CN114194030A - Method and device for controlling DC/DC converter of working machine and working machine - Google Patents

Method and device for controlling DC/DC converter of working machine and working machine Download PDF

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Publication number
CN114194030A
CN114194030A CN202111555456.0A CN202111555456A CN114194030A CN 114194030 A CN114194030 A CN 114194030A CN 202111555456 A CN202111555456 A CN 202111555456A CN 114194030 A CN114194030 A CN 114194030A
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China
Prior art keywords
state
converter
working machine
preset time
controlling
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Granted
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CN202111555456.0A
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Chinese (zh)
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CN114194030B (en
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李辉
蔡文迪
蔡美玲
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Sany Automobile Hoisting Machinery Co Ltd
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Sany Automobile Hoisting Machinery Co Ltd
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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
    • B60L3/00—Electric devices on electrically-propelled vehicles for safety purposes; Monitoring operating variables, e.g. speed, deceleration or energy consumption
    • B60L3/0023—Detecting, eliminating, remedying or compensating for drive train abnormalities, e.g. failures within the drive train
    • B60L3/0046—Detecting, eliminating, remedying or compensating for drive train abnormalities, e.g. failures within the drive train relating to electric energy storage systems, e.g. batteries or capacitors
    • 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
    • B60L1/00—Supplying electric power to auxiliary equipment of vehicles
    • 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
    • B60L53/20—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 characterised by converters located in the vehicle
    • B60L53/22—Constructional details or arrangements of charging converters specially adapted for charging electric vehicles
    • 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
    • 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
    • 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
    • Y02T10/72—Electric energy management in electromobility
    • 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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  • Engineering & Computer Science (AREA)
  • Power Engineering (AREA)
  • Transportation (AREA)
  • Mechanical Engineering (AREA)
  • Life Sciences & Earth Sciences (AREA)
  • Sustainable Development (AREA)
  • Sustainable Energy (AREA)
  • Operation Control Of Excavators (AREA)

Abstract

The invention provides a method and a device for controlling a DC/DC converter of a working machine and the working machine, wherein the method comprises the following steps: acquiring a gear state of an ignition switch of a working machine, and detecting an operation state of the working machine and an ON-off state of a DC/DC converter of the working machine when the gear state of the ignition switch is an ON gear; controlling the DC/DC converter to be closed under the condition that the opening and closing state is an opening state and the operation state is a preset state within a first preset time period; and after the DC/DC converter is closed, controlling the DC/DC converter to be started after a second preset time period. The invention can effectively reduce the energy consumption of the operation machine.

Description

Method and device for controlling DC/DC converter of working machine and working machine
Technical Field
The invention relates to the technical field of engineering machinery, in particular to a method and a device for controlling a DC/DC converter of operating machinery and the operating machinery.
Background
At present, when the traditional working machine is used for getting on the vehicle, energy is all sourced from an engine. When no operation demand exists, a driver usually manually turns off a low-voltage storage battery switch of a lower vehicle body, and the low-voltage storage battery is stopped to supply power to low-voltage electric appliances, so that the condition that the vehicle cannot be started due to insufficient electric quantity of the low-voltage storage battery when the vehicle is started is avoided.
Compared with the traditional operation machine, the new energy operation machine has the advantages of low noise during vehicle operation, capability of recovering energy and the like. Due to the special working environment of the working machine, even if the vehicle is not used, the key may be left ON the vehicle, that is, the ignition switch of the working machine is still in the ON position. The driver is influenced by the driving habit of the traditional operation machine, and usually the low-voltage storage battery switch of the lower vehicle body is directly and manually disconnected; in the case where the low-voltage battery switch of the lower vehicle body is manually turned off, the driver considers that the vehicle has been manually turned off. However, since the new energy vehicle supplies power to the low-voltage storage battery by the DC/DC converter, when the ignition switch is in the ON position, even if the low-voltage storage battery switch of the lower vehicle body is manually turned off, the DC/DC converter still works to provide the voltage required by the low-voltage electric appliances of the entire vehicle during working, so that the vehicle still keeps in a high-voltage state, the high-voltage electric appliances still may work, and the high voltage cannot be applied, that is, all the controllers ON the entire vehicle still work as if the driver is ON the vehicle. If the high-voltage electric appliance works in the traditional operation machine, a driver can timely find and close the vehicle due to the fact that the noise of the engine is high; however, the new energy operating machine has better NVH (Noise, Vibration, Harshness) performance, and a driver is difficult to find that the high-voltage electric appliance is in a working state, which causes great waste of energy.
Disclosure of Invention
The invention provides a method and a device for controlling a DC/DC converter of a working machine and the working machine, which are used for solving the defect of energy waste in the prior art and realizing the effective reduction of energy consumption of the working machine.
The invention provides a method for controlling a DC/DC converter of a working machine, which comprises the following steps:
acquiring a gear state of an ignition switch of a working machine, and detecting an operation state of the working machine and an ON-off state of a DC/DC converter of the working machine when the gear state of the ignition switch is an ON gear;
controlling the DC/DC converter to be closed under the condition that the opening and closing state is an opening state and the operation state is a preset state within a first preset time period;
and after the DC/DC converter is closed, controlling the DC/DC converter to be started after a second preset time period.
According to a work machine DC/DC converter control method provided by the present invention, the detecting an operation state of the work machine includes:
the method comprises the steps of obtaining the execution state of each operation component of the working machine within a first preset time length, and determining the operation state of the working machine according to the execution state of each operation component.
According to a work machine DC/DC converter control method provided by the present invention, determining an operation state of the work machine based on an execution state of each of the operation members includes:
determining that the operating state of the working machine is an idle state when the execution states of the operating components are determined to be unexecuted; otherwise, determining the operation state of the working machine as a working state.
According to a method for controlling a DC/DC converter of a working machine according to the present invention, before the DC/DC converter is controlled to be turned off, the method further includes:
detecting a traveling state of the work machine; wherein the driving state comprises a driving state and a parking state.
According to a control method of a DC/DC converter of a working machine provided by the present invention, when the on/off state is an on state and the operation state is a preset state within a first preset time period, controlling the DC/DC converter to be turned off includes:
and under the condition that the opening and closing state is an opening state and the operation state is an idle state within a first preset time, controlling the DC/DC converter to be closed when the driving state is a parking state.
According to the control method of the DC/DC converter of the working machine provided by the present invention, the first preset time period is longer than the second preset time period.
The present invention also provides a DC/DC converter control device for a working machine, including: the data acquisition module is used for acquiring the gear state of an ignition switch of the working machine and detecting the operation state of the working machine and the ON-off state of a DC/DC converter of the working machine when the gear state of the ignition switch is an ON gear;
the first control module is used for controlling the DC/DC converter to be closed under the condition that the opening and closing state is an opening state and the operation state is a preset state within a first preset time length;
and the second control module is used for controlling the DC/DC converter to be started after a second preset time period after the DC/DC converter is closed.
The present invention also provides a work machine comprising: a DC/DC converter and a control device connected to the DC/DC converter for performing the steps of the work machine DC/DC converter control method as any one of the above.
The present invention also provides an electronic device comprising a memory, a processor and a computer program stored on the memory and executable on the processor, wherein the processor implements the steps of the method for controlling a DC/DC converter of a working machine as described in any one of the above when executing the program.
The present invention also provides a non-transitory computer-readable storage medium having stored thereon a computer program which, when executed by a processor, implements the steps of the work machine DC/DC converter control method as described in any one of the above.
According to the method, the device and the working machine for controlling the DC/DC converter of the working machine, the gear state of an ignition switch of the working machine is collected, when the gear state of the ignition switch is an ON gear, the operating state of the working machine and the ON-off state of the DC/DC converter are detected, the DC/DC converter of the working machine is controlled to be turned off under the condition that the ON-off state is an ON state and the operating state is a preset state in a first preset time, and the DC/DC converter is further controlled to be turned ON after a second preset time, so that the DC/DC converter is periodically turned off and turned ON according to a period determined by the first preset time and the second preset time, and the energy consumption of the working machine can be effectively reduced.
Drawings
In order to more clearly illustrate the technical solutions of the present invention or the prior art, the drawings needed to be used in the description of the embodiments or the prior art will be briefly described below, and it is obvious that the drawings in the following description are some embodiments of the present invention, and it is obvious for those skilled in the art to obtain other drawings based on these drawings without creative efforts.
FIG. 1 is a schematic flow diagram of a work machine DC/DC converter control method according to the present disclosure;
FIG. 2 is a second schematic flow chart illustrating a method for controlling a DC/DC converter of a work machine according to the present invention;
fig. 3 is a schematic structural diagram of a DC/DC converter control device for a working machine according to the present invention;
fig. 4 is a schematic structural diagram of an electronic device provided in the present invention.
Detailed Description
In order to make the objects, technical solutions and advantages of the present invention clearer, the technical solutions of the present invention will be clearly and completely described below with reference to the accompanying drawings, and it is obvious that the described embodiments are some, but not all embodiments of the present invention. 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.
Due to the special working environment of the working machine, even if the vehicle is not used, the key may be left ON the vehicle, that is, the ignition switch of the working machine is still in the ON position. The driver is influenced by the driving habit of the traditional operation machine, and usually the low-voltage storage battery switch of the lower vehicle body is directly and manually disconnected; in the case where the low-voltage battery switch of the lower vehicle body is manually turned off, the driver assumes that the vehicle has been manually turned off. However, since the new energy vehicle supplies power to the low-voltage storage battery by the DC/DC converter, when the ignition switch is in the ON position, even if the low-voltage storage battery switch of the lower vehicle body is manually turned off, the DC/DC converter still works to provide the voltage required by the low-voltage electric appliances of the entire vehicle during working, so that the vehicle still keeps in a high-voltage state, the high-voltage electric appliances still may work, and the high voltage cannot be applied, that is, all the controllers ON the entire vehicle still work as if the driver is ON the vehicle. If the high-voltage electric appliance works in the traditional operation machine, a driver can timely find and close the vehicle due to the fact that the noise of the engine is high; however, the new energy operating machine has good NVH performance, and a driver is difficult to find that the high-voltage electric appliance is in a working state, so that great waste of energy is caused.
In view of the above, the present invention provides a method for controlling a DC/DC converter of a working machine, and fig. 1 is a schematic flow chart of the method for controlling a DC/DC converter of a working machine according to the present invention, as shown in fig. 1, the method includes:
s100, acquiring a gear state of an ignition switch of the working machine, and detecting an operation state of the working machine and an ON-off state of a DC/DC converter of the working machine when the gear state of the ignition switch is an ON gear.
Specifically, the working machine is a new energy working machine, that is, a power battery is used for supplying power, such as a hybrid working machine, a pure electric working machine and a hydrogen energy working machine. The new energy resource operation machine is a vehicle for construction or transportation, such as a crane. For the new energy operating machinery, under the condition that the gear state of an ignition switch is an ON gear and a low-voltage storage battery switch of a lower vehicle body is closed, all high-voltage electric appliances and low-voltage electric appliances in the whole vehicle can be started; after the high-voltage electric appliance and the low-voltage electric appliance are started, the low-voltage electric appliance can be powered by the DC/DC converter or the low-voltage storage battery of the lower vehicle body, and the residual electric quantity is stored in the low-voltage storage battery of the lower vehicle body after the DC/DC converter powers the low-voltage electric appliance. The high-voltage electric appliances comprise a driving motor, a compressor and the like, and the low-voltage electric appliances comprise various controllers and the like. The shift state of the ignition switch of the work machine can be directly acquired by a Vehicle VCU (Vehicle Control Unit).
The embodiment of the invention aims at that the vehicle is started and is in an unmanned state, so that when the gear state of an ignition switch of the working machine is an ON gear, the working machine is in a high-voltage state, namely, a high-voltage electric appliance can work; after the gear state of the ignition switch is detected to be an ON gear, specific moments for primarily detecting the operation state of the operation machine and the ON-off state of the DC/DC converter are not specifically limited, and can be set according to actual requirements, for example, the operation state of the operation machine and the ON-off state of the DC/DC converter can be detected immediately after the vehicle is started, so that corresponding control measures can be taken in time when the vehicle is in an unmanned state; the system may also be set to detect the operating state of the work machine and the on-off state of the DC/DC converter after a preset time period has elapsed after the vehicle is started. The detection mode of the on-off state of the DC/DC converter can be set according to actual conditions, for example, the detection mode can be acquired through a VCU of a vehicle, and the on-off state of the DC/DC converter can be automatically recorded according to a starting or closing control flow of the DC/DC converter.
S200, controlling the DC/DC converter to be closed under the condition that the opening and closing state is an opening state and the operation state is a preset state within a first preset time.
Specifically, the on-off state is an on state, and the DC/DC converter is controlled to be turned off under the condition that the operating state is a preset state within a first preset time period, that is, the DC/DC converter is in a working state, and the preset state lasts for the first preset time period, then the DC/DC converter is controlled to be turned off.
And S300, after the DC/DC converter is closed, controlling the DC/DC converter to be started after a second preset time period.
Specifically, after the DC/DC converter is detected to be turned off, timing is carried out, and after a second preset time period, the DC/DC converter is controlled to be started. And after the DC/DC converter is started, if the operating state is in a preset state within a first preset time period, continuing to control the DC/DC converter to be closed, and after a second preset time period, controlling the DC/DC converter to be started, so that under the condition that the operating state is in the preset state, the DC/DC converter can be periodically closed and started according to a period determined by the first preset time period and the second preset time period.
In a state where the ignition switch is in the ON position and the vehicle is not in use, there are two cases where the low-voltage battery switch of the vehicle body is manually turned off by the driver and the low-voltage battery switch of the vehicle body is not manually turned off by the driver. Under the condition that a driver manually cuts off a low-voltage storage battery switch of a lower vehicle body, if the DC/DC converter is in an opening state, namely the DC/DC converter is in a working state and provides voltage required by the low-voltage electric appliances of the whole vehicle when working, therefore, the vehicle still can be kept in a high-voltage state, namely all controllers on the whole vehicle still work like the driver on the vehicle (the controllers opened by the driver can continuously work); after the DC/DC converter is controlled to be turned off, the voltage required by the low-voltage electric appliance during working cannot be supplied, the high-voltage relay is turned off, and the controller can also stop working due to the fact that low-voltage power supply is not available, namely, the whole vehicle is in a turned-off state, and automatic high-voltage discharging of the operation machinery is achieved. That is, when the driver manually turns off the low-voltage battery switch of the vehicle body, the DC/DC converter of the working machine is automatically controlled to be turned off, so that the working machine can be automatically turned off, and the power consumption of the power battery is greatly reduced. In addition, if the SOC (State of Charge) of the vehicle is low and the power demand of the entire vehicle is large, the power battery is insufficient and the power battery system may be over-discharged when the vehicle is in a high-voltage State, thereby causing great damage to the power battery. Therefore, the embodiment of the invention can effectively reduce the damage to the power battery by reducing the power consumption of the power battery. Meanwhile, a driver is influenced by the driving habit of the traditional operation machine, after the switch of the low-voltage storage battery of the lower vehicle body is manually turned off, the driver is subconsciously considered to be turned off, the vehicle may leave for a long time, and if the driver leaves, under the condition that all controllers on the whole vehicle still work like the driver is on the vehicle, the potential safety hazard is greater.
Under the condition that a driver does not manually turn off a low-voltage storage battery switch of a lower vehicle body, namely the driver does not have the requirement of low voltage, after the DC/DC converter is turned off, the low-voltage storage battery of the lower vehicle body provides the voltage required by the low-voltage electric appliance during working, and the low-voltage storage battery provides the voltage required by the low-voltage electric appliance during working for a long time, so that the low-voltage storage battery is in power shortage, and the vehicle cannot be started; therefore, after the DC/DC converter is closed, the DC/DC converter is controlled to be started after a second preset time, the voltage required by the low-voltage electric appliance during working is provided through the DC/DC converter, and the condition that the vehicle cannot be started due to the fact that the low-voltage storage battery is insufficient is avoided. In addition, in order to realize that the vehicle can timely discharge high voltage after the low-voltage storage battery is manually closed, the DC/DC converter is controlled to be periodically closed and started, so that the vehicle can timely discharge high voltage by controlling the DC/DC converter to be closed after the low-voltage storage battery is manually closed, and potential safety hazards and damage to the power battery caused when the vehicle is in a high-voltage state are reduced.
Therefore, by controlling the DC/DC converter of the working machine to be periodically turned off and started, on one hand, under the condition that the low-voltage storage battery is not manually turned off, the voltage required by the low-voltage electric appliance during working can be intermittently supplied through the DC/DC converter and the low-voltage storage battery is charged, so that the power consumption of the low-voltage storage battery is effectively reduced, and the probability of power shortage of the low-voltage storage battery is further reduced; on the other hand, when the low-voltage storage battery is manually closed, the vehicle can be ensured to be in a high-voltage state in time, and potential safety hazards and damage to the power battery when the vehicle is in the high-voltage state are reduced.
Therefore, according to the embodiment of the invention, the gear state of the ignition switch of the working machine is collected, the operating state of the working machine and the ON-off state of the DC/DC converter are detected when the gear state of the ignition switch is an ON gear, the DC/DC converter of the working machine is controlled to be turned off under the conditions that the ON-off state is an ON state and the operating state is a preset state within a first preset time, and the DC/DC converter is further controlled to be turned ON after a second preset time, so that the DC/DC converter is periodically turned off and turned ON according to a period determined by the first preset time and the second preset time, and the energy consumption of the working machine can be effectively reduced.
Based on the above embodiment, the detecting the operation state of the working machine includes:
the method comprises the steps of obtaining the execution state of each operation component of the working machine within a first preset time length, and determining the operation state of the working machine according to the execution state of each operation component.
Specifically, the execution state of each operation member of the working machine, that is, the state in which each operation member executes a corresponding command, such as the open/close state of a door, the shift state of a shift lever, the opening degree of an upper throttle, the connection state of a charging gun, the open/close state of a main display, and the operation state of an upper operation handle; the execution states of the operating components can be acquired through the VCU of the vehicle, a new acquisition device does not need to be added, and the wiring harness of the working machine does not need to be changed, so that the operating states of the working machine can be accurately acquired on the basis of the existing configuration of the working machine. The first preset time period may be set according to actual requirements, for example, according to operation habits of a user, by setting the first preset time period, the DC/DC converter is prevented from being turned off when not necessary.
According to any of the embodiments described above, the determining the operation state of the work machine according to the execution state of each of the operation members includes:
determining that the operating state of the working machine is an idle state when the execution states of the operating components are determined to be unexecuted; otherwise, determining the operation state of the working machine as a working state.
Specifically, in the case where the execution states of the respective operation members of the work machine are all unexecuted, that is, the work machine does not receive any operation instruction, is in an unmanned state, and is determined as an idle state, otherwise, the work machine is in an operating state. According to the embodiment of the invention, whether each operation component executes the corresponding operation instruction is judged according to the execution state of each operation component, so that the operation state of the working machine is determined, the operation is simple, no calculation is needed, and whether the working machine is in an unmanned operation state can be quickly and accurately detected.
Based on any embodiment above, before the controlling the DC/DC converter to turn off, the method further includes:
detecting a traveling state of the work machine; wherein the driving state comprises a driving state and a parking state.
Specifically, a travel state of the work machine, that is, whether the work machine is currently in a travel state or a parking state, is detected. In some cases, even if the execution states of the operation components of the working machine are detected to be not executed, the working machine may still be in a running state, for example, during constant-speed running of the working machine, and therefore, by detecting the running state before the DC/DC converter of the working machine is controlled to be turned off and turned on at a preset cycle, the influence on the running of the vehicle due to the fact that the DC/DC converter of the working machine is turned off by mistake during the running process can be effectively avoided. The detection mode of the running state of the working machine is not specifically limited, and may be set according to actual conditions, for example, the gear of the working machine may be acquired by a VCU of the vehicle, and the wheel speed of the vehicle may also be acquired by a wheel speed sensor.
Based on any of the above embodiments, the controlling the DC/DC converter to be turned off when the on/off state is an on state and the operating state is a preset state within a first preset time period includes:
and under the condition that the opening and closing state is an opening state and the operation state is an idle state within a first preset time, controlling the DC/DC converter to be closed when the driving state is a parking state.
Specifically, when the on-off state of the DC/DC converter is an on state and the operating state is an idle state, that is, the operation state of the working machine is in an unmanned state, and the traveling state is in a parking state, the DC/DC converter of the working machine is controlled to be turned off, so that the energy consumption of the working machine can be effectively reduced on the premise that the DC/DC converter of the working machine is not turned off by mistake.
Based on any of the above embodiments, the first preset duration is longer than the second preset duration.
Specifically, the setting of the first preset time period determines whether frequent false turn-off of the DC/DC converter occurs, and therefore, the setting time of the first time period is relatively long, for example, may be 15 minutes; the on-off state of the DC/DC converter corresponding to the second preset time is an off state, when the on-off state of the DC/DC converter is the off state, the low-voltage storage battery supplies power to the low-voltage electric appliance, and the capacity of the low-voltage storage battery is small, so that the power consumption of the low-voltage storage battery can be effectively reduced by reducing the second preset time, and the condition that the vehicle cannot be started due to the power shortage of the low-voltage storage battery is avoided; for example, the second preset time period may be 5 seconds. Therefore, the power consumption of the low-voltage storage battery can be effectively reduced on the premise of reducing the error closing of the DC/DC converter by setting the first preset time length to be longer than the second preset time length.
The following describes in detail a method for controlling a DC/DC converter of a working machine according to a preferred embodiment of the present invention, as shown in fig. 2, including:
s401, acquiring a gear state of an ignition switch of the working machine;
s402, judging whether the gear state of an ignition switch of the working machine is an ON gear, if so, executing a step S403, and if not, executing a step S401;
s403, judging whether the vehicle is in no operation, if so, executing a step S405, and if not, executing a step S404;
s404, clearing the timer, and repeating the step S403;
s405, counting time by a timer, and repeating the step S403;
s406, judging whether the time counted by the timer reaches a first preset time length, if so, executing a step S407, otherwise, executing a step S405; in the step, the first preset time length is set to be 15 minutes;
s407, judging whether the vehicle is in a parking state, if so, executing a step S408, and if not, executing a step S407;
s408, sending a request for controlling the closing of the DC/DC converter, and timing by a timer after the DC/DC converter is closed;
s409, judging whether the timing of the timer reaches a second preset time length, if so, executing the step S410, otherwise, executing the step S409; in the step, the second preset time length is set to be 5 seconds;
and S410, controlling the DC/DC converter to start, and repeating the step S403.
The following describes a work machine DC/DC converter control apparatus provided by the present invention, and the work machine DC/DC converter control apparatus described below and the work machine DC/DC converter control method described above may be referred to in correspondence with each other. As shown in fig. 3, the apparatus includes:
the data acquisition module 310 is configured to acquire a gear state of an ignition switch of a working machine, and detect an operation state of the working machine and an ON-off state of a DC/DC converter of the working machine when the gear state of the ignition switch is an ON gear;
the first control module 320 is configured to control the DC/DC converter to be turned off when the on/off state is an on state and the operating state is a preset state within a first preset time period;
and the second control module 330 is configured to control the DC/DC converter to start after a second preset time period elapses after the DC/DC converter is turned off.
Based on the above embodiment, in the data obtaining module 310, detecting the operation state of the working machine includes:
the method comprises the steps of obtaining the execution state of each operation component of the working machine within a first preset time length, and determining the operation state of the working machine according to the execution state of each operation component.
According to any of the above embodiments, the determining, by the data acquisition module 310, the operation state of the work machine according to the execution state of each operating component includes:
determining that the operating state of the working machine is an idle state when the execution states of the operating components are determined to be unexecuted; otherwise, determining the operation state of the working machine as a working state.
According to any of the above embodiments, the data acquisition module 310 is further configured to detect a driving state of the work machine before controlling the DC/DC converter to be turned off; wherein the driving state comprises a driving state and a parking state.
Based on any of the above embodiments, in the first control module 320, when the on-off state is an on state and the operating state is a preset state within a first preset time period, controlling the DC/DC converter to be turned off includes:
and under the condition that the opening and closing state is an opening state and the operation state is an idle state within a first preset time, controlling the DC/DC converter to be closed when the driving state is a parking state.
Based on any of the above embodiments, the first preset duration is longer than the second preset duration.
Based on any of the above embodiments, the present invention further provides a working machine, comprising a DC/DC converter and a control device, connected to the DC/DC converter, for performing the steps of the working machine DC/DC converter control method according to any of the above embodiments.
Fig. 4 illustrates a physical structure diagram of an electronic device, which may include, as shown in fig. 4: a processor (processor)410, a communication Interface 420, a memory (memory)430 and a communication bus 440, wherein the processor 410, the communication Interface 420 and the memory 430 are communicated with each other via the communication bus 440. Processor 410 may invoke logic instructions in memory 430 to perform a work machine DC/DC converter control method comprising: acquiring a gear state of an ignition switch of a working machine, and detecting an operation state of the working machine and an ON-off state of a DC/DC converter of the working machine when the gear state of the ignition switch is an ON gear;
controlling the DC/DC converter to be closed under the condition that the opening and closing state is an opening state and the operation state is a preset state within a first preset time period;
and after the DC/DC converter is closed, controlling the DC/DC converter to be started after a second preset time period.
In addition, the logic instructions in the memory 430 may be implemented in the form of software functional units and stored in a computer readable storage medium when the software functional units are sold or used as independent products. Based on such understanding, the technical solution of the present invention may be embodied in the form of a software product, which is stored in a storage medium and includes instructions for causing a computer device (which may be a personal computer, a server, or a network device) to execute all or part of the steps of the method according to the embodiments of the present invention. And the aforementioned storage medium includes: a U-disk, a removable hard disk, a Read-Only Memory (ROM), a Random Access Memory (RAM), a magnetic disk or an optical disk, and other various media capable of storing program codes.
In another aspect, the present invention also provides a computer program product comprising a computer program stored on a non-transitory computer-readable storage medium, the computer program comprising program instructions that, when executed by a computer, enable the computer to perform a work machine DC/DC converter control method provided by the above methods, the method comprising: acquiring a gear state of an ignition switch of a working machine, and detecting an operation state of the working machine and an ON-off state of a DC/DC converter of the working machine when the gear state of the ignition switch is an ON gear;
controlling the DC/DC converter to be closed under the condition that the opening and closing state is an opening state and the operation state is a preset state within a first preset time period;
and after the DC/DC converter is closed, controlling the DC/DC converter to be started after a second preset time period.
In yet another aspect, the present invention also provides a non-transitory computer-readable storage medium having stored thereon a computer program that, when executed by a processor, is implemented to perform the work machine DC/DC converter control method provided in each of the above, the method including: acquiring a gear state of an ignition switch of a working machine, and detecting an operation state of the working machine and an ON-off state of a DC/DC converter of the working machine when the gear state of the ignition switch is an ON gear;
controlling the DC/DC converter to be closed under the condition that the opening and closing state is an opening state and the operation state is a preset state within a first preset time period;
and after the DC/DC converter is closed, controlling the DC/DC converter to be started after a second preset time period.
The above-described embodiments of the apparatus are merely illustrative, and the units described as separate parts may or may not be physically separate, and parts displayed as units may or may not be physical units, may be located in one place, or may be distributed on a plurality of network units. Some or all of the modules may be selected according to actual needs to achieve the purpose of the solution of the present embodiment. One of ordinary skill in the art can understand and implement it without inventive effort.
Through the above description of the embodiments, those skilled in the art will clearly understand that each embodiment can be implemented by software plus a necessary general hardware platform, and certainly can also be implemented by hardware. With this understanding in mind, the above-described technical solutions may be embodied in the form of a software product, which can be stored in a computer-readable storage medium such as ROM/RAM, magnetic disk, optical disk, etc., and includes instructions for causing a computer device (which may be a personal computer, a server, or a network device, etc.) to execute the methods described in the embodiments or some parts of the embodiments.
Finally, it should be noted that: the above examples are only intended to illustrate the technical solution of the present invention, but not to limit it; although the present 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 solutions described in the foregoing embodiments may still be modified, or some technical features may be equivalently replaced; and such modifications or substitutions do not depart from the spirit and scope of the corresponding technical solutions of the embodiments of the present invention.

Claims (10)

1. A work machine DC/DC converter control method, comprising:
acquiring a gear state of an ignition switch of a working machine, and detecting an operation state of the working machine and an ON-off state of a DC/DC converter of the working machine when the gear state of the ignition switch is an ON gear;
controlling the DC/DC converter to be closed under the condition that the opening and closing state is an opening state and the operation state is a preset state within a first preset time period;
and after the DC/DC converter is closed, controlling the DC/DC converter to be started after a second preset time period.
2. The work machine DC/DC converter control method of claim 1, wherein said detecting an operating state of the work machine comprises:
the method comprises the steps of obtaining the execution state of each operation component of the working machine within a first preset time length, and determining the operation state of the working machine according to the execution state of each operation component.
3. The work machine DC/DC converter control method according to claim 2, wherein the determining the operation state of the work machine based on the execution state of each of the operation members includes:
determining that the operating state of the working machine is an idle state when the execution states of the operating components are determined to be unexecuted; otherwise, determining the operation state of the working machine as a working state.
4. The work machine DC/DC converter control method of claim 3, further comprising, before controlling the DC/DC converter to turn off:
detecting a traveling state of the work machine; wherein the driving state comprises a driving state and a parking state.
5. The method as claimed in claim 4, wherein the step of controlling the DC/DC converter to be turned off when the on/off state is an on state and the operating state is a preset state within a first preset time period comprises:
and under the condition that the opening and closing state is an opening state and the operation state is an idle state within a first preset time, controlling the DC/DC converter to be closed when the driving state is a parking state.
6. The work machine DC/DC converter control method of claim 1, wherein the first predetermined period of time is greater than the second predetermined period of time.
7. A work machine DC/DC converter control device, comprising:
the data acquisition module is used for acquiring the gear state of an ignition switch of the working machine and detecting the operation state of the working machine and the ON-off state of a DC/DC converter of the working machine when the gear state of the ignition switch is an ON gear;
the first control module is used for controlling the DC/DC converter to be closed under the condition that the opening and closing state is an opening state and the operation state is a preset state within a first preset time length;
and the second control module is used for controlling the DC/DC converter to be started after a second preset time period after the DC/DC converter is closed.
8. A working machine, comprising a DC/DC converter and a control device connected to the DC/DC converter for performing the steps of the working machine DC/DC converter control method according to any one of claims 1 to 6.
9. 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, when executing the program, carries out the steps of the work machine DC/DC converter control method according to any one of claims 1 to 6.
10. A non-transitory computer-readable storage medium having stored thereon a computer program, wherein the computer program, when executed by a processor, implements the steps of the work machine DC/DC converter control method according to any one of claims 1 to 6.
CN202111555456.0A 2021-12-17 2021-12-17 Method and device for controlling DC/DC converter of working machine and working machine Active CN114194030B (en)

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JP2009153251A (en) * 2007-12-19 2009-07-09 Toyota Motor Corp Onboard system controller
JP2012039744A (en) * 2010-08-06 2012-02-23 Toyota Industries Corp Vehicular power supply device and power supply control method
CN102377331A (en) * 2010-08-09 2012-03-14 欧姆龙汽车电子株式会社 Dc-dc converter
CN108773271A (en) * 2018-06-08 2018-11-09 北京长城华冠汽车科技股份有限公司 The method for controlling power supply of electric vehicle

Patent Citations (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JP2009153251A (en) * 2007-12-19 2009-07-09 Toyota Motor Corp Onboard system controller
JP2012039744A (en) * 2010-08-06 2012-02-23 Toyota Industries Corp Vehicular power supply device and power supply control method
CN102377331A (en) * 2010-08-09 2012-03-14 欧姆龙汽车电子株式会社 Dc-dc converter
CN108773271A (en) * 2018-06-08 2018-11-09 北京长城华冠汽车科技股份有限公司 The method for controlling power supply of electric vehicle

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