CN112647555A - Battery scraper emergency stop control system, control method and battery scraper - Google Patents
Battery scraper emergency stop control system, control method and battery scraper Download PDFInfo
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- CN112647555A CN112647555A CN202011606433.3A CN202011606433A CN112647555A CN 112647555 A CN112647555 A CN 112647555A CN 202011606433 A CN202011606433 A CN 202011606433A CN 112647555 A CN112647555 A CN 112647555A
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- emergency stop
- battery
- scraper
- display
- vehicle control
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Classifications
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- E—FIXED CONSTRUCTIONS
- E02—HYDRAULIC ENGINEERING; FOUNDATIONS; SOIL SHIFTING
- E02F—DREDGING; SOIL-SHIFTING
- E02F9/00—Component parts of dredgers or soil-shifting machines, not restricted to one of the kinds covered by groups E02F3/00 - E02F7/00
- E02F9/20—Drives; Control devices
- E02F9/2025—Particular purposes of control systems not otherwise provided for
- E02F9/2037—Coordinating the movements of the implement and of the frame
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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
- B60L3/04—Cutting off the power supply under fault conditions
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- E—FIXED CONSTRUCTIONS
- E02—HYDRAULIC ENGINEERING; FOUNDATIONS; SOIL SHIFTING
- E02F—DREDGING; SOIL-SHIFTING
- E02F9/00—Component parts of dredgers or soil-shifting machines, not restricted to one of the kinds covered by groups E02F3/00 - E02F7/00
- E02F9/20—Drives; Control devices
- E02F9/2058—Electric or electro-mechanical or mechanical control devices of vehicle sub-units
- E02F9/2062—Control of propulsion units
- E02F9/207—Control of propulsion units of the type electric propulsion units, e.g. electric motors or generators
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- E—FIXED CONSTRUCTIONS
- E02—HYDRAULIC ENGINEERING; FOUNDATIONS; SOIL SHIFTING
- E02F—DREDGING; SOIL-SHIFTING
- E02F9/00—Component parts of dredgers or soil-shifting machines, not restricted to one of the kinds covered by groups E02F3/00 - E02F7/00
- E02F9/20—Drives; Control devices
- E02F9/2058—Electric or electro-mechanical or mechanical control devices of vehicle sub-units
- E02F9/2091—Control of energy storage means for electrical energy, e.g. battery or capacitors
-
- E—FIXED CONSTRUCTIONS
- E02—HYDRAULIC ENGINEERING; FOUNDATIONS; SOIL SHIFTING
- E02F—DREDGING; SOIL-SHIFTING
- E02F9/00—Component parts of dredgers or soil-shifting machines, not restricted to one of the kinds covered by groups E02F3/00 - E02F7/00
- E02F9/20—Drives; Control devices
- E02F9/2058—Electric or electro-mechanical or mechanical control devices of vehicle sub-units
- E02F9/2095—Control of electric, electro-mechanical or mechanical equipment not otherwise provided for, e.g. ventilators, electro-driven fans
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- G—PHYSICS
- G08—SIGNALLING
- G08B—SIGNALLING OR CALLING SYSTEMS; ORDER TELEGRAPHS; ALARM SYSTEMS
- G08B21/00—Alarms responsive to a single specified undesired or abnormal condition and not otherwise provided for
- G08B21/18—Status alarms
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- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
- Y02T—CLIMATE CHANGE MITIGATION TECHNOLOGIES RELATED TO TRANSPORTATION
- Y02T10/00—Road transport of goods or passengers
- Y02T10/60—Other road transportation technologies with climate change mitigation effect
- Y02T10/72—Electric energy management in electromobility
Abstract
The invention discloses an emergency stop control system and method for a battery scraper and the battery scraper, and belongs to the technical field of scrapers. The control system comprises a whole vehicle controller, a display, a battery pack, an inverter, a traveling motor, a starting switch, at least one emergency stop switch, a safety relay and a storage battery; the automobile headlamp also comprises a front automobile lamp and a rear automobile lamp; a reset button is arranged on the display; the control method comprises two parts of starting and stopping control of a whole vehicle control system under the stop state of the battery scraper and emergency stopping control under the running state of the battery scraper; the battery scraper includes the control system of the present invention. The battery scraper has an emergency stop function, so that the battery scraper can stop emergently when meeting emergency, cut off the output of high-voltage direct current of the battery pack and ensure the safety of operators and the battery scraper.
Description
Technical Field
The invention belongs to the technical field of scrapers, and particularly relates to an emergency stop control system and method for a battery scraper and the battery scraper.
Background
Underground scrapers are widely used in mining operations, working in an underground mine environment, to load and carry ores. At present, scrapers have begun to shift from fuel powered scrapers to battery scrapers, and underground battery scrapers have begun to become the primary tools in mine operations. However, there are many problems with underground battery scraper technology. Underground battery scraper is at the mine operation in-process, because operational environment is abominable, often can take place some emergency, in order to protect operating personnel and scraper's safety, must set up some protect function to when emergency takes place, the operating personnel of being convenient for can in time operate scraper and carry out the protection action.
The battery scraper uses a direct-current high-voltage lithium battery pack as a power source, if the battery scraper encounters an emergency situation in the working process, the battery scraper needs to be stopped quickly and safely and cut off a direct-current output loop of the battery pack, so that no high-voltage current is output, and the safety of operators and equipment is ensured. However, in the prior art, a reliable system for controlling the emergency stop of the battery scraper and a reliable control method are lacking, and thus, it is difficult to ensure the safety of personnel and equipment during the operation of the battery scraper. For example, chinese patent application No. 201710800934.7 discloses a start-stop control system and control method for an excavator electronic fuel injection engine; chinese patent application No. 201310089326.1 discloses a starting and stopping control system for diesel engine of excavator; however, these techniques are difficult to apply to the scram control process of the battery scraper.
Disclosure of Invention
The technical problem is as follows: the invention provides a battery scraper emergency stop control system and a control method aiming at the problem that the safety is reduced because the effective emergency stop control is difficult to carry out in the working process of the current underground battery scraper, and further provides a battery scraper.
The technical scheme is as follows: the invention discloses an emergency stop control system of a battery scraper, which comprises a vehicle control unit, a display, a battery pack, an inverter, a walking motor, a starting switch, at least one emergency stop switch, a safety relay and a storage battery, wherein the vehicle control unit is connected with the display;
the display is connected with the vehicle control unit and used for receiving and displaying a display signal from the vehicle control unit and sending a control signal to the vehicle control unit when the display is operated;
the battery pack is connected with the walking motor through the inverter and used for supplying power to the walking motor; the battery pack is connected with the vehicle control unit and the display and used for supplying power to the vehicle control unit and the display; the vehicle control unit sends a switching-on/off signal to the main contactor to control whether the battery pack can supply power to the outside;
the starting switch is connected with the vehicle control unit and used for sending a starting and stopping signal to the vehicle control unit and controlling the starting and stopping of a vehicle control system of the battery scraper;
the emergency stop switch is connected with the safety controller and used for sending an emergency stop signal to the safety relay;
the safety relay is connected with the vehicle control unit and used for forwarding the emergency stop signal to the vehicle control unit;
the storage battery is connected with the vehicle control unit and the display and is used as a standby power supply when the battery pack is powered off;
and the vehicle control unit is connected with the inverter, sends a control command to the inverter and controls the running of the walking motor through the inverter.
Further, still include preceding car light and back car light, preceding car light and back car light all are connected with vehicle control unit, and vehicle control unit can send control signal to preceding car light and back car light, controls lighting and extinguishing of two car lights.
Further, the front vehicle lamp and the rear vehicle lamp are both low beam lamps.
Furthermore, the number of the emergency stop switches is three, and the three emergency stop switches are connected in series.
Furthermore, the emergency stop switch comprises two groups of normally closed contacts which are respectively connected with two groups of detection contacts of the safety relay.
Furthermore, a reset button is arranged on the display, and after the reset button is pressed down, a reset control signal can be sent to the whole vehicle controller through the display.
The emergency stop control method of the battery scraper of the invention comprises the following steps:
(1) start and stop control of vehicle control system under stopping state of battery scraper
a. When the whole vehicle control system is not started, a starting switch is closed, a starting signal is sent to the whole vehicle controller, the whole vehicle control system is normally started, if an emergency stop switch is pressed, an emergency stop signal is sent to a safety relay, the safety relay forwards the emergency stop signal to the whole vehicle controller after receiving the emergency stop signal, the whole vehicle controller sends an alarm signal to a display after receiving the emergency stop signal, the display sends an emergency stop activated alarm, the whole vehicle controller sends a disconnection control signal to a main contactor of a battery pack to disconnect the main contactor, and the battery scraper cannot be started; if the emergency stop switch is released, the display does not send out the activated emergency stop alarm, the main contactor is closed, and the scraper has the starting condition;
b. when the whole vehicle control system is in a running state, the starting switch is switched off, a stop signal is sent to the whole vehicle controller, and the emergency stop switch is pressed or released, so that the whole vehicle control system is shut down within a plurality of seconds and normally stops;
(2) emergency stop control in operating state of battery scraper
c. The whole vehicle control system normally operates, if the emergency stop switch is pressed, an emergency stop signal is sent to the safety relay, the safety relay forwards the emergency stop signal to the whole vehicle controller after receiving the emergency stop signal, and the whole vehicle controller executes the following steps after receiving the emergency stop signal:
sending a disconnection control signal to a main contactor of the battery pack to disconnect the main contactor;
sending a parking control instruction to an inverter, controlling the walking motor to stop by the inverter, and stopping the scraper;
sending an alarm signal to a display, and sending an alarm that the emergency stop is activated by the display;
sending a lamp turn-on signal to the front and rear lamps causes the lamps to turn on.
Further, after the scraper stops, the display continues to give an alarm, the emergency stop switch is released, the reset key on the display is pressed, and the alarm is turned off.
Further, both the front lamp and the rear lamp are low beam lamps.
The battery scraper comprises a front frame, a rear frame hinged with the front frame, a cab arranged on the front frame and the emergency stop control system, wherein three emergency stop switches are arranged, one emergency stop switch is arranged in the cab, and the other two emergency stop switches are arranged on the rear frame.
Has the advantages that: compared with the prior art, the invention has the following advantages:
(1) the emergency stop control system comprises a vehicle control unit, a display, a battery pack, an inverter, a traveling motor, a starting switch, at least one emergency stop switch, a safety relay and a storage battery; when an emergency occurs, the emergency stop switch is pressed, the whole vehicle control system works normally, the display sends alarm information, the whole vehicle controller sends a parking control instruction to the inverter, the inverter is used for controlling the traveling motor to stop running, and the whole vehicle controller sends an instruction to the battery pack to disconnect the main contactor and cut off the direct current power supply output of the battery pack. By utilizing the control system, the battery scraper can realize emergency stop control under emergency conditions, so that the safety of drivers and equipment is ensured.
(2) The emergency stop control system further comprises a front lamp and a rear lamp, so that emergency stop can be realized in a dim environment, illumination can be provided, and in a preferred embodiment, the front lamp and the rear lamp are both low beam lamps, so that illumination can be ensured occasionally, and energy can be saved.
(3) The emergency stop control system comprises three emergency stop switches which are connected in series, so that the emergency stop switches can be arranged at different positions of the scraper, and the emergency stop control at different positions is realized.
(4) Two sets of normally closed contacts of the emergency stop switch are respectively connected with two sets of detection contacts of the safety relay, so that the emergency stop switch can be reliably disconnected to control and prevent the contacts from being burnt, and the safety level of the whole scraper is improved.
(5) The reset button is arranged on the display of the system, a reset control signal can be sent to the whole vehicle controller through the display after the reset button is pressed, when the emergency stop switch is pressed, the emergency stop function is activated immediately, the emergency stop alarm is sent out on the display to prompt an operator to notice the vehicle state, the alarm prompt still exists after the emergency stop switch is reset, the operator is required to manually press the fault reset button on the display to eliminate the alarm after confirming that the emergency stop switch is reset, so that the operator can restart the vehicle after the fault is eliminated, and the safety performance is further improved.
(6) The emergency stop control method provided by the invention comprises two parts, namely start and stop control of a whole vehicle control system in a stop state of the battery scraper and emergency stop control in an operating state of the battery scraper, so that the battery scraper can be effectively subjected to emergency stop control, the high-voltage direct current output of a battery pack is cut off, and the safety of operators and the battery scraper is ensured.
(7) The battery scraper provided by the invention comprises the emergency stop control system provided by the invention, so that the battery scraper has an emergency stop function, can be stopped emergently when meeting emergency, and can cut off the output of high-voltage direct current of a battery pack, thereby ensuring the safety of operators and the battery scraper.
Drawings
Fig. 1 is an architecture diagram of an emergency stop control system of an embodiment of the present invention;
fig. 2 is a circuit diagram of three emergency stop switches according to an embodiment of the present invention.
Detailed Description
The invention is further described with reference to the following examples and the accompanying drawings.
The underground battery scraper comprises a front frame, a rear frame hinged with the front frame and a cab arranged on the front frame, and an operator sits in the cab and controls the battery scraper to operate through a whole vehicle control system. Firstly, the emergency stop control system of the invention is explained by combining with fig. 1, the system comprises a vehicle control unit, a display, a battery pack, an inverter, a walking motor, a starting switch, at least one emergency stop switch, a safety relay and a storage battery, in the preferred implementation of the invention, three emergency stop switches are arranged, one of the three emergency stop switches is arranged in a cab, and the other two emergency stop switches are arranged on a rear frame of the battery scraper, so that an operator can press the emergency stop switches at a plurality of positions to realize the emergency stop of the underground battery scraper, the safety of the underground battery scraper is greatly improved, and the safety of the operator and equipment is protected.
Further, in an embodiment of the present invention, the emergency stop control system further includes a front lamp and a rear lamp of the battery scraper, and preferably, both the front lamp and the rear lamp of the battery scraper are low beam lamps. Due to the poor lighting environment of the underground roadway, it is important to ensure that the lighting system is not greatly affected. When the emergency stop function is started in a normal driving state of the vehicle, the front and rear dipped headlights are controlled to be automatically turned on so as to conveniently carry out corresponding inspection on the whole vehicle, and in the preferred embodiment, the reason that the dipped headlights are not turned on is selected to reduce the working time of the electric equipment which continues the storage battery to the greatest extent under the condition that the battery pack does not have high-voltage output.
In the following, a detailed description is given of the connection relationship and the function of each component in the emergency stop control system, wherein the display is electrically connected to the vehicle controller, and is used for receiving and displaying a signal, such as an alarm message, sent from the vehicle controller, and sending a control signal to the vehicle controller when the display is operated. An operator can monitor the running state of the control system in real time through the display, and can operate the display to send a control instruction to the vehicle control unit so as to complete certain set control functions.
The battery pack is connected with the walking motor through the inverter and used for supplying power to the walking motor; the inverter can convert high-voltage direct current output by the battery pack into alternating current, so that the running motor can be driven to run. And the inverter is connected with the vehicle control unit, and the vehicle control unit can send a control command to the inverter, so that the running of the walking motor is controlled through the inverter.
The battery pack is connected with the vehicle control unit and the display and used for supplying power to the vehicle control unit and the display, so that the vehicle control unit and the display can work.
The vehicle control unit sends a switching-on/off signal to the main contactor to control whether the battery pack can supply power to the outside; when the main contactor is disconnected, the battery pack can not supply power to the outside any more.
The starting switch is connected with the whole vehicle controller and used for sending a starting or stopping signal to the whole vehicle controller; and under the condition that the whole system has no fault, when the starting switch is closed, a starting signal is sent to the whole vehicle controller to start the control system, and when the starting switch is disconnected, a stopping signal is sent to the whole vehicle controller to shut down the control system.
The emergency stop switch is connected with the safety controller, the safety relay is connected with the vehicle control unit, when an emergency occurs, the emergency stop switch is pressed down, the emergency stop signal is sent to the safety relay, then the safety relay forwards the emergency stop signal to the vehicle control unit, and the vehicle control unit receives the emergency stop signal and then carries out emergency stop control.
In the embodiment of the invention with three emergency stop switches, the three emergency stop switches are connected in series, the emergency stop switches comprise two groups of normally closed contacts, and in order to ensure that the emergency stop switches can be reliably disconnected and controlled to prevent the contacts from being burnt, the two groups of normally closed contacts of the emergency stop switches are connected with different groups of detection contacts of the safety relay, so that the safety level of the underground battery scraper is further improved. As shown in FIG. 2, the emergency stop switches S1, S2 and S3 are connected in series, and then two sets of normally closed contacts are connected to two sets of detection contacts T1-R1 and T2-R2 of the safety relay J1, respectively.
The storage battery is connected with the vehicle control unit and the display and used as a standby power supply when the battery pack is powered off. After the battery pack is powered off, the storage battery is needed to supply power for maintaining the work of the whole vehicle control system.
The front car light and the rear car light are connected with the whole car controller, and the whole car controller can send control signals to the front car light and the rear car light to control the two car lights to be turned on and turned off.
Further, in an embodiment of the present invention, a reset button is disposed on the display, and is used for sending a reset control signal to the vehicle control unit through the display by pressing the reset button after the emergency stop switch is pressed. When the battery scraper is scrammed, and after the fault is eliminated, the reset button is pressed, and the scram alarm can be eliminated.
In addition, in the embodiment of the invention, the storage battery is a lead-acid storage battery, and can provide 24VDC power, so that the normal operation of the control system and the lighting can be maintained for a short time when the main contactor of the battery pack is disconnected and no power output exists.
On the basis of the emergency stop control system provided by the invention, an emergency stop control method is provided, and the method comprises two parts:
a first part: whole car control system starts and stops control under battery scraper stopped state, and whole car control system can control battery scraper whole car, and this part includes:
a. when the whole vehicle control system is not started, a starting switch is closed, a starting signal is sent to the whole vehicle controller, the whole vehicle control system is normally started, if an emergency stop switch is pressed, an emergency stop signal is sent to a safety relay, the safety relay forwards the emergency stop signal to the whole vehicle controller after receiving the emergency stop signal, the whole vehicle controller sends an alarm signal to a display after receiving the emergency stop signal, the display sends an emergency stop activated alarm, the whole vehicle controller sends a disconnection control signal to a main contactor of a battery pack to disconnect the main contactor, and the battery scraper cannot be started; if the emergency stop switch is released, the display does not send out the activated emergency stop alarm, the main contactor is closed, and the scraper has the starting condition.
For the sake of more convenience of explanation, the above control process is broken down into two input-output action processes:
(1) when the emergency stop switch is pressed and activated, the whole vehicle control system is started
Inputting: emergency stop switch in pressed position
-the starting switch is in the closed state
And (3) outputting: normal start of the vehicle control system
-issuing an emergency stop activated warning on the display
Main contactor of battery pack open, battery scraper not being started
(2) When the emergency stop switch is not pressed and activated, the whole vehicle control system is started
Inputting: emergency stop switch in released state
-the starting switch is in the closed state
As a result: normal start of the vehicle control system
Absence of scram alarm fault indication on the display
Main contactor pull-in of battery pack, battery scraper having start-up conditions
b. When the whole vehicle control system is in a running state, the starting switch is switched off, a stop signal is sent to the whole vehicle controller, and the emergency stop switch is pressed or released, so that the whole vehicle control system is shut down within a plurality of seconds and normally stops;
also, the above method is broken down into two input-output action processes:
(1) when the emergency stop switch is pressed and activated, the whole vehicle control system is stopped
Inputting: normal operation of the vehicle control system
The emergency stop switch being in a depressed state
-the starting switch is in the off state
As a result: the whole vehicle control system finishes shutdown after 5 seconds, and the whole vehicle control system normally stops
(2) When the emergency stop switch is not pressed and activated, the whole vehicle control system is stopped
Inputting: normal operation of the vehicle control system
Emergency stop switch in released state
-the starting switch is in the off state
As a result: the whole vehicle control system finishes shutdown after 5 seconds, and the whole vehicle control system normally stops
A second part: emergency stop control in operating state of battery scraper
c. The whole vehicle control system normally operates, if the emergency stop switch is pressed, an emergency stop signal is sent to the safety relay, the safety relay forwards the emergency stop signal to the whole vehicle controller after receiving the emergency stop signal, and the whole vehicle controller executes the following steps after receiving the emergency stop signal:
sending a disconnection control signal to the main contactor to disconnect the main contactor;
sending a control parking command to the inverter, controlling the walking motor to stop by the inverter, and stopping the scraper;
sending an alarm signal to a display, and sending an alarm that the emergency stop is activated by the display;
and sending starting signals to the front and rear lamps to enable the lamps to be started.
The action input-output process is as follows:
inputting: normal operation of the vehicle control system
Main contactor pull-in of battery pack
Emergency stop switch pressed state
As a result: main contactor of the battery pack is opened
-the inverter U1 issues a parking command
-issuing an emergency stop activated warning on the display
Front and rear light activation of the scraper
Scraper stopping
In the preferred embodiment of the invention, the front dipped headlight and the rear dipped headlight are turned on, so that the illumination is ensured and the electric energy can be saved.
Further, to further improve safety performance, after the battery scraper is stopped, the display continues to display alarm information, and only when the emergency stop switch is released and the reset key on the display is pressed, can the display turn off the alarm. Specifically, further illustrated in the input-output form of an action, it can be decomposed into two input-output action representations:
(1) firstly, the emergency stop switch is released, and then the reset button is pressed
Inputting: normal operation of the vehicle control system
-the scram switch is pressed
-releasing the emergency stop switch to reset the emergency stop switch
-pressing the reset button
As a result: absence of emergency stop warning on display
Main contactor of the battery pack is opened
Scraper vehicle stopping
(2) The reset button is pressed first, and then the emergency stop switch is released
Inputting: normal operation of the vehicle control system
-pressing the reset button
-the scram switch is pressed
-releasing the emergency stop switch to reset the emergency stop switch
As a result: absence of emergency stop warning on display
Main contactor of the battery pack is opened
Scraper stopping
The operator can cancel the alarm by the function of the reset button after confirming that the battery scraper has safely stopped, thereby further improving the safety. By using the emergency stop control method provided by the invention, the effective emergency stop control of the battery scraper can be realized when an emergency situation occurs, so that the safety of operators and equipment is protected.
The invention further provides a battery scraper, which comprises a front frame, a rear frame hinged with the front frame, a cab arranged on the front frame and the proposed emergency stop control system, wherein the number of emergency stop switches is three, one of the emergency stop switches is arranged in the cab, and the other two emergency stop switches are arranged on the rear frame. The battery scraper has the function of emergency stop, so that the scraper can be stopped emergently in case of emergency, and the high-voltage power supply of the battery pack is cut off, thereby effectively protecting the safety of operators and equipment.
The above examples are only preferred embodiments of the present invention, it should be noted that: it will be apparent to those skilled in the art that various modifications and equivalents can be made without departing from the spirit of the invention, and it is intended that all such modifications and equivalents fall within the scope of the invention as defined in the claims.
Claims (10)
1. A battery scraper emergency stop control system is characterized by comprising a vehicle control unit, a display, a battery pack, an inverter, a walking motor, a start switch, a switch, at least one emergency stop switch, a safety relay and a storage battery;
the display is connected with the vehicle control unit and used for receiving and displaying a display signal from the vehicle control unit and sending a control signal to the vehicle control unit when the display is operated;
the battery pack is connected with the walking motor through the inverter and used for supplying power to the walking motor; the battery pack is connected with the vehicle control unit and the display and used for supplying power to the vehicle control unit and the display; the vehicle control unit sends a switching-on/off signal to the main contactor to control whether the battery pack can supply power to the outside;
the starting switch is connected with the vehicle control unit and used for sending a starting and stopping signal to the vehicle control unit and controlling the starting and stopping of a vehicle control system of the battery scraper;
the emergency stop switch is connected with the safety controller and used for sending an emergency stop signal to the safety relay;
the safety relay is connected with the vehicle control unit and used for forwarding the emergency stop signal to the vehicle control unit;
the storage battery is connected with the vehicle control unit and the display and is used as a standby power supply when the battery pack is powered off;
and the vehicle control unit is connected with the inverter, sends a control command to the inverter and controls the running of the walking motor through the inverter.
2. The battery scraper emergency stop control system of claim 1, further comprising a front light and a rear light, wherein the front light and the rear light are both connected to the vehicle control unit, and the vehicle control unit is capable of sending control signals to the front light and the rear light to control the turning on and off of the two lights.
3. The battery scraper emergency stop control system of claim 2, wherein the front and rear lights are low beam lights.
4. The battery scraper emergency stop control system of claim 1, wherein there are three emergency stop switches, and three emergency stop switches are connected in series.
5. The battery scraper emergency stop control system of claim 4, wherein the emergency stop switch comprises two sets of normally closed contacts, the two sets of normally closed contacts being connected to two sets of sensing contacts of the safety relay, respectively.
6. The battery scraper emergency stop control system of any one of claims 1-5, wherein a reset button is provided on the display, and when pressed, a reset control signal can be sent to the vehicle control unit via the display.
7. A battery scraper emergency stop control method, comprising:
(1) start and stop control of vehicle control system under stopping state of battery scraper
a. When the whole vehicle control system is not started, a starting switch is closed, a starting signal is sent to the whole vehicle controller, the whole vehicle control system is normally started, if an emergency stop switch is pressed, an emergency stop signal is sent to a safety relay, the safety relay forwards the emergency stop signal to the whole vehicle controller after receiving the emergency stop signal, the whole vehicle controller sends an alarm signal to a display after receiving the emergency stop signal, the display sends an emergency stop activated alarm, the whole vehicle controller sends a disconnection control signal to a main contactor of a battery pack to disconnect the main contactor, and the battery scraper cannot be started; if the emergency stop switch is released, the display does not send out the activated emergency stop alarm, the main contactor is closed, and the scraper has the starting condition;
b. when the whole vehicle control system is in a running state, the starting switch is switched off, a stop signal is sent to the whole vehicle controller, and the emergency stop switch is pressed or released, so that the whole vehicle control system is shut down within a plurality of seconds and normally stops;
(2) emergency stop control in operating state of battery scraper
c. The whole vehicle control system normally operates, if the emergency stop switch is pressed, an emergency stop signal is sent to the safety relay, the safety relay forwards the emergency stop signal to the whole vehicle controller after receiving the emergency stop signal, and the whole vehicle controller executes the following steps after receiving the emergency stop signal:
sending a disconnection control signal to a main contactor of the battery pack to disconnect the main contactor;
sending a parking control instruction to an inverter, controlling the walking motor to stop by the inverter, and stopping the scraper;
sending an alarm signal to a display, and sending an alarm that the emergency stop is activated by the display;
sending a lamp turn-on signal to the front and rear lamps causes the lamps to turn on.
8. The battery scraper emergency stop control method of claim 7, wherein after the scraper is stopped, the display continues to alarm, the emergency stop switch is released, and a reset key on the display is pressed, and the alarm is turned off.
9. The battery scraper emergency stop control method according to any one of claims 7 to 8, wherein the front lamp and the rear lamp are both low beam lamps.
10. A battery scraper comprising a front frame, a rear frame hinged to the front frame, a cab disposed on the front frame, and the emergency stop control system of any of claims 1-6, wherein there are three emergency stop switches, one of which is disposed in the cab and the other two of which are disposed on the rear frame.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202011606433.3A CN112647555A (en) | 2020-12-30 | 2020-12-30 | Battery scraper emergency stop control system, control method and battery scraper |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
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