Power system and engineering machinery

Abstract

The utility model provides a power system and engineering machinery. The power system and the engineering machinery comprise a driving motor, a gearbox, a loading system and a traveling system, the loading system comprises a first system, a second system and a third system; wherein the driving motor is connected with the gearbox; a power take-off port of the gearbox is connected with a first system, a second system and a third system in the loading system so as to transmit power transmitted by the driving motor to the first system, the second system and the third system; the gearbox is connected with the traveling system in a direct drive mode so as to transmit power transmitted by the driving motor to the traveling system. According to the power system and the engineering machine, switching between loading operation and running can be directly conducted through the gearbox, a transmission link is shortened, and the effect of improving the transmission efficiency of the engineering machine in the power switching process is achieved.

Description

Technical Field

[0001] This application relates to the field of engineering machinery technology, and in particular to a power system and engineering machinery. Background Technology

[0002] Construction machinery needs to perform driving or superstructure operations. During superstructure operations, the boom system can be used to control the boom's movement, the pumping system can be used to control the material conveying, and the auxiliary drive system can be used to control the material mixing.

[0003] In some technologies, the engine of construction machinery is connected to a transfer case via a transmission, which enables power switching between driving and superstructure operation. However, these technologies suffer from low transmission efficiency.

[0004] Therefore, there is an urgent need for a solution to improve transmission efficiency during power switching in engineering machinery. Utility Model Content

[0005] This application provides a power system and engineering machinery to solve the problem of low transmission efficiency during power switching in engineering machinery.

[0006] On one hand, this application provides a power system, including:

[0007] Drive motor, gearbox, superstructure system, and driving system; the superstructure system includes a first system, a second system, and a third system;

[0008] The drive motor is connected to the gearbox; the power take-off port of the gearbox is connected to the first system, the second system and the third system of the superstructure system to transmit the power transmitted by the drive motor to the first system, the second system and the third system; the gearbox is connected to the driving system through direct drive to transmit the power transmitted by the drive motor to the driving system.

[0009] In one possible implementation, the gearbox includes a first power take-off port and a second power take-off port;

[0010] The first power take-off port is connected to the first system, and the gearbox transmits the power from the drive motor to the first system through the first power take-off port; the second power take-off port is connected to the second system and the third system, and the gearbox transmits the power from the drive motor to the second system and / or the third system through the second power take-off port.

[0011] In one possible implementation, the gear of the first power take-off port of the gearbox is connected to the gear of the first system so as to transmit the power transmitted by the drive motor to the first system through the first power take-off port;

[0012] The gear at the second power take-off port of the gearbox is connected to the gear of the second system to transmit the power from the drive motor to the second system and / or the third system through the second power take-off port.

[0013] In one possible implementation, the second power take-off port is connected to the second system, and the second system is connected to the third system.

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

[0015] Alternatively, the first system may be a pumping system, the second system an auxiliary drive system, and the third system a boom system.

[0016] Alternatively, the first system may be a pumping system, the second system a boom system, and the third system an auxiliary drive system.

[0017] Alternatively, the first system may be a boom system, the second system a pumping system, and the third system an auxiliary drive system.

[0018] Alternatively, the first system may be a boom system, the second system an auxiliary drive system, and the third system a pumping system.

[0019] Alternatively, the first system can be an auxiliary drive system, the second system a boom system, and the third system a pumping system.

[0020] In one possible implementation, the gearbox includes a first power take-off port, a second power take-off port, and a third power take-off port;

[0021] The first power take-off port is connected to the first system, and the first power take-off port transmits the power from the drive motor to the first system; the second power take-off port is connected to the second system, and the second power take-off port transmits the power from the drive motor to the second system; the third power take-off port is connected to the third system, and the third power take-off port transmits the power from the drive motor to the third system.

[0022] In one possible implementation, the power system further includes an all-in-one module, to which the drive motor is connected, and the all-in-one module controls the operation of the drive motor.

[0023] In one possible implementation, the power system further includes a high-voltage box; the high-voltage box is connected to the multi-function module, and the high-voltage box controls the multi-function module to supply power to the drive motor.

[0024] In one possible implementation, the power system also includes a battery; the battery is connected to a high-voltage box to provide electrical energy to the drive motor via the high-voltage box and the all-in-one module.

[0025] In one possible implementation, the power system also includes a range extender; the range extender is connected to a high-voltage box to provide electrical energy to the drive motor via the high-voltage box and the all-in-one module.

[0026] In one possible implementation, the high-voltage box is provided with a charging port for connecting to an external power source; the charging port is used to deliver electrical energy from the external power source to the high-voltage box.

[0027] On the other hand, this application provides an engineering machine that is equipped with the power system provided in the first aspect above.

[0028] The power system and construction machinery provided in this application connect a drive motor to a gearbox, which in turn connects the superstructure system and the driving system. The gearbox transmits the power of the drive motor to either the driving system or the superstructure system, enabling direct switching between superstructure operation and driving via the gearbox. This shortens the transmission link and improves the transmission efficiency of the construction machinery during power switching. Attached Figure Description

[0029] The accompanying drawings, which are incorporated in and form part of this specification, illustrate embodiments consistent with this application and, together with the description, serve to explain the principles of this application.

[0030] Figure 1 The structural schematic diagram of the power system provided in this application Figure 1 ;

[0031] Figure 2 The structural schematic diagram of the power system provided in this application Figure 2 ;

[0032] Figure 3 The structural schematic diagram of the power system provided in this application Figure 3 ;

[0033] Figure 4 The structural schematic diagram of the power system provided in this application Figure 4 ;

[0034] Figure 5 The structural schematic diagram of the power system provided in this application Figure 5 ;

[0035] Figure 6 The structural schematic diagram of the power system provided in this application Figure 6 ;

[0036] Figure 7 The structural schematic diagram of the power system provided in this application Figure 7 ;

[0037] Figure 8 The structural schematic diagram of the power system provided in this application Figure 8 ;

[0038] Figure 9The structural schematic diagram of the power system provided in this application Figure 9 ;

[0039] Figure 10 The structural schematic diagram of the power system provided in this application Figure 10 ;

[0040] Figure 11 The structural schematic diagram of the power system provided in this application Figure 10 one;

[0041] Figure 12 The structural schematic diagram of the power system provided in this application Figure 10 two;

[0042] Figure 13 The structural schematic diagram of the power system provided in this application Figure 10 three;

[0043] Figure 14 The structural schematic diagram of the power system provided in this application Figure 10 Four;

[0044] Figure 15 The structural schematic diagram of the power system provided in this application Figure 10 five.

[0045] Explanation of reference numerals in the attached figures:

[0046] 10: Power system; 101: Drive motor; 102: Gearbox; 103: Upper structure system; 1031: First system; 1032: Second system; 1033: Third system; 104: Driving system; 105: All-in-one module; 106: High voltage box; 107: Battery; 108: Range extender; 109: External power supply.

[0047] The accompanying drawings illustrate specific embodiments of this application, which will be described in more detail below. These drawings and descriptions are not intended to limit the scope of the concept in any way, but rather to illustrate the concept of this application to those skilled in the art through reference to particular embodiments. Detailed Implementation

[0048] Exemplary embodiments will now be described in detail, examples of which are illustrated in the accompanying drawings. When the following description relates to the drawings, unless otherwise indicated, the same numbers in different drawings denote the same or similar elements. The embodiments described in the following exemplary embodiments do not represent all embodiments consistent with this application. Rather, they are merely examples of apparatuses and methods consistent with some aspects of this application as detailed in the appended claims.

[0049] First, let me explain the terms used in this application:

[0050] Boom system: This refers to the system used in construction machinery to control the attitude and position of the boom. It can change the attitude and position of the boom. For example, construction machinery can be a concrete pump truck. Taking the actual application of a concrete pump truck as an example, the boom system can change the direction and position of the concrete being transported by the pump truck. When the pump truck needs to transport concrete to a high place or a distant location, the cylinders in the boom system push the boom to extend and raise it, so that the delivery pipe at the end of the boom reaches the designated location; while in transport or non-working state, the boom is controlled to fold, reducing the overall size of the vehicle for easier driving and parking.

[0051] Pumping system: This refers to a system used in construction machinery to transport materials. For example, the construction machinery may be a pump truck. Taking the practical application of a pump truck as an example, a pumping system is used to reliably transport concrete from the pump truck to a designated location.

[0052] Auxiliary drive system: This refers to an auxiliary drive system that assists in the operation of the superstructure. For example, a construction machine can be a concrete pump truck. Taking the actual application of a concrete pump truck as an example, the pumping system can transport concrete, and it can also be used to mix the concrete in the pump truck to ensure that the concrete and other materials remain uniformly mixed before or during pumping. It can also provide driving power for other auxiliary equipment of the pump truck.

[0053] Power take-off (PTO): Also known as a power take-off device, it is a device that is generally composed of one or more sets of transmission gears, clutches and controllers, used to output power to external working devices.

[0054] Construction machinery refers to mechanical equipment used in engineering operations. It can include pump trucks (or concrete pump trucks), wet spraying machines, fire trucks, and so on. Construction machinery is capable of both driving and performing superstructure operations. During driving, power is transmitted to the running system, then through the drive shaft to the drive axle, and finally distributed to the drive wheels, generating driving force on the ground to enable movement. During superstructure operations, power is transmitted to different gear pumps within the superstructure system. The movement of these gear pumps drives the superstructure system to perform the superstructure operations.

[0055] In some embodiments, the engine of the construction machinery is connected to a transfer case via a transmission. Furthermore, both the driving system and the superstructure system are connected to the transfer case. It can be understood that in the above embodiments, the transmission is used to change the power transmitted by the engine, including changing the speed and torque; while the transfer case is used to switch the power between driving and superstructure operation of the construction machinery.

[0056] In the above embodiments, the overall power transmission process involves the engine, transmission, and transfer case, with the transfer case enabling power switching between the driving system and the superstructure system. On one hand, the transmission link is relatively long, and energy loss occurs after power is transmitted through the transmission, resulting in low transmission efficiency in the construction machinery. On the other hand, the scheme of connecting the transfer case after the transmission occupies a large physical space, is costly, and is difficult to maintain.

[0057] To address the potential problems in the above embodiments, this application provides a power system and construction machinery. The system connects a drive motor to a gearbox, which in turn connects the superstructure system and the driving system. The gearbox transmits the power of the drive motor to either the driving system or the superstructure system, enabling direct switching between superstructure operation and driving via the gearbox. This shortens the transmission link and improves the transmission efficiency of the construction machinery during power switching.

[0058] The technical solution of this application and how it solves the above-mentioned technical problems will be described in detail below with specific embodiments. These specific embodiments can be combined with each other, and the same or similar concepts or processes may not be described again in some embodiments. The embodiments of this application will be described below with reference to the accompanying drawings.

[0059] Figure 1 The structural schematic diagram of the power system provided in this application Figure 1 ,like Figure 1 As shown, the power system 10 includes: a drive motor 101, a gearbox 102, a superstructure system 103, and a driving system 104.

[0060] The drive motor 101 is connected to the gearbox 102, and the gearbox 102 is connected to the superstructure system 103 and the driving system 104 respectively.

[0061] The gearbox 102 is used to transmit the power transmitted by the drive motor 101 to the superstructure system 103 for superstructure operation; or, it is used to transmit the power transmitted by the drive motor 101 to the driving system 104 for driving.

[0062] For example, a drive motor serves as a power source, and the drive motor may include a drive motor output shaft. The drive motor output shaft is connected to a gearbox, enabling the drive motor to transmit power to the gearbox. The gearbox can be connected to both the superstructure system and the driving system, respectively, and can transmit the power from the drive motor to either the superstructure system or the driving system.

[0063] Figure 2 The structural schematic diagram of the power system provided in this application Figure 2 ,exist Figure 1Based on the embodiments shown, such as Figure 2 As shown, the power system 10 includes: a drive motor 101, a gearbox 102, a superstructure system, and a driving system 104. Specifically, the superstructure system includes a first system, a second system, and a third system.

[0064] The drive motor 101 is connected to the gearbox 102. The power take-off port of the gearbox 102 is connected to the first system, the second system, and the third system of the superstructure system to transmit the power transmitted by the drive motor 101 to the first system, the second system, and the third system.

[0065] The gearbox 102 is connected to the driving system 104 via direct drive to transmit the power from the drive motor 101 to the driving system 104.

[0066] For example, the gearbox is used to transmit the power from the drive motor to the first, second, and third systems in the superstructure system for operation, or to transmit the power from the drive motor to the driving system for driving.

[0067] In one example, when the construction machinery is in a driving condition, the power of the drive motor is transmitted to the driving system through the gearbox, and the driving system works to enable the construction machinery to move.

[0068] In another example, when the construction machinery is in superstructure operation mode, the power of the drive motor is transmitted to the superstructure system through the gearbox, and the superstructure system operates to enable the construction machinery to perform superstructure operations. Specifically, the power of the drive motor is transmitted to the first, second, and third systems of the superstructure system through the gearbox, so that the first, second, and third systems perform superstructure operations.

[0069] For example, the first, second, and third systems in the superstructure system can each be responsible for performing superstructure operations of different natures. By transmitting power from the drive motor to these systems, combined operations of different natures required under different working conditions can be achieved.

[0070] In construction machinery, taking concrete pump trucks as an example, the superstructure system can specifically include: a boom system, a pumping system, and an auxiliary drive system. The first system can be any one of the boom system, pumping system, and auxiliary drive system; the second system can be any one of the remaining two systems; and correspondingly, the last remaining system is the third system.

[0071] For example: the first system is the boom system, the second system is the pumping system, and the third system is the auxiliary drive system.

[0072] Alternatively, the first system can be a boom system, the second system an auxiliary drive system, and the third system a pumping system.

[0073] Alternatively, the first system may be a pumping system, the second system a boom system, and the third system an auxiliary drive system.

[0074] Alternatively, the first system may be a pumping system, the second system an auxiliary drive system, and the third system a boom system.

[0075] Alternatively, the first system can be an auxiliary drive system, the second system a boom system, and the third system a pumping system.

[0076] Alternatively, the first system can be an auxiliary drive system, the second system a pumping system, and the third system a boom system.

[0077] Specifically, the gearbox includes a gear set, which contains multiple gears. The gearbox can change the meshing relationship between different gears in the gear set, so as to transmit the power transmitted by the drive motor to the superstructure system for superstructure operation, or to transmit the power transmitted by the drive motor to the driving system for driving.

[0078] For example, when the gear corresponding to the output shaft of the drive motor in the gearbox meshes with the gear corresponding to the drive axle of the driving system, the gearbox transmits the power from the drive motor to the driving system for movement. That is, the construction machinery is in a driving state at this time. When the gear corresponding to the output shaft of the drive motor in the gearbox meshes with the gear corresponding to the gear pump of the superstructure system, the gearbox transmits the power from the drive motor to the superstructure system for superstructure operations.

[0079] The gear pump in the superstructure system can be used to reverse the pump's direction via a drive motor. This gear pump can also be called a fixed-displacement pump. In some embodiments, the superstructure system uses a variable-displacement pump, requiring a valve block to switch its direction. However, this application uses a gear pump, eliminating the need for a valve block and directly using a drive motor to drive the gearbox for forward and reverse switching. This eliminates the need for a valve block and saves space.

[0080] The power system provided in this application embodiment connects to a gearbox via a drive motor, which in turn connects to the first, second, and third systems within the superstructure system. The gearbox also connects to the driving system. The drive motor, as a power source, transmits power to the superstructure system via the gearbox, enabling the power system to perform superstructure operations; or it transmits power to the driving system via the gearbox, enabling the construction machinery equipped with this power system to move. There is no need to separately install a transfer case after the gearbox, as the gearbox can directly switch power between different systems. On the one hand, this shortens the transmission link, reduces energy loss during power transmission, and improves the transmission efficiency of the construction machinery during power switching. On the other hand, eliminating the need for a separate transfer case saves on the overall cost of the construction machinery and conserves space.

[0081] As can be seen from the foregoing embodiments, the gearbox is connected to both the superstructure system and the driving system. Specifically, the gearbox is connected to the first, second, and third systems within the superstructure system. In practical applications, the superstructure system of construction machinery may include multiple systems. This embodiment, based on the foregoing... Figure 2 Based on the illustrated embodiment, the specific structure of the power system when the superstructure system includes multiple systems will be further explained.

[0082] Figure 3 The structural schematic diagram of the power system provided in this application Figure 3 In one example, such as Figure 3 As shown, in Figure 2 Based on the embodiment shown, the gearbox 102 includes a first power take-off port and a second power take-off port.

[0083] The first power take-off port is connected to the first system 1031, and the gearbox 102 transmits the power transmitted by the drive motor 101 to the first system 1031 through the first power take-off port.

[0084] The second power take-off port is connected to the second system 1032 and the third system 1033. The gearbox 102 transmits the power from the drive motor to the second system 1032 and / or the third system 1033 through the second power take-off port.

[0085] For example, the gearbox is used to transmit the power from the drive motor to the first system for operation via a first power take-off port, and / or to transmit the power from the drive motor to the second system and / or the third system for operation via a second power take-off port.

[0086] For example, two power take-off ports (PTOs) are provided on the gearbox, with the first PTO connected to the first system and the second PTO connected to the second system; further, the second system is connected to the third system.

[0087] In one example, when the construction machinery is in a driving condition, the power of the drive motor is transmitted to the driving system through the gearbox, and the driving system operates to enable the construction machinery to move. The gearbox includes a Transmission Control Unit (TCU). When the TCU receives a driving command from the Vehicle Control Unit (VCU), the TCU controls the gearbox to transmit the power of the drive motor to the driving system through the gearbox output shaft.

[0088] Based on practical application examples, construction machinery operating in its superstructure mode can be further categorized. Taking concrete pump trucks as an example, superstructure operating modes can include boom operation mode, pumping operation mode, and mixed operation mode.

[0089] As can be seen from the foregoing examples, in construction machinery such as concrete pump trucks, the first system, the second system, and the third system can be different systems in the superstructure system, namely the boom system, the pumping system, and the auxiliary drive system.

[0090] In one example, Figure 4 The structural schematic diagram of the power system provided in this application Figure 4 .like Figure 4 As shown, the first system is the boom system, the second system is the pumping system, and the third system is the auxiliary drive system.

[0091] When the construction machinery is in boom operation mode, the gearbox transmits the power of the drive motor to the boom system through the first power take-off port. Based on the received power, the boom system controls the boom movement of the construction machinery to bring the boom to the designated position. Specifically, when the TCU receives a boom operation command from the superstructure controller, the TCU controls the gearbox to transmit the power of the drive motor to the boom system through the gearbox's first power take-off port.

[0092] When the construction machinery is in pumping operation mode, the gearbox transmits the power of the drive motor to the pumping system and auxiliary drive system through the second power take-off port. Based on the received power, the pumping system and auxiliary drive system control the auxiliary drive system to perform auxiliary drive operations and control the pumping system to perform pumping, enabling the construction machinery to complete the concrete conveying operation and the auxiliary drive operation. Specifically, when the TCU receives the pumping operation command sent by the superstructure controller, the TCU controls the gearbox to transmit the power of the drive motor to the pumping system and auxiliary drive system through the gearbox's second power take-off port.

[0093] Specifically, the second power take-off port is connected to the pumping system, which in turn is connected to the auxiliary drive system. The second power take-off port transmits power from the drive motor to the pumping system, which then further transmits the power to the auxiliary drive system, enabling both systems to operate.

[0094] When the construction machinery is in a mixed operation condition, the gearbox transmits the power of the drive motor to the boom system through the first power take-off (PTO), and to the pumping system and auxiliary drive system through the second PTO. At this time, the boom system, pumping system, and auxiliary drive system, based on the received power, control the boom movement, control the auxiliary drive system to mix materials, and control the pumping system to pump. Specifically, when the TCU receives a mixed operation command from the superstructure controller, the TCU controls the gearbox to transmit the power of the drive motor to the boom system through the first PTO, and to the pumping system and auxiliary drive system through the second PTO.

[0095] In one example, Figure 5 The structural schematic diagram of the power system provided in this application Figure 5 .like Figure 5 As shown, the first system is the boom system, the second system is the auxiliary drive system, and the third system is the pumping system.

[0096] This example is similar to the one described above. Figure 4 The difference in the example shown is that when the gearbox transmits the power of the drive motor to the auxiliary drive system and the pumping system through the second power take-off port, the power of the drive motor is transmitted to the auxiliary drive system through the second power take-off port, and the auxiliary drive system continues to transmit the power to the pumping system.

[0097] When the construction machinery is in boom operation mode, the gearbox transmits power to the boom system through the first power take-off port to enable the boom system to operate.

[0098] When the construction machinery is in pumping operation mode, the gearbox transmits power to the auxiliary drive system and the pumping system through the second power take-off port to enable the auxiliary drive system and the pumping system to operate.

[0099] When the construction machinery is in a mixed operation condition, the gearbox transmits power to the boom system through the first power take-off port to enable the boom system to operate, and the gearbox transmits power to the auxiliary drive system and the pumping system through the second power take-off port to enable the auxiliary drive system and the pumping system to operate.

[0100] In one example, Figure 6 The structural schematic diagram of the power system provided in this application Figure 6 .like Figure 6 As shown, the first system is the pumping system, the second system is the boom system, and the third system is the auxiliary drive system.

[0101] When the construction machinery is in the first mixed operation condition, the gearbox transmits power to the pumping system through the first power take-off port to enable the pumping system to operate, and the gearbox transmits power to the boom system through the second power take-off port, and the boom system then transmits power to the auxiliary drive system to enable the boom system and the auxiliary drive system to operate.

[0102] Optionally, when the construction machinery is in the second mixed operating condition, the gearbox transmits power to the boom system through the second power take-off port, and the boom system then transmits power to the auxiliary drive system, enabling both the boom system and the auxiliary drive system to operate. This allows for material waiting operations to be performed simultaneously with the boom working.

[0103] In one example, Figure 7 The structural schematic diagram of the power system provided in this application Figure 7 .like Figure 7 As shown, the first system is a pumping system, the second system is an auxiliary drive system, and the third system is a boom system.

[0104] This example is similar to the one described above. Figure 6The difference in the example shown is that when the gearbox transmits the power of the drive motor to the auxiliary drive system and the boom system through the second power take-off port, the power of the drive motor is transmitted to the auxiliary drive system through the second power take-off port, and the auxiliary drive system continues to transmit the power to the boom system.

[0105] In one example, Figure 8 The structural schematic diagram of the power system provided in this application Figure 8 .like Figure 8 As shown, the first system is the auxiliary drive system, the second system is the boom system, and the third system is the pumping system.

[0106] When the construction machinery is in a mixed operation condition, the gearbox transmits power to the auxiliary drive system through the first power take-off port to enable the auxiliary drive system to operate, and the gearbox transmits power to the boom system through the second power take-off port, and the boom system then transmits power to the pumping system to enable the pumping system and boom system to operate.

[0107] When the construction machinery is in a waiting-for-materials operation, the gearbox transmits power to the auxiliary drive system through the first power take-off port so that the auxiliary drive system can perform operations.

[0108] In one example, Figure 9 The structural schematic diagram of the power system provided in this application Figure 9 .like Figure 9 As shown, the first system is the auxiliary drive system, the second system is the pumping system, and the third system is the boom system.

[0109] When the construction machinery is in a mixed operation condition, the gearbox transmits power to the auxiliary drive system through the first power take-off port to enable the auxiliary drive system to operate, and the gearbox transmits power to the pumping system through the second power take-off port, and the pumping system then transmits power to the boom system to enable the pumping system and boom system to operate.

[0110] When the construction machinery is in a waiting-for-materials operation, the gearbox transmits power to the auxiliary drive system through the first power take-off port so that the auxiliary drive system can perform operations.

[0111] In the above embodiments, by setting multiple power take-off ports on the gearbox and connecting different power take-off ports to different superstructure systems, it is possible to further decouple the power switching between the superstructure system and the driving system, and even more importantly, to decouple the power switching between the various systems within the superstructure system. This eliminates the need for a transfer case after the gearbox, thus supporting various superstructure operating conditions and improving the transmission efficiency of the construction machinery.

[0112] In one example, the gear of the first power take-off port of the gearbox is connected to the gear of the first system so that the power transmitted by the drive motor is transmitted to the first system through the first power take-off port.

[0113] For example, a gear is provided at the first power take-off port of the gearbox, and a gear pump is provided in the first system, with a corresponding gear provided on the gear pump of the first system. When the gear at the first power take-off port of the gearbox meshes with the gear of the gear pump of the first system, the gearbox can transmit the power transmitted by the drive motor to the first system through the first power take-off port, so that the first system can perform operations.

[0114] In one example, the gear of the second power take-off port of the gearbox is connected to the gear of the second system to transmit the power transmitted by the drive motor to the second system and / or the third system through the second power take-off port.

[0115] For example, the second power take-off port of the gearbox is equipped with a gear, and a gear pump is provided in the second system, with a corresponding gear provided in the gear pump of the second system. When the gear of the second power take-off port of the gearbox meshes with the gear of the gear pump of the second system, the gearbox can transmit the power transmitted by the drive motor to the second system through the second power take-off port, and then transmit the power to the third system, so that the second system and the third system can perform operations.

[0116] It should be noted that, in the case of a concrete pump truck, the first system mentioned above can be any one of the boom system, pumping system, and auxiliary drive system; the second system can be any one of the remaining two systems; and correspondingly, the last remaining system is the third system. The specific combination method can be referred to the explanation in the previous example, and will not be elaborated here.

[0117] In the example above, the gearbox can transmit power from the drive motor to the first system by controlling the gear of the first power take-off port to mesh with the gear of the first system; and by controlling the gear of the second power take-off port to mesh with the gear of the second system, it can transmit power from the drive motor to both the second and third systems. Directly controlling the gear meshing of the gearbox allows for switching or combining power transmission paths, improving transmission efficiency and reducing the space occupied and cost of the powertrain.

[0118] In one example, the second power take-off port is connected to the second system, and the second system is connected to the third system.

[0119] For example, the second power take-off port of the gearbox is connected to the gear pump of the second system, and the gearbox can transmit the power transmitted by the drive motor to the second system through the second power take-off port.

[0120] Furthermore, the gear pump of the second system is connected to the gear pump of the third system. The gearbox can transmit the power from the drive motor to the gear pump of the second system through the second power take-off port. Then, through the connection between the gear pump of the second system and the gear pump of the third system, the power transmitted to the second system can be further transmitted to the gear pump of the third system. The gear pumps of the second and third systems operate based on the received power.

[0121] It should be noted that, in the case of a concrete pump truck, the first system mentioned above can be any one of the boom system, pumping system, and auxiliary drive system; the second system can be any one of the remaining two systems; and correspondingly, the last remaining system is the third system. The specific combination method can be referred to the explanation in the previous example, and will not be elaborated here.

[0122] In the example above, by connecting the second and third systems, multiple superstructure systems can be controlled through a single power take-off port, further saving space and simplifying the structure of the gearbox.

[0123] In one example, in a concrete pump truck, the first system is the auxiliary drive system, the second system is the pumping system, and the third system is the boom system.

[0124] Combining the aforementioned examples and Figure 9 To explain, the first system is an auxiliary drive system. The first power take-off port of the gearbox is equipped with a gear, and the auxiliary drive system is equipped with a gear pump. When the gear of the first power take-off port of the gearbox meshes with the gear of the gear pump of the auxiliary drive system, the gearbox can transmit the power transmitted by the drive motor to the auxiliary drive system through the first power take-off port, so that the auxiliary drive system can perform its operation.

[0125] The gearbox has a second power take-off port equipped with a gear, and the pumping system has a gear pump, which in turn has a corresponding gear. When the gear at the gearbox's second power take-off port meshes with the gear pump in the pumping system, the gearbox can transmit the power from the drive motor to the pumping system through the second power take-off port. Furthermore, the boom system has a gear pump, and the pumping system gear pump is connected in series with the boom system gear pump. Therefore, the gearbox can transmit the power from the drive motor to the pumping system gear pump through the second power take-off port; and through the connection between the pumping system gear pump and the boom system gear pump, the power transmitted to the pumping system can be further transmitted to the boom system gear pump, enabling the pumping system and boom system to operate.

[0126] It should be noted that the above example is only for illustrative purposes, illustrating the structure of the gearbox during its connection with the second and third systems via the second power take-off port. The first, second, and third systems can also be any combination of a boom system, a pumping system, and an auxiliary drive system.

[0127] For example: 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 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 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 boom system, and the third system is a pumping system.

[0128] In the example above, by connecting the gear pumps corresponding to the second and third systems, the gearbox can transmit the power of the drive motor to the gear pump of the second system through the second power take-off port; and then the gear pump of the second system transmits the power to the gear pump of the third system. This enables power transmission, allowing two systems to be driven through a single power take-off port, reducing the space occupied and cost of the power system.

[0129] Figure 10 The structural schematic diagram of the power system provided in this application Figure 10 In one example, such as Figure 10 As shown, in Figure 2 Based on the embodiment shown, the gearbox 102 includes a first power take-off port, a second power take-off port, and a third power take-off port.

[0130] The first power take-off port is connected to the first system 1031, the second power take-off port is connected to the second system 1032, and the third power take-off port is connected to the third system 1033.

[0131] The gearbox 102 is used to transmit the power transmitted by the drive motor 101 to the first system 1031 for operation through the first power take-off port, and / or to transmit the power transmitted by the drive motor 101 to the second system 1032 for operation through the second power take-off port, and / or to transmit the power transmitted by the drive motor 101 to the third system 1033 for operation through the third power take-off port.

[0132] For example, three power take-off ports (PTOs) are provided on the gearbox, with the first PTO connected to the first system, the second PTO connected to the second system, and the third PTO connected to the third system.

[0133] In one example, the transmission includes a transmission controller (TCU). When the TCU receives a driving command from the vehicle controller (VCU), the TCU controls the transmission to transmit the power of the drive motor to the driving system through the transmission output shaft; it can be understood that the construction machinery is in driving condition at this time.

[0134] In construction machinery, taking concrete pump trucks as an example, the superstructure system can specifically include: a boom system, a pumping system, and an auxiliary drive system. The first system can be any one of the boom system, pumping system, and auxiliary drive system; the second system can be any one of the remaining two systems; and correspondingly, the last remaining system is the third system.

[0135] For example, in construction machinery such as concrete pump trucks, the first system is the boom system, the second system is the pumping system, and the third system is the auxiliary drive system.

[0136] When the TCU receives the boom operation command sent by the superstructure controller, the TCU controls the gearbox to transmit the power of the drive motor to the boom system through the first power take-off port of the gearbox; it can be understood that the construction machinery is in boom operation mode at this time.

[0137] When the TCU receives the pumping operation command sent by the superstructure controller, the TCU controls the gearbox to transmit the power of the drive motor to the pumping system through the second power take-off port of the gearbox and to the auxiliary drive system through the third power take-off port of the gearbox. It can be understood that at this time, the construction machinery is in pumping operation mode, the pumping system performs pumping operation based on the obtained power, and the auxiliary drive system performs auxiliary drive operation based on the obtained power.

[0138] When the TCU receives a material waiting operation command from the superstructure controller, the TCU controls the gearbox to transmit the power of the drive motor to the auxiliary drive system through the gearbox's third power take-off port. This means the construction machinery is in a material waiting state, and the auxiliary drive system performs auxiliary drive operations based on the received power. It should be noted that when the construction machinery is in pumping mode, the auxiliary drive system performs auxiliary drive operations simultaneously with the pumping system; however, when the construction machinery is in a material waiting state, the auxiliary drive system performs auxiliary drive operations, and the pumping system does not operate, meaning the drive motor's power is not transmitted to the pumping system through the gearbox's second power take-off port.

[0139] When the TCU receives a mixed operation command from the superstructure controller, the TCU controls the gearbox to transmit the power of the drive motor to the boom system through the first power take-off port, to the pumping system through the second power take-off port, and to the auxiliary drive system through the third power take-off port. In other words, the construction machinery is in a mixed operation mode at this time, with the boom system performing boom operations, the pumping system performing pumping operations, and the auxiliary drive system performing auxiliary drive operations.

[0140] It should be noted that, in construction machinery taking concrete pump trucks as an example, the aforementioned first system, second system, and third system can be other combinations. For example: 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 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 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 boom system, and the third system is a pumping 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.

[0141] When the construction machinery is in boom operation mode, the gearbox transmits power to the boom system through the power take-off port connected to the boom system.

[0142] When the construction machinery is in pumping operation mode, the gearbox transmits power to the pumping system through the power take-off port connected to the pumping system; and the gearbox transmits power to the auxiliary drive system through the power take-off port connected to the auxiliary drive system.

[0143] When the construction machinery is in mixed operation conditions, the gearbox transmits power to the boom system through the power take-off port connected to the boom system; the gearbox also transmits power to the pumping system through the power take-off port connected to the pumping system; and the gearbox transmits power to the auxiliary drive system through the power take-off port connected to the auxiliary drive system.

[0144] When the construction machinery is in a waiting-for-materials operation, the gearbox transmits power to the auxiliary drive system through the power take-off port connected to the auxiliary drive system.

[0145] In the above embodiments, by setting three power take-off ports on the gearbox, each power take-off port being connected to three systems in the superstructure system, the power switching decoupling among the first, second, and third systems can be further realized. This enables the differentiation of various operating conditions, such as pumping conditions and waiting-for-material conditions.

[0146] As can be seen from the foregoing embodiments, the gearbox is connected to the drive motor, which, as a power source, requires power supply. This embodiment further explains, based on the foregoing embodiments, how to supply power to the drive motor, and the specific structure of the power system to achieve this.

[0147] Figure 11 The structural schematic diagram of the power system provided in this application Figure 10 1. In one example, such as Figure 11 As shown, the power system 10 also includes an all-in-one module 105, and the drive motor 101 is connected to the all-in-one module 105.

[0148] The multi-function module 105 controls the operation of the drive motor 101.

[0149] For example, the all-in-one module is electrically connected to the drive motor via wires. Optionally, the drive motor can be electrically connected to the all-in-one module via a bus or three-phase wires, and the all-in-one module transmits three-phase power to the drive motor via the three-phase wires to enable the drive motor to operate.

[0150] Specifically, the all-in-one module can receive instructions from the vehicle control unit (VCU) or the superstructure controller. In response to these instructions, the all-in-one module can generate a voltage signal and send it to the drive motor connected to the all-in-one module to activate the drive motor. The instructions can indicate the operating status of the drive motor.

[0151] The operating states of the drive motor include, but are not limited to: drive motor start and stop, drive motor speed, drive motor torque, drive motor power, and drive motor forward and reverse rotation.

[0152] Based on the foregoing example, the all-in-one module can receive driving commands or superstructure commands. These superstructure commands include: boom operation commands, pumping operation commands, mixed operation commands, and material waiting operation commands. When the all-in-one module receives a driving command or superstructure command, it controls the drive motor to operate, and the gearbox selects the power transmission path for the drive motor based on the received command.

[0153] For example, when the construction machinery is in motion, the all-in-one module responds to the driving command from the vehicle controller (VCU) and controls the drive motor to operate. The driving command specifies the torque of the drive motor. Therefore, the all-in-one module generates a voltage signal based on the driving command and sends it to the drive motor, causing the drive motor to operate at the torque indicated by the driving command.

[0154] For example, when the construction machinery is in the superstructure working condition, the all-in-one module responds to the superstructure controller's superstructure command and controls the drive motor to operate. The superstructure command indicates the drive motor's rotational speed. Therefore, the all-in-one module generates a voltage signal based on the superstructure command and sends it to the drive motor, causing the drive motor to operate at the rotational speed indicated by the superstructure command.

[0155] In the example above, the all-in-one module can control the operation of the drive motor, thereby enabling the various systems in the overall power system to operate under different working conditions.

[0156] Figure 12 The structural schematic diagram of the power system provided in this application Figure 10 2. In one example, such as Figure 12 As shown, in Figure 11Based on the embodiment shown, the power system 10 also includes a high-pressure box 106.

[0157] The high-voltage box 106 is connected to the multi-function module 105. The high-voltage box 106 controls the multi-function module 105 to supply power to the drive motor 101.

[0158] For example, the high-voltage box can be a high-voltage power distribution unit (PDU), which is used to control the power supply of the all-in-one module to the drive motor.

[0159] For example, the high-voltage box is connected to at least one power source, and the high-voltage box contains multiple relay switches, each corresponding to a power source. The high-voltage box controls whether the power source supplies power to the drive motor through the multi-function module by changing the on / off state of the relay switches.

[0160] It is understood that the first power source is connected to the multi-function module through the first relay switch in the high-voltage box. When the first relay switch is in the on state, the first power source can supply power to the drive motor through the multi-function module; correspondingly, when the first relay switch is in the off state, the first power source cannot supply power to the drive motor through the multi-function module.

[0161] Optionally, other power sources can also be configured. Based on the on / off state of multiple relay switches, one or more power sources can be controlled to supply power to the drive motor through the multi-in-one module.

[0162] Optionally, the high-voltage box is equipped with a fuse to stop supplying power to the abnormal power source in case of an abnormal power supply. Specifically, abnormal power supply situations may include: temperature exceeding a preset temperature or current exceeding the maximum current.

[0163] It should be noted that, in the embodiments of this application, "high voltage" in the high-voltage box refers to the voltage value of the power supply source. Specifically, in the embodiments of this application, "high voltage" in the high-voltage box refers to a power supply source with a voltage value in the range of 400V to 750V. It can be understood that a device that controls the power supply status of a power supply source with a voltage value in the range of 400V to 750V can be called a high-voltage box.

[0164] In the above example, by setting up a high-voltage box, the power supply status of the drive motor can be controlled. The power supply status indicates whether at least one power source connected to the high-voltage box is supplying power to the drive motor through the multi-function module. Controlling the multi-function module to supply power to the drive motor based on the high-voltage box enables the drive motor to operate based on the received electrical energy. Furthermore, the safety of the drive motor's power supply side can be improved by utilizing the fuses in the high-voltage box.

[0165] Figure 13 The structural schematic diagram of the power system provided in this application Figure 10 3. In one example, such as Figure 13 As shown, in Figure 12 Based on the embodiment shown, the power system 10 also includes a battery 107.

[0166] The battery 107 is connected to the high-voltage box 106 to provide power to the drive motor 101 through the high-voltage box 106 and the multi-function module 105.

[0167] For example, the battery is used to store and supply electrical energy. A high-voltage box allows control over whether the battery's electrical energy is transmitted to the drive motor via the all-in-one module.

[0168] In the example above, by setting up a battery to store electrical energy, the power required to drive the motor can be provided.

[0169] Figure 14 The structural schematic diagram of the power system provided in this application Figure 10 IV. In one example, such as Figure 14 As shown, in Figure 13 Based on the embodiment shown, the power system 10 also includes a range extender 108.

[0170] The range extender 108 is connected to the high-voltage box 106 to provide power to the drive motor 101 through the high-voltage box 106 and the multi-function module 105.

[0171] For example, the range extender supplies power to the drive motor via a high-voltage box and an all-in-one module. The high-voltage box controls whether the range extender's power is transmitted to the drive motor through the all-in-one module. When the drive motor's power is insufficient, the high-voltage box controls an internal relay switch connected to the range extender to conduct, allowing the range extender to supply power to the drive motor through the all-in-one module, thereby ensuring the drive motor's output power.

[0172] Optionally, the range extender can also be connected to the battery to increase its range.

[0173] Optionally, the range extender may include an engine, a generator set, and a range extender controller. The range extender controller is connected to the engine, and the engine is connected to the generator set. In response to a range extender command, the range extender controller controls the engine to drive the generator set to generate electricity, and transmits the electrical energy generated by the generator set to the drive motor through a high-voltage box and an all-in-one module; or it transmits the electrical energy generated by the generator set to the battery through a high-voltage box.

[0174] The range-extending command can be issued by either the vehicle control unit (VCU) or the superstructure controller. When the construction machinery is in driving mode, the VCU detects the drive power of the drive motor and the battery power. If it determines that the drive power of the drive motor is greater than the battery power, the VCU sends a range-extending command to the range extender controller. Alternatively, when the construction machinery is in superstructure mode, the superstructure controller detects the drive power of the drive motor and the battery power. If it determines that the drive power of the drive motor is greater than the battery power, the superstructure controller sends a range-extending command to the range extender controller.

[0175] Optionally, the range extender command is used to indicate the target engine speed. By controlling the engine speed to the target speed in the range extender command through the range extender controller, the generator set can be kept operating in the high-efficiency power generation zone. The high-efficiency power generation zone refers to the generator set operating with a mechanical energy-to-electrical energy conversion efficiency greater than 75%.

[0176] It should be noted that, Figure 14 Is Figure 13 The illustrated embodiment includes an added range extender. It can be understood that... Figure 12 Based on the illustrated embodiment, a range extender is added separately. The range extender is directly connected to the high-voltage box.

[0177] Combining the two examples above, the high-voltage box is connected to both the battery and the range extender. The high-voltage box can control whether the battery supplies power to the drive motor through the multi-function module; it can also control whether the range extender supplies power to the drive motor through the multi-function module. It can be understood that the power sources mentioned in the aforementioned examples are the battery and / or the range extender.

[0178] In the above embodiments, the power system includes an all-in-one module that controls the operation of the drive motor; a high-voltage box, battery, and range extender are also included to supply power to the drive motor via the all-in-one module. Furthermore, when the drive motor's power is insufficient, the range extender's generator set can be activated to supply power to the drive motor, supplementing its input power. This achieves a complete power supply to the drive motor of the power system, and the range extender can supplement the drive motor's input power, improving the drive motor's power performance while optimizing battery energy utilization.

[0179] Furthermore, Figure 15 The structural schematic diagram of the power system provided in this application Figure 10 5. In one example, such as Figure 15 As shown, in Figure 14Based on the embodiment shown, the high-voltage box 106 is provided with a charging port for connecting to an external power source 109; the charging port is used to transmit electrical energy from the external power source 109 to the high-voltage box 106.

[0180] For example, the high-voltage box is used to output electrical energy from an external power source to the all-in-one module. By controlling the on / off state of the relay switch corresponding to the charging port in the high-voltage box, the system controls whether the external power source can supply power to the drive motor through the all-in-one module.

[0181] For example, a charging port is also provided on the high-voltage box, which can be used to connect an external power source.

[0182] External power sources include: portable external power supplies, and / or, mains power.

[0183] Optionally, an external power source can also charge the battery.

[0184] It should be noted that the power system may also include only the high-voltage box and the multi-functional module. A charging port can also be provided on the high-voltage box, which connects to an external power source.

[0185] In the above embodiments, by providing a charging port on the high-voltage box, an external power source can be connected to the power system in addition to the battery. This external power source can charge the battery and also directly supply power to the drive motor. This increases the richness of the power system's power input side, and because of the introduction of the external power source, when the battery power is insufficient to meet the drive motor's driving power requirements, the external power source can directly supply power to the drive motor, improving the drive motor's operational stability and thus enhancing the overall reliability of the power system.

[0186] The power system provided in this application embodiment connects the drive motor directly to the gearbox, and the gearbox is connected to the first, second, and third systems of the superstructure system via a power take-off port. The transmission output shaft connects to the driving system. The gearbox can transmit the power of the drive motor to the superstructure system via the power take-off port, or to the driving system via the gearbox output shaft. In summary, the power system provided in this application embodiment can directly achieve power decoupling and power switching between the superstructure system and the driving system through the gearbox, eliminating the need for a transfer case, shortening the transmission link, and thus improving the transmission efficiency of the construction machinery during power switching between the superstructure and the driving system.

[0187] This application also provides a construction machinery that is equipped with a power system as provided in any of the foregoing embodiments.

[0188] For example, construction machinery can be mechanical equipment that has both driving and superstructure working conditions in engineering projects.

[0189] For example, construction machinery can be pump trucks (or concrete pump trucks), wet spraying machines, fire trucks, and so on.

[0190] The construction machinery exemplified above can all have both driving and superstructure operation modes. It should be understood that the construction machinery provided in this embodiment is equipped with a power system as described in the preceding embodiments. This power system enables power decoupling between driving and superstructure operation. This embodiment does not limit the specific model or type of construction machinery.

[0191] In the above embodiments, the construction machinery is based on the power system provided in the foregoing embodiments, which enables power decoupling between driving and superstructure operation. The specific implementation process and corresponding technical effects of the power system can be found in the explanation of the foregoing embodiments, and will not be elaborated here.

[0192] This application also provides a control method for a power system, which is applied to a controller in engineering machinery. The method includes:

[0193] Control commands are sent to the drive motor in the construction machinery so that the gearbox can transmit the power from the drive motor to the superstructure system for superstructure operations, or so that the gearbox can transmit the power from the drive motor to the driving system for driving.

[0194] The drive motor is the drive motor in the power system provided in the aforementioned embodiments.

[0195] For example, the construction machinery provided in the foregoing embodiments may further include a controller. The controller sends control commands to the drive motor, which indicate the current operating condition of the construction machinery. When the control command indicates that the construction machinery is in a superstructure operation condition, the controller controls the gearbox to transmit the power from the drive motor to the superstructure system for superstructure operation; when the control command indicates that the construction machinery is in a driving condition, the controller controls the gearbox to transmit the power from the drive motor to the driving system for driving.

[0196] Optionally, the controller can also send control commands to the all-in-one module, which responds to the control commands by controlling the start of the drive motor.

[0197] Optionally, the transmission may include a transmission controller, which may also send control commands to the transmission controller to transmit power to the superstructure system or the driving system; the superstructure system may include a first system, a second system, and a third system.

[0198] The power system control method provided in the above embodiments is applied to the controller in the engineering machinery provided in the foregoing embodiments to control the drive motor of the power system provided in the foregoing embodiments. Its specific implementation process and technical effects are similar to those in the foregoing embodiments, and will not be elaborated here.

[0199] Other embodiments of this application will readily occur to those skilled in the art upon consideration of the specification and practice of the utility models disclosed herein. This application is intended to cover any variations, uses, or adaptations of this application that follow the general principles of this application and include common knowledge or customary techniques in the art not disclosed herein. The specification and examples are to be considered exemplary only, and the true scope and spirit of this application are indicated by the following claims.

[0200] It should be understood that this application is not limited to the precise structure described above and shown in the accompanying drawings, and various modifications and changes can be made without departing from its scope. The scope of this application is limited only by the appended claims.

Claims

1. A power system, characterized in that, include: The system includes a drive motor, a gearbox, a superstructure system, and a driving system; the superstructure system includes a first system, a second system, and a third system. The drive motor is connected to the gearbox; the power take-off port of the gearbox is connected to the first system, the second system and the third system of the superstructure system, so as to transmit the power transmitted by the drive motor to the first system, the second system and the third system. The gearbox is connected to the driving system via a direct drive to transmit the power from the drive motor to the driving system.

2. The power system according to claim 1, characterized in that, The gearbox includes a first power take-off port and a second power take-off port; The first power take-off port is connected to the first system, and the gearbox transmits the power from the drive motor to the first system through the first power take-off port; the second power take-off port is connected to the second system and the third system, and the gearbox transmits the power from the drive motor to the second system and / or the third system through the second power take-off port.

3. The power system according to claim 2, characterized in that, The gear at the first power take-off port of the gearbox is connected to the gear of the first system so that the power transmitted by the drive motor is transmitted to the first system through the first power take-off port; The gear of the second power take-off port of the gearbox is connected to the gear of the second system so that the power transmitted by the drive motor can be transmitted to the second system and / or the third system through the second power take-off port.

4. The power system according to claim 2, characterized in that, The second power take-off port is connected to the second system, and the second system is connected to the third system.

5. The power system according to claim 4, characterized in that, The first system is an auxiliary drive system, the second system is a pumping system, and the third system is a boom system; Alternatively, the first system may be a pumping system, the second system may be an auxiliary drive system, and the third system may be a boom system; Alternatively, the first system may be a pumping system, the second system a boom system, and the third system an auxiliary drive system; Alternatively, the first system may be a boom system, the second system a pumping system, and the third system an auxiliary drive system; Alternatively, the first system may be a boom system, the second system may be an auxiliary drive system, and the third system may be a pumping system; Alternatively, the first system may be an auxiliary drive system, the second system a boom system, and the third system a pumping system.

6. The power system according to claim 1, characterized in that, The gearbox includes a first power take-off port, a second power take-off port, and a third power take-off port; The first power take-off port is connected to the first system, and the first power take-off port transmits the power transmitted by the drive motor to the first system; the second power take-off port is connected to the second system, and the second power take-off port transmits the power transmitted by the drive motor to the second system; the third power take-off port is connected to the third system, and the third power take-off port transmits the power transmitted by the drive motor to the third system.

7. The power system according to claim 1, characterized in that, The power system also includes an all-in-one module, the drive motor is connected to the all-in-one module, and the all-in-one module controls the operation of the drive motor.

8. The power system according to claim 7, characterized in that, The power system also includes a high-voltage box; the high-voltage box is connected to the multi-function module, and the high-voltage box controls the multi-function module to supply power to the drive motor.

9. The power system according to claim 8, characterized in that, The power system also includes a battery; the battery is connected to the high-voltage box to provide electrical energy to the drive motor through the high-voltage box and the all-in-one module.

10. The power system according to claim 8, characterized in that, The power system also includes a range extender; the range extender is connected to the high-voltage box to provide electrical energy to the drive motor through the high-voltage box and the all-in-one module.

11. The power system according to claim 8, characterized in that, The high-voltage box is equipped with a charging port for connecting to an external power source; the charging port is used to transmit electrical energy from the external power source to the high-voltage box.

12. An engineering machinery, characterized in that, The engineering machinery is equipped with a power system as described in any one of claims 1-11.

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