Power supply control method and device for pump truck, pump truck and storage medium

Abstract

The invention discloses a power supply control method and device for a pump truck, the pump truck and a storage medium, the pump truck comprises multiple power supply devices, the multiple power supply devices are connected in parallel and comprise an external power supply device and a range extending power generation device, and the method comprises the steps that external electric power output by the external power supply device is obtained; when the external electric power is smaller than or equal to a preset external electric power threshold value, the current working condition of the pump truck is obtained, and a target working mode of the range extending power generation device is determined according to the current working condition; when the external electric power is greater than a preset external electric power threshold value, determining the total average power consumption of a mounted power utilization device of the pump truck, and determining a target working mode of the range extending power generation device according to the total average power consumption and the external electric power; and controlling the extended range power generation device to work according to the target working mode so as to supply power to the power utilization device. According to the pump truck, the structure that multiple power supply devices are connected in parallel for power supply is adopted, and the requirements for stable power supply and cost saving can be met.

Description

Technical Field

[0001] The present application relates to the technical field of engineering machinery, and in particular to a power supply control method and device for a pump truck, a pump truck, and a storage medium. Background Art

[0002] In the construction industry, pump trucks, with their efficient ability to transport concrete, have become indispensable equipment for infrastructure development. The integrated electrical components for mixing, pumping, and hydraulics require extremely stable and continuous power supply. Currently, pump trucks typically rely on a single external power source or an independent range-extending generator.

[0003] When relying solely on external power supplies, construction sites often face problems such as insufficient power supply and large voltage fluctuations. When the external power grid is overloaded or a line fault occurs, it is very easy to cause power outages in the pump truck, leading to serious consequences such as concrete solidification blocking the pipeline, delaying the construction schedule, and even causing equipment damage and safety accidents. However, the use of independent extended-range power generation devices for power supply has the disadvantages of high fuel consumption, severe noise pollution, and low power generation efficiency. Especially in long-term continuous operation scenarios, the high operating costs and environmental pressures cannot be ignored. Therefore, existing pump truck power supply technology cannot simultaneously meet the needs of stable power supply and cost savings. Summary of the Invention

[0004] The purpose of the embodiments of the present application is to provide a power supply control method, a power supply control device, a pump truck and a machine-readable storage medium for a pump truck, so as to solve the problem that the power supply technology of the pump truck in the prior art cannot simultaneously meet the requirements of stable power supply and cost saving.

[0005] To achieve the above-mentioned objectives, the present application provides, in a first aspect, a power supply control method for a pump truck. The pump truck includes a power-consuming device and multiple power supply devices. The multiple power supply devices are respectively connected to the power-consuming device to supply power to the power-consuming device. The multiple power supply devices are connected in parallel. The multiple power supply devices include an external power supply device and a range-extending power generation device. The power supply control method includes:

[0006] Obtaining external electric power output by an external power supply device;

[0007] When the external power is less than or equal to a preset external power threshold, the current operating condition of the pump truck is obtained, and a target operating mode of the range-extending power generation device is determined according to the current operating condition;

[0008] When the external power is greater than a preset external power threshold, the total average power consumption of the upper-mounted electrical devices of the pump truck is determined, and the target operating mode of the range-extending power generation device is determined according to the total average power consumption and the external power;

[0009] The extended-range power generation device is controlled to operate according to the target operating mode to supply power to the electrical device.

[0010] In an embodiment of the present application, multiple power supply devices also include an energy storage device, the operating conditions of the pump truck include pumping operating conditions and non-pumping operating conditions, the operating mode of the extended-range power generation device includes a high-speed operating mode, and the target operating mode of the extended-range power generation device is determined according to the current operating conditions, including: when the current operating conditions include pumping operating conditions, determining that the target operating mode of the extended-range power generation device is a high-speed operating mode; when the current operating conditions include non-pumping operating conditions but do not include pumping operating conditions, obtaining the remaining power of the energy storage device, and determining the target operating mode based on the remaining power and the first power threshold; when the current operating conditions do not include pumping operating conditions and non-pumping operating conditions, obtaining the remaining power of the energy storage device, and determining the target operating mode based on the remaining power and the second power threshold; wherein the first power threshold is greater than the second power threshold.

[0011] In an embodiment of the present application, the operating mode of the extended-range power generation device also includes a mid-range operating mode and a low-range operating mode. Determining the target operating mode based on the remaining power and the first power threshold includes: when the remaining power is greater than or equal to the first power threshold, determining the target operating mode as the low-range operating mode; when the remaining power is less than the first power threshold, determining the target operating mode as the mid-range operating mode.

[0012] In an embodiment of the present application, the operating mode of the extended-range power generation device also includes a low-gear operating mode and a stop operating mode. Determining the target operating mode based on the remaining power and the second power threshold includes: when the remaining power is less than the second power threshold, determining the target operating mode as the low-gear operating mode; when the remaining power is greater than or equal to the second power threshold, determining the target operating mode as the stop operating mode.

[0013] In an embodiment of the present application, the multiple power supply devices also include an energy storage device, the operating mode of the extended-range power generation device includes a stop operating mode, and the target operating mode of the extended-range power generation device is determined based on the total average power consumption and the external power, including: when the total average power consumption is less than the external power, determining the target operating mode to be the stop operating mode; when the total average power consumption is greater than or equal to the external power, obtaining the remaining power of the energy storage device, and determining the target operating mode based on the remaining power and the third power threshold.

[0014] In an embodiment of the present application, determining the target operating mode based on the remaining power and the third power threshold includes: when the remaining power is greater than the third power threshold, determining the target operating mode to be the stop operating mode; when the remaining power is less than or equal to the third power threshold, determining the power difference between the total average power consumption and the external power, and determining the target operating mode of the extended-range power generation device based on the power difference.

[0015] In an embodiment of the present application, the operating mode of the extended-range power generation device also includes a high-range operating mode, a mid-range operating mode, and a low-range operating mode. Determining the target operating mode of the extended-range power generation device based on the power difference includes: when the power difference is greater than a first power threshold, determining the target operating mode to be the high-range operating mode; when the power difference is less than or equal to the first power threshold and greater than the second power threshold, determining the target operating mode to be the mid-range operating mode; when the power difference is less than or equal to the second power threshold, determining the target operating mode to be the low-range operating mode; wherein the first power threshold is greater than the second power threshold.

[0016] A second aspect of the present application provides a power supply control device for a pump truck, comprising:

[0017] a memory configured to store instructions; and

[0018] The processor is configured to call instructions from the memory and implement the above-mentioned power supply control method for the pump truck when executing the instructions.

[0019] A third aspect of the present application provides a pump truck, comprising:

[0020] electrical devices;

[0021] Multiple power supply devices are respectively connected to the power consumption devices for supplying power to the power consumption devices. The multiple power supply devices are connected in parallel. The multiple power supply devices include an external power supply device and a range-extending power generation device.

[0022] The above-mentioned power supply control device for a pump truck.

[0023] A fourth aspect of the present application provides a machine-readable storage medium, on which a program or instruction is stored. When the program or instruction is executed by a processor, the above-mentioned method for identifying the support status of a leg is implemented.

[0024] In the above technical solution, the pump truck includes multiple power supply devices, which are connected in parallel, including an external power supply device and an extended-range power generation device. During the operation of the pump truck, the corresponding power supply strategy is determined by monitoring the relationship between the external power output by the external power supply device and the preset external power threshold. When the external power is less than or equal to the preset external power threshold, the current operating condition of the pump truck is obtained, and the target operating mode of the extended-range power generation device is determined according to the current operating condition. When the external power is greater than the preset external power threshold, the total average power consumption of the upper-mounted electrical devices of the pump truck is determined, and the target operating mode of the extended-range power generation device is determined according to the total average power consumption and the external power. Finally, the extended-range power generation device is controlled to operate according to the target operating mode to supply power to the electrical devices. The present application can monitor the external power and start the extended-range power generation device according to the operating conditions when it is lower than the threshold to ensure stable power supply. When it is higher than the threshold, its mode is adjusted according to the power consumption to avoid idling, thereby achieving dynamic matching requirements for parallel power supply, which is conducive to taking into account the needs of stable power supply and cost saving.

[0025] 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

[0026] 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 detailed description, they are used to explain the embodiments of the present application but do not constitute a limitation on the embodiments of the present application. In the accompanying drawings:

[0027] Figure 1 A schematic flow chart of a power supply control method for a pump truck provided in an embodiment of the present application;

[0028] Figure 2 This is a structural block diagram of a power supply control device for a pump truck provided in an embodiment of the present application;

[0029] Figure 3 This is a structural block diagram of a pump truck system provided in a specific embodiment of the present application. DETAILED DESCRIPTION

[0030] To make the purpose, technical solutions and advantages of the embodiments of the present application clearer, the technical solutions in the embodiments of the present application will be clearly and completely described below in conjunction with the drawings in the embodiments of the present application. It should be understood that the specific implementation methods described herein are only used to illustrate and explain the embodiments of the present application and are not used to limit the embodiments of the present application. Based on the embodiments in the present application, all other embodiments obtained by ordinary technicians in this field without making creative work are within the scope of protection of this application.

[0031] It should be noted that if the embodiments of the present application involve directional indications (such as up, down, left, right, front, back, etc.), the directional indications are only used to explain the relative position relationship, movement status, etc. between the various components under a certain specific posture (as shown in the accompanying drawings). If the specific posture changes, the directional indications will also change accordingly.

[0032] In addition, if there are descriptions involving "first", "second", etc. in the embodiments of the present application, the descriptions of "first", "second", etc. are only for descriptive purposes and cannot be understood as indicating or implying their relative importance or implicitly indicating the number of the indicated technical features. Therefore, the features defined as "first" and "second" may explicitly or implicitly include at least one of such features. In addition, the technical solutions between the various embodiments can be combined with each other, but they must be based on the fact that they can be implemented by ordinary technicians in this field. When the combination of technical solutions is contradictory or cannot be implemented, it should be deemed that such a combination of technical solutions does not exist and is not within the scope of protection required by this application.

[0033] Traditional pump truck power supply modes mostly rely on a single external power supply or an independent range-extending power generation device. However, a single power supply mode cannot meet the requirements of energy conservation and stability. It is difficult to meet the power demand under complex working conditions and easily causes energy waste. To this end, the embodiment of the present application improves the power supply system of the pump truck. The improved pump truck includes multiple parallel power supply devices, which are respectively connected to the power consumption devices. It can realize independent power supply or simultaneous parallel power supply of multiple power supply devices to meet the power demand of the pump truck in different operating scenarios.

[0034] Specifically, the multiple power supply devices include an external power supply device and a range-extending power generation device. The range-extending power generation device is an independent power generation system. It can be a combination of a range extender and its electronic control, or a range-extending power generation device such as a hydrogen fuel cell. It is used to start power generation when there is no external power supply or insufficient energy storage, directly powering the power-consuming device or charging the energy storage device. It can also work with the external power supply device and the energy storage device to provide power, which can solve the problem of continuous power supply for the pump truck during mobile operation. The external power supply device mainly includes a charging interface and a conversion circuit, which is used to connect to an external fixed power source, such as a construction site power grid and a charging pile. It can replenish power for the system when the pump truck is stationary or has external conditions to reduce fuel consumption, or work with the range-extending power generation device and the energy storage device to power the power-consuming device.

[0035] Preferably, the multiple power supply devices also include an energy storage device, which is usually a large-capacity battery pack or supercapacitor with a bidirectional function of storing and discharging electricity. It can be charged by an extended-range power generation device or an external power supply device, or it can independently supply power to the power consumption device or cooperate with other power supply devices to supply power. It can be understood that in the embodiment of the present application, the energy storage device, the extended-range power generation device and the external power supply device form a parallel power channel, which can supply power to the power consumption device simultaneously or independently without interfering with each other. They can be supplied in parallel in pairs or in parallel in three ways. The surplus power of the extended-range power generation device or the external power supply device can be stored in the energy storage device. In this way, through the parallel architecture of multiple power supply devices, the power supply mode can be automatically switched according to the working conditions, avoiding the limitations of a single power supply, and meeting the power supply needs of the pump truck in different operating scenarios. Whether it is a fixed operation powered by the urban power grid, a mobile operation without power supply in the field, or an emergency operation in an extreme environment, power supply can be guaranteed by a combination of multiple power supplies; and the use of a parallel architecture can ensure that when any power supply fails, the other power supplies can take over seamlessly, avoiding construction delays caused by power interruptions. Therefore, compared with the traditional pump truck power supply system, the multi-power supply device architecture of the present application can solve the power supply problem of the pump truck in different operating scenarios, and is both stable and economical.

[0036] It can be understood that the power consumption of a pump truck has the following characteristics: the power consumption of a pump truck fluctuates greatly in a short period of time, and the power output is not stable; the power of the pumping condition is very large, for example, the pumping power of a four-axle pump truck can reach up to about 200kW; the power of a single boom or leg condition is second, and taking a four-axle pump truck as an example, the maximum will not exceed 60kW; the power of the stirring and cleaning conditions is generally small, and taking the improved pump truck in the embodiment of the present application as an example, the general power consumption will not exceed 8kW. Based on the above characteristics, for the energy management of pump trucks, due to the large fluctuations in power consumption, a simple power following control method is difficult to match the changes in discharge power, and the electrical device is easily damaged due to power fluctuations, and the battery is easily overcharged. In this regard, the embodiment of the present application provides a power supply control method for a pump truck, which is applied to the above-mentioned improved pump truck to improve the stability of energy management.

[0037] Figure 1 This is a flow chart of a power supply control method for a pump truck provided in an embodiment of the present application. Figure 1 As shown, an embodiment of the present application provides a power supply control method for a pump truck, which includes an electric device and multiple power supply devices. The multiple power supply devices are respectively connected to the electric device for supplying power to the electric device. The multiple power supply devices are connected in parallel, and the multiple power supply devices include an external power supply device and an extended-range power generation device. The power supply control method may include the following steps.

[0038] Step 101: Obtain external electrical power output by an external power supply device.

[0039] Step 102 : When the external electric power is less than or equal to a preset external electric power threshold, the current operating condition of the pump truck is obtained, and a target operating mode of the range-extending power generation device is determined according to the current operating condition.

[0040] Step 103 : when the external power is greater than a preset external power threshold, determine the total average power consumption of the upper mounted electrical devices of the pump truck, and determine the target operating mode of the range-extending power generation device according to the total average power consumption and the external power.

[0041] Step 104 : Control the range-extended power generation device to operate according to the target operating mode to supply power to the power-consuming device.

[0042] It can be understood that the external electric power refers to the actual output power of the external power supply device, which can be obtained through the power taking device. In the embodiment of the present application, the extended-range power generation device includes multiple working gears, and the power output range of different working gears is calibrated in advance based on experimental data. The processor can determine whether there is external electricity or whether the external power supply is sufficient by monitoring the external electric power in real time, and then determine the target working mode of the extended-range power generation device in combination with the operating conditions of the pump truck or the power consumption of the electrical device installed on the pump truck to prevent damage to the electrical device due to power fluctuations and reduce the risk of high power generation impacting the battery. In one example, the working modes of the extended-range power generation device may include a high-speed working mode, a mid-speed working mode, a low-speed working mode, and a stop working mode.

[0043] Specifically, in the embodiment of the present application, the preset external power threshold can be 0 or a minimum value, which is used to determine whether the system has external power. After obtaining the external power output by the external power supply device, the external power can be compared with the preset external power threshold.

[0044] In one example, if the external power is less than or equal to a preset external power threshold, it means that the external power supply device is not connected to the mains or industrial power, the system has no external power, and the pump truck can only charge the energy storage device or drive the motor through the extended-range power generation device, or supply power by connecting the extended-range power generation device and the energy storage device in parallel. At this time, the processor can obtain the current operating conditions of the pump truck and determine the target operating mode of the extended-range power generation device based on the current operating conditions. Among them, the current operating conditions can include pumping operating conditions and non-pumping operating conditions. Pumping operating conditions mainly refer to conditions with high power requirements, such as pumping conditions for transporting materials such as concrete through pipelines at high pressure to a designated construction location. Non-pumping operating conditions mainly refer to conditions with low power requirements, including outrigger conditions and boom conditions. Outrigger conditions include deploying or retracting outriggers to stabilize the vehicle body and ensure mechanical smoothness during pumping; boom conditions include controlling the extension and rotation of the distribution boom to adjust the concrete distribution position.

[0045] In another example, if the external power is greater than a preset external power threshold, it indicates that the external power supply device is connected to the mains or industrial power, and the system has external power. In this case, the pump truck can directly power the pump truck or charge the energy storage device through the range-extending generator, or the external power supply device, the range-extending generator, and the energy storage device can all power the pump truck simultaneously. The processor must first determine the total average power consumption of the pump truck's upper electrical devices and determine the target operating mode of the range-extending generator based on the total average power consumption and the external power.

[0046] Finally, the processor can control the operation of the extended-range power generation device according to the target operating mode of the extended-range power generation device to realize power supply to the power consumption device. Preferably, a PID control algorithm can be used to achieve smooth power switching to avoid the impact of voltage fluctuations on the power consumption device.

[0047] In the above technical solution, the pump truck includes multiple power supply devices, which are connected in parallel, including an external power supply device and an extended-range power generation device. During the operation of the pump truck, the corresponding power supply strategy is determined by monitoring the relationship between the external power output by the external power supply device and the preset external power threshold. When the external power is less than or equal to the preset external power threshold, the current operating condition of the pump truck is obtained, and the target operating mode of the extended-range power generation device is determined according to the current operating condition. When the external power is greater than the preset external power threshold, the total average power consumption of the upper-mounted electrical devices of the pump truck is determined, and the target operating mode of the extended-range power generation device is determined according to the total average power consumption and the external power. Finally, the extended-range power generation device is controlled to operate according to the target operating mode to supply power to the electrical devices. The present application can monitor the external power and start the extended-range power generation device according to the operating conditions when it is lower than the threshold to ensure stable power supply. When it is higher than the threshold, its mode is adjusted according to the power consumption to avoid idling, thereby achieving dynamic matching requirements for parallel power supply, which is conducive to taking into account the needs of stable power supply and cost saving.

[0048] In an embodiment of the present application, multiple power supply devices also include an energy storage device, the operating conditions of the pump truck include pumping operating conditions and non-pumping operating conditions, the operating mode of the extended-range power generation device includes a high-speed operating mode, and the target operating mode of the extended-range power generation device is determined according to the current operating conditions. It may include: when the current operating conditions include pumping operating conditions, determining that the target operating mode of the extended-range power generation device is a high-speed operating mode; when the current operating conditions include non-pumping operating conditions but do not include pumping operating conditions, obtaining the remaining power of the energy storage device, and determining the target operating mode based on the remaining power and the first power threshold; when the current operating conditions do not include pumping operating conditions and non-pumping operating conditions, obtaining the remaining power of the energy storage device, and determining the target operating mode based on the remaining power and the second power threshold; wherein the first power threshold is greater than the second power threshold.

[0049] It is understood that multiple power supply devices also include energy storage devices, which are typically large-capacity battery packs or supercapacitors with bidirectional storage and discharge capabilities. These energy storage devices can be charged via a range-extending generator or an external power supply, and can independently power power consumption devices or collaborate with other power supply devices. Pumping operations primarily refer to conditions with high power requirements, such as pumping operations used to transport materials such as concrete through pipelines at high pressure to a designated construction location. Non-pumping operations primarily refer to conditions with lower power requirements, including outrigger and boom operations. Outrigger operations involve deploying or retracting the outriggers to stabilize the vehicle body and ensure smooth mechanical operation during pumping. Boom operations involve controlling the extension and rotation of the concrete distribution boom to adjust the concrete distribution position. The power threshold is the power value used as a judgment standard. The first and second power thresholds are reference values ​​used to measure the remaining power state of the energy storage device, enabling the system to make different decisions. The first power threshold is greater than the second power threshold. Both can be calibrated using experimental data.

[0050] Furthermore, in the absence of external power, if the current operating conditions include pumping operations, the system has a greater energy demand, so the extended-range power generation device can be directly set to work in a high-speed position to generate electricity at full power to ensure continuous and stable operation of the pump truck and avoid affecting the construction progress due to insufficient power.

[0051] Furthermore, in the absence of external power, if the current operating conditions do not include pumping operating conditions but include non-pumping operating conditions, that is, the pump truck has not started pumping and is not transporting materials, but has turned on the legs and / or arms, then the remaining power of the energy storage device can be obtained first, and the target operating mode can be determined based on the relationship between the remaining power and the first power threshold.

[0052] In an embodiment of the present application, the operating mode of the extended-range power generation device may also include a mid-range operating mode and a low-range operating mode. Determining the target operating mode based on the remaining power and the first power threshold may include: when the remaining power is greater than or equal to the first power threshold, determining the target operating mode to be the low-range operating mode; when the remaining power is less than the first power threshold, determining the target operating mode to be the mid-range operating mode.

[0053] Specifically, if the remaining power of the energy storage device is greater than or equal to the first power threshold, it means that the remaining power is sufficient, and the system can give priority to using the energy storage device for power supply, and set the extended-range power generation device to work in a low gear to reduce the operation of the extended-range power generation device, reduce noise, fuel consumption and equipment wear; if the remaining power is lower than the first power threshold, it means that the remaining power is completely insufficient to support the boom or outrigger working conditions. At this time, the extended-range power generation device is set to work in a medium gear, and the extended-range power generation device is used for power supply in priority. When there is surplus energy output by the extended-range power generation device, the energy storage device is charged to meet the needs of the pump truck.

[0054] Furthermore, in the absence of external power, if the current operating conditions include neither pumping operating conditions nor non-pumping operating conditions, that is, the pump truck has not turned on pumping, outriggers and booms, it means that at this time only the low-power consumption mode required for basic operation of the equipment needs to be maintained. At this time, the remaining power of the energy storage device can be obtained first, and the target operating mode of the extended-range power generation device can be determined based on the relationship between the remaining power and the second power threshold.

[0055] In an embodiment of the present application, the operating mode of the extended-range power generation device may also include a low-gear operating mode and a stop operating mode. Determining the target operating mode based on the remaining power and the second power threshold may include: when the remaining power is less than the second power threshold, determining the target operating mode to be the low-gear operating mode; when the remaining power is greater than or equal to the second power threshold, determining the target operating mode to be the stop operating mode.

[0056] Specifically, if the remaining charge of the energy storage device is less than the second charge threshold, it indicates that the remaining charge of the energy storage device is too low to maintain the energy consumption required for the basic operation of the pump truck. In this case, the range-extended generator can be set to operate in a low gear. The intervention of the range-extended generator ensures the normal operation of the key functions of the pump truck and avoids malfunctions due to power exhaustion. At the same time, the range-extended generator operates in a low gear to charge the energy storage device, which can prevent the risk of overcharging. If the remaining charge of the energy storage device is greater than or equal to the second charge threshold, it indicates that the remaining charge of the energy storage device is sufficient to maintain the low-power mode required for basic operation of the equipment. There is no need for the range-extended generator to intervene, thereby reducing the operation of the range-extended generator and reducing noise, fuel consumption and equipment wear.

[0057] This allows the range-extending generator to operate optimally based on the pump truck's operating conditions and the remaining charge in the energy storage device, avoiding unnecessary high-power operation, reducing fuel consumption, lowering operating costs, and reducing exhaust emissions, resulting in a more environmentally friendly solution. Furthermore, a stable power supply is ensured under various operating conditions. Even in complex or unusual operating conditions, rational energy management allows for sustained equipment operation, meeting diverse operational needs.

[0058] In an embodiment of the present application, multiple power supply devices may further include an energy storage device, and the operating mode of the extended-range power generation device may include a stop operating mode. Determining the target operating mode of the extended-range power generation device based on the total average power consumption and the external power may include: when the total average power consumption is less than the external power, determining the target operating mode to be the stop operating mode; when the total average power consumption is greater than or equal to the external power, obtaining the remaining power of the energy storage device, and determining the target operating mode based on the remaining power and the third power threshold.

[0059] It can be understood that when there is an external power supply, that is, the external power supply device is connected to the mains or industrial electricity, the external power supply can be used preferentially under the premise of ensuring stable power supply to the power-consuming device. Specifically, the total average power consumption of the power-consuming device installed on the pump truck is first obtained. The total average power consumption refers to the sum of the average power consumption of all the mounted motors. In one example, for any mounted motor, n sampling points of the motor power can be taken within a period of time, and the power of the sampling points can be added and divided by the number of samples to obtain the average power consumption. For pumping conditions, a period of time can be one or more cycle pumping times, that is, the time it takes for the cylinder to complete one push and suction of materials. For other conditions, a period of time can be a preset time determined according to actual conditions.

[0060] Specifically, if the total average power consumption is less than the external power, the external power source is sufficient to meet the pump truck's current electricity needs. In this case, the pump truck can directly draw power from the external power source without activating the range-extending generator. This means the range-extending generator's target operating mode is set to stop, with the external power source operating independently and simultaneously charging the energy storage device. This allows the pump truck to fully utilize the low-cost external power source, eliminating fuel consumption for the range-extending generator, saving system costs. The energy storage device can also absorb excess power, improving grid adaptability.

[0061] If the total average power consumption is greater than or equal to the external power, the external power supply is insufficient to meet system requirements. In this case, the remaining power of the energy storage device can be obtained first, and the target operating mode can be determined based on the remaining power and the third power threshold. The third power threshold is a reference value used to measure the remaining power state of the energy storage device and can be calibrated through experiments.

[0062] In an embodiment of the present application, determining the target operating mode based on the remaining power and the third power threshold may include: when the remaining power is greater than the third power threshold, determining the target operating mode to be the stop operating mode; when the remaining power is less than or equal to the third power threshold, determining the power difference between the total average power consumption and the external power, and determining the target operating mode of the extended-range power generation device based on the power difference.

[0063] Specifically, if the remaining charge is greater than a third charge threshold, the remaining charge of the energy storage device is sufficient to meet the remaining power demand, the target operating mode of the range-extended power generation device remains in the shutdown mode, and the system uses the external power supply and the energy storage device in parallel for power supply. If the remaining charge is less than or equal to the third charge threshold, the remaining charge of the energy storage device is insufficient to meet the remaining power demand, and the range-extended power generation device is required to participate in collaborative power supply. The processor can determine the power difference between the total average power consumption and the external power, and determine the target operating mode of the range-extended power generation device based on the power difference.

[0064] In an embodiment of the present application, the operating mode of the extended-range power generation device may further include a high-range operating mode, a mid-range operating mode, and a low-range operating mode. Determining the target operating mode of the extended-range power generation device based on the power difference includes: when the power difference is greater than a first power threshold, determining the target operating mode to be the high-range operating mode; when the power difference is less than or equal to the first power threshold and greater than the second power threshold, determining the target operating mode to be the mid-range operating mode; when the power difference is less than or equal to the second power threshold, determining the target operating mode to be the low-range operating mode; wherein the first power threshold is greater than the second power threshold.

[0065] It can be understood that the power thresholds are power values ​​used as a judgment standard. The first power threshold is the threshold for the range-extended generator to activate the high-gear operating mode, and the second power threshold is the threshold for the range-extended generator to activate the mid-gear operating mode. The first power threshold is greater than the second power threshold, and both can be calibrated through experiments. Specifically, the processor can match the target operating mode of the range-extended generator based on the relationship between the power difference and the first and second power thresholds.

[0066] The range-extended generator's high-speed operating mode preferably corresponds to the engine's high load range, while the mid-speed operating mode matches the engine's economical speed, thereby reducing fuel consumption. Furthermore, the minimum power in the low-speed operating mode should be ≥ 20% of the rated power to prevent the engine from idling or operating at excessively low loads.

[0067] In summary, the multi-gear control strategy of the extended-range power generation device achieves refined energy management of pump trucks through the triple mechanisms of power difference stratification, energy efficiency priority matching, and battery dynamic protection, and can ensure stable energy supply.

[0068] Figure 2 This is a structural block diagram of a power supply control device for a pump truck provided in an embodiment of the present application. Figure 2 As shown, an embodiment of the present application provides a power supply control device for a pump truck, which may include:

[0069] Memory 210 configured to store instructions; and

[0070] The processor 220 is configured to call instructions from the memory 210 and implement the power supply control method for the pump truck in the above embodiment when executing the instructions.

[0071] The present application also provides a pump truck, which includes:

[0072] electrical devices;

[0073] Multiple power supply devices are respectively connected to the power consumption devices for supplying power to the power consumption devices. The multiple power supply devices are connected in parallel. The multiple power supply devices include an external power supply device and a range-extending power generation device.

[0074] The power supply control device for a pump truck in the above embodiment.

[0075] In one example, a pump truck utilizes a dual-motor distributed drive architecture, comprising a main pump motor and an auxiliary pump motor. The main pump motor drives the main pump, while the auxiliary pump motor drives the constant pressure pump, boom pump, and gear pump. The boom, outriggers, mixing, and cleaning operations are driven independently by the auxiliary pump motor, eliminating the need for the main pump motor. This reduces unnecessary energy consumption and improves system efficiency. During pumping operations, both the main pump motor and the auxiliary motor operate simultaneously, providing ample power.

[0076] Figure 3 This is a structural block diagram of a pump truck system provided in a specific embodiment of the present application. Figure 3 As shown, the system includes multiple power supply units, namely, an external power supply unit composed of 380V industrial power and OBC, a range extender power generation unit composed of a range extender and a range extender electronic control, and an energy storage unit composed of a power battery and a fast charging socket. The above power supply units are connected to the power distribution device, and the output power is coordinated and distributed to the power-consuming part of the pump truck through the power distribution device. The power-consuming part includes a main pump unit, an auxiliary pump unit, a drive unit, a DCDC (DC-DC converter) and an air conditioner. Among them, the main pump unit includes a main pump motor electronic control, a main pump motor and a main pump; the auxiliary pump unit includes an auxiliary pump motor electronic control, an auxiliary pump motor, a constant pressure pump, a boom pump and a gear pump; the drive unit includes a drive motor electronic control, a drive motor, a gearbox and a drive shaft; DCDC is used to convert high voltage electricity into 24V low voltage electricity to charge the low voltage battery or drive the low voltage electrical work, and the air conditioner is used to convert high voltage electrical energy into heat energy to cool or heat the cab. Among them, the connection relationship between each component is as follows Figure 3 In addition, the pump truck also includes a control system, which is responsible for the management of the vehicle mode and the control of specific action execution.

[0077] It is understandable that when a traditional pump truck is operating or driving, the engine is mechanically connected to the pump group or the drive shaft, resulting in the operation of the traditional pump truck engine being affected by the load (load fluctuations, engine operating point fluctuations). The pump truck in the embodiment of the present application adopts an extended-range hybrid architecture. When the extended-range pump truck is operating or driving, the engine can generate electricity at a fixed point, and the working area is stable. In addition, the traditional pump truck engine is directly involved in driving the pump group, and the engine start and stop are strongly related to the working conditions; while the extended-range pump truck of the present application is driven by an electric motor when the upper part is working, and the engine only provides electricity and can be started and stopped at any time. The engine start and stop are more flexible, and the implementation of the start-stop policy can be considered according to energy-saving needs.

[0078] The present application also provides a machine-readable storage medium, on which a program or instruction is stored. When the program or instruction is executed by a processor, the method for identifying the support status of a leg in the above embodiment is implemented.

[0079] Those skilled in the art will appreciate that the embodiments of the present application can be provided as methods, systems or computer program products. Therefore, the present application can adopt the form of a complete hardware embodiment, a complete software embodiment, or an embodiment in combination with software and hardware. Moreover, the present application can adopt the form of a computer program product implemented on one or more computer-usable storage media (including but not limited to magnetic disk storage, CD-ROM, optical storage, etc.) that contain computer-usable program code.

[0080] The present application is described with reference to the flowcharts and / or block diagrams of the methods, devices (systems) and computer program products according to the embodiments of the present application. It should be understood that each process and / or box in the flowchart and / or block diagram, as well as the combination of the processes and / or boxes in the flowchart and / or block diagram, can be implemented by computer program instructions. These computer program instructions can be provided to a processor of a general-purpose computer, a special-purpose computer, an embedded processor or other programmable data processing device to produce a machine, so that the instructions executed by the processor of the computer or other programmable data processing device generate instructions for implementing the processes in the flowchart and / or block diagram. Figure 1 a process or multiple processes and / or boxes Figure 1 A device that provides the functions specified in a block or multiple blocks.

[0081] These computer program instructions may also be stored in a computer readable memory that can direct a computer or other programmable data processing device to work in a specific manner, so that the instructions stored in the computer readable memory produce an article of manufacture comprising an instruction device, which implements the process Figure 1a process or multiple processes and / or boxes Figure 1 The function specified in one or more boxes.

[0082] These computer program instructions can also be loaded onto a computer or other programmable data processing device so that a series of operating steps are executed on the computer or other programmable device to produce a computer-implemented process, thereby providing the instructions executed on the computer or other programmable device for implementing the process. Figure 1 a process or multiple processes and / or boxes Figure 1 The steps for the function specified in one or more boxes.

[0083] In a typical configuration, a computing device includes one or more processors (CPUs), input / output interfaces, network interfaces, and memory.

[0084] The memory may include non-permanent memory in a computer-readable medium, random access memory (RAM) and / or non-volatile memory in the form of read-only memory (ROM) or flash RAM. The memory is an example of a computer-readable medium.

[0085] Computer-readable media includes permanent and non-permanent, removable and non-removable media that can be implemented by any method or technology to store information. The information can be computer-readable instructions, data structures, program modules or other data. Examples of computer storage media include, but are not limited to, phase change memory (PRAM), static random access memory (SRAM), dynamic random access memory (DRAM), other types of random access memory (RAM), read-only memory (ROM), electrically erasable programmable read-only memory (EEPROM), flash memory or other memory technology, compact disc read-only memory (CD-ROM), digital versatile disc (DVD) or other optical storage, magnetic cassettes, magnetic disk storage or other magnetic storage devices or any other non-transmission media that can be used to store information that can be accessed by a computing device. As defined herein, computer-readable media does not include transitory computer-readable media (transitory media), such as modulated data signals and carrier waves.

[0086] It should also be noted that the terms "comprises," "includes," or any other variations thereof are intended to encompass non-exclusive inclusion, such that a process, method, commodity, or apparatus that includes a series of elements includes not only those elements but also other elements not explicitly listed, or includes elements inherent to such process, method, commodity, or apparatus. In the absence of further limitations, an element defined by the phrase "comprises a ..." does not exclude the presence of other identical elements in the process, method, commodity, or apparatus that includes the element.

[0087] The above are merely embodiments of the present application and are not intended to limit the present application. For those skilled in the art, the present application may have various changes and variations. Any modifications, equivalent replacements, improvements, etc. made within the spirit and principles of the present application should all be included within the scope of the claims of the present application.

Claims

1. A power supply control method for a pump truck, characterized in that: The pump truck includes an electric device and multiple power supply devices, the multiple power supply devices are respectively connected to the electric device for supplying power to the electric device, the multiple power supply devices are connected in parallel, and the multiple power supply devices include an external power supply device and a range-extending power generation device. The power supply control method includes: Obtaining external electric power output by the external power supply device; When the external electric power is less than or equal to a preset external electric power threshold, obtaining the current operating condition of the pump truck, and determining the target operating mode of the range-extending power generation device according to the current operating condition; When the external power is greater than the preset external power threshold, determining the total average power consumption of the upper-mounted electrical devices of the pump truck, and determining the target operating mode of the range-extending power generation device according to the total average power consumption and the external power; The extended-range power generation device is controlled to operate according to the target operating mode to supply power to the power-consuming device.

2. The power supply control method according to claim 1, wherein: The multiple power supply devices further include an energy storage device, the operating conditions of the pump truck include a pumping operating condition and a non-pumping operating condition, the operating mode of the range-extending power generation device includes a high-speed operating mode, and determining a target operating mode of the range-extending power generation device based on the current operating condition includes: When the current operating condition includes a pumping operating condition, determining that the target operating mode of the extended-range power generation device is the high-speed operating mode; When the current operating condition includes a non-pumping operating condition but does not include a pumping operating condition, obtaining a remaining power of the energy storage device, and determining the target operating mode according to the remaining power and a first power threshold; When the current operating condition does not include the pumping operating condition and the non-pumping operating condition, obtaining a remaining power of the energy storage device, and determining the target operating mode according to the remaining power and a second power threshold; The first power threshold is greater than the second power threshold.

3. The power supply control method according to claim 2, wherein: The operating mode of the extended-range power generation device further includes a mid-range operating mode and a low-range operating mode, and determining the target operating mode according to the remaining power and the first power threshold includes: When the remaining power is greater than or equal to the first power threshold, determining that the target operating mode is the low-gear operating mode; When the remaining power is less than the first power threshold, the target operating mode is determined to be the mid-range operating mode.

4. The power supply control method according to claim 2, wherein: The operating mode of the extended-range power generation device further includes a low-gear operating mode and a stop operating mode, and determining the target operating mode according to the remaining power and the second power threshold includes: When the remaining power is less than the second power threshold, determining the target operating mode to be the low-gear operating mode; When the remaining power is greater than or equal to the second power threshold, the target operating mode is determined to be the stop operating mode.

5. The power supply control method according to claim 1, wherein: The multiple power supply devices further include an energy storage device, the operating mode of the range-extended power generation device includes a stop operating mode, and determining a target operating mode of the range-extended power generation device according to the total average power consumption and the external power includes: When the total average power consumption is less than the external power, determining the target working mode to be the stop working mode; When the total average power consumption is greater than or equal to the external power, the remaining power of the energy storage device is obtained, and the target operating mode is determined according to the remaining power and a third power threshold.

6. The power supply control method according to claim 5, wherein: Determining the target operating mode according to the remaining power and a third power threshold includes: When the remaining power is greater than the third power threshold, determining the target operating mode to be the stop operating mode; When the remaining power is less than or equal to the third power threshold, a power difference between the total average power consumption and the external power is determined, and a target operating mode of the range-extended power generation device is determined according to the power difference.

7. The power supply control method according to claim 6, wherein: The operating modes of the extended-range power generation device further include a high-range operating mode, a mid-range operating mode, and a low-range operating mode. The determining of the target operating mode of the extended-range power generation device according to the power difference includes: When the power difference is greater than a first power threshold, determining that the target operating mode is the high-speed operating mode; When the power difference is less than or equal to the first power threshold and greater than a second power threshold, determining that the target operating mode is the mid-range operating mode; When the power difference is less than or equal to the second power threshold, determining that the target operating mode is the low-gear operating mode; The first power threshold is greater than the second power threshold.

8. A power supply control device for a pump truck, characterized in that: include: a memory configured to store instructions; as well as The processor is configured to call the instruction from the memory and implement the power supply control method for the pump truck according to any one of claims 1 to 7 when executing the instruction.

9. A pump truck, characterized in that: The pump truck comprises: electrical devices; a plurality of power supply devices, each connected to the power-consuming device and configured to supply power to the power-consuming device; the plurality of power supply devices being connected in parallel, and comprising an external power supply device and a range-extending power generation device; The power supply control device for a pump truck according to claim 8.

10. A machine-readable storage medium storing a program or instruction, characterized in that: When the program or the instruction is executed by a processor, the power supply control method for a pump truck according to any one of claims 1 to 7 is implemented.

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