CN114194030B - 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
CN114194030B
CN114194030B CN202111555456.0A CN202111555456A CN114194030B CN 114194030 B CN114194030 B CN 114194030B CN 202111555456 A CN202111555456 A CN 202111555456A CN 114194030 B CN114194030 B CN 114194030B
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China
Prior art keywords
state
converter
working machine
preset
time period
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CN202111555456.0A
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CN114194030A (en
Inventor
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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Priority to CN202111555456.0A priority Critical patent/CN114194030B/en
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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

Abstract

The invention provides a control method and device of 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; when the on-off state is an on state and the operation state is a preset state within a first preset time period, the DC/DC converter is controlled to be turned off; and after the DC/DC converter is closed, controlling the DC/DC converter to start after a second preset time period. The invention can effectively reduce the energy consumption of the working machine.

Description

Method and device for controlling DC/DC converter of working machine and working machine
Technical Field
The present invention relates to the field of engineering machinery technologies, and in particular, to a method and an apparatus for controlling a DC/DC converter of a working machine, and a working machine.
Background
At present, when the conventional working machine is used for boarding, the energy is sourced from an engine. When the traditional operation machinery is free from operation demands, a driver usually can manually disconnect a low-voltage storage battery switch of a lower vehicle body to stop the low-voltage storage battery from supplying power to a low-voltage electric appliance, so that the situation 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 working machine, the new energy working machine has the advantages of low noise, energy recovery and the like during vehicle operation. Due to the specificity of the work environment of the work machine, even if the vehicle is not in use, the key may be left ON the vehicle, i.e., the ignition switch of the work machine is still in the ON range. The driver is influenced by the driving habit of the traditional operation machinery, and the low-voltage storage battery switch of the lower vehicle body is usually directly and manually disconnected; in the case of manually opening the low-voltage battery switch of the lower vehicle body, 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 gear of the ignition switch is in the ON gear, 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 operation of the low voltage electric appliance of the whole vehicle, so the vehicle still remains in a high voltage state, the high voltage electric appliance still may still work, and the high voltage cannot be lowered, i.e., all the controllers ON the whole vehicle still work like a driver ON the vehicle. If the working machine is a traditional working machine, under the condition that a high-voltage electric appliance works, a driver can timely find and close the vehicle due to high noise of the engine; however, the new energy working machine has better NVH (Noise, vibration, harshness, noise, vibration and harshness) performance, and a driver is difficult to find that the high-voltage electric appliance is in a working state, so that energy is wasted greatly.
Disclosure of Invention
The invention provides a control method and device of 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 effective reduction of energy consumption of the working machine.
The invention provides a control method of 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;
when the on-off state is an on state and the operation state is a preset state within a first preset time period, the DC/DC converter is controlled to be turned off;
and after the DC/DC converter is closed, controlling the DC/DC converter to start after a second preset time period.
According to the present invention, there is provided a method for controlling a DC/DC converter of a working machine, the method for detecting an operation state of the working machine, including:
and acquiring the execution state of each operation part of the working machine within a first preset time period, and determining the operation state of the working machine according to the execution state of each operation part.
According to the present invention, there is provided a method for controlling a DC/DC converter of a working machine, the method for determining an operation state of the working machine according to an execution state of each operation member, the method comprising:
when the execution states of the operation components are not executed, determining that the operation state of the working machine is an idle state; otherwise, determining that the operation state of the working machine is a working state.
According to the method for controlling the DC/DC converter of the working machine, before the DC/DC converter is controlled to be closed, the method further comprises the following steps:
detecting a travel state of the work machine; wherein, the driving state includes a driving state and a parking state.
According to the method for controlling the DC/DC converter of the 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, the method for controlling the DC/DC converter to be turned off includes:
and when the on-off state is an on state and the operation state is an idle state within a first preset duration, and the driving state is a parking state, the DC/DC converter is controlled to be closed.
According to the control method of the DC/DC converter of the working machine, the first preset time period is longer than the second preset time period.
The invention also provides a control device of the DC/DC converter of the working machine, 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 when the on-off state is an on state and the operation state is a preset state within a first preset time period;
and the second control module is used for controlling the starting of the DC/DC converter after a second preset time period passes 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 described in any of the above.
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 the steps of the work machine DC/DC converter control method as described 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 a work machine DC/DC converter control method as described in any of the above.
According to the control method and device for the DC/DC converter of the working machine and the working machine, the gear state of the ignition switch of the working machine is acquired, when the gear state of the ignition switch is the ON gear, the operating state of the working machine and the ON-off state of the DC/DC converter are detected, and when the ON-off state is the ON-state and the operating state in the first preset time period is the preset state, the DC/DC converter of the working machine is controlled to be turned off, and the DC/DC converter is further controlled to be started after the second preset time period, so that the DC/DC converter is periodically turned off and started according to the period determined by the first preset time period and the second preset time period, and the energy consumption of the working machine can be effectively reduced.
Drawings
In order to more clearly illustrate the invention or the technical solutions of the prior art, the drawings used in the description of the embodiments or the prior art will be briefly described, and it is obvious that the drawings in the description below are some embodiments of the invention, and other drawings can be obtained according to these drawings without inventive effort for a person skilled in the art.
FIG. 1 is a schematic flow chart of a method for controlling a DC/DC converter of a work machine according to the present invention;
FIG. 2 is a second flow chart of a method for controlling a DC/DC converter of a work machine according to the present invention;
fig. 3 is a schematic structural view 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 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.
Due to the specificity of the work environment of the work machine, even if the vehicle is not in use, the key may be left ON the vehicle, i.e., the ignition switch of the work machine is still in the ON range. The driver is influenced by the driving habit of the traditional operation machinery, and the low-voltage storage battery switch of the lower vehicle body is usually directly and manually disconnected; in the case of manually opening the low-voltage battery switch of the lower vehicle body, the driver considers that the vehicle has been manually opened. However, since the new energy vehicle supplies power to the low voltage storage battery by the DC/DC converter, when the gear of the ignition switch is in the ON gear, 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 operation of the low voltage electric appliance of the whole vehicle, so the vehicle still remains in a high voltage state, the high voltage electric appliance still may still work, and the high voltage cannot be lowered, i.e., all the controllers ON the whole vehicle still work like a driver ON the vehicle. If the working machine is a traditional working machine, under the condition that a high-voltage electric appliance works, a driver can timely find and close the vehicle due to high noise of the engine; however, the new energy working machine has better NVH performance, and a driver is difficult to find that the high-voltage electric appliance is in a working state, so that energy is wasted greatly.
In this regard, the present invention provides a control method for a DC/DC converter of a working machine, and fig. 1 is a schematic flow chart of the control method for 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, i.e. is powered by a power battery, such as a hybrid working machine, a pure electric working machine, or a hydrogen energy working machine. The new energy work machine is a construction or transportation vehicle, such as a crane. For the new energy working machine, under the condition that the gear state of the ignition switch is the ON gear and the low-voltage storage battery switch of the lower vehicle body is closed, the starting of all high-voltage electric appliances and low-voltage electric appliances in the whole vehicle can be realized; 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 after the DC/DC converter powers the low-voltage electric appliance, the residual electric quantity is stored in the low-voltage storage battery of the lower vehicle body. Wherein, high-voltage electrical appliances such as driving motor, compressor, etc., low-voltage electrical appliances such as various controllers, etc. The gear state of the ignition switch of the work machine can be acquired directly from the VCU (Vehicle Control Unit, vehicle controller) of the vehicle.
The embodiment of the invention aims at the state that the vehicle is started and is in unmanned operation, so when the gear state of the ignition switch of the working machine is the ON gear, the working machine is in a high-voltage state, namely, the state that a high-voltage electric appliance can work; the specific moment for detecting the operation state of the working machine and the ON-off state of the DC/DC converter for the first time is not particularly limited after detecting that the gear state of the ignition switch is the ON gear, and can be set according to actual requirements, for example, the operation state of the working 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 timely taken when the vehicle is in an unmanned state; the system can also be set, and the detection of the operating state of the working machine and the on-off state of the DC/DC converter can be started again after a preset time period passes 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 on-off state of the DC/DC converter can be acquired through VCU of a vehicle, and the on-off state of the DC/DC converter can be automatically recorded according to the start-up or shut-down control flow of the DC/DC converter.
And S200, controlling the DC/DC converter to be closed under the condition that the opening and closing state is an opening state and the operating state is a preset state within a first preset time period.
Specifically, when the on-off state is an on state and the operation state is a preset state within a first preset time period, the DC/DC converter is controlled to be turned off, that is, the DC/DC converter is in a working state, and when the preset state continues for the first preset time period, the DC/DC converter is controlled to be turned off.
S300, after the DC/DC converter is closed, controlling the DC/DC converter to start after a second preset time period.
Specifically, after detecting that the DC/DC converter is turned off, timing is performed, and after a second preset period of time elapses, the DC/DC converter is controlled to be turned on. After the DC/DC converter is started, if the operation state is in a preset state within a first preset time period, the DC/DC converter is continuously controlled to be closed, and after a second preset time period, the DC/DC converter is controlled to be started, so that 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 under the condition that the operation state is in the preset state.
In a state where the ignition switch is in the ON range and the vehicle is not in use, there are two cases where the driver manually turns off the low-voltage battery switch of the lower vehicle body and where the driver does not manually turn off the low-voltage battery switch of the lower vehicle body. In the case that the driver manually turns off the low-voltage battery switch of the lower vehicle body, if the DC/DC converter is in an on state, i.e., the DC/DC converter is in an operating state, and provides a voltage required when the low-voltage electric appliance of the whole vehicle is operated, the vehicle will still be kept in a high-voltage state, i.e., all controllers on the whole vehicle will still operate as if the driver were on the vehicle (the controller turned on by the driver will continue to operate); after the DC/DC converter is controlled to be closed, the voltage required by the low-voltage electric appliance during operation cannot be provided, the high-voltage relay is disconnected, and the controller can stop working due to no low-voltage power supply, namely, the whole vehicle is in a closed state, so that the automatic high-voltage descending of the operation machinery is realized. That is, when the driver manually turns off the low-voltage battery switch of the lower vehicle body, the DC/DC converter of the work machine is automatically controlled to be turned off, so that the work machine can be automatically turned off, and the power consumption of the power battery can be greatly reduced. In addition, if the SOC (State of Charge) of the vehicle is low and the power consumption requirement of the whole vehicle is high, the power battery is damaged in a high-voltage State of the vehicle, and the power battery system is possibly overdischarged, so that the power battery is damaged greatly. 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, the driver is influenced by the driving habit of the traditional working machine, after the low-voltage storage battery switch of the lower vehicle body is manually disconnected, the driver is subconsciously considered to be closed, and possibly has long-time departure, if the driver has departed, and under the condition that all controllers on the whole vehicle still work like the driver on the vehicle, a large potential safety hazard exists, so that the embodiment of the invention can effectively avoid the potential safety hazard by automatically closing the whole vehicle system.
Under the condition that a driver does not manually disconnect a low-voltage storage battery switch of the lower vehicle body, namely under the condition that the driver does not have the requirement of high voltage, after the DC/DC converter is closed, the low-voltage storage battery of the lower vehicle body can be used for providing the voltage required by the low-voltage electric appliance during operation, and the low-voltage storage battery can be used for providing the voltage required by the low-voltage electric appliance during operation for a long time, so that the low-voltage storage battery is deficient, and the vehicle cannot be started; therefore, after the DC/DC converter is closed, the DC/DC converter is controlled to start after a second preset time period, and the voltage required by the low-voltage electric appliance during working is provided by the DC/DC converter, so that the situation that the vehicle cannot start due to the deficiency of the low-voltage storage battery is avoided. In addition, in order to realize that the vehicle can be powered down at a 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 be powered down at a high voltage after the low-voltage storage battery is manually closed, and the potential safety hazard caused when the vehicle is in a high-voltage state and damage to the power battery 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 DC/DC converter can intermittently provide the voltage required by the low-voltage electric appliance during operation and charge the low-voltage storage battery, so that the power consumption of the low-voltage storage battery is effectively reduced, and the power consumption probability of the low-voltage storage battery is further reduced; on the other hand, under the condition that the low-voltage storage battery is manually closed, the high voltage of the vehicle can be ensured at the time of the vehicle, and the potential safety hazard and the damage to the power battery caused when the vehicle is in a high-voltage state are reduced.
Therefore, according to the embodiment of the invention, by collecting the gear state of the ignition switch of the working machine, when the gear state of the ignition switch is the ON gear, the operating state of the working machine and the ON-off state of the DC/DC converter are detected, and when the ON-off state is the ON-state and the operating state in the first preset time period is the preset state, the DC/DC converter of the working machine is controlled to be turned off, and the DC/DC converter is further controlled to be started after the second preset time period, so that the DC/DC converter is periodically turned off and started according to the period determined by the first preset time period and the second preset time period, and the energy consumption of the working machine can be effectively reduced.
Based on the above embodiments, the detecting the operation state of the work machine includes:
and acquiring the execution state of each operation part of the working machine within a first preset time period, and determining the operation state of the working machine according to the execution state of each operation part.
Specifically, the execution state of each operating member of the working machine, that is, the state in which each operating member executes a corresponding instruction, for example, the opening and closing state of the door, the shifting state of the shift lever, the opening degree of the on-coming accelerator, the connection state of the charging gun, the opening and closing state of the main display, the operation state of the on-coming operation handle; the execution state of each operation part can be acquired through the VCU of the vehicle, a new acquisition device is not required to be added, and the wiring harness of the working machine is not required to be changed, so that the accurate acquisition of the operation state of the working machine can be realized on the basis of the existing configuration of the working machine. The first preset duration may be set according to actual requirements, for example, according to operation habits of users, so as to avoid turning off the DC/DC converter when not necessary.
Based on any one of the above embodiments, the determining the operation state of the work machine according to the execution state of each operation member includes:
when the execution states of the operation components are not executed, determining that the operation state of the working machine is an idle state; otherwise, determining that the operation state of the working machine is a working state.
Specifically, when the execution states of the operation members of the work machine are not executed, that is, the work machine does not receive any operation instruction, the work machine is in an unmanned state, the state is determined to be an idle state, and otherwise, the work machine is in a working state. According to the embodiment of the invention, whether the operation parts are executing the corresponding operation instructions is judged according to the execution states of the operation parts, 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 rapidly and accurately detected.
Based on any of the foregoing embodiments, before the controlling the DC/DC converter to be turned off, the method further includes:
detecting a travel state of the work machine; wherein, the driving state includes a driving state and a parking state.
Specifically, the running state of the work machine, that is, whether the work machine is currently in a running state or a parking state is detected. In some cases, even if the execution state of each operating member of the working machine is detected as not being executed, the working machine may still be in a driving state, for example, a process of constant-speed running of the working machine, and therefore, by detecting the driving state before the DC/DC converter of the working machine is controlled to be turned off and started in a preset period, the influence on the running of the vehicle caused by the DC/DC converter of the working machine being turned off by mistake during the running can be effectively avoided. The detection method of the running state of the working machine is not particularly limited, and may be set according to actual conditions, for example, the gear of the working machine may be acquired by the VCU of the vehicle, or the wheel rotation speed of the vehicle may be acquired by the wheel speed sensor.
Based on any one of the above embodiments, when the on-off state is an on state and the operation state is a preset state within a first preset duration, controlling the DC/DC converter to be turned off includes:
and when the on-off state is an on state and the operation state is an idle state within a first preset duration, and the driving state is a parking state, the DC/DC converter is controlled to be closed.
Specifically, when the on-off state of the DC/DC converter is an on state and the operation state is an idle state, that is, when the running state is 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 foregoing embodiments, the first preset time period is longer than the second preset time period.
Specifically, the setting of the first preset duration determines whether frequent erroneous shutdown of the DC/DC converter occurs, and therefore, the setting time of the first duration may be relatively long, for example, 15 minutes; the on-off state of the DC/DC converter corresponding to the second preset time length is an off state, and 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 as the capacity of the low-voltage storage battery is smaller, the power consumption of the low-voltage storage battery can be effectively reduced by reducing the second preset time length, and the situation that the vehicle cannot be started due to the power shortage of the low-voltage storage battery is avoided; for example, the second preset duration may be 5 seconds. Therefore, the first preset time length is longer than the second preset time length, so that 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.
The following describes in detail a control method of a DC/DC converter of a working machine according to a preferred embodiment, 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 yes, executing step S403, otherwise, executing step S401;
s403, judging whether the vehicle is not operated, if yes, executing step S405, otherwise, executing step S404;
s404, resetting a timer, and repeating the step S403;
s405, timing by a timer, and repeating the step S403;
s406, judging whether the timing of the timer reaches a first preset duration, if so, executing a step S407, otherwise, executing a step S405; in the step, the first preset time period is set to 15 minutes;
s407, judging whether the vehicle is in a parking state, if yes, executing a step S408, otherwise, executing a step S407;
s408, sending a request for controlling the DC/DC converter to be closed, and timing by a timer after the DC/DC converter is closed;
s409, judging whether the timing of the timer reaches a second preset duration, if so, executing a step S410, otherwise, executing a step S409; in the step, the second preset time period is set to 5 seconds;
s410, controlling the DC/DC converter to start, and repeating the step S403.
The DC/DC converter control device for a working machine according to the present invention will be described below, and the DC/DC converter control device for a working machine described below and the DC/DC converter control method for a working machine described above may be referred to correspondingly. As shown in fig. 3, the apparatus includes:
a data acquisition module 310, 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 operation state is a preset state within a first preset duration;
and the second control module 330 is configured to control the DC/DC converter to start after a second preset period of time elapses after the DC/DC converter is turned off.
Based on the above embodiments, in the data acquisition module 310, detecting the operation state of the work machine includes:
and acquiring the execution state of each operation part of the working machine within a first preset time period, and determining the operation state of the working machine according to the execution state of each operation part.
Based on any of the above embodiments, in the data acquisition module 310, determining the operation state of the working machine according to the execution state of each operation component includes:
when the execution states of the operation components are not executed, determining that the operation state of the working machine is an idle state; otherwise, determining that the operation state of the working machine is a working state.
Based on any of the above embodiments, data acquisition module 310 may be further configured to detect a travel state of the work machine prior to controlling the DC/DC converter to shut down; wherein, the driving state includes a driving state and a parking state.
Based on any of the foregoing 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 duration, the controlling the DC/DC converter to be turned off includes:
and when the on-off state is an on state and the operation state is an idle state within a first preset duration, and the driving state is a parking state, the DC/DC converter is controlled to be closed.
Based on any of the foregoing embodiments, the first preset time period is longer than the second preset time period.
Based on any one of the above embodiments, the present invention further provides a working machine, including a DC/DC converter and a control device, where the control device is connected to the DC/DC converter and is configured to perform the steps of the control method of the DC/DC converter of the working machine according to any one of the above embodiments.
Fig. 4 illustrates a physical schematic diagram of an electronic device, as shown in fig. 4, which may include: processor 410, communication interface (Communications Interface) 420, memory 430 and communication bus 440, wherein processor 410, communication interface 420 and memory 430 communicate with each other via 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;
when the on-off state is an on state and the operation state is a preset state within a first preset time period, the DC/DC converter is controlled to be turned off;
and after the DC/DC converter is closed, controlling the DC/DC converter to start after a second preset time period.
Further, the logic instructions in the memory 430 described above may be implemented in the form of software functional units and may be stored in a computer-readable storage medium when sold or used as a stand-alone product. Based on this understanding, the technical solution of the present invention may be embodied essentially or in a part contributing to the prior art or in a part of the technical solution, in the form of a software product stored in a storage medium, comprising several instructions for causing a computer device (which may be a personal computer, a server, a network device, etc.) to perform 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, random Access Memory), a magnetic disk, or an optical disk, or 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 which, when executed by a computer, enable the computer to perform the 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;
when the on-off state is an on state and the operation state is a preset state within a first preset time period, the DC/DC converter is controlled to be turned off;
and after the DC/DC converter is closed, controlling the DC/DC converter to start 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 which, when executed by a processor, is implemented to perform the work machine DC/DC converter control methods provided above, 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;
when the on-off state is an on state and the operation state is a preset state within a first preset time period, the DC/DC converter is controlled to be turned off;
and after the DC/DC converter is closed, controlling the DC/DC converter to start after a second preset time period.
The apparatus embodiments described above are merely illustrative, wherein the elements illustrated as separate elements may or may not be physically separate, and the elements shown as elements may or may not be physical elements, may be located in one place, or may be distributed over a plurality of network elements. 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 (10)

1. A method for controlling a DC/DC converter of a work machine, 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;
when the on-off state is an on state and the operation state is a preset state within a first preset time period, the DC/DC converter is controlled to be turned off; the preset state is an idle state;
and after the DC/DC converter is closed, controlling the DC/DC converter to start after a second preset time period.
2. The work machine DC/DC converter control method according to claim 1, characterized in that the detecting the operation state of the work machine includes:
and acquiring the execution state of each operation part of the working machine within a first preset time period, and determining the operation state of the working machine according to the execution state of each operation part.
3. The method according to claim 2, wherein the determining the operation state of the working machine based on the execution states of the operation members includes:
when the execution states of the operation components are not executed, determining that the operation state of the working machine is an idle state; otherwise, determining that the operation state of the working machine is a working state.
4. A method of controlling a DC/DC converter of a work machine according to claim 3, characterized in that before said controlling the DC/DC converter to be turned off, further comprises:
detecting a travel state of the work machine; wherein, the driving state includes a driving state and a parking state.
5. The method according to claim 4, wherein when the on-off state is an on state and the operation state is a preset state within a first preset period of time, the step of controlling the DC/DC converter to be turned off includes:
and when the on-off state is an on state and the operation state is an idle state within a first preset duration, and the driving state is a parking state, the DC/DC converter is controlled to be closed.
6. The method according to claim 1, wherein the first preset time period is longer than the second preset time period.
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 when the on-off state is an on state and the operation state is a preset state within a first preset time period; the preset state is an idle state;
and the second control module is used for controlling the starting of the DC/DC converter after a second preset time period passes after the DC/DC converter is closed.
8. 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 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 implements the steps of the work machine DC/DC converter control method according to any one of claims 1 to 6 when the program is executed.
10. A non-transitory computer readable storage medium having stored thereon a computer program, characterized in that 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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