CN111746311A - Electric energy-saving method for automobile crane operation system - Google Patents
Electric energy-saving method for automobile crane operation system Download PDFInfo
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- CN111746311A CN111746311A CN202010480474.6A CN202010480474A CN111746311A CN 111746311 A CN111746311 A CN 111746311A CN 202010480474 A CN202010480474 A CN 202010480474A CN 111746311 A CN111746311 A CN 111746311A
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B60—VEHICLES IN GENERAL
- B60L—PROPULSION OF ELECTRICALLY-PROPELLED VEHICLES; SUPPLYING ELECTRIC POWER FOR AUXILIARY EQUIPMENT OF ELECTRICALLY-PROPELLED VEHICLES; ELECTRODYNAMIC BRAKE SYSTEMS FOR VEHICLES IN GENERAL; MAGNETIC SUSPENSION OR LEVITATION FOR VEHICLES; MONITORING OPERATING VARIABLES OF ELECTRICALLY-PROPELLED VEHICLES; ELECTRIC SAFETY DEVICES FOR ELECTRICALLY-PROPELLED VEHICLES
- B60L53/00—Methods of charging batteries, specially adapted for electric vehicles; Charging stations or on-board charging equipment therefor; Exchange of energy storage elements in electric vehicles
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B60—VEHICLES IN GENERAL
- B60L—PROPULSION OF ELECTRICALLY-PROPELLED VEHICLES; SUPPLYING ELECTRIC POWER FOR AUXILIARY EQUIPMENT OF ELECTRICALLY-PROPELLED VEHICLES; ELECTRODYNAMIC BRAKE SYSTEMS FOR VEHICLES IN GENERAL; MAGNETIC SUSPENSION OR LEVITATION FOR VEHICLES; MONITORING OPERATING VARIABLES OF ELECTRICALLY-PROPELLED VEHICLES; ELECTRIC SAFETY DEVICES FOR ELECTRICALLY-PROPELLED VEHICLES
- B60L58/00—Methods or circuit arrangements for monitoring or controlling batteries or fuel cells, specially adapted for electric vehicles
- B60L58/10—Methods or circuit arrangements for monitoring or controlling batteries or fuel cells, specially adapted for electric vehicles for monitoring or controlling batteries
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B60—VEHICLES IN GENERAL
- B60R—VEHICLES, VEHICLE FITTINGS, OR VEHICLE PARTS, NOT OTHERWISE PROVIDED FOR
- B60R16/00—Electric or fluid circuits specially adapted for vehicles and not otherwise provided for; Arrangement of elements of electric or fluid circuits specially adapted for vehicles and not otherwise provided for
- B60R16/02—Electric or fluid circuits specially adapted for vehicles and not otherwise provided for; Arrangement of elements of electric or fluid circuits specially adapted for vehicles and not otherwise provided for electric constitutive elements
- B60R16/023—Electric or fluid circuits specially adapted for vehicles and not otherwise provided for; Arrangement of elements of electric or fluid circuits specially adapted for vehicles and not otherwise provided for electric constitutive elements for transmission of signals between vehicle parts or subsystems
- B60R16/0231—Circuits relating to the driving or the functioning of the vehicle
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B66—HOISTING; LIFTING; HAULING
- B66C—CRANES; LOAD-ENGAGING ELEMENTS OR DEVICES FOR CRANES, CAPSTANS, WINCHES, OR TACKLES
- B66C13/00—Other constructional features or details
- B66C13/18—Control systems or devices
- B66C13/22—Control systems or devices for electric drives
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- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
- Y02T—CLIMATE CHANGE MITIGATION TECHNOLOGIES RELATED TO TRANSPORTATION
- Y02T10/00—Road transport of goods or passengers
- Y02T10/60—Other road transportation technologies with climate change mitigation effect
- Y02T10/70—Energy storage systems for electromobility, e.g. batteries
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- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
- Y02T—CLIMATE CHANGE MITIGATION TECHNOLOGIES RELATED TO TRANSPORTATION
- Y02T10/00—Road transport of goods or passengers
- Y02T10/60—Other road transportation technologies with climate change mitigation effect
- Y02T10/7072—Electromobility specific charging systems or methods for batteries, ultracapacitors, supercapacitors or double-layer capacitors
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- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
- Y02T—CLIMATE CHANGE MITIGATION TECHNOLOGIES RELATED TO TRANSPORTATION
- Y02T90/00—Enabling technologies or technologies with a potential or indirect contribution to GHG emissions mitigation
- Y02T90/10—Technologies relating to charging of electric vehicles
- Y02T90/14—Plug-in electric vehicles
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- Sustainable Development (AREA)
- Sustainable Energy (AREA)
- Electric Propulsion And Braking For Vehicles (AREA)
Abstract
The invention discloses an electric energy-saving method for an automobile crane operation system, which comprises an electric framework forming the automobile crane operation system and an electric energy management method under the framework, wherein the electric framework of the automobile crane operation system is respectively composed of a chassis part, a chassis, a loading room part and a loading part. The invention relates to an electric energy-saving method for an automobile crane operation system, which can realize charging in driving, through the management control of slow charging in driving, and the charging in a high-efficiency working area of an engine is utilized, namely, the starting of the engine is reduced, the energy-saving effect is achieved, and the vehicle can be parked at any time.
Description
Technical Field
The invention relates to the technical field of automobile cranes, in particular to an electric energy-saving method for an automobile crane operation system.
Background
At present, the automobile crane adopting a single-shot structure is generally used for installing a power takeoff on a chassis engine to drive a hydraulic pump to provide hydraulic power, then transmitting the hydraulic power to a loading system, and finally paying off working components such as control hydraulic pressure, hydraulic pressure of a rotary motor, hydraulic pressure of a hoisting motor, a refrigerating motor of an air conditioner in a cab and the like. Aiming at the characteristics of low conversion efficiency and difficult accurate control and operation of the hydraulic system in the application, an electric system is utilized for improvement.
Disclosure of Invention
Technical problem to be solved
Aiming at the defects of the prior art, the invention provides an electric energy-saving method for an automobile crane operation system, which realizes the purposes of energy saving and accurate control.
(II) technical scheme
In order to achieve the purpose, the invention is realized by the following technical scheme: the electric energy-saving method for the operating system of the automobile crane comprises an electric framework forming the operating system of the automobile crane and an electric energy management method under the framework, wherein the electric framework of the operating system of the automobile crane respectively consists of a chassis part, a chassis, an upper assembly room part and an upper assembly part.
Preferably, the chassis member comprises: a chassis permanent magnet motor with the power generation and engine starting capabilities and an all-in-one machine integrating the battery charging and discharging functions are added.
Preferably, the chassis and upper bay components are multi-layered and high and low voltage isolated conductive slip ring assemblies that transmit power and control signals.
Preferably, the upper fitting part includes: the system comprises a distribution box with a power distribution function, a high-voltage power battery system, a program-controlled high-voltage direct-current air conditioner with a battery thermal management function, a hydraulic motor system for driving a loading action system, a turntable motor system with a power-off internal contracting brake function, a winch motor system with the power-off internal contracting brake and a feedback power generation braking function, a discharge braking resistor, a voltage converter for converting high voltage into low voltage, a power system manager, a peripheral circuit, a loading operation controller, peripheral components and a loading display instrument capable of human-computer interaction.
Preferably, the electric energy management method specifically comprises the following steps:
s1, power supply control: the integrated machine with the functions of battery charging and discharging integrated through chassis power plug-in supplies power to the whole power system in real time under the condition of commercial power, and is controlled in real time through a power system manager;
s2, controlling the chassis permanent magnet motor by the power system manager: during traveling, the electric power system manager judges the traveling state according to the vehicle speed, calculates the reserve power of an engine and the battery capacity of a high-voltage power battery system in real time, generates power and stops when the power is full, controls the SOC of the high-voltage power battery system to be between 20% and 90% during the lifting operation, controls a chassis permanent magnet motor to start the engine when the SOC is lower than 20%, and controls the engine to drive the chassis permanent magnet motor to charge the electric power system in an economic area through a TSC1 message in a power CAN-J1939 protocol; when the SOC of the high-voltage power battery system is more than 90%, the high-voltage power battery system is fully charged;
s3, generating power by a winding motor system: the potential energy of the hoisted heavy object descending is utilized to drive the motor of the hoisting motor system to generate electricity, the electric energy can be recharged to the power battery to be stored at the same time of achieving the braking function, and the power system manager controls the distribution boxes with the power distribution function to drive the braking discharge braking resistor to discharge properly.
Preferably, in the step S1, the power system manager monitors the system running state in real time; when the integrated machine integrating the battery charging and discharging functions discharges, the high-voltage power battery system monitors, and when the SOC of the electric quantity of the integrated machine is lower than 20%, the integrated machine is self-protected and powered off.
Preferably, in the step S2, the power system manager first controls the chassis permanent magnet motor to stop generating power gradually, and reduces the rotation speed of the engine, and then stops the engine by using the SPN970 message in the power CAN-J1939 protocol PGN61441, and finally disconnects the Key-on signals of the chassis engine and the chassis permanent magnet motor to implement shutdown and power saving.
Preferably, the specific removal operation SOC in step S3 is greater than 95%.
In order to realize the method of the invention, the following parts need to be developed: the system comprises an integrated machine integrating the charging and discharging functions of a battery, a multilayer conductive slip ring assembly for customizing and developing transmission power and control signals, a distribution box for customizing and developing program control containing power distribution insulation monitoring and protecting functions, a high-voltage direct-current air conditioner with a battery thermal management function, a power system manager program, an operation controller program, a human-computer interaction display instrument program, a peripheral component and a whole vehicle circuit, wherein the peripheral component is changed into an electric device; and customizing and developing parts of a rotary table motor system and a winch motor system with the power-off band-type brake function.
(III) advantageous effects
The invention provides an electric energy-saving method for an automobile crane operation system. Compared with the prior art, the method has the following beneficial effects:
(1) the invention is suitable for improving and upgrading the truck crane upper power system, compared with the traditional hydraulic power system technology, the electric technology realizes the purposes of energy saving and consumption reduction under the working condition of hoisting operation by using the linkage control technologies of charging, power generation, energy storage, potential energy recovery, intelligent engine starting and stopping and the like, in addition, the system uses the data control and speed regulation technology of the motor, the requirement of accurate control of hoisting operation is met, and therefore the purposes of energy conservation and accurate control are achieved.
(2) The method for electrically saving energy of the automobile crane operation system can realize power-on operation, and can realize '0' oil consumption without starting an engine through the chassis charger OBC.
(3) The method for saving energy by the motorization of the automobile crane operation system can realize power generation operation, realize the functions of operating the engine for 10 minutes and stopping the engine for 3 hours by means of chassis power generation and battery energy storage, and save oil by 70 percent by simulating operation condition data after reasonable matching.
(4) The invention realizes accurate operation by acquiring analog quantity signal control of a handle, automatically controlling numerical control operation and accurately setting the rotating speed and the stepping value of a turntable motor and a winch motor by a touch display system DS.
(5) The electric energy-saving method of the automobile crane operation system can realize an additional function of power taking, and the OBC in the system integrates the power battery to 220AC and 3kw electric energy output capacity in consideration of the field operation working condition, so that the power utilization capacity of daily life and small equipment is met.
Drawings
FIG. 1 is a first partial layout view of an energy efficient motorized structure for a mobile crane operation system according to the present invention;
FIG. 2 is a second partial layout view of the energy efficient motorized structure of the mobile crane operation system of the present invention;
FIG. 3 is a third partial distribution diagram of the energy efficient motorized structure of the mobile crane operation system of the present invention;
fig. 4 is a schematic diagram of the energy flow of the present invention.
Detailed Description
The technical solutions in the embodiments of the present invention will be clearly and completely described below with reference to the drawings in the embodiments of the present invention, and it is obvious that the described embodiments are only a part of the embodiments of the present invention, and not all of the embodiments. All other embodiments, which can be derived by a person skilled in the art from the embodiments given herein without making any creative effort, shall fall within the protection scope of the present invention.
Referring to fig. 1-4, an embodiment of the present invention provides a technical solution: the electric energy-saving method for automobile crane operation system includes electric framework of the automobile crane operation system and electric energy management method under the framework.
Chassis components: a chassis permanent magnet motor (PE0) with the capability of generating power and starting an engine and an all-in-one machine (OBC) with the function of charging and discharging an integrated battery are additionally arranged.
Chassis and upper equipment room parts: a multi-layer and high and low voltage isolated electrically conductive slip ring assembly (EC-HL) that transmits power and control signals.
The upper assembling part: the system comprises a power distribution box (PDM) with a power distribution function, a high-voltage power battery system (BMS), a programmable high-voltage direct current air conditioner (HAC) with a battery thermal management function, a hydraulic motor system (PE1) for driving an upper-mounted action system, a rotary table motor system (PE2) with a power-off brake function, a winch motor system (PE3) with a power-off brake and feedback power generation brake function, a discharge brake Resistor (RS), a high-voltage to low-voltage converter (DC2DC), a power system manager (ECM) and peripheral circuits, an upper-mounted operation controller (DCM), peripheral components and an upper-mounted display instrument (DS) with a man-machine interaction function.
The electric energy management method specifically comprises the following steps:
PE0 travelling crane power generation: the running power generation function switch of the chassis is activated in the running process, the ECM monitors that the SOC of the battery is less than 90% and the speed of the battery is greater than 5km, the running power generation function is activated, the power generation mode is a slow charging mode for reducing the influence on the running, and the ECM control mode is as follows: monitoring is carried out in a 500ms period, the load rate of an engine is less than 80%, the rotating speed is in a range of 1000-1800rpm, the PE0 consumed engine torque is calculated to be 0-15% for power generation, the load rate of the monitored engine is greater than 95%, the power generation amount is reduced, the ECM carries out program control on the power generation and unloading process of the PE0, the change rate of the power generation consumed torque of the PE0 is controlled to be a reference torque value (PGN65251-SPN544) of the engine of less than 2%/S, so that the driving operation is not influenced, and when the SOC is greater than 90%, the power generation function is deactivated, the ECM lights a full power indicator lamp of a chassis cab.
PE0 driving assistance: under a specific driving condition, when the SOC of a battery is greater than 30%, the vehicle speed is less than 25KM/h, the opening degree of an accelerator in an ECU bus is greater than 7%, and the rotating speed is greater than 700RPM, after a chassis power lifting switch is activated, the ECM controls PE0 to provide auxiliary driving force for a vehicle in a torque mode, the driving torque linearly changes along with the opening degree of the accelerator, assistance is provided for low-speed running of the vehicle, and meanwhile, oil is saved.
And (3) OBC plug-in operation: the equipment has the characteristic of long-time intermittence in the operation process, a charger OBC which can be connected with commercial power through a chassis continuously supplements electric energy for a system in the operation and can be stored in a BMS (battery management system), and the engine is not started in the operation, namely the oil consumption of the operation is 0; OBC, and BMS, ECM monitoring, OBC automatically stop charging when SOC > 90%.
The chassis P0 generates electricity and supplies electricity automatically: activating the loading operation switch, monitoring the SOC of the BMS in real time by the ECM, automatically stopping the chassis engine and the generator from working when the power is full, realizing the function of saving oil, and realizing the control strategy of 'automatic power supply': when the SOC is less than 25%, the ECM activates an engine power-on relay to provide a key-on signal for the ECU, then controls PE0 to start the engine by adopting a torque mode, after the engine is started, the ECM controls the engine to generate electricity at the rotating speed of an economic area of 1200-1600RPM through a PGN0 message in a power CAN-J1939 protocol, reduces the electricity to be supplemented into a power system, slowly reduces the rotating speed of the engine to an idle speed within 10S after the BMS is greater than 90%, simultaneously controls the torque of PE0 to reduce the electricity generation amount to be 0', and finally realizes the shutdown and the disconnection of the ECU power-on relay through an SPN970 message in the ECM power CAN-J1939 protocol after the chassis system idles for 5S.
The hydraulic motor PE1 controls: when the loading operation switch is activated, the ECM controls the hydraulic motor to start and operate at an allowable low speed through a rotating speed mode, and the ECM acquires an analog quantity of a speed regulating pedal and converts the analog quantity into an opening percentage signal (x) to be related to a controlled motor rotating speed (y), for example: and y is 12x +800, x is 0-100, and then y is 800-2000, namely the PE1 speed regulation range.
Turntable motor PE2 controls: the motor of the rotary table has the functions of brake of a main shaft with a power-off band brake and electric energy feedback brake, is controlled by a DCU (digital control Unit), inputs an operation signal by a control handle integrating an analog throttle (x) and a direction switch (+/-), and advances the speed (y) and the direction of the motor of the rotary tableThe motor speed regulation principle adopts a quadratic curve with symmetrical original points, and positive rotation y is equal to ax2+ bx + c and inverted y ═ ax2+ bx + c), where a, b, c are scalar quantities, control mode: the accelerator responds corresponding to the rotating speed, wherein energy feedback braking is adopted in slow deceleration, and an internal contracting brake is added in rapid deceleration of the accelerator. If the test is not good when the rotating speed is over the 0 section, the 0 program section can be developed according to the principle, and secondary calibration can be carried out.
The winding poplar motor PE3 controls: the winch motor has a main shaft braking function with a power-off internal contracting brake and a power generation energy recovery mode of dragging the heavy object potential energy backwards. The motor is controlled by a DCU, an operation signal is input by a control handle integrating an analog throttle (x) and a direction switch (+/-), the speed (y) and the direction advance of the winding motor are controlled, the driving operation mode is ensured to be unchanged, and the motor speed regulation principle adopts a quadratic curve with symmetrical origin: positive rotation y ═ ax2+ bx + c and inverted y ═ ax2+ bx + c), where a, b, c are scalar quantities, control mode: the accelerator responds corresponding to the rotating speed, wherein energy feedback braking is adopted in slow deceleration, an internal contracting brake is added in rapid deceleration of the accelerator, if the rotating speed is poor after passing through a 0 section, the 0 section can be developed according to the principle, and secondary calibration can be carried out.
Conductive slip ring bus EC-HL part: the customized component supports 360-degree continuous rotation, realizes the function of transmitting the power of the chassis to a loading system, and needs to add 1 grounding shielding layer between the high-voltage ring and the low-voltage ring according to the use environment.
High-voltage distribution box PDM control: the device provides insurance and pre-charging functions for electric equipment in the system, a main loop is closed and disconnected by adopting a high-voltage relay, meanwhile, a PDM system monitors the insulation value of power lines of each part in real time, an ECM and the PDM carry out information interaction through an electric CAN bus, the ECM monitors the running state of each subsystem, and the normal running of the subcomponents is realized by controlling the relay in the PDM.
The main control part, namely an electric power system management controller ECM and a loading operation controller DCM CAN be combined into a whole, in order to reduce wiring, the whole vehicle adopts the remote distributed arrangement of a CAN communication mode, the ECM mainly realizes electric energy management and distribution work, the DCM realizes the loading control and action functions, the ECM and the DCM adopt CAN lines for information interaction according to the requirements in operation, and the energy flow in figure 2 is realized, so that the aim of saving energy is fulfilled.
Control of key components power battery BMS: the BMS is an energy storage component in the system, provides energy for the upper system and absorbs feedback energy, and the ECM controls the upper and lower electricity of the system in operation and monitors information such as voltage, current, temperature, SOC data and faults of the system.
Getting-on (cab) display instrument DS: the custom-programmed HMI (human machine) system with input function mainly displays data of electric system and chassis engine during working. Operation in a numerical control mode: the required hoisting height and the required turntable angle are required to be arranged in the DS, the DS transmits data to the DCM after operation, the number of turns corresponding to the ranges PE2 and PE3 is analyzed through a data algorithm in the DCM combination state, the required number of turns is transmitted to PE2 and PE3, so that the accurate numerical control of the turntable and the hoisting is realized, and the algorithm in the document needs to be preset and corrected in combination with the transmission ratio of an operation system.
Auxiliary component 3 voltage converter DC2 DC: the component realizes the conversion of high-voltage direct current of the power battery into 27V direct current, provides a working power supply for an upper electrical system and charges an upper storage battery.
In conclusion, the invention can realize charging in driving, through the management control of slow charging in driving, the invention utilizes the high-efficiency working area charging of the engine, namely, the starting of the engine is reduced, the energy-saving effect is achieved, and the vehicle can be parked at any time, the invention is suitable for the improvement and the upgrade of the power system arranged on the truck crane, compared with the traditional hydraulic power system technology, the invention adopts the linkage control technology of charging, power generation, energy storage, potential energy recovery, intelligent starting and stopping of the engine and the like to realize the purposes of energy saving and consumption reduction under the working condition of hoisting operation, in addition, the system adopts the technology of data control and speed regulation of the motor to realize the requirement of accurate control of the hoisting operation, thereby realizing the purposes of energy saving and accurate control, realizing the power plugging operation, realizing the oil consumption without starting the engine, namely '0', realizing the power generation operation through the chassis, the invention relates to a battery energy storage mode, which realizes the functions of operating an engine for 10 minutes and stopping the engine for 3 hours, achieves the oil saving of 70 percent by simulating working condition data after reasonable matching, can realize accurate operation, and has two modes of manual control and automatic numerical control, wherein the manual operation is the same as the existing hydraulic operation.
And those not described in detail in this specification are well within the skill of those in the art.
It is noted that, herein, relational terms such as first and second, and the like may be used solely to distinguish one entity or action from another entity or action without necessarily requiring or implying any actual such relationship or order between such entities or actions. Also, the terms "comprises," "comprising," or any other variation thereof, are intended to cover a non-exclusive inclusion, such that a process, method, article, or apparatus that comprises a list of elements does not include only those elements but may include other elements not expressly listed or inherent to such process, method, article, or apparatus.
Although embodiments of the present invention have been shown and described, it will be appreciated by those skilled in the art that changes, modifications, substitutions and alterations can be made in these embodiments without departing from the principles and spirit of the invention, the scope of which is defined in the appended claims and their equivalents.
Claims (8)
1. An electric energy-saving method for an automobile crane operation system is characterized in that: the electric framework of the automobile crane operation system is respectively composed of a chassis part, a chassis, an upper assembly room part and an upper assembly part.
2. The method for electrically saving energy of the operating system of the truck crane as claimed in claim 1, wherein: the chassis component includes: a chassis permanent magnet motor (PE0) with the power generation and engine starting capabilities and an all-in-one machine (OBC) with the battery charging and discharging functions are added.
3. The method for electrically saving energy of the operating system of the truck crane as claimed in claim 1, wherein: the chassis and upper bay components are multi-layer and high and low voltage isolated conductive slip ring assemblies (EC-HL) that transmit power and control signals.
4. The method for electrically saving energy of the operating system of the truck crane as claimed in claim 1, wherein: the upper mounting part includes: the system comprises a power distribution box (PDM) with a power distribution function, a high-voltage power battery system (BMS), a programmable high-voltage direct current air conditioner (HAC) with a battery thermal management function, a hydraulic motor system (PE1) for driving an upper-mounted action system, a rotary table motor system (PE2) with a power-off brake function, a winch motor system (PE3) with a power-off brake and feedback power generation brake function, a discharge brake Resistor (RS), a high-voltage to low-voltage converter (DC2DC), a power system manager (ECM) and peripheral circuits, an upper-mounted operation controller (DCM), peripheral components and an upper-mounted display instrument (DS) with a man-machine interaction function.
5. The method for electrically saving energy of the operating system of the truck crane according to any one of claims 1 to 4, characterized in that: the electric energy management method specifically comprises the following steps:
s1, power supply control: an integrated machine (OBC) with a chassis power plug-in integrated battery charging and discharging function supplies power to the whole power system in real time under the condition of commercial power, and is controlled in real time through a power system manager (ECM);
s2, controlling the chassis permanent magnet motor by a power system manager (ECM): during driving, an electric power system manager (ECM) judges the driving state through the speed of the vehicle, calculates the reserve power of an engine and the battery capacity of a high-voltage power battery system (BMS) in real time, generates power and stops when the power is full, controls the SOC of the battery capacity of the high-voltage power battery system (BMS) to be between 20 and 90 percent and controls a chassis permanent magnet motor (PE0) to start the engine when the SOC is lower than 20 percent, and controls the engine to drive the chassis permanent magnet motor (PE0) to charge the electric power system in an economic zone through TSC1 messages in a power CAN-J1939 protocol; when the SOC of the high-voltage power battery system (BMS) is more than 90%, the system is fully charged;
s3, generating power by a winding motor system (PE 3): the potential energy of the hoisted heavy object descending is utilized to drive a motor of a hoisting motor system (PE3) to generate electricity, the electric energy can be recharged into a power battery to be stored at the same time of achieving a braking function, and a power system manager (ECM) controls a distribution box (PDM) with a power distribution function to drive a braking discharge braking Resistor (RS) to properly discharge.
6. The method for electrically saving energy of the operating system of the truck crane as claimed in claim 1, wherein: the power system manager (ECM) monitors the system operation status in real time in the step S1; when an integrated machine (OBC) integrating the battery charging and discharging functions discharges, a high-voltage power battery system (BMS) monitors the discharge, and when the SOC of the electric quantity of the OBC is lower than 20%, the OBC is self-protected, and power is cut off and supplied.
7. The method for electrically saving energy of the operating system of the truck crane as claimed in claim 1, wherein: in the step S2, the power system manager (ECM) controls the chassis permanent magnet motor (PE0) to gradually stop generating power, and reduces the engine speed, and then stops the engine using the SPN970 message in the power CAN-J1939 protocol PGN61441, and finally the power system manager (ECM) disconnects the Key-on signals of the chassis Engine (ECU) and the chassis permanent magnet motor (PE0) to implement shutdown and power saving.
8. The method for electrically saving energy of the operating system of the truck crane as claimed in claim 1, wherein: the specific removal operation SOC of step S3 is greater than 95%.
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| CN202010480474.6A CN111746311A (en) | 2020-05-30 | 2020-05-30 | Electric energy-saving method for automobile crane operation system |
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| WO2023005591A1 (en) * | 2021-07-30 | 2023-02-02 | 三一汽车起重机械有限公司 | Integrated control system and method for vehicle crane, and electronic device and storage medium |
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Application publication date: 20201009 |