Driving device switching method, device, equipment, control system and engineering machinery

Abstract

The present application relates to the field of transmission, and specifically to a method, apparatus, device, control system, and engineering machinery for switching drive devices. The method includes obtaining a control signal for using a target drive device as a power source, wherein the target drive device includes an engine and a drive motor, detecting whether transmission conditions exist for using the target drive device as a power source without damaging the transmission system, and if so, using the target drive device as a power source. The technical solution of the present application is capable of switching the target drive device as a power source without damaging the transmission system, thereby preventing damage to the transmission system structure of engineering machinery with a hybrid power source when switching drive devices.

Description

Technical Field

[0001] The present application relates to the field of transmission, and in particular to a switching method, device, equipment, control system and engineering machinery for a drive device. Background Art

[0002] With increasingly stringent environmental regulations and rising fuel costs, hybrid-powered construction machinery is gaining popularity due to its energy-saving, environmentally friendly, and cost-effective advantages. Compared to traditionally powered construction machinery, hybrid-powered construction machinery incorporates a drive motor as a driving device, which poses a risk of damage to the transmission structure when switching between drive devices.

[0003] Therefore, how to reduce the risk of damage to the transmission system structure when hybrid power source engineering machinery switches drive equipment is a technical problem that needs to be solved urgently by those skilled in the art. Summary of the Invention

[0004] In view of this, the embodiments of the present application are dedicated to providing a method, device, equipment, control system and engineering machinery for switching a drive device to solve the problem in the prior art that when engineering machinery with a hybrid power source switches the drive device, there is a risk of damage to the transmission system structure.

[0005] On one hand, the present application provides a method for switching a drive device, comprising:

[0006] Obtaining a control signal for using a target driving device as a power source; wherein the target driving device includes an engine and a driving motor;

[0007] In response to the control signal, detecting whether a transmission condition is met in which the target drive device is used as a power source without damaging a transmission system;

[0008] If the transmission conditions are met in which the target driving device is used as the power source without damaging the transmission system, the target driving device is used as the power source.

[0009] Furthermore, in the above method, if the target driving device is an engine, the detecting whether the transmission conditions for using the target driving device as a power source without damaging the transmission system are met includes:

[0010] Detecting whether the drive motor is in a stopped state;

[0011] If the drive motor is in a stopped state, it is determined that a transmission condition is met in which the engine is used as the power source without damaging the transmission system.

[0012] Furthermore, in the above method, if the target driving device is a driving motor, the detecting whether the transmission conditions for using the target driving device as a power source without damaging the transmission system are met includes:

[0013] detecting whether the transmission system is in a hook-and-take-off state;

[0014] If the transmission system is not in the power-taking state, it is determined that a transmission condition is met in which the drive motor is used as the power source without damaging the transmission system.

[0015] Furthermore, the above method further includes:

[0016] Obtain the power-on signal of the power supply;

[0017] detecting whether the power supply is used to supply power for the driving operation of the driving motor;

[0018] If the power supply is used to power the driving operation of the drive motor, detecting whether the transmission system is in a hooking force state;

[0019] If the transmission system is in a power-taking state, after controlling the engine to stop and controlling the transmission system to cancel power taking, the drive motor is controlled to start.

[0020] Furthermore, in the above method, the detecting whether the power supply is used to power the driving operation of the driving motor includes:

[0021] Check whether the load equipment is in working state;

[0022] If the load device is in an operating state, it is determined that the power supply is used to supply power for the operation of the drive motor.

[0023] Furthermore, in the above method, the detecting whether the load device is in an operating state includes:

[0024] Detecting whether the brake switch of the load device is in a failed state;

[0025] If the brake switch of the load device is in a failed state, it means that the load device is in a working state.

[0026] On the other hand, the present application also provides a switching device for a drive device, comprising:

[0027] an acquisition module, configured to acquire a control signal for using a target driving device as a power source, wherein the target driving device includes an engine and a driving motor;

[0028] a detection module, configured to detect, in response to the control signal, whether a transmission condition is met in which the target drive device is used as a power source without damaging the transmission system;

[0029] The switching unit is configured to use the target driving device as the power source if a transmission condition is met in which the target driving device is used as the power source without damaging the transmission system.

[0030] On the other hand, the present application also provides an electronic device, comprising a memory, a processor, and a computer program stored in the memory and executed by the processor, wherein the processor implements the steps of the switching method of the driving device described in any one of the above when executing the computer program.

[0031] On the other hand, the present application also provides a control system, including a body control device, a motor control device, an engine control device, a power management device, and the electronic devices described above;

[0032] The electronic equipment is respectively connected to the vehicle body control device, the motor control device, the power management device, and the power take-off device;

[0033] The vehicle body control device is connected to the power take-off device and the engine control device respectively;

[0034] The engine is connected to an engine control device of the control system.

[0035] On the other hand, the present application also provides an engineering machine comprising the drive system described above.

[0036] The present application provides a method, apparatus, device, control system, and engineering machinery for switching a drive device. The method includes obtaining a control signal for using a target drive device as a power source, wherein the target drive device includes an engine and a drive motor, detecting whether the transmission conditions exist for using the target drive device as a power source without damaging the transmission system, and if the transmission conditions exist for using the target drive device as a power source without damaging the transmission system, then using the target drive device as the power source. The technical solution of the present application can switch the target drive device to a power source without damaging the transmission system, thereby preventing damage to the transmission system structure of engineering machinery with a hybrid power source when switching drive devices. BRIEF DESCRIPTION OF THE DRAWINGS

[0037] Figure 1 The figure shows a transmission structure diagram of a hybrid power source engineering machinery in the prior art.

[0038] Figure 2 Shown is a schematic structural diagram of a control system provided in one embodiment of the present application.

[0039] Figure 3 The figure is a flow chart of a switching method of a driving device provided in one embodiment of the present application.

[0040] Figure 4 Shown is a flow chart of a method for switching an engine as a power source provided in one embodiment of the present application.

[0041] Figure 5 The figure shows a flow chart of a method for switching a drive motor as a power source provided by an embodiment of the present application.

[0042] Figure 6 FIG2 is a flow chart of a method for determining a power source according to an embodiment of the present application.

[0043] Figure 7 Shown is a schematic structural diagram of a switching device of a driving device provided in one embodiment of the present application.

[0044] Figure 8 Shown is a structural schematic diagram of an electronic device provided in one embodiment of the present application.

[0045] Figure 9 Shown is a schematic structural diagram of a drive system provided in one embodiment of the present application. DETAILED DESCRIPTION

[0046] The following will be combined with the drawings in the embodiments of this application to clearly and completely describe the technical solutions in the embodiments of this application. Obviously, the embodiments described are only part of the embodiments of this application, not all of the embodiments. Based on the embodiments in this application, all other embodiments obtained by ordinary technicians in this field without making creative efforts are within the scope of protection of this application.

[0047] Compared to traditionally powered construction machinery, hybrid-powered construction machinery incorporates a drive motor within its transmission system, which is not only energy-efficient and environmentally friendly, but also reduces operating costs. However, during operation, construction machinery such as dump trucks, fire trucks, cement mixers, and cranes require power take-off devices to drive external working devices. Due to the mechanical limitations of the transmission system, when the machinery is in the power take-off state, the gearbox engages with the front gear of the motor. If the motor is operating at this time, it can damage the transmission structure.

[0048] Specifically, Figure 1 The figure shows a transmission structure diagram of a hybrid power source engineering machinery in the prior art. Figure 1As shown, in the prior art, the transmission structure of a hybrid power engineering machine generally includes an engine 100, a gearbox 110, a travel transmission shaft 120, a drive motor 130, and a load device 140. The load device 140 is an external working device such as a lifting pump or a hydraulic pump.

[0049] When a hybrid power source construction machine uses its engine 100 to drive a load 140, it requires a power take-off (PTO) device to take power from the load 140. Specifically, the PTO device engages the gears at the front of the transmission 110 and the drive motor 130. The engine 100 then changes the speed ratio and direction of motion through the transmission, which then transmits the power to the motor, ultimately driving the load 140. Since the transmission 110 and the drive motor 130 are meshed at this point, the motor is only used for transmission. If the motor suddenly rotates, it could damage the drive motor 130, the engine 100, the transmission 110, or the PTO device.

[0050] When hybrid power engineering machinery uses the drive motor 130 to drive the load device 140, the drive motor 130 can directly drive the load device 140. If the power take-off device is used to take power at this time, causing the transmission 110 to engage with the running motor 130, this may also cause damage to the drive motor 130, the engine 100, the transmission 110, or the power take-off device.

[0051] To prevent damage to the drivetrain, the current measure is to specify in the operating instructions of hybrid power construction machinery that it is forbidden to start the drive motor while applying power or to apply power while the drive motor is rotating. However, in actual operation, operators may make mistakes when switching drive devices, resulting in damage to the drivetrain structure.

[0052] Based on this, the present application provides a method, device, equipment, control system and engineering machinery for switching a drive device to solve the problem in the prior art that when engineering machinery with a hybrid power source switches the drive device, there is a risk of damage to the transmission system structure.

[0053] Figure 2 The figure shows a schematic diagram of the structure of a control system provided by an embodiment of the present application. Figure 2As shown, the control system of this embodiment includes a body control device 200, a motor control device 210, an engine control device 220, a power management device 230, and an electronic device 240. The electronic device 240 is connected to the body control device 200, the motor control device 210, the power management device 230, and the power take-off device. The body control device 200 is also connected to the power take-off device and the engine control device 220. The motor control device 210 is connected to the drive motor to control its operating state, while the engine control device 220 is connected to the engine to control its operating state.

[0054] The power management device 230 includes a battery manager 2301 and a charger 2302 , and both the battery manager 2301 and the charger 2302 are connected to the electronic device 240 .

[0055] In order to facilitate the control of construction machinery, current hybrid power construction machinery is equipped with a body controller (BCM), motor electronic control unit, engine electronic control unit, battery management system (BMS), on-board charger (OBC) and vehicular communication unit (VCU) and other equipment.

[0056] For example, the BCM in the engineering machinery can be used as the body control device 200 in this embodiment, the motor electronic control unit in the engineering machinery can be used as the motor control device 210 in this embodiment, the engine electronic control unit in the engineering machinery can be used as the engine control device 220 in this embodiment, the BMS in the engineering machinery can be used as the battery manager 2301 in this embodiment, the OBC in the engineering machinery can be used as the charger 2302 in this embodiment, and the VCU in the engineering machinery can be used as the electronic device 240 in this embodiment.

[0057] The electronic device 240 in this embodiment is capable of performing logical judgment. When it is detected that the engine is in a running state and the power take-off device is in a power-taking state, the drive motor is prohibited from running, that is, when it is detected that the engine is in a running state and the power take-off device is in a power-taking state, even if a start signal of the drive motor is received, the drive motor cannot start running; when it is detected that the drive motor is in a running state, the power take-off device is prohibited from taking power, that is, when it is detected that the drive motor is in a running state, even if a power take-off signal of the power take-off device is received, the gearbox and the front end gear of the drive motor will not engage.

[0058] Specifically, the electronic device 240 can determine whether the engine is in the running state through the connected body control device 200. The body control device 200 sends a first control signal to the engine control device 220, so that the engine control device 220 controls the engine operation. Generally, the body control device 200 continuously sends a high-level hard-wired signal to the engine control device 220 as the first control signal. Driven by the high-level hard-wired signal, the engine control device 220 controls the engine operation. When the body control device 200 stops sending the high-level hard-wired signal to the engine control device 220, the engine control device 220 controls the engine to shut down. In this embodiment, the electronic device 240 is connected to the body control device 200 to detect whether the body control device 200 sends the first control signal. If the electronic device 240 detects that the body control device 200 sends the first control signal to the engine control device 220, it indicates that the engine is in the running state.

[0059] It should be noted that, during actual operation, the body control device 200 may send more than the aforementioned first control signal to the engine control device 220. Therefore, when the electronic device 240 detects that the body control device 200 is sending a signal to the engine control device 220, it is necessary to verify whether the signal sent by the body control device 200 is the aforementioned first control signal. For example, the message or level of the signal sent by the body control device 200 may be analyzed. If the message or level of the signal sent by the body control device 200 meets the message or level requirements of the first control signal, the signal sent by the body control device 200 is determined to be the first control signal.

[0060] Electronic device 240 can determine whether the connected power take-off device is in the power take-off state through the connected power take-off device. For example, electronic device 240 can obtain a power take-off signal from the power take-off device and analyze the power take-off signal message. If the obtained power take-off signal message meets the message requirements for the power take-off state of the power take-off device, then the electronic device 240 determines that the power take-off device is in the power take-off state.

[0061] When the electronic device 240 detects that the engine is running and the power take-off device is in the power take-off state, the drive motor is prohibited from running. At the same time, if the high-voltage device is in the high-voltage state, the high-voltage device is controlled to reduce the high voltage. For example, controlling the high-voltage device to reduce the high voltage includes controlling the battery to stop high-voltage output.

[0062] Specifically, the electronic device 240 can determine whether the drive motor is in the running state through the connected motor control device 210. The motor control device 210 can obtain the motor speed and enable signal of the drive motor and transmit the motor speed and enable signal of the drive motor to the electronic device 240. When the motor speed is 0 and the drive motor does not output the enable signal, it indicates that the drive motor is not in the running state; when the motor speed is not 0 or the drive motor outputs the enable signal, it indicates that the drive motor is in the running state.

[0063] When the electronic device 240 detects that the drive motor is in the running state, the power take-off device is prohibited from taking power. For example, the electronic device 240 can send a signal to the body control device 200 to enable the body control device 200 to prohibit the power take-off valve of the power take-off device from outputting.

[0064] In addition, when the charger 2302 is connected to the power supply, the electronic device 240 can perform a logical judgment to determine whether the purpose of connecting to the power supply is to charge the battery or to power the driving operation of the drive motor. If it is determined that the purpose of the charger 2302 connecting to the power supply is to charge the battery, then the current state can be maintained unchanged and only the battery can be charged. If it is determined that the purpose of the charger 2302 connecting to the power supply is to power the driving operation of the drive motor, and the drive motor is currently driving the load device to operate, then the drive motor can continue to drive the load device to operate; if it is determined that the purpose of the charger 2302 connecting to the power supply is to power the driving operation of the drive motor, and the engine is currently driving the load device to operate, then it is necessary to switch to the drive motor driving the load device to operate.

[0065] Electronic device 240 can determine whether it is connected to a power source through the connected charger 2302. When charger 2302 is connected to a power source, charger 2302 generates a power-on signal and transmits the power-on signal to electronic device 240. Electronic device 240 receives the power-on signal, and if the power-on signal is valid, it determines that charger 2302 is connected to a power source. For example, the power-on signal message can be tested. If the power-on signal message meets preset requirements, it indicates that the power-on signal is valid.

[0066] The electronic device 240 can detect the operating status of the load device and determine, based on the operating status of the load device, whether the purpose of connecting the power supply is to charge the battery or to power the drive motor. Specifically, if the load device is not in the operating state, the purpose of connecting the power supply is determined to be to charge the battery. If the load device is in the operating state, the purpose of connecting the power supply is determined to be to power the drive motor.

[0067] The operating state of a load device is typically controlled by a brake switch. When the brake switch is enabled, the load device brakes and cannot operate. When the brake switch is disabled, the load device is not braked and is in operation. In this embodiment, electronic device 240 is connected to the load device's brake switch. Electronic device 240 can determine the load device's operating state based on the switch signal sent by the load device's brake switch.

[0068] Illustratively, the brake switch of this embodiment includes a parking brake switch of engineering machinery such as a dump truck, a fire truck, a cement mixer truck, and a crane.

[0069] For example, the electronic device 240 can obtain the switch signal of the brake switch and analyze the message of the switch signal. If the message of the obtained switch signal meets the message requirements when the brake switch is in the braking state, it is determined that the brake switch is in the braking state, the load equipment is braked and cannot operate, and the purpose of connecting to the power supply is to charge the battery; if the message of the obtained switch signal does not meet the message requirements when the brake switch is in the braking state, it is determined that the brake switch is in the failure state, the load equipment is not braked and is in the operating state, and the purpose of connecting to the power supply is to power the driving operation of the drive motor.

[0070] Furthermore, if it is determined that charger 2302 is connected to the power supply to power the drive motor, and the load device is currently driven by the engine, and the load device is switched to the drive motor, to prevent damage to the transmission system, electronic device 240 may send a second control signal to body control device 200, causing body control device 200 to stop sending the first control signal to engine control device 220 based on the second control signal, thereby shutting down the engine. Simultaneously, electronic device 240 controls the power take-off device to cancel power draw. Once the engine is shut down and the power take-off device cancels power draw, motor control device 210 controls the drive motor to start. Furthermore, while the drive motor is operating, the power take-off device is prohibited from taking power.

[0071] For example, the electronic device 240 can send a second control signal to the ignition shutdown signal pin of the body control device 200. The body control device 200 stops sending a high-level hard-wire signal to the engine control device 220 according to the second control signal, and the engine control device 220 controls the engine to shut down.

[0072] The control system of this embodiment can prevent the operator from starting the motor when the power is applied or applying power when the motor is rotating during actual operation, and can prevent the transmission system structure of hybrid power source engineering machinery from being damaged when switching drive equipment.

[0073] In another optional embodiment, the present application also provides a method for switching a driving device, which is applied to the electronic device in the above embodiment, such as Figure 3 As shown, the switching method of the driving device of this embodiment includes the following steps:

[0074] S301: Acquire a control signal for using a target driving device as a power source.

[0075] The target driving device includes a driving motor or an engine; the control signal for using the target driving device as a power source generally comes from a user of the mechanical device.

[0076] Specifically, when it is necessary to use a drive motor as a power source to drive a load device, the user starts the drive motor, and the motor control device is used to transmit the control signal of the drive motor as a power source to the electronic device through the motor control device; when it is necessary to use the engine as a power source to drive the load device, the user uses the power take-off device to take off the power, so that the gearbox engages with the front end gear of the drive motor, and obtains the power of the engine to drive the load device through the drive motor transmission. The power take-off device is used to transmit the power take-off signal as a control signal to use the engine as a power source to the electronic device.

[0077] S302 : In response to the control signal, detecting whether a transmission condition is met in which the target driving device is used as a power source without damaging the transmission system.

[0078] To prevent damage to the transmission system structure of hybrid power engineering machinery when switching drive devices, after obtaining the control signal for using the target drive device as the power source, first check whether the transmission conditions for using the target drive device as the power source without damaging the transmission system are met:

[0079] If the transmission conditions for using the target drive device as a power source without damaging the transmission system are not currently met, the target drive device cannot be used as a power source. For example, a reminder message may be output to inform the user that the target drive device cannot currently be used as a power source, allowing the user to manually adjust the setting and then set the target drive device as a power source when the transmission conditions for using the target drive device as a power source without damaging the transmission system are met.

[0080] As described in the above embodiments, starting the motor while power is being taken off or taking power while the motor is rotating can damage the transmission system. Therefore, in this embodiment, when the drive motor is stopped, the engine can be used as the power source without damaging the transmission system. When the power take-off device is not taking off power, the drive motor can be used as the power source without damaging the transmission system.

[0081] S303: If the transmission conditions are met to use the target driving device as the power source without damaging the transmission system, the target driving device is used as the power source.

[0082] If the transmission conditions are met to use the target drive device as a power source without damaging the transmission system, then the target drive device can be used as the power source.

[0083] For example, if an engine is used as a power source to drive a load device, the user needs to first take off power through a power take-off device, and then start the engine to engage the gearbox with the front end gear of the drive motor to obtain the power of the engine to drive the load device.

[0084] If a drive motor is used as a power source to drive a load device, the user only needs to start the drive motor through the motor control device.

[0085] The driving device switching method of this embodiment can switch the target driving device to the power source without damaging the transmission system, thereby preventing the transmission system structure of the hybrid power source engineering machinery from being damaged when switching the driving device.

[0086] In another optional embodiment, the target power source includes an engine, such as Figure 4 As shown, the steps of the above embodiment are to detect whether the transmission conditions for using the target driving device as a power source are met without damaging the transmission system, which can be specifically performed by the following steps:

[0087] S401: Detect whether the drive motor is in a stopped state.

[0088] If the target driving device is an engine, it is necessary to detect whether the current running state of the driving motor is a shutdown state.

[0089] In this embodiment, the vehicle body control device connected to the electronic device can be used to determine whether the drive motor is in the running state. The specific determination method is described in detail in the above embodiment, and those skilled in the art can refer to the description of the above embodiment, which is not repeated here.

[0090] S402: If the drive motor is in a stopped state, determine whether a transmission condition is met in which the engine is used as a power source without damaging the transmission system.

[0091] If it is determined that the drive motor is in a stopped state, it means that the gearbox and the front end gear of the drive motor can be engaged without damaging the transmission system, and the transmission conditions are met to use the engine as a power source without damaging the transmission system.

[0092] In this step, before taking power from the power take-off device and starting the engine, first check whether the drive motor is in a stopped state. If the drive motor is in a stopped state, then take power from the power take-off device and start the engine to avoid damage to the transmission system structure.

[0093] In another optional embodiment, the target power source includes a drive motor, such as Figure 5 As shown, the steps of the above embodiment are to detect whether the transmission conditions for using the target driving device as a power source are met without damaging the transmission system, which can be specifically performed by the following steps:

[0094] S501: Detect whether the transmission system is in a hook-and-take-off state.

[0095] If the target driving device is a driving motor, it is necessary to detect whether the transmission system is in the hook force state.

[0096] In this embodiment, a power take-off device connected to an electronic device can be used to determine whether the transmission system is in a power take-off state. The specific determination method is described in detail in the above embodiments, and those skilled in the art can refer to the description of the above embodiments, which will not be repeated here.

[0097] S502: If the transmission system is not in the power-taking state, determine whether the transmission condition is met to use the drive motor as the power source without damaging the transmission system.

[0098] If it is determined that the transmission system is not in the power-taking state, that is, the gearbox and the front end gear of the drive motor are not engaged, starting the drive motor at this time will not damage the transmission system, and the transmission conditions can be met to use the engine as the power source without damaging the transmission system.

[0099] In this step, before starting the drive motor, first check whether the transmission system is in the hook-off state. Start the drive motor when the transmission system is not in the hook-off state to avoid damage to the transmission system structure.

[0100] In another optional embodiment, if Figure 6 As shown, the switching method of the driving device in the above embodiment may further include the following steps:

[0101] S601: Obtain a power-on signal from a power supply.

[0102] The power-on signal is generated by the charger when the user connects the power supply to the charger. In this embodiment, the electronic device is connected to the charger and can obtain the power-on signal.

[0103] S602: Detect whether the power supply is used to supply power for the driving operation of the drive motor.

[0104] After receiving the power-on signal, the purpose of the user connecting to the power supply needs to be determined. Generally, there are two purposes for connecting to the power supply: one is to use the power supply to charge the battery, and the other is to use the power supply directly as a driving force to drive the drive motor to power the drive motor.

[0105] In this step, it is necessary to detect whether the user connected the power supply to the charger to power the drive motor. For example, the purpose of the user connecting the power supply to the charger can be determined based on the operating state of the power-consuming device. If the power-consuming device is not in an operating state but is in a shutdown state, it indicates that the user connected the power supply to the charger to charge the battery. If the power-consuming device is in an operating state, it indicates that the user connected the power supply to the charger to power the drive motor.

[0106] If you connected the power supply to the charger to charge the battery, you can maintain the current status and only charge the battery. If you connected the power supply to the charger to power the drive motor, you need to perform further testing according to the following steps.

[0107] S603: If the power supply is used to power the driving operation of the driving motor, detect whether the transmission system is in a hooking force state.

[0108] If the user connects the power supply to the charger to power the drive motor, the drive motor should be used as the power source. However, if the transmission system is currently in the take-off state, directly switching the drive motor to the power source could damage the transmission system. Therefore, in this embodiment, if the power supply is used to power the drive motor, it is necessary to further detect whether the transmission system is currently in the take-off state.

[0109] S604: If the transmission system is in the power take-off state, after controlling the engine to stop and controlling the transmission system to cancel the power take-off, the drive motor is controlled to start.

[0110] If the transmission system is not in the hooking force state, it means that the drive motor is currently used to drive the load equipment. In this case, the driving force of the drive motor is switched from the battery to the power supply, and the drive motor can continue to drive the load equipment.

[0111] If the transmission system is in the power-taking state, it means that the engine is currently being used to drive the load equipment. In order to avoid damage to the transmission system, it is necessary to first control the engine to be shut down. After the engine is shut down, the transmission system is controlled to cancel the power take-off, and then the drive motor is controlled to start through the motor control device, and the drive motor is used as the power source to drive the load equipment.

[0112] In this embodiment, the engine can be shut down by controlling the vehicle body control device connected to the electronic device, and the power take-off device connected to the electronic device can be used to control the transmission system to cancel the power take-off. The specific control methods are described in detail in the above embodiments, and those skilled in the art can refer to the description of the above embodiments, and will not be repeated here.

[0113] In this embodiment, after obtaining the power-on signal, if it is determined that the purpose of the power-on signal is to power the driving operation of the drive motor and the transmission system is in a power-taking state, then after controlling the engine to stop and controlling the transmission system to cancel the power take-off, the drive motor is controlled to start to avoid damage to the transmission system structure.

[0114] In another optional embodiment, the steps of the above embodiment for detecting whether the power supply is used to power the driving operation of the drive motor may specifically include the following steps:

[0115] Detect whether the load device is in an operating state; if the load device is in an operating state, determine whether the power supply is used to power the operation of the drive motor.

[0116] In this embodiment, whether the power supply is used to supply power for the driving operation of the drive motor is determined according to the operating status of the load device.

[0117] Specifically, if the load device is not in an operating state, it means that the drive motor is not working, and the purpose of the user connecting to the power supply is to charge the battery.

[0118] If the load device is in operation, it indicates that the engine or drive motor is in operation. The user connects to the power supply to provide driving force to the drive motor, so that the drive motor acts as a power source to drive the load device. For example, if the power management device detects that the battery is low and needs to be charged, the power supply can not only drive the drive motor, but also charge the battery simultaneously.

[0119] In this embodiment, the system automatically determines whether the power supply is used to power the drive motor based on the load device's operating status. If so, the system automatically switches the drive motor to become the power source. This eliminates the need for users to manually switch power sources after connecting the power supply to the charger, improving the convenience of power source switching when the power supply is connected.

[0120] In another optional embodiment, the steps of the above embodiment for detecting whether the load device is in an operating state may specifically include the following steps:

[0121] Check whether the brake switch of the load device is in a failed state; if the brake switch of the load device is in a failed state, it means that the load device is in a working state.

[0122] The operating state of a load device is generally controlled by a brake switch. When the brake switch is in the valid state, the load device is braked and cannot operate; when the brake switch is in the invalid state, the load device is not braked and is in the operating state.

[0123] In this embodiment, a switch signal of the brake switch is obtained, and the switch signal is analyzed to determine whether the brake switch is in a failed state. If it is determined that the brake switch is in a failed state, it indicates that the load device is in a working state.

[0124] In this embodiment, the working status of the load device can be determined based on the brake switch of the load device, and there is no need to install a detector specifically for detecting the working status of the load device, which can effectively save costs and simplify the detection process.

[0125] Corresponding to the switching method of the driving device described above, the embodiment of the present application further discloses a switching device for the driving device, see Figure 7 As shown, the device includes:

[0126] An acquisition module 700 is configured to acquire a control signal for using a target driving device as a power source; wherein the target driving device includes an engine and a driving motor;

[0127] a detection module 710 for detecting, in response to a control signal, whether a transmission condition is met in which the target driving device is used as a power source without damaging the transmission system;

[0128] The switching unit 720 is configured to use the target driving device as the power source if a transmission condition is met in which the target driving device is used as the power source without damaging the transmission system.

[0129] The drive device switching device provided in this application comprises an acquisition module 700 that obtains a control signal for selecting a target drive device as a power source, a detection module 710 that detects whether the conditions exist for selecting the target drive device as a power source without damaging the transmission system, and a switching unit 720 that selects the target drive device as a power source if the conditions exist. The technical solution of this application enables the target drive device to be switched as a power source without damaging the transmission system, thus preventing damage to the transmission system structure of hybrid power engineering machinery when switching drive devices.

[0130] In another optional embodiment, if the target driving device is an engine, the detection module 710 of the above embodiment includes:

[0131] A first detection unit is used to detect whether the drive motor is in a stopped state;

[0132] The first determining unit is configured to determine, if the driving motor is in a stopped state, whether a transmission condition is met in which the engine is used as a power source without damaging the transmission system.

[0133] In another optional embodiment, if the target driving device is a driving motor, the detection module 710 of the above embodiment includes:

[0134] The second detection unit is used to detect whether the transmission system is in a hooking force state;

[0135] The second determining unit is configured to determine, if the transmission system is not in the hooking force state, whether a transmission condition for using the drive motor as a power source is met without damaging the transmission system.

[0136] In another optional embodiment, the switching device of the driving device in the above embodiment further includes:

[0137] A power-on signal acquisition module, used to obtain a power-on signal from a power supply;

[0138] A power-on purpose detection module is used to detect whether the power supply is used to power the driving operation of the drive motor;

[0139] A power take-off state detection module is used to detect whether the transmission system is in a power take-off state if the power supply is used to power the driving operation of the drive motor;

[0140] The control unit is used for controlling the engine to stop if the transmission system is in a power-taking state, and controlling the transmission system to cancel power-taking, and then controlling the drive motor to start.

[0141] In another optional embodiment, the power-on purpose detection module of the above embodiment includes:

[0142] The third detection unit is used to detect whether the load equipment is in an operating state;

[0143] The third determining unit is configured to determine that the power supply is used to supply power for the operation of the drive motor if the load device is in an operating state.

[0144] In another optional embodiment, the third detection unit of the above embodiment includes:

[0145] A detection subunit, used to detect whether the brake switch of the load equipment is in a failure state;

[0146] The determination subunit is used to indicate that the load device is in a working state if the brake switch of the load device is in a failure state.

[0147] The switching device of the drive device provided in this embodiment is based on the same concept as the switching method of the drive device provided in the embodiments of this application. It can execute the switching method of the drive device provided in any embodiment of this application and has the corresponding functional modules and beneficial effects of executing the switching method of the drive device. For technical details not fully described in this embodiment, please refer to the switching method of the drive device provided in the embodiments of this application and will not be repeated here.

[0148] In another optional embodiment, corresponding to the switching method of the driving device described above, the embodiment of the present application further discloses an electronic device, see Figure 8 As shown, the electronic device includes: one or more memories 800 , one or more processors 810 , and computer programs stored in the memories 800 and executed by the processors 810 .

[0149] The processor 810 may be a central processing unit (CPU) or other forms of processing units having data processing capabilities and / or instruction execution capabilities, and may control other components in the electronic device to perform desired functions.

[0150] The memory 800 may include one or more computer program products, which may include various forms of computer-readable storage media, such as volatile memory and / or non-volatile memory. Volatile memory may include, for example, random access memory (RAM) and / or cache memory (cache), etc. Non-volatile memory may include, for example, read-only memory (ROM), hard disk, flash memory, etc. One or more computer program instructions may be stored on the computer-readable storage medium, and the processor 810 may execute the program instructions to implement the switching method of the driving device of each embodiment of the present application above and / or other desired functions. Various contents such as input signals, signal components, noise components, etc. may also be stored in the computer-readable storage medium.

[0151] In one example, the electronic device may further include an input device 820 and an output device 830 , and these components are interconnected via a bus system and / or other forms of connection mechanisms (not shown).

[0152] The input device 820 may include a device for receiving data and information input by a user, such as a keyboard, a mouse, a camera, a scanner, a light pen, a voice input device, a touch screen, a pedometer, or a gravity sensor.

[0153] The output device 830 may be a device that outputs various information to the outside, such as a display, a speaker, a printer, a communication network and its connected remote output device, etc.

[0154] Of course, to simplify, Figure 8Only some of the components in the electronic device related to the present application are shown, and components such as a bus, an input / output interface, etc. are omitted. In addition, the electronic device may further include any other appropriate components according to specific application scenarios.

[0155] In another optional embodiment, in addition to the above-mentioned methods and devices, the embodiments of the present application may also be a computer program product, which includes computer program instructions, which, when executed by a processor, enable the processor to execute the steps of the switching method of the driving device according to various embodiments of the present application described in the above-mentioned "Exemplary Method" section of this specification.

[0156] The computer program product may be written in any combination of one or more programming languages to implement the program code for performing the operations of the embodiments of the present application, including object-oriented programming languages such as Java, C++, and conventional procedural programming languages such as "C" or similar programming languages. The program code may be executed entirely on the user's computing device, partially on the user's computing device, as a standalone software package, partially on the user's computing device and partially on a remote computing device, or entirely on a remote computing device or server.

[0157] In addition, in another optional embodiment, the embodiment of the present application may also be a computer-readable storage medium on which computer program instructions are stored. When the computer program instructions are executed by the processor, the processor 810 executes the steps of the switching method of the driving device according to various embodiments of the present application described in the above "Exemplary Method" section of this specification.

[0158] Computer readable storage media can adopt any combination of one or more readable media. The readable medium can be a readable signal medium or a readable storage medium. The readable storage medium can, for example, include but is not limited to a system, device or component of electricity, magnetism, light, electromagnetic, infrared, or semiconductor, or any combination thereof. More specific examples (non-exhaustive list) of readable storage media include: an electrical connection with one or more wires, a portable disk, a hard disk, a random access memory (RAM), a read-only memory (ROM), an erasable programmable read-only memory (EPROM or flash memory), an optical fiber, a portable compact disk read-only memory (CD-ROM), an optical storage device, a magnetic storage device, or any suitable combination thereof.

[0159] In another optional embodiment, if Figure 9 As shown, this embodiment also provides a driving system, including a driving motor 900, an engine 910 and the above control system 920.

[0160] The drive motor 900 and the engine 910 are both connected to the control system 920. Specifically, the drive motor 900 is connected to the motor control device of the control system 920, and the engine 910 is connected to the engine control device of the control system 920.

[0161] In another optional embodiment, this embodiment further provides an engineering machine including the drive system of the above embodiment. The engineering machine of this embodiment can switch the target drive device to the power source without damaging the transmission system, thereby preventing damage to the transmission system structure of the engineering machine with a hybrid power source when switching the drive device.

[0162] The basic principles of the present application have been described above in conjunction with specific embodiments. However, it should be noted that the advantages, strengths, and effects mentioned in this application are merely illustrative and not restrictive, and it should not be assumed that these advantages, strengths, and effects are required of each embodiment of this application. In addition, the specific details disclosed above are merely illustrative and facilitating understanding, and are not restrictive. The above details do not limit this application to necessarily being implemented using the above specific details.

[0163] The block diagrams of the devices, devices, equipment, and systems involved in this application are merely illustrative examples and are not intended to require or imply that they must be connected, arranged, or configured in the manner shown in the block diagrams. As will be appreciated by those skilled in the art, these devices, devices, equipment, and systems can be connected, arranged, or configured in any manner. Words such as "include," "comprise," "have," and the like are open-ended words, meaning "including but not limited to," and can be used interchangeably therewith. The words "or" and "and" used herein refer to the words "and / or" and can be used interchangeably therewith, unless the context clearly indicates otherwise. The word "such as" used herein refers to the phrase "such as but not limited to," and can be used interchangeably therewith.

[0164] It should also be noted that in the apparatus, device, and method of the present application, each component or each step can be decomposed and / or recombined, and such decomposition and / or recombination should be regarded as equivalent solutions of the present application.

[0165] The above description of the disclosed aspects is provided to enable any person skilled in the art to make or use the present application. Various modifications to these aspects will be readily apparent to those skilled in the art, and the general principles defined herein may be applied to other aspects without departing from the scope of the present application. Therefore, the present application is not intended to be limited to the aspects shown herein, but rather to be accorded the widest scope consistent with the principles and novel features disclosed herein.

[0166] It should be understood that the qualifiers "first", "second", "third", "fourth", "fifth" and "sixth" used in the description of the embodiments of the present application are only used to more clearly illustrate the technical solutions and cannot be used to limit the scope of protection of the present application.

[0167] The above description has been provided for the purpose of illustration and description. Furthermore, this description is not intended to limit the embodiments of the present application to the forms disclosed herein. Although a number of example aspects and embodiments have been discussed above, those skilled in the art will recognize certain variations, modifications, alterations, additions, and sub-combinations thereof.

Claims

1. A method for switching a driving device, characterized in that: include: Obtaining a control signal for using a target drive device of the engineering machinery as a power source; wherein the target drive device includes an engine and a drive motor; In response to the control signal, detecting whether a transmission condition is met in which the target drive device is used as a power source without damaging a transmission system; If the transmission conditions for using the target driving device as the power source are met without damaging the transmission system, the target driving device is used as the power source for the load device of the engineering machinery; When the engine serves as the power source of the load device, the drive motor is used to transmit the power of the engine; when the drive motor serves as the power source of the load device, the drive motor directly drives the load device.

2. The method according to claim 1, characterized in that If the target driving device is an engine, the detecting whether the transmission conditions for using the target driving device as a power source without damaging the transmission system are met includes: Detecting whether the drive motor is in a stopped state; If the drive motor is in a stopped state, it is determined that a transmission condition is met in which the engine is used as the power source without damaging the transmission system.

3. The method according to claim 1, characterized in that If the target driving device is a driving motor, the detecting whether the transmission conditions for using the target driving device as a power source without damaging the transmission system are met includes: detecting whether the transmission system is in a hook-and-take-off state; If the transmission system is not in the power-taking state, it is determined that a transmission condition is met in which the drive motor is used as the power source without damaging the transmission system.

4. The method according to claim 1, wherein Also includes: Obtain the power-on signal of the power supply; detecting whether the power supply is used to supply power for the driving operation of the driving motor; If the power supply is used to power the driving operation of the drive motor, detecting whether the transmission system is in a hooking force state; If the transmission system is in a power-taking state, after controlling the engine to stop and controlling the transmission system to cancel power taking, the drive motor is controlled to start.

5. The method according to claim 4, characterized in that The detecting whether the power supply is used to supply power for the driving operation of the driving motor includes: Check whether the load equipment is in working state; If the load device is in an operating state, it is determined that the power supply is used to supply power for the operation of the drive motor.

6. The method according to claim 5, characterized in that The detecting whether the load equipment is in an operating state includes: Detecting whether the brake switch of the load device is in a failed state; If the brake switch of the load device is in a failed state, it means that the load device is in a working state.

7. A switching device for a driving device, characterized in that: include: an acquisition module, configured to acquire a control signal for using a target drive device of the engineering machinery as a power source, wherein the target drive device includes an engine and a drive motor; a detection module, configured to detect, in response to the control signal, whether a transmission condition is met in which the target drive device is used as a power source without damaging the transmission system; a switching unit configured to use the target driving device as the power source for the load device of the engineering machinery if a transmission condition is met in which the target driving device is used as the power source without damaging the transmission system; When the engine serves as the power source of the load device, the drive motor is used to transmit the power of the engine; when the drive motor serves as the power source of the load device, the drive motor directly drives the load device.

8. An electronic device comprising a memory, a processor, and a computer program stored in the memory and executed by the processor, wherein: When the processor executes the computer program, the steps of the switching method of the driving device according to any one of claims 1 to 6 are implemented.

9. A control system, characterized in that: comprising a body control device, a motor control device, an engine control device, a power management device, and the electronic device according to claim 8; The electronic equipment is respectively connected to the vehicle body control device, the motor control device, the power management device, and the power take-off device; The vehicle body control device is connected to the power take-off device and the engine control device respectively; The engine is connected to an engine control device of the control system.

10. An engineering machine, characterized in that: Includes the control system according to claim 9.

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