Fracturing operation control method and device, fracturing system and fracturing truck

Abstract

The invention relates to a fracturing operation control method and device, a fracturing system and a fracturing truck, the method is applied to a controller in the fracturing system, and the fracturing system further comprises an energy storage unit, a driving module and a fracturing pump; the driving module comprises a motor unit electrically connected with the energy storage unit, and the controller is connected with the energy storage unit and the motor unit. The power output end of the motor unit is in transmission connection with the power input end of the fracturing pump; the method comprises the steps of obtaining a mode selection signal; the mode selection signal is used for representing the working mode of the currently executed fracturing operation; and when the working mode is determined to be an energy storage power supply mode according to the mode selection signal, the energy storage unit is controlled to supply power to the motor unit so as to drive the motor unit to output power to the fracturing pump. The oil and gas field fracturing operation requirement can be effectively met in an energy-saving and environment-friendly mode.

Description

Technical Field

[0001] The present application relates to the technical field of wellsite equipment, and particularly to a control method, device, fracturing system and fracturing vehicle for fracturing operations. Background Art

[0002] Traditional oil and gas field fracturing operations, also known as oil and gas field stimulation operations, have much smaller working parameters such as working flow rate, working pressure, total liquid injection volume, total sand injection volume, and injection duration during fracturing construction compared to large-scale industrialized fracturing construction.

[0003] For the above-mentioned traditional oil and gas field stimulation operations, the working equipment for fracturing construction currently mainly uses diesel-driven fracturing equipment. Existing complete sets of electric-driven fracturing equipment are restricted by factors such as the wellsite area, construction scale, and power supply facilities of oil and gas fields, and thus cannot be effectively promoted and applied in the above-mentioned traditional oil and gas field stimulation operations. As a result, traditional oil and gas field stimulation operations mainly using diesel-driven fracturing equipment have problems such as high fuel costs, low energy efficiency, and environmental unfriendliness. Summary of the Invention

[0004] Based on this, it is necessary to provide a control method, device, fracturing system and fracturing vehicle for fracturing operations that can meet the energy conservation and environmental protection requirements of oil and gas field fracturing operations in view of the above technical problems.

[0005] In a first aspect, in one embodiment, the present application provides a control method for fracturing operations, which is applied to a controller in a fracturing system. The fracturing system further includes an energy storage unit, a drive module, and a fracturing pump; the drive module includes a motor unit electrically connected to the energy storage unit, and the controller is respectively connected to the energy storage unit and the motor unit; the power output end of the motor unit is drivingly connected to the power input end of the fracturing pump; the method includes:

[0006] Obtain a mode selection signal; the mode selection signal is used to represent the working mode of the current fracturing operation being performed.

[0007] When it is determined according to the mode selection signal that the working mode is the energy storage power supply mode, control the energy storage unit to supply power to the motor unit to drive the motor unit to output power to the fracturing pump.

[0008] In one of the embodiments, the method further includes:

[0009] When it is determined according to the mode selection signal that the working mode is the external power supply mode, control the motor unit to use external power supply to output power to the fracturing pump.

[0010] In one embodiment, the fracturing system further includes a power generation module; the power generation module includes an engine, a power take-off, and a generator connected to the controller; the power output terminal of the generator is electrically connected to the energy storage unit and the motor unit respectively; the power output terminal of the engine is connected to the power input terminal of the power take-off, and the power output terminal of the power take-off is connected to the power input terminal of the generator; the method further includes:

[0011] When it is determined according to the mode selection signal that the working mode is the hybrid drive mode, control the generator to obtain power from the engine through the power take-off for power generation operation, and use the generated power of the generator and the power of the energy storage unit to jointly drive the motor unit to output power to the fracturing pump.

[0012] In one embodiment, the method further includes:

[0013] In the case where it is determined according to the mode selection signal that the working mode is the intermittent operation mode, perform the following steps:

[0014] When the energy storage unit is fully charged, control the energy storage unit and the generator to jointly drive the motor unit to output power to the fracturing pump until the power of the energy storage unit is exhausted;

[0015] When the power of the energy storage unit is exhausted, control the fracturing pump to stop the fracturing operation, and make the generator charge the energy storage unit.

[0016] In a second aspect, in one embodiment, a control device for fracturing operations is applied to a controller in a fracturing system. The fracturing system further includes an energy storage unit, a drive module, and a fracturing pump; the drive module includes a motor unit electrically connected to the energy storage unit, and the controller is respectively connected to the energy storage unit and the motor unit; the power output terminal of the motor unit is drivingly connected to the power input terminal of the fracturing pump; the device includes:

[0017] A mode selection signal acquisition module, configured to acquire a mode selection signal; the mode selection signal is used to represent the working mode of the current fracturing operation being performed;

[0018] An energy storage power supply mode execution module, configured to, when it is determined according to the mode selection signal that the working mode is the energy storage power supply mode, control the energy storage unit to supply power to the motor unit to drive the motor unit to output power to the fracturing pump.

[0019] In a third aspect, in one embodiment, the present application provides a fracturing system, the system includes an energy storage unit, a drive module, a fracturing pump, and a controller;

[0020] The drive module includes a motor unit electrically connected to the energy storage unit, and the controller is respectively connected to the energy storage unit and the motor unit; the power output terminal of the motor unit is drivingly connected to the power input terminal of the fracturing pump;

[0021] The controller is used to obtain a mode selection signal; the mode selection signal is used to characterize the working mode of the current fracturing operation.

[0022] The controller is further used to control the energy storage unit to supply power to the motor unit to drive the motor unit to output power to the fracturing pump when it is determined according to the mode selection signal that the working mode is the energy storage power supply mode.

[0023] In one embodiment, the fracturing system further includes a power generation module; the power generation module includes an engine, a power take-off and a generator connected to the controller.

[0024] The power generation output terminal of the generator is electrically connected to the energy storage unit and the motor unit respectively; the power output terminal of the engine is connected to the power input terminal of the power take-off, and the power output terminal of the power take-off is connected to the power input terminal of the generator.

[0025] In one embodiment, the drive module further includes a frequency conversion unit; the energy storage unit includes an energy storage battery, a power management system and an energy storage converter.

[0026] The energy storage battery is connected to one end of the energy storage converter; the other end of the energy storage converter is connected to the power generation output terminal of the power generation module and the power supply terminal of the motor unit respectively.

[0027] One end of the frequency conversion unit is connected to the other end of the energy storage converter and the power generation output terminal of the generator respectively, and the other end of the frequency conversion unit is connected to the power supply terminal of the motor unit.

[0028] The power management system is connected to the energy storage battery and the energy storage converter respectively.

[0029] In one embodiment, the energy storage unit further includes a first transformer; the drive module further includes a power distribution unit.

[0030] The first transformer is connected between the other end of the energy storage converter and one end of the frequency conversion unit; one end of the power distribution unit is used to connect to the power generation output terminal of the generator and / or the power grid line, and the other end of the power distribution unit is connected between the other end of the first transformer and one end of the frequency conversion unit; the power management system is also connected to the first transformer.

[0031] In one embodiment, the drive module further includes a paralleling cabinet, a second transformer and a third transformer.

[0032] The first end of the paralleling cabinet is connected to the other end of the energy storage converter; the second end of the paralleling cabinet is connected to one end of the second transformer, and the other end of the second transformer is used to connect to the external power grid; the third end of the paralleling cabinet is connected to one end of the third transformer, and the other end of the third transformer is connected to one end of the frequency conversion unit; the fourth end of the paralleling cabinet is connected to the power generation output terminal of the generator.

[0033] In a fourth aspect, in one embodiment, the present application provides a fracturing vehicle, comprising a first chassis vehicle and the fracturing system described in any one of the above embodiments; the fracturing system is disposed on the first chassis vehicle.

[0034] In a fifth aspect, in one embodiment, the present application provides another fracturing vehicle, which is electrically connected to an energy storage vehicle provided with an energy storage unit; the fracturing vehicle includes a second chassis vehicle, a controller, a drive module and a fracturing pump, and the controller, the drive module and the fracturing pump are provided on the second chassis vehicle;

[0035] The drive module includes a motor unit, and the controller is connected to the motor unit; the power output end of the motor unit is transmission-connected to the power input end of the fracturing pump; the drive module and the controller are also respectively used to electrically connect the energy storage unit of the energy storage vehicle;

[0036] Among them, the controller is used to obtain a mode selection signal; the mode selection signal is used to characterize the working mode of the currently performed fracturing operation; the controller is also used to control the energy storage unit to supply power to the motor unit when the working mode is determined to be an energy storage power supply mode according to the mode selection signal, so as to drive the motor unit to output power to the fracturing pump.

[0037] In one of the embodiments, the energy storage vehicle further includes a power generation module;

[0038] The power generation module includes an engine, a power take-off and a generator connected to a controller; the power output end of the generator is electrically connected to the energy storage unit and the motor unit of the fracturing vehicle respectively; the power output end of the engine is connected to the power input end of the power take-off, and the power output end of the power take-off is connected to the power input end of the generator.

[0039] The control method, device, fracturing system and fracturing vehicle of the above-mentioned fracturing operation can use the controller to obtain the mode selection signal, and when it is determined according to the mode selection signal that the current fracturing operation mode is the energy storage power supply mode, the controller can control the energy storage unit to power the motor unit to drive the motor unit to output power to the fracturing pump, thereby enabling the fracturing pump of the fracturing system to effectively meet the fracturing operation needs of the oil and gas field in an energy-saving and environmentally friendly manner. BRIEF DESCRIPTION OF THE DRAWINGS

[0040] In order to more clearly illustrate the technical solutions in the embodiments of the present application or related technologies, the drawings required for use in the embodiments of the present application or related technical descriptions will be briefly introduced below. Obviously, the drawings described below are only some embodiments of the present application. For ordinary technicians in this field, other related drawings can be obtained based on these drawings without paying creative work.

[0041] Figure 1 A diagram showing an application environment of a method for controlling a fracturing operation in an embodiment;

[0042] Figure 2 Schematic flow chart of a control method for a fracturing operation in an embodiment;

[0043] Figure 3 Block diagram of a fracturing system in an embodiment;

[0044] Figure 4 Schematic flow chart of an intermittent operation mode in an embodiment;

[0045] Figure 5 Block diagram of a control device for a fracturing operation in an embodiment;

[0046] Figure 6 Block diagram of another fracturing system in an embodiment;

[0047] Figure 7 Block diagram of yet another fracturing system in an embodiment;

[0048] Figure 8 Schematic diagram of a power supply principle of a fracturing system in an embodiment;

[0049] Figure 9 Block diagram of still another fracturing system in an embodiment;

[0050] Figure 10 Schematic diagram of another power supply principle of a fracturing system in an embodiment;

[0051] Figure 11 Schematic diagram of the structure of a fracturing vehicle in an embodiment;

[0052] Figure 12 Schematic diagram of the structure of another fracturing vehicle in an embodiment;

[0053] Figure 13 Schematic diagram of the structure of yet another fracturing vehicle in an embodiment;

[0054] Figure 14 Schematic diagram of the structure of an energy storage vehicle in an embodiment;

[0055] Figure 15 Schematic diagram of the structure of another energy storage vehicle in an embodiment;

[0056] Figure 16 Internal structure diagram of an electronic device in an embodiment. Detailed implementation manners

[0057] In order to make the objectives, technical solutions and advantages of this application clearer, the following further elaborates on this application in conjunction with the accompanying drawings and embodiments. It should be understood that the specific embodiments described herein are merely used to explain this application and are not used to limit this application.

[0058] It should be noted that when an element is considered to be "connected" to another element, it can be directly connected to the other element or connected to the other element through an intermediate element. In addition, for the "connection" in the following embodiments, if there is a transmission of electrical signals or data between the connected objects, it should be understood as "electrically connected", "communicatively connected", etc.

[0059] As used herein, the singular forms "a", "an" and "the" may also include the plural forms unless the context clearly dictates otherwise. It should also be understood that the terms "comprises / comprising" or "has / having" etc. specify the presence of the stated features, wholes, steps, operations, components, parts or combinations thereof, but do not preclude the presence or addition of one or more other features, wholes, steps, operations, components, parts or combinations thereof. At the same time, the term "and / or" used in this specification includes any and all combinations of the related listed items.

[0060] The control method for the fracturing operation provided by the embodiments of the present application can be applied to an application environment as Figure 1 shown. Among them, the fracturing system 10 includes an energy storage unit 12, a drive module 14, a fracturing pump 18, and a controller 16; the drive module 14 includes a motor unit 141 electrically connected to the energy storage unit 12, and the controller 16 is respectively connected to the energy storage unit 12 and the motor unit 141; the power output end of the motor unit 141 is in transmission connection with the power input end of the fracturing pump 18; the controller 16 can be used to obtain a control signal sent by a system user. Optionally, the above control signal can be a signal for selecting the working mode of the fracturing operation.

[0061] Exemplarily, the energy storage unit 12 can be used to store and manage electrical energy and can provide electrical energy for the motor unit 141 (or the main motor) of the drive module 14 during the fracturing operation. Optionally, the interior of the energy storage unit 12 can include a battery module such as an energy storage battery and a battery bracket, a power management system (Energy Management System, EMS), a power conversion system (Power Conversion System, PCS), a heat dissipation module (such as a liquid chiller, etc.), and a transformer, etc.

[0062] It can be understood that the specific structure of the above energy storage unit is not limited to the implementation manners already mentioned in the above embodiments, as long as it can achieve the function of storing / managing electrical energy, and the embodiments of the present application do not specifically limit the specific structure of the energy storage unit.

[0063] In an exemplary embodiment, as Figure 2 shown, a control method for the fracturing operation is provided, and this method is applied to Figure 1Taking the controller 16 in it as an example for illustration, it includes the following steps S202 to S206. Among them:

[0064] Step S202, obtain a mode selection signal.

[0065] Among them, the mode selection signal can be used to represent the working mode of the current fracturing operation. In some possible implementations, the mode selection signal can be sent by the user from the cab terminal device of the fracturing vehicle to instruct the fracturing system 10 to enter the working mode matching the mode selection signal according to the user's fracturing operation requirements.

[0066] Specifically, after receiving the mode selection signal, the controller 16 can control the relevant components of the fracturing system 10 to perform the actions of the working mode corresponding to the mode selection signal.

[0067] Step S204, when it is determined according to the mode selection signal that the working mode is the energy storage power supply mode, control the energy storage unit 12 to supply power to the motor unit 141 to drive the motor unit 141 to output power to the fracturing pump 18.

[0068] Specifically, the controller 16 can, according to the received mode selection signal of the energy storage power supply mode, instruct the motor unit 141 to convert the electric energy received from the power supply end from the energy storage unit 12 into mechanical energy and output it to the fracturing pump 18, so that the input power can be used to perform the fracturing operation.

[0069] Exemplarily, the above energy storage power supply mode can be enabled when the energy storage unit 12 of the fracturing system 10 has sufficient power. For example, when the power of the current energy storage unit 12 of the fracturing system 10 is higher than the first power threshold, the user can send a mode selection signal corresponding to the energy storage power supply mode to the controller 16 automatically or manually, and after the controller 16 receives the mode selection signal, it can control the energy storage unit 12 to supply power to the motor unit 141 to drive the motor unit 141 to output power to the fracturing pump 18 through a speed governor, so as to meet the user's fracturing operation requirements. It can be understood that the above energy storage power supply mode can also be applied to other system situations. For example, it can be enabled manually by the user or automatically by the system according to the current performance of the system (such as the power situation, etc.) combined with the specific working conditions of the system (such as the load situation of the fracturing pump 18, etc.).

[0070] In some possible implementations, the motor unit 141 can be a single driving motor or a motor group composed of multiple small motors. When the motor unit 141 is a motor group composed of multiple small motors, the energy storage unit 12 can output a low-voltage power supply current to drive each small motor, without the need for a large transformer for boosting operation, thereby reducing the equipment production and operation and maintenance costs and avoiding the risk of high-voltage operation of the equipment.

[0071] In some examples, a speed governor communicatively connected to the controller 16 may be provided between the motor unit 141 and the fracturing pump 18. The above speed governor can be used to automatically adjust the rotation speed and torque input to the fracturing pump 18, so as to adjust the output displacement and pressure of the fracturing pump 18 during the fracturing operation.

[0072] Optionally, the control method of the fracturing operation can be applied to the fracturing operation in a small well site environment. For the fracturing operation in a small well site, "low displacement and high pressure" or "high displacement and low pressure" short-time fracturing operations are usually required. However, due to the small scale of the small well site, power grid lines may not be configured in the well site. If traditional electric-driven fracturing equipment is used for operation, it may not be able to effectively drive the fracturing equipment to perform fracturing work in the case where the small well site does not have power grid lines. By enabling the fracturing system 10 to execute the energy storage power supply mode and using the power of the energy storage unit 12 to drive the motor to output power to the fracturing pump 18, the fracturing operation requirements of the well site without a power grid can be effectively met.

[0073] The above control method of the fracturing operation obtains a mode selection signal through the controller 16, and when it is determined that the working mode of the current fracturing system 10 is the energy storage power supply mode, controls the energy storage unit 12 to supply power to the motor unit 141, so as to drive the motor unit 141 to output power to the fracturing pump 18, so as to perform the fracturing operation in the corresponding working mode according to the user's fracturing operation requirements. By enabling the fracturing system 10 to execute the energy storage power supply mode and using the power of the energy storage unit 12 to drive the motor to output power to the fracturing pump 18, the use of diesel-driven fracturing equipment in the oil and gas field stimulation operation is reduced, and further the use of fuel and the emission of equipment pollution during the fracturing operation are reduced, making the fracturing operation meet the requirements of environmental protection and energy conservation. It can be understood that the controller 16 can also receive mode selection signals matching other working modes of the fracturing operation, effectively improving the flexibility of the application of the control method of the fracturing operation.

[0074] In one embodiment, the method further includes the following steps:

[0075] When it is determined according to the mode selection signal that the working mode is the external power supply mode, control the motor unit 141 to output power to the fracturing pump 18 using the external power supply.

[0076] Wherein, the external power supply can be an external power source that inputs electric energy to the fracturing system 10. Optionally, the external power supply can include power grid line power supply and / or external generator equipment power supply.

[0077] Specifically, when it is determined according to the mode selection signal that the working mode of the current fracturing system 10 is the external power supply mode, the controller 16 can control the motor unit 141 to obtain electrical energy from a power source outside the fracturing system 10 (such as grid power or an external generator of the system), thereby converting the obtained electrical energy into mechanical energy and outputting power to the fracturing pump 18 to drive the fracturing pump 18 to perform corresponding fracturing operations according to the fracturing operation requirements.

[0078] In some examples, the external power supply mode can be enabled when the power storage unit 12 of the fracturing system 10 is short of power. For example, when the power of the power storage unit 12 of the current fracturing system 10 is lower than the second power threshold, the user can send a mode selection signal corresponding to the external power supply mode to the controller 16 manually or automatically. After receiving the mode selection signal, the controller 16 can control the motor unit 141 to use external power supplies such as grid power or an external generator of the system to supply power and output power to the fracturing pump 18 to meet the user's fracturing operation requirements. It can be understood that the above external power supply mode can also be applied to other system situations. For example, the external power supply mode can be enabled manually by the user or automatically by the system according to the current performance of the system (such as the power situation, etc.) and the specific working conditions of the system (such as the load situation of the fracturing pump 18, etc.).

[0079] It can be understood that through the above method, the present application can enable the fracturing system 10 to enable the energy storage power supply mode when the power storage unit 12 has sufficient power, and enable the external power supply mode when the power storage unit 12 is short of power, so that the fracturing system 10 can meet the fracturing operation requirements under different power conditions of the power storage unit 12, and improve the flexibility and reliability of the fracturing system 10 for performing fracturing operations.

[0080] In one embodiment, as Figure 3 shown, the fracturing system further includes a power generation module 15; the power generation module 15 includes an engine 151, a power take-off 153, and a generator 155 connected to a controller ( Figure 3 not shown in the figure); the power generation output terminal of the generator 155 is electrically connected to the energy storage unit and the motor unit respectively; the power output terminal of the engine 151 is connected to the power input terminal of the power take-off 153, and the power output terminal of the power take-off 153 is connected to the power input terminal of the generator 155.

[0081] In some examples, taking the control method of the fracturing operation applied to the Figure 3 controller 16 of the shown fracturing system as an example for illustration, the method further includes the following steps:

[0082] When it is determined that the operating mode is the hybrid drive mode according to the mode selection signal, the controller controls the generator 155 to obtain power from the engine 151 through the power take-off 153 for power generation operation, and uses the generated power of the generator 155 and the power of the energy storage unit 12 to jointly drive the motor unit 141 to output power to the fracturing pump 18.

[0083] Among them, the power take-off 153 can use the engine 151 as a power source to output power to the generator 155 of the power generation module 15 to drive the generator 155 for power generation operation. It can be understood that the generated power of the generator 155 can be used to charge the energy storage unit 12 or directly drive the motor unit 141 to output power to the fracturing pump 18.

[0084] Exemplarily, the engine 151 of the power generation module 15 can be a separately provided engine 151 or directly use the chassis engine 151 of the chassis vehicle itself. When the engine 151 of the power generation module 15 uses the chassis engine 151 of the chassis vehicle itself, the fuel of the chassis vehicle can be directly used to drive the generator 155 for power generation operation, thus saving fuel storage space. Optionally, the fuel of the engine 151 can include diesel, gasoline, natural gas, hydrogen, methanol, ether, etc.

[0085] Specifically, when it is determined that the operating mode of the current fracturing system 10 is the hybrid drive mode according to the mode selection signal, the controller 16 can control the generator 155 to obtain power from the engine 151 of the power generation module 15 through the power take-off 153 for power generation operation, and use the generated power of the generator 155 and the power stored in the energy storage unit 12 to jointly drive the motor unit 141 to output power to the fracturing pump 18, so as to drive the fracturing pump 18 to perform fracturing actions according to the fracturing operation requirements of the user.

[0086] In some possible implementations, the hybrid drive mode can be enabled when the power of the energy storage unit 12 cannot supply the power demand for the fracturing operation alone and the generated power of the generator 155 needs to be used jointly to meet the power demand. For example, when the power of the energy storage unit 12 and the remaining fuel available for the power generation module 15 meet the current estimated fracturing operation requirements, the user can enable the hybrid drive mode automatically or manually. It can be understood that the above hybrid drive mode can also be applied to other system situations. For example, according to other performance situations of the system and the specific working conditions of the system, the user can enable this operating mode manually or the system can enable it automatically.

[0087] In one embodiment, the method further includes the following steps:

[0088] When it is determined that the operating mode is the intermittent operation mode according to the mode selection signal, such as Figure 4As shown, the following steps S402 to S404 are performed. Among them:

[0089] Step S402, when the energy storage unit 12 is fully charged, control the energy storage unit 12 and the generator 155 to jointly drive the motor unit 141 to output power to the fracturing pump 18 until the power of the energy storage unit 12 is exhausted.

[0090] Specifically, when it is determined according to the mode selection signal that the working mode of the current fracturing system 10 is the intermittent operation mode, if it is determined that the energy storage unit 12 is fully charged, the controller 16 controls the energy storage unit 12 and the generator 155 to jointly drive the motor unit 141 to output power to the fracturing pump 18 until the stored power of the energy storage unit 12 is exhausted.

[0091] Step S404, when the power of the energy storage unit 12 is exhausted, control the fracturing pump 18 to stop the fracturing operation and make the generator 155 charge the energy storage unit 12.

[0092] Specifically, in the case where the power of the energy storage unit 12 is exhausted, the controller 16 controls the fracturing pump 18 to stop the fracturing operation, and the generator 155 uses the output power of the engine 151 of the power generation module 15 to drive the generator 155 to charge the energy storage unit 12 until the energy storage unit 12 is fully charged; when the energy storage unit 12 is fully charged, the controller 16 continues to execute step S402, thereby realizing intermittent fracturing operations.

[0093] In some examples, the intermittent operation mode can be enabled when the energy storage unit 12 and the generator 155 need to jointly drive the motor unit 141. For example, if the remaining power and output power of the energy storage unit 12 do not meet the requirements of the fracturing operation, the energy storage unit 12 and the power generation module 15 are first used to jointly drive the motor unit 141 to output power to the fracturing pump 18; when the power of the energy storage unit 12 is exhausted (or below the preset threshold), the controller 16 instructs the fracturing system 10 to stop the fracturing operation, and the power generation module 15 performs power generation operation to charge the battery of the energy storage unit 12 until the energy storage unit 12 is fully charged and then resumes the fracturing operation. By the above method, the embodiment of the present application can enable the fracturing system 10 to always maintain a large current input to the motor unit 141 during the fracturing operation, thereby improving the load capacity of the fracturing system 10.

[0094] It can be understood that the above intermittent operation mode can also be applied to other system situations, such as enabling the working mode manually by the user or automatically by the system according to the current performance of the system and the specific working conditions of the system.

[0095] It should be understood that although the steps in the flowcharts involved in the above-described embodiments are sequentially shown according to the arrows, these steps are not necessarily executed in the order indicated by the arrows. Unless there is a clear description in this article, there is no strict order restriction for the execution of these steps, and these steps can be executed in other orders. Moreover, at least a part of the steps in the flowcharts involved in the above-described embodiments may include multiple steps or multiple stages. These steps or stages are not necessarily executed at the same time, but can be executed at different times. The execution order of these steps or stages is not necessarily sequential, but can be executed alternately or in turn with at least a part of other steps or steps or stages in other steps.

[0096] Based on the same inventive concept, an embodiment of the present application further provides a control device for a fracturing operation for implementing the control method for the fracturing operation involved above. The implementation solution provided by this device for solving problems is similar to the implementation solution described in the above method. Therefore, the specific limitations in one or more embodiments of the control device for the fracturing operation provided below can refer to the limitations on the control method for the fracturing operation in the above text, and will not be elaborated here.

[0097] In an exemplary embodiment, as Figure 5 shown, a control device 500 for a fracturing operation is provided, which is applied to a controller in a fracturing system as Figure 1 shown. The fracturing system further includes an energy storage unit, a drive module, and a fracturing pump; the drive module includes a motor unit electrically connected to the energy storage unit, and the controller is respectively connected to the energy storage unit and the motor unit; the power output end of the motor unit is in transmission connection with the power input end of the fracturing pump; the device 500 includes:

[0098] A mode selection signal acquisition module 502, configured to acquire a mode selection signal; the mode selection signal is used to represent the working mode of the currently executed fracturing operation;

[0099] An energy storage power supply mode execution module 504, configured to control the energy storage unit to supply power to the motor unit to drive the motor unit to output power to the fracturing pump when it is determined according to the mode selection signal that the working mode is the energy storage power supply mode.

[0100] In one of the embodiments, the device 500 further includes:

[0101] An external power supply mode execution module, configured to control the motor unit to output power to the fracturing pump using external power when it is determined according to the mode selection signal that the working mode is the external power supply mode.

[0102] In one of the embodiments, as Figure 3As shown, the fracturing system further includes a power generation module; the power generation module includes an engine, a power take-off, and a generator connected to the controller; the power generation output terminal of the generator is electrically connected to the energy storage unit and the motor unit respectively; the power output terminal of the engine is connected to the power input terminal of the power take-off, and the power output terminal of the power take-off is connected to the power input terminal of the generator; the device 500 further includes:

[0103] A hybrid drive mode execution module, configured to, when it is determined according to the mode selection signal that the working mode is the hybrid drive mode, control the generator to obtain power from the engine through the power take-off for power generation operations, and use the generated power of the generator and the power of the energy storage unit to jointly drive the motor unit to output power to the fracturing pump.

[0104] In one embodiment, the device 500 further includes:

[0105] An intermittent operation mode execution module, configured to, when it is determined according to the mode selection signal that the working mode is the intermittent operation mode, perform the following steps:

[0106] When the energy storage unit is fully charged, control the energy storage unit and the generator to jointly drive the motor unit to output power to the fracturing pump until the energy storage unit runs out of power;

[0107] When the energy storage unit runs out of power, control the fracturing pump to stop the fracturing operation, and cause the generator to charge the energy storage unit.

[0108] Each module in the above fracturing operation control device 500 can be implemented in whole or in part by software, hardware, and their combination. The above modules can be embedded in the processor of the computer device in hardware form or independent of it, or stored in the memory of the computer device in software form, so that the processor can call and execute the operations corresponding to the above respective modules.

[0109] In one embodiment, please refer to Figure 1 , the present application provides a fracturing system 10, the system includes an energy storage unit 12, a drive module, a fracturing pump 18, and a controller 16;

[0110] The drive module includes a motor unit 141 electrically connected to the energy storage unit 12, and the controller 16 is respectively connected to the energy storage unit 12 and the motor unit 141; the power output terminal of the motor unit 141 is drivingly connected to the power input terminal of the fracturing pump 18;

[0111] The controller 16 is configured to obtain a mode selection signal; the mode selection signal is used to represent the working mode of the current fracturing operation being performed; the controller 16 is further configured to, when it is determined according to the mode selection signal that the working mode is the energy storage power supply mode, control the energy storage unit 12 to supply power to the motor unit 141 to drive the motor unit 141 to output power to the fracturing pump 18.

[0112] It is understandable that the solution to the problem provided from the perspective of the fracturing system in the embodiments of the present application corresponds to the solution implemented from the perspective of the fracturing operation control method described above. Therefore, for the specific limitations of each unit module in one or more of the following provided embodiments of the fracturing system, reference may be made to the limitations of the corresponding unit modules in the above embodiments, which will not be elaborated herein.

[0113] In one embodiment, please refer to Figure 3 , the fracturing system 10 further includes a power generation module 15; the power generation module 15 includes an engine 151, a power take-off 153, and a generator 155 connected to the controller 16;

[0114] The power generation output terminal of the generator 155 is electrically connected to the energy storage unit and the motor unit respectively; the power output terminal of the engine 151 is connected to the power input terminal of the power take-off 153, and the power output terminal of the power take-off 153 is connected to the power input terminal of the generator 155.

[0115] In one embodiment, as Figure 6 shown, the drive module further includes a frequency conversion unit 143; the energy storage unit includes an energy storage battery 121, a power management system 125, and an energy storage inverter 123;

[0116] One end of the energy storage battery 121 is connected to the energy storage inverter 123; the other end of the energy storage inverter 123 is connected to the power generation output terminal of the power generation module and the power supply terminal of the motor unit 141 respectively;

[0117] One end of the frequency conversion unit 143 is connected to the other end of the energy storage inverter 123 and the power generation output terminal of the generator 155 respectively, and the other end of the frequency conversion unit 143 is connected to the power supply terminal of the motor unit 141;

[0118] The power management system 125 is connected to the energy storage battery 121 and the energy storage inverter 123 respectively.

[0119] Among them, the frequency conversion unit 143 can be used to perform frequency conversion processing on the power supply current input to the power supply terminal of the motor unit 141. The power management system 125 (EMS) can be used to control the cooperation between devices such as the energy storage battery 121 and the energy storage inverter 123 (PCS) to stably output voltage and current. The energy storage inverter 123 can be used to realize the conversion between AC and DC: when the energy storage battery 121 is charging, it can convert the input AC power into DC power to charge the energy storage battery 121 of the energy storage unit; when the energy storage battery 121 is discharging, it can convert the DC power output by the energy storage battery 121 into AC power for output.

[0120] In one embodiment, as Figure 7 shown, the energy storage unit further includes a first transformer 127; the drive module further includes a power distribution unit 145;

[0121] The first transformer 127 is connected between the other end of the energy storage converter 123 and one end of the frequency conversion unit 143; one end of the power distribution unit 145 is used to connect to the power generation output end of the generator 155 and / or the power grid line, and the other end of the power distribution unit 145 is connected between the other end of the first transformer 127 and one end of the frequency conversion unit 143; the power management system 125 is also connected to the first transformer 127.

[0122] Among them, the first transformer 127 can perform voltage transformation on the input current. The power distribution unit 145 (Power Distribution Unit, PDU) can be used to reasonably distribute the input power resources to multiple output ports, so as to provide stable power supply for each module unit. In this application, the power distribution unit 145 is used for current distribution, which can effectively utilize the power resources and reduce the problem of cable clutter.

[0123] In some examples, in order to further illustrate the power supply principle of the above fracturing system, combined with the Figure 8 power supply principle schematic diagram shown below to specifically illustrate one exemplary power supply process of the above fracturing system:

[0124] As shown in Figure 8 the power supply method of the fracturing system shown below demonstrates three exemplary power supply methods: grid power supply, power generation module power supply, and energy storage unit power supply. Among them:

[0125] Power supply method of grid power supply / power generation module power supply: Figure 8 The power supply principle diagram shown below demonstrates the method of supplying power to the fracturing pump 18 by 10 kV grid power (or power generation module). Specifically, the 10 kV grid power (or the output current of the power generation module) is delivered to the power distribution unit 145, and then after voltage transformation by the power distribution unit 145, multiple voltage types are output. Exemplarily, as shown in Figure 8 shown below, a 690 V current output by the power distribution unit 145 is input to the electric drive fracturing end frequency conversion unit 143, and the input current is frequency-converted by the frequency conversion unit 143 and then delivered to the motor unit 141 to drive the fracturing pump 18 to work; another 380 V current output by the power distribution unit 145 can be delivered to other devices in the system for use (such as auxiliary systems such as the heat dissipation system). It should be noted that the above 690 V and 380 V voltages are only exemplary working voltages. In actual applications, the above working voltages are not actually limited to 690 V and 380 V, and can be set according to actual application requirements. It can be understood that a power distribution unit 145 can actually supply power to multiple electric drive fracturing ends (or multiple fracturing trucks). For example, Figure 8In the power distribution unit 145, "one input and four outputs" means that when the power distribution unit 145 inputs a 10 kV power supply, it can cooperate with four independent electric drive fracturing ends (or fracturing pumps) for operation;

[0126] Power supply mode of the energy storage unit: The stored electric quantity of the energy storage battery 121 of the energy storage unit is used to supply power to the electric drive fracturing vehicle. Among them, Figure 8 The shown power management system 125 can be used to control the stable transmission of the current of the energy storage battery 121, the energy storage converter 123 and the first transformer 127. Specifically, the controller can instruct the electric quantity of the energy storage battery 121 to be transmitted to the energy storage converter 123, and then use the first transformer 127 to perform voltage conversion on the input current. The currents of different types of voltages (such as 690, 1140, 1500, 3300 V, etc.) after voltage conversion can be transmitted to each power-consuming module and power-consuming unit in the system through the line, so as to meet the power consumption requirements of different module units.

[0127] In one embodiment, as Figure 9 shown, the drive module further includes a parallel cabinet 147, a second transformer 148 and a third transformer 149;

[0128] One end of the parallel cabinet 147 is connected to the other end of the energy storage converter 123; One end of the second transformer 148 is connected to the second end of the parallel cabinet 147, and the other end of the second transformer 148 is used to connect to the external power grid; One end of the third transformer 149 is connected to the third end of the parallel cabinet 147, and the other end of the third transformer 149 is connected to one end of the frequency conversion unit 143; One end of the fourth end of the parallel cabinet 147 is connected to the power generation output end of the generator 155.

[0129] Among them, the parallel cabinet 147 can be used to converge and / or distribute the current from various power supply sources. The second transformer 148 can be used to perform voltage conversion on the current input from the external power supply (such as the power grid line, external power generation equipment, etc.) to the fracturing system 10. The third transformer 149 can be used to perform voltage conversion on the input current of the input frequency conversion unit 143.

[0130] In some examples, in order to further illustrate the power supply principle of the above-mentioned fracturing system 10, combined with the power supply principle schematic diagram as Figure 10 shown, another exemplary power supply process of the above-mentioned fracturing system 10 is specifically described:

[0131] As Figure 10 shown, the power supply principle diagram of the fracturing system shows another exemplary power supply method when performing fracturing operations. At this time, the power management system EMS ( Figure 10(not shown) can be used to control the current stability of module units such as the energy storage battery 121, the energy storage inverter 123, the second transformer 148, the third transformer 149, the parallel cabinet 147, and the power generation module 15.

[0132] Specifically, the parallel cabinet 147 can simultaneously receive the power supply current of the power generation module 15 output by the generator of the power generation module 15, the external power supply current after voltage transformation by the second transformer 148, and the energy storage power supply current after PCS processing output by the energy storage battery 121; then, the parallel cabinet 147 combines and transmits the received one, two, or three paths of current, and then outputs the combined power supply current to each power consumption unit module of the system after voltage transformation by the third transformer 149. For example, a combined power supply current of 690V can be transmitted to the frequency conversion unit 143, and after frequency conversion processing by the frequency conversion unit 143, it is supplied to the motor unit 141 to drive the fracturing pump 18 for fracturing work; another combined power supply current of 380V can be supplied for other auxiliary equipment of the system to use.

[0133] Optionally, if the third transformer 149 is not provided in the fracturing system, the motor unit 141 can be instructed to operate at the same voltage as other auxiliary systems, such as both using a working voltage of 380V or 690V, or an additional transformer corresponding to the working voltage is provided for separate voltage transformation before connecting to the auxiliary system.

[0134] Furthermore, in the power supply principle as Figure 10 shown, the energy storage battery 121 can also be charged using the power generation of the power generation module 15 or the electric energy input from the external power grid. For example, the power generation of the power generation module 15 can be transmitted to the energy storage inverter 123 through the parallel cabinet 147, and then the input current is converted by the energy storage inverter 123, and finally the converted current is transmitted to the energy storage battery 121 for storage; the electric energy input from the external power grid can be processed by unit modules such as the second transformer 148, the parallel cabinet 147, and the energy storage inverter 123, and finally transmitted to the energy storage battery 121 for electric energy storage.

[0135] In one embodiment, the present application provides a fracturing truck, including a first chassis truck 608 and the fracturing system described in any one of the above system embodiments; the fracturing system is arranged on the first chassis truck 608.

[0136] Exemplarily, as Figure 11As shown, the fracturing truck can be provided with compartments such as an energy storage compartment 600 and a frequency conversion compartment 602. Among them, the energy storage compartment 600 is mainly used for storing and managing electric energy. During fracturing operations, the energy storage compartment 600 can supply electric energy to the drive motor unit 141. The interior of the energy storage compartment 600 can include equipment such as battery modules (such as energy storage batteries, battery brackets, etc.), a power management system, an energy storage inverter, and a transformer. It can be understood that in the above embodiments, the energy storage unit of the fracturing system can be separately arranged in the energy storage compartment 600, and the fracturing pump 18 is connected to the power output end of the motor unit 141 through a transmission shaft 606.

[0137] The interior of the frequency conversion compartment 602 can include equipment such as a frequency conversion unit, a rectification unit, and a frequency conversion control unit (such as a control cabinet, a switch cabinet, etc.). The frequency conversion compartment 602 is mainly used for adjusting parameters such as the voltage, current, and frequency of the electric energy output from the energy storage compartment 600 to the voltage, current, and frequency required by the motor unit 141, and then controlling the speed and torque of the motor to achieve control of the displacement and pressure of the liquid discharged by the fracturing pump 18. It can be understood that in the above embodiments, the frequency conversion unit of the fracturing system 10 can be separately arranged in the frequency conversion compartment 602. It should be noted that the energy storage compartment 600 and the frequency conversion compartment 602 can be either separate compartments or the same compartment with different internal spaces divided.

[0138] Optionally, the fracturing system further includes a heat dissipation system 604. The heat dissipation system 604 can be used to provide a heat dissipation function for equipment such as the motor unit 141 and the fracturing pump 18. Optionally, the heat dissipation system 604 can include equipment such as a liquid chiller.

[0139] In some examples, as Figure 12 shown, the fracturing truck can also be provided with a power generation compartment 610, and the power generation compartment 610 can be used to arrange the power generation module of the above fracturing system. Exemplarily, the power generation compartment 610 can drive a generator 155 to generate electricity with the power provided by the chassis vehicle engine 151 to effectively increase the operation duration. It can be understood that the power generation compartment 610, the energy storage compartment 600, and the frequency conversion compartment 602 can be either three separate compartments or the same compartment with different internal spaces divided.

[0140] It should be noted that, as Figure 12 shown, the fracturing truck uses the on-vehicle engine 151 of the first chassis vehicle 608 itself to drive the generator 155 of the power generation module to perform power generation operations, thereby charging the energy storage battery and increasing the fracturing operation time. Optionally, the engine 151 of the chassis vehicle itself can be a gas, fuel, or dual-fuel engine 151. Further, the power generation compartment 610 can also be provided with a heat dissipation fan, which is mainly used for dissipating heat from the generator 155 to prevent it from overheating for a long time.

[0141] In one embodiment, as Figure 13As shown in the figure, the present application provides another fracturing vehicle, which is electrically connected to an energy storage vehicle provided with an energy storage unit; the fracturing vehicle includes a second chassis vehicle 612, a controller, a drive module, and a fracturing pump 18, and the controller, the drive module, and the fracturing pump 18 are arranged on the second chassis vehicle 612;

[0142] The drive module includes a motor unit 141, and the controller is connected to the motor unit 141; the power output end of the motor unit 141 is in transmission connection with the power input end of the fracturing pump 18; the drive module and the controller are also respectively used for being electrically connected to the energy storage unit of the energy storage vehicle;

[0143] Wherein, the controller is used for obtaining a mode selection signal; the mode selection signal is used to represent the working mode of the current fracturing operation; the controller is also used for controlling the energy storage unit to supply power to the motor unit 141 to drive the motor unit 141 to output power to the fracturing pump 18 when it is determined according to the mode selection signal that the working mode is the energy storage power supply mode.

[0144] Exemplarily, as Figure 13 shown, the fracturing vehicle in the embodiment of the present application can be provided with the same frequency conversion cabin 602 as the fracturing vehicle described in the previous embodiment. For the definition of the frequency conversion cabin 602, reference can be specifically made to the definition of the frequency conversion cabin 602 in the previous embodiment, and it will not be elaborated herein in the embodiment of the present application. It can be understood that, compared with the fracturing vehicle in the previous embodiment, in the embodiment of the present application, the energy storage cabin 600 is separately arranged on an energy storage vehicle 700 as Figure 14 shown, and the fracturing vehicle and the energy storage vehicle 700 are connected and powered through a cable with a quick-connect plug. In this way, the embodiment of the present application can effectively reduce the volume of the fracturing vehicle, thereby improving the flexibility of the electric drive fracturing operation, providing more electric energy for the fracturing operation, and effectively extending the fracturing operation time.

[0145] In one embodiment, as Figure 15 shown, the energy storage vehicle 700 further includes a power generation module;

[0146] The power generation module 15 may include an engine, a power take-off, and a generator connected to the controller; the power generation output end of the generator is electrically connected to the energy storage unit and the motor unit of the fracturing vehicle respectively; the power output end of the engine is connected to the power input end of the power take-off, and the power output end of the power take-off is connected to the power input end of the generator.

[0147] It can be understood that in the embodiment of the present application, the power generation module 15 is arranged on the power generation cabin 610 of the energy storage vehicle, and the main structure and function of the power generation cabin 610 are similar to those of the power generation cabin 610 in the fracturing vehicle in the previous embodiment. For the specific definition of the power generation cabin 610 of the energy storage vehicle, reference can be made to the definition of the power generation cabin 610 in the previous embodiment, and it will not be elaborated herein in the embodiment of the present application.

[0148] In this application, by separately arranging the energy storage cabin 600 and / or the power generation cabin 610 on the energy storage vehicle, and connecting the fracturing vehicle to the energy storage vehicle through a cable with a quick-connect plug, the volume of the fracturing vehicle can be effectively reduced, the flexibility of the electric drive fracturing operation can be improved, and more power can be provided for the electric drive fracturing operation, effectively extending the fracturing operation time.

[0149] In an exemplary embodiment, this application also provides a controller, which can be a terminal, and its internal structure diagram can be as Figure 16 shown. The controller includes a processor, a memory, an input / output interface, a communication interface, a display unit, and an input device. Among them, the processor, the memory, and the input / output interface are connected through a system bus, and the communication interface, the display unit, and the input device are connected to the system bus through the input / output interface. Among them, the processor of the controller is used to provide computing and control capabilities. The memory of the controller includes a non-volatile storage medium and an internal memory. The non-volatile storage medium stores an operating system and a computer program. The internal memory provides an environment for the operation of the operating system and the computer program in the non-volatile storage medium. The input / output interface of the controller is used for the processor to exchange information with external devices. The communication interface of the controller is used to communicate with external terminals in a wired or wireless manner, and the wireless manner can be implemented through WIFI, a mobile cellular network, near field communication (NFC), or other technologies. When the computer program is executed by the processor, it realizes a control method for fracturing operations. The display unit of the controller is used to form a visually visible picture, which can be a display screen, a projection device, or a virtual reality imaging device. The display screen can be a liquid crystal display screen or an electronic ink display screen. The input device of the controller can be a touch layer covered on the display screen, or a button, a trackball, or a touchpad set on the controller housing, or an external keyboard, touchpad, or mouse, etc.

[0150] Those skilled in the art can understand that Figure 16 the structure shown in

[0151] is only a block diagram of some structures related to the solution of this application, and does not constitute a limitation on the controller to which the solution of this application is applied. The specific controller may include more or fewer components than those shown in the figure, or combine some components, or have different component arrangements.

[0152] In an embodiment, a computer-readable storage medium is also provided, on which a computer program is stored. When the computer program is executed by a processor, it realizes the steps in the above-mentioned method embodiments.

[0153] In one embodiment, a computer program product is provided, including a computer program which, when executed by a processor, implements the steps in the above-mentioned method embodiments.

[0154] Those of ordinary skill in the art can understand that all or part of the processes in the above-mentioned method embodiments can be completed by instructing relevant hardware through a computer program. The computer program can be stored in a non-volatile computer-readable storage medium. When the computer program is executed, it can include the processes of the above-mentioned method embodiments. Among them, any reference to a memory, database, or other medium used in the embodiments provided in this application can include at least one of non-volatile memory and volatile memory. Non-volatile memory can include Read-Only Memory (ROM), magnetic tape, floppy disk, flash memory, optical memory, high-density embedded non-volatile memory, Resistive Random Access Memory (ReRAM), Magnetoresistive Random Access Memory (MRAM), Ferroelectric Random Access Memory (FRAM), Phase Change Memory (PCM), graphene memory, etc. Volatile memory can include Random Access Memory (RAM) or external cache memory, etc. By way of illustration and not limitation, RAM can be in various forms, such as Static Random Access Memory (SRAM) or Dynamic Random Access Memory (DRAM), etc. The databases involved in the embodiments provided in this application can include at least one of relational databases and non-relational databases. Non-relational databases can include distributed databases based on blockchain, etc., and are not limited thereto. The processors involved in the embodiments provided in this application can be general-purpose processors, central processors, graphics processors, digital signal processors, programmable logic devices, data processing logics based on quantum computing, Artificial Intelligence (AI) processors, etc., and are not limited thereto.

[0155] The technical features of the above embodiments can be combined arbitrarily. For the sake of concise description, not all possible combinations of the technical features in the above embodiments are described. However, as long as there is no contradiction in the combination of these technical features, it should be considered to be within the scope recorded in this application.

[0156] The above-described embodiments merely represent several implementation manners of the present application. The description thereof is relatively specific and detailed, but it should not be construed as a limitation on the patent scope of the present application. It should be noted that for those of ordinary skill in the art, without departing from the concept of the present application, several modifications and improvements can still be made, and these all fall within the protection scope of the present application. Therefore, the protection scope of the present application shall be subject to the appended claims.

Claims

1. A method for controlling a fracturing operation, characterized in that: A controller used in a fracturing system, wherein the fracturing system further comprises an energy storage unit, a driving module and a fracturing pump; the driving module comprises a motor unit electrically connected to the energy storage unit, and the controller is respectively connected to the energy storage unit and the motor unit; The power output end of the motor unit is drivingly connected to the power input end of the fracturing pump; the method comprises: Acquire a mode selection signal; the mode selection signal is used to characterize the working mode of the currently executed fracturing operation; When the working mode is determined to be the energy storage power supply mode according to the mode selection signal, the energy storage unit is controlled to supply power to the motor unit, so as to drive the motor unit to output power to the fracturing pump.

2. The method according to claim 1, characterized in that The method further comprises: When the working mode is determined to be the external power supply mode according to the mode selection signal, the motor unit is controlled to output power to the fracturing pump using the external power supply.

3. The method according to claim 1, characterized in that The fracturing system further comprises a power generation module; the power generation module comprises an engine, a power take-off and a generator connected to the controller; the power generation output end of the generator is electrically connected to the energy storage unit and the motor unit respectively; the power output end of the engine is connected to the power input end of the power take-off, and the power output end of the power take-off is connected to the power input end of the generator; The method further comprises: When the working mode is determined to be the hybrid drive mode according to the mode selection signal, the generator is controlled to obtain power from the engine through the power take-off to perform power generation operations, and the power generation of the generator and the power of the energy storage unit are used to drive the motor unit to output power to the fracturing pump.

4. The method according to claim 3, characterized in that The method further comprises: When the working mode is determined to be the intermittent operation mode according to the mode selection signal, the following steps are performed: When the energy storage unit is fully charged, controlling the energy storage unit and the generator to jointly drive the motor unit to output power to the fracturing pump until the energy storage unit is exhausted; When the power of the energy storage unit is exhausted, the fracturing pump is controlled to stop the fracturing operation, and the generator is enabled to charge the energy storage unit.

5. A control device for fracturing operation, characterized in that: A controller used in a fracturing system, wherein the fracturing system further comprises an energy storage unit, a driving module and a fracturing pump; the driving module comprises a motor unit electrically connected to the energy storage unit, and the controller is respectively connected to the energy storage unit and the motor unit; The power output end of the motor unit is drivingly connected to the power input end of the fracturing pump; the device comprises: A mode selection signal acquisition module, used to acquire a mode selection signal; the mode selection signal is used to characterize the working mode of the currently executed fracturing operation; The energy storage power supply mode execution module is used to control the energy storage unit to supply power to the motor unit so as to drive the motor unit to output power to the fracturing pump when the working mode is determined to be the energy storage power supply mode according to the mode selection signal.

6. A fracturing system, characterized in that: The system includes an energy storage unit, a drive module, a fracturing pump and a controller; The driving module includes a motor unit electrically connected to the energy storage unit, and the controller is respectively connected to the energy storage unit and the motor unit; the power output end of the motor unit is transmission-connected to the power input end of the fracturing pump; The controller is used to obtain a mode selection signal; the mode selection signal is used to represent the working mode of the currently executed fracturing operation; The controller is also used to control the energy storage unit to supply power to the motor unit, so as to drive the motor unit to output power to the fracturing pump, when it is determined that the working mode is the energy storage power supply mode according to the mode selection signal.

7. The system according to claim 6, characterized in that The fracturing system further comprises a power generation module; the power generation module comprises an engine, a power take-off, and a generator connected to the controller; The power output end of the generator is electrically connected to the energy storage unit and the motor unit respectively; the power output end of the engine is connected to the power input end of the power take-off, and the power output end of the power take-off is connected to the power input end of the generator.

8. The system according to claim 7, characterized in that The drive module also includes a frequency conversion unit; the energy storage unit includes an energy storage battery, a power management system and an energy storage converter; The energy storage battery is connected to one end of the energy storage converter; the other end of the energy storage converter is respectively connected to the power generation output end of the power generation module and the power supply end of the motor unit; One end of the frequency conversion unit is connected to the other end of the energy storage converter and the power generation output end of the generator, and the other end of the frequency conversion unit is connected to the power supply end of the motor unit; The power management system is connected to the energy storage battery and the energy storage converter respectively.

9. The system according to claim 8, characterized in that The energy storage unit further includes a first transformer; the driving module further includes a power distribution unit; The first transformer is connected between the other end of the energy storage inverter and one end of the frequency conversion unit; one end of the power distribution unit is used to connect the power output end of the generator and / or the grid line, and the other end of the power distribution unit is connected between the other end of the first transformer and one end of the frequency conversion unit; the power management system is also connected to the first transformer.

10. The system according to claim 8, characterized in that The driving module also includes a parallel cabinet, a second transformer and a third transformer; The first end of the paralleling cabinet is connected to the other end of the energy storage inverter; the second end of the paralleling cabinet is connected to one end of the second transformer, and the other end of the second transformer is used to connect to the external power grid; the third end of the paralleling cabinet is connected to one end of the third transformer, and the other end of the third transformer is connected to one end of the frequency conversion unit; the fourth end of the paralleling cabinet is connected to the power generation output end of the generator.

11. A fracturing truck, characterized in that: It comprises a first chassis vehicle and the fracturing system according to any one of claims 6 to 10; the fracturing system is arranged on the first chassis vehicle.

12. A fracturing truck, characterized in that: The fracturing vehicle is electrically connected to an energy storage vehicle provided with an energy storage unit; the fracturing vehicle comprises a second chassis vehicle, a controller, a drive module and a fracturing pump, and the controller, the drive module and the fracturing pump are arranged on the second chassis vehicle; The driving module includes a motor unit, and the controller is connected to the motor unit; the power output end of the motor unit is transmission-connected to the power input end of the fracturing pump; the driving module and the controller are also respectively used to electrically connect the energy storage unit of the energy storage vehicle; Among them, the controller is used to obtain a mode selection signal; the mode selection signal is used to characterize the working mode of the currently performed fracturing operation; the controller is also used to control the energy storage unit to supply power to the motor unit when it is determined according to the mode selection signal that the working mode is an energy storage power supply mode, so as to drive the motor unit to output power to the fracturing pump.

13. The fracturing truck according to claim 12, characterized in that: The energy storage vehicle also includes a power generation module; The power generation module includes an engine, a power take-off and a generator connected to the controller; the power generation output end of the generator is electrically connected to the energy storage unit and the motor unit of the fracturing vehicle respectively; the power output end of the engine is connected to the power input end of the power take-off, and the power output end of the power take-off is connected to the power input end of the generator.

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