CN117162772A

CN117162772A - Hybrid power system, vehicle-mounted pump and control method of hybrid power system

Info

Publication number: CN117162772A
Application number: CN202311121656.4A
Authority: CN
Inventors: 耿浩然; 李志强; 李家荣
Original assignee: Hunan Deutz Power Co Ltd
Current assignee: Hunan Deutz Power Co Ltd
Priority date: 2023-08-31
Filing date: 2023-08-31
Publication date: 2023-12-05

Abstract

The invention provides a hybrid power system, a vehicle-mounted pump and a control method of the hybrid power system, wherein the hybrid power system comprises: the system comprises an engine, a clutch, an operation motor, an upper motor controller, a rectifying distribution box, a hydraulic system and an upper whole vehicle controller; the loading whole vehicle controller comprises: the plug-in pumping mode control module is used for sending a plug-in loop conduction request to the rectifying distribution box if the rectifying distribution box is externally connected with a power supply under the condition that the working mode request instruction is a plug-in pumping mode request instruction; under the condition that an inserting circuit of the rectifying distribution box is conducted, monitoring first electric control bus voltage in the inserting circuit, and if the first electric control bus voltage is larger than or equal to a preset first voltage threshold value after a first preset time threshold value and the power of an external power supply is smaller than a preset power threshold value, controlling an engine and the external power supply to supply power to a hydraulic system through an operation motor. The condition of insufficient power of an external power supply in a plug-in pumping mode can be well made up.

Description

Hybrid power system, vehicle-mounted pump and control method of hybrid power system

Technical Field

The invention relates to the technical field of engineering machinery, in particular to a hybrid power system, a vehicle-mounted pump and a control method of the hybrid power system.

Background

At present, in the technical field of engineering machinery, a pure fuel engine power system, a diesel-electric dual-power system and a pure electric power system are limited by a use place in working conditions of non-roads, and the engine of the power system has low fuel efficiency and large fuel consumption due to large and complex working condition changes. Compared with the power system, the hybrid vehicle-mounted pump system can provide various working mode selections, can be suitable for most use scenes, can regulate and control the engine and the operation motor to work in an optimal energy consumption area through reasonable working mode selections, and reduces the energy consumption of the whole system.

However, the hybrid vehicle-mounted pump system requires a large power when pumping concrete at a high floor, and the work motor needs a long time to operate at a high power. In the prior art, under the condition of having an external power supply, the external power supply is only utilized to provide power for the hybrid vehicle-mounted pump system. However, the control mode has higher power requirement on the external power supply, and when the external power supply has insufficient power, the situation that the plug-in power cannot be used for pumping or pipe plugging is caused, so that the use scene is limited.

Disclosure of Invention

The invention provides a hybrid power system, a vehicle-mounted pump and a control method of the hybrid power system, which are used for solving the problems that in the prior art, under the condition of an external power supply, the external power supply is only used for providing power for the hybrid power vehicle-mounted pump system, so that when the power of the external power supply is insufficient, the situation that the power cannot be used for pumping or pipe plugging is caused by insufficient power, and the use scene is limited.

The present invention provides a hybrid system including:

the system comprises an engine, a clutch, an operation motor, an upper motor controller, a rectifying distribution box, a hydraulic system and an upper whole vehicle controller; the engine, the clutch, the operation motor and the hydraulic system are sequentially connected, the operation motor, the upper motor controller and the rectifying distribution box are sequentially connected, and the engine, the clutch, the operation motor, the upper motor controller, the rectifying distribution box and the hydraulic system are respectively connected with the upper whole vehicle controller;

the loading whole vehicle controller comprises:

the instruction receiving module is used for receiving a working mode request instruction;

the plug-in pumping mode control module is used for sending a plug-in loop conduction request to the rectifying distribution box if the rectifying distribution box is externally connected with a power supply under the condition that the working mode request instruction is a plug-in pumping mode request instruction; and under the condition that a plug-in circuit of the rectifying distribution box is conducted, monitoring a first electric control bus voltage in the plug-in circuit, and if the first electric control bus voltage is larger than or equal to a preset first voltage threshold value after a first preset time threshold value and the power of the external power supply is smaller than a preset power threshold value, controlling the engine and the external power supply to supply energy to the hydraulic system through the operation motor so as to carry out plug-in pumping.

Optionally, the method further comprises: the power battery is connected with the rectifying distribution box;

the loading whole vehicle controller is further used for directly carrying out electric plugging and pumping if the voltage of the first electric control bus is greater than or equal to the first voltage threshold and the power of the external power supply is greater than or equal to the power threshold after the first preset time threshold; in the process of carrying out the plug-in pumping, if the electric quantity of the power battery is smaller than or equal to a preset first electric quantity threshold value and larger than a preset second electric quantity threshold value, determining that the power battery has low electric quantity faults and generating low electric quantity fault reminding; if the electric quantity of the power battery is smaller than or equal to the second electric quantity threshold value, sending a circuit plug-in disconnection instruction to the rectifying distribution box under the condition that a high-voltage power-on completion signal of the power battery is received; under the condition that the plug-in circuit is disconnected, a lithium circuit turn-on instruction is sent to the rectifying distribution box; under the condition that a lithium circuit of the rectifying distribution box is conducted, if the voltage of a second electric control bus of the lithium circuit is larger than or equal to a preset second voltage threshold after a second preset time threshold, controlling the power battery to supply energy to the operation motor through the lithium circuit, and controlling the operation motor to supply energy to the hydraulic system so as to carry out lithium electric pumping; in the lithium battery pumping process, the clutch is in a closed state, the engine is controlled to sequentially pass through the clutch, the operation motor and the lithium battery loop, the power battery is charged, and the first electric quantity threshold value is larger than the second electric quantity threshold value.

Optionally, the loading whole vehicle controller further includes: the pure engine pumping mode control module is used for starting the engine, closing the clutch and controlling the engine to supply energy to the hydraulic system through the operation motor so as to pump the pure engine under the condition that the working mode request command is the pure engine pumping mode request command; in the process of pumping the pure engine, if the electric quantity of the power battery is smaller than or equal to the first electric quantity threshold value and larger than the second electric quantity threshold value, determining that the power battery has low electric quantity faults and generating low electric quantity fault reminding; if the electric quantity of the power battery is smaller than or equal to the second electric quantity threshold value, sending the lithium circuit conduction instruction to the rectifying distribution box under the condition that a high-voltage power-on completion signal of the power battery is received; under the condition that the lithium battery loop is conducted, lithium battery pumping is conducted; and in the process of pumping the lithium battery, if the electric quantity of the power battery is larger than a preset third electric quantity threshold value, re-entering a pure engine pumping mode, and pumping the pure engine.

Optionally, the loading whole vehicle controller further includes: the lithium electric pumping mode control module is used for receiving the high-voltage power-on completion signal of the power battery under the condition that the working mode request instruction is a lithium electric pumping mode request instruction; based on the high-voltage power-on completion signal, a lithium circuit conduction instruction is sent to the rectifying distribution box; and under the condition that the lithium battery loop is conducted, if the voltage of the second electric control bus of the lithium battery loop is greater than or equal to the second voltage threshold after a second preset time threshold, controlling the power battery to supply energy to the operation motor through the lithium battery loop, and controlling the operation motor to supply energy to the hydraulic system so as to carry out lithium electric pumping.

Optionally, the loading whole vehicle controller further includes: the parking charging mode control module is used for receiving the high-voltage power-on completion signal of the power battery under the condition that the working mode request instruction is a parking charging request instruction, and sending the lithium circuit conduction instruction to the rectifying distribution box based on the high-voltage power-on completion signal; and under the condition that the lithium battery loop is conducted, if the voltage of the second electric control bus of the lithium battery loop is greater than or equal to the second voltage threshold after the second preset time threshold, controlling the engine to sequentially pass through the clutch, the operation motor and the lithium battery loop so as to charge the power battery.

Optionally, the rectifying distribution box includes: an insertion circuit;

the plug-in circuit includes: the device comprises a rectifying module, a first main positive relay, a reactor, a first pre-charging relay and at least one first pre-charging resistor; the input end of the rectifying module is used for being connected with the external power supply, the positive output end of the rectifying module is connected with the input end of the reactor, the output end of the reactor is connected with one end of the first main positive relay, the other end of the first main positive relay is connected with the first end of the operation motor, one end, close to the reactor, of the first main positive relay is connected with the first pre-charging relay, one end, far away from the first main positive relay, of the first pre-charging relay is connected with the first pre-charging resistor, one end, far away from the first pre-charging relay, of the first pre-charging resistor is connected with one end, close to the operation motor, of the first main positive relay, and the negative output end of the rectifying module is connected with the second end of the operation motor.

Optionally, the rectifying distribution box further includes: a lithium circuit;

the lithium battery circuit includes: a second main positive relay, a second pre-charge relay, and at least one second pre-charge resistor; one end of the second main positive relay is connected with the positive electrode of the power battery, the other end of the second main positive relay is connected with the first end of the operation motor, one end of the second pre-charging relay is connected with one end of the second main positive relay, which is close to the power battery, the other end of the second pre-charging relay is connected with the second pre-charging resistor, one end of the second pre-charging resistor, which is far away from the second pre-charging relay, is connected with one end of the second main positive relay, which is close to the operation motor, and the negative electrode of the power battery is connected with the second end of the operation motor.

The present invention also provides a hybrid vehicle pump comprising: at least one loading mechanism and the hybrid power system according to any one of the above, wherein the hydraulic system is respectively connected with each loading mechanism and is used for supplying energy to the loading mechanism, and the loading mechanism is a pumping mechanism, a slewing mechanism, an amplitude changing mechanism, a hoisting mechanism or a telescopic arm.

The invention also provides a control method of the hybrid power system, which comprises the following steps:

receiving a working mode request instruction;

if the work mode request instruction is a plug-in pumping mode request instruction, sending a plug-in loop conduction request to the rectification distribution box if the rectification distribution box is externally connected with a power supply; and under the condition that a plug-in circuit of the rectifying distribution box is conducted, monitoring a first electric control bus voltage in the plug-in circuit, and if the first electric control bus voltage is larger than or equal to a preset first voltage threshold value after a first preset time threshold value and the power of the external power supply is smaller than a preset power threshold value, controlling the engine and the external power supply to supply energy to the hydraulic system through the operation motor so as to carry out plug-in pumping.

The invention also provides an electronic device comprising a memory, a processor and a computer program stored on the memory and executable on the processor, the processor implementing a control method of the hybrid system as described above when executing the program.

The invention has the beneficial effects that: the invention provides a hybrid power system, a vehicle-mounted pump and a control method of the hybrid power system, wherein an engine, a clutch, an operation motor, an upper motor controller, a rectifying distribution box, a hydraulic system and an upper whole vehicle controller are arranged; the engine, the clutch, the operation motor and the hydraulic system are sequentially connected, the operation motor, the upper motor controller and the rectifying distribution box are sequentially connected, and the engine, the clutch, the operation motor, the upper motor controller, the rectifying distribution box and the hydraulic system are respectively connected with the upper whole vehicle controller. And receiving a working mode request instruction by using an instruction receiving module in the whole vehicle controller; the method comprises the steps that a plug-in pumping mode control module in an on-board vehicle controller is utilized, and if a work mode request instruction is a plug-in pumping mode request instruction, a plug-in loop conduction request is sent to a rectifying distribution box if the rectifying distribution box is externally connected with a power supply; under the condition that a power-in loop of the rectifying distribution box is conducted, monitoring first electric control bus voltage in the power-in loop, and if the first electric control bus voltage is larger than or equal to a preset first voltage threshold value after a first preset time threshold value and the power of an external power supply is smaller than a preset power threshold value, controlling an engine and the external power supply to supply power to a hydraulic system through an operation motor so as to carry out power-in and pumping. The external power supply power system can better make up the condition of insufficient power of an external power supply in a plug-in pumping mode, has higher degree of automation and lower cost, and meets various use scenes.

Drawings

In order to more clearly illustrate the invention or the technical solutions of the prior art, the following description will briefly explain the drawings used in the embodiments or the description of the prior art, and it is obvious that the drawings in the following description are some embodiments of the invention, and other drawings can be obtained according to the drawings without inventive effort for a person skilled in the art.

FIG. 1 is a schematic diagram of a hybrid powertrain according to one embodiment of the present invention;

FIG. 2 is a schematic diagram of a hybrid powertrain system according to the present disclosure;

fig. 3 is a schematic structural diagram of a rectifying distribution box in the hybrid power system provided by the invention;

FIG. 4 is a flow chart of a method of controlling a hybrid powertrain provided by the present invention;

FIG. 5 is a flow chart of an exemplary embodiment of a method of controlling a hybrid powertrain provided by the present invention;

fig. 6 is a schematic structural diagram of an electronic device provided by the present invention.

Detailed Description

For the purpose of making the objects, technical solutions and advantages of the present invention more apparent, the technical solutions of the present invention will be clearly and completely described below with reference to the accompanying drawings, and it is apparent that the described embodiments are some embodiments of the present invention, not all embodiments. All other embodiments, which can be made by those skilled in the art based on the embodiments of the invention without making any inventive effort, are intended to be within the scope of the invention.

By way of example, the hybrid system, the vehicle-mounted pump, and the control method of the hybrid system provided by the present invention are described below with reference to fig. 1 to 6.

Referring to fig. 1, the hybrid system provided in the present embodiment includes:

engine 110, clutch 120, work motor 130, on-board motor controller 150, rectifying power box 160 (PDU, power Distribution Unit), hydraulic system 140, and on-board vehicle controller 170 (HCU, hybrid Control Unit); the engine 110, the clutch 120, the working motor 130 and the hydraulic system 140 are sequentially connected, the working motor 130, the upper motor controller 150 and the rectifying distribution box 160 are sequentially connected, and the engine 110, the clutch 120, the working motor 130, the upper motor controller 150, the rectifying distribution box 160 and the hydraulic system 140 are respectively connected with the upper vehicle controller 170; specifically, the engine 110, the clutch 120, the work motor 130, and the hydraulic system 140 may be sequentially connected by twin wires. The engine 110 is a fossil fuel type power plant, which is one of the power sources of the hybrid system in the present embodiment, and supplies energy for hydraulic pressure. The clutch 120 is normally provided with three states of closed, open and semi-interlocked, and its initial state is normally a closed state. The work motor 130 is configured to convert electrical energy provided by a power source into mechanical energy to power the hydraulic system 140. The rectifying distribution box 160 is connected with an external power supply 180 or an external power grid, and supplies power to the hydraulic system 140 through the upper motor controller 150 and the operation motor 130, and the external power supply 180 can serve as another power source of the hybrid power system in the embodiment. In some embodiments, a mechanical transmission is also coupled between work motor 130 and hydraulic system 140 for energy transmission. Further, the mechanical transmission device can be replaced by a speed changer device and the like according to actual requirements.

The loading vehicle controller 170 includes:

the instruction receiving module is used for receiving the working mode request instruction. Specifically, the operation mode request instruction includes: a plug-in pumping mode request command, a pure engine pumping mode request command, a lithium-ion pumping mode request command, and a park charge request command. I.e., the on-board whole vehicle controller 170 receives an operation mode request instruction issued by a user or driver. The driver can select different working modes according to actual conditions, and the working modes comprise: the system comprises a plug-in electric pumping mode, a pure engine pumping mode, a lithium electric pumping mode and a parking charging mode, so that corresponding mode request instructions are sent out.

The plug-in pumping mode control module is configured to send a plug-in loop conduction request to the rectifying distribution box 160 if the rectifying distribution box 160 has an external power supply 180 when the working mode request instruction is a plug-in pumping mode request instruction; under the condition that the circuit of the rectification block terminal 160 is turned on, the voltage of the first electric control bus in the circuit is monitored (that is, when the circuit of the rectification block terminal 160 is turned on, the voltage of the first electric control bus in the circuit is monitored, and timing is started), if after a first preset time threshold, the voltage of the first electric control bus is greater than or equal to a preset first voltage threshold, and the power of the external power supply 180 is less than a preset power threshold, the engine 110 and the external power supply 180 are controlled to supply energy to the hydraulic system 140 through the operation motor 130, so as to perform electric pump plugging. Namely, under the condition that the power of the external power supply 180 is insufficient, the engine 110 is adopted as the energy supplement of the external power supply 180, so that the pumping process in the plug-in pumping mode is realized. The situation that pumping or pipe blocking cannot be performed by using plug-in power due to insufficient power of the external power supply 180 is avoided, and more use scenes can be met.

It should be noted that the power threshold may be set according to practical situations, such as 100kW (kilowatts), or the like. The first voltage threshold may be set according to practical situations, such as 420V. The first electrically controlled bus refers to the line connecting between the electrical circuit and the on-board motor controller 150.

It should be further noted that the hybrid system in the above embodiment is used to power the upper package of the hybrid vehicle pump.

Referring to fig. 2, in some embodiments, the hybrid system further includes: a power battery 210, the power battery 210 is connected with the rectifying distribution box 160. The power battery 210 serves as yet another power source of the hybrid system.

In some embodiments, the power cell 210 may be connected to the rectifying distribution box 160 through a preset chassis integration controller 220.

The loading vehicle controller 170 is further configured to directly perform power-on/power-off pumping if the first electric control bus voltage is greater than or equal to the first voltage threshold and the power of the external power supply 180 is greater than or equal to the power threshold after the first preset time threshold; in the process of performing the plug-in pumping, if the electric quantity of the power battery 210 is smaller than or equal to a preset first electric quantity threshold and larger than a preset second electric quantity threshold, determining that the power battery 210 has a low electric quantity fault, and generating a low electric quantity fault reminder; if the power of the power battery 210 is less than or equal to the second power threshold, sending a power-on circuit disconnection instruction to the rectifying distribution box 160 when a high-voltage power-on completion signal of the power battery 210 is received (i.e., the high voltage on the power battery 210 is completed); transmitting a lithium circuit on command to the rectifying distribution box 160 in the case that the plug-in circuit is disconnected; if the lithium electric circuit of the rectifying distribution box 160 is turned on and the second electric control bus voltage of the lithium electric circuit is greater than or equal to the preset second voltage threshold after the second preset time threshold, controlling the power battery 210 to supply energy to the operation motor 130 through the lithium electric circuit and controlling the operation motor 130 to supply energy to the hydraulic system 140 so as to perform lithium electric pumping; in the process of pumping the lithium battery, the clutch 120 is in a closed state, the engine 110 is controlled to charge the power battery 210 sequentially through the clutch 120, the operation motor 130 and the lithium battery loop, and the first electric quantity threshold is greater than the second electric quantity threshold. The first voltage threshold and the second voltage threshold are equal.

Specifically, the first electric quantity threshold and the second electric quantity threshold may be set according to actual requirements, for example, the first electric quantity threshold is 20%, the second electric quantity threshold is 15%, and so on. In the foregoing embodiment, if the electric quantity of the power battery 210 is smaller than or equal to the preset first electric quantity threshold and greater than the preset second electric quantity threshold in the process of performing the plug-in pumping, it is determined that the power battery 210 has a low electric quantity fault, and an electric quantity low fault reminder is generated, so that a user or a driver can be reminded of the low electric quantity fault in real time. And, if the electric quantity of the power battery 210 is less than or equal to the second electric quantity threshold, the power-plug pumping mode is switched to the lithium-ion pumping mode, and meanwhile, the power battery 210 is charged by the engine 110, so that the power battery 210 is prevented from being too low in electric quantity, and the mode switching is more reasonable. The second electric control bus refers to a wire connecting the lithium circuit and the operation motor.

In some embodiments, the on-board vehicle controller 170 further includes: an engine-only pumping mode control module for starting the engine 110, closing the clutch 120, and controlling the engine 110 to supply power to the hydraulic system 140 through the work motor 130 for engine-only pumping if the work mode request command is an engine-only pumping mode request command; in the process of pumping the pure engine, if the electric quantity of the power battery 210 is smaller than or equal to the first electric quantity threshold and larger than the second electric quantity threshold, determining that the power battery 210 has a low electric quantity fault, and generating a low electric quantity fault reminder; if the electric quantity of the power battery 210 is less than or equal to the second electric quantity threshold, sending the lithium circuit conduction instruction to the rectifying distribution box under the condition that a high-voltage power-on completion signal of the power battery 210 is received; under the condition that the lithium electric loop is conducted, lithium electric pumping is conducted (namely, timing is started when the lithium electric loop is conducted, if the voltage of a second electric control bus of the lithium electric loop is greater than or equal to a preset second voltage threshold value after a second preset time threshold value, the power battery is controlled to supply energy to the operation motor through the lithium electric loop, and the operation motor is controlled to supply energy to the hydraulic system so as to conduct lithium electric pumping); in the process of pumping the lithium battery, if the electric quantity of the power battery 210 is greater than a preset third electric quantity threshold, the pure engine pumping mode is re-entered, and pure engine pumping is performed.

Specifically, if the electric quantity of the power battery 210 is less than or equal to the second electric quantity threshold in the pure engine pumping mode, the pure engine pumping mode is switched to the lithium electric pumping mode, and the lithium electric pumping mode is adopted for pumping. The power battery 210 is charged by the engine 110 while the lithium battery is pumped. If the electric quantity of the subsequent power battery 210 is greater than the third electric quantity threshold value, the pure engine pumping mode is re-entered, and pure engine pumping is performed. The third power threshold may be set according to practical situations, such as 65%, and will not be described herein.

In some embodiments, the on-board vehicle controller 170 further includes: the lithium electric pumping mode control module is configured to receive the high-voltage power-on completion signal of the power battery 210 when the operation mode request instruction is a lithium electric pumping mode request instruction; based on the high voltage power-on completion signal, a lithium circuit conduction instruction is sent to the rectifying distribution box 160; if the second electric control bus voltage of the lithium battery loop is greater than or equal to the second voltage threshold after a second preset time threshold, the power battery 210 is controlled to supply power to the operation motor 130 through the lithium battery loop, and the operation motor 130 is controlled to supply power to the hydraulic system 140 to perform lithium electric pumping.

Specifically, the first preset time threshold and the second preset time threshold are equal. The first preset time threshold and the second preset time threshold can be set according to practical situations, such as 2 seconds. The lithium electric pumping mode is adopted for pumping, so that the lithium electric pumping requirement of a driver can be met.

In some embodiments, the on-board vehicle controller 170 further includes: the parking charging mode control module is configured to receive the high-voltage power-on completion signal of the power battery 210, and send the lithium-ion circuit conduction instruction to the rectifying distribution box 160 based on the high-voltage power-on completion signal if the operation mode request instruction is a parking charging request instruction; under the condition that the lithium battery circuit is turned on, if the second electric control bus voltage of the lithium battery circuit is greater than or equal to the second voltage threshold after the second preset time threshold, the engine 110 is controlled to sequentially pass through the clutch 120, the operation motor 130 and the lithium battery circuit to charge the power battery 210. It should be noted that the difference between the parking charging mode and the lithium-ion pumping mode is that the parking charging mode only charges the power battery 210, while the lithium-ion pumping mode charges the power battery 210 while pumping lithium, i.e. the power battery 210 charges and discharges simultaneously.

Referring to fig. 3, the rectifying distribution box 160 includes: and (5) inserting a circuit.

The plug-in circuit includes: a rectification module 310, a first main positive relay 320, a reactor 330, a first pre-charge relay 340, and at least one first pre-charge resistor R1; the input end of the rectifying module 310 is used for being connected with the external power supply 180 (the external power supply 180 may be a three-phase (U-phase, V-phase and W-phase) power supply), the positive output end of the rectifying module 310 is connected with the input end of the reactor 330, the output end of the reactor 330 is connected with one end of the first main positive relay 320, the other end of the first main positive relay 320 is connected with the first end of the operation motor 130, one end of the first main positive relay 320 close to the reactor 330 is connected with the first pre-charging relay 340, one end of the first pre-charging relay 340 away from the first main positive relay 320 is connected with the first pre-charging resistor R1, one end of the first pre-charging resistor R1 away from the first pre-charging relay 340 is connected with one end of the first main positive relay 320 close to the operation motor 130, and the negative output end of the rectifying module 310 is connected with the second end of the operation motor 130.

It should be noted that, in this embodiment, by providing the reactor 330, stability of the current in the plug-in circuit can be better ensured. The first main positive relay 320, the first pre-charging relay 340, and at least one first pre-charging resistor R1 (in fig. 4, 2 first pre-charging resistors R1 are exemplarily included, and in an actual implementation process, the number of the first pre-charging resistors R1 may be 1 or 3, etc.) form a pre-charging loop, so as to ensure the safety of the plug-in loop as much as possible. Specifically, the step of conducting the insertion circuit includes: first, the first pre-charging relay 340 is closed, the power-on loop is conducted, and a part of voltage is divided by the first pre-charging resistor R1; under the condition that the plug-in circuit is normally conducted, the first main positive relay 320 is closed again; finally, the first pre-charge relay 340 is opened to complete the step of switching on the plug-in circuit.

It should be further noted that, the circuit may be connected to the operation motor 130 through a preset upper motor controller 150, that is, in the above embodiment, the other end of the first main positive relay 320 may be connected to the first end of the operation motor 130 through the upper motor controller 150, and the negative output end of the rectifying module 310 may be connected to the second end of the operation motor 130 through the upper motor controller 150.

Further, the rectifying distribution box 160 further includes: a lithium circuit.

The lithium battery circuit includes: a second main positive relay 350, a second pre-charge relay 360, and at least one second pre-charge resistor R2; one end of the second main positive relay 350 is connected with the positive electrode of the power battery 210, the other end of the second main positive relay 350 is connected with the first end of the operation motor 130, one end of the second pre-charging relay 360 is connected with one end of the second main positive relay 350, which is close to the power battery 210, the other end of the second pre-charging relay 360 is connected with the second pre-charging resistor R2, one end of the second pre-charging resistor R2, which is far away from the second pre-charging relay 360, is connected with one end of the second main positive relay 350, which is close to the operation motor 130, and the negative electrode of the power battery 210 is connected with the second end of the operation motor 130.

The second main positive relay 350, the second pre-charging relay 360, and at least one second pre-charging resistor R2 (2 second pre-charging resistors R2 are exemplarily included in fig. 4), and in an actual implementation process, the number of the second pre-charging resistors R2 may be 1 or 3, etc.), which form a pre-charging loop, so as to ensure the safety of the plug-in loop as much as possible. The conduction principle of the lithium battery circuit is similar to that of the plug-in circuit in the above embodiment. The second pre-charging relay 360 is closed firstly, so that the lithium circuit is conducted, the second main relay is closed under the condition that the lithium circuit is normally conducted, and finally, the second pre-charging relay 360 is opened, so that the conduction of the lithium circuit is completed.

In the above embodiment, by setting the power-on circuit and the lithium circuit with higher stability and safety in the rectifying distribution box 160, the requirements of various operation scenes can be satisfied.

It should be noted that, the lithium circuit may be connected to the power battery 210 through a preset chassis integrated controller 220, that is, in the above embodiment, one end of the second main positive relay 450 may be connected to the positive electrode of the power battery 210 through the chassis integrated controller 220, and the negative electrode of the power battery 210 may be connected to the second end of the working motor 130 through the chassis integrated controller 220.

The power battery 210 may be connected to the rectifying distribution box 160 through a preset chassis all-in-one controller 220

The present embodiment also provides a hybrid vehicle-mounted pump including: at least one loading mechanism and a hybrid power system according to any one of the above, wherein the hydraulic system 140 is respectively connected with each loading mechanism and is used for supplying energy to the loading mechanism, and the loading mechanism is a pumping mechanism, a slewing mechanism, an amplitude changing mechanism, a hoisting mechanism or a telescopic arm.

The control method of the hybrid system provided by the invention is described below, and the control method of the hybrid system described below and the hybrid system described above can be referred to correspondingly to each other.

Referring to fig. 4, the control method of the hybrid power system provided in the embodiment includes:

s410: and receiving a working mode request instruction.

S420: if the operation mode request command is a plug-in pumping mode request command, if the rectifying distribution box 160 is already externally connected with the power supply 180, a plug-in loop conduction request is sent to the rectifying distribution box 160; under the condition that the plug-in circuit of the rectifying distribution box 160 is conducted, a first electric control bus voltage in the plug-in circuit is monitored, and if the first electric control bus voltage is greater than or equal to a preset first voltage threshold after a first preset time threshold and the power of the external power supply is smaller than a preset power threshold, the engine 110 and the external power supply 180 are controlled to supply energy to the hydraulic system 140 through the operation motor 130 so as to perform plug-in electric pump transmission. The control method of the hybrid power system in the embodiment can better make up the condition of insufficient power of the external power supply 180 in the plug-in pumping mode, and has higher automation degree, lower cost and higher rationality.

In some embodiments, the step of monitoring the first electrically controlled bus voltage in the plug-in circuit of the rectifying power box 160 further includes, with the plug-in circuit being conductive: if the first electric control bus voltage is greater than or equal to the first voltage threshold after the first preset time threshold and the power of the external power supply is greater than or equal to the power threshold, direct plug-in pumping is performed; in the process of performing the plug-in pumping, if the electric quantity of the power battery 210 is smaller than or equal to a preset first electric quantity threshold and larger than a preset second electric quantity threshold, determining that the power battery 210 has a low electric quantity fault, and generating a low electric quantity fault reminder; if the electric quantity of the power battery 210 is less than or equal to the second electric quantity threshold value, sending a plug-in circuit breaking instruction to the rectifying distribution box 160 under the condition that a high-voltage power-on completion signal of the power battery 210 is received; transmitting a lithium circuit on command to the rectifying distribution box 160 in the case that the plug-in circuit is disconnected; if the lithium electric circuit of the rectifying distribution box 160 is turned on and the second electric control bus voltage of the lithium electric circuit is greater than or equal to the preset second voltage threshold after the second preset time threshold, controlling the power battery 210 to supply energy to the operation motor 130 through the lithium electric circuit and controlling the operation motor 130 to supply energy to the hydraulic system 140 so as to perform lithium electric pumping; in the process of pumping the lithium battery, the clutch 120 is in a closed state, the engine 110 is controlled to charge the power battery 210 sequentially through the clutch 120, the operation motor 130 and the lithium battery loop, and the first electric quantity threshold is greater than the second electric quantity threshold.

In some embodiments, further comprising:

starting the engine 110, closing the clutch 120, and controlling the engine 110 to power the hydraulic system 140 through the work motor 130 for engine-only pumping, in the case that the work mode request command is an engine-only pumping mode request command; in the process of pumping the pure engine, if the electric quantity of the power battery 210 is smaller than or equal to the first electric quantity threshold and larger than the second electric quantity threshold, determining that the power battery 210 has a low electric quantity fault, and generating a low electric quantity fault reminder; if the electric quantity of the power battery 210 is less than or equal to the second electric quantity threshold, sending the lithium circuit conduction instruction to the rectifying distribution box under the condition that a high-voltage power-on completion signal of the power battery 210 is received; under the condition that the lithium battery loop is conducted, lithium battery pumping is conducted; in the process of pumping the lithium battery, if the electric quantity of the power battery 210 is greater than a preset third electric quantity threshold, the pure engine pumping mode is re-entered, and pure engine pumping is performed.

In some embodiments, further comprising: receiving the high-voltage power-on completion signal of the power battery 210 when the operation mode request command is a lithium electric pumping mode request command; based on the high voltage power-on completion signal, a lithium circuit conduction instruction is sent to the rectifying distribution box 160; if the second electric control bus voltage of the lithium battery loop is greater than or equal to the second voltage threshold after a second preset time threshold, the power battery 210 is controlled to supply power to the operation motor 130 through the lithium battery loop, and the operation motor 130 is controlled to supply power to the hydraulic system 140 to perform lithium electric pumping.

In some embodiments, further comprising: receiving the high-voltage power-on completion signal of the power battery 210, and transmitting the lithium-ion circuit conduction instruction to the rectifying distribution box 160 based on the high-voltage power-on completion signal, in the case that the operation mode request instruction is a parking charging request instruction; under the condition that the lithium battery circuit is turned on, if the second electric control bus voltage of the lithium battery circuit is greater than or equal to the second voltage threshold after the second preset time threshold, the engine 110 is controlled to sequentially pass through the clutch 120, the operation motor 130 and the lithium battery circuit to charge the power battery 210.

For example, referring to fig. 5, the following steps may be employed for control of the hybrid system.

S510: and (5) powering on the key for self-checking. Specifically, after a key is powered on in the hybrid power system, all preset controllers are controlled to perform self-checking, self-checking results of all the preset controllers are obtained, and fault display is performed in a preset instrument based on the abnormal self-checking results under the condition that the self-checking results are abnormal. The preset controller includes: MCU (Microcontroller Unit, micro control module), ECU (Engine Control Unit, engine control module), DCU (Dosing Control Unit, urea injection control module) and PMS (Power Production Management System, energy management system). If all the self-test results are not abnormal, the process proceeds to step S520.

S520: and receiving a working mode request instruction. The working mode request command is a plug-in pumping mode request command, a pure engine pumping mode request command, a lithium-ion pumping mode request command or a parking charging request command.

S530: and judging whether the electric pumping mode request command is a plug-in electric pumping mode request command or not, namely judging whether the working mode request command is a plug-in electric pumping mode request command or not.

S5301: whether or not to externally connect the power supply 180. That is, it is determined whether the rectifying distribution box 160 has been externally connected to the power supply 180, specifically, whether the on-board vehicle controller 170 receives an externally connected electrical signal transmitted from the rectifying distribution box 160.

S5302: and sending a plug-in loop conduction request. If the rectifying distribution box 160 is externally connected with the power supply 180, a plug-in circuit conduction request is sent to the rectifying distribution box 160. The rectifying distribution box 160 turns on the plug-in circuit based on the plug-in circuit turn-on request.

S5303: and judging whether the plug-in circuit is conducted or not.

S5304: and carrying out plug-in pumping. Specifically, in the case that the power-on circuit of the rectifying distribution box 160 is turned on, a first electric control bus voltage in the power-on circuit is monitored, and if the first electric control bus voltage is greater than or equal to a preset first voltage threshold after a first preset time threshold and the power of the external power supply is less than a preset power threshold, the engine 110 and the external power supply 180 are controlled to supply power to the hydraulic system 140 through the operation motor 130 so as to perform power-on pumping. If the first electric control bus voltage is greater than or equal to the first voltage threshold after the first preset time threshold, and the power of the external power supply is greater than or equal to the power threshold, direct plug-in pumping is performed.

In the process of performing the plug-in pumping, if the electric quantity of the power battery 210 is less than or equal to a preset first electric quantity threshold and greater than a preset second electric quantity threshold, it is determined that the power battery 210 has a low electric quantity fault, and a low electric quantity fault reminder is generated.

S5305: it is determined whether the charge of the power cell 210 is less than or equal to the second charge threshold.

S5306: it is determined whether the power battery 210 completes the high-voltage power-up, i.e., whether a high-voltage power-up completion signal of the power battery 210 is received.

S5307: and sending a plug-in loop disconnection instruction. Specifically, if the power of the power battery 210 is less than or equal to the second power threshold, a power-on completion signal of the power battery 210 is received, and a power-off command is sent to the rectifying distribution box 160.

S5308: and judging whether the plug-in circuit is disconnected or not. I.e. whether the first main positive relay 320 in the plug-in circuit is open.

S5309: and sending a lithium circuit conduction instruction to the rectification distribution box 160. Specifically, in the case where the plug-in circuit is open, a lithium-ion circuit on instruction is sent to the rectifying distribution box 160.

S5310: and judging whether the lithium circuit is conducted or not. I.e., whether the second main positive relay 350 of the lithium-ion circuit is closed.

S5311: lithium electric pumping is carried out. Specifically, in the case that the lithium electric circuit of the rectifying distribution box 160 is turned on, if the second electric control bus voltage of the lithium electric circuit is greater than or equal to the preset second voltage threshold after the second preset time threshold, the power battery 210 is controlled to supply energy to the operation motor 130 through the lithium electric circuit, and the operation motor 130 is controlled to supply energy to the hydraulic system 140 so as to perform lithium electric pumping.

It should be noted that, in the above-described determination processes of steps S5301, S5303, S5306, S5308 and S5310, if any one of the determination results is negative, the process proceeds directly to step S5401. If the power-on mode fails or the power-on mode is switched to the lithium power-on mode, the pure engine pumping mode is started.

S540: and judging whether the engine is a pure engine pumping mode request command.

S5401: pure engine pumping is performed. Specifically, in the case where the operation mode request command is an engine-only pumping mode request command, the engine 110 is started, the clutch 120 is closed, and the engine 110 is controlled to supply power to the hydraulic system 140 through the work motor 130 for engine-only pumping.

In the process of performing the pure engine pumping, if the electric quantity of the power battery 210 is smaller than or equal to the first electric quantity threshold and larger than the second electric quantity threshold, it is determined that the power battery 210 has a low electric quantity fault, and a low electric quantity fault reminder is generated.

S5402: it is determined whether the charge of the power cell 210 is less than or equal to the second charge threshold.

S5403: it is determined whether the power battery 210 completes the high-voltage power-up, i.e., whether a high-voltage power-up completion signal of the power battery 210 is received.

S5404: and sending a lithium circuit conduction instruction to the rectification distribution box 160. Specifically, upon receiving a high-voltage power-on completion signal of the power battery 210, a lithium-ion circuit on command is sent to the rectifying block terminal 160.

S5405: and judging whether the lithium circuit is conducted or not. I.e., whether the second main positive relay 350 of the lithium-ion circuit is closed.

S5406: lithium electric pumping is carried out. Specifically, lithium battery pumping is performed with the lithium battery circuit turned on.

S5407: it is determined whether the charge of the power cell 210 is greater than a third charge threshold. Specifically, in the process of performing the lithium battery pumping, if the electric quantity of the power battery 210 is greater than a preset third electric quantity threshold, the pure engine pumping mode is re-entered, and pure engine pumping is performed (S5401).

S550: judging whether the lithium electric pumping mode request instruction is adopted.

S5501: it is determined whether the power cell 210 is finished with the high-voltage power-up.

S5502: and sending a lithium circuit conduction instruction. Specifically, when a high-voltage power-on completion signal is received, a lithium-ion circuit on command is sent to the rectifying block terminal 160.

S5503: and judging whether the lithium circuit is conducted or not.

S5504: lithium electric pumping is carried out. Specifically, in the case that the lithium battery circuit is turned on, if the second electric control bus voltage of the lithium battery circuit is greater than or equal to the second voltage threshold after a second preset time threshold, the power battery 210 is controlled to supply energy to the operation motor 130 through the lithium battery circuit, and the operation motor 130 is controlled to supply energy to the hydraulic system 140 so as to perform lithium electric pumping.

It should be noted that, in the above-mentioned judging process of steps S5501 and S5503, if any judging result is failed, step S5401 is directly entered. If the lithium electric pumping mode is failed, the pure engine pumping mode is directly entered.

S560: and judging whether the parking charging mode request instruction is generated.

S5601: it is determined whether the power cell 210 is finished with the high-voltage power-up.

S5602: and sending a lithium circuit conduction instruction.

S5603: and judging whether the lithium circuit is conducted or not.

S5604: and carrying out parking charging. Specifically, in the case where the lithium battery circuit is turned on, if the second electric control bus voltage of the lithium battery circuit is greater than or equal to the second voltage threshold after the second preset time threshold, the engine 110 is controlled to sequentially pass through the clutch 120, the operation motor 130 and the lithium battery circuit to charge the power battery 210. The parking is well realized under the condition that the electric quantity of the power battery 210 is insufficient, the range-extending power generation is performed, the anxiety of the pure electric mileage is avoided, the pumping operation time is greatly prolonged under the condition that no charging pile exists, and the pumping operation range is enlarged.

S5605: and sending out a parking charging function fault prompt. Specifically, in the judging process of steps S5601 and S5603, if any one of the judging results is negative, a parking charging function failure reminder is issued.

It should be noted that, if the hybrid vehicle pump is in the lithium electric pumping mode, the plug electric pumping mode or the pure engine pumping mode, the vehicle-mounted pump does not perform pumping operation, then the parking charging request instruction sent by the driver is received, and the steps S5601-S5605 are performed.

It should also be mentioned that the above S530 (and following S5301-S5311), S540 (and following S5401-S5407), S550 (and following S5501-S5504) and S560 (and following S5601-S5605) are not sequential.

The control method of the hybrid power system in the above embodiment can meet the multi-scenario pumping requirements of users or drivers, and select the corresponding working mode according to the location, so as to reduce the use cost of users as much as possible, reduce the fuel consumption and emission, and help to improve the durability and reliability of the components such as the power battery 210.

Fig. 6 illustrates a physical schematic diagram of an electronic device, as shown in fig. 6, which may include: processor 610, communication interface (Communications Interface) 620, memory 630, and communication bus 640, wherein processor 610, communication interface 620, and memory 630 communicate with each other via communication bus 640. The processor 610 may invoke logic instructions in the memory 630 to execute a method of controlling a hybrid powertrain system, the method comprising: receiving a working mode request instruction; if the work mode request instruction is a plug-in pumping mode request instruction, if the rectifying distribution box is externally connected with a power supply, a plug-in loop conduction request is sent to the rectifying distribution box; under the condition that a power-in loop of the rectifying distribution box is conducted, monitoring first electric control bus voltage in the power-in loop, and if the first electric control bus voltage is larger than or equal to a preset first voltage threshold after a first preset time threshold, the power of the external power supply is smaller than a preset power threshold, controlling an engine and the external power supply to supply power to a hydraulic system through an operation motor so as to carry out power-in and power-out pumping.

The system embodiments described above are merely illustrative, in which the modules illustrated as separate components may or may not be physically separate, and the components shown as modules may or may not be physical, i.e., may be located in one place, or may be distributed over a plurality of network modules. Some or all of the modules may be selected according to actual needs to achieve the purpose of the solution of this embodiment. Those of ordinary skill in the art will understand and implement the present invention without undue burden.

From the above description of the embodiments, it will be apparent to those skilled in the art that the embodiments may be implemented by means of software plus necessary general hardware platforms, or of course may be implemented by means of hardware. Based on this understanding, the foregoing technical solution may be embodied essentially or in a part contributing to the prior art in the form of a software product, which may be stored in a computer readable storage medium, such as ROM/RAM, a magnetic disk, an optical disk, etc., including several instructions for causing a computer device (which may be a personal computer, a server, or a network device, etc.) to execute the method described in the respective embodiments or some parts of the embodiments.

Finally, it should be noted that: the above embodiments are only for illustrating the technical solution of the present invention, and are not limiting; although the invention has been described in detail with reference to the foregoing embodiments, it will be understood by those of ordinary skill in the art that: the technical scheme described in the foregoing embodiments can be modified or some technical features thereof can be replaced by equivalents; such modifications and substitutions do not depart from the spirit and scope of the technical solutions of the embodiments of the present invention.

Claims

1. A hybrid system, comprising:

the loading whole vehicle controller comprises:

2. The hybrid system as set forth in claim 1, further comprising: the power battery is connected with the rectifying distribution box;

3. The hybrid system of claim 2, wherein the on-board vehicle controller further comprises: the pure engine pumping mode control module is used for starting the engine, closing the clutch and controlling the engine to supply energy to the hydraulic system through the operation motor so as to pump the pure engine under the condition that the working mode request command is the pure engine pumping mode request command; in the process of pumping the pure engine, if the electric quantity of the power battery is smaller than or equal to the first electric quantity threshold value and larger than the second electric quantity threshold value, determining that the power battery has low electric quantity faults and generating low electric quantity fault reminding; if the electric quantity of the power battery is smaller than or equal to the second electric quantity threshold value, sending the lithium circuit conduction instruction to the rectifying distribution box under the condition that a high-voltage power-on completion signal of the power battery is received; under the condition that the lithium battery loop is conducted, lithium battery pumping is conducted; and in the process of pumping the lithium battery, if the electric quantity of the power battery is larger than a preset third electric quantity threshold value, re-entering a pure engine pumping mode, and pumping the pure engine.

4. The hybrid system of claim 2, wherein the on-board vehicle controller further comprises: the lithium electric pumping mode control module is used for receiving the high-voltage power-on completion signal of the power battery under the condition that the working mode request instruction is a lithium electric pumping mode request instruction; based on the high-voltage power-on completion signal, a lithium circuit conduction instruction is sent to the rectifying distribution box; and under the condition that the lithium battery loop is conducted, if the voltage of the second electric control bus of the lithium battery loop is greater than or equal to the second voltage threshold after a second preset time threshold, controlling the power battery to supply energy to the operation motor through the lithium battery loop, and controlling the operation motor to supply energy to the hydraulic system so as to carry out lithium electric pumping.

5. The hybrid system of claim 2, wherein the on-board vehicle controller further comprises: the parking charging mode control module is used for receiving the high-voltage power-on completion signal of the power battery under the condition that the working mode request instruction is a parking charging request instruction, and sending the lithium circuit conduction instruction to the rectifying distribution box based on the high-voltage power-on completion signal; and under the condition that the lithium battery loop is conducted, if the voltage of the second electric control bus of the lithium battery loop is greater than or equal to the second voltage threshold after the second preset time threshold, controlling the engine to sequentially pass through the clutch, the operation motor and the lithium battery loop so as to charge the power battery.

6. The hybrid system of claim 1, wherein the rectifying power distribution box comprises: an insertion circuit;

7. The hybrid system of claim 6, wherein the rectifying block terminal further comprises: a lithium circuit;

8. A hybrid vehicle pump, comprising: at least one loading mechanism, and a hybrid power system according to any one of claims 1 to 7, wherein the hydraulic system is respectively connected with each loading mechanism for supplying energy to the loading mechanism, and the loading mechanism is a pumping mechanism, a slewing mechanism, an amplitude changing mechanism, a hoisting mechanism or a telescopic arm.

9. A control method of the hybrid system according to any one of claims 1 to 7, characterized by comprising:

Receiving a working mode request instruction;

10. An electronic device comprising a memory, a processor and a computer program stored on the memory and executable on the processor, characterized in that the processor implements the control method of the hybrid vehicle pump according to claim 9 when executing the program.