Electric shovel operation mode control method, system, and electric shovel

Abstract

The present application provides an electric shovel operation mode control method, a system, and an electric shovel. The electric shovel operation mode control method includes the steps of: starting a power supply module connected to an AC power supply of the electric shovel when it is determined that a trigger signal for a wired operation mode of the electric shovel has been received, and acquiring a required power of a drive system of the electric shovel; and controlling both a power battery pack and the power supply module of the electric shovel to simultaneously supply power to the drive system when it is determined that the required power is equal to or greater than the power supply of the power supply module. The method enables both the power supply module and the power battery pack to simultaneously supply power to the drive system, always meeting the required power of the drive system of the electric shovel, ensuring continuous normal operation of the electric shovel, and improving the operation efficiency of the electric shovel.

Description

[Technical field]

[0001] [CROSS REFERENCE TO RELATED APPLICATIONS] This application claims priority to a Chinese patent application filed on March 31, 2021, bearing application number 202110349017.8 and entitled "Electric excavator operating mode control method, system, and electric excavator," the entire contents of which are incorporated herein by reference.

[0002] [Technical field] The present application relates to the technical field of work machine control, and in particular to an electric shovel operation mode control method, system, and electric shovel. [Background technology]

[0003] the current , pure The stylish electric excavator is still in the research and development stage, and most of the triple electric control technologies such as motor, electronic control, and power battery are used by mature new energy vehicle technologies, but the environment in which the excavator is used is very different from that of new energy vehicles. The working area of ​​the excavator is mostly fixed, which is very suitable for wired operation mode, while new energy vehicles are highly mobile and not suitable for wired operation mode.

[0004] For an electric shovel, its operating modes may typically include a wired operating mode and a battery discharging mode. Exemplary In the art, when controlling the working mode of an electric shovel, it is usually necessary to operate a wired working mode and a battery discharging mode separately, and to replenish power to the power battery pack of the electric shovel through a separate charging mode.

[0005] The above control method is suitable for small electric excavators with low power. However, for medium to large electric excavators, in the wired operation mode, the power supply power cannot meet the power requirements of the drive system of the electric excavator, so that the electric excavator cannot operate normally and the digging efficiency of the electric excavator may be reduced. Summary of the Invention [Problem to be solved by the invention]

[0006] The present application provides an electric shovel operation mode control method, system, and electric shovel that solve the defect in the prior art that the power of the power source cannot meet the power requirements of the drive system of the electric shovel in the wired operation mode, and realizes that both the power source and the power battery pack can simultaneously supply power to the drive system. [Means for solving the problem]

[0007] When it is determined that a trigger signal for a wired operation mode of the electric shovel is received, Electricity activating a power source module to obtain the required power for the drive system of the electric shovel; the power supply module is connected to an AC power supply; and, and when it is determined that the required power is equal to or greater than the supply power of the power supply module, controlling so that both the power battery pack of the electric shovel and the power supply module simultaneously supply power to the drive system.

[0008] The electric shovel operation mode control method according to the present application further includes a step of controlling the power battery pack to supply power to the drive system when it is determined that the trigger signal has not been received.

[0009] According to the electric shovel operation mode control method of the present application, when it is determined that the trigger signal has not been received, acquiring battery remaining charge state information of the power battery pack in real time; The method further includes a step of starting up the power supply module upon receiving the trigger signal and charging the power battery pack with the power supply module when the battery remaining capacity status information determines that the remaining capacity is lower than a remaining capacity threshold.

[0010] According to the electric shovel operation mode control method according to the present application, after the step of obtaining the required power of the drive system of the electric shovel, When it is determined that the required power is smaller than the supplied power, controlling the power supply module to supply power to the drive system, and acquiring battery remaining capacity status information of a power battery pack of the electric shovel in real time; The method further includes controlling the power supply module to charge the power battery pack based on the battery remaining capacity status information.

[0011] According to the electric shovel operation mode control method of the present application, before the step of starting up the power supply module of the electric shovel, receiving a low-voltage power-on instruction for the electric shovel and automatically turning on the low-voltage power; The method further includes a step of receiving a high-voltage power-on instruction for the electric shovel after the low-voltage power-on is completed, and controlling the power supply module, the power battery pack of the electric shovel, and the driving system of the electric shovel to connect them two by two according to the high-voltage power-on instruction, thereby turning on the high-voltage power.

[0012] The present application also provides: When it is determined that a trigger signal for a wired operation mode of the electric shovel is received, the electric shovel Electricity A start-up module that starts the power source module and obtains the power required for the drive system of the electric shovel. a start-up module, the power supply module being connected to an AC power source; and, and a control module that, when it is determined that the required power is equal to or greater than the supply power of the power supply module, controls both the power battery pack of the electric shovel and the power supply module to simultaneously supply power to the drive system.

[0013] The present application also provides an electric shovel operation mode controller, a power module and a drive system for the electric shovel, a first relay is connected between the power supply module and the drive system, and a second relay is connected between the power supply module and a power battery pack of an electric shovel; The electric shovel operation mode controller is electrically connected to the first relay and the second relay, and the electric shovel operation mode controller controls and turns on the first relay and the second relay, thereby powering on the electric shovel. An electric shovel operation mode control system is provided.

[0014] According to the electric shovel operation mode control system of the present application, the electric shovel operation mode controller, the power supply module, the drive system and the power battery pack are connected via a CAN bus.

[0015] The present application also provides an electric shovel, including the above electric shovel operation mode control system for controlling an operation mode of the electric shovel.

[0016] The present application also provides an electronic device including a memory, a processor, and a computer program stored in the memory and executable on the processor, the processor executing the computer program to realize steps of the electric excavator operation mode control method described in any one of the above items.

[0017] The present application also provides a non-transitory computer-readable storage medium having stored thereon a computer program that, when executed by a processor, realizes the steps of the electric shovel operation mode control method described in any one of the above claims. Effect of the Invention

[0018] The technical effects of the electric shovel operation mode control method, system, and electric shovel according to the present application are as follows.

[0019] In the electric shovel operation mode control method, system, and electric shovel according to the present application, a power supply module of the electric shovel is started by determining whether or not a trigger signal for a wired operation mode of the electric shovel is received, and the power required for the drive system of the electric shovel at this time is obtained, and if the required power exceeds the power supplied by the power supply module, both the power supply module and the power battery pack of the electric shovel supply power to the drive system simultaneously. This ensures that the power required for the drive system of the electric shovel is always met, allowing the electric shovel to operate normally and improve the operating efficiency of the electric shovel, and also, since both the power battery pack and the power supply module supply power to the electric shovel simultaneously, the amount of power supplied by the power battery pack is reduced, thereby reducing costs. In order to more clearly describe the technical solutions of the present application or the prior art, the drawings necessary for the description of the embodiments or the prior art will be briefly described below. However, the drawings described below are only a part of the embodiments of the present application, and it is obvious that a person skilled in the art can obtain other drawings based on these drawings without requiring creative efforts. [Brief description of the drawings]

[0020] [Figure 1] 1 is a schematic flow diagram of an electric shovel operation mode control method according to an embodiment of the present application. [Diagram 2] 2 is a detailed flow diagram of a method for controlling an operation mode of an electric shovel according to an embodiment of the present application; [Diagram 3] FIG. 2 is a structural schematic diagram of an electric shovel operation mode controller according to an embodiment of the present application. [Figure 4] 1 is a structural schematic diagram of an electric shovel operation mode control system according to an embodiment of the present application; [Diagram 5] FIG. 2 is a CAN network diagram of the electric excavator operation mode control system according to an embodiment of the present application. [Figure 6] 1 is a schematic diagram illustrating the structure of an electronic device according to the present application. DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS

[0021] In order to make the objectives, technical solutions and advantages of the present application clearer, the technical solutions of the present application will be described clearly and completely below with reference to the drawings of the present application, and it is clear that the described embodiments are only a part of the embodiments of the present application, and are not all of the embodiments. All other embodiments that a person skilled in the art can obtain based on the embodiments of the present application without requiring creative efforts belong to the patent scope of the present application.

[0022] In the case of a medium- to large-sized electric shovel, in the wired operation mode, the power supply power may not be sufficient for the power required for the drive system of the electric shovel, and the electric shovel may not operate normally, resulting in a decrease in the excavation efficiency of the electric shovel. Therefore, in order to avoid the above, the present application provides a method for controlling the operation mode of an electric shovel.

[0023] FIG. 1 is a schematic flow diagram of an electric shovel operation mode control method according to an embodiment of the present application. As shown in FIG. 1, the method includes the following steps S1 and S2. S1: When it is determined that a trigger signal for the wired operation mode of the electric shovel is received, the electric shovel Electricity Activate the power supply module to obtain the power required for the drive system of the electric shovel. The power supply module is connected to an AC power supply. . S2: If it is determined that the required power is equal to or greater than the power supply of the power supply module, control is performed so that both the power battery pack of the electric shovel and the power supply module simultaneously supply power to the drive system.

[0024] Specifically, the electric shovel operation mode control method in the embodiment of the present application has a master controller as an execution entity, the master controller is provided in the electric shovel, electrically connected to the power supply module and / or connected to the power supply module via a CAN bus, and the master controller is connected to the drive system and the power battery pack via the CAN bus.

[0025] First, step S1 is executed to determine whether a trigger signal for the wired operation mode of the electric shovel is received before the electric shovel enters the wired operation mode. If the trigger signal is received, the power supply module of the electric shovel is started, the electric shovel is put into the wired operation mode, and the required power of the drive system of the electric shovel at this time is obtained.

[0026] The electric shovel operating modes may include a wired operating mode and a pure battery operating mode, where the wired operating mode means that the electric shovel is electrically connected to an external AC power source, and the pure battery operating mode means that the electric shovel is disconnected from the AC power source and the drive system is powered only by the internal power battery pack.

[0027] The power supply module is provided in the electric shovel and may be an AC / DC power supply module, the AC power supply may be a grid power distribution cabinet, the power supply module may be connected to the AC power supply through a socket provided in the electric shovel, and the power supply module converts AC current from the AC power supply into DC current to be applied to the electric shovel. In an embodiment of the present application, the AC / DC power supply module may be a DC generator or the like. The AC power supply may be connected to the power supply module through a power cord to which an AC charging plug is connected, and the power cord may be a cable whose length can be controlled by an automatic cable winding / unwinding device.

[0028] The trigger signal may be a CC signal that is automatically generated when the power module is connected to an AC power source, and when the trigger signal is detected by the master controller, it indicates that the power module is energized and the electric excavator is about to enter a wired operating mode.

[0029] In the embodiment of the present application, the power supply module of the electric shovel may be started using the CAN bus or may be started by an SN enable signal. When the power supply module is started using the CAN bus, it reports the current operating state of each module to the CAN bus and delivers a start-up command to the CAN bus according to the current operating state, and the AC / DC power supply module of the power supply module starts up when it receives the command. When the power supply module of the electric shovel is started up by an SN enable signal, the AC / DC power supply module of the power supply module may be started up based on the state of charge (SOC) value of the power battery pack read by the CAN bus, and each SOC value corresponds to a different SN enable signal, and the start-up of the AC / DC power supply module of the power supply module is controlled according to the instruction of each SN enable signal.

[0030] When the power module of the electric shovel is started up, the electric shovel enters into a wired working mode and starts to work in this working mode, at this time, the required power of the driving system of the electric shovel can be obtained.

[0031] The drive system of the electric shovel may include a motor controller and a motor, and the motor controller controls the output torque and rotation speed of the motor to operate the electric shovel. The required power of the drive system is the power required for the drive system and can be obtained by providing a data collection module in the master controller, and the required power may be the maximum power, which is the peak power of the drive system, or may be the actual average power.

[0032] Next, step S2 is executed to determine the relationship between the magnitude of the power required by the drive system and the power supplied by the power supply module. If it is determined that the power required by the drive system exceeds the power supplied by the power supply module as a result of the above determination, the power that can be supplied by the power supply module at this time cannot meet the needs of the drive system, and control is performed so that both the power supply module and the power battery pack of the electric shovel supply power to the drive system simultaneously.

[0033] The supply power of the power supply module represents the power that the power supply module can supply, and like the required power of the drive system described above, may be the peak power of the power supply module or the rated power of the power supply module, and the peak power of the power supply module may be obtained by the data collection module, and the rated power of the power supply module is the rated power specified on the AC / DC power supply module of the power supply module.

[0034] The power requirement of the drive system depends on the load connected and changes with the load, and if the load connected is too large, the power requirement of the drive system will also be large. Therefore, when the peak power of the drive system exceeds the peak power of the power supply module, or the actual average power of the drive system exceeds the rated power of the power supply module, it indicates that the power supply module cannot supply the power requirement of the drive system at this time, and therefore the power battery pack needs to supply the drive system, i.e., both the power supply module and the power battery pack need to supply the drive system simultaneously.

[0035] The power battery pack may include a power battery pack and a battery management system (BMS) installed in the power battery pack, and the BMS can monitor the operation data of the power battery pack in real time. The battery of the power battery pack may be a lithium battery, a lead-acid battery, etc., and the number of batteries of the power battery pack may be designed according to actual needs, and the present application is not particularly limited thereto.

[0036] When both the power supply module and the power battery pack supply power to the drive system simultaneously, the power supply module may provide all the supply power with priority, and the power battery pack may provide the remaining part of the power required by the drive system, and the power supplied by the power supply module and the power battery pack to the drive system may be distributed according to the actual needs and the battery state of charge (SOC) of the power battery pack. The power battery pack may transmit its SOC value to the master controller via the CAN bus, and the SOC value may represent the maximum discharge current of the power battery pack. For example, if the actual average power of the drive system is 100kw, the rated power of the power supply module is 80kw, and the power that can be supplied by the power battery pack is 30kw, the power supply module may supply 80kw of power to the drive system and the power battery pack may supply 20kw to the drive system, or the power supply module may supply 75kw to the drive system and the power battery pack may supply 25kw to the drive system.

[0037] In the embodiment of the present application, when both the power battery pack and the power supply module simultaneously supply power to the driving system, the remaining capacity of the power battery pack is being consumed from a fully charged state to an insufficient state.

[0038] In the electric shovel operation mode control method according to the present application, a power supply module of the electric shovel is started by determining whether or not a trigger signal for a wired operation mode of the electric shovel is received, a power requirement of a drive system of the electric shovel at this time is obtained, and if the required power exceeds the power supply of the power supply module, both the power supply module and the power battery pack of the electric shovel supply power to the drive system simultaneously. This ensures that the power requirement of the drive system of the electric shovel is always met, allowing the electric shovel to operate normally and improve the operating efficiency of the electric shovel, and also reduces the amount of power supplied by the power battery pack by simultaneously supplying power to the electric shovel from both the power battery pack and the power supply module, thereby reducing costs.

[0039] Based on the above embodiment, the electric shovel operation mode control method according to the embodiment of the present application is as follows: The method further includes controlling the power battery pack to supply power to the drive system when it is determined that the trigger signal has not been received.

[0040] Specifically, in the embodiment of the present application, if the trigger signal is not received, it indicates that the power supply module is not connected to the AC power supply, and therefore the power supply module cannot supply power to the drive system, and at this time, the master controller controls the power battery pack to supply power to the drive system.

[0041] When the power battery pack controls to supply power to the drive system, the electric shovel is in a pure battery operation mode, no AC power source is externally connected, and the pure battery operation circuit is composed of the power battery pack and the drive system. The electric shovel and the AC power source may be connected by inserting an AC plug connected to one end of a power cord into a socket provided on the electric shovel, and when the AC plug is removed from the socket, the electric shovel enters a pure battery operation mode, and when the AC plug is inserted into the socket, the electric shovel enters a wired operation mode.

[0042] In the electric shovel operation mode control method according to the embodiment of the present application, when a trigger signal is not received, the power battery pack is controlled to supply power to the drive system, so that the shovel can operate normally even when an external AC power source is not connected, which further ensures that the shovel operates normally and further improves the operation efficiency. In addition, in the pure battery operation mode, the electric shovel is not restricted by a power cord, thereby expanding the working range of the electric shovel.

[0043] Based on the above embodiment, the electric shovel operation mode control method according to the embodiment of the present application is as follows: acquiring battery remaining capacity status information of the power battery pack in real time when it is determined that the trigger signal has not been received; The method further includes a step of starting up the power supply module upon receiving the trigger signal and charging the power battery pack with the power supply module when the battery remaining capacity status information determines that the remaining capacity is lower than a remaining capacity threshold.

[0044] Specifically, in the embodiment of the present application, when the trigger signal is not received, it indicates that the power supply module is not connected to the AC power supply, and at this time, the electric shovel is in a pure battery operation mode, and the power battery pack supplies power to the drive system. The remaining capacity of the power battery pack starts to be consumed from a fully charged state, and in this case, the time until it is used up is shorter than the time until it is used up when both the power supply module and the power battery pack simultaneously supply power to the drive system. In the embodiment of the present application, when the master controller does not receive a trigger signal, the battery charge state of the power battery pack can be obtained in real time by the data collection module. The battery state of charge (SOC) represents the remaining capacity of the power battery pack, and is defined as the ratio of the remaining capacity to the battery capacity, and is generally expressed as a percentage.

[0045] Next, it is determined whether the remaining charge of the battery in the power battery pack is lower than the remaining charge threshold, and when the acquired battery remaining charge state information indicates that the remaining charge is lower than the remaining charge threshold, the power supply module is started upon receiving a trigger signal, and the power supply module charges the power battery pack. When the remaining charge of the power battery pack is lower than the remaining charge threshold, it indicates that the remaining charge of the power battery pack at this time is insufficient, the remaining charge of the power battery pack is running out, the power battery pack is in a tendency to be unable to supply power to the electric excavator, and the power battery pack needs to be charged. Here, the remaining charge threshold may be set according to the actual situation, for example, 0 or 10%, and the present application is not particularly limited thereto.

[0046] In the above case, the power battery pack may be charged by the power module, that is, when the remaining charge of the power battery pack is less than the remaining charge threshold, the AC plug is inserted into the socket to connect the AC power supply to the electric shovel. When the AC power supply is connected to the electric shovel, the master controller automatically receives a trigger signal and then starts the power module, which charges the power battery pack, so that the electric shovel enters a charging mode. In this case, the charging operating circuit is composed of the power module and the power battery pack module.

[0047] In the electric shovel operation mode control method according to the embodiment of the present application, when status information on the remaining battery charge of the power battery pack indicates that the remaining charge is lower than a remaining charge threshold, the power supply module is started up to charge the power battery pack, thereby preventing a decrease in the operating efficiency of the electric shovel due to insufficient power supply from the power battery pack in a pure battery operation mode, and since the power supply module can immediately charge the power battery pack, the power battery pack itself is protected from damage caused by a remaining charge that is too low, and the operating efficiency of the electric shovel is improved.

[0048] Based on the above embodiment, in the electric shovel operation mode control method according to the embodiment of the present application, after the step of obtaining the required power of the drive system of the electric shovel, When it is determined that the required power is smaller than the supplied power, controlling the power supply module to supply power to the drive system, and acquiring battery remaining capacity status information of a power battery pack of the electric shovel in real time; The method further includes controlling the power supply module to charge the power battery pack based on the battery remaining capacity status information.

[0049] Specifically, in an embodiment of the present application, the power required by the drive system of the electric shovel is acquired, and then the relationship between the power required by the drive system and the magnitude of the power supply of the power supply module is determined. The power supply is the power that can be supplied by the power supply module, and may be the peak power or the rated power of the power supply module.

[0050] If the required power is smaller than the supplied power, i.e., the peak power of the drive system is smaller than the peak power of the power supply module, or the actual average power of the drive system is smaller than the rated power of the power supply module, it indicates that the power of the power supply module can meet the power required for the drive system, and if the power supply module is controlled to supply power to the drive system, the normal operation of the electric excavator can be ensured and there is also surplus power. In this case, the remaining capacity status information of the power battery pack can be obtained in real time, and the power supply module can be controlled to charge the power battery pack based on the remaining capacity status information.

[0051] After obtaining the remaining capacity status information of the power battery pack, the power supply module may be controlled to charge the power battery pack based on the remaining capacity status information. For example, the peak power of the drive system is 50 kW and the peak power of the power supply module is 100 kW. In this case, the power required by the drive system is smaller than the power required by the power supply module. First, the power supply module is controlled to supply power to the drive system. At this time, the remaining capacity status information of the power battery pack obtained is 50%, i.e., the remaining capacity is 50%, and it is found that the remaining capacity of the power battery pack is low. Then, the power supply module may be controlled to charge the power battery pack.

[0052] In the electric shovel operation mode control method according to an embodiment of the present application, when the power required by the drive system is smaller than the power supplied by the power supply module, first, the power supply module is controlled to supply power to the drive system, and then, based on the obtained SOC value of the power battery pack, the power supply module is controlled to charge the power battery pack, thereby allowing the electric shovel to charge while maintaining operation, shortening the charging time of the power battery pack and improving efficiency.

[0053] In the method for controlling the operation mode of an electric shovel according to the embodiment of the present application, in the wired operation mode of the electric shovel, the power battery pack corresponds to a storage battery and plays the role of "peak-out" for the required power of the drive system. When the rated power of the AC / DC power supply module is equal to or higher than the actual average power of the drive system, the remaining capacity of the power battery is always kept high, and the efficiency of the electric shovel is improved.

[0054] Based on the above embodiment, in the electric shovel operation mode control method according to the embodiment of the present application, before the step of starting up the power supply module of the electric shovel, receiving a low-voltage power-on instruction for the electric shovel and automatically turning on the low-voltage power; The method further includes a step of receiving a high-voltage power-on instruction for the electric shovel after the low-voltage power-on is completed, and controlling the power supply module, the power battery pack of the electric shovel, and the driving system of the electric shovel to connect them two by two according to the high-voltage power-on instruction, thereby turning on the high-voltage power.

[0055] Specifically, in the embodiment of the present application, it is necessary to power on the electric shovel before starting up the power module of the electric shovel. The power on of the electric shovel may be performed by first turning on the low voltage power supply and then turning on the high voltage power supply. The low voltage power supply may be automatically turned on upon receiving a low voltage power supply on command, and the high voltage power supply needs to be turned on by connecting the power supply module, the power battery pack, and the drive system of the electric shovel two by two after receiving a high voltage power supply on command, and the turning on of the high voltage power supply is completed when the drive systems are connected two by two.

[0056] In the embodiment of the present application, the power-on switch of the electric shovel may be controlled by turning a key to transmit a low-voltage power-on instruction and a high-voltage power-on instruction. The key is turned to a gear corresponding to the power-on switch, for example, first to the low-voltage power-on gear, which enables the transmission of a low-voltage power-on instruction at this time, and when the electric shovel receives the low-voltage power-on instruction, it automatically performs low-voltage power-on. Next, the key is turned to the high-voltage power-on gear, which enables the transmission of a high-voltage power-on instruction at this time, and when the electric shovel receives the high-voltage power-on instruction, the relay controls the circuit to conduct the circuit between the power module, the power battery pack, and the drive system of the electric shovel, that is, the power module, the power battery pack, and the drive system are connected in pairs, and thus the high-voltage power is turned on. The relay may be any relay capable of controlling the on / off of a circuit, and may be provided according to the actual situation, and the present application does not particularly limit this.

[0057] In the electric shovel operation mode control method according to the embodiment of the present application, the low voltage power supply and the high voltage power supply are supplied to the electric shovel before starting up the power supply module, so that the electric shovel quickly enters an operation preparation state before starting up the power supply module, thereby improving the operating efficiency of the electric shovel.

[0058] 2 is a detailed schematic flow diagram of an electric shovel operation mode control method according to an embodiment of the present application. As shown in FIG. 2, the method includes steps S21 to S28. S21: Turn on the low voltage power supply, control the relay to turn on through the control signal, detect the trigger signal, and control the operation of the power supply module. S22: Determine whether the power required by the drive system is equal to or less than the power supplied by the power supply module. If it is not equal to or less than the supplied power, execute S23. If it is equal to or less than the supplied power, execute S24. S23: Both the power supply module and the power battery pack module simultaneously supply power to the drive system, and at this time, the electric shovel enters into wired operation mode to operate, and continues to execute S27. S24: Determine whether the power battery pack requires charging. If it requires charging, execute S25; if it does not require charging, execute S26. S25: The power supply module supplies power to the drive system and charges the power battery pack. At this time, the electric shovel charges while operating, and continues executing S27. S26: The power module supplies power to the drive system. S27: Determine whether or not a power-off command has been received. If received, execute S28; if not, return to S22. S28: The electric shovel will stop working.

[0059] 3 is a structural schematic diagram of an electric shovel operation mode controller according to an embodiment of the present application. As shown in FIG. 3, the electric shovel operation mode controller includes: When it is determined that a trigger signal for a wired operation mode of the electric shovel is received, the electric shovel Electricity A start-up module 301 for starting the power source module and obtaining the required power for the drive system of the electric shovel. The power supply module is connected to an AC power supply. and, and a control module 302 that, when it is determined that the required power is equal to or greater than the power supply power of the power supply module, controls both the power battery pack of the electric shovel and the power supply module to simultaneously supply power to the drive system.

[0060] Based on the above embodiment, the control module of the electric shovel operation mode controller according to the embodiment of the present application further comprises: When it is determined that the trigger signal has not been received, the power battery pack is controlled to supply power to the drive system.

[0061] Based on the above embodiment, the start-up module of the electric shovel operation mode controller according to the embodiment of the present application further comprises: If it is determined that the trigger signal has not been received, acquiring battery remaining capacity status information of the power battery pack in real time; When the battery remaining capacity status information determines that the remaining capacity is lower than a remaining capacity threshold, receiving the trigger signal activates the power supply module, and the power supply module is used to charge the power battery pack.

[0062] Based on the above embodiment, after the electric shovel operation mode controller according to the embodiment of the present application obtains the required power of the driving system of the electric shovel, the control module further When it is determined that the required power is smaller than the supplied power, the power supply module is controlled to supply power to the drive system, and battery remaining capacity status information of a power battery pack of the electric shovel is acquired in real time; The power supply module is used to control the power battery pack to charge according to the battery remaining capacity status information.

[0063] Based on the above embodiment, the electric shovel operation mode controller according to the embodiment of the present application may perform the following steps before starting up the power supply module of the electric shovel: a low-voltage power supply turning-on module that receives a low-voltage power supply turning-on instruction of the electric shovel and automatically turns on the low-voltage power; and a high-voltage power supply supply module that receives a high-voltage power supply supply instruction for the electric shovel after completion of low-voltage power supply supply, and controls the power supply module, the power battery pack of the electric shovel, and the driving system of the electric shovel to connect them two by two according to the high-voltage power supply supply instruction, thereby supplying high-voltage power.

[0064] Specifically, the electric shovel operation mode controller in the embodiments of the present application may be a master controller of the electric shovel, and the functions of each module correspond to the flow of each step in the above method embodiments with the master controller as the execution entity, and the effects achieved are also similar; specifically, reference may be made to the above embodiments, and this will not be described in detail in the embodiments of the present application.

[0065] FIG. 4 is a structural schematic diagram of an electric shovel operation mode control system according to an embodiment of the present application. As shown in FIG. 4, the electric shovel operation mode control system includes: The electric shovel includes the above electric shovel operation mode controller 401, the electric shovel power module 402, and the driving system 403; A first relay 405 is connected between the power supply module and the drive system, and a second relay 406 is connected between the power supply module and a power battery pack 404 of an electric shovel, The electric shovel operation mode controller is electrically connected to each of the first relay and the second relay, and the electric shovel operation mode controller controls each of the first relay and the second relay to be turned on, thereby powering on the electric shovel.

[0066] Specifically, in an embodiment of the present application, when the electric shovel receives a low-voltage power-on instruction, it automatically turns on the low-voltage power; when the electric shovel receives a high-voltage power-on instruction, the controller in the electric shovel operation mode controls the first relay and the second relay to be turned on by a control signal; at this time, the power supply module, the power battery pack, and the drive system are connected two by two, the high-voltage power-on of the electric shovel is completed, and the power-on of the electric shovel is completed.

[0067] The control signal may include a relay control signal and may be transmitted through an electrical connection, and the relay may be any relay capable of controlling the on / off of a circuit and may be provided according to actual circumstances, and the present application is not particularly limited thereto.

[0068] Based on the above embodiment, in the electric shovel operation mode control system according to the embodiment of the present application, the electric shovel operation mode controller, the power supply module, the drive system and the power battery pack are connected via a CAN bus.

[0069] Fig. 5 is a CAN network diagram of an electric shovel operation mode control system according to an embodiment of the present application. As shown in Fig. 5, an electric shovel operation mode controller, the power supply module, the drive system, and the power battery pack are connected via a CAN bus. Specifically, a CAN (Controller Area Network) bus is a local network of a controller and is a multi-master serial bus standard for connecting electronic control units. Data communication between each node of a CAN bus network has high real-time characteristics. Therefore, when an electric shovel operation mode controller, the power supply module, the drive system, and the power battery pack are connected via a CAN bus, real-time data communication can be immediately performed via the CAN bus. This enables the electric shovel to immediately switch the operation mode, improving the operation efficiency of the electric shovel.

[0070] Since the electric shovel operation mode control system according to the embodiment of the present application includes the above-mentioned electric shovel operation mode controller, both have similar technical effects. For details, refer to the above embodiment and the embodiment of the present application will not describe them in detail.

[0071] An embodiment of the present application also provides an electric shovel, including the electric shovel operation mode control system described above for controlling an operation mode of the electric shovel.

[0072] The shovel according to the embodiment of the present application has the same technical effects as the electric shovel operation mode control system described above, and will not be described in detail in the embodiment of the present application.

[0073] 6 exemplarily illustrates a schematic diagram of the physical structure of the electronic device. As shown in FIG. 6, the electronic device may include a processor 610, a communications interface 620, a memory 630, and a communications bus 640, among which the processor 610, the communications interface 620, and the memory 630 communicate with each other via the communications bus 640. The processor 610 may call up logic instructions in the memory 630 to execute the electric shovel operation mode control method according to each of the above embodiments, which includes the steps of: starting up a power supply module of the electric shovel and acquiring a required power of a drive system of the electric shovel when it is determined that a trigger signal for a wired operation mode of the electric shovel has been received; and controlling both the power battery pack of the electric shovel and the power supply module to simultaneously supply power to the drive system when it is determined that the required power is equal to or greater than the supply power of the power supply module.

[0074] Furthermore, the logic instructions of the memory 630 may be implemented in the form of a software functional unit and stored in a computer-readable storage medium when sold or used as an independent product. Based on this understanding, the essential or prior art part of the technical solution of the present application, or a part of the technical solution, may be embodied in the form of a software product stored in a storage medium, and the computer software product includes some instructions for causing a computer device (which may be a personal computer, a server, or a network device, etc.) to execute all or part of the steps of the method according to various embodiments of the present application. Meanwhile, the storage medium includes various media capable of storing program code, such as a USB memory, a removable hard disk, a read-only memory (ROM), a random access memory (RAM), a magnetic disk, or a compact disk.

[0075] In another aspect, the present application also provides a computer program product including a computer program stored in a non-transitory computer-readable storage medium, the computer program including program instructions capable of causing a computer to execute an electric shovel operation mode control method according to each of the above embodiments, the computer program including, when it is determined that a trigger signal for a wired operation mode of the electric shovel has been received, a step of starting up a power supply module of the electric shovel and acquiring required power of a drive system of the electric shovel, and when it is determined that the required power is equal to or greater than the supply power of the power supply module, a step of controlling so that both the power battery pack and the power supply module of the electric shovel simultaneously supply power to the drive system.

[0076] In a further aspect, the present application also provides a non-transitory computer-readable storage medium having stored thereon a computer program for executing the electric shovel operation mode control method according to each of the above embodiments, the computer program including, when it is determined that a trigger signal for a wired operation mode of the electric shovel has been received, a step of starting up a power supply module of the electric shovel and acquiring required power of a drive system of the electric shovel, and when it is determined that the required power is equal to or greater than the supply power of the power supply module, a step of controlling both the power battery pack of the electric shovel and the power supply module to simultaneously supply power to the drive system.

[0077] The above-described device embodiment is merely schematic, in which the units described as separate components may or may not be physically separated, and the components shown as units may or may not be physical components, i.e., located in one place or distributed in multiple network units. Some or all of these modules may be selected to achieve the purpose of the embodiment according to actual needs. Those skilled in the art can understand and implement it without creative efforts.

[0078] From the above description of the embodiments, it is clearly understood by those skilled in the art that each embodiment can be realized in a form in which a general-purpose hardware platform required for software is added, but of course, it may be realized by hardware. Based on such understanding, the essential part of the above technical solution or the part that contributes to the prior art may be embodied in the form of a software product that can be stored in a computer-readable storage medium such as a ROM / RAM, a magnetic disk, a compact disk, etc., and this software product may include some instructions for a computer device (which may be a personal computer, a server, or a network device) to execute the methods described in various embodiments or parts of the embodiments.

[0079] It should be noted that the above embodiments are only used to describe the technical solutions of the present application, and are not intended to limit the same. Although the present application has been described in detail with reference to the above embodiments, those skilled in the art will understand that the technical solutions described in the above embodiments can be modified or some of the technical features can be replaced equally, and such modifications or replacements do not deviate the essence of the corresponding technical solutions from the spirit and scope of the technical solutions of the embodiments of the present application.

Claims

1. A method for controlling an operation mode of an electric shovel, comprising the steps of: When it is determined that a trigger signal for a wired operation mode of the electric shovel is received, starting up a power supply module of the electric shovel and obtaining a required power for a drive system of the electric shovel, the power supply module being connected to an AC power supply; When it is determined that the required power is equal to or greater than the supply power of the power supply module, controlling so that both the power battery pack of the electric shovel and the power supply module simultaneously supply power to the drive system; After the step of obtaining the required power of the drive system of the electric shovel, If it is determined that the required power is less than the supplied power, controlling the power supply module to supply power to the drive system, and determining whether the power battery pack requires charging; If the power battery pack requires charging, controlling the power supply module to charge the power battery pack; The method comprises: Before the step of starting up a power supply module of the electric shovel, receiving a low-voltage power-on instruction for the electric shovel and automatically turning on the low-voltage power; receiving a high-voltage power-on instruction for the electric shovel after the low-voltage power-on is completed, and controlling two selected from the power supply module, the power battery pack of the electric shovel, and the drive system of the electric shovel in accordance with the high-voltage power-on instruction to connect them to each other, thereby turning on the high-voltage power.

2. The electric shovel operation mode control method according to claim 1 , further comprising the step of controlling the power battery pack to supply power to the drive system when it is determined that the trigger signal has not been received.

3. acquiring battery remaining capacity status information of the power battery pack in real time when it is determined that the trigger signal has not been received; 2. The electric shovel operation mode control method according to claim 1, further comprising: upon receiving the trigger signal, starting up the power supply module and charging the power battery pack with the power supply module when the battery remaining amount status information determines that the remaining amount is lower than a remaining amount threshold.

4. An electric shovel operation mode controller, a startup module that, when it is determined that a trigger signal for a wired operation mode of the electric shovel is received, starts up a power supply module of the electric shovel and obtains power required for a drive system of the electric shovel, the power supply module being connected to an AC power supply; a control module that controls both a power battery pack of the electric shovel and the power supply module to simultaneously supply power to the drive system when it is determined that the required power is equal to or greater than the supply power of the power supply module; The control module further comprises: After the step of obtaining the required power of the drive system of the electric shovel, If it is determined that the required power is less than the supplied power, control the power supply module to supply power to the drive system, and determine whether the power battery pack requires charging; When the power battery pack requires charging, the power supply module controls the power battery pack to charge. It is configured as follows: The electric shovel operation mode controller, A low-voltage power-on module configured to receive a low-voltage power-on instruction of the electric shovel and automatically turn on the low-voltage power; and a high-voltage power-on module configured to receive a high-voltage power-on instruction for the electric shovel after the low-voltage power-on is completed, and to control two selected from the power supply module, the power battery pack of the electric shovel, and the drive system of the electric shovel to connect them to each other in accordance with the high-voltage power-on instruction, thereby turning on the high-voltage power.

5. An electric shovel operation mode control system, comprising: The electric shovel operation mode controller according to claim 4, a power module of the electric shovel, and a drive system, a first relay is connected between the power supply module and the drive system, and a second relay is connected between the power supply module and a power battery pack of an electric shovel; The electric shovel operation mode controller is electrically connected to each of the first relay and the second relay, and the electric shovel operation mode controller controls each of the first relay and the second relay to turn them on, thereby powering on the electric shovel.

6. The electric shovel operation mode control system according to claim 5 , wherein the electric shovel operation mode controller, the power supply module, the drive system, and the power battery pack are connected via a CAN bus.

7. An electric shovel, An electric shovel comprising the electric shovel operation mode control system according to claim 5 or 6 for controlling an operation mode of the electric shovel.

8. An electronic device including a memory, a processor, and a computer program stored in the memory and operable on the processor, The electronic device, when the processor executes the program, realizes the steps of the electric shovel operation mode control method according to any one of claims 1 to 3.

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