second system 1022, and the first power output port outputs the power output by the first electric drive axle 101 to the second system 1022.

[0114] In connection method 4, the specific connection methods between the second power output port and the first system 1021 and the third system 1023 may include Figure 8 and Figure 9 There are two embodiments as shown below.

[0115] Figure 8 The structure schematic of the power system of the construction machinery provided by this application Figure 8 . As Figure 8 shown, the second power output port is connected to the first system 1021 to deliver the power output by the first electric drive axle 101 to the first system 1021; the first system 1021 is connected to the third system 1023, and the first system 1021 delivers the power output by the first electric drive axle 101 to the third system 1023.

[0116] Figure 9 The structure schematic of the power system of the construction machinery provided by this application Figure 9 . As Figure 9As shown, the second power output port is connected to the third system 1023 to deliver the power output by the first electric drive axle 101 to the third system 1023; the third system 1023 is connected to the first system 1021, and the third system 1023 delivers the power output by the first electric drive axle 101 to the first system 1021.

[0117] Connection method 5: The first power output port is connected to the first system 1021 and the third system 1023. The first power output port outputs the power output by the first electric drive axle 101 to the first system 1021 and / or the third system 1023; the first power output port is connected to the second system 1022, and the first power output port outputs the power output by the first electric drive axle 101 to the second system 1022.

[0118] In connection method 5, the specific connection methods of the first power output port to the first system 1021 and the third system 1023 may include Figure 10 and Figure 11 the two embodiments shown.

[0119] Figure 10 Structural schematic of the power system of the construction machinery provided by the present application Figure 10 As Figure 10 shown, the first power output port is connected to the second system 1022 to deliver the power output by the first electric drive axle 101 to the second system 1022; the second system 1022 is connected to the third system 1023, and the second system 1022 delivers the power output by the first electric drive axle 101 to the third system 1023.

[0120] Figure 11 Structural schematic of the power system of the construction machinery provided by the present application Figure 10 As Figure 11 shown, the first power output port is connected to the third system 1023 to deliver the power output by the first electric drive axle 101 to the third system 1023; the third system 1023 is connected to the second system 1022, and the third system 1023 delivers the power output by the first electric drive axle 101 to the second system 1022.

[0121] Connection method 6: The second power output port is connected to the first system 1021 and the third system 1023. The second power output port outputs the power output by the first electric drive axle 101 to the first system 1021 and / or the third system 1023; the first power output port is connected to the second system 1022, and the first power output port outputs the power output by the first electric drive axle 101 to the second system 1022.

[0122] In connection method 6, the specific connection methods of the second power output port to the first system 1021 and the third system 1023 may include Figure 10 andFigure 11 There are two embodiments as shown below.

[0123] Figure 12 The following is a schematic diagram of the power system of the construction machinery provided by this application. Figure 10 II. As Figure 12 shown, the second power output port is connected to the second system 1022 to deliver the power output by the first electric drive axle 101 to the second system 1022; the second system 1022 is connected to the third system 1023, and the second system 1022 delivers the power output by the first electric drive axle 101 to the third system 1023.

[0124] Figure 13 The following is a schematic diagram of the power system of the construction machinery provided by this application. Figure 10 III. As Figure 13 shown, the second power output port is connected to the third system 1023 to deliver the power output by the first electric drive axle 101 to the third system 1023; the third system 1023 is connected to the second system 1022, and the third system 1023 delivers the power output by the first electric drive axle 101 to the second system 1022.

[0125] It should be understood that taking the second system 1022 being connected to the first power output port and the first system 1021 as an example, if the second system 1022 does not work during actual operation, the second system 1022 will rotate idly, but still deliver the power of the first electric drive axle 101 to the first system 1021.

[0126] That is to say, if the system directly connected to the power output port does not work during actual operation, it will rotate idly and deliver the power of the first electric drive axle 101 to other systems connected to it.

[0127] Optionally, in some embodiments, the first electric drive axle 101 is further provided with a third power output port.

[0128] Figure 14 The following is a schematic diagram of the power system of the construction machinery provided by this application. Figure 10 IV. As Figure 14 shown, the first power output port is connected to the first system 1021, and the first power output port delivers the power of the first electric drive axle 101 to the first system 1021; the second power output port is connected to the second system 1022, and the second power output port delivers the power of the first electric drive axle 101 to the second system 1022; the third power output port is connected to the third system 1023, and the third power output port delivers the power of the first electric drive axle 101 to the third system 1023.

[0129] In the above embodiments, by establishing a one-to-one correspondence between the power output ports and the systems, the decoupling performance between the systems is effectively improved.

[0130] It should be understood that there are also other corresponding relationships between the power output port and the system, which will not be listed and elaborated one by one here.

[0131] Based on any of the above embodiments, Figure 15 This is a schematic diagram of the structure of the power system of the construction machinery provided by this application Figure 10 Five. As Figure 15 shown, the power system 10 of the construction machinery further includes an electronic control unit 104. The electronic control unit 104 is connected to the first electric drive axle 101, and the electronic control unit 104 distributes electric energy to the first electric drive axle 101.

[0132] Among them, the electronic control unit 104 is used to send an electric drive instruction to the first electric drive axle 101.

[0133] The electronic control unit 104 can also be called a power distribution and control unit.

[0134] Optionally, the power system 10 further includes a second electric drive axle 105. On this basis, combined with Figure 14 , Figure 16 This is a schematic diagram of the structure of the power system of the construction machinery provided by this application Figure 10 Six. As Figure 16 shown, the second electric drive axle 105 is connected to the electronic control unit 104. The second electric drive axle 105 is connected to the traveling system 103 in a direct drive manner, and the first electric drive axle 101 and the second electric drive axle 105 output power to the traveling system 103.

[0135] Among them, the first electric drive axle 101 and the second electric drive axle 105 can be respectively connected to two axles of the construction machinery. For example, the first electric drive axle 101 is connected to the front axle, and the second electric drive axle 105 is connected to the rear axle, or the first electric drive axle 101 is connected to the rear axle, and the second electric drive axle 105 is connected to the front axle.

[0136] In the above embodiment, the power distribution to the front axle and the rear axle can be respectively carried out according to the actual working conditions of the construction machinery 180, effectively improving the accuracy of the control of the construction machinery.

[0137] In Figure 15 's basis, Figure 17 This is a schematic diagram of the structure of the power system of the construction machinery provided by this application Figure 10 Seven. As Figure 17 shown, the power system 10 further includes one or more of a battery system 106, a power generation system assembly 107, and an external power supply interface 108;

[0138] Among them, the battery system 106, the power generation system assembly 107, and the external power supply interface 108 are respectively connected to the electronic control unit 104 to supply electric energy to the electronic control unit 104.

[0139] In practical applications, the power generation system assembly 107 can be implemented as a generator set for charging the battery system 106 and supplying power to the electric drive axle. In the power generation state, the engine in the power generation system assembly 107 converts mechanical energy into electrical energy, enabling the power system 10 of the construction machinery to always operate in the high-efficiency zone, that is, with high oil-electricity conversion efficiency, to efficiently charge the battery system 106 and supply power to the electric drive axle 11 efficiently.

[0140] Among them, the electronic control unit 104 is also used to distribute the electrical energy provided by the battery system 106 to the systems connected to the first electric drive axle 101 through the first electric drive axle 101, and to the systems connected to the second electric drive axle 105 through the second electric drive axle 105.

[0141] Among them, the external power supply interface 108 is used to connect to an external power supply, enabling the construction machinery 180 to obtain electrical energy from the outside. For example, when the construction machinery 180 is parked for a long time or the battery system 106 has insufficient power, the battery system 106 can be charged through an external power supply to shorten the charging time or meet specific working requirements.

[0142] Optionally, the external power supply can be the power of a mobile power supply vehicle or a power supply device providing external AC mains power.

[0143] That is to say, the external power supply is used to charge the battery system 106 and supply power to the electric drive axle (the first electric drive axle 101 or the second electric drive axle 105).

[0144] The battery system 106 is used to store electrical energy and provide power support for the startup, operation, and pumping operation of the construction machinery 180.

[0145] Optionally, the battery system 106 supports mobile battery swapping, mobile power supply vehicle charging, and external plug-in charging functions.

[0146] It should be understood that the power generation system assembly 107 and the external power supply can be selected to charge the battery system and / or supply power to the electric drive axle, or can charge the battery system 106 and supply power to the electric drive axle at the same time, or one can charge the battery system 106 and the other can supply power to the electric drive axle, which can be set according to actual situations, and the embodiments of the present application do not specifically limit this.

[0147] Exemplarily, both the traveling system 103 and the pumping system are electrically driven. Traveling power source: one or both of the electricity generated by the battery system 106 or the power generation system assembly 107 drive; Pumping operation power source: the electricity generated by the battery system 106 or the power generation system assembly 107, external mains power / mobile power supply.

[0148] It should be understood that the power generation system assembly 107, the battery system 106, the electric drive axle, the power distribution and electric control unit 104, and the running system 103 belong to the chassis running system 103, and the chassis running system 103 and the superstructure system 102 together constitute the power system 10 of the construction machinery.

[0149] It should be understood that when the construction machinery 180 is in the running mode, the electric control unit 104 or the VCE can also adjust the power supply of the battery system 106 and the power generation power of the power generation system assembly 107 in real time according to the magnitude of the running demand power.

[0150] Exemplarily, the VCE dynamically distributes the output ratio of the battery system 106 and the power generation system assembly 107 by collecting parameters such as the throttle pedal signal, vehicle speed, battery SOC, and load torque in real time and combining the preset energy management strategy (such as rule-based control or model predictive control): when the demand power is low, the battery system 106 is preferentially used for power supply (such as light-load running), and when the power demand suddenly increases (such as climbing or accelerating), the power generation system assembly 107 is automatically started to supply power together, and the energy utilization rate is optimized by motor regenerative power generation during braking.

[0151] In the above embodiment, a hybrid structure of the power generation system assembly 107 + the battery system 106 + the external power supply is adopted to achieve the comprehensive advantages of high efficiency, energy saving, reliability, stability, economy, and environmental protection: the power generation system assembly 107 ensures the high-load power demand, the battery system 106 optimizes the low-load energy efficiency and recovers energy, the external power supply provides zero-emission power supply in fixed scenarios, and the three complement each other to significantly reduce fuel consumption and power consumption. At the same time, the triple power supply paths form a redundant backup to ensure continuous operation without interruption, and the battery life is extended by combining the shallow charge and discharge strategy, which is applicable to various scenarios such as mobile / fixed operations.

[0152] Optionally, the electric control unit 104 distributes electric energy by monitoring the power demands and operating states of the first electric drive axle 101, the second electric drive axle 105, the first system 1021, the second system 1022, the third system 1023, and the running system 103 in the construction machinery 180 in real time and combining the remaining power and output capacity of the battery system 106. At the same time, an overload protection mechanism is integrated. When the state of charge (SOC) of the battery is lower than the threshold, the power reduction mode is automatically triggered, and the power consumption of non-essential systems is gradually limited in a preset order. For example, the power supply of the main hydraulic system for pumping is preferentially maintained while the operation of the cleaning device is suspended, and the power coordination between multiple systems is achieved in cooperation with the VCE through the Controller Area Network Bus (CAN) bus to ensure that the energy distribution not only meets the instantaneous peak demand but also takes into account the overall system efficiency and battery life.

[0153] II. Construction Machinery

[0154] Figure 18 The structural schematic diagram of the construction machinery provided for this application. As Figure 18 shown, a power system 10 of the construction machinery as shown in any one of the Figures 1 - 17 embodiments is provided in the construction machinery 180.

[0155] III. Control method for the power system of the construction machinery

[0156] It should be understood that this method is applied to the electronic control unit in the construction machinery in the above embodiments.

[0157] Specifically, the control method for the power system of the construction machinery includes: sending an electric drive instruction to the first electric drive axle in the construction machinery, so that the first electric drive axle drives the operation of the upper-mounted system or the traveling system in the construction machinery;

[0158] wherein, the first electric drive axle is the first electric drive axle as shown in any one of the Figures 1 - 17 embodiments.

[0159] Optionally, since the first electric drive axle includes at least a first power output port and a second power output port. Therefore, the electric drive instruction can be executed to control the power on / off of the first power output port and / or the second power output port, so that the first electric drive axle drives the operation of the upper-mounted system or the traveling system in the construction machinery.

[0160] Wherein, the electric drive instruction is generated according to the working mode of the construction machinery input by the user.

[0161] Next, the method and principle for generating the electric drive instruction will be specifically explained through several embodiments.

[0162] Embodiment 1, physical switches corresponding to different working modes can be provided inside the cab of the construction machinery. The user (which can be a driver or an operator for the construction machinery, etc.) can press and turn on the corresponding physical switch according to the operation of the construction machinery required by himself / herself. For example, when it is necessary to control the construction machinery to travel, the user can press and turn on the physical switch corresponding to traveling. Correspondingly, the VCE responds to the user's pressing and turning on operation of the physical switch, obtains the working mode input by the user, and generates an electric drive instruction according to the pre-set first mapping relationship.

[0163] Wherein, the first mapping relationship is used to illustrate the corresponding relationship among the working mode, the first on / off state (the power on / off state of the power output port of the first electric drive axle), and the second on / off state (the power on / off state between the first electric drive axle and the traveling system). The VCE can determine the power on / off state of the power output port of the first electric drive axle and the power on / off state between the first electric drive axle and the traveling system according to the working mode input by the user and the pre-set first mapping relationship, and then generate the corresponding electric drive instruction.

[0164] In Embodiment 2, controls corresponding to different working modes can also be set on the central control screen of the construction machinery, and the user can input the corresponding working mode by clicking the controls.

[0165] In Embodiment 3, the construction machinery can also be wirelessly connected to a remote controller, and physical switches corresponding to different working modes are deployed in the remote controller. The user can input the corresponding working mode by clicking the physical switches in the remote controller.

[0166] In Embodiment 4, the construction machinery can also be wirelessly connected to an electronic device (such as a terminal device or a server, etc.). The electronic device displays a graphical user interface for the user to control the construction machinery through a display. The graphical user interface displays controls corresponding to different working modes, and the user can input the corresponding working mode by clicking the controls.

[0167] It should be understood that the processing operations of the VCE after obtaining the working mode input by the user in Embodiments 2 - 4 are the same as the corresponding parts in Embodiment 2, that is, according to the pre-set first mapping relationship and the working mode input by the user, an electric drive instruction is generated.

[0168] Taking a concrete pump truck as an example of the construction machinery, since the upper mounting system includes multiple systems, such as a pumping system, a boom system, and an auxiliary drive system, the power requirements of each system are different in different operating states. Therefore, in order to improve the accuracy of controlling the construction machinery, when the working mode is the pumping mode, the VCE can further obtain the operating state, and then generate an electric drive instruction in combination with the operating state.

[0169] Specifically, when the working mode is the pumping mode, the operating state can include at least one of the following: pumping operation state, material waiting operation state, boom movement state, and outrigger movement state.

[0170] It should be understood that when only in the pumping operation state, the operating state can also be referred to as the pure pumping operation state at this time.

[0171] Exemplarily, the way for the VCE to determine the operating state is the same as the way to determine the working mode described above, that is, it can be obtained through the physical switches inside the cab, the central control screen, the remote controller wirelessly connected to the construction machinery, and the electronic device, which will not be elaborated here.

[0172] Optionally, the VCE can also determine whether the operating state is the boom movement state through the joystick of the boom. For example, if the user controls the boom to extend, retract, rotate, and fold through the joystick, it is determined that the operating state is the boom movement state.

[0173] Specifically, after determining the operating state, an electric drive instruction can be determined according to the pre-set second mapping relationship and the operating state.

[0174] Among them, the second mapping relationship is used to illustrate the corresponding relationship between the operation state and the power on / off state of each power output port in the first electric drive axle. VCE can determine the power on / off state of each power output port in the first electric drive axle according to the operation state and the preset second mapping relationship, and then generate corresponding electric drive instructions to precisely control each system.

[0175] Exemplarily, the first mapping relationship can be represented by Table 2 below:

[0176] Table 2

[0177] Operating mode First on - off state Second on - off state Travel mode Disconnected Connected Pumping mode Connected Disconnected

[0178] It should be understood that the first on / off state is the power on / off state of the power output port of the first electric drive axle, and the second on / off state is the power on / off state between the first electric drive axle and the driving system.

[0179] Generally speaking, if the working mode is the driving mode, the electric drive instruction is used to indicate that the power of the power output port in the first electric drive axle is disconnected and the first electric drive axle is connected to the driving system; if the working mode is the pumping mode, the electric drive instruction is used to indicate that the power of the power output port in the first electric drive axle is connected and the first electric drive axle is disconnected from the driving system.

[0180] It should be understood that when the working mode is the driving mode, the upper mounting system corresponding to the pumping mode does not need to obtain power, so the power of the power output port can be controlled to be disconnected; similarly, when the working mode is the pumping mode, the driving system does not need to obtain power, so the power between the first electric drive axle and the driving system can be controlled to be disconnected. By utilizing the mutually exclusive characteristics of the driving mode and the pumping mode, and by executing the electric drive instruction, power is provided to different systems according to different operation states. With one motor, it can drive two working modes, namely driving and pumping, achieving the purpose of streamlining the system structure of construction machinery and saving costs. At the same time, by dynamically cutting off the power supply of non-essential systems (such as disconnecting the driving system during pumping), the no-load loss can be effectively eliminated, enabling the energy to focus on the current core task, and effectively reducing the overload probability and failure rate of multi-system parallel operation.

[0181] Referring to Table 2, assuming that the working mode input by the user is the driving mode, according to Table 2, it can be known that the first on / off state corresponding to the driving mode is disconnected, and the second on / off state is connected. Then, an electric drive instruction is generated to control the power of the power output port to be disconnected and control the power between the first electric drive axle and the driving system to be connected.

[0182] The control method of the power system of the construction machinery provided by the embodiment of the present application. The electronic control unit sends an electric drive instruction to the first electric drive axle in the construction machinery, so that the first electric drive axle drives the operation of the upper mounting system or the driving system in the construction machinery. In the embodiment of the present application, by using the characteristic that the driving mode and the pumping mode are mutually exclusive, and by executing the electric drive instruction, one motor can be used to drive both the driving and pumping working modes, achieving the purpose of streamlining the system structure of the construction machinery and saving costs. At the same time, by dynamically cutting off the power supply of unnecessary systems (such as disconnecting the driving system during pumping), the no-load loss can be effectively eliminated, enabling the energy to focus on the current core task, and effectively reducing the overload probability and failure rate of the parallel operation of multiple systems.

[0183] Taking a concrete pump truck as an example of the construction machinery, since the upper mounting system includes multiple systems, such as a pumping system, a boom system, and an auxiliary drive system, the power requirements of each system are different in different operating states. Therefore, in order to improve the accuracy of controlling the construction machinery, when the working mode is the pumping mode, the operating state can be further obtained, and then an electric drive instruction is generated in combination with the operating state. The electric drive instruction is used to specifically control the on-off state of each power output port on the basis of controlling the power disconnection between the first electric drive axle and the driving system. That is, the electric drive instruction is still generated according to the operating state input by the user.

[0184] Optionally, in some embodiments, when the working mode is the pumping mode, the electric drive instruction is still generated according to the operating state, and the operating state includes at least one of a pumping operation state, a waiting-for-material operation state, a boom movement state, and a outrigger movement state.

[0185] Exemplarily, the method for determining the operating state is the same as the method for determining the working mode described above, that is, it can be obtained through physical switches inside the cab, a central control screen, a remote controller wirelessly connected to the construction machinery, and an electronic device, which will not be elaborated here.

[0186] Optionally, the operating state can also be determined as the boom movement state through the boom joystick. For example, if the user controls the boom to extend, retract, rotate, and fold through the joystick, the operating state is determined as the boom movement state. Specifically, after determining the operating state, the part of the electric drive instruction for specifically controlling the on-off state of each power output port can be determined according to the pre-set second mapping relationship and the operating state.

[0187] In this embodiment, taking a concrete pump truck as an example of the construction machinery, when the working mode is the pumping mode, the electric drive instruction is used to indicate the power connection of the power output ports in the first electric drive axle, specifically including:

[0188] If the working mode is the pumping mode, when the operation status is the pumping operation status or the material waiting operation status, the electric drive instruction is used to indicate that the power output port connected to the pumping system in the first electric drive axle is power-connected, the power output port connected to the auxiliary drive system in the first electric drive axle is power-connected, and the power output port connected to the boom system in the first electric drive axle is power-disconnected;

[0189] When simultaneously in the pumping operation status and the boom movement status of the pumping mode, the electric drive instruction is used to indicate that the power output port connected to the pumping system in the first electric drive axle is power-connected, the power output port connected to the auxiliary drive system in the first electric drive axle is power-connected, and the power output port connected to the boom system in the first electric drive axle is power-connected;

[0190] When in the boom movement status or the outrigger movement status of the pumping mode, the electric drive instruction is used to indicate that the power output port connected to the pumping system in the first electric drive axle is power-disconnected, the power output port connected to the auxiliary drive system in the first electric drive axle is power-disconnected, and the power output port connected to the boom system in the first electric drive axle is power-connected.

[0191] Since when the number of power output ports of the first electric drive axle is different, the connection modes of the auxiliary drive system, the pumping system, and the boom system to the first electric drive axle are different. Therefore, Example A is used to explain the process of generating the electric drive instruction when the number of power output ports is two and the working mode is the pumping mode; and Example B is used to explain the process of generating the electric drive instruction when the number of power output ports is three and the working mode is the pumping mode.

[0192] Example A: The number of power output ports is two and the working mode is the pumping mode

[0193] Exemplarily, at this time, the second mapping relationship can be represented by Table 3:

[0194] Table 3

[0195] Operating status Power output port A Power output port B Pumping operation status or waiting - for - material operation status Connected Disconnected Pumping operation status + boom action status Connected Connected Boom action status or outrigger action status Disconnected Connected

[0196] Referring to Table 3, among them, power output port A is the power output port connected to the pumping system and the auxiliary drive system, and power output port B is the power output port connected to the boom system. Assuming that the operation status is the pumping operation status (which can also be called the pure pumping operation status), then according to Table 3, the connection status of power output port A corresponding to the pure pumping operation status is connected, and the connection status of power output port B is disconnected. Then, an electric drive instruction is generated to control power output port A to be connected and control the connection status of power output port B to be disconnected.

[0197] That is to say, when the working mode is the pumping mode, if it is in the pumping operation state or the material waiting operation state, control the power output port A to be connected and control the power output port B to be disconnected; if it is simultaneously in the pumping operation state and the boom movement state of the pumping mode, control the power output port A and the power output port B to be connected; if it is in the boom movement state or the outrigger movement state of the pumping mode, control the power output port A to be disconnected and control the power output port B to be connected.

[0198] It should be understood that in addition to the above control, it is also necessary to control the power disconnection between the first electric drive axle and the driving system.

[0199] Embodiment B: The number of power output ports is three, and the working mode is the pumping mode

[0200] Exemplarily, at this time, the second mapping relationship can be represented by Table 4:

[0201] Table 4

[0202]

[0203] As shown in Table 4, among them, the power output port C is the power output port connected to the pumping system, the power output port D is the power output port connected to the auxiliary drive system, and the power output port E is the power output port connected to the boom system.

[0204] Correspondingly, when the working mode is the pumping mode, if it is in the pumping operation state of the pumping mode, control the power output port C and the power output port D to be connected and control the power output port E to be disconnected; if it is simultaneously in the pumping operation state and the boom movement state of the pumping mode, control the power output port C, the second power, and the power output port E to be connected; if it is in the boom movement state or the outrigger movement state of the pumping mode, control the power output port C and the power output port D to be disconnected and control the power output port E to be connected.

[0205] It should be understood that in addition to the above control, it is also necessary to control the power disconnection between the first electric drive axle and the driving system.

[0206] In the above embodiments, activating the corresponding power output port according to the specific work (i.e., the operation state) required by the user and stopping power supply to the non-essential systems can effectively reduce the no-load loss. At the same time, when the outriggers move, actively disconnect the pumping power chain to prevent vibration from being transmitted to the precision hydraulic components and extend the service life of the valve group.

[0207] Optionally, in some embodiments, when the driving power required by the first electric drive axle is greater than the power supply power of the battery system, control the power generation system assembly in the construction machinery to generate power; when the driving power required by the first electric drive axle is less than or equal to the power supply power of the battery system, control the power generation system assembly in the construction machinery to stop generating power.

[0208] That is, the power supply of the battery system and the power generation power of the power generation system assembly can be adjusted in real time according to the magnitude of the required driving power.

[0209] In the above embodiment, when the required power of the first electric drive axle exceeds the battery power supply capacity, the power generation system assembly automatically starts parallel power supply to ensure uninterrupted power and avoid overloading damage to the battery; when the required power is lower than the battery capacity, the power generation system assembly shuts down, and the battery is used for pure electric drive to achieve zero fuel consumption. The technical solution shown in this embodiment not only ensures the power reliability under heavy load conditions (such as climbing / pumping peak power), but also optimizes the energy efficiency through peak shaving and valley filling. At the same time, the battery life is greatly extended (reducing high-rate discharge and temperature rise), and finally, the triple improvements of economy (fuel cost savings), environmental protection (emission minimization), and system durability are achieved.

[0210] This application also provides a control device for the power system of a construction machine. The device is applied to the electronic control unit in the construction machine and includes:

[0211] A sending module, configured to send an electric drive instruction to the first electric drive axle in the construction machine, so that the first electric drive axle drives the operation of the upper mounting system or the traveling system in the construction machine;

[0212] Wherein, the first electric drive axle is the first electric drive axle shown in any of the above embodiments.

[0213] The control device for the power system of the construction machine provided in this embodiment can execute the control method for the power system of the construction machine provided in the above method embodiment. The implementation principle and technical effects are similar, and will not be elaborated here in this embodiment.

[0214] This application also provides a computer program product, including a computer program, which implements the above method when executed by the electronic control unit.

[0215] This application also provides a computer-readable storage medium, in which a computer execution instruction is stored. When the control unit executes the computer execution instruction, the above method is implemented.

[0216] The above-readable storage medium can be implemented by any type of volatile or non-volatile storage device or a combination thereof, such as static random access memory (SRAM), electrically erasable programmable read-only memory (EEPROM), erasable programmable read-only memory (EPROM), programmable read-only memory (PROM), read-only memory (ROM), magnetic memory, flash memory, magnetic disk or optical disk. The readable storage medium can be any available medium accessible by a general-purpose or special-purpose computer.

[0217] An exemplary readable storage medium is coupled to an electronic control unit, enabling the electronic control unit to read information from the readable storage medium and write information to the readable storage medium. Of course, the readable storage medium can also be a component of the electronic control unit. The electronic control unit and the readable storage medium can be located in an Application Specific Integrated Circuits (ASIC). Of course, the electronic control unit and the readable storage medium can also exist as discrete components in a device.

[0218] The division of units is only a logical function division. In actual implementation, there can be other division methods. For example, multiple units or components can be combined or integrated into another system, or some features can be ignored or not executed. Another point is that the couplings or direct couplings or communication connections shown or discussed between each other can be through some interfaces, and the indirect couplings or communication connections of devices or units can be in electrical, mechanical or other forms.

[0219] The units described as separate components may or may not be physically separated. The components shown as units may or may not be physical units, that is, they can be located in one place or distributed to multiple network units. Some or all of the units can be selected according to actual needs to achieve the purpose of the solution of this embodiment.

[0220] In addition, in each embodiment of the present invention, the functional units can be integrated in a processing unit, or each unit can exist physically alone, or two or more units can be integrated in one unit.

[0221] If the function is implemented in the form of a software functional unit and sold or used as an independent product, it can be stored in a computer-readable storage medium. Based on such an understanding, the technical solution of the present invention, in essence, or the part that contributes to the prior art, or part of this technical solution, can be embodied in the form of a software product. This computer software product is stored in a storage medium and includes several 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 in each embodiment of the present invention. The aforementioned storage medium includes: various media such as USB flash drives, mobile hard disks, read-only memories (ROM, Read-Only Memory), random access memories (RAM, Random Access Memory), magnetic disks, or optical discs that can store program codes.

[0222] Those of ordinary skill in the art can understand that all or part of the steps to implement the above method embodiments can be completed by hardware related to program instructions. The foregoing program can be stored in a computer-readable storage medium. When the program is executed, it performs the steps including the above method embodiments; and the foregoing storage medium includes: various media such as ROM, RAM, magnetic disk, or optical disk that can store program codes.

[0223] Finally, it should be noted that those skilled in the art will readily think of other embodiments of the present invention after considering the specification and practicing the invention disclosed herein. The present invention is intended to cover any variations, uses, or adaptations of the present invention, which follow the general principles of the present invention and include known common knowledge or conventional technical means in the technical field not disclosed by the present invention. It is not limited to the exact structures described above and shown in the drawings, and various modifications and changes can be made without departing from its scope. The scope of the present invention is only limited by the appended claims.

Claims

1. A power system of a construction machinery, characterized in that, Comprising: A first electric drive axle, an upper-mounted system, and a driving system; wherein, the upper-mounted system includes a first system, a second system, and a third system; The first electric drive axle is connected to the driving system by a direct drive method; the first electric drive axle includes at least a first power output port and a second power output port; The first power output port is connected to at least one of the first system, the second system, and the third system in the upper-mounted system to output power; the second power output port is connected to at least one of the remaining ones of the first system, the second system, and the third system in the upper-mounted system to output power.

2. The power system according to claim 1, wherein, The first power output port is connected to the first system and the second system, and the first power output port outputs the power output by the first electric drive axle to the first system and / or the second system; The second power output port is connected to the third system, and the second power output port outputs the power output by the first electric drive axle to the third system.

3. The power system according to claim 2, characterized in that, The first power output port is connected to the first system to convey the power output by the first electric drive axle to the first system; the first system is connected to the second system, and the first system conveys the power output by the first electric drive axle to the second system.

4. The power system according to claim 1, characterized in that, The first electric drive axle is further provided with a third power output port; The first power output port is connected to the first system, and the first power output port conveys the power of the first electric drive axle to the first system; the second power output port is connected to the second system, and the second power output port conveys the power of the first electric drive axle to the second system; the third power output port is connected to the third system, and the third power output port conveys the power of the first electric drive axle to the third system.

5. The power system according to any one of claims 1-4, characterized in that, The first system is a pumping system, the second system is an auxiliary drive system, and the third system is a boom system; Or, the first system is an auxiliary drive system, the second system is a pumping system, and the third system is a boom system; Or, the first system is a pumping system, the second system is a boom system, and the third system is an auxiliary drive system; Or, the first system is a boom system, the second system is a pumping system, and the third system is an auxiliary drive system; Or, the first system is a boom system, the second system is an auxiliary drive system, and the third system is a pumping system; Or, the first system is an auxiliary drive system, the second system is a boom system, and the third system is a pumping system.

6. The power system according to any one of claims 1-4, characterized in that, The power system further includes an electronic control unit; the electronic control unit is connected to the first electric drive axle, and the electronic control unit distributes electric energy to the first electric drive axle.

7. The power system according to claim 6, wherein The power system further includes a second electric drive axle, the second electric drive axle is connected to the electronic control unit, the second electric drive axle is connected to the driving system by a direct drive method, and the first electric drive axle and the second electric drive axle output power to the driving system.

8. The power system according to claim 6, wherein The power system further includes one or more of a battery system, a power generation system assembly, and an external power supply interface; Among them, the battery system, the power generation system assembly, and the external power supply interface are respectively connected to the electronic control unit to deliver electric energy to the electronic control unit.

9. An engineering machinery, characterized in that, The construction machinery is provided with the power system of the construction machinery according to any one of claims 1-8.

10. A control method for a power system of a construction machinery, characterized in that, The method is applied to the electronic control unit in the construction machinery, and the method includes: Sending an electric drive command to the first electric drive axle in the construction machinery so that the first electric drive axle drives the operation of the upper mounting system or the traveling system in the construction machinery; Among them, the first electric drive axle is the first electric drive axle according to any one of claims 1-8.

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