Hybrid operation machine hydraulic control system, control system assembly and operation machine

Abstract

The invention relates to the technical field of operation machinery, and discloses a hybrid operation machinery hydraulic control system, a control system assembly and operation machinery. The hydraulic control system for the hybrid operation machinery comprises a complete machine controller, a hybrid power subsystem, a working hydraulic subsystem and a steering hydraulic subsystem, the working hydraulic subsystem and the steering hydraulic subsystem respectively comprise an electric control working pump and an electric control steering pump which are both controlled by the complete machine controller, and the complete machine controller can dynamically and accurately control the displacement of the electric control working pump and the displacement of the electric control steering pump according to the real-time working condition of the hybrid operation machine, so that waste is avoided; a priority valve is integrated in the flow amplification valve, when the working hydraulic subsystem is in a high load state, pilot oil fed back by the working execution oil cylinder set drives the priority valve to be opened to supply oil to the confluence pipeline, and the electric control steering pump automatically supplements part or all of the surplus flow of steering into a working oil way through the confluence pipeline. The flow requirement of the composite action is met, and the controllability is greatly improved.

Description

Technical Field

[0001] The present application belongs to the technical field of operating machinery, and specifically relates to a hybrid operating machinery hydraulic control system, a control system assembly, and an operating machinery. Background Art

[0002] With increasingly stringent environmental protection requirements, the development trend of new energy working machinery is becoming increasingly evident. In the field of medium and large-sized loaders, hybrid technology has been widely used to save energy. Hybrid loaders combine the advantages of internal combustion engines and electric motors, ensuring sufficient power output while reducing fuel consumption and emissions to a certain extent. In terms of energy conservation, in addition to reducing fuel consumption, energy conservation through hydraulic systems is also a major measure.

[0003] Traditional hybrid loaders generally use fixed-displacement systems and variable-displacement systems. The fixed-displacement system uses a combination of a fixed-displacement pump and a variable-displacement pump. However, during actual operation, the dual pumps still output at full displacement, which is inherently energy-saving and generally cannot achieve compound actions, greatly reducing controllability. Summary of the Invention

[0004] The purpose of this application is to provide a hybrid working machine hydraulic control system, a control system assembly and a working machine, which are used to solve the problems that traditional hybrid working machines use fixed variable systems and variable systems, have poor energy saving effects, cannot achieve compound actions, and have poor controllability.

[0005] In order to achieve the above-mentioned objectives, the present application provides, in a first aspect, a hybrid working machine hydraulic control system, which is applied to a hybrid working machine. The hybrid working machine hydraulic control system includes: Machine controller; A hybrid power subsystem includes an engine and a generator, wherein the generator is connected to the engine for providing electrical energy, and the engine's electronic control terminal is connected to the whole machine controller for electrical signal; A working hydraulic subsystem, comprising an electronically controlled working pump, an electronically controlled main valve, and a working execution cylinder group connected in sequence to a working oil circuit, wherein the driving end of the electronically controlled working pump is drivingly connected to the output shaft of the generator, and the control end of the electronically controlled working pump and the electronically controlled main valve are both electrically connected to the whole machine controller; and A steering hydraulic subsystem includes an electronically controlled steering pump, a flow amplification valve, a steering gear, and a steering actuator cylinder connected in sequence to the steering oil circuit. The driving end of the electronically controlled steering pump is drivingly connected to the output shaft of the generator. The control end of the electronically controlled steering pump and the steering gear are both electrically connected to the whole machine controller. Among them, the flow amplification valve has a built-in priority valve and is connected to the electronically controlled main valve through a converging pipeline. When the working hydraulic subsystem is under high load, the pilot oil fed back by the working execution cylinder group drives the priority valve to open and supply oil to the converging pipeline.

[0006] As a further improvement of the above technical solution: In a possible embodiment, the hybrid working machine hydraulic control system further includes an electronically controlled operating handle, and the electronically controlled operating handle is electrically connected to the whole machine controller; The whole machine controller is configured as follows: A toggle angle signal of the electronically controlled operating handle is obtained, and the speed of the engine is controlled according to the toggle angle signal, wherein the speed of the engine is directly proportional to the toggle angle of the electronically controlled operating handle.

[0007] In a possible implementation, when the toggle angle of the electronically controlled operating handle is switched to the maximum, the whole machine controller controls the engine speed to increase to a low-power rated speed state preset by the system.

[0008] In one possible embodiment, the electronically controlled working pump is an electronically controlled variable piston pump, and the whole machine controller is used to apply a first current signal to the electronically controlled working pump according to the dial angle signal to perform stepless regulation of the pump displacement, wherein the adjustment range of the control current of the first current signal is 280-750mA.

[0009] In a possible embodiment, the oil inlet and / or oil return of the electrically controlled main valve are both controlled by an electric proportional valve core; And / or, the work execution cylinder group includes a boom cylinder and a bucket cylinder.

[0010] In a possible implementation manner, the steering gear is provided with an angle sensor electrically connected to the whole machine controller, and the angle sensor is used to detect a rotation angle signal of the steering gear; The whole machine controller is configured as follows: The rotation angle signal is acquired and the electronically controlled steering pump is controlled to output a preset flow rate according to the rotation angle signal.

[0011] In a possible implementation, the whole machine controller is configured to apply a second current signal to the electronically controlled steering pump according to the rotation angle signal to perform stepless regulation of the pump displacement; The adjustment range of the control current of the second current signal is 200-750 mA.

[0012] In a possible implementation, the electronically controlled steering pump is an electronically controlled variable displacement piston pump; Wherein, when the steering hydraulic subsystem performs steering operation, the electronically controlled steering pump independently supplies oil.

[0013] A second aspect of the present application further provides a control system assembly, which is applied to a hybrid working machine. The control system assembly includes the hybrid working machine hydraulic control system provided according to the first aspect.

[0014] The third aspect of the present application further provides a working machine, comprising the hybrid working machine hydraulic control system provided according to the first aspect or the control system assembly provided according to the second aspect.

[0015] Compared to the prior art, the hybrid working machine hydraulic control system, control system assembly, and working machine provided by this application have at least the following beneficial effects: The hybrid working machine hydraulic control system provided by the present application comprises a working hydraulic subsystem and a steering hydraulic subsystem, each comprising an electronically controlled working pump and an electronically controlled steering pump. The electronically controlled working pump and the electronically controlled steering pump are variable displacement pumps and are both controlled by a whole-machine controller, i.e., the whole-machine controller can dynamically and accurately control the displacement of the electronically controlled working pump and the electronically controlled steering pump according to the real-time working conditions of the hybrid working machine. This fundamentally avoids the overflow loss caused by the continuous output of the dual pumps at full displacement in the prior art. The two pumps in the present application only output the flow actually required for the current action, realizing on-demand supply and significantly improving energy utilization efficiency. Furthermore, the whole-machine controller is connected to the electronic control end of the engine, the electronically controlled working pump, the electronically controlled main valve, the electronically controlled steering pump and the steering gear through electrical signals, thereby realizing global control of the hybrid working machine hydraulic control system to achieve the purpose of precise control and energy optimization.

[0016] Furthermore, a priority valve is integrated into the flow amplification valve. Under normal circumstances, the flow amplification valve prioritizes the required steering flow, ensuring sensitive and safe steering response. When the working hydraulic subsystem is under high load, pilot oil feedback from the working cylinder group drives the priority valve to open and supply oil to the merging line. This allows the electronically controlled steering pump to automatically replenish some or all of the excess steering flow through the merging line to the working oil circuit, meeting the flow requirements of combined actions (especially steering and high-load operations) and significantly improving controllability.

[0017] Other features and advantages of the embodiments of the present application will be described in detail in the subsequent detailed description. BRIEF DESCRIPTION OF THE DRAWINGS

[0018] The accompanying drawings are used to provide a further understanding of the embodiments of the present application and constitute a part of the specification. Together with the following specific embodiments, they are used to explain the embodiments of the present application, but do not constitute a limitation on the embodiments of the present application. For those skilled in the art, other drawings can be obtained based on the structures shown in these drawings without inventive work. In the drawings: Figure 1 This is a structural block diagram of a hybrid working machine hydraulic control system provided in this application; Figure 2 A schematic diagram of the modular structure of a hybrid working machine hydraulic control system provided in this application; Figure 3 This is the electronic control logic diagram of the working hydraulic subsystem in the hydraulic control system of the hybrid working machine provided in this application; Figure 4 This is the electronic control logic diagram of the steering hydraulic subsystem in the hybrid working machine hydraulic control system provided in this application.

[0019] Description of Reference Numerals 100. Machine controller; 200, hybrid power subsystem; 210, engine; 220, generator; 300, working hydraulic subsystem; 310, electronically controlled working pump; 320, electronically controlled main valve; 330, working cylinder group; 331, boom cylinder; 332, bucket cylinder; 400, steering hydraulic subsystem; 410, electronically controlled steering pump; 420, flow amplification valve; 430, steering gear; 440, steering actuator cylinder; 450, priority valve; 460, angle sensor; 500, hydraulic oil tank; 600, electronically controlled operating handle; 700, combined pipeline; 800, pilot line; 900. Transfer case. DETAILED DESCRIPTION

[0020] The following describes the specific embodiments of the present application in detail with reference to the accompanying drawings. It should be understood that the specific embodiments described herein are only used to illustrate and explain the present application and are not intended to limit the present application.

[0021] The present application will be described in detail below with reference to the accompanying drawings and in conjunction with exemplary embodiments.

[0022] See also Figure 1 and Figure 2 , this embodiment provides a hybrid working machine hydraulic control system, which is applied to the working machine.

[0023] The hybrid working machine hydraulic control system includes a whole machine controller 100, a hybrid power subsystem 200, a working hydraulic subsystem 300, and a steering hydraulic subsystem 400. The whole machine controller 100 can be used to obtain signals, process signals, and send signals.

[0024] Hybrid power subsystem 200 achieves hybrid power output. Specifically, hybrid power subsystem 200 includes an engine 210 and a generator 220. Generator 220 is transmission-connected to engine 210 to provide electrical energy, which is used to maintain the normal and stable operation of the hybrid working machine's hydraulic control system. The electronic control terminal of engine 210 is electrically connected to the machine controller 100. This allows the machine controller 100 to control the start and stop of engine 210 and adjust its speed via electrical signals.

[0025] The hydraulic subsystem 300 is used to drive the hybrid work machine's working components, such as the boom and bucket. It includes an electrically controlled working pump 310, an electrically controlled main valve 320, and a working cylinder group 330, all interconnected by a hydraulic circuit. The drive end of the electrically controlled working pump 310 is drivingly connected to the output shaft of the generator 220. Both the control end of the electrically controlled working pump 310 and the electrically controlled main valve 320 are electrically connected to the machine controller 100.

[0026] The steering hydraulic subsystem 400 is used to drive the hybrid working machine's vehicle steering. It includes an electronically controlled steering pump 410, a flow amplification valve 420, a steering gear 430, and a steering actuator cylinder 440, all interconnected in sequence. The drive end of the electronically controlled steering pump 410 is drivingly connected to the output shaft of the generator 220. The control end of the electronically controlled steering pump 410 and the steering gear 430 are both electrically connected to the machine controller 100.

[0027] Furthermore, the engine 210 and the generator 220 utilize a series transmission system. To ensure that the output shaft of the generator 220 can drive the electronically controlled working pump 310 and the electronically controlled steering pump 410, this embodiment configures a transfer case 900 as a transmission element on the output shaft side of the generator 220. The transfer case 900 connects the electronically controlled working pump 310 and the electronically controlled steering pump 410 to each other through the transfer case 900, thereby transmitting the torque output by the output shaft of the generator 220 to the corresponding electronically controlled working pump 310 and the electronically controlled steering pump 410 through the transfer case 900, thereby driving the electronically controlled working pump 310 and the electronically controlled steering pump 410. Of course, in some embodiments, the transfer case 900 can also be replaced with a mechanical transmission mechanism such as a gear transmission structure, a sprocket transmission structure, or a pulley transmission mechanism. It should be understood that the above is merely illustrative and does not limit the scope of protection of this application.

[0028] Please also refer to Figure 3 and Figure 4In this embodiment, the flow amplification valve 420 has a built-in priority valve 450 and is connected to the electronically controlled main valve 320 through a merging pipe 700. When the working hydraulic subsystem 300 is under high load, the pilot oil feedback from the working execution cylinder group 330 drives the priority valve 450 to open and supply oil to the merging pipe 700.

[0029] The flow amplification valve 420 can be a hydraulic booster, converting low hydraulic flow into high flow. The priority valve 450, through its converging action, provides higher hydraulic power to the working hydraulic subsystem 300, thereby improving the hybrid working machine's performance (making heavier objects easier to lift and grasp). Integrating the priority valve 450 into the flow amplification valve 420 not only saves space and simplifies the hydraulic circuit layout, but also improves the hybrid working machine's performance through the converging action.

[0030] It is understandable that in the prior art, traditional fixed-displacement systems (fixed displacement pump + variable displacement pump) typically maintain full displacement output for both pumps during actual operation, resulting in a significant amount of energy wasted through overflow. To this end, the working hydraulic subsystem 300 and steering hydraulic subsystem 400 in the hybrid working machine hydraulic control system provided in this embodiment utilize an electronically controlled working pump 310 and an electronically controlled steering pump 410, respectively. Both the electronically controlled working pump 310 and the electronically controlled steering pump 410 draw oil from the hydraulic oil tank 500 in the hybrid working machine hydraulic control system for supply. The electronically controlled working pump 310 and the electronically controlled steering pump 410 are variable displacement pumps, and their control terminals are both connected to the machine controller 100.

[0031] In this way, the machine controller 100 can dynamically and precisely control the displacement of the electronically controlled working pump 310 and the electronically controlled steering pump 410 based on the real-time operating conditions of the hybrid working machine. When the actuators (working cylinder group 330 and steering cylinder 440) require low flow, the pump displacement is reduced; when high flow is required, the displacement is increased. This avoids overflow losses caused by the electronically controlled working pump 310 and the electronically controlled steering pump 410 continuously operating at full displacement. Both pumps only deliver the flow actually required for the current action, achieving on-demand supply and significantly improving energy efficiency.

[0032] Furthermore, the whole machine controller 100 is connected to the electronic control end of the engine 210, the electronically controlled working pump 310, the electronically controlled main valve 320, the electronically controlled steering pump 410 and the steering gear 430 through electrical signals, thereby realizing global control of the hydraulic control system of the hybrid working machinery to achieve the purpose of precise control and energy optimization.

[0033] Furthermore, a priority valve 450 is integrated into the flow amplification valve 420. Under normal circumstances, the flow amplification valve 420 prioritizes the flow required for steering, ensuring a sensitive and safe steering response. When the working hydraulic subsystem 300 is under high load, pilot oil fed back from the working actuator cylinder group 330 (a pilot line 800 can be set up to connect to the priority valve 450) drives the priority valve 450 to open and supply oil to the merging line 700. This allows the electronically controlled steering pump 410 to automatically replenish some or all of the excess steering flow through the merging line 700 to the working oil circuit, meeting the flow requirements of combined actions (especially steering and high-load operations) and significantly improving controllability.

[0034] See also Figure 2 and Figure 3 In this embodiment, the working machine may be a loader, wherein the working cylinder group 330 includes a boom cylinder 331 and a bucket cylinder 332. The boom cylinder 331 mainly controls the operation of the working boom of the working machine, and the bucket cylinder 332 mainly controls the operation of the working bucket of the working machine.

[0035] See also Figure 2 and Figure 3 The hybrid work machine hydraulic control system also includes an electronically controlled operating handle 600, which is electrically connected to the machine controller 100. The electronically controlled operating handle 600 can be pushed forward or pulled backward. The angle of the electronically controlled operating handle 600 changes as it is moved. This angle change is converted into an electrical signal (current) and fed back to the machine controller 100.

[0036] The machine controller 100 is configured to obtain a toggle angle signal from the electronically controlled operating handle 600 and control the engine 210 speed based on the toggle angle signal. The engine 210 speed is directly proportional to the toggle angle of the electronically controlled operating handle 600. As a result, a greater forward or backward angle of the electronically controlled operating handle 600 generates a greater current, thereby increasing the engine 210 speed. This increases the flow rate output by the electronically controlled working pump 310, resulting in faster movement of the boom cylinder 331 and bucket cylinder 332 and higher control precision.

[0037] It should be noted that since different engine speeds correspond to different fuel consumption, the system can be preset to operate the engine 210 in an economical speed range with low fuel consumption to achieve maximum energy conservation. Thus, when the electronic control handle 600 is switched to the maximum angle, the whole machine controller 100 controls the engine 210 to increase its speed to the system-preset low-power rated speed.

[0038] It's understandable that when the engine 210 reaches its rated speed, it's in the economic speed range. At this point, the electronically controlled working pump 310 is already at its maximum required speed. During operation, the driver only needs to control the opening of the electronically controlled main valve 320 to achieve efficient operation, eliminating the need to press the accelerator pedal, simplifying operation. This not only reduces engine 210 fuel consumption but also improves the efficiency of the hydraulic subsystem 300.

[0039] Furthermore, the electrically controlled working pump 310 is an electrically controlled variable displacement piston pump. The whole machine controller 100 is configured to apply a first current signal to the electrically controlled working pump 310 based on the toggle angle signal to achieve stepless control of the pump displacement. The control current of the first current signal is adjustable within a range of 280-750 mA. This ensures that the working flow rate output by the electrically controlled working pump 310 precisely matches the working demand, reduces unnecessary flow output, lowers energy consumption, and achieves energy-saving effects.

[0040] The oil inlet and / or oil return of the electrically controlled main valve 320 are both controlled by an electro-proportional valve core. In this embodiment, both the oil inlet and oil return of the electrically controlled main valve 320 are controlled by an electro-proportional valve core. Specifically, the oil inlet of the electrically controlled main valve 320 is controlled by the electro-proportional valve core, thereby dynamically controlling the flow rate entering the electrically controlled main valve 320 in real time according to the needs of the working hydraulic subsystem 300. The oil return of the electrically controlled main valve 320 is also controlled by an independent electro-proportional valve core, which dynamically controls the return oil pressure in real time according to needs, thereby adjusting the return oil back pressure of the cylinders in the working execution cylinder group 330, improving the smoothness of the movement and enhancing the micro-control performance of the system.

[0041] See also Figure 2 and Figure 4 The steering gear 430 is provided with an angle sensor 460 electrically connected to the whole machine controller 100 , and the angle sensor 460 is used to detect a rotation angle signal of the steering gear 430 .

[0042] The vehicle controller 100 is configured to obtain a rotation angle signal and control the electronically controlled steering pump 410 to output a preset flow rate based on the rotation angle signal. The flow rate output of the steering hydraulic subsystem 400 is positively correlated only with the angle and velocity of the steering gear 430, and is independent of load resistance. This ensures smooth and stable steering action and avoids shock.

[0043] Furthermore, the controller 100 applies a second current signal to the electronically controlled steering pump 410 based on the rotation angle signal to achieve stepless control of the pump displacement. The second current signal has an adjustable range of 200-750 mA. This allows for more precise flow control of the steering actuator cylinder 440, achieving energy savings and minimizing the impact of steering start and stop.

[0044] In this embodiment, the electronically controlled steering pump 410 is an electronically controlled variable displacement piston pump; when the steering hydraulic subsystem 400 performs a steering operation, the electronically controlled steering pump 410 independently supplies oil.

[0045] Furthermore, this embodiment also provides a control system assembly, which is applied to a hybrid working machine. The control system assembly includes the hybrid working machine hydraulic control system provided above.

[0046] This embodiment also provides a working machine, including the hybrid working machine hydraulic control system or the control system assembly provided above. The working machine may be a loader, specifically a hybrid loader.

[0047] Compared with the prior art, the working machine provided by this embodiment has the following advantages: 1. Improve the controllability of the working hydraulic subsystem 300 and the steering hydraulic subsystem 400 and achieve greater energy saving.

[0048] 2. Real-time dynamic control of the return oil back pressure of the boom cylinder 331 to improve the smoothness and stability of the boom descent.

[0049] 3. Achieve precise steering control, smoother and more stable steering action, and smaller start-stop impact.

[0050] 4. The engine 210 is controlled at a constant speed. The operating efficiency of the working device is only related to the angle of the electronic control handle 600 and has nothing to do with the accelerator pedal, which simplifies operation and improves work efficiency.

[0051] In this embodiment, unless specifically described, "electrical signal connection" refers to a circuit control line connection. Wireless communication can also be used. The machine controller 100 of the work machine is the core component for controlling various functions of the work machine and primarily includes a controller, display, sensors, and the like. The controller typically utilizes embedded soft PLC electronic control technology.

[0052] It should be noted that in this application, unless otherwise specified, the terms "center", "longitudinal", "lateral", "length", "width", "thickness", "up", "down", "front", "back", "left", "right", "vertical", "horizontal", "top", "bottom", "inside", "outside", "clockwise", "counterclockwise", "axial", "radial", "circumferential" and the like used to indicate orientations or positional relationships are based on the orientations or positional relationships shown in the accompanying drawings, and are only for the convenience of describing this application and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation, and therefore should not be understood as a limitation on this application.

[0053] In the description of this application, it should be understood that the terms "first" and "second" are used for descriptive purposes only and should not be understood to indicate or imply relative importance or implicitly specify the number of technical features indicated. Therefore, a feature defined as "first" or "second" may explicitly or implicitly include at least one of such features. In the description of this application, "plurality" means at least two, for example, two, three, etc., unless otherwise specifically defined.

[0054] In this application, unless otherwise specified or limited, the terms "installed," "connected," "connect," "fixed," etc. should be understood in a broad sense. For example, they can refer to fixed connection, detachable connection, or integration; mechanical connection, electrical connection, or communication; direct connection or indirect connection through an intermediate medium; internal communication between two elements or interaction between two elements, unless otherwise specified. Those skilled in the art will understand the specific meanings of the above terms in this application based on specific circumstances.

[0055] In the description of this specification, the description with reference to the terms "one embodiment", "some embodiments", "example", "specific example", or "some examples" means that the specific features, structures, materials or characteristics described in conjunction with the embodiment or example are included in at least one embodiment or example of the present application. In this specification, the schematic representations of the above terms do not necessarily refer to the same embodiment or example. Moreover, the specific features, structures, materials or characteristics described can be combined in any one or more embodiments or examples in a suitable manner. In addition, those skilled in the art can combine and combine different embodiments or examples described in this specification and features of different embodiments or examples without contradiction.

[0056] Although the embodiments of the present application have been shown and described above, it can be understood that the above embodiments are exemplary and cannot be understood as limitations on the present application. Ordinary technicians in this field can change, modify, replace and modify the above embodiments within the scope of the present application.

Claims

1. A hybrid working machine hydraulic control system, comprising: Machine controller (100); A hybrid power subsystem (200) includes an engine (210) and a generator (220), wherein the generator (220) is connected to the engine (210) in a transmission manner for providing electric energy, and an electric control terminal of the engine (210) is connected to the whole machine controller (100) via an electrical signal. A working hydraulic subsystem (300) comprises an electrically controlled working pump (310), an electrically controlled main valve (320), and a working execution cylinder group (330) connected in sequence via a working oil circuit, wherein a driving end of the electrically controlled working pump (310) is drivingly connected to an output shaft of the generator (220), and a control end of the electrically controlled working pump (310) and the electrically controlled main valve (320) are both electrically signal-connected to the whole machine controller (100); and A steering hydraulic subsystem (400) comprises an electronically controlled steering pump (410), a flow amplifying valve (420), a steering gear (430), and a steering actuator cylinder (440) connected in sequence to a steering oil circuit, wherein a driving end of the electronically controlled steering pump (410) is drivingly connected to an output shaft of the generator (220), and a control end of the electronically controlled steering pump (410) and the steering gear (430) are both electrically signal-connected to the whole machine controller (100); The flow amplification valve (420) has a built-in priority valve (450) and is connected to the electrically controlled main valve (320) via a merging pipeline (700). When the working hydraulic subsystem (300) is under high load, the pilot oil fed back from the working execution cylinder group (330) drives the priority valve (450) to open and supply oil to the merging pipeline (700).

2. The hybrid working machine hydraulic control system according to claim 1, characterized in that: The hybrid working machine hydraulic control system further comprises an electric control operating handle (600), wherein the electric control operating handle (600) is electrically connected to the whole machine controller (100); The whole machine controller (100) is configured as follows: A toggle angle signal of the electric control operating handle (600) is obtained, and the rotation speed of the engine (210) is controlled according to the toggle angle signal, wherein the rotation speed of the engine (210) is directly proportional to the toggle angle of the electric control operating handle (600).

3. The hybrid working machine hydraulic control system according to claim 2, characterized in that: When the toggle angle of the electric control operating handle (600) is switched to the maximum, the whole machine controller (100) controls the rotation speed of the engine (210) to increase to a low-power consumption rated rotation speed state preset by the system.

4. The hybrid working machine hydraulic control system according to claim 2, characterized in that: The electrically controlled working pump (310) is an electrically controlled variable displacement piston pump, and the whole machine controller (100) is used to apply a first current signal to the electrically controlled working pump (310) according to the toggle angle signal to perform stepless regulation of the pump displacement, wherein the adjustment range of the control current of the first current signal is 280-750 mA.

5. The hybrid working machine hydraulic control system according to any one of claims 1 to 4, characterized in that: The oil inlet and / or oil return of the electric-controlled main valve (320) are both controlled by an electric proportional valve core; And / or, the work execution cylinder group (330) includes a boom cylinder (331) and a bucket cylinder (332).

6. The hybrid working machine hydraulic control system according to claim 1, characterized in that: The steering gear (430) is provided with an angle sensor (460) electrically connected to the whole machine controller (100), and the angle sensor (460) is used to detect a rotation angle signal of the steering gear (430); The whole machine controller (100) is configured as follows: The rotation angle signal is acquired and the electronically controlled steering pump (410) is controlled to output a flow rate of a preset magnitude according to the rotation angle signal.

7. The hybrid working machine hydraulic control system according to claim 6, characterized in that: The whole machine controller (100) is used to apply a second current signal to the electronically controlled steering pump (410) according to the rotation angle signal to perform stepless regulation of the pump displacement; The adjustment range of the control current of the second current signal is 200-750 mA.

8. The hybrid working machine hydraulic control system according to claim 6 or 7, characterized in that: The electronically controlled steering pump (410) is an electronically controlled variable displacement plunger pump; When the steering hydraulic subsystem (400) performs a steering operation, the electronically controlled steering pump (410) independently supplies oil.

9. A control system assembly, applied to a hybrid working machine, characterized in that: The control system assembly includes the hybrid working machine hydraulic control system according to any one of claims 1-8.

10. A working machine, characterized in that: It comprises the hybrid working machine hydraulic control system according to any one of claims 1 to 8 or the control system assembly according to claim 9.

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